| 1 | /* Copyright (c) 2006 Jonas Fonseca <fonseca@diku.dk> |
| 2 | * See license info at the bottom. */ |
| 3 | /** |
| 4 | * TIG(1) |
| 5 | * ====== |
| 6 | * |
| 7 | * NAME |
| 8 | * ---- |
| 9 | * tig - text-mode interface for git |
| 10 | * |
| 11 | * SYNOPSIS |
| 12 | * -------- |
| 13 | * [verse] |
| 14 | * tig [options] |
| 15 | * tig [options] log [git log options] |
| 16 | * tig [options] diff [git diff options] |
| 17 | * tig [options] < [git log or git diff output] |
| 18 | * |
| 19 | * DESCRIPTION |
| 20 | * ----------- |
| 21 | * Browse changes in a git repository. |
| 22 | **/ |
| 23 | |
| 24 | #ifndef DEBUG |
| 25 | #define NDEBUG |
| 26 | #endif |
| 27 | |
| 28 | #ifndef VERSION |
| 29 | #define VERSION "tig-0.1" |
| 30 | #endif |
| 31 | |
| 32 | #include <assert.h> |
| 33 | #include <errno.h> |
| 34 | #include <ctype.h> |
| 35 | #include <signal.h> |
| 36 | #include <stdarg.h> |
| 37 | #include <stdio.h> |
| 38 | #include <stdlib.h> |
| 39 | #include <string.h> |
| 40 | #include <time.h> |
| 41 | |
| 42 | #include <curses.h> |
| 43 | |
| 44 | static void die(const char *err, ...); |
| 45 | static void report(const char *msg, ...); |
| 46 | |
| 47 | #define SIZEOF_REF 256 /* Size of symbolic or SHA1 ID. */ |
| 48 | #define SIZEOF_CMD 1024 /* Size of command buffer. */ |
| 49 | |
| 50 | /* This color name can be used to refer to the default term colors. */ |
| 51 | #define COLOR_DEFAULT (-1) |
| 52 | |
| 53 | /* The format and size of the date column in the main view. */ |
| 54 | #define DATE_FORMAT "%Y-%m-%d %H:%M" |
| 55 | #define DATE_COLS (STRING_SIZE("2006-04-29 14:21 ")) |
| 56 | |
| 57 | /* The default interval between line numbers. */ |
| 58 | #define NUMBER_INTERVAL 1 |
| 59 | |
| 60 | #define SCALE_SPLIT_VIEW(height) ((height) * 2 / 3) |
| 61 | |
| 62 | #define ABS(x) ((x) >= 0 ? (x) : -(x)) |
| 63 | #define MIN(x, y) ((x) < (y) ? (x) : (y)) |
| 64 | |
| 65 | #define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0])) |
| 66 | #define STRING_SIZE(x) (sizeof(x) - 1) |
| 67 | |
| 68 | /* Some ascii-shorthands that fit into the ncurses namespace. */ |
| 69 | #define KEY_TAB '\t' |
| 70 | #define KEY_RETURN '\r' |
| 71 | #define KEY_ESC 27 |
| 72 | |
| 73 | /* User action requests. */ |
| 74 | enum request { |
| 75 | /* Offset all requests to avoid conflicts with ncurses getch values. */ |
| 76 | REQ_OFFSET = KEY_MAX + 1, |
| 77 | |
| 78 | /* XXX: Keep the view request first and in sync with views[]. */ |
| 79 | REQ_VIEW_MAIN, |
| 80 | REQ_VIEW_DIFF, |
| 81 | REQ_VIEW_LOG, |
| 82 | REQ_VIEW_HELP, |
| 83 | |
| 84 | REQ_QUIT, |
| 85 | REQ_SHOW_VERSION, |
| 86 | REQ_SHOW_COMMIT, |
| 87 | REQ_STOP_LOADING, |
| 88 | REQ_SCREEN_REDRAW, |
| 89 | REQ_SCREEN_UPDATE, |
| 90 | REQ_TOGGLE_LINE_NUMBERS, |
| 91 | |
| 92 | REQ_MOVE_UP, |
| 93 | REQ_MOVE_DOWN, |
| 94 | REQ_MOVE_PAGE_UP, |
| 95 | REQ_MOVE_PAGE_DOWN, |
| 96 | REQ_MOVE_FIRST_LINE, |
| 97 | REQ_MOVE_LAST_LINE, |
| 98 | |
| 99 | REQ_SCROLL_LINE_UP, |
| 100 | REQ_SCROLL_LINE_DOWN, |
| 101 | REQ_SCROLL_PAGE_UP, |
| 102 | REQ_SCROLL_PAGE_DOWN, |
| 103 | }; |
| 104 | |
| 105 | struct commit { |
| 106 | char id[41]; /* SHA1 ID. */ |
| 107 | char title[75]; /* The first line of the commit message. */ |
| 108 | char author[75]; /* The author of the commit. */ |
| 109 | struct tm time; /* Date from the author ident. */ |
| 110 | }; |
| 111 | |
| 112 | |
| 113 | static inline void |
| 114 | string_ncopy(char *dst, char *src, int dstlen) |
| 115 | { |
| 116 | strncpy(dst, src, dstlen - 1); |
| 117 | dst[dstlen - 1] = 0; |
| 118 | } |
| 119 | |
| 120 | /* Shorthand for safely copying into a fixed buffer. */ |
| 121 | #define string_copy(dst, src) \ |
| 122 | string_ncopy(dst, src, sizeof(dst)) |
| 123 | |
| 124 | |
| 125 | /** |
| 126 | * OPTIONS |
| 127 | * ------- |
| 128 | **/ |
| 129 | |
| 130 | static int opt_line_number = FALSE; |
| 131 | static int opt_num_interval = NUMBER_INTERVAL; |
| 132 | static int opt_request = REQ_VIEW_MAIN; |
| 133 | |
| 134 | char ref_head[SIZEOF_REF] = "HEAD"; |
| 135 | char ref_commit[SIZEOF_REF] = "HEAD"; |
| 136 | |
| 137 | /* Returns the index of log or diff command or -1 to exit. */ |
| 138 | static int |
| 139 | parse_options(int argc, char *argv[]) |
| 140 | { |
| 141 | int i; |
| 142 | |
| 143 | for (i = 1; i < argc; i++) { |
| 144 | char *opt = argv[i]; |
| 145 | |
| 146 | /** |
| 147 | * log [options]:: |
| 148 | * git log options. |
| 149 | * |
| 150 | * diff [options]:: |
| 151 | * git diff options. |
| 152 | **/ |
| 153 | if (!strcmp(opt, "log") || |
| 154 | !strcmp(opt, "diff")) { |
| 155 | opt_request = opt[0] == 'l' |
| 156 | ? REQ_VIEW_LOG : REQ_VIEW_DIFF; |
| 157 | return i; |
| 158 | |
| 159 | /** |
| 160 | * -l:: |
| 161 | * Start up in log view. |
| 162 | **/ |
| 163 | } else if (!strcmp(opt, "-l")) { |
| 164 | opt_request = REQ_VIEW_LOG; |
| 165 | |
| 166 | /** |
| 167 | * -d:: |
| 168 | * Start up in diff view. |
| 169 | **/ |
| 170 | } else if (!strcmp(opt, "-d")) { |
| 171 | opt_request = REQ_VIEW_DIFF; |
| 172 | |
| 173 | /** |
| 174 | * -n[INTERVAL], --line-number[=INTERVAL]:: |
| 175 | * Prefix line numbers in log and diff view. |
| 176 | * Optionally, with interval different than each line. |
| 177 | **/ |
