| 1 | /** |
| 2 | * TIG(1) |
| 3 | * ====== |
| 4 | * |
| 5 | * NAME |
| 6 | * ---- |
| 7 | * tig - text-mode interface for git |
| 8 | * |
| 9 | * SYNOPSIS |
| 10 | * -------- |
| 11 | * [verse] |
| 12 | * tig |
| 13 | * tig log [git log options] |
| 14 | * tig diff [git diff options] |
| 15 | * tig < [git log or git diff output] |
| 16 | * |
| 17 | * DESCRIPTION |
| 18 | * ----------- |
| 19 | * Browse changes in a git repository. |
| 20 | * |
| 21 | * OPTIONS |
| 22 | * ------- |
| 23 | * |
| 24 | * None. |
| 25 | * |
| 26 | **/ |
| 27 | |
| 28 | #define DEBUG |
| 29 | |
| 30 | #ifndef DEBUG |
| 31 | #define NDEBUG |
| 32 | #endif |
| 33 | |
| 34 | #include <assert.h> |
| 35 | #include <ctype.h> |
| 36 | #include <signal.h> |
| 37 | #include <stdarg.h> |
| 38 | #include <stdio.h> |
| 39 | #include <stdlib.h> |
| 40 | #include <string.h> |
| 41 | |
| 42 | #include <curses.h> |
| 43 | #include <form.h> |
| 44 | |
| 45 | static void die(const char *err, ...); |
| 46 | static void report(const char *msg, ...); |
| 47 | |
| 48 | #define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0])) |
| 49 | |
| 50 | #define KEY_TAB 9 |
| 51 | #define KEY_ESC 27 |
| 52 | #define KEY_DEL 127 |
| 53 | |
| 54 | #define REQ_OFFSET (MAX_COMMAND + 1) |
| 55 | |
| 56 | /* Requests for switching between the different views. */ |
| 57 | #define REQ_DIFF (REQ_OFFSET + 0) |
| 58 | #define REQ_LOG (REQ_OFFSET + 1) |
| 59 | #define REQ_MAIN (REQ_OFFSET + 2) |
| 60 | #define REQ_VIEWS (REQ_OFFSET + 3) |
| 61 | |
| 62 | #define REQ_QUIT (REQ_OFFSET + 11) |
| 63 | #define REQ_VERSION (REQ_OFFSET + 12) |
| 64 | #define REQ_STOP (REQ_OFFSET + 13) |
| 65 | #define REQ_UPDATE (REQ_OFFSET + 14) |
| 66 | #define REQ_REDRAW (REQ_OFFSET + 15) |
| 67 | #define REQ_FIRST_LINE (REQ_OFFSET + 16) |
| 68 | #define REQ_LAST_LINE (REQ_OFFSET + 17) |
| 69 | |
| 70 | #define COLOR_CURSOR 42 |
| 71 | |
| 72 | /** |
| 73 | * KEYS |
| 74 | * ---- |
| 75 | * |
| 76 | * d:: |
| 77 | * diff |
| 78 | * l:: |
| 79 | * log |
| 80 | * q:: |
| 81 | * quit |
| 82 | * r:: |
| 83 | * redraw screen |
| 84 | * s:: |
| 85 | * stop all background loading |
| 86 | * j:: |
| 87 | * down |
| 88 | * k:: |
| 89 | * up |
| 90 | * h, ?:: |
| 91 | * help |
| 92 | * v:: |
| 93 | * version |
| 94 | * |
| 95 | **/ |
| 96 | |
| 97 | #define HELP "(d)iff, (l)og, (m)ain, (q)uit, (v)ersion, (h)elp" |
| 98 | |
| 99 | struct keymap { |
| 100 | int alias; |
| 101 | int request; |
| 102 | }; |
| 103 | |
| 104 | struct keymap keymap[] = { |
| 105 | /* Cursor navigation */ |
| 106 | { KEY_UP, REQ_PREV_LINE }, |
| 107 | { 'k', REQ_PREV_LINE }, |
| 108 | { KEY_DOWN, REQ_NEXT_LINE }, |
| 109 | { 'j', REQ_NEXT_LINE }, |
| 110 | { KEY_HOME, REQ_FIRST_LINE }, |
| 111 | { KEY_END, REQ_LAST_LINE }, |
| 112 | |
| 113 | /* Scrolling */ |
| 114 | { KEY_IC, REQ_SCR_BLINE }, /* scroll field backward a line */ |
| 115 | { KEY_DC, REQ_SCR_FLINE }, /* scroll field forward a line */ |
| 116 | { KEY_NPAGE, REQ_SCR_FPAGE }, /* scroll field forward a page */ |
