Andrew's git - gitweb.git/blob - 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
  13static const char commit_tree_usage[] = "git commit-tree [(-p <sha1>)...] [-S<signer>] [-m <message>] [-F <file>] <sha1> <changelog";
  14
  15static void new_parent(struct commit *parent, struct commit_list **parents_p)
  16{
  17        unsigned char *sha1 = parent->object.sha1;
  18        struct commit_list *parents;
  19        for (parents = *parents_p; parents; parents = parents->next) {
  20                if (parents->item == parent) {
  21                        error("duplicate parent %s ignored", sha1_to_hex(sha1));
  22                        return;
  23                }
  24                parents_p = &parents->next;
  25        }
  26        commit_list_insert(parent, parents_p);
  27}
  28
  29static int commit_tree_config(const char *var, const char *value, void *cb)
  30{
  31        int status = git_gpg_config(var, value, NULL);
  32        if (status)
  33                return status;
  34        return git_default_config(var, value, cb);
  35}
  36
  37int cmd_commit_tree(int argc, const char **argv, const char *prefix)
  38{
  39        int i, got_tree = 0;
  40        struct commit_list *parents = NULL;
  41        unsigned char tree_sha1[20];
  42        unsigned char commit_sha1[20];
  43        struct strbuf buffer = STRBUF_INIT;
  44        const char *sign_commit = NULL;
  45
  46        git_config(commit_tree_config, NULL);
  47
  48        if (argc < 2 || !strcmp(argv[1], "-h"))
  49                usage(commit_tree_usage);
  50
  51        if (get_sha1(argv[1], tree_sha1))
  52                die("Not a valid object name %s", argv[1]);
  53
  54        for (i = 1; i < argc; i++) {
  55                const char *arg = argv[i];
  56                if (!strcmp(arg, "-p")) {
  57                        unsigned char sha1[20];
  58                        if (argc <= ++i)
  59                                usage(commit_tree_usage);
  60                        if (get_sha1(argv[i], sha1))
  61                                die("Not a valid object name %s", argv[i]);
  62                        assert_sha1_type(sha1, OBJ_COMMIT);
  63                        new_parent(lookup_commit(sha1), &parents);
  64                        continue;
  65                }
  66
  67                if (!memcmp(arg, "-S", 2)) {
  68                        sign_commit = arg + 2;
  69                        continue;
  70                }
  71
  72                if (!strcmp(arg, "-m")) {
  73                        if (argc <= ++i)
  74                                usage(commit_tree_usage);
  75                        if (buffer.len)
  76                                strbuf_addch(&buffer, '\n');
  77                        strbuf_addstr(&buffer, argv[i]);
  78                        strbuf_complete_line(&buffer);
  79                        continue;
  80                }
  81
  82                if (!strcmp(arg, "-F")) {
  83                        int fd;
  84
  85                        if (argc <= ++i)
  86                                usage(commit_tree_usage);
  87                        if (buffer.len)
  88                                strbuf_addch(&buffer, '\n');
  89                        if (!strcmp(argv[i], "-"))
  90                                fd = 0;
  91                        else {
  92                                fd = open(argv[i], O_RDONLY);
  93                                if (fd < 0)
  94                                        die_errno("git commit-tree: failed to open '%s'",
  95                                                  argv[i]);
  96                        }
  97                        if (strbuf_read(&buffer, fd, 0) < 0)
  98                                die_errno("git commit-tree: failed to read '%s'",
  99                                          argv[i]);
 100                        if (fd && close(fd))
 101                                die_errno("git commit-tree: failed to close '%s'",
 102                                          argv[i]);
 103                        strbuf_complete_line(&buffer);
 104                        continue;
 105                }
 106
 107                if (get_sha1(arg, tree_sha1))
 108                        die("Not a valid object name %s", arg);
 109                if (got_tree)
 110                        die("Cannot give more than one trees");
 111                got_tree = 1;
 112        }
 113
 114        if (!buffer.len) {
 115                if (strbuf_read(&buffer, 0, 0) < 0)
 116                        die_errno("git commit-tree: failed to read");
 117        }
 118
 119        if (commit_tree(&buffer, tree_sha1, parents, commit_sha1,
 120                        NULL, sign_commit)) {
 121                strbuf_release(&buffer);
 122                return 1;
 123        }
 124
 125        printf("%s\n", sha1_to_hex(commit_sha1));
 126        strbuf_release(&buffer);
 127        return 0;
 128}