| 178 | } else if (!strncmp(opt, "-n", 2) || |
| 179 | !strncmp(opt, "--line-number", 13)) { |
| 180 | char *num = opt; |
| 181 | |
| 182 | if (opt[1] == 'n') { |
| 183 | num = opt + 2; |
| 184 | |
| 185 | } else if (opt[STRING_SIZE("--line-number")] == '=') { |
| 186 | num = opt + STRING_SIZE("--line-number="); |
| 187 | } |
| 188 | |
| 189 | if (isdigit(*num)) |
| 190 | opt_num_interval = atoi(num); |
| 191 | |
| 192 | opt_line_number = 1; |
| 193 | |
| 194 | /** |
| 195 | * -v, --version:: |
| 196 | * Show version and exit. |
| 197 | **/ |
| 198 | } else if (!strcmp(opt, "-v") || |
| 199 | !strcmp(opt, "--version")) { |
| 200 | printf("tig version %s\n", VERSION); |
| 201 | return -1; |
| 202 | |
| 203 | /** |
| 204 | * ref:: |
| 205 | * Commit reference, symbolic or raw SHA1 ID. |
| 206 | **/ |
| 207 | } else if (opt[0] && opt[0] != '-') { |
| 208 | string_copy(ref_head, opt); |
| 209 | string_copy(ref_commit, opt); |
| 210 | |
| 211 | } else { |
| 212 | die("unknown command '%s'", opt); |
| 213 | } |
| 214 | } |
| 215 | |
| 216 | return i; |
| 217 | } |
| 218 | |
| 219 | |
| 220 | /** |
| 221 | * KEYS |
| 222 | * ---- |
| 223 | * |
| 224 | * d:: |
| 225 | * diff |
| 226 | * l:: |
| 227 | * log |
| 228 | * q:: |
| 229 | * quit |
| 230 | * r:: |
| 231 | * redraw screen |
| 232 | * s:: |
| 233 | * stop all background loading |
| 234 | * j:: |
| 235 | * down |
| 236 | * k:: |
| 237 | * up |
| 238 | * h, ?:: |
| 239 | * help |
| 240 | * v:: |
| 241 | * version |
| 242 | **/ |
| 243 | |
| 244 | #define HELP "(d)iff, (l)og, (m)ain, (q)uit, (v)ersion, (h)elp" |
| 245 | |
| 246 | struct keymap { |
| 247 | int alias; |
| 248 | int request; |
| 249 | }; |
| 250 | |
| 251 | struct keymap keymap[] = { |
| 252 | /* Cursor navigation */ |
| 253 | { KEY_UP, REQ_MOVE_UP }, |
| 254 | { 'k', REQ_MOVE_UP }, |
| 255 | { KEY_DOWN, REQ_MOVE_DOWN }, |
| 256 | { 'j', REQ_MOVE_DOWN }, |
| 257 | { KEY_HOME, REQ_MOVE_FIRST_LINE }, |
| 258 | { KEY_END, REQ_MOVE_LAST_LINE }, |
| 259 | { KEY_NPAGE, REQ_MOVE_PAGE_DOWN }, |
| 260 | { KEY_PPAGE, REQ_MOVE_PAGE_UP }, |
| 261 | |
| 262 | /* Scrolling */ |
| 263 | { KEY_IC, REQ_SCROLL_LINE_UP }, |
| 264 | { KEY_DC, REQ_SCROLL_LINE_DOWN }, |
| 265 | { 'w', REQ_SCROLL_PAGE_UP }, |
| 266 | { 's', REQ_SCROLL_PAGE_DOWN }, |
| 267 | |
| 268 | { KEY_RETURN, REQ_SHOW_COMMIT }, |
| 269 | |
| 270 | /* View switching */ |
| 271 | { 'm', REQ_VIEW_MAIN }, |
| 272 | { 'd', REQ_VIEW_DIFF }, |
| 273 | { 'l', REQ_VIEW_LOG }, |
| 274 | { 'h', REQ_VIEW_HELP }, |
| 275 | |
| 276 | /* Misc */ |
| 277 | { KEY_ESC, REQ_QUIT }, |
| 278 | { 'q', REQ_QUIT }, |
| 279 | { 'z', REQ_STOP_LOADING }, |
| 280 | { 'v', REQ_SHOW_VERSION }, |
| 281 | { 'r', REQ_SCREEN_REDRAW }, |
| 282 | { 'n', REQ_TOGGLE_LINE_NUMBERS }, |
| 283 | |
| 284 | /* wgetch() with nodelay() enabled returns ERR when there's no input. */ |
| 285 | { ERR, REQ_SCREEN_UPDATE }, |
| 286 | }; |
| 287 | |
| 288 | static int |
| 289 | get_request(int request) |
| 290 | { |
| 291 | int i; |
| 292 | |
| 293 | for (i = 0; i < ARRAY_SIZE(keymap); i++) |
| 294 | if (keymap[i].alias == request) |
| 295 | return keymap[i].request; |
| 296 | |
| 297 | return request; |
| 298 | } |
| 299 | |
| 300 | |
| 301 | /* |
| 302 | * Line-oriented content detection. |
| 303 | * |
| 304 | * Line type String to match Foreground Background Attributes |
| 305 | * --------- --------------- ---------- ---------- ---------- */ |
| 306 | #define LINE_INFO \ |
| 307 | /* Diff markup */ \ |
| 308 | LINE(DIFF, "diff --git ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ |
| 309 | LINE(INDEX, "index ", COLOR_BLUE, COLOR_DEFAULT, 0), \ |
| 310 | LINE(DIFF_CHUNK, "@@", COLOR_MAGENTA, COLOR_DEFAULT, 0), \ |
| 311 | LINE(DIFF_ADD, "+", COLOR_GREEN, COLOR_DEFAULT, 0), \ |
| 312 | LINE(DIFF_DEL, "-", COLOR_RED, COLOR_DEFAULT, 0), \ |
| 313 | LINE(DIFF_OLDMODE, "old mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ |
| 314 | LINE(DIFF_NEWMODE, "new mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ |
| 315 | LINE(DIFF_COPY, "copy ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ |
| 316 | LINE(DIFF_RENAME, "rename ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ |
| 317 | LINE(DIFF_SIM, "similarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ |
| 318 | LINE(DIFF_DISSIM, "dissimilarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ |
| 319 | /* Pretty print commit header */ \ |
| 320 | LINE(AUTHOR, "Author: ", COLOR_CYAN, COLOR_DEFAULT, 0), \ |
| 321 | LINE(MERGE, "Merge: ", COLOR_BLUE, COLOR_DEFAULT, 0), \ |
| 322 | LINE(DATE, "Date: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \ |
| 323 | /* Raw commit header */ \ |
| 324 | LINE(COMMIT, "commit ", COLOR_GREEN, COLOR_DEFAULT, 0), \ |
| 325 | LINE(PARENT, "parent ", COLOR_BLUE, COLOR_DEFAULT, 0), \ |
| 326 | LINE(TREE, "tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \ |
| 327 | LINE(AUTHOR_IDENT, "author ", COLOR_CYAN, COLOR_DEFAULT, 0), \ |
| 328 | LINE(COMMITTER, "committer ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \ |
| 329 | /* Misc */ \ |
| 330 | LINE(DIFF_TREE, "diff-tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \ |
| 331 | LINE(SIGNOFF, " Signed-off-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \ |
