| 1 | /* Copyright (c) 2006 Jonas Fonseca <fonseca@diku.dk> |
| 2 | * |
| 3 | * This program is free software; you can redistribute it and/or |
| 4 | * modify it under the terms of the GNU General Public License as |
| 5 | * published by the Free Software Foundation; either version 2 of |
| 6 | * the License, or (at your option) any later version. |
| 7 | * |
| 8 | * This program is distributed in the hope that it will be useful, |
| 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 11 | * GNU General Public License for more details. |
| 12 | */ |
| 13 | |
| 14 | #ifndef VERSION |
| 15 | #define VERSION "tig-0.4.git" |
| 16 | #endif |
| 17 | |
| 18 | #ifndef DEBUG |
| 19 | #define NDEBUG |
| 20 | #endif |
| 21 | |
| 22 | #include <assert.h> |
| 23 | #include <errno.h> |
| 24 | #include <ctype.h> |
| 25 | #include <signal.h> |
| 26 | #include <stdarg.h> |
| 27 | #include <stdio.h> |
| 28 | #include <stdlib.h> |
| 29 | #include <string.h> |
| 30 | #include <unistd.h> |
| 31 | #include <time.h> |
| 32 | |
| 33 | #include <sys/types.h> |
| 34 | #include <regex.h> |
| 35 | |
| 36 | #include <locale.h> |
| 37 | #include <langinfo.h> |
| 38 | #include <iconv.h> |
| 39 | |
| 40 | #include <curses.h> |
| 41 | |
| 42 | #if __GNUC__ >= 3 |
| 43 | #define __NORETURN __attribute__((__noreturn__)) |
| 44 | #else |
| 45 | #define __NORETURN |
| 46 | #endif |
| 47 | |
| 48 | static void __NORETURN die(const char *err, ...); |
| 49 | static void report(const char *msg, ...); |
| 50 | static int read_properties(FILE *pipe, const char *separators, int (*read)(char *, int, char *, int)); |
| 51 | static void set_nonblocking_input(bool loading); |
| 52 | static size_t utf8_length(const char *string, size_t max_width, int *coloffset, int *trimmed); |
| 53 | |
| 54 | #define ABS(x) ((x) >= 0 ? (x) : -(x)) |
| 55 | #define MIN(x, y) ((x) < (y) ? (x) : (y)) |
| 56 | |
| 57 | #define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0])) |
| 58 | #define STRING_SIZE(x) (sizeof(x) - 1) |
| 59 | |
| 60 | #define SIZEOF_STR 1024 /* Default string size. */ |
| 61 | #define SIZEOF_REF 256 /* Size of symbolic or SHA1 ID. */ |
| 62 | #define SIZEOF_REV 41 /* Holds a SHA-1 and an ending NUL */ |
| 63 | |
| 64 | /* Revision graph */ |
| 65 | |
| 66 | #define REVGRAPH_INIT 'I' |
| 67 | #define REVGRAPH_MERGE 'M' |
| 68 | #define REVGRAPH_BRANCH '+' |
| 69 | #define REVGRAPH_COMMIT '*' |
| 70 | #define REVGRAPH_LINE '|' |
| 71 | |
| 72 | #define SIZEOF_REVGRAPH 19 /* Size of revision ancestry graphics. */ |
| 73 | |
| 74 | /* This color name can be used to refer to the default term colors. */ |
| 75 | #define COLOR_DEFAULT (-1) |
| 76 | |
| 77 | #define ICONV_NONE ((iconv_t) -1) |
| 78 | |
| 79 | /* The format and size of the date column in the main view. */ |
| 80 | #define DATE_FORMAT "%Y-%m-%d %H:%M" |
| 81 | #define DATE_COLS STRING_SIZE("2006-04-29 14:21 ") |
| 82 | |
| 83 | #define AUTHOR_COLS 20 |
| 84 | |
| 85 | /* The default interval between line numbers. */ |
| 86 | #define NUMBER_INTERVAL 1 |
| 87 | |
| 88 | #define TABSIZE 8 |
| 89 | |
| 90 | #define SCALE_SPLIT_VIEW(height) ((height) * 2 / 3) |
| 91 | |
| 92 | #define TIG_LS_REMOTE \ |
| 93 | "git ls-remote . 2>/dev/null" |
| 94 | |
| 95 | #define TIG_DIFF_CMD \ |
| 96 | "git show --root --patch-with-stat --find-copies-harder -B -C %s 2>/dev/null" |
| 97 | |
| 98 | #define TIG_LOG_CMD \ |
| 99 | "git log --cc --stat -n100 %s 2>/dev/null" |
| 100 | |
| 101 | #define TIG_MAIN_CMD \ |
| 102 | "git log --topo-order --pretty=raw %s 2>/dev/null" |
| 103 | |
| 104 | #define TIG_TREE_CMD \ |
| 105 | "git ls-tree %s %s" |
| 106 | |
| 107 | #define TIG_BLOB_CMD \ |
| 108 | "git cat-file blob %s" |
| 109 | |
| 110 | /* XXX: Needs to be defined to the empty string. */ |
| 111 | #define TIG_HELP_CMD "" |
| 112 | #define TIG_PAGER_CMD "" |
| 113 | |
| 114 | /* Some ascii-shorthands fitted into the ncurses namespace. */ |
| 115 | #define KEY_TAB '\t' |
| 116 | #define KEY_RETURN '\r' |
| 117 | #define KEY_ESC 27 |
| 118 | |
| 119 | |
| 120 | struct ref { |
| 121 | char *name; /* Ref name; tag or head names are shortened. */ |
| 122 | char id[SIZEOF_REV]; /* Commit SHA1 ID */ |
| 123 | unsigned int tag:1; /* Is it a tag? */ |
| 124 | unsigned int next:1; /* For ref lists: are there more refs? */ |
| 125 | }; |
| 126 | |
| 127 | static struct ref **get_refs(char *id); |
| 128 | |
| 129 | struct int_map { |
| 130 | const char *name; |
| 131 | int namelen; |
| 132 | int value; |
| 133 | }; |
| 134 | |
| 135 | static int |
| 136 | set_from_int_map(struct int_map *map, size_t map_size, |
| 137 | int *value, const char *name, int namelen) |
| 138 | { |
| 139 | |
| 140 | int i; |
| 141 | |
| 142 | for (i = 0; i < map_size; i++) |
| 143 | if (namelen == map[i].namelen && |
| 144 | !strncasecmp(name, map[i].name, namelen)) { |
| 145 | *value = map[i].value; |
| 146 | return OK; |
| 147 | } |
| 148 | |
| 149 | return ERR; |
| 150 | } |
| 151 | |
| 152 | |
| 153 | /* |
| 154 | * String helpers |
| 155 | */ |
| 156 | |
| 157 | static inline void |
| 158 | string_ncopy_do(char *dst, size_t dstlen, const char *src, size_t srclen) |
| 159 | { |
| 160 | if (srclen > dstlen - 1) |
| 161 | srclen = dstlen - 1; |
| 162 | |
| 163 | strncpy(dst, src, srclen); |
| 164 | dst[srclen] = 0; |
| 165 | } |
| 166 | |
| 167 | /* Shorthands for safely copying into a fixed buffer. */ |
| 168 | |
| 169 | #define string_copy(dst, src) \ |
| 170 | string_ncopy_do(dst, sizeof(dst), src, sizeof(dst)) |
| 171 | |
| 172 | #define string_ncopy(dst, src, srclen) \ |
| 173 | string_ncopy_do(dst, sizeof(dst), src, srclen) |
| 174 | |
| 175 | static char * |
| 176 | chomp_string(char *name) |
| 177 | { |
| 178 | int namelen; |
| 179 | |
| 180 | while (isspace(*name)) |
| 181 | name++; |
| 182 | |
| 183 | namelen = strlen(name) - 1; |
| 184 | while (namelen > 0 && isspace(name[namelen])) |
| 185 | name[namelen--] = 0; |
| 186 | |
| 187 | return name; |
| 188 | } |
| 189 | |
| 190 | static bool |
| 191 | string_nformat(char *buf, size_t bufsize, size_t *bufpos, const char *fmt, ...) |
| 192 | { |
| 193 | va_list args; |
| 194 | size_t pos = bufpos ? *bufpos : 0; |
| 195 | |
| 196 | va_start(args, fmt); |
| 197 | pos += vsnprintf(buf + pos, bufsize - pos, fmt, args); |
| 198 | va_end(args); |
| 199 | |
| 200 | if (bufpos) |
| 201 | *bufpos = pos; |
| 202 | |
| 203 | return pos >= bufsize ? FALSE : TRUE; |
| 204 | } |
| 205 | |
| 206 | #define string_format(buf, fmt, args...) \ |
| 207 | string_nformat(buf, sizeof(buf), NULL, fmt, args) |
| 208 | |
| 209 | #define string_format_from(buf, from, fmt, args...) \ |
| 210 | string_nformat(buf, sizeof(buf), from, fmt, args) |
| 211 | |
| 212 | static int |
| 213 | string_enum_compare(const char *str1, const char *str2, int len) |
| 214 | { |
| 215 | size_t i; |
| 216 | |
| 217 | #define string_enum_sep(x) ((x) == '-' || (x) == '_' || (x) == '.') |
| 218 | |
| 219 | /* Diff-Header == DIFF_HEADER */ |
| 220 | for (i = 0; i < len; i++) { |
| 221 | if (toupper(str1[i]) == toupper(str2[i])) |
| 222 | continue; |
| 223 | |
| 224 | if (string_enum_sep(str1[i]) && |
| 225 | string_enum_sep(str2[i])) |
| 226 | continue; |
| 227 | |
| 228 | return str1[i] - str2[i]; |
| 229 | } |
| 230 | |
| 231 | return 0; |
| 232 | } |
| 233 | |
| 234 | /* Shell quoting |
| 235 | * |
| 236 | * NOTE: The following is a slightly modified copy of the git project's shell |
| 237 | * quoting routines found in the quote.c file. |
| 238 | * |
| 239 | * Help to copy the thing properly quoted for the shell safety. any single |
| 240 | * quote is replaced with '\'', any exclamation point is replaced with '\!', |
| 241 | * and the whole thing is enclosed in a |
| 242 | * |
| 243 | * E.g. |
| 244 | * original sq_quote result |
| 245 | * name ==> name ==> 'name' |
| 246 | * a b ==> a b ==> 'a b' |
| 247 | * a'b ==> a'\''b ==> 'a'\''b' |
| 248 | * a!b ==> a'\!'b ==> 'a'\!'b' |
| 249 | */ |
| 250 | |
| 251 | static size_t |
| 252 | sq_quote(char buf[SIZEOF_STR], size_t bufsize, const char *src) |
| 253 | { |
| 254 | char c; |
| 255 | |
| 256 | #define BUFPUT(x) do { if (bufsize < SIZEOF_STR) buf[bufsize++] = (x); } while (0) |
| 257 | |
| 258 | BUFPUT('\''); |
| 259 | while ((c = *src++)) { |
| 260 | if (c == '\'' || c == '!') { |
| 261 | BUFPUT('\''); |
| 262 | BUFPUT('\\'); |
| 263 | BUFPUT(c); |
| 264 | BUFPUT('\''); |
| 265 | } else { |
| 266 | BUFPUT(c); |
| 267 | } |
| 268 | } |
| 269 | BUFPUT('\''); |
| 270 | |
| 271 | return bufsize; |
| 272 | } |
| 273 | |
| 274 | |
| 275 | /* |
| 276 | * User requests |
| 277 | */ |
| 278 | |
| 279 | #define REQ_INFO \ |
| 280 | /* XXX: Keep the view request first and in sync with views[]. */ \ |
| 281 | REQ_GROUP("View switching") \ |
| 282 | REQ_(VIEW_MAIN, "Show main view"), \ |
| 283 | REQ_(VIEW_DIFF, "Show diff view"), \ |
| 284 | REQ_(VIEW_LOG, "Show log view"), \ |
| 285 | REQ_(VIEW_TREE, "Show tree view"), \ |
| 286 | REQ_(VIEW_BLOB, "Show blob view"), \ |
| 287 | REQ_(VIEW_HELP, "Show help page"), \ |
| 288 | REQ_(VIEW_PAGER, "Show pager view"), \ |
| 289 | \ |
| 290 | REQ_GROUP("View manipulation") \ |
| 291 | REQ_(ENTER, "Enter current line and scroll"), \ |
| 292 | REQ_(NEXT, "Move to next"), \ |
| 293 | REQ_(PREVIOUS, "Move to previous"), \ |
| 294 | REQ_(VIEW_NEXT, "Move focus to next view"), \ |
| 295 | REQ_(VIEW_CLOSE, "Close the current view"), \ |
| 296 | REQ_(QUIT, "Close all views and quit"), \ |
| 297 | \ |
| 298 | REQ_GROUP("Cursor navigation") \ |
| 299 | REQ_(MOVE_UP, "Move cursor one line up"), \ |
| 300 | REQ_(MOVE_DOWN, "Move cursor one line down"), \ |
| 301 | REQ_(MOVE_PAGE_DOWN, "Move cursor one page down"), \ |
| 302 | REQ_(MOVE_PAGE_UP, "Move cursor one page up"), \ |
| 303 | REQ_(MOVE_FIRST_LINE, "Move cursor to first line"), \ |
| 304 | REQ_(MOVE_LAST_LINE, "Move cursor to last line"), \ |
| 305 | \ |
| 306 | REQ_GROUP("Scrolling") \ |
| 307 | REQ_(SCROLL_LINE_UP, "Scroll one line up"), \ |
| 308 | REQ_(SCROLL_LINE_DOWN, "Scroll one line down"), \ |
| 309 | REQ_(SCROLL_PAGE_UP, "Scroll one page up"), \ |
| 310 | REQ_(SCROLL_PAGE_DOWN, "Scroll one page down"), \ |
| 311 | \ |
| 312 | REQ_GROUP("Searching") \ |
| 313 | REQ_(SEARCH, "Search the view"), \ |
| 314 | REQ_(SEARCH_BACK, "Search backwards in the view"), \ |
| 315 | REQ_(FIND_NEXT, "Find next search match"), \ |
| 316 | REQ_(FIND_PREV, "Find previous search match"), \ |
| 317 | \ |
| 318 | REQ_GROUP("Misc") \ |
| 319 | REQ_(NONE, "Do nothing"), \ |
| 320 | REQ_(PROMPT, "Bring up the prompt"), \ |
| 321 | REQ_(SCREEN_REDRAW, "Redraw the screen"), \ |
| 322 | REQ_(SCREEN_RESIZE, "Resize the screen"), \ |
| 323 | REQ_(SHOW_VERSION, "Show version information"), \ |
| 324 | REQ_(STOP_LOADING, "Stop all loading views"), \ |
| 325 | REQ_(TOGGLE_LINENO, "Toggle line numbers"), \ |
| 326 | REQ_(TOGGLE_REV_GRAPH, "Toggle revision graph visualization") |
| 327 | |
| 328 | |
| 329 | /* User action requests. */ |
| 330 | enum request { |
| 331 | #define REQ_GROUP(help) |
| 332 | #define REQ_(req, help) REQ_##req |
| 333 | |
| 334 | /* Offset all requests to avoid conflicts with ncurses getch values. */ |
| 335 | REQ_OFFSET = KEY_MAX + 1, |
| 336 | REQ_INFO, |
| 337 | REQ_UNKNOWN, |
| 338 | |
| 339 | #undef REQ_GROUP |
| 340 | #undef REQ_ |
| 341 | }; |
| 342 | |
| 343 | struct request_info { |
| 344 | enum request request; |
| 345 | char *name; |
| 346 | int namelen; |
| 347 | char *help; |
| 348 | }; |
| 349 | |
| 350 | static struct request_info req_info[] = { |
| 351 | #define REQ_GROUP(help) { 0, NULL, 0, (help) }, |
| 352 | #define REQ_(req, help) { REQ_##req, (#req), STRING_SIZE(#req), (help) } |
| 353 | REQ_INFO |
| 354 | #undef REQ_GROUP |
| 355 | #undef REQ_ |
| 356 | }; |
| 357 | |
| 358 | static enum request |
| 359 | get_request(const char *name) |
| 360 | { |
| 361 | int namelen = strlen(name); |
| 362 | int i; |
| 363 | |
| 364 | for (i = 0; i < ARRAY_SIZE(req_info); i++) |
| 365 | if (req_info[i].namelen == namelen && |
| 366 | !string_enum_compare(req_info[i].name, name, namelen)) |
| 367 | return req_info[i].request; |
| 368 | |
| 369 | return REQ_UNKNOWN; |
| 370 | } |
| 371 | |
| 372 | |
| 373 | /* |
| 374 | * Options |
| 375 | */ |
| 376 | |
| 377 | static const char usage[] = |
| 378 | VERSION " (" __DATE__ ")\n" |
| 379 | "\n" |
| 380 | "Usage: tig [options]\n" |
| 381 | " or: tig [options] [--] [git log options]\n" |
| 382 | " or: tig [options] log [git log options]\n" |
| 383 | " or: tig [options] diff [git diff options]\n" |
| 384 | " or: tig [options] show [git show options]\n" |
| 385 | " or: tig [options] < [git command output]\n" |
| 386 | "\n" |
| 387 | "Options:\n" |
| 388 | " -l Start up in log view\n" |
| 389 | " -d Start up in diff view\n" |
| 390 | " -n[I], --line-number[=I] Show line numbers with given interval\n" |
| 391 | " -b[N], --tab-size[=N] Set number of spaces for tab expansion\n" |
| 392 | " -- Mark end of tig options\n" |
| 393 | " -v, --version Show version and exit\n" |
| 394 | " -h, --help Show help message and exit\n"; |
| 395 | |
| 396 | /* Option and state variables. */ |
| 397 | static bool opt_line_number = FALSE; |
| 398 | static bool opt_rev_graph = TRUE; |
| 399 | static int opt_num_interval = NUMBER_INTERVAL; |
| 400 | static int opt_tab_size = TABSIZE; |
| 401 | static enum request opt_request = REQ_VIEW_MAIN; |
| 402 | static char opt_cmd[SIZEOF_STR] = ""; |
| 403 | static char opt_path[SIZEOF_STR] = ""; |
| 404 | static FILE *opt_pipe = NULL; |
| 405 | static char opt_encoding[20] = "UTF-8"; |
| 406 | static bool opt_utf8 = TRUE; |
| 407 | static char opt_codeset[20] = "UTF-8"; |
| 408 | static iconv_t opt_iconv = ICONV_NONE; |
| 409 | static char opt_search[SIZEOF_STR] = ""; |
| 410 | |
| 411 | enum option_type { |
| 412 | OPT_NONE, |
| 413 | OPT_INT, |
| 414 | }; |
| 415 | |
| 416 | static bool |
| 417 | check_option(char *opt, char short_name, char *name, enum option_type type, ...) |
| 418 | { |
| 419 | va_list args; |
| 420 | char *value = ""; |
| 421 | int *number; |
| 422 | |
| 423 | if (opt[0] != '-') |
| 424 | return FALSE; |
| 425 | |
| 426 | if (opt[1] == '-') { |
| 427 | int namelen = strlen(name); |
| 428 | |
| 429 | opt += 2; |
| 430 | |
| 431 | if (strncmp(opt, name, namelen)) |
| 432 | return FALSE; |
| 433 | |
| 434 | if (opt[namelen] == '=') |
| 435 | value = opt + namelen + 1; |
| 436 | |
| 437 | } else { |
| 438 | if (!short_name || opt[1] != short_name) |
| 439 | return FALSE; |
| 440 | value = opt + 2; |
| 441 | } |
| 442 | |
| 443 | va_start(args, type); |
| 444 | if (type == OPT_INT) { |
| 445 | number = va_arg(args, int *); |
| 446 | if (isdigit(*value)) |
| 447 | *number = atoi(value); |
| 448 | } |
| 449 | va_end(args); |
| 450 | |
| 451 | return TRUE; |
| 452 | } |
| 453 | |
| 454 | /* Returns the index of log or diff command or -1 to exit. */ |
| 455 | static bool |
| 456 | parse_options(int argc, char *argv[]) |
| 457 | { |
| 458 | int i; |
| 459 | |
| 460 | for (i = 1; i < argc; i++) { |
| 461 | char *opt = argv[i]; |
| 462 | |
| 463 | if (!strcmp(opt, "-l")) { |
