2 * GIT - The information manager from hell
4 * Copyright (C) Linus Torvalds, 2005
14 #define BLOCKING (1ul << 14)
15 #define ORIG_OFFSET (40)
18 * Leave space at the beginning to insert the tag
19 * once we know how big things are.
21 * FIXME! Share the code with "write-tree.c"
23 static void init_buffer(char **bufp, unsigned int *sizep)
25 char *buf = malloc(BLOCKING);
26 memset(buf, 0, ORIG_OFFSET);
31 static void add_buffer(char **bufp, unsigned int *sizep, const char *fmt, ...)
36 unsigned long alloc, size, newsize;
40 len = vsnprintf(one_line, sizeof(one_line), fmt, args);
44 alloc = (size + 32767) & ~32767;
46 if (newsize > alloc) {
47 alloc = (newsize + 32767) & ~32767;
48 buf = realloc(buf, alloc);
52 memcpy(buf + size, one_line, len);
55 static int prepend_integer(char *buffer, unsigned val, int i)
59 buffer[--i] = '0' + (val % 10);
65 static void finish_buffer(char *tag, char **bufp, unsigned int *sizep)
70 unsigned int size = *sizep;
72 offset = prepend_integer(buf, size - ORIG_OFFSET, ORIG_OFFSET);
77 memcpy(buf, tag, taglen);
83 static void remove_special(char *p)
86 char *dst = p, *src = p;
92 case '\n': case '<': case '>':
101 * Go back, and remove crud from the end: some people
102 * have commas etc in their gecos field
106 unsigned char c = *dst;
108 case ',': case ';': case '.':
116 static const char *month_names[] = {
117 "Jan", "Feb", "Mar", "Apr", "May", "Jun",
118 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
121 static const char *weekday_names[] = {
122 "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"
126 static char *skipfws(char *str)
128 while (isspace(*str))
134 /* Gr. strptime is crap for this; it doesn't have a way to require RFC2822
135 (i.e. English) day/month names, and it doesn't work correctly with %z. */
136 static void parse_rfc2822_date(char *date, char *result, int maxlen)
143 memset(&tm, 0, sizeof(tm));
148 for (i=0; i<7; i++) {
149 if (!strncmp(p,weekday_names[i],3) && p[3] == ',') {
159 tm.tm_mday = strtoul(p, &p, 10);
161 if (tm.tm_mday < 1 || tm.tm_mday > 31)
171 for (i=0; i<12; i++) {
172 if (!strncmp(p, month_names[i], 3) && isspace(p[3])) {
174 p = skipfws(p+strlen(month_names[i]));
178 return; /* Error -- bad month */
182 tm.tm_year = strtoul(p, &p, 10);
184 if (!tm.tm_year && !isspace(*p))
187 if (tm.tm_year > 1900)
195 tm.tm_hour = strtoul(p, &p, 10);
197 if (!tm.tm_hour > 23)
201 return; /* Error -- bad time */
207 tm.tm_min = strtoul(p, &p, 10);
216 return; /* Error -- bad time */
222 tm.tm_sec = strtoul(p, &p, 10);
240 if (!isdigit(p[1]) || !isdigit(p[2]) || !isdigit(p[3]) || !isdigit(p[4]))
243 i = strtoul(p+1, NULL, 10);
244 offset *= ((i % 100) + ((i / 100) * 60));
246 if (*(skipfws(p + 5)))
249 then = mktime(&tm); /* mktime appears to ignore the GMT offset, stupidly */
255 snprintf(result, maxlen, "%lu %5.5s", then, p);
258 static void check_valid(unsigned char *sha1, const char *expect)
264 buf = read_sha1_file(sha1, type, &size);
265 if (!buf || strcmp(type, expect))
266 die("%s is not a valid '%s' object", sha1_to_hex(sha1), expect);
271 * Having more than two parents may be strange, but hey, there's
272 * no conceptual reason why the file format couldn't accept multi-way
273 * merges. It might be the "union" of several packages, for example.
275 * I don't really expect that to happen, but this is here to make
276 * it clear that _conceptually_ it's ok..
278 #define MAXPARENT (16)
280 int main(int argc, char **argv)
284 unsigned char tree_sha1[20];
285 unsigned char parent_sha1[MAXPARENT][20];
286 unsigned char commit_sha1[20];
287 char *gecos, *realgecos;
288 char *email, realemail[1000];
289 char date[20], realdate[20];
298 if (argc < 2 || get_sha1_hex(argv[1], tree_sha1) < 0)
299 usage("commit-tree <sha1> [-p <sha1>]* < changelog");
301 check_valid(tree_sha1, "tree");
302 for (i = 2; i < argc; i += 2) {
304 a = argv[i]; b = argv[i+1];
305 if (!b || strcmp(a, "-p") || get_sha1_hex(b, parent_sha1[parents]))
306 usage("commit-tree <sha1> [-p <sha1>]* < changelog");
307 check_valid(parent_sha1[parents], "commit");
311 fprintf(stderr, "Committing initial tree %s\n", argv[1]);
312 pw = getpwuid(getuid());
314 die("You don't exist. Go away!");
315 realgecos = pw->pw_gecos;
316 len = strlen(pw->pw_name);
317 memcpy(realemail, pw->pw_name, len);
318 realemail[len] = '@';
319 gethostname(realemail+len+1, sizeof(realemail)-len-1);
321 tm = localtime(&now);
323 strftime(realdate, sizeof(realdate), "%s %z", tm);
324 strcpy(date, realdate);
326 gecos = getenv("AUTHOR_NAME") ? : realgecos;
327 email = getenv("AUTHOR_EMAIL") ? : realemail;
328 audate = getenv("AUTHOR_DATE");
330 parse_rfc2822_date(audate, date, sizeof(date));
332 remove_special(gecos); remove_special(realgecos);
333 remove_special(email); remove_special(realemail);
335 init_buffer(&buffer, &size);
336 add_buffer(&buffer, &size, "tree %s\n", sha1_to_hex(tree_sha1));
339 * NOTE! This ordering means that the same exact tree merged with a
340 * different order of parents will be a _different_ changeset even
341 * if everything else stays the same.
343 for (i = 0; i < parents; i++)
344 add_buffer(&buffer, &size, "parent %s\n", sha1_to_hex(parent_sha1[i]));
346 /* Person/date information */
347 add_buffer(&buffer, &size, "author %s <%s> %s\n", gecos, email, date);
348 add_buffer(&buffer, &size, "committer %s <%s> %s\n\n", realgecos, realemail, realdate);
350 /* And add the comment */
351 while (fgets(comment, sizeof(comment), stdin) != NULL)
352 add_buffer(&buffer, &size, "%s", comment);
354 finish_buffer("commit ", &buffer, &size);
356 write_sha1_file(buffer, size, commit_sha1);
357 printf("%s\n", sha1_to_hex(commit_sha1));