| 332 | /* UI colors */ \ |
| 333 | LINE(DEFAULT, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \ |
| 334 | LINE(CURSOR, "", COLOR_WHITE, COLOR_GREEN, A_BOLD), \ |
| 335 | LINE(STATUS, "", COLOR_GREEN, COLOR_DEFAULT, 0), \ |
| 336 | LINE(TITLE, "", COLOR_WHITE, COLOR_BLUE, 0), \ |
| 337 | LINE(MAIN_DATE, "", COLOR_BLUE, COLOR_DEFAULT, 0), \ |
| 338 | LINE(MAIN_AUTHOR, "", COLOR_GREEN, COLOR_DEFAULT, 0), \ |
| 339 | LINE(MAIN_COMMIT, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \ |
| 340 | LINE(MAIN_DELIM, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), |
| 341 | |
| 342 | enum line_type { |
| 343 | #define LINE(type, line, fg, bg, attr) \ |
| 344 | LINE_##type |
| 345 | LINE_INFO |
| 346 | #undef LINE |
| 347 | }; |
| 348 | |
| 349 | struct line_info { |
| 350 | char *line; /* The start of line to match. */ |
| 351 | int linelen; /* Size of string to match. */ |
| 352 | int fg, bg, attr; /* Color and text attributes for the lines. */ |
| 353 | }; |
| 354 | |
| 355 | static struct line_info line_info[] = { |
| 356 | #define LINE(type, line, fg, bg, attr) \ |
| 357 | { (line), STRING_SIZE(line), (fg), (bg), (attr) } |
| 358 | LINE_INFO |
| 359 | #undef LINE |
| 360 | }; |
| 361 | |
| 362 | static enum line_type |
| 363 | get_line_type(char *line) |
| 364 | { |
| 365 | int linelen = strlen(line); |
| 366 | enum line_type type; |
| 367 | |
| 368 | for (type = 0; type < ARRAY_SIZE(line_info); type++) |
| 369 | /* Case insensitive search matches Signed-off-by lines better. */ |
| 370 | if (linelen >= line_info[type].linelen && |
| 371 | !strncasecmp(line_info[type].line, line, line_info[type].linelen)) |
| 372 | return type; |
| 373 | |
| 374 | return LINE_DEFAULT; |
| 375 | } |
| 376 | |
| 377 | static inline int |
| 378 | get_line_attr(enum line_type type) |
| 379 | { |
| 380 | assert(type < ARRAY_SIZE(line_info)); |
| 381 | return COLOR_PAIR(type) | line_info[type].attr; |
| 382 | } |
| 383 | |
| 384 | static void |
| 385 | init_colors(void) |
| 386 | { |
| 387 | int default_bg = COLOR_BLACK; |
| 388 | int default_fg = COLOR_WHITE; |
| 389 | enum line_type type; |
| 390 | |
| 391 | start_color(); |
| 392 | |
| 393 | if (use_default_colors() != ERR) { |
| 394 | default_bg = -1; |
| 395 | default_fg = -1; |
| 396 | } |
| 397 | |
| 398 | for (type = 0; type < ARRAY_SIZE(line_info); type++) { |
| 399 | struct line_info *info = &line_info[type]; |
| 400 | int bg = info->bg == COLOR_DEFAULT ? default_bg : info->bg; |
| 401 | int fg = info->fg == COLOR_DEFAULT ? default_fg : info->fg; |
| 402 | |
| 403 | init_pair(type, fg, bg); |
| 404 | } |
| 405 | } |
| 406 | |
| 407 | |
| 408 | /* |
| 409 | * Viewer |
| 410 | */ |
| 411 | |
| 412 | struct view { |
| 413 | char *name; |
| 414 | char *cmd; |
| 415 | char *id; |
| 416 | |
| 417 | /* Rendering */ |
| 418 | int (*read)(struct view *, char *); |
| 419 | int (*draw)(struct view *, unsigned int); |
| 420 | size_t objsize; /* Size of objects in the line index */ |
| 421 | |
| 422 | char cmdbuf[SIZEOF_CMD]; |
| 423 | |
| 424 | WINDOW *win; |
| 425 | WINDOW *title; |
| 426 | int height, width; |
| 427 | |
| 428 | /* Navigation */ |
| 429 | unsigned long offset; /* Offset of the window top */ |
| 430 | unsigned long lineno; /* Current line number */ |
| 431 | |
| 432 | /* Buffering */ |
| 433 | unsigned long lines; /* Total number of lines */ |
| 434 | void **line; /* Line index */ |
| 435 | |
| 436 | /* Loading */ |
| 437 | FILE *pipe; |
| 438 | time_t start_time; |
| 439 | }; |
| 440 | |
| 441 | static int pager_draw(struct view *view, unsigned int lineno); |
| 442 | static int pager_read(struct view *view, char *line); |
| 443 | |
| 444 | static int main_draw(struct view *view, unsigned int lineno); |
| 445 | static int main_read(struct view *view, char *line); |
| 446 | |
| 447 | static void update_title(struct view *view); |
| 448 | |
| 449 | #define DIFF_CMD \ |
| 450 | "git log --stat -n1 %s ; echo; " \ |
| 451 | "git diff --find-copies-harder -B -C %s^ %s" |
| 452 | |
| 453 | #define LOG_CMD \ |
| 454 | "git log --cc --stat -n100 %s" |
| 455 | |
| 456 | #define MAIN_CMD \ |
| 457 | "git log --stat --pretty=raw %s" |
| 458 | |
| 459 | #define HELP_CMD \ |
| 460 | "man tig 2> /dev/null" |
| 461 | |
| 462 | /* The status window is used for polling keystrokes. */ |
| 463 | static WINDOW *status_win; |
| 464 | |
| 465 | /* The number of loading views. Controls when nodelay should be in effect when |
| 466 | * polling user input. */ |
| 467 | static unsigned int nloading; |
| 468 | |
| 469 | static struct view views[] = { |
| 470 | { "main", MAIN_CMD, ref_head, main_read, main_draw, sizeof(struct commit) }, |
| 471 | { "diff", DIFF_CMD, ref_commit, pager_read, pager_draw, sizeof(char) }, |
| 472 | { "log", LOG_CMD, ref_head, pager_read, pager_draw, sizeof(char) }, |
| 473 | { "help", HELP_CMD, ref_head, pager_read, pager_draw, sizeof(char) }, |
| 474 | }; |
| 475 | |
| 476 | #define VIEW(req) (&views[(req) - REQ_OFFSET - 1]) |
| 477 | |
| 478 | /* The display array of active views and the index of the current view. */ |
| 479 | static struct view *display[ARRAY_SIZE(views)]; |
| 480 | static unsigned int current_view; |
| 481 | |
| 482 | #define foreach_view(view, i) \ |