| 464 | opt_request = REQ_VIEW_LOG; |
| 465 | continue; |
| 466 | } |
| 467 | |
| 468 | if (!strcmp(opt, "-d")) { |
| 469 | opt_request = REQ_VIEW_DIFF; |
| 470 | continue; |
| 471 | } |
| 472 | |
| 473 | if (check_option(opt, 'n', "line-number", OPT_INT, &opt_num_interval)) { |
| 474 | opt_line_number = TRUE; |
| 475 | continue; |
| 476 | } |
| 477 | |
| 478 | if (check_option(opt, 'b', "tab-size", OPT_INT, &opt_tab_size)) { |
| 479 | opt_tab_size = MIN(opt_tab_size, TABSIZE); |
| 480 | continue; |
| 481 | } |
| 482 | |
| 483 | if (check_option(opt, 'v', "version", OPT_NONE)) { |
| 484 | printf("tig version %s\n", VERSION); |
| 485 | return FALSE; |
| 486 | } |
| 487 | |
| 488 | if (check_option(opt, 'h', "help", OPT_NONE)) { |
| 489 | printf(usage); |
| 490 | return FALSE; |
| 491 | } |
| 492 | |
| 493 | if (!strcmp(opt, "--")) { |
| 494 | i++; |
| 495 | break; |
| 496 | } |
| 497 | |
| 498 | if (!strcmp(opt, "log") || |
| 499 | !strcmp(opt, "diff") || |
| 500 | !strcmp(opt, "show")) { |
| 501 | opt_request = opt[0] == 'l' |
| 502 | ? REQ_VIEW_LOG : REQ_VIEW_DIFF; |
| 503 | break; |
| 504 | } |
| 505 | |
| 506 | if (opt[0] && opt[0] != '-') |
| 507 | break; |
| 508 | |
| 509 | die("unknown option '%s'\n\n%s", opt, usage); |
| 510 | } |
| 511 | |
| 512 | if (!isatty(STDIN_FILENO)) { |
| 513 | opt_request = REQ_VIEW_PAGER; |
| 514 | opt_pipe = stdin; |
| 515 | |
| 516 | } else if (i < argc) { |
| 517 | size_t buf_size; |
| 518 | |
| 519 | if (opt_request == REQ_VIEW_MAIN) |
| 520 | /* XXX: This is vulnerable to the user overriding |
| 521 | * options required for the main view parser. */ |
| 522 | string_copy(opt_cmd, "git log --stat --pretty=raw"); |
| 523 | else |
| 524 | string_copy(opt_cmd, "git"); |
| 525 | buf_size = strlen(opt_cmd); |
| 526 | |
| 527 | while (buf_size < sizeof(opt_cmd) && i < argc) { |
| 528 | opt_cmd[buf_size++] = ' '; |
| 529 | buf_size = sq_quote(opt_cmd, buf_size, argv[i++]); |
| 530 | } |
| 531 | |
| 532 | if (buf_size >= sizeof(opt_cmd)) |
| 533 | die("command too long"); |
| 534 | |
| 535 | opt_cmd[buf_size] = 0; |
| 536 | |
| 537 | } |
| 538 | |
| 539 | if (*opt_encoding && strcasecmp(opt_encoding, "UTF-8")) |
| 540 | opt_utf8 = FALSE; |
| 541 | |
| 542 | return TRUE; |
| 543 | } |
| 544 | |
| 545 | |
| 546 | /* |
| 547 | * Line-oriented content detection. |
| 548 | */ |
| 549 | |
| 550 | #define LINE_INFO \ |
| 551 | LINE(DIFF_HEADER, "diff --git ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ |
| 552 | LINE(DIFF_CHUNK, "@@", COLOR_MAGENTA, COLOR_DEFAULT, 0), \ |
| 553 | LINE(DIFF_ADD, "+", COLOR_GREEN, COLOR_DEFAULT, 0), \ |
| 554 | LINE(DIFF_DEL, "-", COLOR_RED, COLOR_DEFAULT, 0), \ |
| 555 | LINE(DIFF_INDEX, "index ", COLOR_BLUE, COLOR_DEFAULT, 0), \ |
| 556 | LINE(DIFF_OLDMODE, "old file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ |
| 557 | LINE(DIFF_NEWMODE, "new file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ |
| 558 | LINE(DIFF_COPY_FROM, "copy from", COLOR_YELLOW, COLOR_DEFAULT, 0), \ |
| 559 | LINE(DIFF_COPY_TO, "copy to", COLOR_YELLOW, COLOR_DEFAULT, 0), \ |
| 560 | LINE(DIFF_RENAME_FROM, "rename from", COLOR_YELLOW, COLOR_DEFAULT, 0), \ |
| 561 | LINE(DIFF_RENAME_TO, "rename to", COLOR_YELLOW, COLOR_DEFAULT, 0), \ |
| 562 | LINE(DIFF_SIMILARITY, "similarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ |
| 563 | LINE(DIFF_DISSIMILARITY,"dissimilarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ |
| 564 | LINE(DIFF_TREE, "diff-tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \ |
| 565 | LINE(PP_AUTHOR, "Author: ", COLOR_CYAN, COLOR_DEFAULT, 0), \ |
| 566 | LINE(PP_COMMIT, "Commit: ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \ |
| 567 | LINE(PP_MERGE, "Merge: ", COLOR_BLUE, COLOR_DEFAULT, 0), \ |
| 568 | LINE(PP_DATE, "Date: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ |
| 569 | LINE(PP_ADATE, "AuthorDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ |
| 570 | LINE(PP_CDATE, "CommitDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ |
| 571 | LINE(PP_REFS, "Refs: ", COLOR_RED, COLOR_DEFAULT, 0), \ |
| 572 | LINE(COMMIT, "commit ", COLOR_GREEN, COLOR_DEFAULT, 0), \ |
| 573 | LINE(PARENT, "parent ", COLOR_BLUE, COLOR_DEFAULT, 0), \ |
| 574 | LINE(TREE, "tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \ |
| 575 | LINE(AUTHOR, "author ", COLOR_CYAN, COLOR_DEFAULT, 0), \ |
| 576 | LINE(COMMITTER, "committer ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \ |
| 577 | LINE(SIGNOFF, " Signed-off-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \ |
| 578 | LINE(ACKED, " Acked-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \ |
| 579 | LINE(DEFAULT, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \ |
| 580 | LINE(CURSOR, "", COLOR_WHITE, COLOR_GREEN, A_BOLD), \ |
| 581 | LINE(STATUS, "", COLOR_GREEN, COLOR_DEFAULT, 0), \ |
| 582 | LINE(TITLE_BLUR, "", COLOR_WHITE, COLOR_BLUE, 0), \ |
| 583 | LINE(TITLE_FOCUS, "", COLOR_WHITE, COLOR_BLUE, A_BOLD), \ |
| 584 | LINE(MAIN_DATE, "", COLOR_BLUE, COLOR_DEFAULT, 0), \ |
| 585 | LINE(MAIN_AUTHOR, "", COLOR_GREEN, COLOR_DEFAULT, 0), \ |
| 586 | LINE(MAIN_COMMIT, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \ |
| 587 | LINE(MAIN_DELIM, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \ |
| 588 | LINE(MAIN_TAG, "", COLOR_MAGENTA, COLOR_DEFAULT, A_BOLD), \ |
| 589 | LINE(MAIN_REF, "", COLOR_CYAN, COLOR_DEFAULT, A_BOLD), \ |
| 590 | LINE(TREE_DIR, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \ |
| 591 | LINE(TREE_FILE, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL) |
| 592 | |
| 593 | enum line_type { |
| 594 | #define LINE(type, line, fg, bg, attr) \ |
| 595 | LINE_##type |
| 596 | LINE_INFO |
| 597 | #undef LINE |
| 598 | }; |
| 599 | |
| 600 | struct line_info { |
| 601 | const char *name; /* Option name. */ |
| 602 | int namelen; /* Size of option name. */ |
| 603 | const char *line; /* The start of line to match. */ |
| 604 | int linelen; /* Size of string to match. */ |
| 605 | int fg, bg, attr; /* Color and text attributes for the lines. */ |
| 606 | }; |
| 607 | |
| 608 | static struct line_info line_info[] = { |
| 609 | #define LINE(type, line, fg, bg, attr) \ |
| 610 | { #type, STRING_SIZE(#type), (line), STRING_SIZE(line), (fg), (bg), (attr) } |
| 611 | LINE_INFO |
| 612 | #undef LINE |
| 613 | }; |
| 614 | |
| 615 | static enum line_type |
| 616 | get_line_type(char *line) |
| 617 | { |
| 618 | int linelen = strlen(line); |
| 619 | enum line_type type; |
| 620 | |
| 621 | for (type = 0; type < ARRAY_SIZE(line_info); type++) |
| 622 | /* Case insensitive search matches Signed-off-by lines better. */ |
| 623 | if (linelen >= line_info[type].linelen && |
| 624 | !strncasecmp(line_info[type].line, line, line_info[type].linelen)) |
| 625 | return type; |
| 626 | |
| 627 | return LINE_DEFAULT; |
| 628 | } |
| 629 | |
| 630 | static inline int |
| 631 | get_line_attr(enum line_type type) |
| 632 | { |
| 633 | assert(type < ARRAY_SIZE(line_info)); |
| 634 | return COLOR_PAIR(type) | line_info[type].attr; |
| 635 | } |
| 636 | |
| 637 | static struct line_info * |
| 638 | get_line_info(char *name, int namelen) |
| 639 | { |
| 640 | enum line_type type; |
| 641 | |
| 642 | for (type = 0; type < ARRAY_SIZE(line_info); type++) |
| 643 | if (namelen == line_info[type].namelen && |
| 644 | !string_enum_compare(line_info[type].name, name, namelen)) |
| 645 | return &line_info[type]; |
| 646 | |
| 647 | return NULL; |
| 648 | } |
| 649 | |
| 650 | static void |
| 651 | init_colors(void) |
| 652 | { |
| 653 | int default_bg = COLOR_BLACK; |
| 654 | int default_fg = COLOR_WHITE; |
| 655 | enum line_type type; |
| 656 | |
| 657 | start_color(); |
| 658 | |
| 659 | if (use_default_colors() != ERR) { |
| 660 | default_bg = -1; |
| 661 | default_fg = -1; |
| 662 | } |
| 663 | |
| 664 | for (type = 0; type < ARRAY_SIZE(line_info); type++) { |
| 665 | struct line_info *info = &line_info[type]; |
| 666 | int bg = info->bg == COLOR_DEFAULT ? default_bg : info->bg; |
| 667 | int fg = info->fg == COLOR_DEFAULT ? default_fg : info->fg; |
| 668 | |
| 669 | init_pair(type, fg, bg); |
| 670 | } |
| 671 | } |
| 672 | |
| 673 | struct line { |
| 674 | enum line_type type; |
| 675 | |
| 676 | /* State flags */ |
| 677 | unsigned int selected:1; |
| 678 | |
| 679 | void *data; /* User data */ |
| 680 | }; |
| 681 | |
| 682 | |
| 683 | /* |
| 684 | * Keys |
| 685 | */ |
| 686 | |
| 687 | struct keybinding { |
| 688 | int alias; |
| 689 | enum request request; |
| 690 | struct keybinding *next; |
| 691 | }; |
| 692 | |
| 693 | static struct keybinding default_keybindings[] = { |
| 694 | /* View switching */ |
| 695 | { 'm', REQ_VIEW_MAIN }, |
| 696 | { 'd', REQ_VIEW_DIFF }, |
| 697 | { 'l', REQ_VIEW_LOG }, |
| 698 | { 't', REQ_VIEW_TREE }, |
| 699 | { 'f', REQ_VIEW_BLOB }, |
| 700 | { 'p', REQ_VIEW_PAGER }, |
| 701 | { 'h', REQ_VIEW_HELP }, |
| 702 | |
| 703 | /* View manipulation */ |
| 704 | { 'q', REQ_VIEW_CLOSE }, |
| 705 | { KEY_TAB, REQ_VIEW_NEXT }, |
| 706 | { KEY_RETURN, REQ_ENTER }, |
| 707 | { KEY_UP, REQ_PREVIOUS }, |
| 708 | { KEY_DOWN, REQ_NEXT }, |
| 709 | |
| 710 | /* Cursor navigation */ |
| 711 | { 'k', REQ_MOVE_UP }, |
| 712 | { 'j', REQ_MOVE_DOWN }, |
| 713 | { KEY_HOME, REQ_MOVE_FIRST_LINE }, |
| 714 | { KEY_END, REQ_MOVE_LAST_LINE }, |
| 715 | { KEY_NPAGE, REQ_MOVE_PAGE_DOWN }, |
| 716 | { ' ', REQ_MOVE_PAGE_DOWN }, |
| 717 | { KEY_PPAGE, REQ_MOVE_PAGE_UP }, |
| 718 | { 'b', REQ_MOVE_PAGE_UP }, |
| 719 | { '-', REQ_MOVE_PAGE_UP }, |
| 720 | |
| 721 | /* Scrolling */ |
| 722 | { KEY_IC, REQ_SCROLL_LINE_UP }, |
| 723 | { KEY_DC, REQ_SCROLL_LINE_DOWN }, |
| 724 | { 'w', REQ_SCROLL_PAGE_UP }, |
| 725 | { 's', REQ_SCROLL_PAGE_DOWN }, |
| 726 | |
| 727 | /* Searching */ |
| 728 | { '/', REQ_SEARCH }, |
| 729 | { '?', REQ_SEARCH_BACK }, |
| 730 | { 'n', REQ_FIND_NEXT }, |
| 731 | { 'N', REQ_FIND_PREV }, |
| 732 | |
| 733 | /* Misc */ |
| 734 | { 'Q', REQ_QUIT }, |
| 735 | { 'z', REQ_STOP_LOADING }, |
| 736 | { 'v', REQ_SHOW_VERSION }, |
| 737 | { 'r', REQ_SCREEN_REDRAW }, |
| 738 | { '.', REQ_TOGGLE_LINENO }, |
| 739 | { 'g', REQ_TOGGLE_REV_GRAPH }, |
| 740 | { ':', REQ_PROMPT }, |
| 741 | |
| 742 | /* wgetch() with nodelay() enabled returns ERR when there's no input. */ |
| 743 | { ERR, REQ_NONE }, |
| 744 | |
| 745 | /* Using the ncurses SIGWINCH handler. */ |
| 746 | { KEY_RESIZE, REQ_SCREEN_RESIZE }, |
| 747 | }; |
| 748 | |
| 749 | #define KEYMAP_INFO \ |
| 750 | KEYMAP_(GENERIC), \ |
| 751 | KEYMAP_(MAIN), \ |
| 752 | KEYMAP_(DIFF), \ |
| 753 | KEYMAP_(LOG), \ |
| 754 | KEYMAP_(TREE), \ |
| 755 | KEYMAP_(BLOB), \ |
| 756 | KEYMAP_(PAGER), \ |
| 757 | KEYMAP_(HELP) \ |
| 758 | |
| 759 | enum keymap { |
| 760 | #define KEYMAP_(name) KEYMAP_##name |
| 761 | KEYMAP_INFO |
| 762 | #undef KEYMAP_ |
| 763 | }; |
| 764 | |
| 765 | static struct int_map keymap_table[] = { |
| 766 | #define KEYMAP_(name) { #name, STRING_SIZE(#name), KEYMAP_##name } |
| 767 | KEYMAP_INFO |
| 768 | #undef KEYMAP_ |
| 769 | }; |
| 770 | |
| 771 | #define set_keymap(map, name) \ |
| 772 | set_from_int_map(keymap_table, ARRAY_SIZE(keymap_table), map, name, strlen(name)) |
| 773 | |
| 774 | static struct keybinding *keybindings[ARRAY_SIZE(keymap_table)]; |
| 775 | |
| 776 | static void |
| 777 | add_keybinding(enum keymap keymap, enum request request, int key) |
| 778 | { |
| 779 | struct keybinding *keybinding; |
| 780 | |
| 781 | keybinding = calloc(1, sizeof(*keybinding)); |
| 782 | if (!keybinding) |
| 783 | die("Failed to allocate keybinding"); |
| 784 | |
| 785 | keybinding->alias = key; |
| 786 | keybinding->request = request; |
| 787 | keybinding->next = keybindings[keymap]; |
| 788 | keybindings[keymap] = keybinding; |
| 789 | } |
| 790 | |
| 791 | /* Looks for a key binding first in the given map, then in the generic map, and |
| 792 | * lastly in the default keybindings. */ |
| 793 | static enum request |
| 794 | get_keybinding(enum keymap keymap, int key) |
| 795 | { |
| 796 | struct keybinding *kbd; |
| 797 | int i; |
| 798 | |
| 799 | for (kbd = keybindings[keymap]; kbd; kbd = kbd->next) |
| 800 | if (kbd->alias == key) |
| 801 | return kbd->request; |
| 802 | |
| 803 | for (kbd = keybindings[KEYMAP_GENERIC]; kbd; kbd = kbd->next) |
| 804 | if (kbd->alias == key) |
| 805 | return kbd->request; |
| 806 | |
| 807 | for (i = 0; i < ARRAY_SIZE(default_keybindings); i++) |
| 808 | if (default_keybindings[i].alias == key) |
| 809 | return default_keybindings[i].request; |
| 810 | |
| 811 | return (enum request) key; |
| 812 | } |
| 813 | |
| 814 | |
| 815 | struct key { |
| 816 | char *name; |
| 817 | int value; |
| 818 | }; |
| 819 | |
| 820 | static struct key key_table[] = { |
| 821 | { "Enter", KEY_RETURN }, |
| 822 | { "Space", ' ' }, |
| 823 | { "Backspace", KEY_BACKSPACE }, |
| 824 | { "Tab", KEY_TAB }, |
| 825 | { "Escape", KEY_ESC }, |
| 826 | { "Left", KEY_LEFT }, |
| 827 | { "Right", KEY_RIGHT }, |
| 828 | { "Up", KEY_UP }, |
| 829 | { "Down", KEY_DOWN }, |
| 830 | { "Insert", KEY_IC }, |
| 831 | { "Delete", KEY_DC }, |
| 832 | { "Hash", '#' }, |
| 833 | { "Home", KEY_HOME }, |
| 834 | { "End", KEY_END }, |
| 835 | { "PageUp", KEY_PPAGE }, |
| 836 | { "PageDown", KEY_NPAGE }, |
| 837 | { "F1", KEY_F(1) }, |
| 838 | { "F2", KEY_F(2) }, |
| 839 | { "F3", KEY_F(3) }, |
| 840 | { "F4", KEY_F(4) }, |
| 841 | { "F5", KEY_F(5) }, |
| 842 | { "F6", KEY_F(6) }, |
| 843 | { "F7", KEY_F(7) }, |
| 844 | { "F8", KEY_F(8) }, |
| 845 | { "F9", KEY_F(9) }, |
| 846 | { "F10", KEY_F(10) }, |
| 847 | { "F11", KEY_F(11) }, |
| 848 | { "F12", KEY_F(12) }, |
| 849 | }; |
| 850 | |
| 851 | static int |
| 852 | get_key_value(const char *name) |
| 853 | { |
| 854 | int i; |
| 855 | |
| 856 | for (i = 0; i < ARRAY_SIZE(key_table); i++) |
| 857 | if (!strcasecmp(key_table[i].name, name)) |
| 858 | return key_table[i].value; |
| 859 | |
| 860 | if (strlen(name) == 1 && isprint(*name)) |
| 861 | return (int) *name; |
| 862 | |
| 863 | return ERR; |
| 864 | } |
| 865 | |
| 866 | static char * |
| 867 | get_key(enum request request) |
| 868 | { |
| 869 | static char buf[BUFSIZ]; |
| 870 | static char key_char[] = "'X'"; |
| 871 | size_t pos = 0; |
| 872 | char *sep = " "; |
| 873 | int i; |
| 874 | |
| 875 | buf[pos] = 0; |
| 876 | |
| 877 | for (i = 0; i < ARRAY_SIZE(default_keybindings); i++) { |
| 878 | struct keybinding *keybinding = &default_keybindings[i]; |
| 879 | char *seq = NULL; |
| 880 | int key; |
| 881 | |
| 882 | if (keybinding->request != request) |
| 883 | continue; |
| 884 | |
| 885 | for (key = 0; key < ARRAY_SIZE(key_table); key++) |
| 886 | if (key_table[key].value == keybinding->alias) |
| 887 | seq = key_table[key].name; |
| 888 | |
| 889 | if (seq == NULL && |
| 890 | keybinding->alias < 127 && |
| 891 | isprint(keybinding->alias)) { |
| 892 | key_char[1] = (char) keybinding->alias; |
| 893 | seq = key_char; |
| 894 | } |
| 895 | |
| 896 | if (!seq) |
| 897 | seq = "'?'"; |
| 898 | |
| 899 | if (!string_format_from(buf, &pos, "%s%s", sep, seq)) |
| 900 | return "Too many keybindings!"; |
| 901 | sep = ", "; |
| 902 | } |
