Make keybinding reference more dynamic
[tig] / tig.c
diff --git a/tig.c b/tig.c
index 1983375..45e47b9 100644 (file)
--- a/tig.c
+++ b/tig.c
@@ -12,7 +12,7 @@
  */
 
 #ifndef        VERSION
-#define VERSION        "tig-0.5.git"
+#define VERSION        "tig-0.6.git"
 #endif
 
 #ifndef DEBUG
@@ -90,7 +90,7 @@ static size_t utf8_length(const char *string, size_t max_width, int *coloffset,
 #define        SCALE_SPLIT_VIEW(height)        ((height) * 2 / 3)
 
 #define TIG_LS_REMOTE \
-       "git ls-remote . 2>/dev/null"
+       "git ls-remote $(git rev-parse --git-dir) 2>/dev/null"
 
 #define TIG_DIFF_CMD \
        "git show --root --patch-with-stat --find-copies-harder -B -C %s 2>/dev/null"
@@ -121,6 +121,7 @@ struct ref {
        char *name;             /* Ref name; tag or head names are shortened. */
        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? */
 };
 
@@ -268,6 +269,9 @@ sq_quote(char buf[SIZEOF_STR], size_t bufsize, const char *src)
        }
        BUFPUT('\'');
 
+       if (bufsize < SIZEOF_STR)
+               buf[bufsize] = 0;
+
        return bufsize;
 }
 
@@ -395,7 +399,7 @@ VERSION " (" __DATE__ ")\n"
 
 /* Option and state variables. */
 static bool opt_line_number            = FALSE;
-static bool opt_rev_graph              = TRUE;
+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;
@@ -519,7 +523,7 @@ parse_options(int argc, char *argv[])
                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 --pretty=raw");
                else
                        string_copy(opt_cmd, "git");
                buf_size = strlen(opt_cmd);
@@ -533,7 +537,6 @@ parse_options(int argc, char *argv[])
                        die("command too long");
 
                opt_cmd[buf_size] = 0;
-
        }
 
        if (*opt_encoding && strcasecmp(opt_encoding, "UTF-8"))
@@ -586,6 +589,7 @@ 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_REMOTE,  "",                 COLOR_YELLOW,   COLOR_DEFAULT,  A_BOLD), \
 LINE(MAIN_REF,     "",                 COLOR_CYAN,     COLOR_DEFAULT,  A_BOLD), \
 LINE(TREE_DIR,     "",                 COLOR_DEFAULT,  COLOR_DEFAULT,  A_NORMAL), \
 LINE(TREE_FILE,    "",                 COLOR_DEFAULT,  COLOR_DEFAULT,  A_NORMAL)
@@ -866,7 +870,7 @@ get_key(enum request request)
        static char buf[BUFSIZ];
        static char key_char[] = "'X'";
        size_t pos = 0;
-       char *sep = "    ";
+       char *sep = "";
        int i;
 
        buf[pos] = 0;
@@ -1257,8 +1261,8 @@ static struct view views[] = {
        VIEW_(LOG,   "log",   &pager_ops, ref_head),
        VIEW_(TREE,  "tree",  &tree_ops,  ref_commit),
        VIEW_(BLOB,  "blob",  &blob_ops,  ref_blob),
-       VIEW_(HELP,  "help",  &pager_ops, "static"),
-       VIEW_(PAGER, "pager", &pager_ops, "static"),
+       VIEW_(HELP,  "help",  &pager_ops, ""),
+       VIEW_(PAGER, "pager", &pager_ops, ""),
 };
 
 #define VIEW(req) (&views[(req) - REQ_OFFSET - 1])
@@ -1621,7 +1625,8 @@ move_view(struct view *view, enum request request)
        }
 
        if (!view_is_displayed(view)) {
-               view->offset += steps;
+               view->offset += scroll_steps;
+               assert(0 <= view->offset && view->offset < view->lines);
                view->ops->select(view, &view->line[view->lineno]);
                return;
        }
@@ -1778,17 +1783,21 @@ begin_update(struct view *view)
        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;
+               /* When running random commands, initially show the
+                * command in the title. However, it maybe later be
+                * overwritten if a commit line is selected. */
+               string_copy(view->ref, view->cmd);
 
        } 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] = 0;
+                       opt_path[0] = path[0] = 0;
+               else if (sq_quote(path, 0, opt_path) >= sizeof(path))
+                       return FALSE;
 
-               if (!string_format(view->cmd, format, id, opt_path))
+               if (!string_format(view->cmd, format, id, path))
                        return FALSE;
 
