X-Git-Url: https://git.distorted.org.uk/~mdw/tig/blobdiff_plain/9a66631561319b86f54f20346d953070238cc346..c630ef12f388ecb40834d9b4456ce80fc499dedf:/tig.c diff --git a/tig.c b/tig.c index 055ad11..71ddbb5 100644 --- a/tig.c +++ b/tig.c @@ -1,4 +1,4 @@ -/* Copyright (c) 2006 Jonas Fonseca +/* Copyright (c) 2006-2007 Jonas Fonseca * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as @@ -10,39 +10,13 @@ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. */ -/** - * TIG(1) - * ====== - * - * NAME - * ---- - * tig - text-mode interface for git - * - * SYNOPSIS - * -------- - * [verse] - * tig [options] - * tig [options] [--] [git log options] - * tig [options] log [git log options] - * tig [options] diff [git diff options] - * tig [options] show [git show options] - * tig [options] < [git command output] - * - * DESCRIPTION - * ----------- - * Browse changes in a git repository. Additionally, tig(1) can also act - * as a pager for output of various git commands. - * - * When browsing repositories, tig(1) uses the underlying git commands - * to present the user with various views, such as summarized commit log - * and showing the commit with the log message, diffstat, and the diff. - * - * Using tig(1) as a pager, it will display input from stdin and try - * to colorize it. - **/ -#ifndef VERSION -#define VERSION "tig-0.3" +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#ifndef TIG_VERSION +#define TIG_VERSION "unknown-version" #endif #ifndef DEBUG @@ -57,14 +31,29 @@ #include #include #include +#include +#include #include #include +#include + +#include +#include +#include + #include -static void die(const char *err, ...); +#if __GNUC__ >= 3 +#define __NORETURN __attribute__((__noreturn__)) +#else +#define __NORETURN +#endif + +static void __NORETURN die(const char *err, ...); +static void warn(const char *msg, ...); static void report(const char *msg, ...); -static int read_properties(const char *cmd, int separator, int (*read)(char *, int, char *, int)); +static int read_properties(FILE *pipe, const char *separators, int (*read)(char *, size_t, char *, size_t)); static void set_nonblocking_input(bool loading); static size_t utf8_length(const char *string, size_t max_width, int *coloffset, int *trimmed); @@ -74,13 +63,28 @@ static size_t utf8_length(const char *string, size_t max_width, int *coloffset, #define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0])) #define STRING_SIZE(x) (sizeof(x) - 1) +#define SIZEOF_STR 1024 /* Default string size. */ #define SIZEOF_REF 256 /* Size of symbolic or SHA1 ID. */ -#define SIZEOF_CMD 1024 /* Size of command buffer. */ +#define SIZEOF_REV 41 /* Holds a SHA-1 and an ending NUL */ + +/* Revision graph */ + +#define REVGRAPH_INIT 'I' +#define REVGRAPH_MERGE 'M' +#define REVGRAPH_BRANCH '+' +#define REVGRAPH_COMMIT '*' +#define REVGRAPH_BOUND '^' +#define REVGRAPH_LINE '|' + +#define SIZEOF_REVGRAPH 19 /* Size of revision ancestry graphics. */ /* This color name can be used to refer to the default term colors. */ #define COLOR_DEFAULT (-1) -#define TIG_HELP "(d)iff, (l)og, (m)ain, (q)uit, (h)elp" +#define ICONV_NONE ((iconv_t) -1) +#ifndef ICONV_CONST +#define ICONV_CONST /* nothing */ +#endif /* The format and size of the date column in the main view. */ #define DATE_FORMAT "%Y-%m-%d %H:%M" @@ -95,77 +99,160 @@ static size_t utf8_length(const char *string, size_t max_width, int *coloffset, #define SCALE_SPLIT_VIEW(height) ((height) * 2 / 3) +#ifndef GIT_CONFIG +#define GIT_CONFIG "git config" +#endif + +#define TIG_LS_REMOTE \ + "git ls-remote $(git rev-parse --git-dir) 2>/dev/null" + +#define TIG_DIFF_CMD \ + "git show --no-color --root --patch-with-stat --find-copies-harder -C %s 2>/dev/null" + +#define TIG_LOG_CMD \ + "git log --no-color --cc --stat -n100 %s 2>/dev/null" + +#define TIG_MAIN_CMD \ + "git log --no-color --topo-order --boundary --pretty=raw %s 2>/dev/null" + +#define TIG_TREE_CMD \ + "git ls-tree %s %s" + +#define TIG_BLOB_CMD \ + "git cat-file blob %s" + +/* XXX: Needs to be defined to the empty string. */ +#define TIG_HELP_CMD "" +#define TIG_PAGER_CMD "" +#define TIG_STATUS_CMD "" +#define TIG_STAGE_CMD "" + /* Some ascii-shorthands fitted into the ncurses namespace. */ #define KEY_TAB '\t' #define KEY_RETURN '\r' #define KEY_ESC 27 -/* User action requests. */ -enum request { - /* Offset all requests to avoid conflicts with ncurses getch values. */ - REQ_OFFSET = KEY_MAX + 1, - - /* XXX: Keep the view request first and in sync with views[]. */ - REQ_VIEW_MAIN, - REQ_VIEW_DIFF, - REQ_VIEW_LOG, - REQ_VIEW_HELP, - REQ_VIEW_PAGER, - - REQ_ENTER, - REQ_QUIT, - REQ_PROMPT, - REQ_SCREEN_REDRAW, - REQ_SCREEN_RESIZE, - REQ_SCREEN_UPDATE, - REQ_SHOW_VERSION, - REQ_STOP_LOADING, - REQ_TOGGLE_LINE_NUMBERS, - REQ_VIEW_NEXT, - REQ_VIEW_CLOSE, - REQ_NEXT, - REQ_PREVIOUS, - - REQ_MOVE_UP, - REQ_MOVE_DOWN, - REQ_MOVE_PAGE_UP, - REQ_MOVE_PAGE_DOWN, - REQ_MOVE_FIRST_LINE, - REQ_MOVE_LAST_LINE, - - REQ_SCROLL_LINE_UP, - REQ_SCROLL_LINE_DOWN, - REQ_SCROLL_PAGE_UP, - REQ_SCROLL_PAGE_DOWN, -}; - struct ref { char *name; /* Ref name; tag or head names are shortened. */ - char id[41]; /* Commit SHA1 ID */ + char id[SIZEOF_REV]; /* Commit SHA1 ID */ unsigned int tag:1; /* Is it a tag? */ + unsigned int remote:1; /* Is it a remote ref? */ unsigned int next:1; /* For ref lists: are there more refs? */ }; static struct ref **get_refs(char *id); +struct int_map { + const char *name; + int namelen; + int value; +}; + +static int +set_from_int_map(struct int_map *map, size_t map_size, + int *value, const char *name, int namelen) +{ + + int i; + + for (i = 0; i < map_size; i++) + if (namelen == map[i].namelen && + !strncasecmp(name, map[i].name, namelen)) { + *value = map[i].value; + return OK; + } + + return ERR; +} + /* * String helpers */ static inline void -string_ncopy(char *dst, const char *src, int dstlen) +string_ncopy_do(char *dst, size_t dstlen, const char *src, size_t srclen) { - strncpy(dst, src, dstlen - 1); - dst[dstlen - 1] = 0; + if (srclen > dstlen - 1) + srclen = dstlen - 1; + strncpy(dst, src, srclen); + dst[srclen] = 0; } -/* Shorthand for safely copying into a fixed buffer. */ +/* Shorthands for safely copying into a fixed buffer. */ + #define string_copy(dst, src) \ - string_ncopy(dst, src, sizeof(dst)) + string_ncopy_do(dst, sizeof(dst), src, sizeof(src)) + +#define string_ncopy(dst, src, srclen) \ + string_ncopy_do(dst, sizeof(dst), src, srclen) + +#define string_copy_rev(dst, src) \ + string_ncopy_do(dst, SIZEOF_REV, src, SIZEOF_REV - 1) + +#define string_add(dst, from, src) \ + string_ncopy_do(dst + (from), sizeof(dst) - (from), src, sizeof(src)) + +static char * +chomp_string(char *name) +{ + int namelen; + + while (isspace(*name)) + name++; + + namelen = strlen(name) - 1; + while (namelen > 0 && isspace(name[namelen])) + name[namelen--] = 0; + + return name; +} + +static bool +string_nformat(char *buf, size_t bufsize, size_t *bufpos, const char *fmt, ...) +{ + va_list args; + size_t pos = bufpos ? *bufpos : 0; + + va_start(args, fmt); + pos += vsnprintf(buf + pos, bufsize - pos, fmt, args); + va_end(args); + + if (bufpos) + *bufpos = pos; + + return pos >= bufsize ? FALSE : TRUE; +} + +#define string_format(buf, fmt, args...) \ + string_nformat(buf, sizeof(buf), NULL, fmt, args) + +#define string_format_from(buf, from, fmt, args...) \ + string_nformat(buf, sizeof(buf), from, fmt, args) + +static int +string_enum_compare(const char *str1, const char *str2, int len) +{ + size_t i; + +#define string_enum_sep(x) ((x) == '-' || (x) == '_' || (x) == '.') + + /* Diff-Header == DIFF_HEADER */ + for (i = 0; i < len; i++) { + if (toupper(str1[i]) == toupper(str2[i])) + continue; + + if (string_enum_sep(str1[i]) && + string_enum_sep(str2[i])) + continue; + + return str1[i] - str2[i]; + } + return 0; +} /* Shell quoting * @@ -185,11 +272,11 @@ string_ncopy(char *dst, const char *src, int dstlen) */ static size_t -sq_quote(char buf[SIZEOF_CMD], size_t bufsize, const char *src) +sq_quote(char buf[SIZEOF_STR], size_t bufsize, const char *src) { char c; -#define BUFPUT(x) do { if (bufsize < SIZEOF_CMD) buf[bufsize++] = (x); } while (0) +#define BUFPUT(x) do { if (bufsize < SIZEOF_STR) buf[bufsize++] = (x); } while (0) BUFPUT('\''); while ((c = *src++)) { @@ -204,228 +291,299 @@ sq_quote(char buf[SIZEOF_CMD], size_t bufsize, const char *src) } BUFPUT('\''); + if (bufsize < SIZEOF_STR) + buf[bufsize] = 0; + return bufsize; } -/** - * OPTIONS - * ------- - **/ +/* + * User requests + */ + +#define REQ_INFO \ + /* XXX: Keep the view request first and in sync with views[]. */ \ + REQ_GROUP("View switching") \ + REQ_(VIEW_MAIN, "Show main view"), \ + REQ_(VIEW_DIFF, "Show diff view"), \ + REQ_(VIEW_LOG, "Show log view"), \ + REQ_(VIEW_TREE, "Show tree view"), \ + REQ_(VIEW_BLOB, "Show blob view"), \ + REQ_(VIEW_HELP, "Show help page"), \ + REQ_(VIEW_PAGER, "Show pager view"), \ + REQ_(VIEW_STATUS, "Show status view"), \ + REQ_(VIEW_STAGE, "Show stage view"), \ + \ + REQ_GROUP("View manipulation") \ + REQ_(ENTER, "Enter current line and scroll"), \ + REQ_(NEXT, "Move to next"), \ + REQ_(PREVIOUS, "Move to previous"), \ + REQ_(VIEW_NEXT, "Move focus to next view"), \ + REQ_(REFRESH, "Reload and refresh"), \ + REQ_(VIEW_CLOSE, "Close the current view"), \ + REQ_(QUIT, "Close all views and quit"), \ + \ + REQ_GROUP("Cursor navigation") \ + REQ_(MOVE_UP, "Move cursor one line up"), \ + REQ_(MOVE_DOWN, "Move cursor one line down"), \ + REQ_(MOVE_PAGE_DOWN, "Move cursor one page down"), \ + REQ_(MOVE_PAGE_UP, "Move cursor one page up"), \ + REQ_(MOVE_FIRST_LINE, "Move cursor to first line"), \ + REQ_(MOVE_LAST_LINE, "Move cursor to last line"), \ + \ + REQ_GROUP("Scrolling") \ + REQ_(SCROLL_LINE_UP, "Scroll one line up"), \ + REQ_(SCROLL_LINE_DOWN, "Scroll one line down"), \ + REQ_(SCROLL_PAGE_UP, "Scroll one page up"), \ + REQ_(SCROLL_PAGE_DOWN, "Scroll one page down"), \ + \ + REQ_GROUP("Searching") \ + REQ_(SEARCH, "Search the view"), \ + REQ_(SEARCH_BACK, "Search backwards in the view"), \ + REQ_(FIND_NEXT, "Find next search match"), \ + REQ_(FIND_PREV, "Find previous search match"), \ + \ + REQ_GROUP("Misc") \ + REQ_(PROMPT, "Bring up the prompt"), \ + REQ_(SCREEN_REDRAW, "Redraw the screen"), \ + REQ_(SCREEN_RESIZE, "Resize the screen"), \ + REQ_(SHOW_VERSION, "Show version information"), \ + REQ_(STOP_LOADING, "Stop all loading views"), \ + REQ_(TOGGLE_LINENO, "Toggle line numbers"), \ + REQ_(TOGGLE_REV_GRAPH, "Toggle revision graph visualization"), \ + REQ_(STATUS_UPDATE, "Update file status"), \ + REQ_(STATUS_MERGE, "Merge file using external tool"), \ + REQ_(TREE_PARENT, "Switch to parent directory in tree view"), \ + REQ_(EDIT, "Open in editor"), \ + REQ_(NONE, "Do nothing") + + +/* User action requests. */ +enum request { +#define REQ_GROUP(help) +#define REQ_(req, help) REQ_##req + + /* Offset all requests to avoid conflicts with ncurses getch values. */ + REQ_OFFSET = KEY_MAX + 1, + REQ_INFO + +#undef REQ_GROUP +#undef REQ_ +}; + +struct request_info { + enum request request; + char *name; + int namelen; + char *help; +}; + +static struct request_info req_info[] = { +#define REQ_GROUP(help) { 0, NULL, 0, (help) }, +#define REQ_(req, help) { REQ_##req, (#req), STRING_SIZE(#req), (help) } + REQ_INFO +#undef REQ_GROUP +#undef REQ_ +}; + +static enum request +get_request(const char *name) +{ + int namelen = strlen(name); + int i; + + for (i = 0; i < ARRAY_SIZE(req_info); i++) + if (req_info[i].namelen == namelen && + !string_enum_compare(req_info[i].name, name, namelen)) + return req_info[i].request; + + return REQ_NONE; +} + + +/* + * Options + */ static const char usage[] = -VERSION " (" __DATE__ ")\n" +"tig " TIG_VERSION " (" __DATE__ ")\n" "\n" -"Usage: tig [options]\n" -" or: tig [options] [--] [git log options]\n" -" or: tig [options] log [git log options]\n" -" or: tig [options] diff [git diff options]\n" -" or: tig [options] show [git show options]\n" -" or: tig [options] < [git command output]\n" +"Usage: tig [options] [revs] [--] [paths]\n" +" or: tig show [options] [revs] [--] [paths]\n" +" or: tig status\n" +" or: tig < [git command output]\n" "\n" "Options:\n" -" -l Start up in log view\n" -" -d Start up in diff view\n" -" -n[I], --line-number[=I] Show line numbers with given interval\n" -" -t[N], --tab-size[=N] Set number of spaces for tab expansion\n" -" -- Mark end of tig options\n" -" -v, --version Show version and exit\n" -" -h, --help Show help message and exit\n"; +" -v, --version Show version and exit\n" +" -h, --help Show help message and exit\n"; /* Option and state variables. */ -static bool opt_line_number = FALSE; -static int opt_num_interval = NUMBER_INTERVAL; -static int opt_tab_size = TABSIZE; -static enum request opt_request = REQ_VIEW_MAIN; -static char opt_cmd[SIZEOF_CMD] = ""; -static char opt_encoding[20] = ""; -static bool opt_utf8 = TRUE; -static FILE *opt_pipe = NULL; +static bool opt_line_number = FALSE; +static bool opt_rev_graph = FALSE; +static int opt_num_interval = NUMBER_INTERVAL; +static int opt_tab_size = TABSIZE; +static enum request opt_request = REQ_VIEW_MAIN; +static char opt_cmd[SIZEOF_STR] = ""; +static char opt_path[SIZEOF_STR] = ""; +static FILE *opt_pipe = NULL; +static char opt_encoding[20] = "UTF-8"; +static bool opt_utf8 = TRUE; +static char opt_codeset[20] = "UTF-8"; +static iconv_t opt_iconv = ICONV_NONE; +static char opt_search[SIZEOF_STR] = ""; +static char opt_cdup[SIZEOF_STR] = ""; +static char opt_git_dir[SIZEOF_STR] = ""; +static char opt_is_inside_work_tree = -1; /* set to TRUE or FALSE */ +static char opt_editor[SIZEOF_STR] = ""; + +enum option_type { + OPT_NONE, + OPT_INT, +}; + +static bool +check_option(char *opt, char short_name, char *name, enum option_type type, ...) +{ + va_list args; + char *value = ""; + int *number; + + if (opt[0] != '-') + return FALSE; + + if (opt[1] == '-') { + int namelen = strlen(name); + + opt += 2; + + if (strncmp(opt, name, namelen)) + return FALSE; + + if (opt[namelen] == '=') + value = opt + namelen + 1; + + } else { + if (!short_name || opt[1] != short_name) + return FALSE; + value = opt + 2; + } + + va_start(args, type); + if (type == OPT_INT) { + number = va_arg(args, int *); + if (isdigit(*value)) + *number = atoi(value); + } + va_end(args); + + return TRUE; +} /* Returns the index of log or diff command or -1 to exit. */ static bool parse_options(int argc, char *argv[]) { + char *altargv[1024]; + int altargc = 0; + char *subcommand = NULL; int i; for (i = 1; i < argc; i++) { char *opt = argv[i]; - /** - * -l:: - * Start up in log view using the internal log command. - **/ - if (!strcmp(opt, "-l")) { - opt_request = REQ_VIEW_LOG; - continue; + if (!strcmp(opt, "log") || + !strcmp(opt, "diff")) { + subcommand = opt; + opt_request = opt[0] == 'l' + ? REQ_VIEW_LOG : REQ_VIEW_DIFF; + warn("`tig %s' has been deprecated", opt); + break; } - /** - * -d:: - * Start up in diff view using the internal diff command. - **/ - if (!strcmp(opt, "-d")) { + if (!strcmp(opt, "show")) { + subcommand = opt; opt_request = REQ_VIEW_DIFF; - continue; + break; } - /** - * -n[INTERVAL], --line-number[=INTERVAL]:: - * Prefix line numbers in log and diff view. - * Optionally, with interval different than each line. - **/ - if (!strncmp(opt, "-n", 2) || - !strncmp(opt, "--line-number", 13)) { - char *num = opt; - - if (opt[1] == 'n') { - num = opt + 2; - - } else if (opt[STRING_SIZE("--line-number")] == '=') { - num = opt + STRING_SIZE("--line-number="); - } - - if (isdigit(*num)) - opt_num_interval = atoi(num); - - opt_line_number = TRUE; - continue; + if (!strcmp(opt, "status")) { + subcommand = opt; + opt_request = REQ_VIEW_STATUS; + break; } - /** - * -b[NSPACES], --tab-size[=NSPACES]:: - * Set the number of spaces tabs should be expanded to. - **/ - if (!strncmp(opt, "-b", 2) || - !strncmp(opt, "--tab-size", 10)) { - char *num = opt; - - if (opt[1] == 'b') { - num = opt + 2; - - } else if (opt[STRING_SIZE("--tab-size")] == '=') { - num = opt + STRING_SIZE("--tab-size="); - } + if (opt[0] && opt[0] != '-') + break; - if (isdigit(*num)) - opt_tab_size = MIN(atoi(num), TABSIZE); - continue; + if (!strcmp(opt, "--")) { + i++; + break; } - /** - * -v, --version:: - * Show version and exit. - **/ - if (!strcmp(opt, "-v") || - !strcmp(opt, "--version")) { - printf("tig version %s\n", VERSION); + if (check_option(opt, 'v', "version", OPT_NONE)) { + printf("tig version %s\n", TIG_VERSION); return FALSE; } - /** - * -h, --help:: - * Show help message and exit. - **/ - if (!strcmp(opt, "-h") || - !strcmp(opt, "--help")) { + if (check_option(opt, 'h', "help", OPT_NONE)) { printf(usage); return FALSE; } - /** - * \--:: - * End of tig(1) options. Useful when specifying command - * options for the main view. Example: - * - * $ tig -- --since=1.month - **/ - if (!strcmp(opt, "--")) { - i++; - break; + if (!strcmp(opt, "-S")) { + warn("`%s' has been deprecated; use `tig status' instead", opt); + opt_request = REQ_VIEW_STATUS; + continue; } - /** - * log [git log options]:: - * Open log view using the given git log options. - * - * diff [git diff options]:: - * Open diff view using the given git diff options. - * - * show [git show options]:: - * Open diff view using the given git show options. - **/ - if (!strcmp(opt, "log") || - !strcmp(opt, "diff") || - !strcmp(opt, "show")) { - opt_request = opt[0] == 'l' - ? REQ_VIEW_LOG : REQ_VIEW_DIFF; - break; + if (!strcmp(opt, "-l")) { + opt_request = REQ_VIEW_LOG; + } else if (!strcmp(opt, "-d")) { + opt_request = REQ_VIEW_DIFF; + } else if (check_option(opt, 'n', "line-number", OPT_INT, &opt_num_interval)) { + opt_line_number = TRUE; + } else if (check_option(opt, 'b', "tab-size", OPT_INT, &opt_tab_size)) { + opt_tab_size = MIN(opt_tab_size, TABSIZE); + } else { + if (altargc >= ARRAY_SIZE(altargv)) + die("maximum number of arguments exceeded"); + altargv[altargc++] = opt; + continue; } - /** - * [git log options]:: - * tig(1) will stop the option parsing when the first - * command line parameter not starting with "-" is - * encountered. All options including this one will be - * passed to git log when loading the main view. - * This makes it possible to say: - * - * $ tig tag-1.0..HEAD - **/ - if (opt[0] && opt[0] != '-') - break; - - die("unknown command '%s'", opt); + warn("`%s' has been deprecated", opt); } + /* Check that no 'alt' arguments occured before a subcommand. */ + if (subcommand && i < argc && altargc > 0) + die("unknown arguments before `%s'", argv[i]); + if (!isatty(STDIN_FILENO)) { - /** - * Pager mode - * ~~~~~~~~~~ - * If stdin is a pipe, any log or diff options will be ignored and the - * pager view will be opened loading data from stdin. The pager mode - * can be used for colorizing output from various git commands. - * - * Example on how to colorize the output of git-show(1): - * - * $ git show | tig - **/ opt_request = REQ_VIEW_PAGER; opt_pipe = stdin; - } else if (i < argc) { - size_t buf_size; + } else if (opt_request == REQ_VIEW_STATUS) { + if (argc - i > 1) + warn("ignoring arguments after `%s'", argv[i]); - /** - * Git command options - * ~~~~~~~~~~~~~~~~~~~ - * All git command options specified on the command line will - * be passed to the given command and all will be shell quoted - * before they are passed to the shell. - * - * NOTE: If you specify options for the main view, you should - * not use the `--pretty` option as this option will be set - * automatically to the format expected by the main view. - * - * Example on how to open the log view and show both author and - * committer information: - * - * $ tig log --pretty=fuller - * - * See the <> section below - * for an introduction to revision options supported by the git - * commands. For details on specific git command options, refer - * to the man page of the command in question. - **/ + } else if (i < argc || altargc > 0) { + int alti = 0; + size_t buf_size; if (opt_request == REQ_VIEW_MAIN) /* XXX: This is vulnerable to the user overriding * options required for the main view parser. */ - string_copy(opt_cmd, "git log --stat --pretty=raw"); + string_copy(opt_cmd, "git log --no-color --pretty=raw --boundary"); else string_copy(opt_cmd, "git"); buf_size = strlen(opt_cmd); + while (buf_size < sizeof(opt_cmd) && alti < altargc) { + opt_cmd[buf_size++] = ' '; + buf_size = sq_quote(opt_cmd, buf_size, altargv[alti++]); + } + while (buf_size < sizeof(opt_cmd) && i < argc) { opt_cmd[buf_size++] = ' '; buf_size = sq_quote(opt_cmd, buf_size, argv[i++]); @@ -435,7 +593,6 @@ parse_options(int argc, char *argv[]) die("command too long"); opt_cmd[buf_size] = 0; - } if (*opt_encoding && strcasecmp(opt_encoding, "UTF-8")) @@ -445,118 +602,39 @@ parse_options(int argc, char *argv[]) } -/** - * ENVIRONMENT VARIABLES - * --------------------- - * Several options related to the interface with git can be configured - * via environment options. - * - * Repository references - * ~~~~~~~~~~~~~~~~~~~~~ - * Commits that are referenced by tags and branch heads will be marked - * by the reference name surrounded by '[' and ']': - * - * 2006-03-26 19:42 Petr Baudis | [cogito-0.17.1] Cogito 0.17.1 - * - * If you want to filter out certain directories under `.git/refs/`, say - * `tmp` you can do it by setting the following variable: - * - * $ TIG_LS_REMOTE="git ls-remote . | sed /\/tmp\//d" tig - * - * Or set the variable permanently in your environment. - * - * TIG_LS_REMOTE:: - * Set command for retrieving all repository references. The command - * should output data in the same format as git-ls-remote(1). - **/ - -#define TIG_LS_REMOTE \ - "git ls-remote . 