| 483 | for (i = 0; i < sizeof(display) && (view = display[i]); i++) |
| 484 | |
| 485 | |
| 486 | static void |
| 487 | redraw_view_from(struct view *view, int lineno) |
| 488 | { |
| 489 | assert(0 <= lineno && lineno < view->height); |
| 490 | |
| 491 | for (; lineno < view->height; lineno++) { |
| 492 | if (!view->draw(view, lineno)) |
| 493 | break; |
| 494 | } |
| 495 | |
| 496 | redrawwin(view->win); |
| 497 | wrefresh(view->win); |
| 498 | } |
| 499 | |
| 500 | static void |
| 501 | redraw_view(struct view *view) |
| 502 | { |
| 503 | wclear(view->win); |
| 504 | redraw_view_from(view, 0); |
| 505 | } |
| 506 | |
| 507 | static struct view * |
| 508 | resize_view(struct view *view) |
| 509 | { |
| 510 | int lines, cols; |
| 511 | |
| 512 | getmaxyx(stdscr, lines, cols); |
| 513 | |
| 514 | if (view->win) { |
| 515 | mvwin(view->win, 0, 0); |
| 516 | wresize(view->win, lines - 2, cols); |
| 517 | |
| 518 | } else { |
| 519 | view->win = newwin(lines - 2, 0, 0, 0); |
| 520 | if (!view->win) { |
| 521 | report("Failed to create %s view", view->name); |
| 522 | return NULL; |
| 523 | } |
| 524 | scrollok(view->win, TRUE); |
| 525 | |
| 526 | view->title = newwin(1, 0, lines - 2, 0); |
| 527 | if (!view->title) { |
| 528 | delwin(view->win); |
| 529 | view->win = NULL; |
| 530 | report("Failed to create title window"); |
| 531 | return NULL; |
| 532 | } |
| 533 | wbkgdset(view->title, get_line_attr(LINE_TITLE)); |
| 534 | |
| 535 | } |
| 536 | |
| 537 | getmaxyx(view->win, view->height, view->width); |
| 538 | |
| 539 | return view; |
| 540 | } |
| 541 | |
| 542 | |
| 543 | /* |
| 544 | * Navigation |
| 545 | */ |
| 546 | |
| 547 | /* Scrolling backend */ |
| 548 | static void |
| 549 | do_scroll_view(struct view *view, int lines) |
| 550 | { |
| 551 | /* The rendering expects the new offset. */ |
| 552 | view->offset += lines; |
| 553 | |
| 554 | assert(0 <= view->offset && view->offset < view->lines); |
| 555 | assert(lines); |
| 556 | |
| 557 | /* Redraw the whole screen if scrolling is pointless. */ |
| 558 | if (view->height < ABS(lines)) { |
| 559 | redraw_view(view); |
| 560 | |
| 561 | } else { |
| 562 | int line = lines > 0 ? view->height - lines : 0; |
| 563 | int end = line + ABS(lines); |
| 564 | |
| 565 | wscrl(view->win, lines); |
| 566 | |
| 567 | for (; line < end; line++) { |
| 568 | if (!view->draw(view, line)) |
| 569 | break; |
| 570 | } |
| 571 | } |
| 572 | |
| 573 | /* Move current line into the view. */ |
| 574 | if (view->lineno < view->offset) { |
| 575 | view->lineno = view->offset; |
| 576 | view->draw(view, 0); |
| 577 | |
| 578 | } else if (view->lineno >= view->offset + view->height) { |
| 579 | view->lineno = view->offset + view->height - 1; |
| 580 | view->draw(view, view->lineno - view->offset); |
| 581 | } |
| 582 | |
| 583 | assert(view->offset <= view->lineno && view->lineno < view->lines); |
| 584 | |
| 585 | redrawwin(view->win); |
| 586 | wrefresh(view->win); |
| 587 | report(""); |
| 588 | } |
| 589 | |
| 590 | /* Scroll frontend */ |
| 591 | static void |
| 592 | scroll_view(struct view *view, int request) |
| 593 | { |
| 594 | int lines = 1; |
| 595 | |
| 596 | switch (request) { |
| 597 | case REQ_SCROLL_PAGE_DOWN: |
| 598 | lines = view->height; |
| 599 | case REQ_SCROLL_LINE_DOWN: |
| 600 | if (view->offset + lines > view->lines) |
| 601 | lines = view->lines - view->offset; |
| 602 | |
| 603 | if (lines == 0 || view->offset + view->height >= view->lines) { |
| 604 | report("Already at last line"); |
| 605 | return; |
| 606 | } |
| 607 | break; |
| 608 | |
| 609 | case REQ_SCROLL_PAGE_UP: |
| 610 | lines = view->height; |
| 611 | case REQ_SCROLL_LINE_UP: |
| 612 | if (lines > view->offset) |
| 613 | lines = view->offset; |
| 614 | |
| 615 | if (lines == 0) { |
| 616 | report("Already at first line"); |
| 617 | return; |
| 618 | } |
| 619 | |
| 620 | lines = -lines; |
| 621 | break; |
| 622 | } |
| 623 | |
| 624 | do_scroll_view(view, lines); |
| 625 | } |
| 626 | |
| 627 | /* Cursor moving */ |
| 628 | static void |
| 629 | move_view(struct view *view, int request) |
| 630 | { |
| 631 | int steps; |
| 632 | |
| 633 | switch (request) { |
| 634 | case REQ_MOVE_FIRST_LINE: |
| 635 | steps = -view->lineno; |
| 636 | break; |
| 637 | |
| 638 | case REQ_MOVE_LAST_LINE: |
| 639 | steps = view->lines - view->lineno - 1; |
| 640 | break; |
| 641 | |
| 642 | case REQ_MOVE_PAGE_UP: |
| 643 | steps = view->height > view->lineno |
| 644 | ? -view->lineno : -view->height; |
| 645 | break; |
| 646 | |
| 647 | case REQ_MOVE_PAGE_DOWN: |
| 648 | steps = view->lineno + view->height >= view->lines |
| 649 | ? view->lines - view->lineno - 1 : view->height; |
| 650 | break; |
| 651 | |
| 652 | case REQ_MOVE_UP: |
| 653 | steps = -1; |
| 654 | break; |
| 655 | |
| 656 | case REQ_MOVE_DOWN: |
| 657 | steps = 1; |
| 658 | break; |
| 659 | } |
| 660 | |
| 661 | if (steps <= 0 && view->lineno == 0) { |
| 662 | report("Already at first line"); |
| 663 | return; |
| 664 | |
| 665 | } else if (steps >= 0 && view->lineno + 1 == view->lines) { |
| 666 | report("Already at last line"); |
| 667 | return; |
| 668 | } |
| 669 | |
| 670 | /* Move the current line */ |
| 671 | view->lineno += steps; |
