2 * GIT - The information manager from hell
4 * Copyright (C) Linus Torvalds, 2005
14 #define BLOCKING (1ul << 14)
17 * FIXME! Share the code with "write-tree.c"
19 static void init_buffer(char **bufp, unsigned int *sizep)
21 char *buf = xmalloc(BLOCKING);
26 static void add_buffer(char **bufp, unsigned int *sizep, const char *fmt, ...)
31 unsigned long alloc, size, newsize;
35 len = vsnprintf(one_line, sizeof(one_line), fmt, args);
39 alloc = (size + 32767) & ~32767;
41 if (newsize > alloc) {
42 alloc = (newsize + 32767) & ~32767;
43 buf = xrealloc(buf, alloc);
47 memcpy(buf + size, one_line, len);
50 static void remove_special(char *p)
53 char *dst = p, *src = p;
59 case '\n': case '<': case '>':
68 * Go back, and remove crud from the end: some people
69 * have commas etc in their gecos field
73 unsigned char c = *dst;
75 case ',': case ';': case '.':
83 static const char *month_names[] = {
84 "Jan", "Feb", "Mar", "Apr", "May", "Jun",
85 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
88 static const char *weekday_names[] = {
89 "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"
93 static char *skipfws(char *str)
101 /* Gr. strptime is crap for this; it doesn't have a way to require RFC2822
102 (i.e. English) day/month names, and it doesn't work correctly with %z. */
103 static void parse_rfc2822_date(char *date, char *result, int maxlen)
110 memset(&tm, 0, sizeof(tm));
115 for (i=0; i<7; i++) {
116 if (!strncmp(p,weekday_names[i],3) && p[3] == ',') {
126 tm.tm_mday = strtoul(p, &p, 10);
128 if (tm.tm_mday < 1 || tm.tm_mday > 31)
138 for (i=0; i<12; i++) {
139 if (!strncmp(p, month_names[i], 3) && isspace(p[3])) {
141 p = skipfws(p+strlen(month_names[i]));
145 return; /* Error -- bad month */
149 tm.tm_year = strtoul(p, &p, 10);
151 if (!tm.tm_year && !isspace(*p))
154 if (tm.tm_year > 1900)
162 tm.tm_hour = strtoul(p, &p, 10);
164 if (!tm.tm_hour > 23)
168 return; /* Error -- bad time */
174 tm.tm_min = strtoul(p, &p, 10);
183 return; /* Error -- bad time */
189 tm.tm_sec = strtoul(p, &p, 10);
207 if (!isdigit(p[1]) || !isdigit(p[2]) || !isdigit(p[3]) || !isdigit(p[4]))
210 i = strtoul(p+1, NULL, 10);
211 offset *= ((i % 100) + ((i / 100) * 60));
213 if (*(skipfws(p + 5)))
216 then = mktime(&tm); /* mktime appears to ignore the GMT offset, stupidly */
222 snprintf(result, maxlen, "%lu %5.5s", then, p);
225 static void check_valid(unsigned char *sha1, const char *expect)
231 buf = read_sha1_file(sha1, type, &size);
232 if (!buf || strcmp(type, expect))
233 die("%s is not a valid '%s' object", sha1_to_hex(sha1), expect);
238 * Having more than two parents is not strange at all, and this is
239 * how multi-way merges are represented.
241 #define MAXPARENT (16)
243 static char *commit_tree_usage = "commit-tree <sha1> [-p <sha1>]* < changelog";
245 int main(int argc, char **argv)
249 unsigned char tree_sha1[20];
250 unsigned char parent_sha1[MAXPARENT][20];
251 unsigned char commit_sha1[20];
252 char *gecos, *realgecos, *commitgecos;
253 char *email, *commitemail, realemail[1000];
254 char date[20], realdate[20];
263 if (argc < 2 || get_sha1_hex(argv[1], tree_sha1) < 0)
264 usage(commit_tree_usage);
266 check_valid(tree_sha1, "tree");
267 for (i = 2; i < argc; i += 2) {
269 a = argv[i]; b = argv[i+1];
270 if (!b || strcmp(a, "-p") || get_sha1_hex(b, parent_sha1[parents]))
271 usage(commit_tree_usage);
272 check_valid(parent_sha1[parents], "commit");
276 fprintf(stderr, "Committing initial tree %s\n", argv[1]);
277 pw = getpwuid(getuid());
279 die("You don't exist. Go away!");
280 realgecos = pw->pw_gecos;
281 len = strlen(pw->pw_name);
282 memcpy(realemail, pw->pw_name, len);
283 realemail[len] = '@';
284 gethostname(realemail+len+1, sizeof(realemail)-len-1);
285 if (!strchr(realemail+len+1, '.')) {
286 strcat(realemail, ".");
287 getdomainname(realemail+strlen(realemail), sizeof(realemail)-strlen(realemail)-1);
290 tm = localtime(&now);
292 strftime(realdate, sizeof(realdate), "%s %z", tm);
293 strcpy(date, realdate);
295 commitgecos = getenv("COMMIT_AUTHOR_NAME") ? : realgecos;
296 commitemail = getenv("COMMIT_AUTHOR_EMAIL") ? : realemail;
297 gecos = getenv("AUTHOR_NAME") ? : realgecos;
298 email = getenv("AUTHOR_EMAIL") ? : realemail;
299 audate = getenv("AUTHOR_DATE");
301 parse_rfc2822_date(audate, date, sizeof(date));
303 remove_special(gecos); remove_special(realgecos); remove_special(commitgecos);
304 remove_special(email); remove_special(realemail); remove_special(commitemail);
306 init_buffer(&buffer, &size);
307 add_buffer(&buffer, &size, "tree %s\n", sha1_to_hex(tree_sha1));
310 * NOTE! This ordering means that the same exact tree merged with a
311 * different order of parents will be a _different_ changeset even
312 * if everything else stays the same.
314 for (i = 0; i < parents; i++)
315 add_buffer(&buffer, &size, "parent %s\n", sha1_to_hex(parent_sha1[i]));
317 /* Person/date information */
318 add_buffer(&buffer, &size, "author %s <%s> %s\n", gecos, email, date);
319 add_buffer(&buffer, &size, "committer %s <%s> %s\n\n", commitgecos, commitemail, realdate);
321 /* And add the comment */
322 while (fgets(comment, sizeof(comment), stdin) != NULL)
323 add_buffer(&buffer, &size, "%s", comment);
325 write_sha1_file(buffer, size, "commit", commit_sha1);
326 printf("%s\n", sha1_to_hex(commit_sha1));