2>/dev/null" - -/** - * [[history-commands]] - * History commands - * ~~~~~~~~~~~~~~~~ - * It is possible to alter which commands are used for the different views. - * If for example you prefer commits in the main view to be sorted by date - * and only show 500 commits, use: - * - * $ TIG_MAIN_CMD="git log --date-order -n500 --pretty=raw %s" tig - * - * Or set the variable permanently in your environment. - * - * Notice, how `%s` is used to specify the commit reference. There can - * be a maximum of 5 `%s` ref specifications. - * - * TIG_DIFF_CMD:: - * The command used for the diff view. By default, git show is used - * as a backend. - * - * TIG_LOG_CMD:: - * The command used for the log view. If you prefer to have both - * author and committer shown in the log view be sure to pass - * `--pretty=fuller` to git log. - * - * TIG_MAIN_CMD:: - * The command used for the main view. Note, you must always specify - * the option: `--pretty=raw` since the main view parser expects to - * read that format. - **/ - -#define TIG_DIFF_CMD \ - "git show --patch-with-stat --find-copies-harder -B -C %s" - -#define TIG_LOG_CMD \ - "git log --cc --stat -n100 %s" - -#define TIG_MAIN_CMD \ - "git log --topo-order --stat --pretty=raw %s" - -/* ... silently ignore that the following are also exported. */ - -#define TIG_HELP_CMD \ - "man tig 2>/dev/null" - -#define TIG_PAGER_CMD \ - "" - - /* * Line-oriented content detection. */ #define LINE_INFO \ -/* Line type String to match Foreground Background Attributes - * --------- --------------- ---------- ---------- ---------- */ \ -/* Diff markup */ \ -LINE(DIFF, "diff --git ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ -LINE(DIFF_INDEX, "index ", COLOR_BLUE, COLOR_DEFAULT, 0), \ +LINE(DIFF_HEADER, "diff --git ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ LINE(DIFF_CHUNK, "@@", COLOR_MAGENTA, COLOR_DEFAULT, 0), \ LINE(DIFF_ADD, "+", COLOR_GREEN, COLOR_DEFAULT, 0), \ LINE(DIFF_DEL, "-", COLOR_RED, COLOR_DEFAULT, 0), \ -LINE(DIFF_OLDMODE, "old file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ -LINE(DIFF_NEWMODE, "new file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ -LINE(DIFF_COPY, "copy ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ -LINE(DIFF_RENAME, "rename ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ -LINE(DIFF_SIM, "similarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ -LINE(DIFF_DISSIM, "dissimilarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ -/* Pretty print commit header */ \ +LINE(DIFF_INDEX, "index ", COLOR_BLUE, COLOR_DEFAULT, 0), \ +LINE(DIFF_OLDMODE, "old file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ +LINE(DIFF_NEWMODE, "new file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ +LINE(DIFF_COPY_FROM, "copy from", COLOR_YELLOW, COLOR_DEFAULT, 0), \ +LINE(DIFF_COPY_TO, "copy to", COLOR_YELLOW, COLOR_DEFAULT, 0), \ +LINE(DIFF_RENAME_FROM, "rename from", COLOR_YELLOW, COLOR_DEFAULT, 0), \ +LINE(DIFF_RENAME_TO, "rename to", COLOR_YELLOW, COLOR_DEFAULT, 0), \ +LINE(DIFF_SIMILARITY, "similarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ +LINE(DIFF_DISSIMILARITY,"dissimilarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ +LINE(DIFF_TREE, "diff-tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \ LINE(PP_AUTHOR, "Author: ", COLOR_CYAN, COLOR_DEFAULT, 0), \ LINE(PP_COMMIT, "Commit: ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \ LINE(PP_MERGE, "Merge: ", COLOR_BLUE, COLOR_DEFAULT, 0), \ LINE(PP_DATE, "Date: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ LINE(PP_ADATE, "AuthorDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ LINE(PP_CDATE, "CommitDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ -/* Raw commit header */ \ +LINE(PP_REFS, "Refs: ", COLOR_RED, COLOR_DEFAULT, 0), \ LINE(COMMIT, "commit ", COLOR_GREEN, COLOR_DEFAULT, 0), \ LINE(PARENT, "parent ", COLOR_BLUE, COLOR_DEFAULT, 0), \ LINE(TREE, "tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \ LINE(AUTHOR, "author ", COLOR_CYAN, COLOR_DEFAULT, 0), \ LINE(COMMITTER, "committer ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \ -/* Misc */ \ -LINE(DIFF_TREE, "diff-tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \ LINE(SIGNOFF, " Signed-off-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \ -/* UI colors */ \ +LINE(ACKED, " Acked-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \ LINE(DEFAULT, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \ LINE(CURSOR, "", COLOR_WHITE, COLOR_GREEN, A_BOLD), \ LINE(STATUS, "", COLOR_GREEN, COLOR_DEFAULT, 0), \ @@ -567,7 +645,16 @@ LINE(MAIN_AUTHOR, "", COLOR_GREEN, COLOR_DEFAULT, 0), \ LINE(MAIN_COMMIT, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \ LINE(MAIN_DELIM, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \ LINE(MAIN_TAG, "", COLOR_MAGENTA, COLOR_DEFAULT, A_BOLD), \ -LINE(MAIN_REF, "", COLOR_CYAN, COLOR_DEFAULT, A_BOLD), +LINE(MAIN_REMOTE, "", COLOR_YELLOW, COLOR_DEFAULT, A_BOLD), \ +LINE(MAIN_REF, "", COLOR_CYAN, COLOR_DEFAULT, A_BOLD), \ +LINE(MAIN_REVGRAPH,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \ +LINE(TREE_DIR, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \ +LINE(TREE_FILE, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \ +LINE(STAT_SECTION, "", COLOR_CYAN, COLOR_DEFAULT, 0), \ +LINE(STAT_NONE, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \ +LINE(STAT_STAGED, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \ +LINE(STAT_UNSTAGED,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \ +LINE(STAT_UNTRACKED,"", COLOR_MAGENTA, COLOR_DEFAULT, 0) enum line_type { #define LINE(type, line, fg, bg, attr) \ @@ -577,6 +664,8 @@ enum line_type { }; struct line_info { + const char *name; /* Option name. */ + int namelen; /* Size of option name. */ const char *line; /* The start of line to match. */ int linelen; /* Size of string to match. */ int fg, bg, attr; /* Color and text attributes for the lines. */ @@ -584,7 +673,7 @@ struct line_info { static struct line_info line_info[] = { #define LINE(type, line, fg, bg, attr) \ - { (line), STRING_SIZE(line), (fg), (bg), (attr) } + { #type, STRING_SIZE(#type), (line), STRING_SIZE(line), (fg), (bg), (attr) } LINE_INFO #undef LINE }; @@ -611,18 +700,31 @@ get_line_attr(enum line_type type) return COLOR_PAIR(type) | line_info[type].attr; } +static struct line_info * +get_line_info(char *name, int namelen) +{ + enum line_type type; + + for (type = 0; type < ARRAY_SIZE(line_info); type++) + if (namelen == line_info[type].namelen && + !string_enum_compare(line_info[type].name, name, namelen)) + return &line_info[type]; + + return NULL; +} + static void init_colors(void) { - int default_bg = COLOR_BLACK; - int default_fg = COLOR_WHITE; + int default_bg = line_info[LINE_DEFAULT].bg; + int default_fg = line_info[LINE_DEFAULT].fg; enum line_type type; start_color(); - if (use_default_colors() != ERR) { - default_bg = -1; - default_fg = -1; + if (assume_default_colors(default_fg, default_bg) == ERR) { + default_bg = COLOR_BLACK; + default_fg = COLOR_WHITE; } for (type = 0; type < ARRAY_SIZE(line_info); type++) { @@ -636,1042 +738,3379 @@ init_colors(void) struct line { enum line_type type; - void *data; /* User data */ -}; + /* State flags */ + unsigned int selected:1; -/** - * The viewer - * ---------- - * The display consists of a status window on the last line of the screen and - * one or more views. The default is to only show one view at the time but it - * is possible to split both the main and log view to also show the commit - * diff. - * - * If you are in the log view and press 'Enter' when the current line is a - * commit line, such as: - * - * commit 4d55caff4cc89335192f3e566004b4ceef572521 - * - * You will split the view so that the log view is displayed in the top window - * and the diff view in the bottom window. You can switch between the two - * views by pressing 'Tab'. To maximize the log view again, simply press 'l'. - **/ + void *data; /* User data */ +}; -struct view; -struct view_ops; -/* The display array of active views and the index of the current view. */ -static struct view *display[2]; -static unsigned int current_view; +/* + * Keys + */ -#define foreach_view(view, i) \ - for (i = 0; i < ARRAY_SIZE(display) && (view = display[i]); i++) +struct keybinding { + int alias; + enum request request; + struct keybinding *next; +}; -#define displayed_views() (display[1] != NULL ? 2 : 1) +static struct keybinding default_keybindings[] = { + /* View switching */ + { 'm', REQ_VIEW_MAIN }, + { 'd', REQ_VIEW_DIFF }, + { 'l', REQ_VIEW_LOG }, + { 't', REQ_VIEW_TREE }, + { 'f', REQ_VIEW_BLOB }, + { 'p', REQ_VIEW_PAGER }, + { 'h', REQ_VIEW_HELP }, + { 'S', REQ_VIEW_STATUS }, + { 'c', REQ_VIEW_STAGE }, -/** - * Current head and commit ID - * ~~~~~~~~~~~~~~~~~~~~~~~~~~ - * The viewer keeps track of both what head and commit ID you are currently - * viewing. The commit ID will follow the cursor line and change everytime time - * you highlight a different commit. Whenever you reopen the diff view it - * will be reloaded, if the commit ID changed. - * - * The head ID is used when opening the main and log view to indicate from - * what revision to show history. - **/ - -static char ref_commit[SIZEOF_REF] = "HEAD"; -static char ref_head[SIZEOF_REF] = "HEAD"; - -struct view { - const char *name; /* View name */ - const char *cmd_fmt; /* Default command line format */ - const char *cmd_env; /* Command line set via environment */ - const char *id; /* Points to either of ref_{head,commit} */ - - struct view_ops *ops; /* View operations */ - - char cmd[SIZEOF_CMD]; /* Command buffer */ - char ref[SIZEOF_REF]; /* Hovered commit reference */ - char vid[SIZEOF_REF]; /* View ID. Set to id member when updating. */ + /* View manipulation */ + { 'q', REQ_VIEW_CLOSE }, + { KEY_TAB, REQ_VIEW_NEXT }, + { KEY_RETURN, REQ_ENTER }, + { KEY_UP, REQ_PREVIOUS }, + { KEY_DOWN, REQ_NEXT }, + { 'R', REQ_REFRESH }, - int height, width; /* The width and height of the main window */ - WINDOW *win; /* The main window */ - WINDOW *title; /* The title window living below the main window */ + /* Cursor navigation */ + { 'k', REQ_MOVE_UP }, + { 'j', REQ_MOVE_DOWN }, + { KEY_HOME, REQ_MOVE_FIRST_LINE }, + { KEY_END, REQ_MOVE_LAST_LINE }, + { KEY_NPAGE, REQ_MOVE_PAGE_DOWN }, + { ' ', REQ_MOVE_PAGE_DOWN }, + { KEY_PPAGE, REQ_MOVE_PAGE_UP }, + { 'b', REQ_MOVE_PAGE_UP }, + { '-', REQ_MOVE_PAGE_UP }, - /* Navigation */ - unsigned long offset; /* Offset of the window top */ - unsigned long lineno; /* Current line number */ + /* Scrolling */ + { KEY_IC, REQ_SCROLL_LINE_UP }, + { KEY_DC, REQ_SCROLL_LINE_DOWN }, + { 'w', REQ_SCROLL_PAGE_UP }, + { 's', REQ_SCROLL_PAGE_DOWN }, - /* If non-NULL, points to the view that opened this view. If this view - * is closed tig will switch back to the parent view. */ - struct view *parent; + /* Searching */ + { '/', REQ_SEARCH }, + { '?', REQ_SEARCH_BACK }, + { 'n', REQ_FIND_NEXT }, + { 'N', REQ_FIND_PREV }, - /* Buffering */ - unsigned long lines; /* Total number of lines */ - struct line *line; /* Line index */ - unsigned int digits; /* Number of digits in the lines member. */ + /* Misc */ + { 'Q', REQ_QUIT }, + { 'z', REQ_STOP_LOADING }, + { 'v', REQ_SHOW_VERSION }, + { 'r', REQ_SCREEN_REDRAW }, + { '.', REQ_TOGGLE_LINENO }, + { 'g', REQ_TOGGLE_REV_GRAPH }, + { ':', REQ_PROMPT }, + { 'u', REQ_STATUS_UPDATE }, + { 'M', REQ_STATUS_MERGE }, + { ',', REQ_TREE_PARENT }, + { 'e', REQ_EDIT }, - /* Loading */ - FILE *pipe; - time_t start_time; + /* Using the ncurses SIGWINCH handler. */ + { KEY_RESIZE, REQ_SCREEN_RESIZE }, }; -struct view_ops { - /* What type of content being displayed. Used in the title bar. */ - const char *type; - /* Draw one line; @lineno must be < view->height. */ - bool (*draw)(struct view *view, struct line *line, unsigned int lineno); - /* Read one line; updates view->line. */ - bool (*read)(struct view *view, struct line *prev, char *data); - /* Depending on view, change display based on current line. */ - bool (*enter)(struct view *view, struct line *line); +#define KEYMAP_INFO \ + KEYMAP_(GENERIC), \ + KEYMAP_(MAIN), \ + KEYMAP_(DIFF), \ + KEYMAP_(LOG), \ + KEYMAP_(TREE), \ + KEYMAP_(BLOB), \ + KEYMAP_(PAGER), \ + KEYMAP_(HELP), \ + KEYMAP_(STATUS), \ + KEYMAP_(STAGE) + +enum keymap { +#define KEYMAP_(name) KEYMAP_##name + KEYMAP_INFO +#undef KEYMAP_ }; -static struct view_ops pager_ops; -static struct view_ops main_ops; - -#define VIEW_STR(name, cmd, env, ref, ops) \ - { name, cmd, #env, ref, ops } - -#define VIEW_(id, name, ops, ref) \ - VIEW_STR(name, TIG_##id##_CMD, TIG_##id##_CMD, ref, ops) - -/** - * Views - * ~~~~~ - * tig(1) presents various 'views' of a repository. Each view is based on output - * from an external command, most often 'git log', 'git diff', or 'git show'. - * - * The main view:: - * Is the default view, and it shows a one line summary of each commit - * in the chosen list of revisions. The summary includes commit date, - * author, and the first line of the log message. Additionally, any - * repository references, such as tags, will be shown. - * - * The log view:: - * Presents a more rich view of the revision log showing the whole log - * message and the diffstat. - * - * The diff view:: - * Shows either the diff of the current working tree, that is, what - * has changed since the last commit, or the commit diff complete - * with log message, diffstat and diff. - * - * The pager view:: - * Is used for displaying both input from stdin and output from git - * commands entered in the internal prompt. - * - * The help view:: - * Displays the information from the tig(1) man page. For the help view - * to work you need to have the tig(1) man page installed. - **/ - -static struct view views[] = { - VIEW_(MAIN, "main", &main_ops, ref_head), - VIEW_(DIFF, "diff", &pager_ops, ref_commit), - VIEW_(LOG, "log", &pager_ops, ref_head), - VIEW_(HELP, "help", &pager_ops, "static"), - VIEW_(PAGER, "pager", &pager_ops, "static"), +static struct int_map keymap_table[] = { +#define KEYMAP_(name) { #name, STRING_SIZE(#name), KEYMAP_##name } + KEYMAP_INFO +#undef KEYMAP_ }; -#define VIEW(req) (&views[(req) - REQ_OFFSET - 1]) +#define set_keymap(map, name) \ + set_from_int_map(keymap_table, ARRAY_SIZE(keymap_table), map, name, strlen(name)) +static struct keybinding *keybindings[ARRAY_SIZE(keymap_table)]; -static bool -draw_view_line(struct view *view, unsigned int lineno) +static void +add_keybinding(enum keymap keymap, enum request request, int key) { - if (view->offset + lineno >= view->lines) - return FALSE; + struct keybinding *keybinding; - return view->ops->draw(view, &view->line[view->offset + lineno], lineno); + keybinding = calloc(1, sizeof(*keybinding)); + if (!keybinding) + die("Failed to allocate keybinding"); + + keybinding->alias = key; + keybinding->request = request; + keybinding->next = keybindings[keymap]; + keybindings[keymap] = keybinding; } -static void -redraw_view_from(struct view *view, int lineno) +/* Looks for a key binding first in the given map, then in the generic map, and + * lastly in the default keybindings. */ +static enum request +get_keybinding(enum keymap keymap, int key) { - assert(0 <= lineno && lineno < view->height); + struct keybinding *kbd; + int i; - for (; lineno < view->height; lineno++) { - if (!draw_view_line(view, lineno)) - break; - } + for (kbd = keybindings[keymap]; kbd; kbd = kbd->next) + if (kbd->alias == key) + return kbd->request; - redrawwin(view->win); - wrefresh(view->win); -} + for (kbd = keybindings[KEYMAP_GENERIC]; kbd; kbd = kbd->next) + if (kbd->alias == key) + return kbd->request; -static void -redraw_view(struct view *view) -{ - wclear(view->win); - redraw_view_from(view, 0); -} + for (i = 0; i < ARRAY_SIZE(default_keybindings); i++) + if (default_keybindings[i].alias == key) + return default_keybindings[i].request; + return (enum request) key; +} -/** - * Title windows - * ~~~~~~~~~~~~~ - * Each view has a title window which shows the name of the view, current - * commit ID if available, and where the view is positioned: - * - * [main] c622eefaa485995320bc743431bae0d497b1d875 - commit 1 of 61 (1%) - * - * By default, the title of the current view is highlighted using bold font. - * For long loading views (taking over 3 