| 903 | |
| 904 | return buf; |
| 905 | } |
| 906 | |
| 907 | |
| 908 | /* |
| 909 | * User config file handling. |
| 910 | */ |
| 911 | |
| 912 | static struct int_map color_map[] = { |
| 913 | #define COLOR_MAP(name) { #name, STRING_SIZE(#name), COLOR_##name } |
| 914 | COLOR_MAP(DEFAULT), |
| 915 | COLOR_MAP(BLACK), |
| 916 | COLOR_MAP(BLUE), |
| 917 | COLOR_MAP(CYAN), |
| 918 | COLOR_MAP(GREEN), |
| 919 | COLOR_MAP(MAGENTA), |
| 920 | COLOR_MAP(RED), |
| 921 | COLOR_MAP(WHITE), |
| 922 | COLOR_MAP(YELLOW), |
| 923 | }; |
| 924 | |
| 925 | #define set_color(color, name) \ |
| 926 | set_from_int_map(color_map, ARRAY_SIZE(color_map), color, name, strlen(name)) |
| 927 | |
| 928 | static struct int_map attr_map[] = { |
| 929 | #define ATTR_MAP(name) { #name, STRING_SIZE(#name), A_##name } |
| 930 | ATTR_MAP(NORMAL), |
| 931 | ATTR_MAP(BLINK), |
| 932 | ATTR_MAP(BOLD), |
| 933 | ATTR_MAP(DIM), |
| 934 | ATTR_MAP(REVERSE), |
| 935 | ATTR_MAP(STANDOUT), |
| 936 | ATTR_MAP(UNDERLINE), |
| 937 | }; |
| 938 | |
| 939 | #define set_attribute(attr, name) \ |
| 940 | set_from_int_map(attr_map, ARRAY_SIZE(attr_map), attr, name, strlen(name)) |
| 941 | |
| 942 | static int config_lineno; |
| 943 | static bool config_errors; |
| 944 | static char *config_msg; |
| 945 | |
| 946 | /* Wants: object fgcolor bgcolor [attr] */ |
| 947 | static int |
| 948 | option_color_command(int argc, char *argv[]) |
| 949 | { |
| 950 | struct line_info *info; |
| 951 | |
| 952 | if (argc != 3 && argc != 4) { |
| 953 | config_msg = "Wrong number of arguments given to color command"; |
| 954 | return ERR; |
| 955 | } |
| 956 | |
| 957 | info = get_line_info(argv[0], strlen(argv[0])); |
| 958 | if (!info) { |
| 959 | config_msg = "Unknown color name"; |
| 960 | return ERR; |
| 961 | } |
| 962 | |
| 963 | if (set_color(&info->fg, argv[1]) == ERR || |
| 964 | set_color(&info->bg, argv[2]) == ERR) { |
| 965 | config_msg = "Unknown color"; |
| 966 | return ERR; |
| 967 | } |
| 968 | |
| 969 | if (argc == 4 && set_attribute(&info->attr, argv[3]) == ERR) { |
| 970 | config_msg = "Unknown attribute"; |
| 971 | return ERR; |
| 972 | } |
| 973 | |
| 974 | return OK; |
| 975 | } |
| 976 | |
| 977 | /* Wants: name = value */ |
| 978 | static int |
| 979 | option_set_command(int argc, char *argv[]) |
| 980 | { |
| 981 | if (argc != 3) { |
| 982 | config_msg = "Wrong number of arguments given to set command"; |
| 983 | return ERR; |
| 984 | } |
| 985 | |
| 986 | if (strcmp(argv[1], "=")) { |
| 987 | config_msg = "No value assigned"; |
| 988 | return ERR; |
| 989 | } |
| 990 | |
| 991 | if (!strcmp(argv[0], "show-rev-graph")) { |
| 992 | opt_rev_graph = (!strcmp(argv[2], "1") || |
| 993 | !strcmp(argv[2], "true") || |
| 994 | !strcmp(argv[2], "yes")); |
| 995 | return OK; |
| 996 | } |
| 997 | |
| 998 | if (!strcmp(argv[0], "line-number-interval")) { |
| 999 | opt_num_interval = atoi(argv[2]); |
| 1000 | return OK; |
| 1001 | } |
| 1002 | |
| 1003 | if (!strcmp(argv[0], "tab-size")) { |
| 1004 | opt_tab_size = atoi(argv[2]); |
| 1005 | return OK; |
| 1006 | } |
| 1007 | |
| 1008 | if (!strcmp(argv[0], "commit-encoding")) { |
| 1009 | char *arg = argv[2]; |
| 1010 | int delimiter = *arg; |
| 1011 | int i; |
| 1012 | |
| 1013 | switch (delimiter) { |
| 1014 | case '"': |
| 1015 | case '\'': |
| 1016 | for (arg++, i = 0; arg[i]; i++) |
| 1017 | if (arg[i] == delimiter) { |
| 1018 | arg[i] = 0; |
| 1019 | break; |
| 1020 | } |
| 1021 | default: |
| 1022 | string_copy(opt_encoding, arg); |
| 1023 | return OK; |
| 1024 | } |
| 1025 | } |
| 1026 | |
| 1027 | config_msg = "Unknown variable name"; |
| 1028 | return ERR; |
| 1029 | } |
| 1030 | |
| 1031 | /* Wants: mode request key */ |
| 1032 | static int |
| 1033 | option_bind_command(int argc, char *argv[]) |
| 1034 | { |
| 1035 | enum request request; |
| 1036 | int keymap; |
| 1037 | int key; |
| 1038 | |
| 1039 | if (argc != 3) { |
| 1040 | config_msg = "Wrong number of arguments given to bind command"; |
| 1041 | return ERR; |
| 1042 | } |
| 1043 | |
| 1044 | if (set_keymap(&keymap, argv[0]) == ERR) { |
| 1045 | config_msg = "Unknown key map"; |
| 1046 | return ERR; |
| 1047 | } |
| 1048 | |
| 1049 | key = get_key_value(argv[1]); |
| 1050 | if (key == ERR) { |
| 1051 | config_msg = "Unknown key"; |
| 1052 | return ERR; |
| 1053 | } |
| 1054 | |
| 1055 | request = get_request(argv[2]); |
| 1056 | if (request == REQ_UNKNOWN) { |
| 1057 | config_msg = "Unknown request name"; |
| 1058 | return ERR; |
| 1059 | } |
| 1060 | |
| 1061 | add_keybinding(keymap, request, key); |
| 1062 | |
| 1063 | return OK; |
| 1064 | } |
| 1065 | |
| 1066 | static int |
| 1067 | set_option(char *opt, char *value) |
| 1068 | { |
| 1069 | char *argv[16]; |
| 1070 | int valuelen; |
| 1071 | int argc = 0; |
| 1072 | |
| 1073 | /* Tokenize */ |
| 1074 | while (argc < ARRAY_SIZE(argv) && (valuelen = strcspn(value, " \t"))) { |
| 1075 | argv[argc++] = value; |
| 1076 | |
| 1077 | value += valuelen; |
| 1078 | if (!*value) |
| 1079 | break; |
| 1080 | |
| 1081 | *value++ = 0; |
| 1082 | while (isspace(*value)) |
| 1083 | value++; |
| 1084 | } |
| 1085 | |
| 1086 | if (!strcmp(opt, "color")) |
| 1087 | return option_color_command(argc, argv); |
| 1088 | |
| 1089 | if (!strcmp(opt, "set")) |
| 1090 | return option_set_command(argc, argv); |
| 1091 | |
| 1092 | if (!strcmp(opt, "bind")) |
| 1093 | return option_bind_command(argc, argv); |
| 1094 | |
| 1095 | config_msg = "Unknown option command"; |
| 1096 | return ERR; |
| 1097 | } |
| 1098 | |
| 1099 | static int |
| 1100 | read_option(char *opt, int optlen, char *value, int valuelen) |
| 1101 | { |
| 1102 | int status = OK; |
| 1103 | |
| 1104 | config_lineno++; |
| 1105 | config_msg = "Internal error"; |
| 1106 | |
| 1107 | /* Check for comment markers, since read_properties() will |
| 1108 | * only ensure opt and value are split at first " \t". */ |
| 1109 | optlen = strcspn(opt, "#"); |
| 1110 | if (optlen == 0) |
| 1111 | return OK; |
| 1112 | |
| 1113 | if (opt[optlen] != 0) { |
| 1114 | config_msg = "No option value"; |
| 1115 | status = ERR; |
| 1116 | |
| 1117 | } else { |
| 1118 | /* Look for comment endings in the value. */ |
| 1119 | int len = strcspn(value, "#"); |
| 1120 | |
| 1121 | if (len < valuelen) { |
| 1122 | valuelen = len; |
| 1123 | value[valuelen] = 0; |
| 1124 | } |
| 1125 | |
| 1126 | status = set_option(opt, value); |
| 1127 | } |
| 1128 | |
| 1129 | if (status == ERR) { |
| 1130 | fprintf(stderr, "Error on line %d, near '%.*s': %s\n", |
| 1131 | config_lineno, optlen, opt, config_msg); |
| 1132 | config_errors = TRUE; |
| 1133 | } |
| 1134 | |
| 1135 | /* Always keep going if errors are encountered. */ |
| 1136 | return OK; |
| 1137 | } |
| 1138 | |
| 1139 | static int |
| 1140 | load_options(void) |
| 1141 | { |
| 1142 | char *home = getenv("HOME"); |
| 1143 | char buf[SIZEOF_STR]; |
| 1144 | FILE *file; |
| 1145 | |
| 1146 | config_lineno = 0; |
| 1147 | config_errors = FALSE; |
| 1148 | |
| 1149 | if (!home || !string_format(buf, "%s/.tigrc", home)) |
| 1150 | return ERR; |
| 1151 | |
| 1152 | /* It's ok that the file doesn't exist. */ |
| 1153 | file = fopen(buf, "r"); |
| 1154 | if (!file) |
| 1155 | return OK; |
| 1156 | |
| 1157 | if (read_properties(file, " \t", read_option) == ERR || |
| 1158 | config_errors == TRUE) |
| 1159 | fprintf(stderr, "Errors while loading %s.\n", buf); |
| 1160 | |
| 1161 | return OK; |
| 1162 | } |
| 1163 | |
| 1164 | |
| 1165 | /* |
| 1166 | * The viewer |
| 1167 | */ |
| 1168 | |
| 1169 | struct view; |
| 1170 | struct view_ops; |
| 1171 | |
| 1172 | /* The display array of active views and the index of the current view. */ |
| 1173 | static struct view *display[2]; |
| 1174 | static unsigned int current_view; |
| 1175 | |
| 1176 | #define foreach_displayed_view(view, i) \ |
| 1177 | for (i = 0; i < ARRAY_SIZE(display) && (view = display[i]); i++) |
| 1178 | |
| 1179 | #define displayed_views() (display[1] != NULL ? 2 : 1) |
| 1180 | |
| 1181 | /* Current head and commit ID */ |
| 1182 | static char ref_blob[SIZEOF_REF] = ""; |
| 1183 | static char ref_commit[SIZEOF_REF] = "HEAD"; |
| 1184 | static char ref_head[SIZEOF_REF] = "HEAD"; |
| 1185 | |
| 1186 | struct view { |
| 1187 | const char *name; /* View name */ |
| 1188 | const char *cmd_fmt; /* Default command line format */ |
| 1189 | const char *cmd_env; /* Command line set via environment */ |
| 1190 | const char *id; /* Points to either of ref_{head,commit,blob} */ |
| 1191 | |
| 1192 | struct view_ops *ops; /* View operations */ |
| 1193 | |
| 1194 | enum keymap keymap; /* What keymap does this view have */ |
| 1195 | |
| 1196 | char cmd[SIZEOF_STR]; /* Command buffer */ |
| 1197 | char ref[SIZEOF_REF]; /* Hovered commit reference */ |
| 1198 | char vid[SIZEOF_REF]; /* View ID. Set to id member when updating. */ |
| 1199 | |
| 1200 | int height, width; /* The width and height of the main window */ |
| 1201 | WINDOW *win; /* The main window */ |
| 1202 | WINDOW *title; /* The title window living below the main window */ |
| 1203 | |
| 1204 | /* Navigation */ |
| 1205 | unsigned long offset; /* Offset of the window top */ |
| 1206 | unsigned long lineno; /* Current line number */ |
| 1207 | |
| 1208 | /* Searching */ |
| 1209 | char grep[SIZEOF_STR]; /* Search string */ |
| 1210 | regex_t *regex; /* Pre-compiled regex */ |
| 1211 | |
| 1212 | /* If non-NULL, points to the view that opened this view. If this view |
| 1213 | * is closed tig will switch back to the parent view. */ |
| 1214 | struct view *parent; |
| 1215 | |
| 1216 | /* Buffering */ |
| 1217 | unsigned long lines; /* Total number of lines */ |
| 1218 | struct line *line; /* Line index */ |
| 1219 | unsigned long line_size;/* Total number of allocated lines */ |
| 1220 | unsigned int digits; /* Number of digits in the lines member. */ |
| 1221 | |
| 1222 | /* Loading */ |
| 1223 | FILE *pipe; |
| 1224 | time_t start_time; |
| 1225 | }; |
| 1226 | |
| 1227 | struct view_ops { |
| 1228 | /* What type of content being displayed. Used in the title bar. */ |
| 1229 | const char *type; |
| 1230 | /* Draw one line; @lineno must be < view->height. */ |
| 1231 | bool (*draw)(struct view *view, struct line *line, unsigned int lineno, bool selected); |
| 1232 | /* Read one line; updates view->line. */ |
| 1233 | bool (*read)(struct view *view, char *data); |
| 1234 | /* Depending on view, change display based on current line. */ |
| 1235 | bool (*enter)(struct view *view, struct line *line); |
| 1236 | /* Search for regex in a line. */ |
| 1237 | bool (*grep)(struct view *view, struct line *line); |
| 1238 | /* Select line */ |
| 1239 | void (*select)(struct view *view, struct line *line); |
| 1240 | }; |
| 1241 | |
| 1242 | static struct view_ops pager_ops; |
| 1243 | static struct view_ops main_ops; |
| 1244 | static struct view_ops tree_ops; |
| 1245 | static struct view_ops blob_ops; |
| 1246 | |
| 1247 | #define VIEW_STR(name, cmd, env, ref, ops, map) \ |
| 1248 | { name, cmd, #env, ref, ops, map} |
| 1249 | |
| 1250 | #define VIEW_(id, name, ops, ref) \ |
| 1251 | VIEW_STR(name, TIG_##id##_CMD, TIG_##id##_CMD, ref, ops, KEYMAP_##id) |
| 1252 | |
| 1253 | |
| 1254 | static struct view views[] = { |
| 1255 | VIEW_(MAIN, "main", &main_ops, ref_head), |
| 1256 | VIEW_(DIFF, "diff", &pager_ops, ref_commit), |
| 1257 | VIEW_(LOG, "log", &pager_ops, ref_head), |
| 1258 | VIEW_(TREE, "tree", &tree_ops, ref_commit), |
| 1259 | VIEW_(BLOB, "blob", &blob_ops, ref_blob), |
| 1260 | VIEW_(HELP, "help", &pager_ops, "static"), |
| 1261 | VIEW_(PAGER, "pager", &pager_ops, "static"), |
| 1262 | }; |
| 1263 | |
| 1264 | #define VIEW(req) (&views[(req) - REQ_OFFSET - 1]) |
| 1265 | |
| 1266 | #define foreach_view(view, i) \ |
| 1267 | for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++) |
| 1268 | |
| 1269 | #define view_is_displayed(view) \ |
| 1270 | (view == display[0] || view == display[1]) |
| 1271 | |
| 1272 | static bool |
| 1273 | draw_view_line(struct view *view, unsigned int lineno) |
| 1274 | { |
| 1275 | struct line *line; |
| 1276 | bool selected = (view->offset + lineno == view->lineno); |
| 1277 | bool draw_ok; |
| 1278 | |
| 1279 | assert(view_is_displayed(view)); |
| 1280 | |
| 1281 | if (view->offset + lineno >= view->lines) |
| 1282 | return FALSE; |
| 1283 | |
| 1284 | line = &view->line[view->offset + lineno]; |
| 1285 | |
| 1286 | if (selected) { |
| 1287 | line->selected = TRUE; |
| 1288 | view->ops->select(view, line); |
| 1289 | } else if (line->selected) { |
| 1290 | line->selected = FALSE; |
| 1291 | wmove(view->win, lineno, 0); |
| 1292 | wclrtoeol(view->win); |
| 1293 | } |
| 1294 | |
| 1295 | scrollok(view->win, FALSE); |
| 1296 | draw_ok = view->ops->draw(view, line, lineno, selected); |
| 1297 | scrollok(view->win, TRUE); |
| 1298 | |
| 1299 | return draw_ok; |
| 1300 | } |
| 1301 | |
| 1302 | static void |
| 1303 | redraw_view_from(struct view *view, int lineno) |
| 1304 | { |
| 1305 | assert(0 <= lineno && lineno < view->height); |
| 1306 | |
| 1307 | for (; lineno < view->height; lineno++) { |
| 1308 | if (!draw_view_line(view, lineno)) |
| 1309 | break; |
| 1310 | } |
| 1311 | |
| 1312 | redrawwin(view->win); |
| 1313 | wrefresh(view->win); |
| 1314 | } |
| 1315 | |
| 1316 | static void |
| 1317 | redraw_view(struct view *view) |
| 1318 | { |
| 1319 | wclear(view->win); |
| 1320 | redraw_view_from(view, 0); |
| 1321 | } |
| 1322 | |
| 1323 | |
| 1324 | static void |
| 1325 | update_view_title(struct view *view) |
| 1326 | { |
| 1327 | char buf[SIZEOF_STR]; |
| 1328 | char state[SIZEOF_STR]; |
| 1329 | size_t bufpos = 0, statelen = 0; |
| 1330 | |
| 1331 | assert(view_is_displayed(view)); |
| 1332 | |
| 1333 | if (view->lines || view->pipe) { |
| 1334 | unsigned int view_lines = view->offset + view->height; |
| 1335 | unsigned int lines = view->lines |
| 1336 | ? MIN(view_lines, view->lines) * 100 / view->lines |
| 1337 | : 0; |
| 1338 | |
| 1339 | string_format_from(state, &statelen, "- %s %d of %d (%d%%)", |
| 1340 | view->ops->type, |
| 1341 | view->lineno + 1, |
| 1342 | view->lines, |
| 1343 | lines); |
| 1344 | |
| 1345 | if (view->pipe) { |
| 1346 | time_t secs = time(NULL) - view->start_time; |
| 1347 | |
| 1348 | /* Three git seconds are a long time ... */ |
| 1349 | if (secs > 2) |
| 1350 | string_format_from(state, &statelen, " %lds", secs); |
| 1351 | } |
| 1352 | } |
| 1353 | |
| 1354 | string_format_from(buf, &bufpos, "[%s]", view->name); |
| 1355 | if (*view->ref && bufpos < view->width) { |
| 1356 | size_t refsize = strlen(view->ref); |
| 1357 | size_t minsize = bufpos + 1 + /* abbrev= */ 7 + 1 + statelen; |
| 1358 | |
| 1359 | if (minsize < view->width) |
| 1360 | refsize = view->width - minsize + 7; |
| 1361 | string_format_from(buf, &bufpos, " %.*s", refsize, view->ref); |
| 1362 | } |
| 1363 | |
| 1364 | if (statelen && bufpos < view->width) { |
| 1365 | string_format_from(buf, &bufpos, " %s", state); |
| 1366 | } |
| 1367 | |
| 1368 | if (view == display[current_view]) |
| 1369 | wbkgdset(view->title, get_line_attr(LINE_TITLE_FOCUS)); |
