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 void show_flag(char *arg)
112 if (!(filter & DO_FLAGS))
114 if (filter & (is_rev_argument(arg) ? DO_REVS : DO_NOREV))
118 static void show_default(void)
123 unsigned char sha1[20];
126 if (!get_sha1(s, sha1)) {
127 show_rev(NORMAL, sha1, s);
133 static int show_reference(const char *refname, const unsigned char *sha1)
135 show_rev(NORMAL, sha1, refname);
139 static void show_datestring(const char *flag, const char *datestr)
141 static char buffer[100];
143 /* date handling requires both flags and revs */
144 if ((filter & (DO_FLAGS | DO_REVS)) != (DO_FLAGS | DO_REVS))
146 snprintf(buffer, sizeof(buffer), "%s%lu", flag, approxidate(datestr));
150 static void show_file(const char *arg)
153 if ((filter & (DO_NONFLAGS|DO_NOREV)) == (DO_NONFLAGS|DO_NOREV))
157 int main(int argc, char **argv)
159 int i, as_is = 0, verify = 0;
160 unsigned char sha1[20];
161 const char *prefix = setup_git_directory();
163 for (i = 1; i < argc; i++) {
172 if (!strcmp(arg,"-n")) {
174 die("-n requires an argument");
175 if ((filter & DO_FLAGS) && (filter & DO_REVS)) {
181 if (!strncmp(arg,"-n",2)) {
182 if ((filter & DO_FLAGS) && (filter & DO_REVS))
188 if (!strcmp(arg, "--")) {
190 /* Pass on the "--" if we show anything but files.. */
191 if (filter & (DO_FLAGS | DO_REVS))
195 if (!strcmp(arg, "--default")) {
200 if (!strcmp(arg, "--revs-only")) {
204 if (!strcmp(arg, "--no-revs")) {
208 if (!strcmp(arg, "--flags")) {
209 filter &= ~DO_NONFLAGS;
212 if (!strcmp(arg, "--no-flags")) {
216 if (!strcmp(arg, "--verify")) {
217 filter &= ~(DO_FLAGS|DO_NOREV);
221 if (!strcmp(arg, "--short") ||
222 !strncmp(arg, "--short=", 9)) {
223 filter &= ~(DO_FLAGS|DO_NOREV);
225 abbrev = DEFAULT_ABBREV;
227 abbrev = strtoul(arg + 9, NULL, 10);
228 if (abbrev < MINIMUM_ABBREV)
229 abbrev = MINIMUM_ABBREV;
230 else if (40 <= abbrev)
234 if (!strcmp(arg, "--sq")) {
238 if (!strcmp(arg, "--not")) {
239 show_type ^= REVERSED;
242 if (!strcmp(arg, "--symbolic")) {
246 if (!strcmp(arg, "--all")) {
247 for_each_ref(show_reference);
250 if (!strcmp(arg, "--show-prefix")) {
255 if (!strcmp(arg, "--show-cdup")) {
256 const char *pfx = prefix;
258 pfx = strchr(pfx, '/');
267 if (!strcmp(arg, "--git-dir")) {
268 const char *gitdir = getenv(GIT_DIR_ENVIRONMENT);
269 static char cwd[PATH_MAX];
278 if (!getcwd(cwd, PATH_MAX))
279 die("unable to get current working directory");
280 printf("%s/.git\n", cwd);
283 if (!strncmp(arg, "--since=", 8)) {
284 show_datestring("--max-age=", arg+8);
287 if (!strncmp(arg, "--after=", 8)) {
288 show_datestring("--max-age=", arg+8);
291 if (!strncmp(arg, "--before=", 9)) {
292 show_datestring("--min-age=", arg+9);
295 if (!strncmp(arg, "--until=", 8)) {
296 show_datestring("--min-age=", arg+8);
300 die("Needed a single revision");
305 /* Not a flag argument */
306 dotdot = strstr(arg, "..");
308 unsigned char end[20];
311 if (!get_sha1(arg, sha1)) {
314 if (!get_sha1(n, end)) {
315 show_rev(NORMAL, end, n);
316 show_rev(REVERSED, sha1, arg);
322 if (!get_sha1(arg, sha1)) {
323 show_rev(NORMAL, sha1, arg);
326 if (*arg == '^' && !get_sha1(arg+1, sha1)) {
327 show_rev(REVERSED, sha1, arg+1);
331 die("Needed a single revision");
332 if ((filter & DO_REVS) &&
333 (filter & DO_NONFLAGS) && /* !def && */
335 die("'%s': %s", arg, strerror(errno));
340 if (verify && revs_count != 1)
341 die("Needed a single revision");