seconds) the time since loading - * started will be appended: - * - * [main] 77d9e40fbcea3238015aea403e06f61542df9a31 - commit 1 of 779 (0%) 5s - **/ -static void -update_view_title(struct view *view) -{ - if (view == display[current_view]) - wbkgdset(view->title, get_line_attr(LINE_TITLE_FOCUS)); - else - wbkgdset(view->title, get_line_attr(LINE_TITLE_BLUR)); +struct key { + char *name; + int value; +}; - werase(view->title); - wmove(view->title, 0, 0); +static struct key key_table[] = { + { "Enter", KEY_RETURN }, + { "Space", ' ' }, + { "Backspace", KEY_BACKSPACE }, + { "Tab", KEY_TAB }, + { "Escape", KEY_ESC }, + { "Left", KEY_LEFT }, + { "Right", KEY_RIGHT }, + { "Up", KEY_UP }, + { "Down", KEY_DOWN }, + { "Insert", KEY_IC }, + { "Delete", KEY_DC }, + { "Hash", '#' }, + { "Home", KEY_HOME }, + { "End", KEY_END }, + { "PageUp", KEY_PPAGE }, + { "PageDown", KEY_NPAGE }, + { "F1", KEY_F(1) }, + { "F2", KEY_F(2) }, + { "F3", KEY_F(3) }, + { "F4", KEY_F(4) }, + { "F5", KEY_F(5) }, + { "F6", KEY_F(6) }, + { "F7", KEY_F(7) }, + { "F8", KEY_F(8) }, + { "F9", KEY_F(9) }, + { "F10", KEY_F(10) }, + { "F11", KEY_F(11) }, + { "F12", KEY_F(12) }, +}; - if (*view->ref) - wprintw(view->title, "[%s] %s", view->name, view->ref); - else - wprintw(view->title, "[%s]", view->name); +static int +get_key_value(const char *name) +{ + int i; - if (view->lines || view->pipe) { - unsigned int lines = view->lines - ? (view->lineno + 1) * 100 / view->lines - : 0; + for (i = 0; i < ARRAY_SIZE(key_table); i++) + if (!strcasecmp(key_table[i].name, name)) + return key_table[i].value; - wprintw(view->title, " - %s %d of %d (%d%%)", - view->ops->type, - view->lineno + 1, - view->lines, - lines); - } + if (strlen(name) == 1 && isprint(*name)) + return (int) *name; - if (view->pipe) { - time_t secs = time(NULL) - view->start_time; + return ERR; +} - /* Three git seconds are a long time ... */ - if (secs > 2) - wprintw(view->title, " %lds", secs); +static char * +get_key_name(int key_value) +{ + static char key_char[] = "'X'"; + char *seq = NULL; + int key; + + for (key = 0; key < ARRAY_SIZE(key_table); key++) + if (key_table[key].value == key_value) + seq = key_table[key].name; + + if (seq == NULL && + key_value < 127 && + isprint(key_value)) { + key_char[1] = (char) key_value; + seq = key_char; } - wmove(view->title, 0, view->width - 1); - wrefresh(view->title); + return seq ? seq : "'?'"; } -static void -resize_display(void) +static char * +get_key(enum request request) { - int offset, i; - struct view *base = display[0]; - struct view *view = display[1] ? display[1] : display[0]; - - /* Setup window dimensions */ + static char buf[BUFSIZ]; + size_t pos = 0; + char *sep = ""; + int i; - getmaxyx(stdscr, base->height, base->width); + buf[pos] = 0; - /* Make room for the status window. */ - base->height -= 1; + for (i = 0; i < ARRAY_SIZE(default_keybindings); i++) { + struct keybinding *keybinding = &default_keybindings[i]; - if (view != base) { - /* Horizontal split. */ - view->width = base->width; - view->height = SCALE_SPLIT_VIEW(base->height); - base->height -= view->height; + if (keybinding->request != request) + continue; - /* Make room for the title bar. */ - view->height -= 1; + if (!string_format_from(buf, &pos, "%s%s", sep, + get_key_name(keybinding->alias))) + return "Too many keybindings!"; + sep = ", "; } - /* Make room for the title bar. */ - base->height -= 1; + return buf; +} - offset = 0; +struct run_request { + enum keymap keymap; + int key; + char cmd[SIZEOF_STR]; +}; - foreach_view (view, i) { - if (!view->win) { - view->win = newwin(view->height, 0, offset, 0); - if (!view->win) - die("Failed to create %s view", view->name); +static struct run_request *run_request; +static size_t run_requests; - scrollok(view->win, TRUE); +static enum request +add_run_request(enum keymap keymap, int key, int argc, char **argv) +{ + struct run_request *tmp; + struct run_request req = { keymap, key }; + size_t bufpos; - view->title = newwin(1, 0, offset + view->height, 0); - if (!view->title) - die("Failed to create title window"); + for (bufpos = 0; argc > 0; argc--, argv++) + if (!string_format_from(req.cmd, &bufpos, "%s ", *argv)) + return REQ_NONE; - } else { - wresize(view->win, view->height, view->width); - mvwin(view->win, offset, 0); - mvwin(view->title, offset + view->height, 0); - } + req.cmd[bufpos - 1] = 0; - offset += view->height + 1; - } + tmp = realloc(run_request, (run_requests + 1) * sizeof(*run_request)); + if (!tmp) + return REQ_NONE; + + run_request = tmp; + run_request[run_requests++] = req; + + return REQ_NONE + run_requests; } -static void -redraw_display(void) +static struct run_request * +get_run_request(enum request request) { - struct view *view; - int i; - - foreach_view (view, i) { - redraw_view(view); - update_view_title(view); - } + if (request <= REQ_NONE) + return NULL; + return &run_request[request - REQ_NONE - 1]; } static void -update_display_cursor(void) +add_builtin_run_requests(void) { - struct view *view = display[current_view]; + struct { + enum keymap keymap; + int key; + char *argv[1]; + } reqs[] = { + { KEYMAP_MAIN, 'C', { "git cherry-pick %(commit)" } }, + { KEYMAP_GENERIC, 'G', { "git gc" } }, + }; + int i; - /* Move the cursor to the right-most column of the cursor line. - * - * XXX: This could turn out to be a bit expensive, but it ensures that - * the cursor does not jump around. */ - if (view->lines) { - wmove(view->win, view->lineno - view->offset, view->width - 1); - wrefresh(view->win); + for (i = 0; i < ARRAY_SIZE(reqs); i++) { + enum request req; + + req = add_run_request(reqs[i].keymap, reqs[i].key, 1, reqs[i].argv); + if (req != REQ_NONE) + add_keybinding(reqs[i].keymap, req, reqs[i].key); } } /* - * Navigation + * User config file handling. */ -/* Scrolling backend */ -static void -do_scroll_view(struct view *view, int lines, bool redraw) -{ - /* The rendering expects the new offset. */ - view->offset += lines; +static struct int_map color_map[] = { +#define COLOR_MAP(name) { #name, STRING_SIZE(#name), COLOR_##name } + COLOR_MAP(DEFAULT), + COLOR_MAP(BLACK), + COLOR_MAP(BLUE), + COLOR_MAP(CYAN), + COLOR_MAP(GREEN), + COLOR_MAP(MAGENTA), + COLOR_MAP(RED), + COLOR_MAP(WHITE), + COLOR_MAP(YELLOW), +}; - assert(0 <= view->offset && view->offset < view->lines); - assert(lines); +#define set_color(color, name) \ + set_from_int_map(color_map, ARRAY_SIZE(color_map), color, name, strlen(name)) + +static struct int_map attr_map[] = { +#define ATTR_MAP(name) { #name, STRING_SIZE(#name), A_##name } + ATTR_MAP(NORMAL), + ATTR_MAP(BLINK), + ATTR_MAP(BOLD), + ATTR_MAP(DIM), + ATTR_MAP(REVERSE), + ATTR_MAP(STANDOUT), + ATTR_MAP(UNDERLINE), +}; - /* Redraw the whole screen if scrolling is pointless. */ - if (view->height < ABS(lines)) { - redraw_view(view); +#define set_attribute(attr, name) \ + set_from_int_map(attr_map, ARRAY_SIZE(attr_map), attr, name, strlen(name)) - } else { - int line = lines > 0 ? view->height - lines : 0; - int end = line + ABS(lines); +static int config_lineno; +static bool config_errors; +static char *config_msg; - wscrl(view->win, lines); +/* Wants: object fgcolor bgcolor [attr] */ +static int +option_color_command(int argc, char *argv[]) +{ + struct line_info *info; - for (; line < end; line++) { - if (!draw_view_line(view, line)) - break; - } + if (argc != 3 && argc != 4) { + config_msg = "Wrong number of arguments given to color command"; + return ERR; } - /* Move current line into the view. */ - if (view->lineno < view->offset) { - view->lineno = view->offset; - draw_view_line(view, 0); - - } else if (view->lineno >= view->offset + view->height) { - if (view->lineno == view->offset + view->height) { - /* Clear the hidden line so it doesn't show if the view - * is scrolled up. */ - wmove(view->win, view->height, 0); - wclrtoeol(view->win); - } - view->lineno = view->offset + view->height - 1; - draw_view_line(view, view->lineno - view->offset); + info = get_line_info(argv[0], strlen(argv[0])); + if (!info) { + config_msg = "Unknown color name"; + return ERR; } - assert(view->offset <= view->lineno && view->lineno < view->lines); + if (set_color(&info->fg, argv[1]) == ERR || + set_color(&info->bg, argv[2]) == ERR) { + config_msg = "Unknown color"; + return ERR; + } - if (!redraw) - return; + if (argc == 4 && set_attribute(&info->attr, argv[3]) == ERR) { + config_msg = "Unknown attribute"; + return ERR; + } - redrawwin(view->win); - wrefresh(view->win); - report(""); + return OK; } -/* Scroll frontend */ -static void -scroll_view(struct view *view, enum request request) +/* Wants: name = value */ +static int +option_set_command(int argc, char *argv[]) { - int lines = 1; + if (argc != 3) { + config_msg = "Wrong number of arguments given to set command"; + return ERR; + } - switch (request) { - case REQ_SCROLL_PAGE_DOWN: - lines = view->height; - case REQ_SCROLL_LINE_DOWN: - if (view->offset + lines > view->lines) - lines = view->lines - view->offset; + if (strcmp(argv[1], "=")) { + config_msg = "No value assigned"; + return ERR; + } - if (lines == 0 || view->offset + view->height >= view->lines) { - report("Cannot scroll beyond the last line"); - return; - } - break; + if (!strcmp(argv[0], "show-rev-graph")) { + opt_rev_graph = (!strcmp(argv[2], "1") || + !strcmp(argv[2], "true") || + !strcmp(argv[2], "yes")); + return OK; + } - case REQ_SCROLL_PAGE_UP: - lines = view->height; - case REQ_SCROLL_LINE_UP: - if (lines > view->offset) - lines = view->offset; + if (!strcmp(argv[0], "line-number-interval")) { + opt_num_interval = atoi(argv[2]); + return OK; + } - if (lines == 0) { - report("Cannot scroll beyond the first line"); - return; - } + if (!strcmp(argv[0], "tab-size")) { + opt_tab_size = atoi(argv[2]); + return OK; + } - lines = -lines; - break; + if (!strcmp(argv[0], "commit-encoding")) { + char *arg = argv[2]; + int delimiter = *arg; + int i; - default: - die("request %d not handled in switch", request); + switch (delimiter) { + case '"': + case '\'': + for (arg++, i = 0; arg[i]; i++) + if (arg[i] == delimiter) { + arg[i] = 0; + break; + } + default: + string_ncopy(opt_encoding, arg, strlen(arg)); + return OK; + } } - do_scroll_view(view, lines, TRUE); + config_msg = "Unknown variable name"; + return ERR; } -/* Cursor moving */ -static void -move_view(struct view *view, enum request request, bool redraw) +/* Wants: mode request key */ +static int +option_bind_command(int argc, char *argv[]) { - int steps; - - switch (request) { - case REQ_MOVE_FIRST_LINE: - steps = -view->lineno; - break; - - case REQ_MOVE_LAST_LINE: - steps = view->lines - view->lineno - 1; - break; - - case REQ_MOVE_PAGE_UP: - steps = view->height > view->lineno - ? -view->lineno : -view->height; - break; - - case REQ_MOVE_PAGE_DOWN: - steps = view->lineno + view->height >= view->lines - ? view->lines - view->lineno - 1 : view->height; - break; + enum request request; + int keymap; + int key; - case REQ_MOVE_UP: - steps = -1; - break; + if (argc < 3) { + config_msg = "Wrong number of arguments given to bind command"; + return ERR; + } - case REQ_MOVE_DOWN: - steps = 1; - break; + if (set_keymap(&keymap, argv[0]) == ERR) { + config_msg = "Unknown key map"; + return ERR; + } - default: - die("request %d not handled in switch", request); + key = get_key_value(argv[1]); + if (key == ERR) { + config_msg = "Unknown key"; + return ERR; } - if (steps <= 0 && view->lineno == 0) { - report("Cannot move beyond the first line"); - return; + request = get_request(argv[2]); + if (request == REQ_NONE) { + const char *obsolete[] = { "cherry-pick" }; + size_t namelen = strlen(argv[2]); + int i; - } else if (steps >= 0 && view->lineno + 1 >= view->lines) { - report("Cannot move beyond the last line"); - return; + for (i = 0; i < ARRAY_SIZE(obsolete); i++) { + if (namelen == strlen(obsolete[i]) && + !string_enum_compare(obsolete[i], argv[2], namelen)) { + config_msg = "Obsolete request name"; + return ERR; + } + } + } + if (request == REQ_NONE && *argv[2]++ == '!') + request = add_run_request(keymap, key, argc - 2, argv + 2); + if (request == REQ_NONE) { + config_msg = "Unknown request name"; + return ERR; } - /* Move the current line */ - view->lineno += steps; - assert(0 <= view->lineno && view->lineno < view->lines); + add_keybinding(keymap, request, key); - /* Repaint the old "current" line if we be scrolling */ - if (ABS(steps) < view->height) { - int prev_lineno = view->lineno - steps - view->offset; + return OK; +} - wmove(view->win, prev_lineno, 0); - wclrtoeol(view->win); - draw_view_line(view, prev_lineno); - } +static int +set_option(char *opt, char *value) +{ + char *argv[16]; + int valuelen; + int argc = 0; - /* Check whether the view needs to be scrolled */ - if (view->lineno < view->offset || - view->lineno >= view->offset + view->height) { - if (steps < 0 && -steps > view->offset) { - steps = -view->offset; + /* Tokenize */ + while (argc < ARRAY_SIZE(argv) && (valuelen = strcspn(value, " \t"))) { + argv[argc++] = value; + value += valuelen; - } else if (steps > 0) { - if (view->lineno == view->lines - 1 && - view->lines > view->height) { - steps = view->lines - view->offset - 1; - if (steps >= view->height) - steps -= view->height - 1; - } - } + /* Nothing more to tokenize or last available token. */ + if (!*value || argc >= ARRAY_SIZE(argv)) + break; - do_scroll_view(view, steps, redraw); - return; + *value++ = 0; + while (isspace(*value)) + value++; } - /* Draw the current line */ - draw_view_line(view, view->lineno - view->offset); + if (!strcmp(opt, "color")) + return option_color_command(argc, argv); - if (!redraw) - return; + if (!strcmp(opt, "set")) + return option_set_command(argc, argv); - redrawwin(view->win); - wrefresh(view->win); - report(""); + if (!strcmp(opt, "bind")) + return option_bind_command(argc, argv); + + config_msg = "Unknown option command"; + return ERR; } +static int +read_option(char *opt, size_t optlen, char *value, size_t valuelen) +{ + int status = OK; -/* - * Incremental updating - */ + config_lineno++; + config_msg = "Internal error"; -static void -end_update(struct view *view) -{ - if (!view->pipe) - return; - set_nonblocking_input(FALSE); - if (view->pipe == stdin) - fclose(view->pipe); - else - pclose(view->pipe); - view->pipe = NULL; -} + /* Check for comment markers, since read_properties() will + * only ensure opt and value are split at first " \t". */ + optlen = strcspn(opt, "#"); + if (optlen == 0) + return OK; -static bool -begin_update(struct view *view) -{ - const char *id = view->id; + if (opt[optlen] != 0) { + config_msg = "No option value"; + status = ERR; - if (view->pipe) - end_update(view); + } else { + /* Look for comment endings in the value. */ + size_t len = strcspn(value, "#"); - if (opt_cmd[0]) { - string_copy(view->cmd, opt_cmd); - opt_cmd[0] = 0; - /* When running random commands, the view ref could have become - * invalid so clear it. */ - view->ref[0] = 0; - } else { - const char *format = view->cmd_env ? view->cmd_env : view->cmd_fmt; + if (len < valuelen) { + valuelen = len; + value[valuelen] = 0; + } - if (snprintf(view->cmd, sizeof(view->cmd), format, - id, id, id, id, id) >= sizeof(view->cmd)) - return FALSE; + status = set_option(opt, value); } - /* Special case for the pager view. */ - if (opt_pipe) { - view->pipe = opt_pipe; - opt_pipe = NULL; - } else { - view->pipe = popen(view->cmd, "r"); + if (status == ERR) { + fprintf(stderr, "Error on line %d, near '%.*s': %s\n", + config_lineno, (int) optlen, opt, config_msg); + config_errors = TRUE; } - if (!view->pipe) - return FALSE; + /* Always keep going if errors are encountered. */ + return OK; +} - set_nonblocking_input(TRUE); +static void +load_option_file(const char *path) +{ + FILE *file; - view->offset = 0; - view->lines = 0; - view->lineno = 0; - string_copy(view->vid, id); + /* It's ok that the file doesn't exist. */ + file = fopen(path, "r"); + if (!file) + return; - if (view->line) { - int i; + config_lineno = 0; + config_errors = FALSE; - for (i = 0; i < view->lines; i++) - if (view->line[i].data) - free(view->line[i].data); + if (read_properties(file, " \t", read_option) == ERR || + config_errors == TRUE) + fprintf(stderr, "Errors while loading %s.\n", path); +} - free(view->line); - view->line = NULL; +static int +load_options(void) +{ + char *home = getenv("HOME"); + char *tigrc_user = getenv("TIGRC_USER"); + char *tigrc_system = getenv("TIGRC_SYSTEM"); + char buf[SIZEOF_STR]; + + add_builtin_run_requests(); + + if (!tigrc_system) { + if (!string_format(buf, "%s/tigrc", SYSCONFDIR)) + return ERR; + tigrc_system = buf; } + load_option_file(tigrc_system); - view->start_time = time(NULL); + if (!tigrc_user) { + if (!home || !string_format(buf, "%s/.tigrc", home)) + return ERR; + tigrc_user = buf; + } + load_option_file(tigrc_user); - return TRUE; + return OK; } -static bool -update_view(struct view *view) -{ - char buffer[BUFSIZ]; - char *line; - struct line *tmp; - /* The number of lines to read. If too low it will cause too much - * redrawing (and possible flickering), if too high responsiveness - * will suffer. */ - unsigned long lines = view->height; - int redraw_from = -1; - if (!view->pipe) - return TRUE; +/* + * The viewer + */ - /* Only redraw if lines are visible. */ - if (view->offset + view->height >= view->lines) - redraw_from = view->lines - view->offset; +struct view; +struct view_ops; - tmp = realloc(view->line, sizeof(*view->line) * (view->lines + lines)); - if (!tmp) - goto alloc_error; +/* The display array of active views and the index of the current view. */ +static struct view *display[2]; +static unsigned int current_view; - view->line = tmp; +/* Reading from the prompt? */ +static bool input_mode = FALSE; - while ((line = fgets(buffer, sizeof(buffer), view->pipe))) { - int linelen = strlen(line); +#define foreach_displayed_view(view, i) \ + for (i = 0; i < ARRAY_SIZE(display) && (view = display[i]); i++) - struct line *prev = view->lines - ? &view->line[view->lines - 1] - : NULL; +#define displayed_views() (display[1] != NULL ? 