| 1370 | else |
| 1371 | wbkgdset(view->title, get_line_attr(LINE_TITLE_BLUR)); |
| 1372 | |
| 1373 | werase(view->title); |
| 1374 | mvwaddnstr(view->title, 0, 0, buf, bufpos); |
| 1375 | wmove(view->title, 0, view->width - 1); |
| 1376 | wrefresh(view->title); |
| 1377 | } |
| 1378 | |
| 1379 | static void |
| 1380 | resize_display(void) |
| 1381 | { |
| 1382 | int offset, i; |
| 1383 | struct view *base = display[0]; |
| 1384 | struct view *view = display[1] ? display[1] : display[0]; |
| 1385 | |
| 1386 | /* Setup window dimensions */ |
| 1387 | |
| 1388 | getmaxyx(stdscr, base->height, base->width); |
| 1389 | |
| 1390 | /* Make room for the status window. */ |
| 1391 | base->height -= 1; |
| 1392 | |
| 1393 | if (view != base) { |
| 1394 | /* Horizontal split. */ |
| 1395 | view->width = base->width; |
| 1396 | view->height = SCALE_SPLIT_VIEW(base->height); |
| 1397 | base->height -= view->height; |
| 1398 | |
| 1399 | /* Make room for the title bar. */ |
| 1400 | view->height -= 1; |
| 1401 | } |
| 1402 | |
| 1403 | /* Make room for the title bar. */ |
| 1404 | base->height -= 1; |
| 1405 | |
| 1406 | offset = 0; |
| 1407 | |
| 1408 | foreach_displayed_view (view, i) { |
| 1409 | if (!view->win) { |
| 1410 | view->win = newwin(view->height, 0, offset, 0); |
| 1411 | if (!view->win) |
| 1412 | die("Failed to create %s view", view->name); |
| 1413 | |
| 1414 | scrollok(view->win, TRUE); |
| 1415 | |
| 1416 | view->title = newwin(1, 0, offset + view->height, 0); |
| 1417 | if (!view->title) |
| 1418 | die("Failed to create title window"); |
| 1419 | |
| 1420 | } else { |
| 1421 | wresize(view->win, view->height, view->width); |
| 1422 | mvwin(view->win, offset, 0); |
| 1423 | mvwin(view->title, offset + view->height, 0); |
| 1424 | } |
| 1425 | |
| 1426 | offset += view->height + 1; |
| 1427 | } |
| 1428 | } |
| 1429 | |
| 1430 | static void |
| 1431 | redraw_display(void) |
| 1432 | { |
| 1433 | struct view *view; |
| 1434 | int i; |
| 1435 | |
| 1436 | foreach_displayed_view (view, i) { |
| 1437 | redraw_view(view); |
| 1438 | update_view_title(view); |
| 1439 | } |
| 1440 | } |
| 1441 | |
| 1442 | static void |
| 1443 | update_display_cursor(struct view *view) |
| 1444 | { |
| 1445 | /* Move the cursor to the right-most column of the cursor line. |
| 1446 | * |
| 1447 | * XXX: This could turn out to be a bit expensive, but it ensures that |
| 1448 | * the cursor does not jump around. */ |
| 1449 | if (view->lines) { |
| 1450 | wmove(view->win, view->lineno - view->offset, view->width - 1); |
| 1451 | wrefresh(view->win); |
| 1452 | } |
| 1453 | } |
| 1454 | |
| 1455 | /* |
| 1456 | * Navigation |
| 1457 | */ |
| 1458 | |
| 1459 | /* Scrolling backend */ |
| 1460 | static void |
| 1461 | do_scroll_view(struct view *view, int lines) |
| 1462 | { |
| 1463 | bool redraw_current_line = FALSE; |
| 1464 | |
| 1465 | /* The rendering expects the new offset. */ |
| 1466 | view->offset += lines; |
| 1467 | |
| 1468 | assert(0 <= view->offset && view->offset < view->lines); |
| 1469 | assert(lines); |
| 1470 | |
| 1471 | /* Move current line into the view. */ |
| 1472 | if (view->lineno < view->offset) { |
| 1473 | view->lineno = view->offset; |
| 1474 | redraw_current_line = TRUE; |
| 1475 | } else if (view->lineno >= view->offset + view->height) { |
| 1476 | view->lineno = view->offset + view->height - 1; |
| 1477 | redraw_current_line = TRUE; |
| 1478 | } |
| 1479 | |
| 1480 | assert(view->offset <= view->lineno && view->lineno < view->lines); |
| 1481 | |
| 1482 | /* Redraw the whole screen if scrolling is pointless. */ |
| 1483 | if (view->height < ABS(lines)) { |
| 1484 | redraw_view(view); |
| 1485 | |
| 1486 | } else { |
| 1487 | int line = lines > 0 ? view->height - lines : 0; |
| 1488 | int end = line + ABS(lines); |
| 1489 | |
| 1490 | wscrl(view->win, lines); |
| 1491 | |
| 1492 | for (; line < end; line++) { |
| 1493 | if (!draw_view_line(view, line)) |
| 1494 | break; |
| 1495 | } |
| 1496 | |
| 1497 | if (redraw_current_line) |
| 1498 | draw_view_line(view, view->lineno - view->offset); |
| 1499 | } |
| 1500 | |
| 1501 | redrawwin(view->win); |
| 1502 | wrefresh(view->win); |
| 1503 | report(""); |
| 1504 | } |
| 1505 | |
| 1506 | /* Scroll frontend */ |
| 1507 | static void |
| 1508 | scroll_view(struct view *view, enum request request) |
| 1509 | { |
| 1510 | int lines = 1; |
| 1511 | |
| 1512 | assert(view_is_displayed(view)); |
| 1513 | |
| 1514 | switch (request) { |
| 1515 | case REQ_SCROLL_PAGE_DOWN: |
| 1516 | lines = view->height; |
| 1517 | case REQ_SCROLL_LINE_DOWN: |
| 1518 | if (view->offset + lines > view->lines) |
| 1519 | lines = view->lines - view->offset; |
| 1520 | |
| 1521 | if (lines == 0 || view->offset + view->height >= view->lines) { |
| 1522 | report("Cannot scroll beyond the last line"); |
| 1523 | return; |
| 1524 | } |
| 1525 | break; |
| 1526 | |
| 1527 | case REQ_SCROLL_PAGE_UP: |
| 1528 | lines = view->height; |
| 1529 | case REQ_SCROLL_LINE_UP: |
| 1530 | if (lines > view->offset) |
| 1531 | lines = view->offset; |
| 1532 | |
| 1533 | if (lines == 0) { |
| 1534 | report("Cannot scroll beyond the first line"); |
| 1535 | return; |
| 1536 | } |
| 1537 | |
| 1538 | lines = -lines; |
| 1539 | break; |
| 1540 | |
| 1541 | default: |
| 1542 | die("request %d not handled in switch", request); |
| 1543 | } |
| 1544 | |
| 1545 | do_scroll_view(view, lines); |
| 1546 | } |
| 1547 | |
| 1548 | /* Cursor moving */ |
| 1549 | static void |
| 1550 | move_view(struct view *view, enum request request) |
| 1551 | { |
| 1552 | int scroll_steps = 0; |
| 1553 | int steps; |
| 1554 | |
| 1555 | switch (request) { |
| 1556 | case REQ_MOVE_FIRST_LINE: |
| 1557 | steps = -view->lineno; |
| 1558 | break; |
| 1559 | |
| 1560 | case REQ_MOVE_LAST_LINE: |
| 1561 | steps = view->lines - view->lineno - 1; |
| 1562 | break; |
| 1563 | |
| 1564 | case REQ_MOVE_PAGE_UP: |
| 1565 | steps = view->height > view->lineno |
| 1566 | ? -view->lineno : -view->height; |
| 1567 | break; |
| 1568 | |
| 1569 | case REQ_MOVE_PAGE_DOWN: |
| 1570 | steps = view->lineno + view->height >= view->lines |
| 1571 | ? view->lines - view->lineno - 1 : view->height; |
| 1572 | break; |
| 1573 | |
| 1574 | case REQ_MOVE_UP: |
| 1575 | steps = -1; |
| 1576 | break; |
| 1577 | |
| 1578 | case REQ_MOVE_DOWN: |
| 1579 | steps = 1; |
| 1580 | break; |
| 1581 | |
| 1582 | default: |
| 1583 | die("request %d not handled in switch", request); |
| 1584 | } |
| 1585 | |
| 1586 | if (steps <= 0 && view->lineno == 0) { |
| 1587 | report("Cannot move beyond the first line"); |
| 1588 | return; |
| 1589 | |
| 1590 | } else if (steps >= 0 && view->lineno + 1 >= view->lines) { |
| 1591 | report("Cannot move beyond the last line"); |
| 1592 | return; |
| 1593 | } |
| 1594 | |
| 1595 | /* Move the current line */ |
| 1596 | view->lineno += steps; |
| 1597 | assert(0 <= view->lineno && view->lineno < view->lines); |
| 1598 | |
| 1599 | /* Check whether the view needs to be scrolled */ |
| 1600 | if (view->lineno < view->offset || |
| 1601 | view->lineno >= view->offset + view->height) { |
| 1602 | scroll_steps = steps; |
| 1603 | if (steps < 0 && -steps > view->offset) { |
| 1604 | scroll_steps = -view->offset; |
| 1605 | |
| 1606 | } else if (steps > 0) { |
| 1607 | if (view->lineno == view->lines - 1 && |
| 1608 | view->lines > view->height) { |
| 1609 | scroll_steps = view->lines - view->offset - 1; |
| 1610 | if (scroll_steps >= view->height) |
| 1611 | scroll_steps -= view->height - 1; |
| 1612 | } |
| 1613 | } |
| 1614 | } |
| 1615 | |
| 1616 | if (!view_is_displayed(view)) { |
| 1617 | view->offset += steps; |
| 1618 | view->ops->select(view, &view->line[view->lineno]); |
| 1619 | return; |
| 1620 | } |
| 1621 | |
| 1622 | /* Repaint the old "current" line if we be scrolling */ |
| 1623 | if (ABS(steps) < view->height) |
| 1624 | draw_view_line(view, view->lineno - steps - view->offset); |
| 1625 | |
| 1626 | if (scroll_steps) { |
| 1627 | do_scroll_view(view, scroll_steps); |
| 1628 | return; |
| 1629 | } |
| 1630 | |
| 1631 | /* Draw the current line */ |
| 1632 | draw_view_line(view, view->lineno - view->offset); |
| 1633 | |
| 1634 | redrawwin(view->win); |
| 1635 | wrefresh(view->win); |
| 1636 | report(""); |
| 1637 | } |
| 1638 | |
| 1639 | |
| 1640 | /* |
| 1641 | * Searching |
| 1642 | */ |
| 1643 | |
| 1644 | static void search_view(struct view *view, enum request request); |
| 1645 | |
| 1646 | static bool |
| 1647 | find_next_line(struct view *view, unsigned long lineno, struct line *line) |
| 1648 | { |
| 1649 | assert(view_is_displayed(view)); |
| 1650 | |
| 1651 | if (!view->ops->grep(view, line)) |
| 1652 | return FALSE; |
| 1653 | |
| 1654 | if (lineno - view->offset >= view->height) { |
| 1655 | view->offset = lineno; |
| 1656 | view->lineno = lineno; |
| 1657 | redraw_view(view); |
| 1658 | |
| 1659 | } else { |
| 1660 | unsigned long old_lineno = view->lineno - view->offset; |
| 1661 | |
| 1662 | view->lineno = lineno; |
| 1663 | draw_view_line(view, old_lineno); |
| 1664 | |
| 1665 | draw_view_line(view, view->lineno - view->offset); |
| 1666 | redrawwin(view->win); |
| 1667 | wrefresh(view->win); |
| 1668 | } |
| 1669 | |
| 1670 | report("Line %ld matches '%s'", lineno + 1, view->grep); |
| 1671 | return TRUE; |
| 1672 | } |
| 1673 | |
| 1674 | static void |
| 1675 | find_next(struct view *view, enum request request) |
| 1676 | { |
| 1677 | unsigned long lineno = view->lineno; |
| 1678 | int direction; |
| 1679 | |
| 1680 | if (!*view->grep) { |
| 1681 | if (!*opt_search) |
| 1682 | report("No previous search"); |
| 1683 | else |
| 1684 | search_view(view, request); |
| 1685 | return; |
| 1686 | } |
| 1687 | |
| 1688 | switch (request) { |
| 1689 | case REQ_SEARCH: |
| 1690 | case REQ_FIND_NEXT: |
| 1691 | direction = 1; |
| 1692 | break; |
| 1693 | |
| 1694 | case REQ_SEARCH_BACK: |
| 1695 | case REQ_FIND_PREV: |
| 1696 | direction = -1; |
| 1697 | break; |
| 1698 | |
| 1699 | default: |
| 1700 | return; |
| 1701 | } |
| 1702 | |
| 1703 | if (request == REQ_FIND_NEXT || request == REQ_FIND_PREV) |
| 1704 | lineno += direction; |
| 1705 | |
| 1706 | /* Note, lineno is unsigned long so will wrap around in which case it |
| 1707 | * will become bigger than view->lines. */ |
| 1708 | for (; lineno < view->lines; lineno += direction) { |
| 1709 | struct line *line = &view->line[lineno]; |
| 1710 | |
| 1711 | if (find_next_line(view, lineno, line)) |
| 1712 | return; |
| 1713 | } |
| 1714 | |
| 1715 | report("No match found for '%s'", view->grep); |
| 1716 | } |
| 1717 | |
| 1718 | static void |
| 1719 | search_view(struct view *view, enum request request) |
| 1720 | { |
| 1721 | int regex_err; |
| 1722 | |
| 1723 | if (view->regex) { |
| 1724 | regfree(view->regex); |
| 1725 | *view->grep = 0; |
| 1726 | } else { |
| 1727 | view->regex = calloc(1, sizeof(*view->regex)); |
| 1728 | if (!view->regex) |
| 1729 | return; |
| 1730 | } |
| 1731 | |
| 1732 | regex_err = regcomp(view->regex, opt_search, REG_EXTENDED); |
| 1733 | if (regex_err != 0) { |
| 1734 | char buf[SIZEOF_STR] = "unknown error"; |
| 1735 | |
| 1736 | regerror(regex_err, view->regex, buf, sizeof(buf)); |
| 1737 | report("Search failed: %s", buf); |
| 1738 | return; |
| 1739 | } |
| 1740 | |
| 1741 | string_copy(view->grep, opt_search); |
| 1742 | |
| 1743 | find_next(view, request); |
| 1744 | } |
| 1745 | |
| 1746 | /* |
| 1747 | * Incremental updating |
| 1748 | */ |
| 1749 | |
| 1750 | static void |
| 1751 | end_update(struct view *view) |
| 1752 | { |
| 1753 | if (!view->pipe) |
| 1754 | return; |
| 1755 | set_nonblocking_input(FALSE); |
| 1756 | if (view->pipe == stdin) |
| 1757 | fclose(view->pipe); |
| 1758 | else |
| 1759 | pclose(view->pipe); |
| 1760 | view->pipe = NULL; |
| 1761 | } |
| 1762 | |
| 1763 | static bool |
| 1764 | begin_update(struct view *view) |
| 1765 | { |
| 1766 | const char *id = view->id; |
| 1767 | |
| 1768 | if (view->pipe) |
| 1769 | end_update(view); |
| 1770 | |
| 1771 | if (opt_cmd[0]) { |
| 1772 | string_copy(view->cmd, opt_cmd); |
| 1773 | opt_cmd[0] = 0; |
| 1774 | /* When running random commands, the view ref could have become |
| 1775 | * invalid so clear it. */ |
| 1776 | view->ref[0] = 0; |
| 1777 | |
| 1778 | } else if (view == VIEW(REQ_VIEW_TREE)) { |
| 1779 | const char *format = view->cmd_env ? view->cmd_env : view->cmd_fmt; |
| 1780 | |
| 1781 | if (strcmp(view->vid, view->id)) |
| 1782 | opt_path[0] = 0; |
| 1783 | |
| 1784 | if (!string_format(view->cmd, format, id, opt_path)) |
| 1785 | return FALSE; |
| 1786 | |
| 1787 | } else { |
| 1788 | const char *format = view->cmd_env ? view->cmd_env : view->cmd_fmt; |
| 1789 | |
| 1790 | if (!string_format(view->cmd, format, id, id, id, id, id)) |
| 1791 | return FALSE; |
| 1792 | } |
| 1793 | |
| 1794 | /* Special case for the pager view. */ |
| 1795 | if (opt_pipe) { |
| 1796 | view->pipe = opt_pipe; |
| 1797 | opt_pipe = NULL; |
| 1798 | } else { |
| 1799 | view->pipe = popen(view->cmd, "r"); |
| 1800 | } |
| 1801 | |
| 1802 | if (!view->pipe) |
| 1803 | return FALSE; |
| 1804 | |
| 1805 | set_nonblocking_input(TRUE); |
| 1806 | |
| 1807 | view->offset = 0; |
| 1808 | view->lines = 0; |
| 1809 | view->lineno = 0; |
| 1810 | string_copy(view->vid, id); |
| 1811 | |
| 1812 | if (view->line) { |
| 1813 | int i; |
| 1814 | |
| 1815 | for (i = 0; i < view->lines; i++) |
| 1816 | if (view->line[i].data) |
| 1817 | free(view->line[i].data); |
| 1818 | |
| 1819 | free(view->line); |
| 1820 | view->line = NULL; |
| 1821 | } |
| 1822 | |
| 1823 | view->start_time = time(NULL); |
| 1824 | |
| 1825 | return TRUE; |
| 1826 | } |
| 1827 | |
| 1828 | static struct line * |
| 1829 | realloc_lines(struct view *view, size_t line_size) |
| 1830 | { |
| 1831 | struct line *tmp = realloc(view->line, sizeof(*view->line) * line_size); |
| 1832 | |
| 1833 | if (!tmp) |
| 1834 | return NULL; |
| 1835 | |
| 1836 | view->line = tmp; |
| 1837 | view->line_size = line_size; |
| 1838 | return view->line; |
| 1839 | } |
| 1840 | |
| 1841 | static bool |
| 1842 | update_view(struct view *view) |
| 1843 | { |
| 1844 | char in_buffer[BUFSIZ]; |
| 1845 | char out_buffer[BUFSIZ * 2]; |
| 1846 | char *line; |
| 1847 | /* The number of lines to read. If too low it will cause too much |
| 1848 | * redrawing (and possible flickering), if too high responsiveness |
| 1849 | * will suffer. */ |
| 1850 | unsigned long lines = view->height; |
| 1851 | int redraw_from = -1; |
| 1852 | |
| 1853 | if (!view->pipe) |
| 1854 | return TRUE; |
| 1855 | |
| 1856 | /* Only redraw if lines are visible. */ |
| 1857 | if (view->offset + view->height >= view->lines) |
| 1858 | redraw_from = view->lines - view->offset; |
| 1859 | |
| 1860 | /* FIXME: This is probably not perfect for backgrounded views. */ |
| 1861 | if (!realloc_lines(view, view->lines + lines)) |
| 1862 | goto alloc_error; |
| 1863 | |
| 1864 | while ((line = fgets(in_buffer, sizeof(in_buffer), view->pipe))) { |
| 1865 | size_t linelen = strlen(line); |
| 1866 | |
| 1867 | if (linelen) |