| 672 | assert(0 <= view->lineno && view->lineno < view->lines); |
| 673 | |
| 674 | /* Repaint the old "current" line if we be scrolling */ |
| 675 | if (ABS(steps) < view->height) { |
| 676 | int prev_lineno = view->lineno - steps - view->offset; |
| 677 | |
| 678 | wmove(view->win, prev_lineno, 0); |
| 679 | wclrtoeol(view->win); |
| 680 | view->draw(view, view->lineno - steps - view->offset); |
| 681 | } |
| 682 | |
| 683 | /* Check whether the view needs to be scrolled */ |
| 684 | if (view->lineno < view->offset || |
| 685 | view->lineno >= view->offset + view->height) { |
| 686 | if (steps < 0 && -steps > view->offset) { |
| 687 | steps = -view->offset; |
| 688 | |
| 689 | } else if (steps > 0) { |
| 690 | if (view->lineno == view->lines - 1 && |
| 691 | view->lines > view->height) { |
| 692 | steps = view->lines - view->offset - 1; |
| 693 | if (steps >= view->height) |
| 694 | steps -= view->height - 1; |
| 695 | } |
| 696 | } |
| 697 | |
| 698 | do_scroll_view(view, steps); |
| 699 | return; |
| 700 | } |
| 701 | |
| 702 | /* Draw the current line */ |
| 703 | view->draw(view, view->lineno - view->offset); |
| 704 | |
| 705 | redrawwin(view->win); |
| 706 | wrefresh(view->win); |
| 707 | report(""); |
| 708 | } |
| 709 | |
| 710 | |
| 711 | /* |
| 712 | * Incremental updating |
| 713 | */ |
| 714 | |
| 715 | static bool |
| 716 | begin_update(struct view *view) |
| 717 | { |
| 718 | char *id = view->id; |
| 719 | |
| 720 | if (snprintf(view->cmdbuf, sizeof(view->cmdbuf), view->cmd, |
| 721 | id, id, id) < sizeof(view->cmdbuf)) |
| 722 | view->pipe = popen(view->cmdbuf, "r"); |
| 723 | |
| 724 | if (!view->pipe) |
| 725 | return FALSE; |
| 726 | |
| 727 | if (nloading++ == 0) |
| 728 | nodelay(status_win, TRUE); |
| 729 | |
| 730 | view->offset = 0; |
| 731 | view->lines = 0; |
| 732 | view->lineno = 0; |
| 733 | |
| 734 | if (view->line) { |
| 735 | int i; |
| 736 | |
| 737 | for (i = 0; i < view->lines; i++) |
| 738 | if (view->line[i]) |
| 739 | free(view->line[i]); |
| 740 | |
| 741 | free(view->line); |
| 742 | view->line = NULL; |
| 743 | } |
| 744 | |
| 745 | view->start_time = time(NULL); |
| 746 | |
| 747 | return TRUE; |
| 748 | } |
| 749 | |
| 750 | static void |
| 751 | end_update(struct view *view) |
| 752 | { |
| 753 | if (nloading-- == 1) |
| 754 | nodelay(status_win, FALSE); |
| 755 | |
| 756 | pclose(view->pipe); |
| 757 | view->pipe = NULL; |
| 758 | } |
| 759 | |
| 760 | static int |
| 761 | update_view(struct view *view) |
| 762 | { |
| 763 | char buffer[BUFSIZ]; |
| 764 | char *line; |
| 765 | void **tmp; |
| 766 | /* The number of lines to read. If too low it will cause too much |
| 767 | * redrawing (and possible flickering), if too high responsiveness |
| 768 | * will suffer. */ |
| 769 | int lines = view->height; |
| 770 | int redraw_from = -1; |
| 771 | |
| 772 | if (!view->pipe) |
| 773 | return TRUE; |
| 774 | |
| 775 | /* Only redraw if lines are visible. */ |
| 776 | if (view->offset + view->height >= view->lines) |
| 777 | redraw_from = view->lines - view->offset; |
| 778 | |
| 779 | tmp = realloc(view->line, sizeof(*view->line) * (view->lines + lines)); |
| 780 | if (!tmp) |
| 781 | goto alloc_error; |
| 782 | |
| 783 | view->line = tmp; |
| 784 | |
| 785 | while ((line = fgets(buffer, sizeof(buffer), view->pipe))) { |
| 786 | int linelen; |
| 787 | |
| 788 | linelen = strlen(line); |
| 789 | if (linelen) |
| 790 | line[linelen - 1] = 0; |
| 791 | |
| 792 | if (!view->read(view, line)) |
| 793 | goto alloc_error; |
| 794 | |
| 795 | if (lines-- == 1) |
| 796 | break; |
| 797 | } |
| 798 | |
| 799 | /* CPU hogilicious! */ |
| 800 | update_title(view); |
| 801 | |
| 802 | if (redraw_from >= 0) { |
| 803 | /* If this is an incremental update, redraw the previous line |
| 804 | * since for commits some members could have changed when |
| 805 | * loading the main view. */ |
| 806 | if (redraw_from > 0) |
| 807 | redraw_from--; |
| 808 | |
| 809 | /* Incrementally draw avoids flickering. */ |
| 810 | redraw_view_from(view, redraw_from); |
| 811 | } |
| 812 | |
| 813 | if (ferror(view->pipe)) { |
| 814 | report("Failed to read %s: %s", view->cmd, strerror(errno)); |
| 815 | goto end; |
| 816 | |
| 817 | } else if (feof(view->pipe)) { |
| 818 | time_t secs = time(NULL) - view->start_time; |
| 819 | |
| 820 | if (view == VIEW(REQ_VIEW_HELP)) { |
| 821 | report("%s", HELP); |
| 822 | goto end; |
| 823 | } |
| 824 | |
| 825 | report("Loaded %d lines in %ld second%s", view->lines, secs, |
| 826 | secs == 1 ? "" : "s"); |
| 827 | goto end; |
| 828 | } |
| 829 | |
| 830 | return TRUE; |
| 831 | |
| 832 | alloc_error: |
| 833 | report("Allocation failure"); |
| 834 | |
| 835 | end: |
| 836 | end_update(view); |
| 837 | return FALSE; |
| 838 | } |
| 839 | |
| 840 | static struct view * |
| 841 | switch_view(struct view *prev, int request) |
| 842 | { |
| 843 | struct view *view = VIEW(request); |
| 844 | struct view *displayed; |
| 845 | int i; |
| 846 | |
| 847 | if (!view->win && !resize_view(view)) |
| 848 | return prev; |
| 849 | |
| 850 | if (view == prev) { |
| 851 | foreach_view (displayed, i) |
| 852 | /* count */ ; |
| 853 | |
| 854 | if (i == 1) { |
| 855 | report("Already in %s view", view->name); |