2 : 1) - if (linelen) - line[linelen - 1] = 0; +/* Current head and commit ID */ +static char ref_blob[SIZEOF_REF] = ""; +static char ref_commit[SIZEOF_REF] = "HEAD"; +static char ref_head[SIZEOF_REF] = "HEAD"; - if (!view->ops->read(view, prev, line)) - goto alloc_error; +struct view { + const char *name; /* View name */ + const char *cmd_fmt; /* Default command line format */ + const char *cmd_env; /* Command line set via environment */ + const char *id; /* Points to either of ref_{head,commit,blob} */ - if (lines-- == 1) - break; - } + struct view_ops *ops; /* View operations */ - { - int digits; + enum keymap keymap; /* What keymap does this view have */ - lines = view->lines; - for (digits = 0; lines; digits++) - lines /= 10; + char cmd[SIZEOF_STR]; /* Command buffer */ + char ref[SIZEOF_REF]; /* Hovered commit reference */ + char vid[SIZEOF_REF]; /* View ID. Set to id member when updating. */ - /* Keep the displayed view in sync with line number scaling. */ - if (digits != view->digits) { - view->digits = digits; - redraw_from = 0; - } - } + int height, width; /* The width and height of the main window */ + WINDOW *win; /* The main window */ + WINDOW *title; /* The title window living below the main window */ - if (redraw_from >= 0) { - /* If this is an incremental update, redraw the previous line - * since for commits some members could have changed when - * loading the main view. */ - if (redraw_from > 0) - redraw_from--; + /* Navigation */ + unsigned long offset; /* Offset of the window top */ + unsigned long lineno; /* Current line number */ - /* Incrementally draw avoids flickering. */ - redraw_view_from(view, redraw_from); - } + /* Searching */ + char grep[SIZEOF_STR]; /* Search string */ + regex_t *regex; /* Pre-compiled regex */ - /* Update the title _after_ the redraw so that if the redraw picks up a - * commit reference in view->ref it'll be available here. */ - update_view_title(view); + /* If non-NULL, points to the view that opened this view. If this view + * is closed tig will switch back to the parent view. */ + struct view *parent; - if (ferror(view->pipe)) { - report("Failed to read: %s", strerror(errno)); - goto end; + /* Buffering */ + unsigned long lines; /* Total number of lines */ + struct line *line; /* Line index */ + unsigned long line_size;/* Total number of allocated lines */ + unsigned int digits; /* Number of digits in the lines member. */ - } else if (feof(view->pipe)) { - if (view == VIEW(REQ_VIEW_HELP)) { - const char *msg = TIG_HELP; - - if (view->lines == 0) { - /* Slightly ugly, but abusing view->ref keeps - * the error message. */ - string_copy(view->ref, "No help available"); - msg = "The tig(1) manpage is not installed"; - } + /* Loading */ + FILE *pipe; + time_t start_time; +}; - report("%s", msg); - goto end; - } +struct view_ops { + /* What type of content being displayed. Used in the title bar. */ + const char *type; + /* Open and reads in all view content. */ + bool (*open)(struct view *view); + /* Read one line; updates view->line. */ + bool (*read)(struct view *view, char *data); + /* Draw one line; @lineno must be < view->height. */ + bool (*draw)(struct view *view, struct line *line, unsigned int lineno, bool selected); + /* Depending on view handle a special requests. */ + enum request (*request)(struct view *view, enum request request, struct line *line); + /* Search for regex in a line. */ + bool (*grep)(struct view *view, struct line *line); + /* Select line */ + void (*select)(struct view *view, struct line *line); +}; - report(""); - goto end; - } +static struct view_ops pager_ops; +static struct view_ops main_ops; +static struct view_ops tree_ops; +static struct view_ops blob_ops; +static struct view_ops help_ops; +static struct view_ops status_ops; +static struct view_ops stage_ops; - return TRUE; +#define VIEW_STR(name, cmd, env, ref, ops, map) \ + { name, cmd, #env, ref, ops, map} -alloc_error: +#define VIEW_(id, name, ops, ref) \ + VIEW_STR(name, TIG_##id##_CMD, TIG_##id##_CMD, ref, ops, KEYMAP_##id) + + +static struct view views[] = { + VIEW_(MAIN, "main", &main_ops, ref_head), + VIEW_(DIFF, "diff", &pager_ops, ref_commit), + VIEW_(LOG, "log", &pager_ops, ref_head), + VIEW_(TREE, "tree", &tree_ops, ref_commit), + VIEW_(BLOB, "blob", &blob_ops, ref_blob), + VIEW_(HELP, "help", &help_ops, ""), + VIEW_(PAGER, "pager", &pager_ops, "stdin"), + VIEW_(STATUS, "status", &status_ops, ""), + VIEW_(STAGE, "stage", &stage_ops, ""), +}; + +#define VIEW(req) (&views[(req) - REQ_OFFSET - 1]) + +#define foreach_view(view, i) \ + for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++) + +#define view_is_displayed(view) \ + (view == display[0] || view == display[1]) + +static bool +draw_view_line(struct view *view, unsigned int lineno) +{ + struct line *line; + bool selected = (view->offset + lineno == view->lineno); + bool draw_ok; + + assert(view_is_displayed(view)); + + if (view->offset + lineno >= view->lines) + return FALSE; + + line = &view->line[view->offset + lineno]; + + if (selected) { + line->selected = TRUE; + view->ops->select(view, line); + } else if (line->selected) { + line->selected = FALSE; + wmove(view->win, lineno, 0); + wclrtoeol(view->win); + } + + scrollok(view->win, FALSE); + draw_ok = view->ops->draw(view, line, lineno, selected); + scrollok(view->win, TRUE); + + return draw_ok; +} + +static void +redraw_view_from(struct view *view, int lineno) +{ + assert(0 <= lineno && lineno < view->height); + + for (; lineno < view->height; lineno++) { + if (!draw_view_line(view, lineno)) + break; + } + + redrawwin(view->win); + if (input_mode) + wnoutrefresh(view->win); + else + wrefresh(view->win); +} + +static void +redraw_view(struct view *view) +{ + wclear(view->win); + redraw_view_from(view, 0); +} + + +static void +update_view_title(struct view *view) +{ + char buf[SIZEOF_STR]; + char state[SIZEOF_STR]; + size_t bufpos = 0, statelen = 0; + + assert(view_is_displayed(view)); + + if (view != VIEW(REQ_VIEW_STATUS) && (view->lines || view->pipe)) { + unsigned int view_lines = view->offset + view->height; + unsigned int lines = view->lines + ? MIN(view_lines, view->lines) * 100 / view->lines + : 0; + + string_format_from(state, &statelen, "- %s %d of %d (%d%%)", + view->ops->type, + view->lineno + 1, + view->lines, + lines); + + if (view->pipe) { + time_t secs = time(NULL) - view->start_time; + + /* Three git seconds are a long time ... */ + if (secs > 2) + string_format_from(state, &statelen, " %lds", secs); + } + } + + string_format_from(buf, &bufpos, "[%s]", view->name); + if (*view->ref && bufpos < view->width) { + size_t refsize = strlen(view->ref); + size_t minsize = bufpos + 1 + /* abbrev= */ 7 + 1 + statelen; + + if (minsize < view->width) + refsize = view->width - minsize + 7; + string_format_from(buf, &bufpos, " %.*s", (int) refsize, view->ref); + } + + if (statelen && bufpos < view->width) { + string_format_from(buf, &bufpos, " %s", state); + } + + if (view == display[current_view]) + wbkgdset(view->title, get_line_attr(LINE_TITLE_FOCUS)); + else + wbkgdset(view->title, get_line_attr(LINE_TITLE_BLUR)); + + mvwaddnstr(view->title, 0, 0, buf, bufpos); + wclrtoeol(view->title); + wmove(view->title, 0, view->width - 1); + + if (input_mode) + wnoutrefresh(view->title); + else + wrefresh(view->title); +} + +static void +resize_display(void) +{ + int offset, i; + struct view *base = display[0]; + struct view *view = display[1] ? display[1] : display[0]; + + /* Setup window dimensions */ + + getmaxyx(stdscr, base->height, base->width); + + /* Make room for the status window. */ + base->height -= 1; + + if (view != base) { + /* Horizontal split. */ + view->width = base->width; + view->height = SCALE_SPLIT_VIEW(base->height); + base->height -= view->height; + + /* Make room for the title bar. */ + view->height -= 1; + } + + /* Make room for the title bar. */ + base->height -= 1; + + offset = 0; + + foreach_displayed_view (view, i) { + if (!view->win) { + view->win = newwin(view->height, 0, offset, 0); + if (!view->win) + die("Failed to create %s view", view->name); + + scrollok(view->win, TRUE); + + view->title = newwin(1, 0, offset + view->height, 0); + if (!view->title) + die("Failed to create title window"); + + } else { + wresize(view->win, view->height, view->width); + mvwin(view->win, offset, 0); + mvwin(view->title, offset + view->height, 0); + } + + offset += view->height + 1; + } +} + +static void +redraw_display(void) +{ + struct view *view; + int i; + + foreach_displayed_view (view, i) { + redraw_view(view); + update_view_title(view); + } +} + +static void +update_display_cursor(struct view *view) +{ + /* Move the cursor to the right-most column of the cursor line. + * + * XXX: This could turn out to be a bit expensive, but it ensures that + * the cursor does not jump around. */ + if (view->lines) { + wmove(view->win, view->lineno - view->offset, view->width - 1); + wrefresh(view->win); + } +} + +/* + * Navigation + */ + +/* Scrolling backend */ +static void +do_scroll_view(struct view *view, int lines) +{ + bool redraw_current_line = FALSE; + + /* The rendering expects the new offset. */ + view->offset += lines; + + assert(0 <= view->offset && view->offset < view->lines); + assert(lines); + + /* Move current line into the view. */ + if (view->lineno < view->offset) { + view->lineno = view->offset; + redraw_current_line = TRUE; + } else if (view->lineno >= view->offset + view->height) { + view->lineno = view->offset + view->height - 1; + redraw_current_line = TRUE; + } + + assert(view->offset <= view->lineno && view->lineno < view->lines); + + /* Redraw the whole screen if scrolling is pointless. */ + if (view->height < ABS(lines)) { + redraw_view(view); + + } else { + int line = lines > 0 ? view->height - lines : 0; + int end = line + ABS(lines); + + wscrl(view->win, lines); + + for (; line < end; line++) { + if (!draw_view_line(view, line)) + break; + } + + if (redraw_current_line) + draw_view_line(view, view->lineno - view->offset); + } + + redrawwin(view->win); + wrefresh(view->win); + report(""); +} + +/* Scroll frontend */ +static void +scroll_view(struct view *view, enum request request) +{ + int lines = 1; + + assert(view_is_displayed(view)); + + switch (request) { + case REQ_SCROLL_PAGE_DOWN: + lines = view->height; + case REQ_SCROLL_LINE_DOWN: + if (view->offset + lines > view->lines) + lines = view->lines - view->offset; + + if (lines == 0 || view->offset + view->height >= view->lines) { + report("Cannot scroll beyond the last line"); + return; + } + break; + + case REQ_SCROLL_PAGE_UP: + lines = view->height; + case REQ_SCROLL_LINE_UP: + if (lines > view->offset) + lines = view->offset; + + if (lines == 0) { + report("Cannot scroll beyond the first line"); + return; + } + + lines = -lines; + break; + + default: + die("request %d not handled in switch", request); + } + + do_scroll_view(view, lines); +} + +/* Cursor moving */ +static void +move_view(struct view *view, enum request request) +{ + int scroll_steps = 0; + int steps; + + switch (request) { + case REQ_MOVE_FIRST_LINE: + steps = -view->lineno; + break; + + case REQ_MOVE_LAST_LINE: + steps = view->lines - view->lineno - 1; + break; + + case REQ_MOVE_PAGE_UP: + steps = view->height > view->lineno + ? -view->lineno : -view->height; + break; + + case REQ_MOVE_PAGE_DOWN: + steps = view->lineno + view->height >= view->lines + ? view->lines - view->lineno - 1 : view->height; + break; + + case REQ_MOVE_UP: + steps = -1; + break; + + case REQ_MOVE_DOWN: + steps = 1; + break; + + default: + die("request %d not handled in switch", request); + } + + if (steps <= 0 && view->lineno == 0) { + report("Cannot move beyond the first line"); + return; + + } else if (steps >= 0 && view->lineno + 1 >= view->lines) { + report("Cannot move beyond the last line"); + return; + } + + /* Move the current line */ + view->lineno += steps; + assert(0 <= view->lineno && view->lineno < view->lines); + + /* Check whether the view needs to be scrolled */ + if (view->lineno < view->offset || + view->lineno >= view->offset + view->height) { + scroll_steps = steps; + if (steps < 0 && -steps > view->offset) { + scroll_steps = -view->offset; + + } else if (steps > 0) { + if (view->lineno == view->lines - 1 && + view->lines > view->height) { + scroll_steps = view->lines - view->offset - 1; + if (scroll_steps >= view->height) + scroll_steps -= view->height - 1; + } + } + } + + if (!view_is_displayed(view)) { + view->offset += scroll_steps; + assert(0 <= view->offset && view->offset < view->lines); + view->ops->select(view, &view->line[view->lineno]); + return; + } + + /* Repaint the old "current" line if we be scrolling */ + if (ABS(steps) < view->height) + draw_view_line(view, view->lineno - steps - view->offset); + + if (scroll_steps) { + do_scroll_view(view, scroll_steps); + return; + } + + /* Draw the current line */ + draw_view_line(view, view->lineno - view->offset); + + redrawwin(view->win); + wrefresh(view->win); + report(""); +} + + +/* + * Searching + */ + +static void search_view(struct view *view, enum request request); + +static bool +find_next_line(struct view *view, unsigned long lineno, struct line *line) +{ + assert(view_is_displayed(view)); + + if (!view->ops->grep(view, line)) + return FALSE; + + if (lineno - view->offset >= view->height) { + view->offset = lineno; + view->lineno = lineno; + redraw_view(view); + + } else { + unsigned long old_lineno = view->lineno - view->offset; + + view->lineno = lineno; + draw_view_line(view, old_lineno); + + draw_view_line(view, view->lineno - view->offset); + redrawwin(view->win); + wrefresh(view->win); + } + + report("Line %ld matches '%s'", lineno + 1, view->grep); + return TRUE; +} + +static void +find_next(struct view *view, enum request request) +{ + unsigned long lineno = view->lineno; + int direction; + + if (!*view->grep) { + if (!*opt_search) + report("No previous search"); + else + search_view(view, request); + return; + } + + switch (request) { + case REQ_SEARCH: + case REQ_FIND_NEXT: + direction = 1; + break; + + case REQ_SEARCH_BACK: + case REQ_FIND_PREV: + direction = -1; + break; + + default: + return; + } + + if (request == REQ_FIND_NEXT || request == REQ_FIND_PREV) + lineno += direction; + + /* Note, lineno is unsigned long so will wrap around in which case it + * will become bigger than view->lines. */ + for (; lineno < view->lines; lineno += direction) { + struct line *line = &view->line[lineno]; + + if (find_next_line(view, lineno, line)) + return; + } + + report("No match found for '%s'", view->grep); +} + +static void +search_view(struct view *view, enum request request) +{ + int regex_err; + + if (view->regex) { + regfree(view->regex); + *view->grep = 0; + } else { + view->regex = calloc(1, sizeof(*view->regex)); + if (!view->regex) + return; + } + + regex_err = regcomp(view->regex, opt_search, REG_EXTENDED); + if (regex_err != 0) { + char buf[SIZEOF_STR] = "unknown error"; + + regerror(regex_err, view->regex, buf, sizeof(buf)); + report("Search failed: %s", buf); + return; + } + + string_copy(view->grep, opt_search); + + find_next(view, request); +} + +/* + * Incremental updating + */ + +static void +end_update(struct view *view) +{ + if (!view->pipe) + return; + set_nonblocking_input(FALSE); + if (view->pipe == stdin) + fclose(view->pipe); + else + pclose(view->pipe); + view->pipe = NULL; +} + +static bool +begin_update(struct view *view) +{ + if (view->pipe) + end_update(view); + + if (opt_cmd[0]) { + string_copy(view->cmd, opt_cmd); + opt_cmd[0] = 0; + /* When running random commands, initially show the + * command in the title. However, it maybe later be + * overwritten if a commit line is selected. */ + if (view == VIEW(REQ_VIEW_PAGER)) + string_copy(view->ref, view->cmd); + else + view->ref[0] = 0; + + } else if (view == VIEW(REQ_VIEW_TREE)) { + const char *format = view->cmd_env ? view->cmd_env : view->cmd_fmt; + char path[SIZEOF_STR]; + + if (strcmp(view->vid, view->id)) + opt_path[0] = path[0] = 0; + else if (sq_quote(path, 0, opt_path) >= sizeof(path)) + return FALSE; + + if (!string_format(view->cmd, format, view->id, path)) + return FALSE; + + } else { + const char *format = view->cmd_env ? view->cmd_env : view->cmd_fmt; + const char *id = view->id; + + if (!string_format(view->cmd, format, id, id, id, id, id)) + return FALSE; + + /* Put the current ref_* value to the view title ref + * member. This is needed by the blob view. Most other + * views sets it automatically after loading because the + * first line is a commit line. */ + string_copy_rev(view->ref, view->id); + } + + /* Special case for the pager view. */ + if (opt_pipe) { + view->pipe = opt_pipe; + opt_pipe = NULL; + } else { + view->pipe = popen(view->cmd, "r"); + } + + if (!view->pipe) + return FALSE; + + set_nonblocking_input(TRUE); + + view->offset = 0; + view->lines = 0; + view->lineno = 0; + string_copy_rev(view->vid, view->id); + + if (view->line) { + int i; + + for (i = 0; i < view->lines; i++) + if (view->line[i].data) + free(view->line[i].data); + + free(view->line); + view->line = NULL; + } + + view->start_time = time(NULL); + + return TRUE; +} + +static struct line * +realloc_lines(struct view *view, size_t line_size) +{ + struct line *tmp = realloc(view->line, sizeof(*view->line) * line_size); + + if (!tmp) + return NULL; + + view->line = tmp; + view->line_size = line_size; + return view->line; +} + +static bool +update_view(struct view *view) +{ + char in_buffer[BUFSIZ]; + char out_buffer[BUFSIZ * 2]; + char *line; + /* The number of lines to read. If too low it will cause too much + * redrawing (and possible flickering), if too high responsiveness + * will suffer. */ + unsigned long lines = view->height; + int redraw_from = -1; + + if (!view->pipe) + return TRUE; + + /* Only redraw if lines are visible. */ + if (view->offset + view->height >= view->lines) + redraw_from = view->lines - view->offset; + + /* FIXME: This is probably not perfect for backgrounded views. */ + if (!realloc_lines(view, view->lines + lines)) + goto alloc_error; + + while ((line = fgets(in_buffer, sizeof(in_buffer), view->pipe))) { + size_t linelen = strlen(line); + + if (linelen) + line[linelen - 1] = 0; + + if (opt_iconv != ICONV_NONE) { + ICONV_CONST char *inbuf = line; + size_t inlen = linelen; + + char *outbuf = out_buffer; + size_t outlen = sizeof(out_buffer); + + size_t ret; + + ret = iconv(opt_iconv, &inbuf, &inlen, &outbuf, &outlen); + if (ret != (size_t) -1) { + line = out_buffer; + linelen = strlen(out_buffer); + } + } + + if (!view->ops->read(view, line)) + goto alloc_error; + + if (lines-- == 1) + break; + } + + { + int digits; + + lines = view->lines; + for (digits = 0; lines; digits++) + lines /= 10; + + /* Keep the displayed view in sync with line number scaling. */ + if (digits != view->digits) { + view->digits = digits; + redraw_from = 0; + } + } + + if (!view_is_displayed(view)) + goto check_pipe; + + if (view == VIEW(REQ_VIEW_TREE)) { + /* Clear the view and redraw everything since the tree sorting + * might have rearranged things. */ + redraw_view(view); + + } else if (redraw_from >= 0) { + /* If this is an incremental update, redraw the previous line + * since for commits some members could have changed when + * loading the main view. */ + if (redraw_from > 0) + redraw_from--; + + /* Since revision graph visualization requires knowledge + * about the parent commit, it causes a further one-off + * needed to be redrawn for incremental updates. */ + if (redraw_from > 0 && opt_rev_graph) + redraw_from--; + + /* Incrementally draw avoids flickering. */ + redraw_view_from(view, redraw_from); + } + + /* Update the title _after_ the redraw so that if the redraw picks up a + * commit reference in view->ref it'll be available here. */ + update_view_title(view); + +check_pipe: + if (ferror(view->pipe)) { + report("Failed to read: %s", strerror(errno)); + goto end; + + } else if (feof(view->pipe)) { + report(""); + goto end; + } + + return TRUE; + +alloc_error: report("Allocation failure"); -end: - end_update(view); - return FALSE; +end: + view->ops->read(view, NULL); + end_update(view); + return FALSE; +} + +static struct line * +add_line_data(struct view *view, void *data, enum line_type type) +{ + struct line *line = &view->line[view->lines++]; + + memset(line, 0, sizeof(*line)); + line->type = type; + line->data = data; + + return line; +} + +static struct line * +add_line_text(struct view *view, char *data, enum line_type type) +{ + if (data) + data = strdup(data); + + return data ? add_line_data(view, data, type) : NULL; +} + + +/* + * View opening + */ + +enum open_flags { + OPEN_DEFAULT = 0, /* Use default view switching. */ + OPEN_SPLIT = 1, /* Split current view. */ + OPEN_BACKGROUNDED = 2, /* Backgrounded. */ + OPEN_RELOAD = 4, /* Reload view even if it is the current. */ +}; + +static void +open_view(struct view *prev, enum request request, enum open_flags flags) +{ + bool backgrounded = !!