| 1 | /** |
| 2 | * gitzilla(1) |
| 3 | * =========== |
| 4 | * |
| 5 | * NAME |
| 6 | * ---- |
| 7 | * gitzilla - cursed git browser |
| 8 | * |
| 9 | * SYNOPSIS |
| 10 | * -------- |
| 11 | * gitzilla |
| 12 | * |
| 13 | * DESCRIPTION |
| 14 | * ----------- |
| 15 | * |
| 16 | * a |
| 17 | * |
| 18 | **/ |
| 19 | |
| 20 | #include <stdarg.h> |
| 21 | #include <stdlib.h> |
| 22 | #include <stdio.h> |
| 23 | #include <string.h> |
| 24 | #include <ctype.h> |
| 25 | #include <signal.h> |
| 26 | |
| 27 | #include <curses.h> |
| 28 | |
| 29 | /** |
| 30 | * OPTIONS |
| 31 | * ------- |
| 32 | * |
| 33 | * None |
| 34 | * |
| 35 | **/ |
| 36 | |
| 37 | /** |
| 38 | * KEYS |
| 39 | * ---- |
| 40 | * |
| 41 | * q:: quit |
| 42 | * s:: shell |
| 43 | * j:: down |
| 44 | * k:: up |
| 45 | * |
| 46 | **/ |
| 47 | |
| 48 | #define MSG_HELP "(q)uit, (s)hell, (j) down, (k) up" |
| 49 | |
| 50 | #define KEY_ESC 27 |
| 51 | #define KEY_TAB 9 |
| 52 | |
| 53 | struct view { |
| 54 | WINDOW *win; |
| 55 | |
| 56 | char *cmd; |
| 57 | void (*reader)(char *, int); |
| 58 | FILE *pipe; |
| 59 | |
| 60 | unsigned long lines; |
| 61 | unsigned long lineno; |
| 62 | }; |
| 63 | |
| 64 | static struct view main_view; |
| 65 | static struct view diff_view; |
| 66 | static struct view log_view; |
| 67 | static struct view status_view; |
| 68 | |
| 69 | int do_resize = 1; |
| 70 | |
| 71 | static void |
| 72 | put_status(char *msg, ...) |
| 73 | { |
| 74 | va_list args; |
| 75 | |
| 76 | va_start(args, msg); |
| 77 | werase(status_view.win); |
| 78 | wmove(status_view.win, 0, 0); |
| 79 | vwprintw(status_view.win, msg, args); |
| 80 | wrefresh(status_view.win); |
| 81 | va_end(args); |
| 82 | } |
| 83 | |
| 84 | static void |
| 85 | resize_views(void) |
| 86 | { |
| 87 | int x, y; |
| 88 | |
| 89 | getmaxyx(stdscr, y, x); |
| 90 | |
| 91 | if (status_view.win) |
| 92 | delwin(status_view.win); |
| 93 | status_view.win = newwin(1, 0, y - 1, 0); |
| 94 | |
| 95 | wattrset(status_view.win, COLOR_PAIR(COLOR_GREEN)); |
| 96 | put_status(MSG_HELP); |
| 97 | |
| 98 | if (main_view.win) |
| 99 | delwin(main_view.win); |
| 100 | main_view.win = newwin(y - 1, 0, 0, 0); |
| 101 | |
| 102 | scrollok(main_view.win, TRUE); |
| 103 | keypad(main_view.win, TRUE); /* enable keyboard mapping */ |
| 104 | put_status("%d %d", y, x); |
| 105 | } |
| 106 | |
| 107 | /* |
| 108 | * Init and quit |
| 109 | */ |
| 110 | |
| 111 | static void |
| 112 | quit(int sig) |
| 113 | { |
| 114 | endwin(); |
| 115 | |
| 116 | /* do your non-curses wrapup here */ |
| 117 | |
| 118 | exit(0); |
| 119 | } |
| 120 | |
| 121 | static void |
| 122 | init_colors(void) |
| 123 | { |
| 124 | int bg = COLOR_BLACK; |
| 125 | |
| 126 | start_color(); |
| 127 | |
| 128 | if (use_default_colors() != ERR) |
| 129 | bg = -1; |
| 130 | |
| 131 | init_pair(COLOR_BLACK, COLOR_BLACK, bg); |
| 132 | init_pair(COLOR_GREEN, COLOR_GREEN, bg); |
| 133 | init_pair(COLOR_RED, COLOR_RED, bg); |
| 134 | init_pair(COLOR_CYAN, COLOR_CYAN, bg); |
| 135 | init_pair(COLOR_WHITE, COLOR_WHITE, bg); |
| 136 | init_pair(COLOR_MAGENTA, COLOR_MAGENTA, bg); |
| 137 | init_pair(COLOR_BLUE, COLOR_BLUE, bg); |
| 138 | init_pair(COLOR_YELLOW, COLOR_YELLOW, bg); |
| 139 | } |
| 140 | |
| 141 | static void |
| 142 | init(void) |
| 143 | { |
| 144 | signal(SIGINT, quit); |
| 145 | |
| 146 | initscr(); /* initialize the curses library */ |
| 147 | nonl(); /* tell curses not to do NL->CR/NL on output */ |
| 148 | cbreak(); /* take input chars one at a time, no wait for \n */ |