| 117 | { KEY_PPAGE, REQ_SCR_BPAGE }, /* scroll field backward a page */ |
| 118 | { 'w', REQ_SCR_FHPAGE }, /* scroll field forward half page */ |
| 119 | { 's', REQ_SCR_BHPAGE }, /* scroll field backward half page */ |
| 120 | |
| 121 | { 'd', REQ_DIFF }, |
| 122 | { 'l', REQ_LOG }, |
| 123 | { 'm', REQ_MAIN }, |
| 124 | |
| 125 | /* No input from wgetch() with nodelay() enabled. */ |
| 126 | { ERR, REQ_UPDATE }, |
| 127 | |
| 128 | { KEY_ESC, REQ_QUIT }, |
| 129 | { 'q', REQ_QUIT }, |
| 130 | { 's', REQ_STOP }, |
| 131 | { 'v', REQ_VERSION }, |
| 132 | { 'r', REQ_REDRAW }, |
| 133 | }; |
| 134 | |
| 135 | static int |
| 136 | get_request(int request) |
| 137 | { |
| 138 | int i; |
| 139 | |
| 140 | for (i = 0; i < ARRAY_SIZE(keymap); i++) |
| 141 | if (keymap[i].alias == request) |
| 142 | return keymap[i].request; |
| 143 | |
| 144 | return request; |
| 145 | } |
| 146 | |
| 147 | |
| 148 | /* |
| 149 | * Viewer |
| 150 | */ |
| 151 | |
| 152 | struct view { |
| 153 | char *name; |
| 154 | char *cmd; |
| 155 | char *id; |
| 156 | |
| 157 | |
| 158 | /* Rendering */ |
| 159 | int (*read)(struct view *, char *); |
| 160 | int (*draw)(struct view *, unsigned int); |
| 161 | size_t objsize; /* Size of objects in the line index */ |
| 162 | |
| 163 | WINDOW *win; |
| 164 | int height, width; |
| 165 | |
| 166 | /* Navigation */ |
| 167 | unsigned long offset; /* Offset of the window top */ |
| 168 | unsigned long lineno; /* Current line number */ |
| 169 | |
| 170 | /* Buffering */ |
| 171 | unsigned long lines; /* Total number of lines */ |
| 172 | void **line; /* Line index */ |
| 173 | |
| 174 | /* Loading */ |
| 175 | FILE *pipe; |
| 176 | }; |
| 177 | |
| 178 | struct commit { |
| 179 | char id[41]; |
| 180 | char title[75]; |
| 181 | }; |
| 182 | |
| 183 | static int pager_draw(struct view *view, unsigned int lineno); |
| 184 | static int pager_read(struct view *view, char *line); |
| 185 | |
| 186 | static int main_draw(struct view *view, unsigned int lineno); |
| 187 | static int main_read(struct view *view, char *line); |
| 188 | |
| 189 | #define DIFF_CMD \ |
| 190 | "git log --stat -n1 %s ; echo; " \ |
| 191 | "git diff --find-copies-harder -B -C %s^ %s" |
| 192 | |
| 193 | #define LOG_CMD \ |
| 194 | "git log --stat -n100 %s" |
| 195 | |
| 196 | #define MAIN_CMD \ |
| 197 | "git log --stat --pretty=raw %s" |
| 198 | |
| 199 | /* The status window at the bottom. Used for polling keystrokes. */ |
| 200 | static WINDOW *status_win; |
| 201 | |
| 202 | #define SIZEOF_ID 1024 |
| 203 | #define SIZEOF_VIEWS (REQ_VIEWS - REQ_OFFSET) |
| 204 | |
| 205 | char head_id[SIZEOF_ID] = "HEAD"; |
| 206 | char commit_id[SIZEOF_ID] = "HEAD"; |
| 207 | |
| 208 | static unsigned int current_view; |
| 209 | static unsigned int nloading; |
| 210 | |
| 211 | static struct view views[]; |
| 212 | static struct view *display[]; |
| 213 | |
| 214 | static struct view views[] = { |
| 215 | { "diff", DIFF_CMD, commit_id, pager_read, pager_draw, sizeof(char) }, |
| 216 | { "log", LOG_CMD, head_id, pager_read, pager_draw, sizeof(struct commit) }, |
