4 * Copyright (C) Linus Torvalds, 2005
15 static int filter = ~0;
17 static char *def = NULL;
21 static int show_type = NORMAL;
22 static int symbolic = 0;
23 static int abbrev = 0;
24 static int output_sq = 0;
26 static int revs_count = 0;
29 * Some arguments are relevant "revision" arguments,
30 * others are about output format or other details.
31 * This sorts it all out.
33 static int is_rev_argument(const char *arg)
35 static const char *rev_args[] = {
54 const char **p = rev_args;
56 /* accept -<digit>, like traditional "head" */
57 if ((*arg == '-') && isdigit(arg[1]))
61 const char *str = *p++;
66 if (!strcmp(arg, str) ||
67 (str[len-1] == '=' && !strncmp(arg, str, len)))
72 /* Output argument as a string, either SQ or normal */
73 static void show(const char *arg)
79 while ((ch = *arg++)) {
81 fputs("'\\'", stdout);
91 /* Output a revision, only if filter allows it */
92 static void show_rev(int type, const unsigned char *sha1, const char *name)
94 if (!(filter & DO_REVS))
99 if (type != show_type)
101 if (symbolic && name)
104 show(find_unique_abbrev(sha1, abbrev));
106 show(sha1_to_hex(sha1));
109 /* Output a flag, only if filter allows it. */
110 static int show_flag(char *arg)
112 if (!(filter & DO_FLAGS))
114 if (filter & (is_rev_argument(arg) ? DO_REVS : DO_NOREV)) {
121 static void show_default(void)
126 unsigned char sha1[20];
129 if (!get_sha1(s, sha1)) {
130 show_rev(NORMAL, sha1, s);
136 static int show_reference(const char *refname, const unsigned char *sha1)
138 show_rev(NORMAL, sha1, refname);
142 static void show_datestring(const char *flag, const char *datestr)
144 static char buffer[100];
146 /* date handling requires both flags and revs */
147 if ((filter & (DO_FLAGS | DO_REVS)) != (DO_FLAGS | DO_REVS))
149 snprintf(buffer, sizeof(buffer), "%s%lu", flag, approxidate(datestr));
153 static int show_file(const char *arg)
156 if ((filter & (DO_NONFLAGS|DO_NOREV)) == (DO_NONFLAGS|DO_NOREV)) {
163 int main(int argc, char **argv)
165 int i, as_is = 0, verify = 0;
166 unsigned char sha1[20];
167 const char *prefix = setup_git_directory();
169 git_config(git_default_config);
171 for (i = 1; i < argc; i++) {
177 if (show_file(arg) && as_is < 2)
178 if (lstat(arg, &st) < 0)
179 die("'%s': %s", arg, strerror(errno));
182 if (!strcmp(arg,"-n")) {
184 die("-n requires an argument");
185 if ((filter & DO_FLAGS) && (filter & DO_REVS)) {
191 if (!strncmp(arg,"-n",2)) {
192 if ((filter & DO_FLAGS) && (filter & DO_REVS))
198 if (!strcmp(arg, "--")) {
200 /* Pass on the "--" if we show anything but files.. */
201 if (filter & (DO_FLAGS | DO_REVS))
205 if (!strcmp(arg, "--default")) {
210 if (!strcmp(arg, "--revs-only")) {
214 if (!strcmp(arg, "--no-revs")) {
218 if (!strcmp(arg, "--flags")) {
219 filter &= ~DO_NONFLAGS;
222 if (!strcmp(arg, "--no-flags")) {
226 if (!strcmp(arg, "--verify")) {
227 filter &= ~(DO_FLAGS|DO_NOREV);
231 if (!strcmp(arg, "--short") ||
232 !strncmp(arg, "--short=", 8)) {
233 filter &= ~(DO_FLAGS|DO_NOREV);
235 abbrev = DEFAULT_ABBREV;
237 abbrev = strtoul(arg + 8, NULL, 10);
238 if (abbrev < MINIMUM_ABBREV)
239 abbrev = MINIMUM_ABBREV;
240 else if (40 <= abbrev)
244 if (!strcmp(arg, "--sq")) {
248 if (!strcmp(arg, "--not")) {
249 show_type ^= REVERSED;
252 if (!strcmp(arg, "--symbolic")) {
256 if (!strcmp(arg, "--all")) {
257 for_each_ref(show_reference);
260 if (!strcmp(arg, "--show-prefix")) {
265 if (!strcmp(arg, "--show-cdup")) {
266 const char *pfx = prefix;
268 pfx = strchr(pfx, '/');
277 if (!strcmp(arg, "--git-dir")) {
278 const char *gitdir = getenv(GIT_DIR_ENVIRONMENT);
279 static char cwd[PATH_MAX];
288 if (!getcwd(cwd, PATH_MAX))
289 die("unable to get current working directory");
290 printf("%s/.git\n", cwd);
293 if (!strncmp(arg, "--since=", 8)) {
294 show_datestring("--max-age=", arg+8);
297 if (!strncmp(arg, "--after=", 8)) {
298 show_datestring("--max-age=", arg+8);
301 if (!strncmp(arg, "--before=", 9)) {
302 show_datestring("--min-age=", arg+9);
305 if (!strncmp(arg, "--until=", 8)) {
306 show_datestring("--min-age=", arg+8);
309 if (show_flag(arg) && verify)
310 die("Needed a single revision");
314 /* Not a flag argument */
315 dotdot = strstr(arg, "..");
317 unsigned char end[20];
318 char *next = dotdot + 2;
325 if (!get_sha1(this, sha1) && !get_sha1(next, end)) {
326 show_rev(NORMAL, end, next);
327 show_rev(REVERSED, sha1, this);
332 if (!get_sha1(arg, sha1)) {
333 show_rev(NORMAL, sha1, arg);
336 if (*arg == '^' && !get_sha1(arg+1, sha1)) {
337 show_rev(REVERSED, sha1, arg+1);
344 die("Needed a single revision");
345 if (lstat(arg, &st) < 0)
346 die("'%s': %s", arg, strerror(errno));
349 if (verify && revs_count != 1)
350 die("Needed a single revision");