(flags & OPEN_BACKGROUNDED); + bool split = !!(flags & OPEN_SPLIT); + bool reload = !!(flags & OPEN_RELOAD); + struct view *view = VIEW(request); + int nviews = displayed_views(); + struct view *base_view = display[0]; + + if (view == prev && nviews == 1 && !reload) { + report("Already in %s view", view->name); + return; + } + + if (view->ops->open) { + if (!view->ops->open(view)) { + report("Failed to load %s view", view->name); + return; + } + + } else if ((reload || strcmp(view->vid, view->id)) && + !begin_update(view)) { + report("Failed to load %s view", view->name); + return; + } + + if (split) { + display[1] = view; + if (!backgrounded) + current_view = 1; + } else { + /* Maximize the current view. */ + memset(display, 0, sizeof(display)); + current_view = 0; + display[current_view] = view; + } + + /* Resize the view when switching between split- and full-screen, + * or when switching between two different full-screen views. */ + if (nviews != displayed_views() || + (nviews == 1 && base_view != display[0])) + resize_display(); + + if (split && prev->lineno - prev->offset >= prev->height) { + /* Take the title line into account. */ + int lines = prev->lineno - prev->offset - prev->height + 1; + + /* Scroll the view that was split if the current line is + * outside the new limited view. */ + do_scroll_view(prev, lines); + } + + if (prev && view != prev) { + if (split && !backgrounded) { + /* "Blur" the previous view. */ + update_view_title(prev); + } + + view->parent = prev; + } + + if (view->pipe && view->lines == 0) { + /* Clear the old view and let the incremental updating refill + * the screen. */ + wclear(view->win); + report(""); + } else { + redraw_view(view); + report(""); + } + + /* If the view is backgrounded the above calls to report() + * won't redraw the view title. */ + if (backgrounded) + update_view_title(view); +} + +static void +open_external_viewer(const char *cmd) +{ + def_prog_mode(); /* save current tty modes */ + endwin(); /* restore original tty modes */ + system(cmd); + fprintf(stderr, "Press Enter to continue"); + getc(stdin); + reset_prog_mode(); + redraw_display(); +} + +static void +open_mergetool(const char *file) +{ + char cmd[SIZEOF_STR]; + char file_sq[SIZEOF_STR]; + + if (sq_quote(file_sq, 0, file) < sizeof(file_sq) && + string_format(cmd, "git mergetool %s", file_sq)) { + open_external_viewer(cmd); + } +} + +static void +open_editor(bool from_root, const char *file) +{ + char cmd[SIZEOF_STR]; + char file_sq[SIZEOF_STR]; + char *editor; + char *prefix = from_root ? opt_cdup : ""; + + editor = getenv("GIT_EDITOR"); + if (!editor && *opt_editor) + editor = opt_editor; + if (!editor) + editor = getenv("VISUAL"); + if (!editor) + editor = getenv("EDITOR"); + if (!editor) + editor = "vi"; + + if (sq_quote(file_sq, 0, file) < sizeof(file_sq) && + string_format(cmd, "%s %s%s", editor, prefix, file_sq)) { + open_external_viewer(cmd); + } +} + +static void +open_run_request(enum request request) +{ + struct run_request *req = get_run_request(request); + char buf[SIZEOF_STR * 2]; + size_t bufpos; + char *cmd; + + if (!req) { + report("Unknown run request"); + return; + } + + bufpos = 0; + cmd = req->cmd; + + while (cmd) { + char *next = strstr(cmd, "%("); + int len = next - cmd; + char *value; + + if (!next) { + len = strlen(cmd); + value = ""; + + } else if (!strncmp(next, "%(head)", 7)) { + value = ref_head; + + } else if (!strncmp(next, "%(commit)", 9)) { + value = ref_commit; + + } else if (!strncmp(next, "%(blob)", 7)) { + value = ref_blob; + + } else { + report("Unknown replacement in run request: `%s`", req->cmd); + return; + } + + if (!string_format_from(buf, &bufpos, "%.*s%s", len, cmd, value)) + return; + + if (next) + next = strchr(next, ')') + 1; + cmd = next; + } + + open_external_viewer(buf); +} + +/* + * User request switch noodle + */ + +static int +view_driver(struct view *view, enum request request) +{ + int i; + + if (request == REQ_NONE) { + doupdate(); + return TRUE; + } + + if (request > REQ_NONE) { + open_run_request(request); + return TRUE; + } + + if (view && view->lines) { + request = view->ops->request(view, request, &view->line[view->lineno]); + if (request == REQ_NONE) + return TRUE; + } + + switch (request) { + case REQ_MOVE_UP: + case REQ_MOVE_DOWN: + case REQ_MOVE_PAGE_UP: + case REQ_MOVE_PAGE_DOWN: + case REQ_MOVE_FIRST_LINE: + case REQ_MOVE_LAST_LINE: + move_view(view, request); + break; + + case REQ_SCROLL_LINE_DOWN: + case REQ_SCROLL_LINE_UP: + case REQ_SCROLL_PAGE_DOWN: + case REQ_SCROLL_PAGE_UP: + scroll_view(view, request); + break; + + case REQ_VIEW_BLOB: + if (!ref_blob[0]) { + report("No file chosen, press %s to open tree view", + get_key(REQ_VIEW_TREE)); + break; + } + open_view(view, request, OPEN_DEFAULT); + break; + + case REQ_VIEW_PAGER: + if (!opt_pipe && !VIEW(REQ_VIEW_PAGER)->lines) { + report("No pager content, press %s to run command from prompt", + get_key(REQ_PROMPT)); + break; + } + open_view(view, request, OPEN_DEFAULT); + break; + + case REQ_VIEW_STAGE: + if (!VIEW(REQ_VIEW_STAGE)->lines) { + report("No stage content, press %s to open the status view and choose file", + get_key(REQ_VIEW_STATUS)); + break; + } + open_view(view, request, OPEN_DEFAULT); + break; + + case REQ_VIEW_STATUS: + if (opt_is_inside_work_tree == FALSE) { + report("The status view requires a working tree"); + break; + } + open_view(view, request, OPEN_DEFAULT); + break; + + case REQ_VIEW_MAIN: + case REQ_VIEW_DIFF: + case REQ_VIEW_LOG: + case REQ_VIEW_TREE: + case REQ_VIEW_HELP: + open_view(view, request, OPEN_DEFAULT); + break; + + case REQ_NEXT: + case REQ_PREVIOUS: + request = request == REQ_NEXT ? REQ_MOVE_DOWN : REQ_MOVE_UP; + + if ((view == VIEW(REQ_VIEW_DIFF) && + view->parent == VIEW(REQ_VIEW_MAIN)) || + (view == VIEW(REQ_VIEW_STAGE) && + view->parent == VIEW(REQ_VIEW_STATUS)) || + (view == VIEW(REQ_VIEW_BLOB) && + view->parent == VIEW(REQ_VIEW_TREE))) { + int line; + + view = view->parent; + line = view->lineno; + move_view(view, request); + if (view_is_displayed(view)) + update_view_title(view); + if (line != view->lineno) + view->ops->request(view, REQ_ENTER, + &view->line[view->lineno]); + + } else { + move_view(view, request); + } + break; + + case REQ_VIEW_NEXT: + { + int nviews = displayed_views(); + int next_view = (current_view + 1) % nviews; + + if (next_view == current_view) { + report("Only one view is displayed"); + break; + } + + current_view = next_view; + /* Blur out the title of the previous view. */ + update_view_title(view); + report(""); + break; + } + case REQ_REFRESH: + report("Refreshing is not yet supported for the %s view", view->name); + break; + + case REQ_TOGGLE_LINENO: + opt_line_number = !opt_line_number; + redraw_display(); + break; + + case REQ_TOGGLE_REV_GRAPH: + opt_rev_graph = !opt_rev_graph; + redraw_display(); + break; + + case REQ_PROMPT: + /* Always reload^Wrerun commands from the prompt. */ + open_view(view, opt_request, OPEN_RELOAD); + break; + + case REQ_SEARCH: + case REQ_SEARCH_BACK: + search_view(view, request); + break; + + case REQ_FIND_NEXT: + case REQ_FIND_PREV: + find_next(view, request); + break; + + case REQ_STOP_LOADING: + for (i = 0; i < ARRAY_SIZE(views); i++) { + view = &views[i]; + if (view->pipe) + report("Stopped loading the %s view", view->name), + end_update(view); + } + break; + + case REQ_SHOW_VERSION: + report("tig-%s (built %s)", TIG_VERSION, __DATE__); + return TRUE; + + case REQ_SCREEN_RESIZE: + resize_display(); + /* Fall-through */ + case REQ_SCREEN_REDRAW: + redraw_display(); + break; + + case REQ_EDIT: + report("Nothing to edit"); + break; + + + case REQ_ENTER: + report("Nothing to enter"); + break; + + + case REQ_VIEW_CLOSE: + /* XXX: Mark closed views by letting view->parent point to the + * view itself. Parents to closed view should never be + * followed. */ + if (view->parent && + view->parent->parent != view->parent) { + memset(display, 0, sizeof(display)); + current_view = 0; + display[current_view] = view->parent; + view->parent = view; + resize_display(); + redraw_display(); + break; + } + /* Fall-through */ + case REQ_QUIT: + return FALSE; + + default: + /* An unknown key will show most commonly used commands. */ + report("Unknown key, press 'h' for help"); + return TRUE; + } + + return TRUE; +} + + +/* + * Pager backend + */ + +static bool +pager_draw(struct view *view, struct line *line, unsigned int lineno, bool selected) +{ + char *text = line->data; + enum line_type type = line->type; + int textlen = strlen(text); + int attr; + + wmove(view->win, lineno, 0); + + if (selected) { + type = LINE_CURSOR; + wchgat(view->win, -1, 0, type, NULL); + } + + attr = get_line_attr(type); + wattrset(view->win, attr); + + if (opt_line_number || opt_tab_size < TABSIZE) { + static char spaces[] = " "; + int col_offset = 0, col = 0; + + if (opt_line_number) { + unsigned long real_lineno = view->offset + lineno + 1; + + if (real_lineno == 1 || + (real_lineno % opt_num_interval) == 0) { + wprintw(view->win, "%.*d", view->digits, real_lineno); + + } else { + waddnstr(view->win, spaces, + MIN(view->digits, STRING_SIZE(spaces))); + } + waddstr(view->win, ": "); + col_offset = view->digits + 2; + } + + while (text && col_offset + col < view->width) { + int cols_max = view->width - col_offset - col; + char *pos = text; + int cols; + + if (*text == '\t') { + text++; + assert(sizeof(spaces) > TABSIZE); + pos = spaces; + cols = opt_tab_size - (col % opt_tab_size); + + } else { + text = strchr(text, '\t'); + cols = line ? text - pos : strlen(pos); + } + + waddnstr(view->win, pos, MIN(cols, cols_max)); + col += cols; + } + + } else { + int col = 0, pos = 0; + + for (; pos < textlen && col < view->width; pos++, col++) + if (text[pos] == '\t') + col += TABSIZE - (col % TABSIZE) - 1; + + waddnstr(view->win, text, pos); + } + + return TRUE; +} + +static bool +add_describe_ref(char *buf, size_t *bufpos, char *commit_id, const char *sep) +{ + char refbuf[SIZEOF_STR]; + char *ref = NULL; + FILE *pipe; + + if (!string_format(refbuf, "git describe %s 2>/dev/null", commit_id)) + return TRUE; + + pipe = popen(refbuf, "r"); + if (!pipe) + return TRUE; + + if ((ref = fgets(refbuf, sizeof(refbuf), pipe))) + ref = chomp_string(ref); + pclose(pipe); + + if (!ref || !*ref) + return TRUE; + + /* This is the only fatal call, since it can "corrupt" the buffer. */ + if (!string_nformat(buf, SIZEOF_STR, bufpos, "%s%s", sep, ref)) + return FALSE; + + return TRUE; +} + +static void +add_pager_refs(struct view *view, struct line *line) +{ + char buf[SIZEOF_STR]; + char *commit_id = line->data + STRING_SIZE("commit "); + struct ref **refs; + size_t bufpos = 0, refpos = 0; + const char *sep = "Refs: "; + bool is_tag = FALSE; + + assert(line->type == LINE_COMMIT); + + refs = get_refs(commit_id); + if (!refs) { + if (view == VIEW(REQ_VIEW_DIFF)) + goto try_add_describe_ref; + return; + } + + do { + struct ref *ref = refs[refpos]; + char *fmt = ref->tag ? "%s[%s]" : + ref->remote ? "%s<%s>" : "%s%s"; + + if (!string_format_from(buf, &bufpos, fmt, sep, ref->name)) + return; + sep = ", "; + if (ref->tag) + is_tag = TRUE; + } while (refs[refpos++]->next); + + if (!is_tag && view == VIEW(REQ_VIEW_DIFF)) { +try_add_describe_ref: + /* Add -g "fake" reference. */ + if (!add_describe_ref(buf, &bufpos, commit_id, sep)) + return; + } + + if (bufpos == 0) + return; + + if (!realloc_lines(view, view->line_size + 1)) + return; + + add_line_text(view, buf, LINE_PP_REFS); +} + +static bool +pager_read(struct view *view, char *data) +{ + struct line *line; + + if (!data) + return TRUE; + + line = add_line_text(view, data, get_line_type(data)); + if (!line) + return FALSE; + + if (line->type == LINE_COMMIT && + (view == VIEW(REQ_VIEW_DIFF) || + view == VIEW(REQ_VIEW_LOG))) + add_pager_refs(view, line); + + return TRUE; +} + +static enum request +pager_request(struct view *view, enum request request, struct line *line) +{ + int split = 0; + + if (request != REQ_ENTER) + return request; + + if (line->type == LINE_COMMIT && + (view == VIEW(REQ_VIEW_LOG) || + view == VIEW(REQ_VIEW_PAGER))) { + open_view(view, REQ_VIEW_DIFF, OPEN_SPLIT); + split = 1; + } + + /* Always scroll the view even if it was split. That way + * you can use Enter to scroll through the log view and + * split open each commit diff. */ + scroll_view(view, REQ_SCROLL_LINE_DOWN); + + /* FIXME: A minor workaround. Scrolling the view will call report("") + * but if we are scrolling a non-current view this won't properly + * update the view title. */ + if (split) + update_view_title(view); + + return REQ_NONE; +} + +static bool +pager_grep(struct view *view, struct line *line) +{ + regmatch_t pmatch; + char *text = line->data; + + if (!*text) + return FALSE; + + if (regexec(view->regex, text, 1, &pmatch, 0) == REG_NOMATCH) + return FALSE; + + return TRUE; +} + +static void +pager_select(struct view *view, struct line *line) +{ + if (line->type == LINE_COMMIT) { + char *text = line->data + STRING_SIZE("commit "); + + if (view != VIEW(REQ_VIEW_PAGER)) + string_copy_rev(view->ref, text); + string_copy_rev(ref_commit, text); + } +} + +static struct view_ops pager_ops = { + "line", + NULL, + pager_read, + pager_draw, + pager_request, + pager_grep, + pager_select, +}; + + +/* + * Help backend + */ + +static bool +help_open(struct view *view) +{ + char buf[BUFSIZ]; + int lines = ARRAY_SIZE(req_info) + 2; + int i; + + if (view->lines > 0) + return TRUE; + + for (i = 0; i < ARRAY_SIZE(req_info); i++) + if (!req_info[i].request) + lines++; + + lines += run_requests + 1; + + view->line = calloc(lines, sizeof(*view->line)); + if (!view->line) + return FALSE; + + add_line_text(view, "Quick reference for tig keybindings:", LINE_DEFAULT); + + for (i = 0; i < ARRAY_SIZE(req_info); i++) { + char *key; + + if (req_info[i].request == REQ_NONE) + continue; + + if (!req_info[i].request) { + add_line_text(view, "", LINE_DEFAULT); + add_line_text(view, req_info[i].help, LINE_DEFAULT); + continue; + } + + key = get_key(req_info[i].request); + if (!*key) + key = "(no key defined)"; + + if (!string_format(buf, " %-25s %s", key, req_info[i].help)) + continue; + + add_line_text(view, buf, LINE_DEFAULT); + } + + if (run_requests) { + add_line_text(view, "", LINE_DEFAULT); + add_line_text(view, "External commands:", LINE_DEFAULT); + } + + for (i = 0; i < run_requests; i++) { + struct run_request *req = get_run_request(REQ_NONE + i + 1); + char *key; + + if (!req) + continue; + + key = get_key_name(req->key); + if (!*key) + key = "(no key defined)"; + + if (!string_format(buf, " %-10s %-14s `%s`", + keymap_table[req->keymap].name, + key, req->cmd)) + continue; + + add_line_text(view, buf, LINE_DEFAULT); + } + + return TRUE; +} + +static struct view_ops help_ops = { + "line", + help_open, + NULL, + pager_draw, + pager_request, + pager_grep, + pager_select, +}; + + +/* + * Tree backend + */ + +struct tree_stack_entry { + struct tree_stack_entry *prev; /* Entry below this in the stack */ + unsigned long lineno; /* Line number to restore */ + char *name; /* Position of name in opt_path */ +}; + +/* The top of the path stack. */ +static struct tree_stack_entry *tree_stack = NULL; +unsigned long tree_lineno = 0; + +static void +pop_tree_stack_entry(void) +{ + struct tree_stack_entry *entry = tree_stack; + + tree_lineno = entry->lineno; + entry->name[0] = 0; + tree_stack = entry->prev; + free(entry); +} + +static void +push_tree_stack_entry(char *name, unsigned long lineno) +{ + struct tree_stack_entry *entry = calloc(1, sizeof(*entry)); + size_t pathlen = strlen(opt_path); + + if (!entry) + return; + + entry->prev = tree_stack; + entry->name = opt_path + pathlen; + tree_stack = entry; + + if (!string_format_from(opt_path, &pathlen, "%s/", name)) { + pop_tree_stack_entry(); + return; + } + + /* Move the current line to the first tree entry. */ + tree_lineno = 1; + entry->lineno = lineno; +} + +/* Parse output from git-ls-tree(1): + * + * 100644 blob fb0e31ea6cc679b7379631188190e975f5789c26 Makefile + * 100644 blob 5304ca4260aaddaee6498f9630e7d471b8591ea6 README + * 100644 blob f931e1d229c3e185caad4449bf5b66ed72462657 tig.c + * 100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38 web.conf + */ + +#define SIZEOF_TREE_ATTR \ + STRING_SIZE("100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38\t") + +#define TREE_UP_FORMAT "040000 tree %s\t.." + +static int +tree_compare_entry(enum line_type type1, char *name1, + enum line_type type2, char *name2) +{ + if (type1 != type2) { + if (type1 == LINE_TREE_DIR) + return -1; + return 1; + } + + return strcmp(name1, name2); +} + +static bool +tree_read(struct view *view, char *text) +{ + size_t textlen = text ? strlen(text) : 0; + char buf[SIZEOF_STR]; + unsigned long pos; + enum line_type type; + bool first_read = view->lines == 0; + + if (textlen <= SIZEOF_TREE_ATTR) + return FALSE; + + type = text[STRING_SIZE("100644 ")] == 't' + ? LINE_TREE_DIR : LINE_TREE_FILE; + + if (first_read) { + /* Add path info line */ + if (!string_format(buf, "Directory path /%s", opt_path) || + !realloc_lines(view, view->line_size + 1) || + !add_line_text(view, buf, LINE_DEFAULT)) + return FALSE; + + /* Insert "link" to parent directory. */ + if (*opt_path) { + if (!string_format(buf, TREE_UP_FORMAT, view->ref) || + !realloc_lines(view, view->line_size + 1) || + !add_line_text(view, buf, LINE_TREE_DIR)) + return FALSE; + } + } + + /* Strip the path part ... */ + if (*opt_path) { + size_t pathlen = textlen - SIZEOF_TREE_ATTR; + size_t striplen = strlen(opt_path); + char *path = text + SIZEOF_TREE_ATTR; + + if (pathlen > striplen) + memmove(path, path + striplen, + pathlen - striplen + 1); + } + + /* Skip "Directory ..." and ".." line. */ + for (pos = 1 + !!