| 149 | noecho(); /* don't echo input */ |
| 150 | leaveok(stdscr, TRUE); |
| 151 | /* curs_set(0); */ |
| 152 | |
| 153 | if (has_colors()) |
| 154 | init_colors(); |
| 155 | } |
| 156 | |
| 157 | /* |
| 158 | * Pipe readers |
| 159 | */ |
| 160 | |
| 161 | #define DIFF_CMD \ |
| 162 | "git log --stat -n1 HEAD ; echo; " \ |
| 163 | "git diff --find-copies-harder -B -C HEAD^ HEAD" |
| 164 | |
| 165 | #define LOG_CMD \ |
| 166 | "git log --stat -n100" |
| 167 | |
| 168 | static void |
| 169 | log_reader(char *line, int lineno) |
| 170 | { |
| 171 | static int log_reader_skip; |
| 172 | |
| 173 | if (!line) { |
| 174 | wattrset(main_view.win, A_NORMAL); |
| 175 | log_reader_skip = 0; |
| 176 | return; |
| 177 | } |
| 178 | |
| 179 | if (!strncmp("commit ", line, 7)) { |
| 180 | wattrset(main_view.win, COLOR_PAIR(COLOR_GREEN)); |
| 181 | |
| 182 | } else if (!strncmp("Author: ", line, 8)) { |
| 183 | wattrset(main_view.win, COLOR_PAIR(COLOR_CYAN)); |
| 184 | |
| 185 | } else if (!strncmp("Date: ", line, 8)) { |
| 186 | wattrset(main_view.win, COLOR_PAIR(COLOR_YELLOW)); |
| 187 | |
| 188 | } else if (!strncmp("diff --git ", line, 11)) { |
| 189 | wattrset(main_view.win, COLOR_PAIR(COLOR_YELLOW)); |
| 190 | |
| 191 | } else if (!strncmp("diff-tree ", line, 10)) { |
| 192 | wattrset(main_view.win, COLOR_PAIR(COLOR_BLUE)); |
| 193 | |
| 194 | } else if (!strncmp("index ", line, 6)) { |
| 195 | wattrset(main_view.win, COLOR_PAIR(COLOR_BLUE)); |
| 196 | |
| 197 | } else if (line[0] == '-') { |
| 198 | wattrset(main_view.win, COLOR_PAIR(COLOR_RED)); |
| 199 | |
| 200 | } else if (line[0] == '+') { |
| 201 | wattrset(main_view.win, COLOR_PAIR(COLOR_GREEN)); |
| 202 | |
| 203 | } else if (line[0] == '@') { |
| 204 | wattrset(main_view.win, COLOR_PAIR(COLOR_MAGENTA)); |
| 205 | |
| 206 | } else if (line[0] == ':') { |
| 207 | main_view.lines--; |
| 208 | log_reader_skip = 1; |
| 209 | return; |
| 210 | |
| 211 | } else if (log_reader_skip) { |
| 212 | main_view.lines--; |
| 213 | log_reader_skip = 0; |
| 214 | return; |
| 215 | |
| 216 | } else { |
| 217 | wattrset(main_view.win, A_NORMAL); |
| 218 | } |
| 219 | |
| 220 | mvwaddstr(main_view.win, lineno, 0, line); |
| 221 | } |
| 222 | |
| 223 | static struct view * |
| 224 | update_view(struct view *view, char *cmd) |
| 225 | { |
| 226 | view->cmd = cmd; |
| 227 | view->pipe = popen(cmd, "r"); |
| 228 | view->lines = 0; |
| 229 | view->lineno = 0; |
| 230 | view->reader = log_reader; |
| 231 | |
| 232 | wclear(view->win); |
| 233 | wmove(view->win, 0, 0); |
| 234 | |
| 235 | put_status("Loading..."); |
| 236 | |
| 237 | return view; |
| 238 | } |
| 239 | |
| 240 | static struct view * |
| 241 | read_pipe(struct view *view, int lines) |
| 242 | { |
| 243 | char buffer[BUFSIZ]; |
| 244 | char *line; |
| 245 | int x, y; |
| 246 | |
| 247 | while ((line = fgets(buffer, sizeof(buffer), view->pipe))) { |
| 248 | int linelen; |
| 249 | |
| 250 | if (!--lines) |
| 251 | break; |
| 252 | |
| 253 | linelen = strlen(line); |
| 254 | if (linelen) |
| 255 | line[linelen - 1] = 0; |
| 256 | |
| 257 | view->reader(line, view->lines++); |
| 258 | } |
| 259 | |
| 260 | if (ferror(view->pipe)) { |
| 261 | put_status("Failed to read %s", view->cmd, view->lines - 1); |
| 262 | |
| 263 | } else if (feof(view->pipe)) { |
| 264 | put_status("%s (lines %d)", MSG_HELP, view->lines - 1); |
| 265 | |
| 266 | } else { |
| 267 | return view; |
| 268 | } |
| 269 | |
| 270 | view->reader(NULL, view->lines - 1); |
| 271 | pclose(view->pipe); |