| 1868 | line[linelen - 1] = 0; |
| 1869 | |
| 1870 | if (opt_iconv != ICONV_NONE) { |
| 1871 | char *inbuf = line; |
| 1872 | size_t inlen = linelen; |
| 1873 | |
| 1874 | char *outbuf = out_buffer; |
| 1875 | size_t outlen = sizeof(out_buffer); |
| 1876 | |
| 1877 | size_t ret; |
| 1878 | |
| 1879 | ret = iconv(opt_iconv, &inbuf, &inlen, &outbuf, &outlen); |
| 1880 | if (ret != (size_t) -1) { |
| 1881 | line = out_buffer; |
| 1882 | linelen = strlen(out_buffer); |
| 1883 | } |
| 1884 | } |
| 1885 | |
| 1886 | if (!view->ops->read(view, line)) |
| 1887 | goto alloc_error; |
| 1888 | |
| 1889 | if (lines-- == 1) |
| 1890 | break; |
| 1891 | } |
| 1892 | |
| 1893 | { |
| 1894 | int digits; |
| 1895 | |
| 1896 | lines = view->lines; |
| 1897 | for (digits = 0; lines; digits++) |
| 1898 | lines /= 10; |
| 1899 | |
| 1900 | /* Keep the displayed view in sync with line number scaling. */ |
| 1901 | if (digits != view->digits) { |
| 1902 | view->digits = digits; |
| 1903 | redraw_from = 0; |
| 1904 | } |
| 1905 | } |
| 1906 | |
| 1907 | if (!view_is_displayed(view)) |
| 1908 | goto check_pipe; |
| 1909 | |
| 1910 | if (view == VIEW(REQ_VIEW_TREE)) { |
| 1911 | /* Clear the view and redraw everything since the tree sorting |
| 1912 | * might have rearranged things. */ |
| 1913 | redraw_view(view); |
| 1914 | |
| 1915 | } else if (redraw_from >= 0) { |
| 1916 | /* If this is an incremental update, redraw the previous line |
| 1917 | * since for commits some members could have changed when |
| 1918 | * loading the main view. */ |
| 1919 | if (redraw_from > 0) |
| 1920 | redraw_from--; |
| 1921 | |
| 1922 | /* Incrementally draw avoids flickering. */ |
| 1923 | redraw_view_from(view, redraw_from); |
| 1924 | } |
| 1925 | |
| 1926 | /* Update the title _after_ the redraw so that if the redraw picks up a |
| 1927 | * commit reference in view->ref it'll be available here. */ |
| 1928 | update_view_title(view); |
| 1929 | |
| 1930 | check_pipe: |
| 1931 | if (ferror(view->pipe)) { |
| 1932 | report("Failed to read: %s", strerror(errno)); |
| 1933 | goto end; |
| 1934 | |
| 1935 | } else if (feof(view->pipe)) { |
| 1936 | report(""); |
| 1937 | goto end; |
| 1938 | } |
| 1939 | |
| 1940 | return TRUE; |
| 1941 | |
| 1942 | alloc_error: |
| 1943 | report("Allocation failure"); |
| 1944 | |
| 1945 | end: |
| 1946 | view->ops->read(view, NULL); |
| 1947 | end_update(view); |
| 1948 | return FALSE; |
| 1949 | } |
| 1950 | |
| 1951 | |
| 1952 | /* |
| 1953 | * View opening |
| 1954 | */ |
| 1955 | |
| 1956 | static void open_help_view(struct view *view) |
| 1957 | { |
| 1958 | char buf[BUFSIZ]; |
| 1959 | int lines = ARRAY_SIZE(req_info) + 2; |
| 1960 | int i; |
| 1961 | |
| 1962 | if (view->lines > 0) |
| 1963 | return; |
| 1964 | |
| 1965 | for (i = 0; i < ARRAY_SIZE(req_info); i++) |
| 1966 | if (!req_info[i].request) |
| 1967 | lines++; |
| 1968 | |
| 1969 | view->line = calloc(lines, sizeof(*view->line)); |
| 1970 | if (!view->line) { |
| 1971 | report("Allocation failure"); |
| 1972 | return; |
| 1973 | } |
| 1974 | |
| 1975 | view->ops->read(view, "Quick reference for tig keybindings:"); |
| 1976 | |
| 1977 | for (i = 0; i < ARRAY_SIZE(req_info); i++) { |
| 1978 | char *key; |
| 1979 | |
| 1980 | if (!req_info[i].request) { |
| 1981 | view->ops->read(view, ""); |
| 1982 | view->ops->read(view, req_info[i].help); |
| 1983 | continue; |
| 1984 | } |
| 1985 | |
| 1986 | key = get_key(req_info[i].request); |
| 1987 | if (!string_format(buf, "%-25s %s", key, req_info[i].help)) |
| 1988 | continue; |
| 1989 | |
| 1990 | view->ops->read(view, buf); |
| 1991 | } |
| 1992 | } |
| 1993 | |
| 1994 | enum open_flags { |
| 1995 | OPEN_DEFAULT = 0, /* Use default view switching. */ |
| 1996 | OPEN_SPLIT = 1, /* Split current view. */ |
| 1997 | OPEN_BACKGROUNDED = 2, /* Backgrounded. */ |
| 1998 | OPEN_RELOAD = 4, /* Reload view even if it is the current. */ |
| 1999 | }; |
| 2000 | |
| 2001 | static void |
| 2002 | open_view(struct view *prev, enum request request, enum open_flags flags) |
| 2003 | { |
| 2004 | bool backgrounded = !!(flags & OPEN_BACKGROUNDED); |
| 2005 | bool split = !!(flags & OPEN_SPLIT); |
| 2006 | bool reload = !!(flags & OPEN_RELOAD); |
| 2007 | struct view *view = VIEW(request); |
| 2008 | int nviews = displayed_views(); |
| 2009 | struct view *base_view = display[0]; |
| 2010 | |
| 2011 | if (view == prev && nviews == 1 && !reload) { |
| 2012 | report("Already in %s view", view->name); |
| 2013 | return; |
| 2014 | } |
| 2015 | |
| 2016 | if (view == VIEW(REQ_VIEW_HELP)) { |
| 2017 | open_help_view(view); |
| 2018 | |
| 2019 | } else if ((reload || strcmp(view->vid, view->id)) && |
| 2020 | !begin_update(view)) { |
| 2021 | report("Failed to load %s view", view->name); |
| 2022 | return; |
| 2023 | } |
| 2024 | |
| 2025 | if (split) { |
| 2026 | display[1] = view; |
| 2027 | if (!backgrounded) |
| 2028 | current_view = 1; |
| 2029 | } else { |
| 2030 | /* Maximize the current view. */ |
| 2031 | memset(display, 0, sizeof(display)); |
| 2032 | current_view = 0; |
| 2033 | display[current_view] = view; |
| 2034 | } |
| 2035 | |
| 2036 | /* Resize the view when switching between split- and full-screen, |
| 2037 | * or when switching between two different full-screen views. */ |
| 2038 | if (nviews != displayed_views() || |
| 2039 | (nviews == 1 && base_view != display[0])) |
| 2040 | resize_display(); |
| 2041 | |
| 2042 | if (split && prev->lineno - prev->offset >= prev->height) { |
| 2043 | /* Take the title line into account. */ |
| 2044 | int lines = prev->lineno - prev->offset - prev->height + 1; |
| 2045 | |
| 2046 | /* Scroll the view that was split if the current line is |
| 2047 | * outside the new limited view. */ |
| 2048 | do_scroll_view(prev, lines); |
| 2049 | } |
| 2050 | |
| 2051 | if (prev && view != prev) { |
| 2052 | if (split && !backgrounded) { |
| 2053 | /* "Blur" the previous view. */ |
| 2054 | update_view_title(prev); |
| 2055 | } |
| 2056 | |
| 2057 | view->parent = prev; |
| 2058 | } |
| 2059 | |
| 2060 | if (view->pipe && view->lines == 0) { |
| 2061 | /* Clear the old view and let the incremental updating refill |
| 2062 | * the screen. */ |
| 2063 | wclear(view->win); |
| 2064 | report(""); |
| 2065 | } else { |
| 2066 | redraw_view(view); |
| 2067 | report(""); |
| 2068 | } |
| 2069 | |
| 2070 | /* If the view is backgrounded the above calls to report() |
| 2071 | * won't redraw the view title. */ |
| 2072 | if (backgrounded) |
| 2073 | update_view_title(view); |
| 2074 | } |
| 2075 | |
| 2076 | |
| 2077 | /* |
| 2078 | * User request switch noodle |
| 2079 | */ |
| 2080 | |
| 2081 | static int |
| 2082 | view_driver(struct view *view, enum request request) |
| 2083 | { |
| 2084 | int i; |
| 2085 | |
| 2086 | switch (request) { |
| 2087 | case REQ_MOVE_UP: |
| 2088 | case REQ_MOVE_DOWN: |
| 2089 | case REQ_MOVE_PAGE_UP: |
| 2090 | case REQ_MOVE_PAGE_DOWN: |
| 2091 | case REQ_MOVE_FIRST_LINE: |
| 2092 | case REQ_MOVE_LAST_LINE: |
| 2093 | move_view(view, request); |
| 2094 | break; |
| 2095 | |
| 2096 | case REQ_SCROLL_LINE_DOWN: |
| 2097 | case REQ_SCROLL_LINE_UP: |
| 2098 | case REQ_SCROLL_PAGE_DOWN: |
| 2099 | case REQ_SCROLL_PAGE_UP: |
| 2100 | scroll_view(view, request); |
| 2101 | break; |
| 2102 | |
| 2103 | case REQ_VIEW_BLOB: |
| 2104 | if (!ref_blob[0]) { |
| 2105 | report("No file chosen, press 't' to open tree view"); |
| 2106 | break; |
| 2107 | } |
| 2108 | /* Fall-through */ |
| 2109 | case REQ_VIEW_MAIN: |
| 2110 | case REQ_VIEW_DIFF: |
| 2111 | case REQ_VIEW_LOG: |
| 2112 | case REQ_VIEW_TREE: |
| 2113 | case REQ_VIEW_HELP: |
| 2114 | case REQ_VIEW_PAGER: |
| 2115 | open_view(view, request, OPEN_DEFAULT); |
| 2116 | break; |
| 2117 | |
| 2118 | case REQ_NEXT: |
| 2119 | case REQ_PREVIOUS: |
| 2120 | request = request == REQ_NEXT ? REQ_MOVE_DOWN : REQ_MOVE_UP; |
| 2121 | |
| 2122 | if ((view == VIEW(REQ_VIEW_DIFF) && |
| 2123 | view->parent == VIEW(REQ_VIEW_MAIN)) || |
| 2124 | (view == VIEW(REQ_VIEW_BLOB) && |
| 2125 | view->parent == VIEW(REQ_VIEW_TREE))) { |
| 2126 | view = view->parent; |
| 2127 | move_view(view, request); |
| 2128 | if (view_is_displayed(view)) |
| 2129 | update_view_title(view); |
| 2130 | } else { |
| 2131 | move_view(view, request); |
| 2132 | break; |
| 2133 | } |
| 2134 | /* Fall-through */ |
| 2135 | |
| 2136 | case REQ_ENTER: |
| 2137 | if (!view->lines) { |
| 2138 | report("Nothing to enter"); |
| 2139 | break; |
| 2140 | } |
| 2141 | return view->ops->enter(view, &view->line[view->lineno]); |
| 2142 | |
| 2143 | case REQ_VIEW_NEXT: |
| 2144 | { |
| 2145 | int nviews = displayed_views(); |
| 2146 | int next_view = (current_view + 1) % nviews; |
| 2147 | |
| 2148 | if (next_view == current_view) { |
| 2149 | report("Only one view is displayed"); |
| 2150 | break; |
| 2151 | } |
| 2152 | |
| 2153 | current_view = next_view; |
| 2154 | /* Blur out the title of the previous view. */ |
| 2155 | update_view_title(view); |
| 2156 | report(""); |
| 2157 | break; |
| 2158 | } |
| 2159 | case REQ_TOGGLE_LINENO: |
| 2160 | opt_line_number = !opt_line_number; |
| 2161 | redraw_display(); |
| 2162 | break; |
| 2163 | |
| 2164 | case REQ_TOGGLE_REV_GRAPH: |
| 2165 | opt_rev_graph = !opt_rev_graph; |
| 2166 | redraw_display(); |
| 2167 | break; |
| 2168 | |
| 2169 | case REQ_PROMPT: |
| 2170 | /* Always reload^Wrerun commands from the prompt. */ |
| 2171 | open_view(view, opt_request, OPEN_RELOAD); |
| 2172 | break; |
| 2173 | |
| 2174 | case REQ_SEARCH: |
| 2175 | case REQ_SEARCH_BACK: |
| 2176 | search_view(view, request); |
| 2177 | break; |
| 2178 | |
| 2179 | case REQ_FIND_NEXT: |
| 2180 | case REQ_FIND_PREV: |
| 2181 | find_next(view, request); |
| 2182 | break; |
| 2183 | |
| 2184 | case REQ_STOP_LOADING: |
| 2185 | for (i = 0; i < ARRAY_SIZE(views); i++) { |
| 2186 | view = &views[i]; |
| 2187 | if (view->pipe) |
| 2188 | report("Stopped loading the %s view", view->name), |
| 2189 | end_update(view); |
| 2190 | } |
| 2191 | break; |
| 2192 | |
| 2193 | case REQ_SHOW_VERSION: |
| 2194 | report("%s (built %s)", VERSION, __DATE__); |
| 2195 | return TRUE; |
| 2196 | |
| 2197 | case REQ_SCREEN_RESIZE: |
| 2198 | resize_display(); |
| 2199 | /* Fall-through */ |
| 2200 | case REQ_SCREEN_REDRAW: |
| 2201 | redraw_display(); |
| 2202 | break; |
| 2203 | |
| 2204 | case REQ_NONE: |
| 2205 | doupdate(); |
| 2206 | return TRUE; |
| 2207 | |
| 2208 | case REQ_VIEW_CLOSE: |
| 2209 | /* XXX: Mark closed views by letting view->parent point to the |
| 2210 | * view itself. Parents to closed view should never be |
| 2211 | * followed. */ |
| 2212 | if (view->parent && |
| 2213 | view->parent->parent != view->parent) { |
| 2214 | memset(display, 0, sizeof(display)); |
| 2215 | current_view = 0; |
| 2216 | display[current_view] = view->parent; |
| 2217 | view->parent = view; |
| 2218 | resize_display(); |
| 2219 | redraw_display(); |
| 2220 | break; |
| 2221 | } |
| 2222 | /* Fall-through */ |
| 2223 | case REQ_QUIT: |
| 2224 | return FALSE; |
| 2225 | |
| 2226 | default: |
| 2227 | /* An unknown key will show most commonly used commands. */ |
| 2228 | report("Unknown key, press 'h' for help"); |
| 2229 | return TRUE; |
| 2230 | } |
| 2231 | |
| 2232 | return TRUE; |
| 2233 | } |
| 2234 | |
| 2235 | |
| 2236 | /* |
| 2237 | * Pager backend |
| 2238 | */ |
| 2239 | |
| 2240 | static bool |
| 2241 | pager_draw(struct view *view, struct line *line, unsigned int lineno, bool selected) |
| 2242 | { |
| 2243 | char *text = line->data; |
| 2244 | enum line_type type = line->type; |
| 2245 | int textlen = strlen(text); |
| 2246 | int attr; |
| 2247 | |
| 2248 | wmove(view->win, lineno, 0); |
| 2249 | |
| 2250 | if (selected) { |
| 2251 | type = LINE_CURSOR; |
| 2252 | wchgat(view->win, -1, 0, type, NULL); |
| 2253 | } |
| 2254 | |
| 2255 | attr = get_line_attr(type); |
| 2256 | wattrset(view->win, attr); |
| 2257 | |
| 2258 | if (opt_line_number || opt_tab_size < TABSIZE) { |
| 2259 | static char spaces[] = " "; |
| 2260 | int col_offset = 0, col = 0; |
| 2261 | |
| 2262 | if (opt_line_number) { |
| 2263 | unsigned long real_lineno = view->offset + lineno + 1; |
| 2264 | |
| 2265 | if (real_lineno == 1 || |
| 2266 | (real_lineno % opt_num_interval) == 0) { |
| 2267 | wprintw(view->win, "%.*d", view->digits, real_lineno); |
| 2268 | |
| 2269 | } else { |
| 2270 | waddnstr(view->win, spaces, |
| 2271 | MIN(view->digits, STRING_SIZE(spaces))); |
| 2272 | } |
| 2273 | waddstr(view->win, ": "); |
| 2274 | col_offset = view->digits + 2; |
| 2275 | } |
| 2276 | |
| 2277 | while (text && col_offset + col < view->width) { |
| 2278 | int cols_max = view->width - col_offset - col; |
| 2279 | char *pos = text; |
| 2280 | int cols; |
| 2281 | |
| 2282 | if (*text == '\t') { |
| 2283 | text++; |
| 2284 | assert(sizeof(spaces) > TABSIZE); |
| 2285 | pos = spaces; |
| 2286 | cols = opt_tab_size - (col % opt_tab_size); |
| 2287 | |
| 2288 | } else { |
| 2289 | text = strchr(text, '\t'); |
| 2290 | cols = line ? text - pos : strlen(pos); |
| 2291 | } |
| 2292 | |
| 2293 | waddnstr(view->win, pos, MIN(cols, cols_max)); |
| 2294 | col += cols; |
| 2295 | } |
| 2296 | |
| 2297 | } else { |
| 2298 | int col = 0, pos = 0; |
| 2299 | |
| 2300 | for (; pos < textlen && col < view->width; pos++, col++) |
| 2301 | if (text[pos] == '\t') |
| 2302 | col += TABSIZE - (col % TABSIZE) - 1; |
| 2303 | |
| 2304 | waddnstr(view->win, text, pos); |
| 2305 | } |
| 2306 | |
| 2307 | return TRUE; |
| 2308 | } |
| 2309 | |
| 2310 | static bool |
| 2311 | add_describe_ref(char *buf, size_t *bufpos, char *commit_id, const char *sep) |
| 2312 | { |
| 2313 | char refbuf[SIZEOF_STR]; |
| 2314 | char *ref = NULL; |
| 2315 | FILE *pipe; |
| 2316 | |
| 2317 | if (!string_format(refbuf, "git describe %s", commit_id)) |
| 2318 | return TRUE; |
| 2319 | |
| 2320 | pipe = popen(refbuf, "r"); |
| 2321 | if (!pipe) |
| 2322 | return TRUE; |
| 2323 | |
| 2324 | if ((ref = fgets(refbuf, sizeof(refbuf), pipe))) |
| 2325 | ref = chomp_string(ref); |
| 2326 | pclose(pipe); |
| 2327 | |
| 2328 | if (!ref || !*ref) |
| 2329 | return TRUE; |
| 2330 | |
| 2331 | /* This is the only fatal call, since it can "corrupt" the buffer. */ |
| 2332 | if (!string_nformat(buf, SIZEOF_STR, bufpos, "%s%s", sep, ref)) |
| 2333 | return FALSE; |
| 2334 | |
| 2335 | return TRUE; |
| 2336 | } |
| 2337 | |
| 2338 | static void |
| 2339 | add_pager_refs(struct view *view, struct line *line) |
| 2340 | { |
| 2341 | char buf[SIZEOF_STR]; |
| 2342 | char *commit_id = line->data + STRING_SIZE("commit "); |
| 2343 | struct ref **refs; |
| 2344 | size_t bufpos = 0, refpos = 0; |
| 2345 | const char *sep = "Refs: "; |
| 2346 | bool is_tag = FALSE; |
| 2347 | |
| 2348 | assert(line->type == LINE_COMMIT); |
| 2349 | |
| 2350 | refs = get_refs(commit_id); |
| 2351 | if (!refs) { |
| 2352 | if (view == VIEW(REQ_VIEW_DIFF)) |
| 2353 | goto try_add_describe_ref; |
| 2354 | return; |
| 2355 | } |
| 2356 | |
| 2357 | do { |
| 2358 | struct ref *ref = refs[refpos]; |
| 2359 | char *fmt = ref->tag ? "%s[%s]" : "%s%s"; |
| 2360 | |