        } else {
@@ -1796,6 +1805,12 @@ begin_update(struct view *view)
 
                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(view->ref, id);
        }
 
        /* Special case for the pager view. */
@@ -1883,7 +1898,7 @@ update_view(struct view *view)
 
                        size_t ret;
 
-                       ret = iconv(opt_iconv, (const char **) &inbuf, &inlen, &outbuf, &outlen);
+                       ret = iconv(opt_iconv, &inbuf, &inlen, &outbuf, &outlen);
                        if (ret != (size_t) -1) {
                                line = out_buffer;
                                linelen = strlen(out_buffer);
@@ -1926,6 +1941,12 @@ update_view(struct view *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);
        }
@@ -1955,6 +1976,24 @@ end:
        return FALSE;
 }
 
+static struct line *
+add_line_text(struct view *view, char *data, enum line_type type)
+{
+       struct line *line = &view->line[view->lines];
+
+       if (!data)
+               return NULL;
+
+       line->data = strdup(data);
+       if (!line->data)
+               return NULL;
+
+       line->type = type;
+       view->lines++;
+
+       return line;
+}
+
 
 /*
  * View opening
@@ -1979,22 +2018,22 @@ static void open_help_view(struct view *view)
                return;
        }
 
-       view->ops->read(view, "Quick reference for tig keybindings:");
+       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) {
-                       view->ops->read(view, "");
-                       view->ops->read(view, req_info[i].help);
+                       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 (!string_format(buf, "%-25s %s", key, req_info[i].help))
+               if (!string_format(buf, "    %-25s %s", key, req_info[i].help))
                        continue;
 
-               view->ops->read(view, buf);
+               add_line_text(view, buf, LINE_DEFAULT);
        }
 }
 
@@ -2109,7 +2148,8 @@ view_driver(struct view *view, enum request request)
 
        case REQ_VIEW_BLOB:
                if (!ref_blob[0]) {
-                       report("No file chosen, press 't' to open tree view");
+                       report("No file chosen, press %s to open tree view",
+                              get_key(REQ_VIEW_TREE));
                        break;
                }
                /* Fall-through */
@@ -2321,7 +2361,7 @@ add_describe_ref(char *buf, size_t *bufpos, char *commit_id, const char *sep)
        char *ref = NULL;
        FILE *pipe;
 
-       if (!string_format(refbuf, "git describe %s", commit_id))
+       if (!string_format(refbuf, "git describe %s 2>/dev/null", commit_id))
                return TRUE;
 
        pipe = popen(refbuf, "r");
@@ -2363,7 +2403,8 @@ add_pager_refs(struct view *view, struct line *line)
 
        do {
                struct ref *ref = refs[refpos];
-               char *fmt = ref->tag ? "%s[%s]" : "%s%s";
+               char *fmt = ref->tag    ? "%s[%s]" :
+                           ref->remote ? "%s<%s>" : "%s%s";
 
                if (!string_format_from(buf, &bufpos, fmt, sep, ref->name))
                        return;
@@ -2385,30 +2426,21 @@ try_add_describe_ref:
        if (!realloc_lines(view, view->line_size + 1))
                return;
 
-       line = &view->line[view->lines];
-       line->data = strdup(buf);
-       if (!line->data)
-               return;
-
-       line->type = LINE_PP_REFS;
-       view->lines++;
+       add_line_text(view, buf, LINE_PP_REFS);
 }
 
 static bool
 pager_read(struct view *view, char *data)
 {
-       struct line *line = &view->line[view->lines];
+       struct line *line;
 
        if (!data)
                return TRUE;
 
-       line->data = strdup(data);
-       if (!line->data)
+       line = add_line_text(view, data, get_line_type(data));
+       if (!line)
                return FALSE;
 
-       line->type = get_line_type(line->data);
-       view->lines++;
-
        if (line->type == LINE_COMMIT &&
            (view == VIEW(REQ_VIEW_DIFF) ||
             view == VIEW(REQ_VIEW_LOG)))
@@ -2462,10 +2494,11 @@ static void
 pager_select(struct view *view, struct line *line)
 {
        if (line->type == LINE_COMMIT) {
-               char *text = line->data;
+               char *text = line->data + STRING_SIZE("commit ");
 
-               string_copy(view->ref, text + STRING_SIZE("commit "));
-               string_copy(ref_commit, view->ref);
+               if (view != VIEW(REQ_VIEW_PAGER))
+                       string_copy(view->ref, text);
+               string_copy(ref_commit, text);
        }
 }
 