| 217 | { "main", MAIN_CMD, head_id, main_read, main_draw }, |
| 218 | }; |
| 219 | |
| 220 | static struct view *display[ARRAY_SIZE(views)]; |
| 221 | |
| 222 | |
| 223 | #define foreach_view(view, i) \ |
| 224 | for (i = 0; i < sizeof(display) && (view = display[i]); i++) |
| 225 | |
| 226 | static void |
| 227 | redraw_view(struct view *view) |
| 228 | { |
| 229 | int lineno; |
| 230 | |
| 231 | wclear(view->win); |
| 232 | wmove(view->win, 0, 0); |
| 233 | |
| 234 | for (lineno = 0; lineno < view->height; lineno++) { |
| 235 | if (!view->draw(view, lineno)) |
| 236 | break; |
| 237 | } |
| 238 | |
| 239 | redrawwin(view->win); |
| 240 | wrefresh(view->win); |
| 241 | } |
| 242 | |
| 243 | /* FIXME: Fix percentage. */ |
| 244 | static void |
| 245 | report_position(struct view *view, int all) |
| 246 | { |
| 247 | report(all ? "line %d of %d (%d%%) viewing from %d" |
| 248 | : "line %d of %d", |
| 249 | view->lineno + 1, |
| 250 | view->lines, |
| 251 | view->lines ? view->offset * 100 / view->lines : 0, |
| 252 | view->offset); |
| 253 | } |
| 254 | |
| 255 | static void |
| 256 | move_view(struct view *view, int lines) |
| 257 | { |
| 258 | /* The rendering expects the new offset. */ |
| 259 | view->offset += lines; |
| 260 | |
| 261 | assert(0 <= view->offset && view->offset < view->lines); |
| 262 | assert(lines); |
| 263 | |
| 264 | { |
| 265 | int line = lines > 0 ? view->height - lines : 0; |
| 266 | int end = line + (lines > 0 ? lines : -lines); |
| 267 | |
| 268 | wscrl(view->win, lines); |
| 269 | |
| 270 | for (; line < end; line++) { |
| 271 | if (!view->draw(view, line)) |
| 272 | break; |
| 273 | } |
| 274 | } |
| 275 | |
| 276 | /* Move current line into the view. */ |
| 277 | if (view->lineno < view->offset) { |
| 278 | view->lineno = view->offset; |
| 279 | view->draw(view, 0); |
| 280 | |
| 281 | } else if (view->lineno >= view->offset + view->height) { |
| 282 | view->lineno = view->offset + view->height - 1; |
| 283 | view->draw(view, view->lineno - view->offset); |
| 284 | } |
| 285 | |
| 286 | assert(view->offset <= view->lineno && view->lineno <= view->lines); |
| 287 | |
| 288 | redrawwin(view->win); |
| 289 | wrefresh(view->win); |
| 290 | |
| 291 | report_position(view, lines); |
| 292 | } |
| 293 | static void |
| 294 | scroll_view(struct view *view, int request) |
| 295 | { |
| 296 | int lines = 1; |
| 297 | |
| 298 | switch (request) { |
| 299 | case REQ_SCR_FPAGE: |
| 300 | lines = view->height; |
| 301 | case REQ_SCR_FLINE: |
| 302 | if (view->offset + lines > view->lines) |
| 303 | lines = view->lines - view->offset; |
| 304 | |
| 305 | if (lines == 0 || view->offset + view->height >= view->lines) { |
| 306 | report("already at last line"); |
| 307 | return; |
| 308 | } |
| 309 | break; |
| 310 | |
| 311 | case REQ_SCR_BPAGE: |
| 312 | lines = view->height; |
| 313 | case REQ_SCR_BLINE: |
| 314 | if (lines > view->offset) |
| 315 | lines = view->offset; |
| 316 | |
| 317 | if (lines == 0) { |
| 318 | report("already at first line"); |