| 2361 | if (!string_format_from(buf, &bufpos, fmt, sep, ref->name)) |
| 2362 | return; |
| 2363 | sep = ", "; |
| 2364 | if (ref->tag) |
| 2365 | is_tag = TRUE; |
| 2366 | } while (refs[refpos++]->next); |
| 2367 | |
| 2368 | if (!is_tag && view == VIEW(REQ_VIEW_DIFF)) { |
| 2369 | try_add_describe_ref: |
| 2370 | /* Add <tag>-g<commit_id> "fake" reference. */ |
| 2371 | if (!add_describe_ref(buf, &bufpos, commit_id, sep)) |
| 2372 | return; |
| 2373 | } |
| 2374 | |
| 2375 | if (bufpos == 0) |
| 2376 | return; |
| 2377 | |
| 2378 | if (!realloc_lines(view, view->line_size + 1)) |
| 2379 | return; |
| 2380 | |
| 2381 | line = &view->line[view->lines]; |
| 2382 | line->data = strdup(buf); |
| 2383 | if (!line->data) |
| 2384 | return; |
| 2385 | |
| 2386 | line->type = LINE_PP_REFS; |
| 2387 | view->lines++; |
| 2388 | } |
| 2389 | |
| 2390 | static bool |
| 2391 | pager_read(struct view *view, char *data) |
| 2392 | { |
| 2393 | struct line *line = &view->line[view->lines]; |
| 2394 | |
| 2395 | if (!data) |
| 2396 | return TRUE; |
| 2397 | |
| 2398 | line->data = strdup(data); |
| 2399 | if (!line->data) |
| 2400 | return FALSE; |
| 2401 | |
| 2402 | line->type = get_line_type(line->data); |
| 2403 | view->lines++; |
| 2404 | |
| 2405 | if (line->type == LINE_COMMIT && |
| 2406 | (view == VIEW(REQ_VIEW_DIFF) || |
| 2407 | view == VIEW(REQ_VIEW_LOG))) |
| 2408 | add_pager_refs(view, line); |
| 2409 | |
| 2410 | return TRUE; |
| 2411 | } |
| 2412 | |
| 2413 | static bool |
| 2414 | pager_enter(struct view *view, struct line *line) |
| 2415 | { |
| 2416 | int split = 0; |
| 2417 | |
| 2418 | if (line->type == LINE_COMMIT && |
| 2419 | (view == VIEW(REQ_VIEW_LOG) || |
| 2420 | view == VIEW(REQ_VIEW_PAGER))) { |
| 2421 | open_view(view, REQ_VIEW_DIFF, OPEN_SPLIT); |
| 2422 | split = 1; |
| 2423 | } |
| 2424 | |
| 2425 | /* Always scroll the view even if it was split. That way |
| 2426 | * you can use Enter to scroll through the log view and |
| 2427 | * split open each commit diff. */ |
| 2428 | scroll_view(view, REQ_SCROLL_LINE_DOWN); |
| 2429 | |
| 2430 | /* FIXME: A minor workaround. Scrolling the view will call report("") |
| 2431 | * but if we are scrolling a non-current view this won't properly |
| 2432 | * update the view title. */ |
| 2433 | if (split) |
| 2434 | update_view_title(view); |
| 2435 | |
| 2436 | return TRUE; |
| 2437 | } |
| 2438 | |
| 2439 | static bool |
| 2440 | pager_grep(struct view *view, struct line *line) |
| 2441 | { |
| 2442 | regmatch_t pmatch; |
| 2443 | char *text = line->data; |
| 2444 | |
| 2445 | if (!*text) |
| 2446 | return FALSE; |
| 2447 | |
| 2448 | if (regexec(view->regex, text, 1, &pmatch, 0) == REG_NOMATCH) |
| 2449 | return FALSE; |
| 2450 | |
| 2451 | return TRUE; |
| 2452 | } |
| 2453 | |
| 2454 | static void |
| 2455 | pager_select(struct view *view, struct line *line) |
| 2456 | { |
| 2457 | if (line->type == LINE_COMMIT) { |
| 2458 | char *text = line->data; |
| 2459 | |
| 2460 | string_copy(view->ref, text + STRING_SIZE("commit ")); |
| 2461 | string_copy(ref_commit, view->ref); |
| 2462 | } |
| 2463 | } |
| 2464 | |
| 2465 | static struct view_ops pager_ops = { |
| 2466 | "line", |
| 2467 | pager_draw, |
| 2468 | pager_read, |
| 2469 | pager_enter, |
| 2470 | pager_grep, |
| 2471 | pager_select, |
| 2472 | }; |
| 2473 | |
| 2474 | |
| 2475 | /* |
| 2476 | * Tree backend |
| 2477 | */ |
| 2478 | |
| 2479 | /* Parse output from git-ls-tree(1): |
| 2480 | * |
| 2481 | * 100644 blob fb0e31ea6cc679b7379631188190e975f5789c26 Makefile |
| 2482 | * 100644 blob 5304ca4260aaddaee6498f9630e7d471b8591ea6 README |
| 2483 | * 100644 blob f931e1d229c3e185caad4449bf5b66ed72462657 tig.c |
| 2484 | * 100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38 web.conf |
| 2485 | */ |
| 2486 | |
| 2487 | #define SIZEOF_TREE_ATTR \ |
| 2488 | STRING_SIZE("100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38\t") |
| 2489 | |
| 2490 | #define TREE_UP_FORMAT "040000 tree %s\t.." |
| 2491 | |
| 2492 | static int |
| 2493 | tree_compare_entry(enum line_type type1, char *name1, |
| 2494 | enum line_type type2, char *name2) |
| 2495 | { |
| 2496 | if (type1 != type2) { |
| 2497 | if (type1 == LINE_TREE_DIR) |
| 2498 | return -1; |
| 2499 | return 1; |
| 2500 | } |
| 2501 | |
| 2502 | return strcmp(name1, name2); |
| 2503 | } |
| 2504 | |
| 2505 | static bool |
| 2506 | tree_read(struct view *view, char *text) |
| 2507 | { |
| 2508 | size_t textlen = text ? strlen(text) : 0; |
| 2509 | char buf[SIZEOF_STR]; |
| 2510 | unsigned long pos; |
| 2511 | enum line_type type; |
| 2512 | bool first_read = view->lines == 0; |
| 2513 | |
| 2514 | if (textlen <= SIZEOF_TREE_ATTR) |
| 2515 | return FALSE; |
| 2516 | |
| 2517 | type = text[STRING_SIZE("100644 ")] == 't' |
| 2518 | ? LINE_TREE_DIR : LINE_TREE_FILE; |
| 2519 | |
| 2520 | if (first_read) { |
| 2521 | /* Add path info line */ |
| 2522 | if (string_format(buf, "Directory path /%s", opt_path) && |
| 2523 | realloc_lines(view, view->line_size + 1) && |
| 2524 | pager_read(view, buf)) |
| 2525 | view->line[view->lines - 1].type = LINE_DEFAULT; |
| 2526 | else |
| 2527 | return FALSE; |
| 2528 | |
| 2529 | /* Insert "link" to parent directory. */ |
| 2530 | if (*opt_path && |
| 2531 | string_format(buf, TREE_UP_FORMAT, view->ref) && |
| 2532 | realloc_lines(view, view->line_size + 1) && |
| 2533 | pager_read(view, buf)) |
| 2534 | view->line[view->lines - 1].type = LINE_TREE_DIR; |
| 2535 | else if (*opt_path) |
| 2536 | return FALSE; |
| 2537 | } |
| 2538 | |
| 2539 | /* Strip the path part ... */ |
| 2540 | if (*opt_path) { |
| 2541 | size_t pathlen = textlen - SIZEOF_TREE_ATTR; |
| 2542 | size_t striplen = strlen(opt_path); |
| 2543 | char *path = text + SIZEOF_TREE_ATTR; |
| 2544 | |
| 2545 | if (pathlen > striplen) |
| 2546 | memmove(path, path + striplen, |
| 2547 | pathlen - striplen + 1); |
| 2548 | } |
| 2549 | |
| 2550 | /* Skip "Directory ..." and ".." line. */ |
| 2551 | for (pos = 1 + !!*opt_path; pos < view->lines; pos++) { |
| 2552 | struct line *line = &view->line[pos]; |
| 2553 | char *path1 = ((char *) line->data) + SIZEOF_TREE_ATTR; |
| 2554 | char *path2 = text + SIZEOF_TREE_ATTR; |
| 2555 | int cmp = tree_compare_entry(line->type, path1, type, path2); |
| 2556 | |
| 2557 | if (cmp <= 0) |
| 2558 | continue; |
| 2559 | |
| 2560 | text = strdup(text); |
| 2561 | if (!text) |
| 2562 | return FALSE; |
| 2563 | |
| 2564 | if (view->lines > pos) |
| 2565 | memmove(&view->line[pos + 1], &view->line[pos], |
| 2566 | (view->lines - pos) * sizeof(*line)); |
| 2567 | |
| 2568 | line = &view->line[pos]; |
| 2569 | line->data = text; |
| 2570 | line->type = type; |
| 2571 | view->lines++; |
| 2572 | return TRUE; |
| 2573 | } |
| 2574 | |
| 2575 | if (!pager_read(view, text)) |
| 2576 | return FALSE; |
| 2577 | |
| 2578 | /* Move the current line to the first tree entry. */ |
| 2579 | if (first_read) |
| 2580 | view->lineno++; |
| 2581 | |
| 2582 | view->line[view->lines - 1].type = type; |
| 2583 | return TRUE; |
| 2584 | } |
| 2585 | |
| 2586 | static bool |
| 2587 | tree_enter(struct view *view, struct line *line) |
| 2588 | { |
| 2589 | enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT; |
| 2590 | enum request request; |
| 2591 | |
| 2592 | switch (line->type) { |
| 2593 | case LINE_TREE_DIR: |
| 2594 | /* Depending on whether it is a subdir or parent (updir?) link |
| 2595 | * mangle the path buffer. */ |
| 2596 | if (line == &view->line[1] && *opt_path) { |
| 2597 | size_t path_len = strlen(opt_path); |
| 2598 | char *dirsep = opt_path + path_len - 1; |
| 2599 | |
| 2600 | while (dirsep > opt_path && dirsep[-1] != '/') |
| 2601 | dirsep--; |
| 2602 | |
| 2603 | dirsep[0] = 0; |
| 2604 | |
| 2605 | } else { |
| 2606 | size_t pathlen = strlen(opt_path); |
| 2607 | size_t origlen = pathlen; |
| 2608 | char *data = line->data; |
| 2609 | char *basename = data + SIZEOF_TREE_ATTR; |
| 2610 | |
| 2611 | if (!string_format_from(opt_path, &pathlen, "%s/", basename)) { |
| 2612 | opt_path[origlen] = 0; |
| 2613 | return TRUE; |
| 2614 | } |
| 2615 | } |
| 2616 | |
| 2617 | /* Trees and subtrees share the same ID, so they are not not |
| 2618 | * unique like blobs. */ |
| 2619 | flags |= OPEN_RELOAD; |
| 2620 | request = REQ_VIEW_TREE; |
| 2621 | break; |
| 2622 | |
| 2623 | case LINE_TREE_FILE: |
| 2624 | request = REQ_VIEW_BLOB; |
| 2625 | break; |
| 2626 | |
| 2627 | default: |
| 2628 | return TRUE; |
| 2629 | } |
| 2630 | |
| 2631 | open_view(view, request, flags); |
| 2632 | |
| 2633 | return TRUE; |
| 2634 | } |
| 2635 | |
| 2636 | static void |
| 2637 | tree_select(struct view *view, struct line *line) |
| 2638 | { |
| 2639 | char *text = line->data; |
| 2640 | |
| 2641 | text += STRING_SIZE("100644 blob "); |
| 2642 | |
| 2643 | if (line->type == LINE_TREE_FILE) { |
| 2644 | string_ncopy(ref_blob, text, 40); |
| 2645 | /* Also update the blob view's ref, since all there must always |
| 2646 | * be in sync. */ |
| 2647 | string_copy(VIEW(REQ_VIEW_BLOB)->ref, ref_blob); |
| 2648 | |
| 2649 | } else if (line->type != LINE_TREE_DIR) { |
| 2650 | return; |
| 2651 | } |
| 2652 | |
| 2653 | string_ncopy(view->ref, text, 40); |
| 2654 | } |
| 2655 | |
| 2656 | static struct view_ops tree_ops = { |
| 2657 | "file", |
| 2658 | pager_draw, |
| 2659 | tree_read, |
| 2660 | tree_enter, |
| 2661 | pager_grep, |
| 2662 | tree_select, |
| 2663 | }; |
| 2664 | |
| 2665 | static bool |
| 2666 | blob_read(struct view *view, char *line) |
| 2667 | { |
| 2668 | bool state = pager_read(view, line); |
| 2669 | |
| 2670 | if (state == TRUE) |
| 2671 | view->line[view->lines - 1].type = LINE_DEFAULT; |
| 2672 | |
| 2673 | return state; |
| 2674 | } |
| 2675 | |
| 2676 | static struct view_ops blob_ops = { |
| 2677 | "line", |
| 2678 | pager_draw, |
| 2679 | blob_read, |
| 2680 | pager_enter, |
| 2681 | pager_grep, |
| 2682 | pager_select, |
| 2683 | }; |
| 2684 | |
| 2685 | |
| 2686 | /* |
| 2687 | * Revision graph |
| 2688 | */ |
| 2689 | |
| 2690 | struct commit { |
| 2691 | char id[SIZEOF_REV]; /* SHA1 ID. */ |
| 2692 | char title[75]; /* First line of the commit message. */ |
| 2693 | char author[75]; /* Author of the commit. */ |
| 2694 | struct tm time; /* Date from the author ident. */ |
| 2695 | struct ref **refs; /* Repository references. */ |
| 2696 | chtype graph[SIZEOF_REVGRAPH]; /* Ancestry chain graphics. */ |
| 2697 | size_t graph_size; /* The width of the graph array. */ |
| 2698 | }; |
| 2699 | |
| 2700 | /* Size of rev graph with no "padding" columns */ |
| 2701 | #define SIZEOF_REVITEMS (SIZEOF_REVGRAPH - (SIZEOF_REVGRAPH / 2)) |
| 2702 | |
| 2703 | struct rev_graph { |
| 2704 | struct rev_graph *prev, *next, *parents; |
| 2705 | char rev[SIZEOF_REVITEMS][SIZEOF_REV]; |
| 2706 | size_t size; |
| 2707 | struct commit *commit; |
| 2708 | size_t pos; |
| 2709 | }; |
| 2710 | |
| 2711 | /* Parents of the commit being visualized. */ |
| 2712 | static struct rev_graph graph_parents[4]; |
| 2713 | |
| 2714 | /* The current stack of revisions on the graph. */ |
| 2715 | static struct rev_graph graph_stacks[4] = { |
| 2716 | { &graph_stacks[3], &graph_stacks[1], &graph_parents[0] }, |
| 2717 | { &graph_stacks[0], &graph_stacks[2], &graph_parents[1] }, |
| 2718 | { &graph_stacks[1], &graph_stacks[3], &graph_parents[2] }, |
| 2719 | { &graph_stacks[2], &graph_stacks[0], &graph_parents[3] }, |
| 2720 | }; |
| 2721 | |
| 2722 | static inline bool |
| 2723 | graph_parent_is_merge(struct rev_graph *graph) |
| 2724 | { |
| 2725 | return graph->parents->size > 1; |
| 2726 | } |
| 2727 | |
| 2728 | static inline void |
| 2729 | append_to_rev_graph(struct rev_graph *graph, chtype symbol) |
| 2730 | { |
| 2731 | struct commit *commit = graph->commit; |
| 2732 | |
| 2733 | if (commit->graph_size < ARRAY_SIZE(commit->graph) - 1) |
| 2734 | commit->graph[commit->graph_size++] = symbol; |
| 2735 | } |
| 2736 | |
| 2737 | static void |
| 2738 | done_rev_graph(struct rev_graph *graph) |
| 2739 | { |
| 2740 | if (graph_parent_is_merge(graph) && |
| 2741 | graph->pos < graph->size - 1 && |
| 2742 | graph->next->size == graph->size + graph->parents->size - 1) { |
| 2743 | size_t i = graph->pos + graph->parents->size - 1; |
| 2744 | |
| 2745 | graph->commit->graph_size = i * 2; |
| 2746 | while (i < graph->next->size - 1) { |
| 2747 | append_to_rev_graph(graph, ' '); |
| 2748 | append_to_rev_graph(graph, '\\'); |
| 2749 | i++; |
| 2750 | } |
| 2751 | } |
| 2752 | |
| 2753 | graph->size = graph->pos = 0; |
| 2754 | graph->commit = NULL; |
| 2755 | memset(graph->parents, 0, sizeof(*graph->parents)); |
| 2756 | } |
| 2757 | |
| 2758 | static void |
| 2759 | push_rev_graph(struct rev_graph *graph, char *parent) |
| 2760 | { |
| 2761 | int i; |
| 2762 | |
| 2763 | /* "Collapse" duplicate parents lines. |
| 2764 | * |
| 2765 | * FIXME: This needs to also update update the drawn graph but |
| 2766 | * for now it just serves as a method for pruning graph lines. */ |
| 2767 | for (i = 0; i < graph->size; i++) |
| 2768 | if (!strncmp(graph->rev[i], parent, SIZEOF_REV)) |
| 2769 | return; |
| 2770 | |
| 2771 | if (graph->size < SIZEOF_REVITEMS) { |
| 2772 | string_ncopy(graph->rev[graph->size++], parent, SIZEOF_REV); |
| 2773 | } |
| 2774 | } |
| 2775 | |
| 2776 | static chtype |
| 2777 | get_rev_graph_symbol(struct rev_graph *graph) |
| 2778 | { |
| 2779 | chtype symbol; |
| 2780 | |
| 2781 | if (graph->parents->size == 0) |
| 2782 | symbol = REVGRAPH_INIT; |
| 2783 | else if (graph_parent_is_merge(graph)) |
| 2784 | symbol = REVGRAPH_MERGE; |
| 2785 | else if (graph->pos >= graph->size) |
| 2786 | symbol = REVGRAPH_BRANCH; |
| 2787 | else |
| 2788 | symbol = REVGRAPH_COMMIT; |
| 2789 | |
| 2790 | return symbol; |
| 2791 | } |
| 2792 | |
| 2793 | static void |
| 2794 | draw_rev_graph(struct rev_graph *graph) |
| 2795 | { |
| 2796 | struct rev_filler { |
| 2797 | chtype separator, line; |
| 2798 | }; |
| 2799 | enum { DEFAULT, RSHARP, RDIAG, LDIAG }; |
| 2800 | static struct rev_filler fillers[] = { |
| 2801 | { ' ', REVGRAPH_LINE }, |
| 2802 | { '`', '.' }, |
| 2803 | { '\'', ' ' }, |
| 2804 | { '/', ' ' }, |
| 2805 | }; |
| 2806 | chtype symbol = get_rev_graph_symbol(graph); |
| 2807 | struct rev_filler *filler; |
| 2808 | size_t i; |
| 2809 | |
| 2810 | filler = &fillers[DEFAULT]; |
| 2811 | |
| 2812 | for (i = 0; i < graph->pos; i++) { |
| 2813 | append_to_rev_graph(graph, filler->line); |
| 2814 | if (graph_parent_is_merge(graph->prev) && |
| 2815 | graph->prev->pos == i) |
| 2816 | filler = &fillers[RSHARP]; |
| 2817 | |
| 2818 | append_to_rev_graph(graph, filler->separator); |
| 2819 | } |
| 2820 | |
| 2821 | /* Place the symbol for this revision. */ |
| 2822 | append_to_rev_graph(graph, symbol); |
| 2823 | |
| 2824 | if (graph->prev->size > graph->size) |
| 2825 | filler = &fillers[RDIAG]; |
| 2826 | else |
| 2827 | filler = &fillers[DEFAULT]; |
| 2828 | |
| 2829 | i++; |
| 2830 | |
| 2831 | for (; i < graph->size; i++) { |
| 2832 | append_to_rev_graph(graph, filler->separator); |
| 2833 | append_to_rev_graph(graph, filler->line); |
