Merge branch 'sb/submodule-deinit-all'
[git] / builtin / commit-tree.c
1 /*
2  * GIT - The information manager from hell
3  *
4  * Copyright (C) Linus Torvalds, 2005
5  */
6 #include "cache.h"
7 #include "commit.h"
8 #include "tree.h"
9 #include "builtin.h"
10 #include "utf8.h"
11 #include "gpg-interface.h"
12
13 static const char commit_tree_usage[] = "git commit-tree [(-p <sha1>)...] [-S[<keyid>]] [-m <message>] [-F <file>] <sha1>";
14
15 static const char *sign_commit;
16
17 static void new_parent(struct commit *parent, struct commit_list **parents_p)
18 {
19         struct object_id *oid = &parent->object.oid;
20         struct commit_list *parents;
21         for (parents = *parents_p; parents; parents = parents->next) {
22                 if (parents->item == parent) {
23                         error("duplicate parent %s ignored", oid_to_hex(oid));
24                         return;
25                 }
26                 parents_p = &parents->next;
27         }
28         commit_list_insert(parent, parents_p);
29 }
30
31 static int commit_tree_config(const char *var, const char *value, void *cb)
32 {
33         int status = git_gpg_config(var, value, NULL);
34         if (status)
35                 return status;
36         return git_default_config(var, value, cb);
37 }
38
39 int cmd_commit_tree(int argc, const char **argv, const char *prefix)
40 {
41         int i, got_tree = 0;
42         struct commit_list *parents = NULL;
43         unsigned char tree_sha1[20];
44         unsigned char commit_sha1[20];
45         struct strbuf buffer = STRBUF_INIT;
46
47         git_config(commit_tree_config, NULL);
48
49         if (argc < 2 || !strcmp(argv[1], "-h"))
50                 usage(commit_tree_usage);
51
52         for (i = 1; i < argc; i++) {
53                 const char *arg = argv[i];
54                 if (!strcmp(arg, "-p")) {
55                         unsigned char sha1[20];
56                         if (argc <= ++i)
57                                 usage(commit_tree_usage);
58                         if (get_sha1_commit(argv[i], sha1))
59                                 die("Not a valid object name %s", argv[i]);
60                         assert_sha1_type(sha1, OBJ_COMMIT);
61                         new_parent(lookup_commit(sha1), &parents);
62                         continue;
63                 }
64
65                 if (skip_prefix(arg, "-S", &sign_commit))
66                         continue;
67
68                 if (!strcmp(arg, "--no-gpg-sign")) {
69                         sign_commit = NULL;
70                         continue;
71                 }
72
73                 if (!strcmp(arg, "-m")) {
74                         if (argc <= ++i)
75                                 usage(commit_tree_usage);
76                         if (buffer.len)
77                                 strbuf_addch(&buffer, '\n');
78                         strbuf_addstr(&buffer, argv[i]);
79                         strbuf_complete_line(&buffer);
80                         continue;
81                 }
82
83                 if (!strcmp(arg, "-F")) {
84                         int fd;
85
86                         if (argc <= ++i)
87                                 usage(commit_tree_usage);
88                         if (buffer.len)
89                                 strbuf_addch(&buffer, '\n');
90                         if (!strcmp(argv[i], "-"))
91                                 fd = 0;
92                         else {
93                                 fd = open(argv[i], O_RDONLY);
94                                 if (fd < 0)
95                                         die_errno("git commit-tree: failed to open '%s'",
96                                                   argv[i]);
97                         }
98                         if (strbuf_read(&buffer, fd, 0) < 0)
99                                 die_errno("git commit-tree: failed to read '%s'",
100                                           argv[i]);
101                         if (fd && close(fd))
102                                 die_errno("git commit-tree: failed to close '%s'",
103                                           argv[i]);
104                         strbuf_complete_line(&buffer);
105                         continue;
106                 }
107
108                 if (get_sha1_tree(arg, tree_sha1))
109                         die("Not a valid object name %s", arg);
110                 if (got_tree)
111                         die("Cannot give more than one trees");
112                 got_tree = 1;
113         }
114
115         if (!buffer.len) {
116                 if (strbuf_read(&buffer, 0, 0) < 0)
117                         die_errno("git commit-tree: failed to read");
118         }
119
120         if (commit_tree(buffer.buf, buffer.len, tree_sha1, parents,
121                         commit_sha1, NULL, sign_commit)) {
122                 strbuf_release(&buffer);
123                 return 1;
124         }
125
126         printf("%s\n", sha1_to_hex(commit_sha1));
127         strbuf_release(&buffer);
128         return 0;
129 }