Merge branch 'sb/indent-heuristic-optim'
[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 "config.h"
8 #include "object-store.h"
9 #include "repository.h"
10 #include "commit.h"
11 #include "tree.h"
12 #include "builtin.h"
13 #include "utf8.h"
14 #include "gpg-interface.h"
15
16 static const char commit_tree_usage[] = "git commit-tree [(-p <sha1>)...] [-S[<keyid>]] [-m <message>] [-F <file>] <sha1>";
17
18 static const char *sign_commit;
19
20 static void new_parent(struct commit *parent, struct commit_list **parents_p)
21 {
22         struct object_id *oid = &parent->object.oid;
23         struct commit_list *parents;
24         for (parents = *parents_p; parents; parents = parents->next) {
25                 if (parents->item == parent) {
26                         error("duplicate parent %s ignored", oid_to_hex(oid));
27                         return;
28                 }
29                 parents_p = &parents->next;
30         }
31         commit_list_insert(parent, parents_p);
32 }
33
34 static int commit_tree_config(const char *var, const char *value, void *cb)
35 {
36         int status = git_gpg_config(var, value, NULL);
37         if (status)
38                 return status;
39         return git_default_config(var, value, cb);
40 }
41
42 int cmd_commit_tree(int argc, const char **argv, const char *prefix)
43 {
44         int i, got_tree = 0;
45         struct commit_list *parents = NULL;
46         struct object_id tree_oid;
47         struct object_id commit_oid;
48         struct strbuf buffer = STRBUF_INIT;
49
50         git_config(commit_tree_config, NULL);
51
52         if (argc < 2 || !strcmp(argv[1], "-h"))
53                 usage(commit_tree_usage);
54
55         for (i = 1; i < argc; i++) {
56                 const char *arg = argv[i];
57                 if (!strcmp(arg, "-p")) {
58                         struct object_id oid;
59                         if (argc <= ++i)
60                                 usage(commit_tree_usage);
61                         if (get_oid_commit(argv[i], &oid))
62                                 die("Not a valid object name %s", argv[i]);
63                         assert_oid_type(&oid, OBJ_COMMIT);
64                         new_parent(lookup_commit(the_repository, &oid),
65                                                  &parents);
66                         continue;
67                 }
68
69                 if (skip_prefix(arg, "-S", &sign_commit))
70                         continue;
71
72                 if (!strcmp(arg, "--no-gpg-sign")) {
73                         sign_commit = NULL;
74                         continue;
75                 }
76
77                 if (!strcmp(arg, "-m")) {
78                         if (argc <= ++i)
79                                 usage(commit_tree_usage);
80                         if (buffer.len)
81                                 strbuf_addch(&buffer, '\n');
82                         strbuf_addstr(&buffer, argv[i]);
83                         strbuf_complete_line(&buffer);
84                         continue;
85                 }
86
87                 if (!strcmp(arg, "-F")) {
88                         int fd;
89
90                         if (argc <= ++i)
91                                 usage(commit_tree_usage);
92                         if (buffer.len)
93                                 strbuf_addch(&buffer, '\n');
94                         if (!strcmp(argv[i], "-"))
95                                 fd = 0;
96                         else {
97                                 fd = open(argv[i], O_RDONLY);
98                                 if (fd < 0)
99                                         die_errno("git commit-tree: failed to open '%s'",
100                                                   argv[i]);
101                         }
102                         if (strbuf_read(&buffer, fd, 0) < 0)
103                                 die_errno("git commit-tree: failed to read '%s'",
104                                           argv[i]);
105                         if (fd && close(fd))
106                                 die_errno("git commit-tree: failed to close '%s'",
107                                           argv[i]);
108                         continue;
109                 }
110
111                 if (get_oid_tree(arg, &tree_oid))
112                         die("Not a valid object name %s", arg);
113                 if (got_tree)
114                         die("Cannot give more than one trees");
115                 got_tree = 1;
116         }
117
118         if (!buffer.len) {
119                 if (strbuf_read(&buffer, 0, 0) < 0)
120                         die_errno("git commit-tree: failed to read");
121         }
122
123         if (commit_tree(buffer.buf, buffer.len, &tree_oid, parents, &commit_oid,
124                         NULL, sign_commit)) {
125                 strbuf_release(&buffer);
126                 return 1;
127         }
128
129         printf("%s\n", oid_to_hex(&commit_oid));
130         strbuf_release(&buffer);
131         return 0;
132 }