*opt_path; pos < view->lines; pos++) { + struct line *line = &view->line[pos]; + char *path1 = ((char *) line->data) + SIZEOF_TREE_ATTR; + char *path2 = text + SIZEOF_TREE_ATTR; + int cmp = tree_compare_entry(line->type, path1, type, path2); + + if (cmp <= 0) + continue; + + text = strdup(text); + if (!text) + return FALSE; + + if (view->lines > pos) + memmove(&view->line[pos + 1], &view->line[pos], + (view->lines - pos) * sizeof(*line)); + + line = &view->line[pos]; + line->data = text; + line->type = type; + view->lines++; + return TRUE; + } + + if (!add_line_text(view, text, type)) + return FALSE; + + if (tree_lineno > view->lineno) { + view->lineno = tree_lineno; + tree_lineno = 0; + } + + return TRUE; +} + +static enum request +tree_request(struct view *view, enum request request, struct line *line) +{ + enum open_flags flags; + + if (request == REQ_TREE_PARENT) { + if (*opt_path) { + /* fake 'cd ..' */ + request = REQ_ENTER; + line = &view->line[1]; + } else { + /* quit view if at top of tree */ + return REQ_VIEW_CLOSE; + } + } + if (request != REQ_ENTER) + return request; + + /* Cleanup the stack if the tree view is at a different tree. */ + while (!*opt_path && tree_stack) + pop_tree_stack_entry(); + + switch (line->type) { + case LINE_TREE_DIR: + /* Depending on whether it is a subdir or parent (updir?) link + * mangle the path buffer. */ + if (line == &view->line[1] && *opt_path) { + pop_tree_stack_entry(); + + } else { + char *data = line->data; + char *basename = data + SIZEOF_TREE_ATTR; + + push_tree_stack_entry(basename, view->lineno); + } + + /* Trees and subtrees share the same ID, so they are not not + * unique like blobs. */ + flags = OPEN_RELOAD; + request = REQ_VIEW_TREE; + break; + + case LINE_TREE_FILE: + flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT; + request = REQ_VIEW_BLOB; + break; + + default: + return TRUE; + } + + open_view(view, request, flags); + if (request == REQ_VIEW_TREE) { + view->lineno = tree_lineno; + } + + return REQ_NONE; +} + +static void +tree_select(struct view *view, struct line *line) +{ + char *text = line->data + STRING_SIZE("100644 blob "); + + if (line->type == LINE_TREE_FILE) { + string_copy_rev(ref_blob, text); + + } else if (line->type != LINE_TREE_DIR) { + return; + } + + string_copy_rev(view->ref, text); +} + +static struct view_ops tree_ops = { + "file", + NULL, + tree_read, + pager_draw, + tree_request, + pager_grep, + tree_select, +}; + +static bool +blob_read(struct view *view, char *line) +{ + return add_line_text(view, line, LINE_DEFAULT) != NULL; +} + +static struct view_ops blob_ops = { + "line", + NULL, + blob_read, + pager_draw, + pager_request, + pager_grep, + pager_select, +}; + + +/* + * Status backend + */ + +struct status { + char status; + struct { + mode_t mode; + char rev[SIZEOF_REV]; + char name[SIZEOF_STR]; + } old; + struct { + mode_t mode; + char rev[SIZEOF_REV]; + char name[SIZEOF_STR]; + } new; +}; + +static struct status stage_status; +static enum line_type stage_line_type; + +/* Get fields from the diff line: + * :100644 100644 06a5d6ae9eca55be2e0e585a152e6b1336f2b20e 0000000000000000000000000000000000000000 M + */ +static inline bool +status_get_diff(struct status *file, char *buf, size_t bufsize) +{ + char *old_mode = buf + 1; + char *new_mode = buf + 8; + char *old_rev = buf + 15; + char *new_rev = buf + 56; + char *status = buf + 97; + + if (bufsize < 99 || + old_mode[-1] != ':' || + new_mode[-1] != ' ' || + old_rev[-1] != ' ' || + new_rev[-1] != ' ' || + status[-1] != ' ') + return FALSE; + + file->status = *status; + + string_copy_rev(file->old.rev, old_rev); + string_copy_rev(file->new.rev, new_rev); + + file->old.mode = strtoul(old_mode, NULL, 8); + file->new.mode = strtoul(new_mode, NULL, 8); + + file->old.name[0] = file->new.name[0] = 0; + + return TRUE; } -enum open_flags { - OPEN_DEFAULT = 0, /* Use default view switching. */ - OPEN_SPLIT = 1, /* Split current view. */ - OPEN_BACKGROUNDED = 2, /* Backgrounded. */ - OPEN_RELOAD = 4, /* Reload view even if it is the current. */ -}; +static bool +status_run(struct view *view, const char cmd[], bool diff, enum line_type type) +{ + struct status *file = NULL; + struct status *unmerged = NULL; + char buf[SIZEOF_STR * 4]; + size_t bufsize = 0; + FILE *pipe; + + pipe = popen(cmd, "r"); + if (!pipe) + return FALSE; + + add_line_data(view, NULL, type); + + while (!feof(pipe) && !ferror(pipe)) { + char *sep; + size_t readsize; + + readsize = fread(buf + bufsize, 1, sizeof(buf) - bufsize, pipe); + if (!readsize) + break; + bufsize += readsize; + + /* Process while we have NUL chars. */ + while ((sep = memchr(buf, 0, bufsize))) { + size_t sepsize = sep - buf + 1; + + if (!file) { + if (!realloc_lines(view, view->line_size + 1)) + goto error_out; + + file = calloc(1, sizeof(*file)); + if (!file) + goto error_out; + + add_line_data(view, file, type); + } + + /* Parse diff info part. */ + if (!diff) { + file->status = '?'; + + } else if (!file->status) { + if (!status_get_diff(file, buf, sepsize)) + goto error_out; + + bufsize -= sepsize; + memmove(buf, sep + 1, bufsize); + + sep = memchr(buf, 0, bufsize); + if (!sep) + break; + sepsize = sep - buf + 1; + + /* Collapse all 'M'odified entries that + * follow a associated 'U'nmerged entry. + */ + if (file->status == 'U') { + unmerged = file; + + } else if (unmerged) { + int collapse = !strcmp(buf, unmerged->new.name); + + unmerged = NULL; + if (collapse) { + free(file); + view->lines--; + continue; + } + } + } + + /* Grab the old name for rename/copy. */ + if (!*file->old.name && + (file->status == 'R' || file->status == 'C')) { + sepsize = sep - buf + 1; + string_ncopy(file->old.name, buf, sepsize); + bufsize -= sepsize; + memmove(buf, sep + 1, bufsize); + + sep = memchr(buf, 0, bufsize); + if (!sep) + break; + sepsize = sep - buf + 1; + } + + /* git-ls-files just delivers a NUL separated + * list of file names similar to the second half + * of the git-diff-* output. */ + string_ncopy(file->new.name, buf, sepsize); + if (!*file->old.name) + string_copy(file->old.name, file->new.name); + bufsize -= sepsize; + memmove(buf, sep + 1, bufsize); + file = NULL; + } + } + + if (ferror(pipe)) { +error_out: + pclose(pipe); + return FALSE; + } + + if (!view->line[view->lines - 1].data) + add_line_data(view, NULL, LINE_STAT_NONE); + + pclose(pipe); + return TRUE; +} + +/* Don't show unmerged entries in the staged section. */ +#define STATUS_DIFF_INDEX_CMD "git diff-index -z --diff-filter=ACDMRTXB --cached -M HEAD" +#define STATUS_DIFF_FILES_CMD "git update-index -q --refresh && git diff-files -z" +#define STATUS_LIST_OTHER_CMD \ + "git ls-files -z --others --exclude-per-directory=.gitignore" + +#define STATUS_DIFF_INDEX_SHOW_CMD \ + "git diff-index --root --patch-with-stat -C -M --cached HEAD -- %s %s 2>/dev/null" + +#define STATUS_DIFF_FILES_SHOW_CMD \ + "git diff-files --root --patch-with-stat -C -M -- %s %s 2>/dev/null" + +/* First parse staged info using git-diff-index(1), then parse unstaged + * info using git-diff-files(1), and finally untracked files using + * git-ls-files(1). */ +static bool +status_open(struct view *view) +{ + struct stat statbuf; + char exclude[SIZEOF_STR]; + char cmd[SIZEOF_STR]; + unsigned long prev_lineno = view->lineno; + size_t i; + + for (i = 0; i < view->lines; i++) + free(view->line[i].data); + free(view->line); + view->lines = view->line_size = view->lineno = 0; + view->line = NULL; + + if (!realloc_lines(view, view->line_size + 6)) + return FALSE; + + if (!string_format(exclude, "%s/info/exclude", opt_git_dir)) + return FALSE; + + string_copy(cmd, STATUS_LIST_OTHER_CMD); + + if (stat(exclude, &statbuf) >= 0) { + size_t cmdsize = strlen(cmd); + + if (!string_format_from(cmd, &cmdsize, " %s", "--exclude-from=") || + sq_quote(cmd, cmdsize, exclude) >= sizeof(cmd)) + return FALSE; + } + + if (!status_run(view, STATUS_DIFF_INDEX_CMD, TRUE, LINE_STAT_STAGED) || + !status_run(view, STATUS_DIFF_FILES_CMD, TRUE, LINE_STAT_UNSTAGED) || + !status_run(view, cmd, FALSE, LINE_STAT_UNTRACKED)) + return FALSE; + + /* If all went well restore the previous line number to stay in + * the context. */ + if (prev_lineno < view->lines) + view->lineno = prev_lineno; + else + view->lineno = view->lines - 1; + + return TRUE; +} + +static bool +status_draw(struct view *view, struct line *line, unsigned int lineno, bool selected) +{ + struct status *status = line->data; + + wmove(view->win, lineno, 0); + + if (selected) { + wattrset(view->win, get_line_attr(LINE_CURSOR)); + wchgat(view->win, -1, 0, LINE_CURSOR, NULL); + + } else if (!status && line->type != LINE_STAT_NONE) { + wattrset(view->win, get_line_attr(LINE_STAT_SECTION)); + wchgat(view->win, -1, 0, LINE_STAT_SECTION, NULL); + + } else { + wattrset(view->win, get_line_attr(line->type)); + } + + if (!status) { + char *text; + + switch (line->type) { + case LINE_STAT_STAGED: + text = "Changes to be committed:"; + break; + + case LINE_STAT_UNSTAGED: + text = "Changed but not updated:"; + break; + + case LINE_STAT_UNTRACKED: + text = "Untracked files:"; + break; + + case LINE_STAT_NONE: + text = " (no files)"; + break; + + default: + return FALSE; + } + + waddstr(view->win, text); + return TRUE; + } + + waddch(view->win, status->status); + if (!selected) + wattrset(view->win, A_NORMAL); + wmove(view->win, lineno, 4); + waddstr(view->win, status->new.name); + + return TRUE; +} + +static enum request +status_enter(struct view *view, struct line *line) +{ + struct status *status = line->data; + char oldpath[SIZEOF_STR] = ""; + char newpath[SIZEOF_STR] = ""; + char *info; + size_t cmdsize = 0; + + if (line->type == LINE_STAT_NONE || + (!status && line[1].type == LINE_STAT_NONE)) { + report("No file to diff"); + return REQ_NONE; + } + + if (status) { + if (sq_quote(oldpath, 0, status->old.name) >= sizeof(oldpath)) + return REQ_QUIT; + /* Diffs for unmerged entries are empty when pasing the + * new path, so leave it empty. */ + if (status->status != 'U' && + sq_quote(newpath, 0, status->new.name) >= sizeof(newpath)) + return REQ_QUIT; + } + + if (opt_cdup[0] && + line->type != LINE_STAT_UNTRACKED && + !string_format_from(opt_cmd, &cmdsize, "cd %s;", opt_cdup)) + return REQ_QUIT; + + switch (line->type) { + case LINE_STAT_STAGED: + if (!string_format_from(opt_cmd, &cmdsize, + STATUS_DIFF_INDEX_SHOW_CMD, oldpath, newpath)) + return REQ_QUIT; + if (status) + info = "Staged changes to %s"; + else + info = "Staged changes"; + break; + + case LINE_STAT_UNSTAGED: + if (!string_format_from(opt_cmd, &cmdsize, + STATUS_DIFF_FILES_SHOW_CMD, oldpath, newpath)) + return REQ_QUIT; + if (status) + info = "Unstaged changes to %s"; + else + info = "Unstaged changes"; + break; + + case LINE_STAT_UNTRACKED: + if (opt_pipe) + return REQ_QUIT; + + + if (!status) { + report("No file to show"); + return REQ_NONE; + } + + opt_pipe = fopen(status->new.name, "r"); + info = "Untracked file %s"; + break; + + default: + die("line type %d not handled in switch", line->type); + } + + open_view(view, REQ_VIEW_STAGE, OPEN_RELOAD | OPEN_SPLIT); + if (view_is_displayed(VIEW(REQ_VIEW_STAGE))) { + if (status) { + stage_status = *status; + } else { + memset(&stage_status, 0, sizeof(stage_status)); + } + + stage_line_type = line->type; + string_format(VIEW(REQ_VIEW_STAGE)->ref, info, stage_status.new.name); + } + + return REQ_NONE; +} + + +static bool +status_update_file(struct view *view, struct status *status, enum line_type type) +{ + char cmd[SIZEOF_STR]; + char buf[SIZEOF_STR]; + size_t cmdsize = 0; + size_t bufsize = 0; + size_t written = 0; + FILE *pipe; + + if (opt_cdup[0] && + type != LINE_STAT_UNTRACKED && + !string_format_from(cmd, &cmdsize, "cd %s;", opt_cdup)) + return FALSE; + + switch (type) { + case LINE_STAT_STAGED: + if (!string_format_from(buf, &bufsize, "%06o %s\t%s%c", + status->old.mode, + status->old.rev, + status->old.name, 0)) + return FALSE; + + string_add(cmd, cmdsize, "git update-index -z --index-info"); + break; + + case LINE_STAT_UNSTAGED: + case LINE_STAT_UNTRACKED: + if (!string_format_from(buf, &bufsize, "%s%c", status->new.name, 0)) + return FALSE; + + string_add(cmd, cmdsize, "git update-index -z --add --remove --stdin"); + break; + + default: + die("line type %d not handled in switch", type); + } + + pipe = popen(cmd, "w"); + if (!pipe) + return FALSE; + + while (!ferror(pipe) && written < bufsize) { + written += fwrite(buf + written, 1, bufsize - written, pipe); + } + + pclose(pipe); + + if (written != bufsize) + return FALSE; + + return TRUE; +} static void -open_view(struct view *prev, enum request request, enum open_flags flags) +status_update(struct view *view) { - bool backgrounded = !!(flags & OPEN_BACKGROUNDED); - bool split = !!(flags & OPEN_SPLIT); - bool reload = !!(flags & OPEN_RELOAD); - struct view *view = VIEW(request); - int nviews = displayed_views(); - struct view *base_view = display[0]; + struct line *line = &view->line[view->lineno]; - if (view == prev && nviews == 1 && !reload) { - report("Already in %s view", view->name); - return; + assert(view->lines); + + if (!line->data) { + while (++line < view->line + view->lines && line->data) { + if (!status_update_file(view, line->data, line->type)) + report("Failed to update file status"); + } + + if (!line[-1].data) { + report("Nothing to update"); + return; + } + + } else if (!status_update_file(view, line->data, line->type)) { + report("Failed to update file status"); } +} - if ((reload || strcmp(view->vid, view->id)) && - !begin_update(view)) { - report("Failed to load %s view", view->name); +static enum request +status_request(struct view *view, enum request request, struct line *line) +{ + struct status *status = line->data; + + switch (request) { + case REQ_STATUS_UPDATE: + status_update(view); + break; + + case REQ_STATUS_MERGE: + if (!status || status->status != 'U') { + report("Merging only possible for files with unmerged status ('U')."); + return REQ_NONE; + } + open_mergetool(status->new.name); + break; + + case REQ_EDIT: + if (!status) + return request; + + open_editor(status->status != '?', status->new.name); + break; + + case REQ_ENTER: + /* After returning the status view has been split to + * show the stage view. No further reloading is + * necessary. */ + status_enter(view, line); + return REQ_NONE; + + case REQ_REFRESH: + /* Simply reload the view. */ + break; + + default: + return request; + } + + open_view(view, REQ_VIEW_STATUS, OPEN_RELOAD); + + return REQ_NONE; +} + +static void +status_select(struct view *view, struct line *line) +{ + struct status *status = line->data; + char file[SIZEOF_STR] = "all files"; + char *text; + char *key; + + if (status && !string_format(file, "'%s'", status->new.name)) return; + + if (!status && line[1].type == LINE_STAT_NONE) + line++; + + switch (line->type) { + case LINE_STAT_STAGED: + text = "Press %s to unstage %s for commit"; + break; + + case LINE_STAT_UNSTAGED: + text = "Press %s to stage %s for commit"; + break; + + case LINE_STAT_UNTRACKED: + text = "Press %s to stage %s for addition"; + break; + + case LINE_STAT_NONE: + text = "Nothing to update"; + break; + + default: + die("line type %d not handled in switch", line->type); } - if (split) { - display[current_view + 1] = view; - if (!backgrounded) - current_view++; + if (status && status->status == 'U') { + text = "Press %s to resolve conflict in %s"; + key = get_key(REQ_STATUS_MERGE); + } else { - /* Maximize the current view. */ - memset(display, 0, sizeof(display)); - current_view = 0; - display[current_view] = view; + key = get_key(REQ_STATUS_UPDATE); } - /* Resize the view when switching between split- and full-screen, - * or when switching between two different full-screen views. */ - if (nviews != displayed_views() || - (nviews == 1 && base_view != display[0])) - resize_display(); + string_format(view->ref, text, key, file); +} - if (split && prev->lineno - prev->offset >= prev->height) { - /* Take the title line into account. */ - int lines = prev->lineno - prev->offset - prev->height + 1; +static bool +status_grep(struct view *view, struct line *line) +{ + struct status *status = line->data; + enum { S_STATUS, S_NAME, S_END } state; + char buf[2] = "?"; + regmatch_t pmatch; - /* Scroll the view that was split if the current line is - * outside the new limited view. */ - do_scroll_view(prev, lines, TRUE); - } + if (!status) + return FALSE; - if (prev && view != prev) { - if (split && !backgrounded) { - /* "Blur" the previous view. */ - update_view_title(prev); + for (state = S_STATUS; state < S_END; state++) { + char *text; + + switch (state) { + case S_NAME: text = status->new.name; break; + case S_STATUS: + buf[0] = status->status; + text = buf; + break; + + default: + return FALSE; } - view->parent = prev; + if (regexec(view->regex, text, 1, &pmatch, 0) != REG_NOMATCH) + return TRUE; } - if (view->pipe && view->lines == 0) { - /* Clear the old view and let the incremental updating refill - * the screen. */ - wclear(view->win); - report(""); - } else { - redraw_view(view); - if (view == VIEW(REQ_VIEW_HELP)) - report("%s", TIG_HELP); - else - report(""); + return FALSE; +} + +static struct view_ops status_ops = { + "file", + status_open, + NULL, + status_draw, + status_request, + status_grep, + status_select, +}; + + +static bool +stage_diff_line(FILE *pipe, struct line *line) +{ + char *buf = line->data; + size_t bufsize = strlen(buf); + size_t written = 0; + + while (!ferror(pipe) && written < bufsize) { + written += fwrite(buf + written, 1, bufsize - written, pipe); } - /* If the view is backgrounded the above calls to report() - * won't redraw the view title. */ - if (backgrounded) - update_view_title(view); + fputc('\n', pipe); + + return written == bufsize; } +static struct line * +stage_diff_hdr(struct view *view, struct line *line) +{ + int diff_hdr_dir = line->type == LINE_DIFF_CHUNK ? -1 : 1; + struct line *diff_hdr; -/* - * User request switch noodle - */ + if (line->type == LINE_DIFF_CHUNK) + diff_hdr = line - 1; + else + diff_hdr = view->line + 1; -static int -view_driver(struct view *view, enum request request) + while (diff_hdr > view->line && diff_hdr < view->line + view->lines) { + if (diff_hdr->type == LINE_DIFF_HEADER) + return diff_hdr; + + diff_hdr += diff_hdr_dir; + } + + return NULL; +} + +static bool +stage_update_chunk(struct view *view, struct line *line) { - int i; + char cmd[SIZEOF_STR]; + size_t cmdsize = 0; + struct line *diff_hdr, *diff_chunk, *diff_end; + FILE *pipe; - switch (request) { - case REQ_MOVE_UP: - case REQ_MOVE_DOWN: - case REQ_MOVE_PAGE_UP: - case REQ_MOVE_PAGE_DOWN: - case REQ_MOVE_FIRST_LINE: - case REQ_MOVE_LAST_LINE: - move_view(view, request, TRUE); - break; + diff_hdr = stage_diff_hdr(view, line); + if (!diff_hdr) + return FALSE; - case REQ_SCROLL_LINE_DOWN: - case REQ_SCROLL_LINE_UP: - case REQ_SCROLL_PAGE_DOWN: - case REQ_SCROLL_PAGE_UP: - scroll_view(view, request); - break; + if (opt_cdup[0] && + !string_format_from(cmd, &cmdsize, "cd %s;", opt_cdup)) + return