| 319 | return; |
| 320 | } |
| 321 | |
| 322 | lines = -lines; |
| 323 | break; |
| 324 | } |
| 325 | |
| 326 | move_view(view, lines); |
| 327 | } |
| 328 | |
| 329 | |
| 330 | static void |
| 331 | navigate_view(struct view *view, int request) |
| 332 | { |
| 333 | int steps; |
| 334 | |
| 335 | switch (request) { |
| 336 | case REQ_PREV_LINE: |
| 337 | if (view->lineno == 0) { |
| 338 | report("already at first line"); |
| 339 | return; |
| 340 | } |
| 341 | steps = -1; |
| 342 | break; |
| 343 | |
| 344 | case REQ_NEXT_LINE: |
| 345 | if (view->lineno + 1 >= view->lines) { |
| 346 | report("already at last line"); |
| 347 | return; |
| 348 | } |
| 349 | steps = 1; |
| 350 | break; |
| 351 | |
| 352 | case REQ_FIRST_LINE: |
| 353 | steps = -view->lineno; |
| 354 | break; |
| 355 | |
| 356 | case REQ_LAST_LINE: |
| 357 | steps = view->lines - view->lineno - 1; |
| 358 | } |
| 359 | |
| 360 | view->lineno += steps; |
| 361 | view->draw(view, view->lineno - steps - view->offset); |
| 362 | |
| 363 | if (view->lineno < view->offset || |
| 364 | view->lineno >= view->offset + view->height) { |
| 365 | if (steps < 0 && -steps > view->offset) { |
| 366 | steps = -view->offset; |
| 367 | } |
| 368 | move_view(view, steps); |
| 369 | return; |
| 370 | } |
| 371 | |
| 372 | view->draw(view, view->lineno - view->offset); |
| 373 | |
| 374 | redrawwin(view->win); |
| 375 | wrefresh(view->win); |
| 376 | |
| 377 | report_position(view, view->height); |
| 378 | } |
| 379 | |
| 380 | static void |
| 381 | resize_view(struct view *view) |
| 382 | { |
| 383 | int lines, cols; |
| 384 | |
| 385 | getmaxyx(stdscr, lines, cols); |
| 386 | |
| 387 | if (view->win) { |
| 388 | mvwin(view->win, 0, 0); |
| 389 | wresize(view->win, lines - 1, cols); |
| 390 | |
| 391 | } else { |
| 392 | view->win = newwin(lines - 1, 0, 0, 0); |
| 393 | if (!view->win) { |
| 394 | report("failed to create %s view", view->name); |
| 395 | return; |
| 396 | } |
| 397 | scrollok(view->win, TRUE); |
| 398 | } |
| 399 | |
| 400 | getmaxyx(view->win, view->height, view->width); |
| 401 | } |
| 402 | |
| 403 | |
| 404 | static bool |
| 405 | begin_update(struct view *view) |
| 406 | { |
| 407 | char buf[1024]; |
| 408 | |
| 409 | if (view->cmd) { |
| 410 | char *id = view->id; |
| 411 | |
| 412 | if (snprintf(buf, sizeof(buf), view->cmd, id, id, id) < sizeof(buf)) |
| 413 | view->pipe = popen(buf, "r"); |
| 414 | |
| 415 | if (!view->pipe) |
| 416 | return FALSE; |
| 417 | |
| 418 | if (nloading++ == 0) |
| 419 | nodelay(status_win, TRUE); |
| 420 | } |
| 421 | |
| 422 | display[current_view] = view; |
| 423 | |
| 424 | view->offset = 0; |
| 425 | view->lines = 0; |
| 426 | view->lineno = 0; |
| 427 | |
| 428 | return TRUE; |
| 429 | } |
| 430 | |
| 431 | static void |
| 432 | end_update(struct view *view) |
| 433 | { |
| 434 | wattrset(view->win, A_NORMAL); |
| 435 | pclose(view->pipe); |
| 436 | view->pipe = NULL; |
| 437 | |
| 438 | if (nloading-- == 1) |
| 439 | nodelay(status_win, FALSE); |
| 440 | } |
| 441 | |
