Andrew's git - gitweb.git/blob

b5c40aa22a0b4e66daf46708c33e6b96051f1dda
   1/*
   2 * Builtin "git replace"
   3 *
   4 * Copyright (c) 2008 Christian Couder <chriscool@tuxfamily.org>
   5 *
   6 * Based on builtin-tag.c by Kristian Høgsberg <krh@redhat.com>
   7 * and Carlos Rica <jasampler@gmail.com> that was itself based on
   8 * git-tag.sh and mktag.c by Linus Torvalds.
   9 */
  10
  11#include "cache.h"
  12#include "builtin.h"
  13#include "refs.h"
  14#include "parse-options.h"
  15
  16static const char * const git_replace_usage[] = {
  17        "git replace -d <object>...",
  18        "git replace -l [<pattern>]",
  19        NULL
  20};
  21
  22static int show_reference(const char *refname, const unsigned char *sha1,
  23                          int flag, void *cb_data)
  24{
  25        const char *pattern = cb_data;
  26
  27        if (!fnmatch(pattern, refname, 0))
  28                printf("%s\n", refname);
  29
  30        return 0;
  31}
  32
  33static int list_replace_refs(const char *pattern)
  34{
  35        if (pattern == NULL)
  36                pattern = "*";
  37
  38        for_each_replace_ref(show_reference, (void *) pattern);
  39
  40        return 0;
  41}
  42
  43typedef int (*each_replace_name_fn)(const char *name, const char *ref,
  44                                    const unsigned char *sha1);
  45
  46static int for_each_replace_name(const char **argv, each_replace_name_fn fn)
  47{
  48        const char **p;
  49        char ref[PATH_MAX];
  50        int had_error = 0;
  51        unsigned char sha1[20];
  52
  53        for (p = argv; *p; p++) {
  54                if (snprintf(ref, sizeof(ref), "refs/replace/%s", *p)
  55                                        >= sizeof(ref)) {
  56                        error("replace ref name too long: %.*s...", 50, *p);
  57                        had_error = 1;
  58                        continue;
  59                }
  60                if (!resolve_ref(ref, sha1, 1, NULL)) {
  61                        error("replace ref '%s' not found.", *p);
  62                        had_error = 1;
  63                        continue;
  64                }
  65                if (fn(*p, ref, sha1))
  66                        had_error = 1;
  67        }
  68        return had_error;
  69}
  70
  71static int delete_replace_ref(const char *name, const char *ref,
  72                              const unsigned char *sha1)
  73{
  74        if (delete_ref(ref, sha1, 0))
  75                return 1;
  76        printf("Deleted replace ref '%s'\n", name);
  77        return 0;
  78}
  79
  80int cmd_replace(int argc, const char **argv, const char *prefix)
  81{
  82        int list = 0, delete = 0;
  83        struct option options[] = {
  84                OPT_BOOLEAN('l', NULL, &list, "list replace refs"),
  85                OPT_BOOLEAN('d', NULL, &delete, "delete replace refs"),
  86                OPT_END()
  87        };
  88
  89        argc = parse_options(argc, argv, options, git_replace_usage, 0);
  90
  91        if (list && delete)
  92                usage_with_options(git_replace_usage, options);
  93
  94        if (delete) {
  95                if (argc < 1)
  96                        usage_with_options(git_replace_usage, options);
  97                return for_each_replace_name(argv, delete_replace_ref);
  98        }
  99
 100        /* List refs, even if "list" is not set */
 101        if (argc > 1)
 102                usage_with_options(git_replace_usage, options);
 103
 104        return list_replace_refs(argv[0]);
 105}