| 856 | return view; |
| 857 | } |
| 858 | |
| 859 | report("FIXME: Maximize"); |
| 860 | return view; |
| 861 | |
| 862 | } else { |
| 863 | foreach_view (displayed, i) { |
| 864 | if (view == displayed) { |
| 865 | current_view = i; |
| 866 | /* Blur out the title of the previous view. */ |
| 867 | update_title(prev); |
| 868 | report("Switching to %s view", view->name); |
| 869 | return view; |
| 870 | } |
| 871 | } |
| 872 | |
| 873 | /* Split to diff view */ |
| 874 | if (i == 1 && |
| 875 | SCALE_SPLIT_VIEW(prev->height) > 3 && |
| 876 | prev == VIEW(REQ_VIEW_MAIN) && |
| 877 | view == VIEW(REQ_VIEW_DIFF)) { |
| 878 | view->height = SCALE_SPLIT_VIEW(prev->height) - 1; |
| 879 | prev->height -= view->height + 1; |
| 880 | |
| 881 | wresize(prev->win, prev->height, prev->width); |
| 882 | mvwin(prev->title, prev->height, 0); |
| 883 | |
| 884 | wresize(view->win, view->height, view->width); |
| 885 | mvwin(view->win, prev->height + 1, 0); |
| 886 | mvwin(view->title, prev->height + 1 + view->height, 0); |
| 887 | wrefresh(view->win); |
| 888 | current_view++; |
| 889 | update_title(prev); |
| 890 | } |
| 891 | } |
| 892 | |
| 893 | /* Continue loading split views in the background. */ |
| 894 | if (prev && prev->pipe && current_view < 1) |
| 895 | end_update(prev); |
| 896 | |
| 897 | if (begin_update(view)) { |
| 898 | /* Clear the old view and let the incremental updating refill |
| 899 | * the screen. */ |
| 900 | display[current_view] = view; |
| 901 | wclear(view->win); |
| 902 | report("Loading..."); |
| 903 | } |
| 904 | |
| 905 | return view; |
| 906 | } |
| 907 | |
| 908 | |
| 909 | /* Process keystrokes */ |
| 910 | static int |
| 911 | view_driver(struct view *view, int key) |
| 912 | { |
| 913 | int request = get_request(key); |
| 914 | int i; |
| 915 | |
| 916 | assert(view); |
| 917 | |
| 918 | switch (request) { |
| 919 | case REQ_MOVE_UP: |
| 920 | case REQ_MOVE_DOWN: |
| 921 | case REQ_MOVE_PAGE_UP: |
| 922 | case REQ_MOVE_PAGE_DOWN: |
| 923 | case REQ_MOVE_FIRST_LINE: |
| 924 | case REQ_MOVE_LAST_LINE: |
| 925 | move_view(view, request); |
| 926 | break; |
| 927 | |
| 928 | case REQ_SCROLL_LINE_DOWN: |
| 929 | case REQ_SCROLL_LINE_UP: |
| 930 | case REQ_SCROLL_PAGE_DOWN: |
| 931 | case REQ_SCROLL_PAGE_UP: |
| 932 | scroll_view(view, request); |
| 933 | break; |
| 934 | |
| 935 | case REQ_VIEW_MAIN: |
| 936 | case REQ_VIEW_DIFF: |
| 937 | case REQ_VIEW_LOG: |
| 938 | case REQ_VIEW_HELP: |
| 939 | view = switch_view(view, request); |
| 940 | break; |
| 941 | |
| 942 | case REQ_TOGGLE_LINE_NUMBERS: |
| 943 | opt_line_number = !opt_line_number; |
| 944 | redraw_view(view); |
| 945 | break; |
| 946 | |
| 947 | case REQ_STOP_LOADING: |
| 948 | foreach_view (view, i) |
| 949 | if (view->pipe) |
| 950 | end_update(view); |
| 951 | break; |
| 952 | |
| 953 | case REQ_SHOW_VERSION: |
| 954 | report("Version: %s", VERSION); |
| 955 | return TRUE; |
| 956 | |
| 957 | case REQ_SCREEN_REDRAW: |
| 958 | redraw_view(view); |
| 959 | break; |
| 960 | |
| 961 | case REQ_SCREEN_UPDATE: |
| 962 | doupdate(); |
| 963 | return TRUE; |
| 964 | |
| 965 | case REQ_QUIT: |
| 966 | return FALSE; |
| 967 | |
| 968 | default: |
| 969 | /* An unknown key will show most commonly used commands. */ |
| 970 | report("%s", HELP); |
| 971 | return TRUE; |
| 972 | } |
| 973 | |
| 974 | return TRUE; |
| 975 | } |
| 976 | |
| 977 | |
| 978 | /* |
| 979 | * Rendering |
| 980 | */ |
| 981 | |
| 982 | static int |
| 983 | pager_draw(struct view *view, unsigned int lineno) |
| 984 | { |
| 985 | enum line_type type; |
| 986 | char *line; |
| 987 | int linelen; |
| 988 | int attr; |
| 989 | |
| 990 | if (view->offset + lineno >= view->lines) |
| 991 | return FALSE; |
| 992 | |
| 993 | line = view->line[view->offset + lineno]; |
| 994 | type = get_line_type(line); |
| 995 | |
| 996 | if (view->offset + lineno == view->lineno) { |
| 997 | if (type == LINE_COMMIT) |
| 998 | string_copy(ref_commit, line + 7); |
| 999 | type = LINE_CURSOR; |
| 1000 | } |
| 1001 | |
| 1002 | attr = get_line_attr(type); |
| 1003 | wattrset(view->win, attr); |
| 1004 | |
| 1005 | linelen = strlen(line); |
| 1006 | linelen = MIN(linelen, view->width); |
| 1007 | |
| 1008 | if (opt_line_number) { |
| 1009 | unsigned int real_lineno = view->offset + lineno + 1; |
| 1010 | int col = 0; |
| 1011 | |
| 1012 | if (real_lineno == 1 || (real_lineno % opt_num_interval) == 0) |
| 1013 | mvwprintw(view->win, lineno, 0, "%4d: ", real_lineno); |
| 1014 | else |
| 1015 | mvwaddstr(view->win, lineno, 0, " : "); |
| 1016 | |
| 1017 | while (line) { |
| 1018 | if (*line == '\t') { |
| 1019 | waddnstr(view->win, " ", 8 - (col % 8)); |
| 1020 | col += 8 - (col % 8); |
| 1021 | line++; |
| 1022 | |
| 1023 | } else { |
| 1024 | char *tab = strchr(line, '\t'); |
| 1025 | |
| 1026 | if (tab) |
| 1027 | waddnstr(view->win, line, tab - line); |
| 1028 | else |
| 1029 | waddstr(view->win, line); |
| 1030 | col += tab - line; |
| 1031 | line = tab; |
| 1032 | } |
| 1033 | } |
| 1034 | waddstr(view->win, line); |
| 1035 | |
| 1036 | } else { |
| 1037 | #if 0 |
| 1038 | /* NOTE: Code for only highlighting the text on the cursor line. |
| 1039 | * Kept since I've not yet decided whether to highlight the |