@@ -2526,21 +2559,18 @@ tree_read(struct view *view, char *text)
 
        if (first_read) {
                /* Add path info line */
-               if (string_format(buf, "Directory path /%s", opt_path) &&
-                   realloc_lines(view, view->line_size + 1) &&
-                   pager_read(view, buf))
-                       view->line[view->lines - 1].type = LINE_DEFAULT;
-               else
+               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 &&
-                   string_format(buf, TREE_UP_FORMAT, view->ref) &&
-                   realloc_lines(view, view->line_size + 1) &&
-                   pager_read(view, buf))
-                       view->line[view->lines - 1].type = LINE_TREE_DIR;
-               else if (*opt_path)
-                       return FALSE;
+               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 ... */
@@ -2579,14 +2609,13 @@ tree_read(struct view *view, char *text)
                return TRUE;
        }
 
-       if (!pager_read(view, text))
+       if (!add_line_text(view, text, type))
                return FALSE;
 
        /* Move the current line to the first tree entry. */
        if (first_read)
                view->lineno++;
 
-       view->line[view->lines - 1].type = type;
        return TRUE;
 }
 
@@ -2644,15 +2673,10 @@ tree_enter(struct view *view, struct line *line)
 static void
 tree_select(struct view *view, struct line *line)
 {
-       char *text = line->data;
-
-       text += STRING_SIZE("100644 blob ");
+       char *text = line->data + STRING_SIZE("100644 blob ");
 
        if (line->type == LINE_TREE_FILE) {
                string_ncopy(ref_blob, text, 40);
-               /* Also update the blob view's ref, since all there must always
-                * be in sync. */
-               string_copy(VIEW(REQ_VIEW_BLOB)->ref, ref_blob);
 
        } else if (line->type != LINE_TREE_DIR) {
                return;
@@ -2673,12 +2697,7 @@ static struct view_ops tree_ops = {
 static bool
 blob_read(struct view *view, char *line)
 {
-       bool state = pager_read(view, line);
-
-       if (state == TRUE)
-               view->line[view->lines - 1].type = LINE_DEFAULT;
-
-       return state;
+       return add_line_text(view, line, LINE_DEFAULT);
 }
 
 static struct view_ops blob_ops = {
@@ -2978,6 +2997,8 @@ main_draw(struct view *view, struct line *line, unsigned int lineno, bool select
                                ;
                        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, "[");
@@ -3044,46 +3065,35 @@ main_read(struct view *view, char *line)
 
        case LINE_AUTHOR:
        {
+               /* Parse author lines where the name may be empty:
+                *      author  <email@address.tld> 1138474660 +0100
+                */
                char *ident = line + STRING_SIZE("author ");
-               char *end = strchr(ident, '<');
+               char *nameend = strchr(ident, '<');
+               char *emailend = strchr(ident, '>');
 
-               if (!commit)
+               if (!commit || !nameend || !emailend)
                        break;
 
                update_rev_graph(graph);
                graph = graph->next;
 
-               if (end) {
-                       char *email = end + 1;
-
-                       for (; end > ident && isspace(end[-1]); end--) ;
-
-                       if (end == ident && *email) {
-                               ident = email;
-                               end = strchr(ident, '>');
-                               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";
                }
 
-               /* End is NULL or ident meaning there's no author. */
-               if (end <= ident)
-                       ident = "Unknown";
-
                string_copy(commit->author, 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;
 
@@ -3098,6 +3108,7 @@ main_read(struct view *view, char *line)
 
                                time -= tz;
                        }
+
                        gmtime_r(&time, &commit->time);
                }
                break;
@@ -3573,6 +3584,7 @@ read_ref(char *id, int idlen, char *name, int namelen)
 {
        struct ref *ref;
        bool tag = FALSE;
+       bool remote = FALSE;
 
        if (!strncmp(name, "refs/tags/", STRING_SIZE("refs/tags/"))) {
                /* Commits referenced by tags has "^{}" appended. */
@@ -3586,6 +3598,11 @@ read_ref(char *id, int idlen, char *name, int namelen)
                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/"))) {
                namelen -= STRING_SIZE("refs/heads/");
                name    += STRING_SIZE("refs/heads/");
@@ -3606,6 +3623,7 @@ read_ref(char *id, int idlen, char *name, int namelen)
        strncpy(ref->name, name, namelen);
        ref->name[namelen] = 0;
        ref->tag = tag;
+       ref->remote = remote;
        string_copy(ref->id, id);
 
        return OK;