| 442 | static int |
| 443 | update_view(struct view *view) |
| 444 | { |
| 445 | char buffer[BUFSIZ]; |
| 446 | char *line; |
| 447 | void **tmp; |
| 448 | int redraw; |
| 449 | int lines = view->height; |
| 450 | |
| 451 | if (!view->pipe) |
| 452 | return TRUE; |
| 453 | |
| 454 | /* Only redraw after the first reading session. */ |
| 455 | /* FIXME: ... and possibly more. */ |
| 456 | redraw = view->height > view->lines; |
| 457 | |
| 458 | tmp = realloc(view->line, sizeof(*view->line) * (view->lines + lines)); |
| 459 | if (!tmp) |
| 460 | goto alloc_error; |
| 461 | |
| 462 | view->line = tmp; |
| 463 | |
| 464 | while ((line = fgets(buffer, sizeof(buffer), view->pipe))) { |
| 465 | int linelen; |
| 466 | |
| 467 | linelen = strlen(line); |
| 468 | if (linelen) |
| 469 | line[linelen - 1] = 0; |
| 470 | |
| 471 | if (!view->read(view, line)) |
| 472 | goto alloc_error; |
| 473 | |
| 474 | if (lines-- == 1) |
| 475 | break; |
| 476 | } |
| 477 | |
| 478 | if (redraw) |
| 479 | redraw_view(view); |
| 480 | |
| 481 | if (ferror(view->pipe)) { |
| 482 | report("failed to read %s", view->cmd); |
| 483 | goto end; |
| 484 | |
| 485 | } else if (feof(view->pipe)) { |
| 486 | report_position(view, 0); |
| 487 | goto end; |
| 488 | } |
| 489 | |
| 490 | return TRUE; |
| 491 | |
| 492 | alloc_error: |
| 493 | report("allocation failure"); |
| 494 | |
| 495 | end: |
| 496 | end_update(view); |
| 497 | return FALSE; |
| 498 | } |
| 499 | |
| 500 | |
| 501 | static struct view * |
| 502 | switch_view(struct view *prev, int request) |
| 503 | { |
| 504 | struct view *view = &views[request - REQ_OFFSET]; |
| 505 | struct view *displayed; |
| 506 | int i; |
| 507 | |
| 508 | if (view == prev) { |
| 509 | foreach_view (displayed, i) ; |
| 510 | |
| 511 | if (i == 1) |
| 512 | report("already in %s view", view->name); |
| 513 | else |
| 514 | report("FIXME: Maximize"); |
| 515 | |
| 516 | return view; |
| 517 | |
| 518 | } else { |
| 519 | foreach_view (displayed, i) { |
| 520 | if (view == displayed) { |
| 521 | current_view = i; |
| 522 | report("new current view"); |
| 523 | return view; |
| 524 | } |
| 525 | } |
| 526 | } |
| 527 | |
| 528 | if (!view->win) |
| 529 | resize_view(view); |
| 530 | |
| 531 | /* Reload */ |
| 532 | |
| 533 | if (view->line) { |
| 534 | for (i = 0; i < view->lines; i++) |
| 535 | if (view->line[i]) |
| 536 | free(view->line[i]); |
| 537 | |
| 538 | free(view->line); |
| 539 | view->line = NULL; |
| 540 | } |
| 541 | |
| 542 | if (prev && prev->pipe) |
| 543 | end_update(prev); |
| 544 | |
| 545 | if (begin_update(view)) { |
| 546 | if (!view->cmd) |
| 547 | report("%s", HELP); |
| 548 | else |
| 549 | report("loading..."); |
| 550 | } |
| 551 | |
| 552 | return view; |
| 553 | } |
| 554 | |
| 555 | |
| 556 | /* Process a keystroke */ |
| 557 | static int |
| 558 | view_driver(struct view *view, int key) |
| 559 | { |
| 560 | int request = get_request(key); |
| 561 | int i; |
| 562 | |
| 563 | switch (request) { |
| 564 | case REQ_NEXT_LINE: |
| 565 | case REQ_PREV_LINE: |