| 2834 | if (graph_parent_is_merge(graph->prev) && |
| 2835 | i < graph->prev->pos + graph->parents->size) |
| 2836 | filler = &fillers[RSHARP]; |
| 2837 | if (graph->prev->size > graph->size) |
| 2838 | filler = &fillers[LDIAG]; |
| 2839 | } |
| 2840 | |
| 2841 | if (graph->prev->size > graph->size) { |
| 2842 | append_to_rev_graph(graph, filler->separator); |
| 2843 | if (filler->line != ' ') |
| 2844 | append_to_rev_graph(graph, filler->line); |
| 2845 | } |
| 2846 | } |
| 2847 | |
| 2848 | /* Prepare the next rev graph */ |
| 2849 | static void |
| 2850 | prepare_rev_graph(struct rev_graph *graph) |
| 2851 | { |
| 2852 | size_t i; |
| 2853 | |
| 2854 | /* First, traverse all lines of revisions up to the active one. */ |
| 2855 | for (graph->pos = 0; graph->pos < graph->size; graph->pos++) { |
| 2856 | if (!strcmp(graph->rev[graph->pos], graph->commit->id)) |
| 2857 | break; |
| 2858 | |
| 2859 | push_rev_graph(graph->next, graph->rev[graph->pos]); |
| 2860 | } |
| 2861 | |
| 2862 | /* Interleave the new revision parent(s). */ |
| 2863 | for (i = 0; i < graph->parents->size; i++) |
| 2864 | push_rev_graph(graph->next, graph->parents->rev[i]); |
| 2865 | |
| 2866 | /* Lastly, put any remaining revisions. */ |
| 2867 | for (i = graph->pos + 1; i < graph->size; i++) |
| 2868 | push_rev_graph(graph->next, graph->rev[i]); |
| 2869 | } |
| 2870 | |
| 2871 | static void |
| 2872 | update_rev_graph(struct rev_graph *graph) |
| 2873 | { |
| 2874 | /* If this is the finalizing update ... */ |
| 2875 | if (graph->commit) |
| 2876 | prepare_rev_graph(graph); |
| 2877 | |
| 2878 | /* Graph visualization needs a one rev look-ahead, |
| 2879 | * so the first update doesn't visualize anything. */ |
| 2880 | if (!graph->prev->commit) |
| 2881 | return; |
| 2882 | |
| 2883 | draw_rev_graph(graph->prev); |
| 2884 | done_rev_graph(graph->prev->prev); |
| 2885 | } |
| 2886 | |
| 2887 | |
| 2888 | /* |
| 2889 | * Main view backend |
| 2890 | */ |
| 2891 | |
| 2892 | static bool |
| 2893 | main_draw(struct view *view, struct line *line, unsigned int lineno, bool selected) |
| 2894 | { |
| 2895 | char buf[DATE_COLS + 1]; |
| 2896 | struct commit *commit = line->data; |
| 2897 | enum line_type type; |
| 2898 | int col = 0; |
| 2899 | size_t timelen; |
| 2900 | size_t authorlen; |
| 2901 | int trimmed = 1; |
| 2902 | |
| 2903 | if (!*commit->author) |
| 2904 | return FALSE; |
| 2905 | |
| 2906 | wmove(view->win, lineno, col); |
| 2907 | |
| 2908 | if (selected) { |
| 2909 | type = LINE_CURSOR; |
| 2910 | wattrset(view->win, get_line_attr(type)); |
| 2911 | wchgat(view->win, -1, 0, type, NULL); |
| 2912 | |
| 2913 | } else { |
| 2914 | type = LINE_MAIN_COMMIT; |
| 2915 | wattrset(view->win, get_line_attr(LINE_MAIN_DATE)); |
| 2916 | } |
| 2917 | |
| 2918 | timelen = strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time); |
| 2919 | waddnstr(view->win, buf, timelen); |
| 2920 | waddstr(view->win, " "); |
| 2921 | |
| 2922 | col += DATE_COLS; |
| 2923 | wmove(view->win, lineno, col); |
| 2924 | if (type != LINE_CURSOR) |
| 2925 | wattrset(view->win, get_line_attr(LINE_MAIN_AUTHOR)); |
| 2926 | |
| 2927 | if (opt_utf8) { |
| 2928 | authorlen = utf8_length(commit->author, AUTHOR_COLS - 2, &col, &trimmed); |
| 2929 | } else { |
| 2930 | authorlen = strlen(commit->author); |
| 2931 | if (authorlen > AUTHOR_COLS - 2) { |
| 2932 | authorlen = AUTHOR_COLS - 2; |
| 2933 | trimmed = 1; |
| 2934 | } |
| 2935 | } |
| 2936 | |
| 2937 | if (trimmed) { |
| 2938 | waddnstr(view->win, commit->author, authorlen); |
| 2939 | if (type != LINE_CURSOR) |
| 2940 | wattrset(view->win, get_line_attr(LINE_MAIN_DELIM)); |
| 2941 | waddch(view->win, '~'); |
| 2942 | } else { |
| 2943 | waddstr(view->win, commit->author); |
| 2944 | } |
| 2945 | |
| 2946 | col += AUTHOR_COLS; |
| 2947 | if (type != LINE_CURSOR) |
| 2948 | wattrset(view->win, A_NORMAL); |
| 2949 | |
| 2950 | if (opt_rev_graph && commit->graph_size) { |
| 2951 | size_t i; |
| 2952 | |
| 2953 | wmove(view->win, lineno, col); |
| 2954 | /* Using waddch() instead of waddnstr() ensures that |
| 2955 | * they'll be rendered correctly for the cursor line. */ |
| 2956 | for (i = 0; i < commit->graph_size; i++) |
| 2957 | waddch(view->win, commit->graph[i]); |
| 2958 | |
| 2959 | waddch(view->win, ' '); |
| 2960 | col += commit->graph_size + 1; |
| 2961 | } |
| 2962 | |
| 2963 | wmove(view->win, lineno, col); |
| 2964 | |
| 2965 | if (commit->refs) { |
| 2966 | size_t i = 0; |
| 2967 | |
| 2968 | do { |
| 2969 | if (type == LINE_CURSOR) |
| 2970 | ; |
| 2971 | else if (commit->refs[i]->tag) |
| 2972 | wattrset(view->win, get_line_attr(LINE_MAIN_TAG)); |
| 2973 | else |
| 2974 | wattrset(view->win, get_line_attr(LINE_MAIN_REF)); |
| 2975 | waddstr(view->win, "["); |
| 2976 | waddstr(view->win, commit->refs[i]->name); |
| 2977 | waddstr(view->win, "]"); |
| 2978 | if (type != LINE_CURSOR) |
| 2979 | wattrset(view->win, A_NORMAL); |
| 2980 | waddstr(view->win, " "); |
| 2981 | col += strlen(commit->refs[i]->name) + STRING_SIZE("[] "); |
| 2982 | } while (commit->refs[i++]->next); |
| 2983 | } |
| 2984 | |
| 2985 | if (type != LINE_CURSOR) |
| 2986 | wattrset(view->win, get_line_attr(type)); |
| 2987 | |
| 2988 | { |
| 2989 | int titlelen = strlen(commit->title); |
| 2990 | |
| 2991 | if (col + titlelen > view->width) |
| 2992 | titlelen = view->width - col; |
| 2993 | |
| 2994 | waddnstr(view->win, commit->title, titlelen); |
| 2995 | } |
| 2996 | |
| 2997 | return TRUE; |
| 2998 | } |
| 2999 | |
| 3000 | /* Reads git log --pretty=raw output and parses it into the commit struct. */ |
| 3001 | static bool |
| 3002 | main_read(struct view *view, char *line) |
| 3003 | { |
| 3004 | static struct rev_graph *graph = graph_stacks; |
| 3005 | enum line_type type; |
| 3006 | struct commit *commit = view->lines |
| 3007 | ? view->line[view->lines - 1].data : NULL; |
| 3008 | |
| 3009 | if (!line) { |
| 3010 | update_rev_graph(graph); |
| 3011 | return TRUE; |
| 3012 | } |
| 3013 | |
| 3014 | type = get_line_type(line); |
| 3015 | |
| 3016 | switch (type) { |
| 3017 | case LINE_COMMIT: |
| 3018 | commit = calloc(1, sizeof(struct commit)); |
| 3019 | if (!commit) |
| 3020 | return FALSE; |
| 3021 | |
| 3022 | line += STRING_SIZE("commit "); |
| 3023 | |
| 3024 | view->line[view->lines++].data = commit; |
| 3025 | string_copy(commit->id, line); |
| 3026 | commit->refs = get_refs(commit->id); |
| 3027 | graph->commit = commit; |
| 3028 | break; |
| 3029 | |
| 3030 | case LINE_PARENT: |
| 3031 | if (commit) { |
| 3032 | line += STRING_SIZE("parent "); |
| 3033 | push_rev_graph(graph->parents, line); |
| 3034 | } |
| 3035 | break; |
| 3036 | |
| 3037 | case LINE_AUTHOR: |
| 3038 | { |
| 3039 | char *ident = line + STRING_SIZE("author "); |
| 3040 | char *end = strchr(ident, '<'); |
| 3041 | |
| 3042 | if (!commit) |
| 3043 | break; |
| 3044 | |
| 3045 | update_rev_graph(graph); |
| 3046 | graph = graph->next; |
| 3047 | |
| 3048 | if (end) { |
| 3049 | char *email = end + 1; |
| 3050 | |
| 3051 | for (; end > ident && isspace(end[-1]); end--) ; |
| 3052 | |
| 3053 | if (end == ident && *email) { |
| 3054 | ident = email; |
| 3055 | end = strchr(ident, '>'); |
| 3056 | for (; end > ident && isspace(end[-1]); end--) ; |
| 3057 | } |
| 3058 | *end = 0; |
| 3059 | } |
| 3060 | |
| 3061 | /* End is NULL or ident meaning there's no author. */ |
| 3062 | if (end <= ident) |
| 3063 | ident = "Unknown"; |
| 3064 | |
| 3065 | string_copy(commit->author, ident); |
| 3066 | |
| 3067 | /* Parse epoch and timezone */ |
| 3068 | if (end) { |
| 3069 | char *secs = strchr(end + 1, '>'); |
| 3070 | char *zone; |
| 3071 | time_t time; |
| 3072 | |
| 3073 | if (!secs || secs[1] != ' ') |
| 3074 | break; |
| 3075 | |
| 3076 | secs += 2; |
| 3077 | time = (time_t) atol(secs); |
| 3078 | zone = strchr(secs, ' '); |
| 3079 | if (zone && strlen(zone) == STRING_SIZE(" +0700")) { |
| 3080 | long tz; |
| 3081 | |
| 3082 | zone++; |
| 3083 | tz = ('0' - zone[1]) * 60 * 60 * 10; |
| 3084 | tz += ('0' - zone[2]) * 60 * 60; |
| 3085 | tz += ('0' - zone[3]) * 60; |
| 3086 | tz += ('0' - zone[4]) * 60; |
| 3087 | |
| 3088 | if (zone[0] == '-') |
| 3089 | tz = -tz; |
| 3090 | |
| 3091 | time -= tz; |
| 3092 | } |
| 3093 | gmtime_r(&time, &commit->time); |
| 3094 | } |
| 3095 | break; |
| 3096 | } |
| 3097 | default: |
| 3098 | if (!commit) |
| 3099 | break; |
| 3100 | |
| 3101 | /* Fill in the commit title if it has not already been set. */ |
| 3102 | if (commit->title[0]) |
| 3103 | break; |
| 3104 | |
| 3105 | /* Require titles to start with a non-space character at the |
| 3106 | * offset used by git log. */ |
| 3107 | /* FIXME: More gracefull handling of titles; append "..." to |
| 3108 | * shortened titles, etc. */ |
| 3109 | if (strncmp(line, " ", 4) || |
| 3110 | isspace(line[4])) |
| 3111 | break; |
| 3112 | |
| 3113 | string_copy(commit->title, line + 4); |
| 3114 | } |
| 3115 | |
| 3116 | return TRUE; |
| 3117 | } |
| 3118 | |
| 3119 | static bool |
| 3120 | main_enter(struct view *view, struct line *line) |
| 3121 | { |
| 3122 | enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT; |
| 3123 | |
| 3124 | open_view(view, REQ_VIEW_DIFF, flags); |
| 3125 | return TRUE; |
| 3126 | } |
| 3127 | |
| 3128 | static bool |
| 3129 | main_grep(struct view *view, struct line *line) |
| 3130 | { |
| 3131 | struct commit *commit = line->data; |
| 3132 | enum { S_TITLE, S_AUTHOR, S_DATE, S_END } state; |
| 3133 | char buf[DATE_COLS + 1]; |
| 3134 | regmatch_t pmatch; |
| 3135 | |
| 3136 | for (state = S_TITLE; state < S_END; state++) { |
| 3137 | char *text; |
| 3138 | |
| 3139 | switch (state) { |
| 3140 | case S_TITLE: text = commit->title; break; |
| 3141 | case S_AUTHOR: text = commit->author; break; |
| 3142 | case S_DATE: |
| 3143 | if (!strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time)) |
| 3144 | continue; |
| 3145 | text = buf; |
| 3146 | break; |
| 3147 | |
| 3148 | default: |
| 3149 | return FALSE; |
| 3150 | } |
| 3151 | |
| 3152 | if (regexec(view->regex, text, 1, &pmatch, 0) != REG_NOMATCH) |
| 3153 | return TRUE; |
| 3154 | } |
| 3155 | |
| 3156 | return FALSE; |
| 3157 | } |
| 3158 | |
| 3159 | static void |
| 3160 | main_select(struct view *view, struct line *line) |
| 3161 | { |
| 3162 | struct commit *commit = line->data; |
| 3163 | |
| 3164 | string_copy(view->ref, commit->id); |
| 3165 | string_copy(ref_commit, view->ref); |
| 3166 | } |
| 3167 | |
| 3168 | static struct view_ops main_ops = { |
| 3169 | "commit", |
| 3170 | main_draw, |
| 3171 | main_read, |
| 3172 | main_enter, |
| 3173 | main_grep, |
| 3174 | main_select, |
| 3175 | }; |
| 3176 | |
| 3177 | |
| 3178 | /* |
| 3179 | * Unicode / UTF-8 handling |
| 3180 | * |
| 3181 | * NOTE: Much of the following code for dealing with unicode is derived from |
| 3182 | * ELinks' UTF-8 code developed by Scrool <scroolik@gmail.com>. Origin file is |
| 3183 | * src/intl/charset.c from the utf8 branch commit elinks-0.11.0-g31f2c28. |
| 3184 | */ |
| 3185 | |
| 3186 | /* I've (over)annotated a lot of code snippets because I am not entirely |
| 3187 | * confident that the approach taken by this small UTF-8 interface is correct. |
| 3188 | * --jonas */ |
| 3189 | |
| 3190 | static inline int |
| 3191 | unicode_width(unsigned long c) |
| 3192 | { |
| 3193 | if (c >= 0x1100 && |
| 3194 | (c <= 0x115f /* Hangul Jamo */ |
| 3195 | || c == 0x2329 |
| 3196 | || c == 0x232a |
| 3197 | || (c >= 0x2e80 && c <= 0xa4cf && c != 0x303f) |
| 3198 | /* CJK ... Yi */ |
| 3199 | || (c >= 0xac00 && c <= 0xd7a3) /* Hangul Syllables */ |
| 3200 | || (c >= 0xf900 && c <= 0xfaff) /* CJK Compatibility Ideographs */ |
| 3201 | || (c >= 0xfe30 && c <= 0xfe6f) /* CJK Compatibility Forms */ |
| 3202 | || (c >= 0xff00 && c <= 0xff60) /* Fullwidth Forms */ |
| 3203 | || (c >= 0xffe0 && c <= 0xffe6) |
| 3204 | || (c >= 0x20000 && c <= 0x2fffd) |
| 3205 | || (c >= 0x30000 && c <= 0x3fffd))) |
| 3206 | return 2; |
| 3207 | |
| 3208 | return 1; |
| 3209 | } |
| 3210 | |
| 3211 | /* Number of bytes used for encoding a UTF-8 character indexed by first byte. |
| 3212 | * Illegal bytes are set one. */ |
| 3213 | static const unsigned char utf8_bytes[256] = { |
| 3214 | 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, |
| 3215 | 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, |
| 3216 | 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, |
| 3217 | 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, |
| 3218 | 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, |
| 3219 | 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, |
| 3220 | 2,2,2,2,2,2,2,2, 2,2,2,2,2,2,2,2, 2,2,2,2,2,2,2,2, 2,2,2,2,2,2,2,2, |
| 3221 | 3,3,3,3,3,3,3,3, 3,3,3,3,3,3,3,3, 4,4,4,4,4,4,4,4, 5,5,5,5,6,6,1,1, |
| 3222 | }; |
| 3223 | |
| 3224 | /* Decode UTF-8 multi-byte representation into a unicode character. */ |
| 3225 | static inline unsigned long |
| 3226 | utf8_to_unicode(const char *string, size_t length) |
| 3227 | { |
| 3228 | unsigned long unicode; |
| 3229 | |
| 3230 | switch (length) { |
| 3231 | case 1: |
| 3232 | unicode = string[0]; |
| 3233 | break; |
| 3234 | case 2: |
| 3235 | unicode = (string[0] & 0x1f) << 6; |
| 3236 | unicode += (string[1] & 0x3f); |
| 3237 | break; |
| 3238 | case 3: |
| 3239 | unicode = (string[0] & 0x0f) << 12; |
| 3240 | unicode += ((string[1] & 0x3f) << 6); |
| 3241 | unicode += (string[2] & 0x3f); |
| 3242 | break; |
| 3243 | case 4: |
| 3244 | unicode = (string[0] & 0x0f) << 18; |
| 3245 | unicode += ((string[1] & 0x3f) << 12); |
| 3246 | unicode += ((string[2] & 0x3f) << 6); |
| 3247 | unicode += (string[3] & 0x3f); |
| 3248 | break; |
| 3249 | case 5: |
| 3250 | unicode = (string[0] & 0x0f) << 24; |
| 3251 | unicode += ((string[1] & 0x3f) << 18); |
| 3252 | unicode += ((string[2] & 0x3f) << 12); |
| 3253 | unicode += ((string[3] & 0x3f) << 6); |
| 3254 | unicode += (string[4] & 0x3f); |
| 3255 | break; |
| 3256 | case 6: |
| 3257 | unicode = (string[0] & 0x01) << 30; |
| 3258 | unicode += ((string[1] & 0x3f) << 24); |
| 3259 | unicode += ((string[2] & 0x3f) << 18); |
| 3260 | unicode += ((string[3] & 0x3f) << 12); |
| 3261 | unicode += ((string[4] & 0x3f) << 6); |
| 3262 | unicode += (string[5] & 0x3f); |
| 3263 | break; |
| 3264 | default: |
| 3265 | die("Invalid unicode length"); |
| 3266 | } |
| 3267 | |
| 3268 | /* Invalid characters could return the special 0xfffd value but NUL |
| 3269 | * should be just as good. */ |
| 3270 | return unicode > 0xffff ? 0 : unicode; |
| 3271 | } |
| 3272 | |
| 3273 | /* Calculates how much of string can be shown within the given maximum width |
| 3274 | * and sets trimmed parameter to non-zero value if all of string could not be |
| 3275 | * shown. |
| 3276 | * |
| 3277 | * Additionally, adds to coloffset how many many columns to move to align with |
| 3278 | * the expected position. Takes into account how multi-byte and double-width |
| 3279 | * characters will effect the cursor position. |
| 3280 | * |
| 3281 | * Returns the number of bytes to output from string to satisfy max_width. */ |