FALSE; - case REQ_VIEW_MAIN: - case REQ_VIEW_DIFF: - case REQ_VIEW_LOG: - case REQ_VIEW_HELP: - case REQ_VIEW_PAGER: - open_view(view, request, OPEN_DEFAULT); - break; + if (!string_format_from(cmd, &cmdsize, + "git apply --cached %s - && " + "git update-index -q --unmerged --refresh 2>/dev/null", + stage_line_type == LINE_STAT_STAGED ? "-R" : "")) + return FALSE; - case REQ_NEXT: - case REQ_PREVIOUS: - request = request == REQ_NEXT ? REQ_MOVE_DOWN : REQ_MOVE_UP; + pipe = popen(cmd, "w"); + if (!pipe) + return FALSE; - if (view == VIEW(REQ_VIEW_DIFF) && - view->parent == VIEW(REQ_VIEW_MAIN)) { - bool redraw = display[1] == view; + diff_end = view->line + view->lines; + if (line->type != LINE_DIFF_CHUNK) { + diff_chunk = diff_hdr; - view = view->parent; - move_view(view, request, redraw); - if (redraw) - update_view_title(view); - } else { - move_view(view, request, TRUE); - break; - } - /* Fall-through */ + } else { + for (diff_chunk = line + 1; diff_chunk < diff_end; diff_chunk++) + if (diff_chunk->type == LINE_DIFF_CHUNK || + diff_chunk->type == LINE_DIFF_HEADER) + diff_end = diff_chunk; + + diff_chunk = line; + + while (diff_hdr->type != LINE_DIFF_CHUNK) { + switch (diff_hdr->type) { + case LINE_DIFF_HEADER: + case LINE_DIFF_INDEX: + case LINE_DIFF_ADD: + case LINE_DIFF_DEL: + break; - case REQ_ENTER: - if (!view->lines) { - report("Nothing to enter"); - break; + default: + diff_hdr++; + continue; + } + + if (!stage_diff_line(pipe, diff_hdr++)) { + pclose(pipe); + return FALSE; + } } - return view->ops->enter(view, &view->line[view->lineno]); + } - case REQ_VIEW_NEXT: - { - int nviews = displayed_views(); - int next_view = (current_view + 1) % nviews; + while (diff_chunk < diff_end && stage_diff_line(pipe, diff_chunk)) + diff_chunk++; - if (next_view == current_view) { - report("Only one view is displayed"); - break; + pclose(pipe); + + if (diff_chunk != diff_end) + return FALSE; + + return TRUE; +} + +static void +stage_update(struct view *view, struct line *line) +{ + if (stage_line_type != LINE_STAT_UNTRACKED && + (line->type == LINE_DIFF_CHUNK || !stage_status.status)) { + if (!stage_update_chunk(view, line)) { + report("Failed to apply chunk"); + return; } - current_view = next_view; - /* Blur out the title of the previous view. */ - update_view_title(view); - report(""); - break; + } else if (!status_update_file(view, &stage_status, stage_line_type)) { + report("Failed to update file"); + return; } - case REQ_TOGGLE_LINE_NUMBERS: - opt_line_number = !opt_line_number; - redraw_display(); - break; - case REQ_PROMPT: - /* Always reload^Wrerun commands from the prompt. */ - open_view(view, opt_request, OPEN_RELOAD); - break; + open_view(view, REQ_VIEW_STATUS, OPEN_RELOAD); - case REQ_STOP_LOADING: - for (i = 0; i < ARRAY_SIZE(views); i++) { - view = &views[i]; - if (view->pipe) - report("Stopped loading the %s view", view->name), - end_update(view); - } + view = VIEW(REQ_VIEW_STATUS); + if (view_is_displayed(view)) + status_enter(view, &view->line[view->lineno]); +} + +static enum request +stage_request(struct view *view, enum request request, struct line *line) +{ + switch (request) { + case REQ_STATUS_UPDATE: + stage_update(view, line); break; - case REQ_SHOW_VERSION: - report("%s (built %s)", VERSION, __DATE__); - return TRUE; + case REQ_EDIT: + if (!stage_status.new.name[0]) + return request; - case REQ_SCREEN_RESIZE: - resize_display(); - /* Fall-through */ - case REQ_SCREEN_REDRAW: - redraw_display(); + open_editor(stage_status.status != '?', stage_status.new.name); break; - case REQ_SCREEN_UPDATE: - doupdate(); - return TRUE; - - case REQ_VIEW_CLOSE: - /* XXX: Mark closed views by letting view->parent point to the - * view itself. Parents to closed view should never be - * followed. */ - if (view->parent && - view->parent->parent != view->parent) { - memset(display, 0, sizeof(display)); - current_view = 0; - display[current_view] = view->parent; - view->parent = view; - resize_display(); - redraw_display(); - break; - } - /* Fall-through */ - case REQ_QUIT: - return FALSE; + case REQ_ENTER: + pager_request(view, request, line); + break; default: - /* An unknown key will show most commonly used commands. */ - report("Unknown key, press 'h' for help"); - return TRUE; + return request; } - return TRUE; + return REQ_NONE; } +static struct view_ops stage_ops = { + "line", + NULL, + pager_read, + pager_draw, + stage_request, + pager_grep, + pager_select, +}; + /* - * Pager backend + * Revision graph */ -static bool -pager_draw(struct view *view, struct line *line, unsigned int lineno) -{ - char *text = line->data; - enum line_type type = line->type; - int textlen = strlen(text); - int attr; +struct commit { + char id[SIZEOF_REV]; /* SHA1 ID. */ + char title[128]; /* First line of the commit message. */ + char author[75]; /* Author of the commit. */ + struct tm time; /* Date from the author ident. */ + struct ref **refs; /* Repository references. */ + chtype graph[SIZEOF_REVGRAPH]; /* Ancestry chain graphics. */ + size_t graph_size; /* The width of the graph array. */ +}; - wmove(view->win, lineno, 0); +/* Size of rev graph with no "padding" columns */ +#define SIZEOF_REVITEMS (SIZEOF_REVGRAPH - (SIZEOF_REVGRAPH / 2)) - if (view->offset + lineno == view->lineno) { - if (type == LINE_COMMIT) { - string_copy(view->ref, text + 7); - string_copy(ref_commit, view->ref); - } +struct rev_graph { + struct rev_graph *prev, *next, *parents; + char rev[SIZEOF_REVITEMS][SIZEOF_REV]; + size_t size; + struct commit *commit; + size_t pos; + unsigned int boundary:1; +}; - type = LINE_CURSOR; - wchgat(view->win, -1, 0, type, NULL); - } +/* Parents of the commit being visualized. */ +static struct rev_graph graph_parents[4]; - attr = get_line_attr(type); - wattrset(view->win, attr); +/* The current stack of revisions on the graph. */ +static struct rev_graph graph_stacks[4] = { + { &graph_stacks[3], &graph_stacks[1], &graph_parents[0] }, + { &graph_stacks[0], &graph_stacks[2], &graph_parents[1] }, + { &graph_stacks[1], &graph_stacks[3], &graph_parents[2] }, + { &graph_stacks[2], &graph_stacks[0], &graph_parents[3] }, +}; - if (opt_line_number || opt_tab_size < TABSIZE) { - static char spaces[] = " "; - int col_offset = 0, col = 0; +static inline bool +graph_parent_is_merge(struct rev_graph *graph) +{ + return graph->parents->size > 1; +} - if (opt_line_number) { - unsigned long real_lineno = view->offset + lineno + 1; +static inline void +append_to_rev_graph(struct rev_graph *graph, chtype symbol) +{ + struct commit *commit = graph->commit; - if (real_lineno == 1 || - (real_lineno % opt_num_interval) == 0) { - wprintw(view->win, "%.*d", view->digits, real_lineno); + if (commit->graph_size < ARRAY_SIZE(commit->graph) - 1) + commit->graph[commit->graph_size++] = symbol; +} - } else { - waddnstr(view->win, spaces, - MIN(view->digits, STRING_SIZE(spaces))); - } - waddstr(view->win, ": "); - col_offset = view->digits + 2; +static void +done_rev_graph(struct rev_graph *graph) +{ + if (graph_parent_is_merge(graph) && + graph->pos < graph->size - 1 && + graph->next->size == graph->size + graph->parents->size - 1) { + size_t i = graph->pos + graph->parents->size - 1; + + graph->commit->graph_size = i * 2; + while (i < graph->next->size - 1) { + append_to_rev_graph(graph, ' '); + append_to_rev_graph(graph, '\\'); + i++; } + } - while (text && col_offset + col < view->width) { - int cols_max = view->width - col_offset - col; - char *pos = text; - int cols; - - if (*text == '\t') { - text++; - assert(sizeof(spaces) > TABSIZE); - pos = spaces; - cols = opt_tab_size - (col % opt_tab_size); - - } else { - text = strchr(text, '\t'); - cols = line ? text - pos : strlen(pos); - } - - waddnstr(view->win, pos, MIN(cols, cols_max)); - col += cols; - } + graph->size = graph->pos = 0; + graph->commit = NULL; + memset(graph->parents, 0, sizeof(*graph->parents)); +} - } else { - int col = 0, pos = 0; +static void +push_rev_graph(struct rev_graph *graph, char *parent) +{ + int i; - for (; pos < textlen && col < view->width; pos++, col++) - if (text[pos] == '\t') - col += TABSIZE - (col % TABSIZE) - 1; + /* "Collapse" duplicate parents lines. + * + * FIXME: This needs to also update update the drawn graph but + * for now it just serves as a method for pruning graph lines. */ + for (i = 0; i < graph->size; i++) + if (!strncmp(graph->rev[i], parent, SIZEOF_REV)) + return; - waddnstr(view->win, text, pos); + if (graph->size < SIZEOF_REVITEMS) { + string_copy_rev(graph->rev[graph->size++], parent); } +} - return TRUE; +static chtype +get_rev_graph_symbol(struct rev_graph *graph) +{ + chtype symbol; + + if (graph->boundary) + symbol = REVGRAPH_BOUND; + else if (graph->parents->size == 0) + symbol = REVGRAPH_INIT; + else if (graph_parent_is_merge(graph)) + symbol = REVGRAPH_MERGE; + else if (graph->pos >= graph->size) + symbol = REVGRAPH_BRANCH; + else + symbol = REVGRAPH_COMMIT; + + return symbol; } -static bool -pager_read(struct view *view, struct line *prev, char *line) +static void +draw_rev_graph(struct rev_graph *graph) { - /* Compress empty lines in the help view. */ - if (view == VIEW(REQ_VIEW_HELP) && - !*line && prev && !*((char *) prev->data)) - return TRUE; + struct rev_filler { + chtype separator, line; + }; + enum { DEFAULT, RSHARP, RDIAG, LDIAG }; + static struct rev_filler fillers[] = { + { ' ', REVGRAPH_LINE }, + { '`', '.' }, + { '\'', ' ' }, + { '/', ' ' }, + }; + chtype symbol = get_rev_graph_symbol(graph); + struct rev_filler *filler; + size_t i; - view->line[view->lines].data = strdup(line); - if (!view->line[view->lines].data) - return FALSE; + filler = &fillers[DEFAULT]; - view->line[view->lines].type = get_line_type(line); + for (i = 0; i < graph->pos; i++) { + append_to_rev_graph(graph, filler->line); + if (graph_parent_is_merge(graph->prev) && + graph->prev->pos == i) + filler = &fillers[RSHARP]; - view->lines++; - return TRUE; -} + append_to_rev_graph(graph, filler->separator); + } -static bool -pager_enter(struct view *view, struct line *line) -{ - int split = 0; + /* Place the symbol for this revision. */ + append_to_rev_graph(graph, symbol); - if (line->type == LINE_COMMIT && - (view == VIEW(REQ_VIEW_LOG) || - view == VIEW(REQ_VIEW_PAGER))) { - open_view(view, REQ_VIEW_DIFF, OPEN_SPLIT); - split = 1; + if (graph->prev->size > graph->size) + filler = &fillers[RDIAG]; + else + filler = &fillers[DEFAULT]; + + i++; + + for (; i < graph->size; i++) { + append_to_rev_graph(graph, filler->separator); + append_to_rev_graph(graph, filler->line); + if (graph_parent_is_merge(graph->prev) && + i < graph->prev->pos + graph->parents->size) + filler = &fillers[RSHARP]; + if (graph->prev->size > graph->size) + filler = &fillers[LDIAG]; } - /* Always scroll the view even if it was split. That way - * you can use Enter to scroll through the log view and - * split open each commit diff. */ - scroll_view(view, REQ_SCROLL_LINE_DOWN); + if (graph->prev->size > graph->size) { + append_to_rev_graph(graph, filler->separator); + if (filler->line != ' ') + append_to_rev_graph(graph, filler->line); + } +} - /* FIXME: A minor workaround. Scrolling the view will call report("") - * but if we are scrolling a non-current view this won't properly - * update the view title. */ - if (split) - update_view_title(view); +/* Prepare the next rev graph */ +static void +prepare_rev_graph(struct rev_graph *graph) +{ + size_t i; + + /* First, traverse all lines of revisions up to the active one. */ + for (graph->pos = 0; graph->pos < graph->size; graph->pos++) { + if (!strcmp(graph->rev[graph->pos], graph->commit->id)) + break; + + push_rev_graph(graph->next, graph->rev[graph->pos]); + } - return TRUE; + /* Interleave the new revision parent(s). */ + for (i = 0; !graph->boundary && i < graph->parents->size; i++) + push_rev_graph(graph->next, graph->parents->rev[i]); + + /* Lastly, put any remaining revisions. */ + for (i = graph->pos + 1; i < graph->size; i++) + push_rev_graph(graph->next, graph->rev[i]); } -static struct view_ops pager_ops = { - "line", - pager_draw, - pager_read, - pager_enter, -}; +static void +update_rev_graph(struct rev_graph *graph) +{ + /* If this is the finalizing update ... */ + if (graph->commit) + prepare_rev_graph(graph); + + /* Graph visualization needs a one rev look-ahead, + * so the first update doesn't visualize anything. */ + if (!graph->prev->commit) + return; + + draw_rev_graph(graph->prev); + done_rev_graph(graph->prev->prev); +} /* * Main view backend */ -struct commit { - char id[41]; /* SHA1 ID. */ - char title[75]; /* The first line of the commit message. */ - char author[75]; /* The author of the commit. */ - struct tm time; /* Date from the author ident. */ - struct ref **refs; /* Repository references; tags & branch heads. */ -}; - static bool -main_draw(struct view *view, struct line *line, unsigned int lineno) +main_draw(struct view *view, struct line *line, unsigned int lineno, bool selected) { char buf[DATE_COLS + 1]; struct commit *commit = line->data; @@ -1686,9 +4125,7 @@ main_draw(struct view *view, struct line *line, unsigned int lineno) wmove(view->win, lineno, col); - if (view->offset + lineno == view->lineno) { - string_copy(view->ref, commit->id); - string_copy(ref_commit, view->ref); + if (selected) { type = LINE_CURSOR; wattrset(view->win, get_line_attr(type)); wchgat(view->win, -1, 0, type, NULL); @@ -1727,12 +4164,25 @@ main_draw(struct view *view, struct line *line, unsigned int lineno) } col += AUTHOR_COLS; + + if (opt_rev_graph && commit->graph_size) { + size_t i; + + if (type != LINE_CURSOR) + wattrset(view->win, get_line_attr(LINE_MAIN_REVGRAPH)); + wmove(view->win, lineno, col); + /* Using waddch() instead of waddnstr() ensures that + * they'll be rendered correctly for the cursor line. */ + for (i = 0; i < commit->graph_size; i++) + waddch(view->win, commit->graph[i]); + + waddch(view->win, ' '); + col += commit->graph_size + 1; + } if (type != LINE_CURSOR) wattrset(view->win, A_NORMAL); - mvwaddch(view->win, lineno, col, ACS_LTEE); - wmove(view->win, lineno, col + 2); - col += 2; + wmove(view->win, lineno, col); if (commit->refs) { size_t i = 0; @@ -1742,6 +4192,8 @@ main_draw(struct view *view, struct line *line, unsigned int lineno) ; else if (commit->refs[i]->tag) wattrset(view->win, get_line_attr(LINE_MAIN_TAG)); + else if (commit->refs[i]->remote) + wattrset(view->win, get_line_attr(LINE_MAIN_REMOTE)); else wattrset(view->win, get_line_attr(LINE_MAIN_REF)); waddstr(view->win, "["); @@ -1771,53 +4223,76 @@ main_draw(struct view *view, struct line *line, unsigned int lineno) /* Reads git log --pretty=raw output and parses it into the commit struct. */ static bool -main_read(struct view *view, struct line *prev, char *line) +main_read(struct view *view, char *line) { - enum line_type type = get_line_type(line); + static struct rev_graph *graph = graph_stacks; + enum line_type type; struct commit *commit; - switch (type) { - case LINE_COMMIT: + if (!line) { + update_rev_graph(graph); + return TRUE; + } + + type = get_line_type(line); + if (type == LINE_COMMIT) { commit = calloc(1, sizeof(struct commit)); if (!commit) return FALSE; line += STRING_SIZE("commit "); + if (*line == '-') { + graph->boundary = 1; + line++; + } - view->line[view->lines++].data = commit; - string_copy(commit->id, line); + string_copy_rev(commit->id, line); commit->refs = get_refs(commit->id); + graph->commit = commit; + add_line_data(view, commit, LINE_MAIN_COMMIT); + return TRUE; + } + + if (!view->lines) + return TRUE; + commit = view->line[view->lines - 1].data; + + switch (type) { + case LINE_PARENT: + push_rev_graph(graph->parents, line + STRING_SIZE("parent ")); break; case LINE_AUTHOR: { + /* Parse author lines where the name may be empty: + * author 1138474660 +0100 + */ char *ident = line + STRING_SIZE("author "); - char *end = strchr(ident, '<'); + char *nameend = strchr(ident, '<'); + char *emailend = strchr(ident, '>'); - if (!prev) + if (!nameend || !emailend) break; - commit = prev->data; + update_rev_graph(graph); + graph = graph->next; - if (end) { - for (; end > ident && isspace(end[-1]); end--) ; - *end = 0; + *nameend = *emailend = 0; + ident = chomp_string(ident); + if (!*ident) { + ident = chomp_string(nameend + 1); + if (!