| 272 | view->pipe = NULL; |
| 273 | view->reader = NULL; |
| 274 | } |
| 275 | |
| 276 | /* |
| 277 | * Main |
| 278 | */ |
| 279 | |
| 280 | int |
| 281 | main(int argc, char *argv[]) |
| 282 | { |
| 283 | static struct view *loading_view; |
| 284 | |
| 285 | init(); |
| 286 | |
| 287 | //pipe = open_pipe(LOG_CMD, log_reader); |
| 288 | |
| 289 | for (;;) { |
| 290 | int c; |
| 291 | |
| 292 | if (do_resize) { |
| 293 | resize_views(); |
| 294 | do_resize = 0; |
| 295 | } |
| 296 | |
| 297 | if (loading_view && (loading_view = read_pipe(loading_view, 20))) |
| 298 | nodelay(loading_view->win, TRUE); |
| 299 | |
| 300 | c = wgetch(main_view.win); /* refresh, accept single keystroke of input */ |
| 301 | |
| 302 | if (loading_view) |
| 303 | nodelay(loading_view->win, FALSE); |
| 304 | |
| 305 | /* No input from wgetch() with nodelay() enabled. */ |
| 306 | if (c == ERR) { |
| 307 | doupdate(); |
| 308 | continue; |
| 309 | } |
| 310 | |
| 311 | /* Process the command keystroke */ |
| 312 | switch (c) { |
| 313 | case KEY_RESIZE: |
| 314 | fprintf(stderr, "resize"); |
| 315 | exit; |
| 316 | break; |
| 317 | |
| 318 | case KEY_ESC: |
| 319 | case 'q': |
| 320 | quit(0); |
| 321 | main_view.lineno--; |
| 322 | return 0; |
| 323 | |
| 324 | case KEY_DOWN: |
| 325 | case 'j': |
| 326 | { |
| 327 | int x, y; |
| 328 | |
| 329 | getmaxyx(main_view.win, y, x); |
| 330 | if (main_view.lineno + y < main_view.lines) { |
| 331 | wscrl(main_view.win, 1); |
| 332 | main_view.lineno++; |
| 333 | put_status("line %d out of %d (%d%%)", |
| 334 | main_view.lineno, |
| 335 | main_view.lines, |
| 336 | 100 * main_view.lineno / main_view.lines); |
| 337 | } else { |
| 338 | put_status("last line reached"); |
| 339 | } |
| 340 | break; |
| 341 | } |
| 342 | case KEY_UP: |
| 343 | case 'k': |
| 344 | if (main_view.lineno > 1) { |
| 345 | wscrl(main_view.win, -1); |
| 346 | main_view.lineno--; |
| 347 | put_status("line %d out of %d (%d%%)", |
| 348 | main_view.lineno, |
| 349 | main_view.lines, |
| 350 | 100 * main_view.lineno / main_view.lines); |
| 351 | } else { |
| 352 | put_status("first line reached"); |
| 353 | } |
| 354 | break; |
| 355 | |
| 356 | case 'c': |
| 357 | wclear(main_view.win); |
| 358 | break; |
| 359 | |
| 360 | case 'd': |
| 361 | loading_view = update_view(&main_view, DIFF_CMD); |
| 362 | break; |
| 363 | |
| 364 | case 'l': |
| 365 | loading_view = update_view(&main_view, LOG_CMD); |
| 366 | break; |
| 367 | |
| 368 | case 's': |
| 369 | mvwaddstr(status_view.win, 0, 0, "Shelling out..."); |
| 370 | def_prog_mode(); /* save current tty modes */ |
| 371 | endwin(); /* restore original tty modes */ |
| 372 | system("sh"); /* run shell */ |
| 373 | |
| 374 | werase(status_view.win); |
| 375 | mvwaddstr(status_view.win, 0, 0, MSG_HELP); |
| 376 | reset_prog_mode(); |
| 377 | break; |
| 378 | } |
| 379 | |
| 380 | redrawwin(main_view.win); |
| 381 | wrefresh(main_view.win); |
| 382 | } |
| 383 | |
| 384 | quit(0); |
| 385 | } |
| 386 | |
| 387 | /** |
| 388 | * COPYRIGHT |
| 389 | * --------- |
| 390 | * Copyright (c) Jonas Fonseca, 2006 |
| 391 | * |
| 392 | * This program is free software; you can redistribute it and/or modify |
| 393 | * it under the terms of the GNU General Public License as published by |
| 394 | * the Free Software Foundation; either version 2 of the License, or |
| 395 | * (at your option) any later version. |
| 396 | * |
| 397 | * SEE ALSO |
| 398 | * -------- |
| 399 | * gitlink:cogito[7], |
| 400 | * gitlink:git[7] |
| 401 | **/ |