| 3282 | static size_t |
| 3283 | utf8_length(const char *string, size_t max_width, int *coloffset, int *trimmed) |
| 3284 | { |
| 3285 | const char *start = string; |
| 3286 | const char *end = strchr(string, '\0'); |
| 3287 | size_t mbwidth = 0; |
| 3288 | size_t width = 0; |
| 3289 | |
| 3290 | *trimmed = 0; |
| 3291 | |
| 3292 | while (string < end) { |
| 3293 | int c = *(unsigned char *) string; |
| 3294 | unsigned char bytes = utf8_bytes[c]; |
| 3295 | size_t ucwidth; |
| 3296 | unsigned long unicode; |
| 3297 | |
| 3298 | if (string + bytes > end) |
| 3299 | break; |
| 3300 | |
| 3301 | /* Change representation to figure out whether |
| 3302 | * it is a single- or double-width character. */ |
| 3303 | |
| 3304 | unicode = utf8_to_unicode(string, bytes); |
| 3305 | /* FIXME: Graceful handling of invalid unicode character. */ |
| 3306 | if (!unicode) |
| 3307 | break; |
| 3308 | |
| 3309 | ucwidth = unicode_width(unicode); |
| 3310 | width += ucwidth; |
| 3311 | if (width > max_width) { |
| 3312 | *trimmed = 1; |
| 3313 | break; |
| 3314 | } |
| 3315 | |
| 3316 | /* The column offset collects the differences between the |
| 3317 | * number of bytes encoding a character and the number of |
| 3318 | * columns will be used for rendering said character. |
| 3319 | * |
| 3320 | * So if some character A is encoded in 2 bytes, but will be |
| 3321 | * represented on the screen using only 1 byte this will and up |
| 3322 | * adding 1 to the multi-byte column offset. |
| 3323 | * |
| 3324 | * Assumes that no double-width character can be encoding in |
| 3325 | * less than two bytes. */ |
| 3326 | if (bytes > ucwidth) |
| 3327 | mbwidth += bytes - ucwidth; |
| 3328 | |
| 3329 | string += bytes; |
| 3330 | } |
| 3331 | |
| 3332 | *coloffset += mbwidth; |
| 3333 | |
| 3334 | return string - start; |
| 3335 | } |
| 3336 | |
| 3337 | |
| 3338 | /* |
| 3339 | * Status management |
| 3340 | */ |
| 3341 | |
| 3342 | /* Whether or not the curses interface has been initialized. */ |
| 3343 | static bool cursed = FALSE; |
| 3344 | |
| 3345 | /* The status window is used for polling keystrokes. */ |
| 3346 | static WINDOW *status_win; |
| 3347 | |
| 3348 | /* Update status and title window. */ |
| 3349 | static void |
| 3350 | report(const char *msg, ...) |
| 3351 | { |
| 3352 | static bool empty = TRUE; |
| 3353 | struct view *view = display[current_view]; |
| 3354 | |
| 3355 | if (!empty || *msg) { |
| 3356 | va_list args; |
| 3357 | |
| 3358 | va_start(args, msg); |
| 3359 | |
| 3360 | werase(status_win); |
| 3361 | wmove(status_win, 0, 0); |
| 3362 | if (*msg) { |
| 3363 | vwprintw(status_win, msg, args); |
| 3364 | empty = FALSE; |
| 3365 | } else { |
| 3366 | empty = TRUE; |
| 3367 | } |
| 3368 | wrefresh(status_win); |
| 3369 | |
| 3370 | va_end(args); |
| 3371 | } |
| 3372 | |
| 3373 | update_view_title(view); |
| 3374 | update_display_cursor(view); |
| 3375 | } |
| 3376 | |
| 3377 | /* Controls when nodelay should be in effect when polling user input. */ |
| 3378 | static void |
| 3379 | set_nonblocking_input(bool loading) |
| 3380 | { |
| 3381 | static unsigned int loading_views; |
| 3382 | |
| 3383 | if ((loading == FALSE && loading_views-- == 1) || |
| 3384 | (loading == TRUE && loading_views++ == 0)) |
| 3385 | nodelay(status_win, loading); |
| 3386 | } |
| 3387 | |
| 3388 | static void |
| 3389 | init_display(void) |
| 3390 | { |
| 3391 | int x, y; |
| 3392 | |
| 3393 | /* Initialize the curses library */ |
| 3394 | if (isatty(STDIN_FILENO)) { |
| 3395 | cursed = !!initscr(); |
| 3396 | } else { |
| 3397 | /* Leave stdin and stdout alone when acting as a pager. */ |
| 3398 | FILE *io = fopen("/dev/tty", "r+"); |
| 3399 | |
| 3400 | if (!io) |
| 3401 | die("Failed to open /dev/tty"); |
| 3402 | cursed = !!newterm(NULL, io, io); |
| 3403 | } |
| 3404 | |
| 3405 | if (!cursed) |
| 3406 | die("Failed to initialize curses"); |
| 3407 | |
| 3408 | nonl(); /* Tell curses not to do NL->CR/NL on output */ |
| 3409 | cbreak(); /* Take input chars one at a time, no wait for \n */ |
| 3410 | noecho(); /* Don't echo input */ |
| 3411 | leaveok(stdscr, TRUE); |
| 3412 | |
| 3413 | if (has_colors()) |
| 3414 | init_colors(); |
| 3415 | |
| 3416 | getmaxyx(stdscr, y, x); |
| 3417 | status_win = newwin(1, 0, y - 1, 0); |
| 3418 | if (!status_win) |
| 3419 | die("Failed to create status window"); |
| 3420 | |
| 3421 | /* Enable keyboard mapping */ |
| 3422 | keypad(status_win, TRUE); |
| 3423 | wbkgdset(status_win, get_line_attr(LINE_STATUS)); |
| 3424 | } |
| 3425 | |
| 3426 | static char * |
| 3427 | read_prompt(const char *prompt) |
| 3428 | { |
| 3429 | enum { READING, STOP, CANCEL } status = READING; |
| 3430 | static char buf[sizeof(opt_cmd) - STRING_SIZE("git \0")]; |
| 3431 | int pos = 0; |
| 3432 | |
| 3433 | while (status == READING) { |
| 3434 | struct view *view; |
| 3435 | int i, key; |
| 3436 | |
| 3437 | foreach_view (view, i) |
| 3438 | update_view(view); |
| 3439 | |
| 3440 | report("%s%.*s", prompt, pos, buf); |
| 3441 | /* Refresh, accept single keystroke of input */ |
| 3442 | key = wgetch(status_win); |
| 3443 | switch (key) { |
| 3444 | case KEY_RETURN: |
| 3445 | case KEY_ENTER: |
| 3446 | case '\n': |
| 3447 | status = pos ? STOP : CANCEL; |
| 3448 | break; |
| 3449 | |
| 3450 | case KEY_BACKSPACE: |
| 3451 | if (pos > 0) |
| 3452 | pos--; |
| 3453 | else |
| 3454 | status = CANCEL; |
| 3455 | break; |
| 3456 | |
| 3457 | case KEY_ESC: |
| 3458 | status = CANCEL; |
| 3459 | break; |
| 3460 | |
| 3461 | case ERR: |
| 3462 | break; |
| 3463 | |
| 3464 | default: |
| 3465 | if (pos >= sizeof(buf)) { |
| 3466 | report("Input string too long"); |
| 3467 | return NULL; |
| 3468 | } |
| 3469 | |
| 3470 | if (isprint(key)) |
| 3471 | buf[pos++] = (char) key; |
| 3472 | } |
| 3473 | } |
| 3474 | |
| 3475 | if (status == CANCEL) { |
| 3476 | /* Clear the status window */ |
| 3477 | report(""); |
| 3478 | return NULL; |
| 3479 | } |
| 3480 | |
| 3481 | buf[pos++] = 0; |
| 3482 | |
| 3483 | return buf; |
| 3484 | } |
| 3485 | |
| 3486 | /* |
| 3487 | * Repository references |
| 3488 | */ |
| 3489 | |
| 3490 | static struct ref *refs; |
| 3491 | static size_t refs_size; |
| 3492 | |
| 3493 | /* Id <-> ref store */ |
| 3494 | static struct ref ***id_refs; |
| 3495 | static size_t id_refs_size; |
| 3496 | |
| 3497 | static struct ref ** |
| 3498 | get_refs(char *id) |
| 3499 | { |
| 3500 | struct ref ***tmp_id_refs; |
| 3501 | struct ref **ref_list = NULL; |
| 3502 | size_t ref_list_size = 0; |
| 3503 | size_t i; |
| 3504 | |
| 3505 | for (i = 0; i < id_refs_size; i++) |
| 3506 | if (!strcmp(id, id_refs[i][0]->id)) |
| 3507 | return id_refs[i]; |
| 3508 | |
| 3509 | tmp_id_refs = realloc(id_refs, (id_refs_size + 1) * sizeof(*id_refs)); |
| 3510 | if (!tmp_id_refs) |
| 3511 | return NULL; |
| 3512 | |
| 3513 | id_refs = tmp_id_refs; |
| 3514 | |
| 3515 | for (i = 0; i < refs_size; i++) { |
| 3516 | struct ref **tmp; |
| 3517 | |
| 3518 | if (strcmp(id, refs[i].id)) |
| 3519 | continue; |
| 3520 | |
| 3521 | tmp = realloc(ref_list, (ref_list_size + 1) * sizeof(*ref_list)); |
| 3522 | if (!tmp) { |
| 3523 | if (ref_list) |
| 3524 | free(ref_list); |
| 3525 | return NULL; |
| 3526 | } |
| 3527 | |
| 3528 | ref_list = tmp; |
| 3529 | if (ref_list_size > 0) |
| 3530 | ref_list[ref_list_size - 1]->next = 1; |
| 3531 | ref_list[ref_list_size] = &refs[i]; |
| 3532 | |
| 3533 | /* XXX: The properties of the commit chains ensures that we can |
| 3534 | * safely modify the shared ref. The repo references will |
| 3535 | * always be similar for the same id. */ |
| 3536 | ref_list[ref_list_size]->next = 0; |
| 3537 | ref_list_size++; |
| 3538 | } |
| 3539 | |
| 3540 | if (ref_list) |
| 3541 | id_refs[id_refs_size++] = ref_list; |
| 3542 | |
| 3543 | return ref_list; |
| 3544 | } |
| 3545 | |
| 3546 | static int |
| 3547 | read_ref(char *id, int idlen, char *name, int namelen) |
| 3548 | { |
| 3549 | struct ref *ref; |
| 3550 | bool tag = FALSE; |
| 3551 | |
| 3552 | if (!strncmp(name, "refs/tags/", STRING_SIZE("refs/tags/"))) { |
| 3553 | /* Commits referenced by tags has "^{}" appended. */ |
| 3554 | if (name[namelen - 1] != '}') |
| 3555 | return OK; |
| 3556 | |
| 3557 | while (namelen > 0 && name[namelen] != '^') |
| 3558 | namelen--; |
| 3559 | |
| 3560 | tag = TRUE; |
| 3561 | namelen -= STRING_SIZE("refs/tags/"); |
| 3562 | name += STRING_SIZE("refs/tags/"); |
| 3563 | |
| 3564 | } else if (!strncmp(name, "refs/heads/", STRING_SIZE("refs/heads/"))) { |
| 3565 | namelen -= STRING_SIZE("refs/heads/"); |
| 3566 | name += STRING_SIZE("refs/heads/"); |
| 3567 | |
| 3568 | } else if (!strcmp(name, "HEAD")) { |
| 3569 | return OK; |
| 3570 | } |
| 3571 | |
| 3572 | refs = realloc(refs, sizeof(*refs) * (refs_size + 1)); |
| 3573 | if (!refs) |
| 3574 | return ERR; |
| 3575 | |
| 3576 | ref = &refs[refs_size++]; |
| 3577 | ref->name = malloc(namelen + 1); |
| 3578 | if (!ref->name) |
| 3579 | return ERR; |
| 3580 | |
| 3581 | strncpy(ref->name, name, namelen); |
| 3582 | ref->name[namelen] = 0; |
| 3583 | ref->tag = tag; |
| 3584 | string_copy(ref->id, id); |
| 3585 | |
| 3586 | return OK; |
| 3587 | } |
| 3588 | |
| 3589 | static int |
| 3590 | load_refs(void) |
| 3591 | { |
| 3592 | const char *cmd_env = getenv("TIG_LS_REMOTE"); |
| 3593 | const char *cmd = cmd_env && *cmd_env ? cmd_env : TIG_LS_REMOTE; |
| 3594 | |
| 3595 | return read_properties(popen(cmd, "r"), "\t", read_ref); |
| 3596 | } |
| 3597 | |
| 3598 | static int |
| 3599 | read_repo_config_option(char *name, int namelen, char *value, int valuelen) |
| 3600 | { |
| 3601 | if (!strcmp(name, "i18n.commitencoding")) |
| 3602 | string_copy(opt_encoding, value); |
| 3603 | |
| 3604 | return OK; |
| 3605 | } |
| 3606 | |
| 3607 | static int |
| 3608 | load_repo_config(void) |
| 3609 | { |
| 3610 | return read_properties(popen("git repo-config --list", "r"), |
| 3611 | "=", read_repo_config_option); |
| 3612 | } |
| 3613 | |
| 3614 | static int |
| 3615 | read_properties(FILE *pipe, const char *separators, |
| 3616 | int (*read_property)(char *, int, char *, int)) |
| 3617 | { |
| 3618 | char buffer[BUFSIZ]; |
| 3619 | char *name; |
| 3620 | int state = OK; |
| 3621 | |
| 3622 | if (!pipe) |
| 3623 | return ERR; |
| 3624 | |
| 3625 | while (state == OK && (name = fgets(buffer, sizeof(buffer), pipe))) { |
| 3626 | char *value; |
| 3627 | size_t namelen; |
| 3628 | size_t valuelen; |
| 3629 | |
| 3630 | name = chomp_string(name); |
| 3631 | namelen = strcspn(name, separators); |
| 3632 | |
| 3633 | if (name[namelen]) { |
| 3634 | name[namelen] = 0; |
| 3635 | value = chomp_string(name + namelen + 1); |
| 3636 | valuelen = strlen(value); |
| 3637 | |
| 3638 | } else { |
| 3639 | value = ""; |
| 3640 | valuelen = 0; |
| 3641 | } |
| 3642 | |
| 3643 | state = read_property(name, namelen, value, valuelen); |
| 3644 | } |
| 3645 | |
| 3646 | if (state != ERR && ferror(pipe)) |
| 3647 | state = ERR; |
| 3648 | |
| 3649 | pclose(pipe); |
| 3650 | |
| 3651 | return state; |
| 3652 | } |
| 3653 | |
| 3654 | |
| 3655 | /* |
| 3656 | * Main |
| 3657 | */ |
| 3658 | |
| 3659 | static void __NORETURN |
| 3660 | quit(int sig) |
| 3661 | { |
| 3662 | /* XXX: Restore tty modes and let the OS cleanup the rest! */ |
| 3663 | if (cursed) |
| 3664 | endwin(); |
| 3665 | exit(0); |
| 3666 | } |
| 3667 | |
| 3668 | static void __NORETURN |
| 3669 | die(const char *err, ...) |
| 3670 | { |
| 3671 | va_list args; |
| 3672 | |
| 3673 | endwin(); |
| 3674 | |
| 3675 | va_start(args, err); |
| 3676 | fputs("tig: ", stderr); |
| 3677 | vfprintf(stderr, err, args); |
| 3678 | fputs("\n", stderr); |
| 3679 | va_end(args); |
| 3680 | |
| 3681 | exit(1); |
| 3682 | } |
| 3683 | |
| 3684 | int |
| 3685 | main(int argc, char *argv[]) |
| 3686 | { |
| 3687 | struct view *view; |
| 3688 | enum request request; |
| 3689 | size_t i; |
| 3690 | |
| 3691 | signal(SIGINT, quit); |
| 3692 | |
| 3693 | if (setlocale(LC_ALL, "")) { |
| 3694 | string_copy(opt_codeset, nl_langinfo(CODESET)); |
| 3695 | } |
| 3696 | |
| 3697 | if (load_options() == ERR) |
| 3698 | die("Failed to load user config."); |
| 3699 | |
| 3700 | /* Load the repo config file so options can be overwritten from |
| 3701 | * the command line. */ |
| 3702 | if (load_repo_config() == ERR) |
| 3703 | die("Failed to load repo config."); |
| 3704 | |
| 3705 | if (!parse_options(argc, argv)) |
| 3706 | return 0; |
| 3707 | |
| 3708 | if (*opt_codeset && strcmp(opt_codeset, opt_encoding)) { |
| 3709 | opt_iconv = iconv_open(opt_codeset, opt_encoding); |
| 3710 | if (opt_iconv == ICONV_NONE) |
| 3711 | die("Failed to initialize character set conversion"); |
| 3712 | } |
| 3713 | |
| 3714 | if (load_refs() == ERR) |
| 3715 | die("Failed to load refs."); |
| 3716 | |
| 3717 | /* Require a git repository unless when running in pager mode. */ |
| 3718 | if (refs_size == 0 && opt_request != REQ_VIEW_PAGER) |
| 3719 | die("Not a git repository"); |
| 3720 | |
| 3721 | for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++) |
| 3722 | view->cmd_env = getenv(view->cmd_env); |
| 3723 | |
| 3724 | request = opt_request; |
| 3725 | |
| 3726 | init_display(); |
| 3727 | |
| 3728 | while (view_driver(display[current_view], request)) { |
| 3729 | int key; |
| 3730 | int i; |
| 3731 | |
| 3732 | foreach_view (view, i) |
| 3733 | update_view(view); |
| 3734 | |
| 3735 | /* Refresh, accept single keystroke of input */ |
| 3736 | key = wgetch(status_win); |
| 3737 | |
| 3738 | request = get_keybinding(display[current_view]->keymap, key); |
| 3739 | |
| 3740 | /* Some low-level request handling. This keeps access to |
| 3741 | * status_win restricted. */ |
| 3742 | switch (request) { |
| 3743 | case REQ_PROMPT: |
| 3744 | { |
| 3745 | char *cmd = read_prompt(":"); |
| 3746 | |
| 3747 | if (cmd && string_format(opt_cmd, "git %s", cmd)) { |
| 3748 | if (strncmp(cmd, "show", 4) && isspace(cmd[4])) { |
| 3749 | opt_request = REQ_VIEW_DIFF; |
| 3750 | } else { |
| 3751 | opt_request = REQ_VIEW_PAGER; |
| 3752 | } |
| 3753 | break; |
| 3754 | } |
| 3755 | |
| 3756 | request = REQ_NONE; |
| 3757 | break; |
| 3758 | } |
| 3759 | case REQ_SEARCH: |
| 3760 | case REQ_SEARCH_BACK: |
| 3761 | { |
| 3762 | const char *prompt = request == REQ_SEARCH |
| 3763 | ? "/" : "?"; |
| 3764 | char *search = read_prompt(prompt); |
| 3765 | |
| 3766 | if (search) |
| 3767 | string_copy(opt_search, search); |
| 3768 | else |
| 3769 | request = REQ_NONE; |
| 3770 | break; |
| 3771 | } |
| 3772 | case REQ_SCREEN_RESIZE: |
| 3773 | { |
| 3774 | int height, width; |
| 3775 | |
| 3776 | getmaxyx(stdscr, height, width); |
| 3777 | |
| 3778 | /* Resize the status view and let the view driver take |
| 3779 | * care of resizing the displayed views. */ |
| 3780 | wresize(status_win, 1, width); |
| 3781 | mvwin(status_win, height - 1, 0); |
| 3782 | wrefresh(status_win); |
| 3783 | break; |
| 3784 | } |
| 3785 | default: |
| 3786 | break; |
| 3787 | } |
| 3788 | } |
| 3789 | |
| 3790 | quit(0); |
| 3791 | |
| 3792 | return 0; |
| 3793 | } |