| 566 | case REQ_FIRST_LINE: |
| 567 | case REQ_LAST_LINE: |
| 568 | if (view) |
| 569 | navigate_view(view, request); |
| 570 | break; |
| 571 | |
| 572 | case REQ_SCR_FLINE: |
| 573 | case REQ_SCR_BLINE: |
| 574 | case REQ_SCR_FPAGE: |
| 575 | case REQ_SCR_BPAGE: |
| 576 | if (view) |
| 577 | scroll_view(view, request); |
| 578 | break; |
| 579 | |
| 580 | case REQ_MAIN: |
| 581 | case REQ_LOG: |
| 582 | case REQ_DIFF: |
| 583 | view = switch_view(view, request); |
| 584 | break; |
| 585 | |
| 586 | case REQ_REDRAW: |
| 587 | redraw_view(view); |
| 588 | break; |
| 589 | |
| 590 | case REQ_STOP: |
| 591 | foreach_view (view, i) { |
| 592 | if (view->pipe) { |
| 593 | end_update(view); |
| 594 | scroll_view(view, 0); |
| 595 | } |
| 596 | } |
| 597 | break; |
| 598 | |
| 599 | case REQ_VERSION: |
| 600 | report("version %s", VERSION); |
| 601 | return TRUE; |
| 602 | |
| 603 | case REQ_UPDATE: |
| 604 | doupdate(); |
| 605 | return TRUE; |
| 606 | |
| 607 | case REQ_QUIT: |
| 608 | return FALSE; |
| 609 | |
| 610 | default: |
| 611 | report(HELP); |
| 612 | return TRUE; |
| 613 | } |
| 614 | |
| 615 | return TRUE; |
| 616 | } |
| 617 | |
| 618 | |
| 619 | /* |
| 620 | * Rendering |
| 621 | */ |
| 622 | |
| 623 | #define ATTR(line, attr) { (line), sizeof(line) - 1, (attr) } |
| 624 | |
| 625 | struct attr { |
| 626 | char *line; |
| 627 | int linelen; |
| 628 | int attr; |
| 629 | }; |
| 630 | |
| 631 | static struct attr attrs[] = { |
| 632 | ATTR("commit ", COLOR_PAIR(COLOR_GREEN)), |
| 633 | ATTR("Author: ", COLOR_PAIR(COLOR_CYAN)), |
| 634 | ATTR("Date: ", COLOR_PAIR(COLOR_YELLOW)), |
| 635 | ATTR("diff --git ", COLOR_PAIR(COLOR_YELLOW)), |
| 636 | ATTR("diff-tree ", COLOR_PAIR(COLOR_BLUE)), |
| 637 | ATTR("index ", COLOR_PAIR(COLOR_BLUE)), |
| 638 | ATTR("-", COLOR_PAIR(COLOR_RED)), |
| 639 | ATTR("+", COLOR_PAIR(COLOR_GREEN)), |
| 640 | ATTR("@", COLOR_PAIR(COLOR_MAGENTA)), |
| 641 | }; |
| 642 | |
| 643 | static int |
| 644 | pager_draw(struct view *view, unsigned int lineno) |
| 645 | { |
| 646 | char *line; |
| 647 | int linelen; |
| 648 | int attr = A_NORMAL; |
| 649 | int i; |
| 650 | |
| 651 | if (view->offset + lineno >= view->lines) |
| 652 | return FALSE; |
| 653 | |
| 654 | line = view->line[view->offset + lineno]; |
| 655 | if (!line) return FALSE; |
| 656 | |
| 657 | linelen = strlen(line); |
| 658 | |
| 659 | for (i = 0; i < ARRAY_SIZE(attrs); i++) { |
| 660 | if (linelen < attrs[i].linelen |
| 661 | || strncmp(attrs[i].line, line, attrs[i].linelen)) |
| 662 | continue; |
| 663 | |
| 664 | attr = attrs[i].attr; |
| 665 | break; |
| 666 | } |
| 667 | |
| 668 | if (view->offset + lineno == view->lineno) { |
| 669 | if (i == 0) |
| 670 | strncpy(commit_id, line + 7, SIZEOF_ID); |
| 671 | attr = COLOR_PAIR(COLOR_CURSOR) | A_BOLD; |
| 672 | } |
| 673 | |
| 674 | wattrset(view->win, attr); |
| 675 | //mvwprintw(view->win, lineno, 0, "%4d: %s", view->offset + lineno, line); |
| 676 | mvwaddstr(view->win, lineno, 0, line); |
| 677 | |
| 678 | return TRUE; |
| 679 | } |
| 680 | |
