2 * GIT - The information manager from hell
4 * Copyright (C) Linus Torvalds, 2005
12 #define BLOCKING (1ul << 14)
15 * FIXME! Share the code with "write-tree.c"
17 static void init_buffer(char **bufp, unsigned int *sizep)
19 char *buf = xmalloc(BLOCKING);
24 static void add_buffer(char **bufp, unsigned int *sizep, const char *fmt, ...)
29 unsigned long alloc, size, newsize;
33 len = vsnprintf(one_line, sizeof(one_line), fmt, args);
37 alloc = (size + 32767) & ~32767;
39 if (newsize > alloc) {
40 alloc = (newsize + 32767) & ~32767;
41 buf = xrealloc(buf, alloc);
45 memcpy(buf + size, one_line, len);
48 static void remove_special(char *p)
51 char *dst = p, *src = p;
57 case '\n': case '<': case '>':
66 * Go back, and remove crud from the end: some people
67 * have commas etc in their gecos field
71 unsigned char c = *dst;
73 case ',': case ';': case '.':
81 static void check_valid(unsigned char *sha1, const char *expect)
87 buf = read_sha1_file(sha1, type, &size);
88 if (!buf || strcmp(type, expect))
89 die("%s is not a valid '%s' object", sha1_to_hex(sha1), expect);
94 * Having more than two parents is not strange at all, and this is
95 * how multi-way merges are represented.
97 #define MAXPARENT (16)
98 static unsigned char parent_sha1[MAXPARENT][20];
100 static char *commit_tree_usage = "git-commit-tree <sha1> [-p <sha1>]* < changelog";
102 static int new_parent(int idx)
105 unsigned char *sha1 = parent_sha1[idx];
106 for (i = 0; i < idx; i++) {
107 if (!memcmp(parent_sha1[i], sha1, 20)) {
108 error("duplicate parent %s ignored", sha1_to_hex(sha1));
115 int main(int argc, char **argv)
119 unsigned char tree_sha1[20];
120 unsigned char commit_sha1[20];
121 char *gecos, *realgecos, *commitgecos;
122 char *email, *commitemail, realemail[1000];
123 char date[50], realdate[50];
124 char *audate, *cmdate;
130 if (argc < 2 || get_sha1_hex(argv[1], tree_sha1) < 0)
131 usage(commit_tree_usage);
133 check_valid(tree_sha1, "tree");
134 for (i = 2; i < argc; i += 2) {
136 a = argv[i]; b = argv[i+1];
137 if (!b || strcmp(a, "-p") || get_sha1(b, parent_sha1[parents]))
138 usage(commit_tree_usage);
139 check_valid(parent_sha1[parents], "commit");
140 if (new_parent(parents))
144 fprintf(stderr, "Committing initial tree %s\n", argv[1]);
145 pw = getpwuid(getuid());
147 die("You don't exist. Go away!");
148 realgecos = pw->pw_gecos;
149 len = strlen(pw->pw_name);
150 memcpy(realemail, pw->pw_name, len);
151 realemail[len] = '@';
152 gethostname(realemail+len+1, sizeof(realemail)-len-1);
153 if (!strchr(realemail+len+1, '.')) {
154 strcat(realemail, ".");
155 getdomainname(realemail+strlen(realemail), sizeof(realemail)-strlen(realemail)-1);
158 datestamp(realdate, sizeof(realdate));
159 strcpy(date, realdate);
161 commitgecos = gitenv("GIT_COMMITTER_NAME") ? : realgecos;
162 commitemail = gitenv("GIT_COMMITTER_EMAIL") ? : realemail;
163 gecos = gitenv("GIT_AUTHOR_NAME") ? : realgecos;
164 email = gitenv("GIT_AUTHOR_EMAIL") ? : realemail;
165 audate = gitenv("GIT_AUTHOR_DATE");
167 parse_date(audate, date, sizeof(date));
168 cmdate = gitenv("GIT_COMMITTER_DATE");
170 parse_date(cmdate, realdate, sizeof(realdate));
172 remove_special(gecos); remove_special(realgecos); remove_special(commitgecos);
173 remove_special(email); remove_special(realemail); remove_special(commitemail);
175 init_buffer(&buffer, &size);
176 add_buffer(&buffer, &size, "tree %s\n", sha1_to_hex(tree_sha1));
179 * NOTE! This ordering means that the same exact tree merged with a
180 * different order of parents will be a _different_ changeset even
181 * if everything else stays the same.
183 for (i = 0; i < parents; i++)
184 add_buffer(&buffer, &size, "parent %s\n", sha1_to_hex(parent_sha1[i]));
186 /* Person/date information */
187 add_buffer(&buffer, &size, "author %s <%s> %s\n", gecos, email, date);
188 add_buffer(&buffer, &size, "committer %s <%s> %s\n\n", commitgecos, commitemail, realdate);
190 /* And add the comment */
191 while (fgets(comment, sizeof(comment), stdin) != NULL)
192 add_buffer(&buffer, &size, "%s", comment);
194 write_sha1_file(buffer, size, "commit", commit_sha1);
195 printf("%s\n", sha1_to_hex(commit_sha1));