| 1040 | * entire line or not. --fonseca */ |
| 1041 | /* No empty lines makes cursor drawing and clearing implicit. */ |
| 1042 | if (!*line) |
| 1043 | line = " ", linelen = 1; |
| 1044 | #endif |
| 1045 | mvwaddnstr(view->win, lineno, 0, line, linelen); |
| 1046 | } |
| 1047 | |
| 1048 | /* Paint the rest of the line if it's the cursor line. */ |
| 1049 | if (type == LINE_CURSOR) |
| 1050 | wchgat(view->win, -1, 0, type, NULL); |
| 1051 | |
| 1052 | return TRUE; |
| 1053 | } |
| 1054 | |
| 1055 | static int |
| 1056 | pager_read(struct view *view, char *line) |
| 1057 | { |
| 1058 | view->line[view->lines] = strdup(line); |
| 1059 | if (!view->line[view->lines]) |
| 1060 | return FALSE; |
| 1061 | |
| 1062 | view->lines++; |
| 1063 | return TRUE; |
| 1064 | } |
| 1065 | |
| 1066 | static int |
| 1067 | main_draw(struct view *view, unsigned int lineno) |
| 1068 | { |
| 1069 | char buf[DATE_COLS + 1]; |
| 1070 | struct commit *commit; |
| 1071 | enum line_type type; |
| 1072 | int cols = 0; |
| 1073 | size_t timelen; |
| 1074 | |
| 1075 | if (view->offset + lineno >= view->lines) |
| 1076 | return FALSE; |
| 1077 | |
| 1078 | commit = view->line[view->offset + lineno]; |
| 1079 | if (!*commit->author) |
| 1080 | return FALSE; |
| 1081 | |
| 1082 | if (view->offset + lineno == view->lineno) { |
| 1083 | string_copy(ref_commit, commit->id); |
| 1084 | type = LINE_CURSOR; |
| 1085 | } else { |
| 1086 | type = LINE_MAIN_COMMIT; |
| 1087 | } |
| 1088 | |
| 1089 | wmove(view->win, lineno, cols); |
| 1090 | wattrset(view->win, get_line_attr(LINE_MAIN_DATE)); |
| 1091 | |
| 1092 | timelen = strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time); |
| 1093 | waddnstr(view->win, buf, timelen); |
| 1094 | waddstr(view->win, " "); |
| 1095 | |
| 1096 | cols += DATE_COLS; |
| 1097 | wmove(view->win, lineno, cols); |
| 1098 | wattrset(view->win, get_line_attr(LINE_MAIN_AUTHOR)); |
| 1099 | |
| 1100 | if (strlen(commit->author) > 19) { |
| 1101 | waddnstr(view->win, commit->author, 18); |
| 1102 | wattrset(view->win, get_line_attr(LINE_MAIN_DELIM)); |
| 1103 | waddch(view->win, '~'); |
| 1104 | } else { |
| 1105 | waddstr(view->win, commit->author); |
| 1106 | } |
| 1107 | |
| 1108 | cols += 20; |
| 1109 | wattrset(view->win, A_NORMAL); |
| 1110 | mvwaddch(view->win, lineno, cols, ACS_LTEE); |
| 1111 | wattrset(view->win, get_line_attr(type)); |
| 1112 | mvwaddstr(view->win, lineno, cols + 2, commit->title); |
| 1113 | wattrset(view->win, A_NORMAL); |
| 1114 | |
| 1115 | return TRUE; |
| 1116 | } |
| 1117 | |
| 1118 | /* Reads git log --pretty=raw output and parses it into the commit struct. */ |
| 1119 | static int |
| 1120 | main_read(struct view *view, char *line) |
| 1121 | { |
| 1122 | enum line_type type = get_line_type(line); |
| 1123 | struct commit *commit; |
| 1124 | |
| 1125 | switch (type) { |
| 1126 | case LINE_COMMIT: |
| 1127 | commit = calloc(1, sizeof(struct commit)); |
| 1128 | if (!commit) |
| 1129 | return FALSE; |
| 1130 | |
| 1131 | line += STRING_SIZE("commit "); |
| 1132 | |
| 1133 | view->line[view->lines++] = commit; |
| 1134 | string_copy(commit->id, line); |
| 1135 | break; |
| 1136 | |
| 1137 | case LINE_AUTHOR_IDENT: |
| 1138 | { |
| 1139 | char *ident = line + STRING_SIZE("author "); |
| 1140 | char *end = strchr(ident, '<'); |
| 1141 | |
| 1142 | if (end) { |
| 1143 | for (; end > ident && isspace(end[-1]); end--) ; |
| 1144 | *end = 0; |
| 1145 | } |
| 1146 | |
| 1147 | commit = view->line[view->lines - 1]; |
| 1148 | string_copy(commit->author, ident); |
| 1149 | |
| 1150 | /* Parse epoch and timezone */ |
| 1151 | if (end) { |
| 1152 | char *secs = strchr(end + 1, '>'); |
| 1153 | char *zone; |
| 1154 | time_t time; |
| 1155 | |
| 1156 | if (!secs || secs[1] != ' ') |
| 1157 | break; |
| 1158 | |
| 1159 | secs += 2; |
| 1160 | time = (time_t) atol(secs); |
| 1161 | zone = strchr(secs, ' '); |
| 1162 | if (zone && strlen(zone) == STRING_SIZE(" +0700")) { |
| 1163 | long tz; |
| 1164 | |
| 1165 | zone++; |
| 1166 | tz = ('0' - zone[1]) * 60 * 60 * 10; |
| 1167 | tz += ('0' - zone[2]) * 60 * 60; |
| 1168 | tz += ('0' - zone[3]) * 60; |
| 1169 | tz += ('0' - zone[4]) * 60; |
| 1170 | |
| 1171 | if (zone[0] == '-') |
| 1172 | tz = -tz; |
| 1173 | |
| 1174 | time -= tz; |
| 1175 | } |
| 1176 | gmtime_r(&time, &commit->time); |
| 1177 | } |
| 1178 | break; |
| 1179 | } |
| 1180 | default: |
| 1181 | /* We should only ever end up here if there has already been a |
| 1182 | * commit line, however, be safe. */ |
| 1183 | if (view->lines == 0) |
| 1184 | break; |
| 1185 | |
| 1186 | /* Fill in the commit title if it has not already been set. */ |
| 1187 | commit = view->line[view->lines - 1]; |
| 1188 | if (commit->title[0]) |
| 1189 | break; |
| 1190 | |
| 1191 | /* Require titles to start with a non-space character at the |
| 1192 | * offset used by git log. */ |
| 1193 | if (strncmp(line, " ", 4) || |
| 1194 | isspace(line[5])) |
| 1195 | break; |
| 1196 | |
| 1197 | string_copy(commit->title, line + 4); |
| 1198 | } |
| 1199 | |
| 1200 | return TRUE; |
| 1201 | } |
| 1202 | |
| 1203 | |
| 1204 | /* |
| 1205 | * Main |
| 1206 | */ |
| 1207 | |
| 1208 | static void |
| 1209 | quit(int sig) |