| 681 | static int |
| 682 | pager_read(struct view *view, char *line) |
| 683 | { |
| 684 | view->line[view->lines] = strdup(line); |
| 685 | if (!view->line[view->lines]) |
| 686 | return FALSE; |
| 687 | |
| 688 | view->lines++; |
| 689 | return TRUE; |
| 690 | } |
| 691 | |
| 692 | static int |
| 693 | main_draw(struct view *view, unsigned int lineno) |
| 694 | { |
| 695 | struct commit *commit; |
| 696 | int attr = A_NORMAL; |
| 697 | |
| 698 | if (view->offset + lineno >= view->lines) |
| 699 | return FALSE; |
| 700 | |
| 701 | commit = view->line[view->offset + lineno]; |
| 702 | if (!commit) return FALSE; |
| 703 | |
| 704 | attr = attrs[0].attr; |
| 705 | |
| 706 | if (view->offset + lineno == view->lineno) { |
| 707 | strncpy(commit_id, commit->id, SIZEOF_ID); |
| 708 | attr = COLOR_PAIR(COLOR_CURSOR) | A_BOLD; |
| 709 | } |
| 710 | |
| 711 | mvwaddch(view->win, lineno, 0, ACS_LTEE); |
| 712 | wattrset(view->win, attr); |
| 713 | mvwaddstr(view->win, lineno, 2, commit->title); |
| 714 | wattrset(view->win, A_NORMAL); |
| 715 | |
| 716 | return TRUE; |
| 717 | } |
| 718 | |
| 719 | static int |
| 720 | main_read(struct view *view, char *line) |
| 721 | { |
| 722 | int linelen = strlen(line); |
| 723 | int i; |
| 724 | |
| 725 | for (i = 0; i < ARRAY_SIZE(attrs); i++) { |
| 726 | if (linelen < attrs[i].linelen |
| 727 | || strncmp(attrs[i].line, line, attrs[i].linelen)) |
| 728 | continue; |
| 729 | break; |
| 730 | } |
| 731 | |
| 732 | if (i == 0) { |
| 733 | struct commit *commit; |
| 734 | |
| 735 | commit = calloc(1, sizeof(struct commit)); |
| 736 | if (!commit) |
| 737 | return FALSE; |
| 738 | |
| 739 | view->line[view->lines++] = commit; |
| 740 | |
| 741 | strncpy(commit->id, line + 7, 41); |
| 742 | |
| 743 | } else { |
| 744 | struct commit *commit = view->line[view->lines - 1]; |
| 745 | |
| 746 | if (!commit->title[0] && |
| 747 | linelen > 5 && |
| 748 | !strncmp(line, " ", 4) && |
| 749 | !isspace(line[5])) |
| 750 | strncpy(commit->title, line + 4, sizeof(commit->title)); |
| 751 | } |
| 752 | |
| 753 | return TRUE; |
| 754 | } |
| 755 | |
| 756 | |
| 757 | /* |
| 758 | * Main |
| 759 | */ |
| 760 | |
| 761 | static void |
| 762 | quit(int sig) |
| 763 | { |
| 764 | if (status_win) |
| 765 | delwin(status_win); |
| 766 | endwin(); |
| 767 | |
| 768 | /* FIXME: Shutdown gracefully. */ |
| 769 | |
| 770 | exit(0); |
| 771 | } |
| 772 | |
| 773 | static void die(const char *err, ...) |
| 774 | { |
| 775 | va_list args; |
| 776 | |
| 777 | endwin(); |
| 778 | |
| 779 | va_start(args, err); |
| 780 | fputs("tig: ", stderr); |
| 781 | vfprintf(stderr, err, args); |
| 782 | fputs("\n", stderr); |
| 783 | va_end(args); |
| 784 | |
| 785 | exit(1); |
| 786 | } |
| 787 | |
| 788 | static void |
| 789 | report(const char *msg, ...) |
| 790 | { |
| 791 | va_list args; |
| 792 | |
| 793 | va_start(args, msg); |
| 794 | |
| 795 | werase(status_win); |
| 796 | wmove(status_win, 0, 0); |
| 797 | |
| 798 | #if 0 |
| 799 | if (display[current_view]) |
