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 }