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