| 800 | wprintw(status_win, "%s %4s: ", commit_id, display[current_view]->name); |
| 801 | #endif |
| 802 | vwprintw(status_win, msg, args); |
| 803 | wrefresh(status_win); |
| 804 | |
| 805 | va_end(args); |
| 806 | } |
| 807 | |
| 808 | static void |
| 809 | init_colors(void) |
| 810 | { |
| 811 | int bg = COLOR_BLACK; |
| 812 | |
| 813 | start_color(); |
| 814 | |
| 815 | if (use_default_colors() != ERR) |
| 816 | bg = -1; |
| 817 | |
| 818 | init_pair(COLOR_BLACK, COLOR_BLACK, bg); |
| 819 | init_pair(COLOR_GREEN, COLOR_GREEN, bg); |
| 820 | init_pair(COLOR_RED, COLOR_RED, bg); |
| 821 | init_pair(COLOR_CYAN, COLOR_CYAN, bg); |
| 822 | init_pair(COLOR_WHITE, COLOR_WHITE, bg); |
| 823 | init_pair(COLOR_MAGENTA, COLOR_MAGENTA, bg); |
| 824 | init_pair(COLOR_BLUE, COLOR_BLUE, bg); |
| 825 | init_pair(COLOR_YELLOW, COLOR_YELLOW, bg); |
| 826 | init_pair(COLOR_CURSOR, COLOR_WHITE, COLOR_GREEN); |
| 827 | } |
| 828 | |
| 829 | int |
| 830 | main(int argc, char *argv[]) |
| 831 | { |
| 832 | int request = REQ_MAIN; |
| 833 | int x, y; |
| 834 | |
| 835 | signal(SIGINT, quit); |
| 836 | |
| 837 | initscr(); /* initialize the curses library */ |
| 838 | nonl(); /* tell curses not to do NL->CR/NL on output */ |
| 839 | cbreak(); /* take input chars one at a time, no wait for \n */ |
| 840 | noecho(); /* don't echo input */ |
| 841 | leaveok(stdscr, TRUE); |
| 842 | /* curs_set(0); */ |
| 843 | |
| 844 | if (has_colors()) |
| 845 | init_colors(); |
| 846 | |
| 847 | getmaxyx(stdscr, y, x); |
| 848 | status_win = newwin(1, 0, y - 1, 0); |
| 849 | if (!status_win) |
| 850 | die("Failed to create status window"); |
| 851 | |
| 852 | /* Enable keyboard mapping */ |
| 853 | keypad(status_win, TRUE); |
| 854 | wattrset(status_win, COLOR_PAIR(COLOR_GREEN)); |
| 855 | |
| 856 | while (view_driver(display[current_view], request)) { |
| 857 | struct view *view; |
| 858 | int i; |
| 859 | |
| 860 | foreach_view (view, i) { |
| 861 | if (view->pipe) { |
| 862 | update_view(view); |
| 863 | } |
| 864 | } |
| 865 | |
| 866 | /* Refresh, accept single keystroke of input */ |
| 867 | request = wgetch(status_win); |
| 868 | if (request == KEY_RESIZE) { |
| 869 | int lines, cols; |
| 870 | |
| 871 | getmaxyx(stdscr, lines, cols); |
| 872 | mvwin(status_win, lines - 1, 0); |
| 873 | wresize(status_win, 1, cols - 1); |
| 874 | } |
| 875 | } |
| 876 | |
| 877 | quit(0); |
| 878 | |
| 879 | return 0; |
| 880 | } |
| 881 | |
| 882 | /** |
| 883 | * COPYRIGHT |
| 884 | * --------- |
| 885 | * Copyright (c) Jonas Fonseca, 2006 |
| 886 | * |
| 887 | * This program is free software; you can redistribute it and/or modify |
| 888 | * it under the terms of the GNU General Public License as published by |
| 889 | * the Free Software Foundation; either version 2 of the License, or |
| 890 | * (at your option) any later version. |
| 891 | * |
| 892 | * SEE ALSO |
| 893 | * -------- |
| 894 | * link:http://www.kernel.org/pub/software/scm/git/docs/[git(7)], |
| 895 | * link:http://www.kernel.org/pub/software/scm/cogito/docs/[cogito(7)] |
| 896 | **/ |