| 1210 | { |
| 1211 | if (status_win) |
| 1212 | delwin(status_win); |
| 1213 | endwin(); |
| 1214 | |
| 1215 | /* FIXME: Shutdown gracefully. */ |
| 1216 | |
| 1217 | exit(0); |
| 1218 | } |
| 1219 | |
| 1220 | static void die(const char *err, ...) |
| 1221 | { |
| 1222 | va_list args; |
| 1223 | |
| 1224 | endwin(); |
| 1225 | |
| 1226 | va_start(args, err); |
| 1227 | fputs("tig: ", stderr); |
| 1228 | vfprintf(stderr, err, args); |
| 1229 | fputs("\n", stderr); |
| 1230 | va_end(args); |
| 1231 | |
| 1232 | exit(1); |
| 1233 | } |
| 1234 | |
| 1235 | static void |
| 1236 | update_title(struct view *view) |
| 1237 | { |
| 1238 | werase(view->title); |
| 1239 | wmove(view->title, 0, 0); |
| 1240 | |
| 1241 | if (view == &views[current_view]) |
| 1242 | wattrset(view->title, A_BOLD); |
| 1243 | else |
| 1244 | wattrset(view->title, A_NORMAL); |
| 1245 | |
| 1246 | /* [main] ref: 334b506... - line 6 of 4383 (0%) */ |
| 1247 | wprintw(view->title, "[%s] ref: %s", view->name, ref_commit); |
| 1248 | if (view->lines) { |
| 1249 | wprintw(view->title, " - line %d of %d (%d%%)", |
| 1250 | view->lineno + 1, |
| 1251 | view->lines, |
| 1252 | (view->lineno + 1) * 100 / view->lines); |
| 1253 | } |
| 1254 | |
| 1255 | wrefresh(view->title); |
| 1256 | } |
| 1257 | |
| 1258 | /* Update status and title window. */ |
| 1259 | static void |
| 1260 | report(const char *msg, ...) |
| 1261 | { |
| 1262 | va_list args; |
| 1263 | |
| 1264 | va_start(args, msg); |
| 1265 | |
| 1266 | /* Update the title window first, so the cursor ends up in the status |
| 1267 | * window. */ |
| 1268 | update_title(display[current_view]); |
| 1269 | |
| 1270 | werase(status_win); |
| 1271 | wmove(status_win, 0, 0); |
| 1272 | vwprintw(status_win, msg, args); |
| 1273 | wrefresh(status_win); |
| 1274 | |
| 1275 | va_end(args); |
| 1276 | } |
| 1277 | |
| 1278 | int |
| 1279 | main(int argc, char *argv[]) |
| 1280 | { |
| 1281 | int x, y; |
| 1282 | int request; |
| 1283 | int git_cmd; |
| 1284 | |
| 1285 | signal(SIGINT, quit); |
| 1286 | |
| 1287 | git_cmd = parse_options(argc, argv); |
| 1288 | if (git_cmd < 0) |
| 1289 | return 0; |
| 1290 | if (git_cmd < argc) { |
| 1291 | die("Too many options"); |
| 1292 | } |
| 1293 | |
| 1294 | request = opt_request; |
| 1295 | |
| 1296 | initscr(); /* Initialize the curses library */ |
| 1297 | nonl(); /* Tell curses not to do NL->CR/NL on output */ |
| 1298 | cbreak(); /* Take input chars one at a time, no wait for \n */ |
| 1299 | noecho(); /* Don't echo input */ |
| 1300 | leaveok(stdscr, TRUE); |
| 1301 | |
| 1302 | if (has_colors()) |
| 1303 | init_colors(); |
| 1304 | |
| 1305 | getmaxyx(stdscr, y, x); |
| 1306 | status_win = newwin(1, 0, y - 1, 0); |
| 1307 | if (!status_win) |
| 1308 | die("Failed to create status window"); |
| 1309 | |
| 1310 | /* Enable keyboard mapping */ |
| 1311 | keypad(status_win, TRUE); |
| 1312 | wbkgdset(status_win, get_line_attr(LINE_STATUS)); |
| 1313 | |
| 1314 | while (view_driver(display[current_view], request)) { |
| 1315 | struct view *view; |
| 1316 | int i; |
| 1317 | |
| 1318 | foreach_view (view, i) { |
| 1319 | if (view->pipe) { |
| 1320 | update_view(view); |
| 1321 | } |
| 1322 | } |
| 1323 | |
| 1324 | /* Refresh, accept single keystroke of input */ |
| 1325 | request = wgetch(status_win); |
| 1326 | if (request == KEY_RESIZE) { |
| 1327 | int lines, cols; |
| 1328 | |
| 1329 | getmaxyx(stdscr, lines, cols); |
| 1330 | |
| 1331 | mvwin(status_win, lines - 1, 0); |
| 1332 | wresize(status_win, 1, cols - 1); |
| 1333 | } |
| 1334 | } |
| 1335 | |
| 1336 | quit(0); |
| 1337 | |
| 1338 | return 0; |
| 1339 | } |
| 1340 | |
| 1341 | /** |
| 1342 | * TODO |
| 1343 | * ---- |
| 1344 | * Features that should be explored. |
| 1345 | * |
| 1346 | * - Dynamic scaling of line number indentation. |
| 1347 | * |
| 1348 | * - Proper command line handling; ability to take the command that should be |
| 1349 | * shown. Example: |
| 1350 | * |
| 1351 | * $ tig log -p |
| 1352 | * |
| 1353 | * - Internal command line (exmode-inspired) which allows to specify what git |
| 1354 | * log or git diff command to run. Example: |
| 1355 | * |
| 1356 | * :log -p |
| 1357 | * |
| 1358 | * - Proper resizing support. I am yet to figure out whether catching SIGWINCH |
| 1359 | * is preferred over using ncurses' built-in support for resizing. |
| 1360 | * |
| 1361 | * - Locale support. |
| 1362 | * |
| 1363 | * COPYRIGHT |
| 1364 | * --------- |
| 1365 | * Copyright (c) Jonas Fonseca <fonseca@diku.dk>, 2006 |
| 1366 | * |
| 1367 | * This program is free software; you can redistribute it and/or modify |
| 1368 | * it under the terms of the GNU General Public License as published by |
| 1369 | * the Free Software Foundation; either version 2 of the License, or |
| 1370 | * (at your option) any later version. |
| 1371 | * |
| 1372 | * SEE ALSO |
| 1373 | * -------- |
| 1374 | * [verse] |
| 1375 | * link:http://www.kernel.org/pub/software/scm/git/docs/[git(7)], |
| 1376 | * link:http://www.kernel.org/pub/software/scm/cogito/docs/[cogito(7)] |
| 1377 | * gitk(1): git repository browser written using tcl/tk, |
| 1378 | * gitview(1): git repository browser written using python/gtk. |
| 1379 | **/ |