*ident) + ident = "Unknown"; } - string_copy(commit->author, ident); + string_ncopy(commit->author, ident, strlen(ident)); /* Parse epoch and timezone */ - if (end) { - char *secs = strchr(end + 1, '>'); - char *zone; - time_t time; - - if (!secs || secs[1] != ' ') - break; + if (emailend[1] == ' ') { + char *secs = emailend + 2; + char *zone = strchr(secs, ' '); + time_t time = (time_t) atol(secs); - secs += 2; - time = (time_t) atol(secs); - zone = strchr(secs, ' '); if (zone && strlen(zone) == STRING_SIZE(" +0700")) { long tz; @@ -1832,205 +4307,99 @@ main_read(struct view *view, struct line *prev, char *line) time -= tz; } + gmtime_r(&time, &commit->time); } break; } default: - if (!prev) - break; - - commit = prev->data; - /* Fill in the commit title if it has not already been set. */ if (commit->title[0]) break; /* Require titles to start with a non-space character at the * offset used by git log. */ - /* FIXME: More gracefull handling of titles; append "..." to - * shortened titles, etc. */ - if (strncmp(line, " ", 4) || - isspace(line[4])) + if (strncmp(line, " ", 4)) break; + line += 4; + /* Well, if the title starts with a whitespace character, + * try to be forgiving. Otherwise we end up with no title. */ + while (isspace(*line)) + line++; + if (*line == '\0') + break; + /* FIXME: More graceful handling of titles; append "..." to + * shortened titles, etc. */ - string_copy(commit->title, line + 4); + string_ncopy(commit->title, line, strlen(line)); } return TRUE; } -static bool -main_enter(struct view *view, struct line *line) +static enum request +main_request(struct view *view, enum request request, struct line *line) { enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT; - open_view(view, REQ_VIEW_DIFF, flags); - return TRUE; -} - -static struct view_ops main_ops = { - "commit", - main_draw, - main_read, - main_enter, -}; - - -/** - * KEYS - * ---- - * Below the default key bindings are shown. - **/ - -struct keymap { - int alias; - int request; -}; - -static struct keymap keymap[] = { - /** - * View switching - * ~~~~~~~~~~~~~~ - * m:: - * Switch to main view. - * d:: - * Switch to diff view. - * l:: - * Switch to log view. - * p:: - * Switch to pager view. - * h:: - * Show man page. - **/ - { 'm', REQ_VIEW_MAIN }, - { 'd', REQ_VIEW_DIFF }, - { 'l', REQ_VIEW_LOG }, - { 'p', REQ_VIEW_PAGER }, - { 'h', REQ_VIEW_HELP }, - - /** - * View manipulation - * ~~~~~~~~~~~~~~~~~ - * q:: - * Close view, if multiple views are open it will jump back to the - * previous view in the view stack. If it is the last open view it - * will quit. Use 'Q' to quit all views at once. - * Enter:: - * This key is "context sensitive" depending on what view you are - * currently in. When in log view on a commit line or in the main - * view, split the view and show the commit diff. In the diff view - * pressing Enter will simply scroll the view one line down. - * Tab:: - * Switch to next view. - * Up:: - * This key is "context sensitive" and will move the cursor one - * line up. However, uf you opened a diff view from the main view - * (split- or full-screen) it will change the cursor to point to - * the previous commit in the main view and update the diff view - * to display it. - * Down:: - * Similar to 'Up' but will move down. - **/ - { 'q', REQ_VIEW_CLOSE }, - { KEY_TAB, REQ_VIEW_NEXT }, - { KEY_RETURN, REQ_ENTER }, - { KEY_UP, REQ_PREVIOUS }, - { KEY_DOWN, REQ_NEXT }, + if (request == REQ_ENTER) + open_view(view, REQ_VIEW_DIFF, flags); + else + return request; - /** - * Cursor navigation - * ~~~~~~~~~~~~~~~~~ - * j:: - * Move cursor one line up. - * k:: - * Move cursor one line down. - * PgUp:: - * b:: - * -:: - * Move cursor one page up. - * PgDown:: - * Space:: - * Move cursor one page down. - * Home:: - * Jump to first line. - * End:: - * Jump to last line. - **/ - { 'k', REQ_MOVE_UP }, - { 'j', REQ_MOVE_DOWN }, - { KEY_HOME, REQ_MOVE_FIRST_LINE }, - { KEY_END, REQ_MOVE_LAST_LINE }, - { KEY_NPAGE, REQ_MOVE_PAGE_DOWN }, - { ' ', REQ_MOVE_PAGE_DOWN }, - { KEY_PPAGE, REQ_MOVE_PAGE_UP }, - { 'b', REQ_MOVE_PAGE_UP }, - { '-', REQ_MOVE_PAGE_UP }, + return REQ_NONE; +} - /** - * Scrolling - * ~~~~~~~~~ - * Insert:: - * Scroll view one line up. - * Delete:: - * Scroll view one line down. - * w:: - * Scroll view one page up. - * s:: - * Scroll view one page down. - **/ - { KEY_IC, REQ_SCROLL_LINE_UP }, - { KEY_DC, REQ_SCROLL_LINE_DOWN }, - { 'w', REQ_SCROLL_PAGE_UP }, - { 's', REQ_SCROLL_PAGE_DOWN }, +static bool +main_grep(struct view *view, struct line *line) +{ + struct commit *commit = line->data; + enum { S_TITLE, S_AUTHOR, S_DATE, S_END } state; + char buf[DATE_COLS + 1]; + regmatch_t pmatch; + + for (state = S_TITLE; state < S_END; state++) { + char *text; + + switch (state) { + case S_TITLE: text = commit->title; break; + case S_AUTHOR: text = commit->author; break; + case S_DATE: + if (!strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time)) + continue; + text = buf; + break; - /** - * Misc - * ~~~~ - * Q:: - * Quit. - * r:: - * Redraw screen. - * z:: - * Stop all background loading. This can be useful if you use - * tig(1) in a repository with a long history without limiting - * the revision log. - * v:: - * Show version. - * n:: - * Toggle line numbers on/off. - * ':':: - * Open prompt. This allows you to specify what git command - * to run. Example: - * - * :log -p - **/ - { 'Q', REQ_QUIT }, - { 'z', REQ_STOP_LOADING }, - { 'v', REQ_SHOW_VERSION }, - { 'r', REQ_SCREEN_REDRAW }, - { 'n', REQ_TOGGLE_LINE_NUMBERS }, - { ':', REQ_PROMPT }, + default: + return FALSE; + } - /* wgetch() with nodelay() enabled returns ERR when there's no input. */ - { ERR, REQ_SCREEN_UPDATE }, + if (regexec(view->regex, text, 1, &pmatch, 0) != REG_NOMATCH) + return TRUE; + } - /* Use the ncurses SIGWINCH handler. */ - { KEY_RESIZE, REQ_SCREEN_RESIZE }, -}; + return FALSE; +} -static enum request -get_request(int key) +static void +main_select(struct view *view, struct line *line) { - int i; - - for (i = 0; i < ARRAY_SIZE(keymap); i++) - if (keymap[i].alias == key) - return keymap[i].request; + struct commit *commit = line->data; - return (enum request) key; + string_copy_rev(view->ref, commit->id); + string_copy_rev(ref_commit, view->ref); } +static struct view_ops main_ops = { + "commit", + NULL, + main_read, + main_draw, + main_request, + main_grep, + main_select, +}; + /* * Unicode / UTF-8 handling @@ -2202,33 +4571,52 @@ static bool cursed = FALSE; /* The status window is used for polling keystrokes. */ static WINDOW *status_win; +static bool status_empty = TRUE; + /* Update status and title window. */ static void report(const char *msg, ...) { - static bool empty = TRUE; struct view *view = display[current_view]; - if (!empty || *msg) { + if (input_mode) + return; + + if (!view) { + char buf[SIZEOF_STR]; + va_list args; + + va_start(args, msg); + if (vsnprintf(buf, sizeof(buf), msg, args) >= sizeof(buf)) { + buf[sizeof(buf) - 1] = 0; + buf[sizeof(buf) - 2] = '.'; + buf[sizeof(buf) - 3] = '.'; + buf[sizeof(buf) - 4] = '.'; + } + va_end(args); + die("%s", buf); + } + + if (!status_empty || *msg) { va_list args; va_start(args, msg); - werase(status_win); wmove(status_win, 0, 0); if (*msg) { vwprintw(status_win, msg, args); - empty = FALSE; + status_empty = FALSE; } else { - empty = TRUE; + status_empty = TRUE; } + wclrtoeol(status_win); wrefresh(status_win); va_end(args); } update_view_title(view); - update_display_cursor(); + update_display_cursor(view); } /* Controls when nodelay should be in effect when polling user input. */ @@ -2254,6 +4642,8 @@ init_display(void) /* Leave stdin and stdout alone when acting as a pager. */ FILE *io = fopen("/dev/tty", "r+"); + if (!io) + die("Failed to open /dev/tty"); cursed = !!newterm(NULL, io, io); } @@ -2278,6 +4668,72 @@ init_display(void) wbkgdset(status_win, get_line_attr(LINE_STATUS)); } +static char * +read_prompt(const char *prompt) +{ + enum { READING, STOP, CANCEL } status = READING; + static char buf[sizeof(opt_cmd) - STRING_SIZE("git \0")]; + int pos = 0; + + while (status == READING) { + struct view *view; + int i, key; + + input_mode = TRUE; + + foreach_view (view, i) + update_view(view); + + input_mode = FALSE; + + mvwprintw(status_win, 0, 0, "%s%.*s", prompt, pos, buf); + wclrtoeol(status_win); + + /* Refresh, accept single keystroke of input */ + key = wgetch(status_win); + switch (key) { + case KEY_RETURN: + case KEY_ENTER: + case '\n': + status = pos ? STOP : CANCEL; + break; + + case KEY_BACKSPACE: + if (pos > 0) + pos--; + else + status = CANCEL; + break; + + case KEY_ESC: + status = CANCEL; + break; + + case ERR: + break; + + default: + if (pos >= sizeof(buf)) { + report("Input string too long"); + return NULL; + } + + if (isprint(key)) + buf[pos++] = (char) key; + } + } + + /* Clear the status window */ + status_empty = FALSE; + report(""); + + if (status == CANCEL) + return NULL; + + buf[pos++] = 0; + + return buf; +} /* * Repository references @@ -2340,29 +4796,32 @@ get_refs(char *id) } static int -read_ref(char *id, int idlen, char *name, int namelen) +read_ref(char *id, size_t idlen, char *name, size_t namelen) { struct ref *ref; bool tag = FALSE; - bool tag_commit = FALSE; + bool remote = FALSE; + + if (!strncmp(name, "refs/tags/", STRING_SIZE("refs/tags/"))) { + /* Commits referenced by tags has "^{}" appended. */ + if (name[namelen - 1] != '}') + return OK; - /* Commits referenced by tags has "^{}" appended. */ - if (name[namelen - 1] == '}') { while (namelen > 0 && name[namelen] != '^') namelen--; - if (namelen > 0) - tag_commit = TRUE; - name[namelen] = 0; - } - if (!strncmp(name, "refs/tags/", STRING_SIZE("refs/tags/"))) { - if (!tag_commit) - return OK; - name += STRING_SIZE("refs/tags/"); tag = TRUE; + namelen -= STRING_SIZE("refs/tags/"); + name += STRING_SIZE("refs/tags/"); + + } else if (!strncmp(name, "refs/remotes/", STRING_SIZE("refs/remotes/"))) { + remote = TRUE; + namelen -= STRING_SIZE("refs/remotes/"); + name += STRING_SIZE("refs/remotes/"); } else if (!strncmp(name, "refs/heads/", STRING_SIZE("refs/heads/"))) { - name += STRING_SIZE("refs/heads/"); + namelen -= STRING_SIZE("refs/heads/"); + name += STRING_SIZE("refs/heads/"); } else if (!strcmp(name, "HEAD")) { return OK; @@ -2373,12 +4832,15 @@ read_ref(char *id, int idlen, char *name, int namelen) return ERR; ref = &refs[refs_size++]; - ref->name = strdup(name); + ref->name = malloc(namelen + 1); if (!ref->name) return ERR; + strncpy(ref->name, name, namelen); + ref->name[namelen] = 0; ref->tag = tag; - string_copy(ref->id, id); + ref->remote = remote; + string_copy_rev(ref->id, id); return OK; } @@ -2389,31 +4851,62 @@ load_refs(void) const char *cmd_env = getenv("TIG_LS_REMOTE"); const char *cmd = cmd_env && *cmd_env ? cmd_env : TIG_LS_REMOTE; - return read_properties(cmd, '\t', read_ref); + return read_properties(popen(cmd, "r"), "\t", read_ref); +} + +static int +read_repo_config_option(char *name, size_t namelen, char *value, size_t valuelen) +{ + if (!strcmp(name, "i18n.commitencoding")) + string_ncopy(opt_encoding, value, valuelen); + + if (!strcmp(name, "core.editor")) + string_ncopy(opt_editor, value, valuelen); + + return OK; +} + +static int +load_repo_config(void) +{ + return read_properties(popen(GIT_CONFIG " --list", "r"), + "=", read_repo_config_option); } static int -read_config_option(char *name, int namelen, char *value, int valuelen) +read_repo_info(char *name, size_t namelen, char *value, size_t valuelen) { - if (!strcmp(name, "i18n.commitencoding")) { - string_copy(opt_encoding, value); + if (!opt_git_dir[0]) { + string_ncopy(opt_git_dir, name, namelen); + + } else if (opt_is_inside_work_tree == -1) { + /* This can be 3 different values depending on the + * version of git being used. If git-rev-parse does not + * understand --is-inside-work-tree it will simply echo + * the option else either "true" or "false" is printed. + * Default to true for the unknown case. */ + opt_is_inside_work_tree = strcmp(name, "false") ? TRUE : FALSE; + + } else { + string_ncopy(opt_cdup, name, namelen); } return OK; } +/* XXX: The line outputted by "--show-cdup" can be empty so the option + * must be the last one! */ static int -load_config(void) +load_repo_info(void) { - return read_properties("git repo-config --list", '=', - read_config_option); + return read_properties(popen("git rev-parse --git-dir --is-inside-work-tree --show-cdup 2>/dev/null", "r"), + "=", read_repo_info); } static int -read_properties(const char *cmd, int separator, - int (*read_property)(char *, int, char *, int)) +read_properties(FILE *pipe, const char *separators, + int (*read_property)(char *, size_t, char *, size_t)) { - FILE *pipe = popen(cmd, "r"); char buffer[BUFSIZ]; char *name; int state = OK; @@ -2422,27 +4915,24 @@ read_properties(const char *cmd, int separator, return ERR; while (state == OK && (name = fgets(buffer, sizeof(buffer), pipe))) { - char *value = strchr(name, separator); - int namelen; - int valuelen; + char *value; + size_t namelen; + size_t valuelen; - if (value) { - namelen = value - name; - *value++ = 0; + name = chomp_string(name); + namelen = strcspn(name, separators); + + if (name[namelen]) { + name[namelen] = 0; + value = chomp_string(name + namelen + 1); valuelen = strlen(value); - if (valuelen > 0) { - valuelen--; - value[valuelen] = 0; - } } else { - namelen = strlen(name); value = ""; valuelen = 0; } - if (namelen) - state = read_property(name, namelen, value, valuelen); + state = read_property(name, namelen, value, valuelen); } if (state != ERR && ferror(pipe)) @@ -2458,12 +4948,6 @@ read_properties(const char *cmd, int separator, * Main */ -#if __GNUC__ >= 3 -#define __NORETURN __attribute__((__noreturn__)) -#else -#define __NORETURN -#endif - static void __NORETURN quit(int sig) { @@ -2489,6 +4973,18 @@ die(const char *err, ...) exit(1); } +static void +warn(const char *msg, ...) +{ + va_list args; + + va_start(args, msg); + fputs("tig warning: ", stderr); + vfprintf(stderr, msg, args); + fputs("\n", stderr); + va_end(args); +} + int main(int argc, char *argv[]) { @@ -2498,21 +4994,39 @@ main(int argc, char *argv[]) signal(SIGINT, quit); - /* Load the repo config file first so options can be overwritten from - * the command line. */ - if (load_config() == ERR) + if (setlocale(LC_ALL, "")) { + char *codeset = nl_langinfo(CODESET); + + string_ncopy(opt_codeset, codeset, strlen(codeset)); + } + + if (load_repo_info() == ERR) + die("Failed to load repo info."); + + if (load_options() == ERR) + die("Failed to load user config."); + + /* Load the repo config file so options can be overwritten from + * the command line. */ + if (load_repo_config() == ERR) die("Failed to load repo config."); if (!parse_options(argc, argv)) return 0; - if (load_refs() == ERR) - die("Failed to load refs."); - /* Require a git repository unless when running in pager mode. */ - if (refs_size == 0 && opt_request != REQ_VIEW_PAGER) + if (!opt_git_dir[0]) die("Not a git repository"); + if (*opt_codeset && strcmp(opt_codeset, opt_encoding)) { + opt_iconv = iconv_open(opt_codeset, opt_encoding); + if (opt_iconv == ICONV_NONE) + die("Failed to initialize character set conversion"); + } + + if (load_refs() == ERR) + die("Failed to load refs."); + for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++) view->cmd_env = getenv(view->cmd_env); @@ -2529,31 +5043,48 @@ main(int argc, char *argv[]) /* Refresh, accept single keystroke of input */ key = wgetch(status_win); - request = get_request(key); + + /* wgetch() with nodelay() enabled returns ERR when there's no + * input. */ + if (key == ERR) { + request = REQ_NONE; + continue; + } + + request = get_keybinding(display[current_view]->keymap, key); /* Some low-level request handling. This keeps access to * status_win restricted. */ switch (request) { case REQ_PROMPT: - report(":"); - /* Temporarily switch to line-oriented and echoed - * input. */ - nocbreak(); - echo(); - - if (wgetnstr(status_win, opt_cmd + 4, sizeof(opt_cmd) - 4) == OK) { - memcpy(opt_cmd, "git ", 4); - opt_request = REQ_VIEW_PAGER; - } else { - report("Prompt interrupted by loading view, " - "press 'z' to stop loading views"); - request = REQ_SCREEN_UPDATE; + { + char *cmd = read_prompt(":"); + + if (cmd && string_format(opt_cmd, "git %s", cmd)) { + if (strncmp(cmd, "show", 4) && isspace(cmd[4])) { + opt_request = REQ_VIEW_DIFF; + } else { + opt_request = REQ_VIEW_PAGER; + } + break; } - noecho(); - cbreak(); + request = REQ_NONE; break; + } + case REQ_SEARCH: + case REQ_SEARCH_BACK: + { + const char *prompt = request == REQ_SEARCH + ? "/" : "?"; + char *search = read_prompt(prompt); + if (search) + string_ncopy(opt_search, search, strlen(search)); + else + request = REQ_NONE; + break; + } case REQ_SCREEN_RESIZE: { int height, width; @@ -2576,143 +5107,3 @@ main(int argc, char *argv[]) return 0; } - -/** - * [[refspec]] - * Revision specification - * ---------------------- - * This section describes various ways to specify what revisions to display - * or otherwise limit the view to. tig(1) does not itself parse the described - * revision options so refer to the relevant git man pages for futher - * information. Relevant man pages besides git-log(1) are git-diff(1) and - * git-rev-list(1). - * - * You can tune the interaction with git by making use of the options - * explained in this section. For example, by configuring the environment - * variables described in the <> - * section. - * - * Limit by path name - * ~~~~~~~~~~~~~~~~~~ - * If you are interested only in those revisions that made changes to a - * specific file (or even several files) list the files like this: - * - * $ tig log Makefile README - * - * To avoid ambiguity with repository references such as tag name, be sure - * to separate file names from other git options using "\--". So if you - * have a file named 'master' it will clash with the reference named - * 'master', and thus you will have to use: - * - * $ tig log -- master - * - * NOTE: For the main view, avoiding ambiguity will in some cases require - * you to specify two "\--" options. The first will make tig(1) stop - * option processing and the latter will be passed to git log. - * - * Limit by date or number - * ~~~~~~~~~~~~~~~~~~~~~~~ - * To speed up interaction with git, you can limit the amount of commits - * to show both for the log and main view. Either limit by date using - * e.g. `--since=1.month` or limit by the number of commits using `-n400`. - * - * If you are only interested in changed that happened between two dates - * you can use: - * - * $ tig -- --after="May 5th" --before="2006-05-16 15:44" - * - * NOTE: If you want to avoid having to quote dates containing spaces you - * can use "." instead, e.g. `--after=May.5th`. - * - * Limiting by commit ranges - * ~~~~~~~~~~~~~~~~~~~~~~~~~ - * Alternatively, commits can be limited to a specific range, such as - * "all commits between 'tag-1.0' and 'tag-2.0'". For example: - * - * $ tig log tag-1.0..tag-2.0 - * - * This way of commit limiting makes it trivial to only browse the commits - * which haven't been pushed to a remote branch. Assuming 'origin' is your - * upstream remote branch, using: - * - * $ tig log origin..HEAD - * - * will list what will be pushed to the remote branch. Optionally, the ending - * 'HEAD' can be left out since it is implied. - * - * Limiting by reachability - * ~~~~~~~~~~~~~~~~~~~~~~~~ - * Git interprets the range specifier "tag-1.0..tag-2.0" as - * "all commits reachable from 'tag-2.0' but not from 'tag-1.0'". - * Where reachability refers to what commits are ancestors (or part of the - * history) of the branch or tagged revision in question. - * - * If you prefer to specify which commit to preview in this way use the - * following: - * - * $ tig log tag-2.0 ^tag-1.0 - * - * You can think of '^' as a negation operator. Using this alternate syntax, - * it is possible to further prune commits by specifying multiple branch - * cut offs. - * - * Combining revisions specification - * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - * Revisions options can to some degree be combined, which makes it possible - * to say "show at most 20 commits from within the last month that changed - * files under the Documentation/ directory." - * - * $ tig -- --since=1.month -n20 -- Documentation/ - * - * Examining all repository references - * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - * In some cases, it can be useful to query changes across all references - * in a repository. An example is to ask "did any line of development in - * this repository change a particular file within the last week". This - * can be accomplished using: - * - * $ tig -- --all --since=1.week -- Makefile - * - * BUGS - * ---- - * Known bugs and problems: - * - * - In it's current state tig is pretty much UTF-8 only. - * - * - If the screen width is very small the main view can draw - * outside the current view causing bad wrapping. Same goes - * for title and status windows. - * - * - The cursor can wrap-around on the last line and cause the - * window to scroll. - * - * - The prompt doesn't work while loading. - * - * TODO - * ---- - * Features that should be explored. - * - * - Searching. - * - * - Locale support. - * - * COPYRIGHT - * --------- - * Copyright (c) 2006 Jonas Fonseca - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * SEE ALSO - * -------- - * - link:http://www.kernel.org/pub/software/scm/git/docs/[git(7)], - * - link:http://www.kernel.org/pub/software/scm/cogito/docs/[cogito(7)] - * - * Other git repository browsers: - * - * - gitk(1) - * - qgit(1) - * - gitview(1) - **/