Andrew's git - gitweb.git/blob

   1/*
   2 * "git rm" builtin command
   3 *
   4 * Copyright (C) Linus Torvalds 2006
   5 */
   6#include "cache.h"
   7#include "builtin.h"
   8#include "dir.h"
   9#include "cache-tree.h"
  10
  11static const char builtin_rm_usage[] =
  12"git-rm [-n] [-v] [-f] <filepattern>...";
  13
  14static struct {
  15        int nr, alloc;
  16        const char **name;
  17} list;
  18
  19static void add_list(const char *name)
  20{
  21        if (list.nr >= list.alloc) {
  22                list.alloc = alloc_nr(list.alloc);
  23                list.name = xrealloc(list.name, list.alloc * sizeof(const char *));
  24        }
  25        list.name[list.nr++] = name;
  26}
  27
  28static int remove_file(const char *name)
  29{
  30        int ret;
  31        char *slash;
  32
  33        ret = unlink(name);
  34        if (!ret && (slash = strrchr(name, '/'))) {
  35                char *n = strdup(name);
  36                do {
  37                        n[slash - name] = 0;
  38                        name = n;
  39                } while (!rmdir(name) && (slash = strrchr(name, '/')));
  40        }
  41        return ret;
  42}
  43
  44static struct lock_file lock_file;
  45
  46int cmd_rm(int argc, const char **argv, char **envp)
  47{
  48        int i, newfd;
  49        int verbose = 0, show_only = 0, force = 0;
  50        const char *prefix = setup_git_directory();
  51        const char **pathspec;
  52        char *seen;
  53
  54        git_config(git_default_config);
  55
  56        newfd = hold_lock_file_for_update(&lock_file, get_index_file());
  57        if (newfd < 0)
  58                die("unable to create new index file");
  59
  60        if (read_cache() < 0)
  61                die("index file corrupt");
  62
  63        for (i = 1 ; i < argc ; i++) {
  64                const char *arg = argv[i];
  65
  66                if (*arg != '-')
  67                        break;
  68                if (!strcmp(arg, "--")) {
  69                        i++;
  70                        break;
  71                }
  72                if (!strcmp(arg, "-n")) {
  73                        show_only = 1;
  74                        continue;
  75                }
  76                if (!strcmp(arg, "-v")) {
  77                        verbose = 1;
  78                        continue;
  79                }
  80                if (!strcmp(arg, "-f")) {
  81                        force = 1;
  82                        continue;
  83                }
  84                die(builtin_rm_usage);
  85        }
  86        if (argc <= i)
  87                usage(builtin_rm_usage);
  88
  89        pathspec = get_pathspec(prefix, argv + i);
  90        seen = NULL;
  91        for (i = 0; pathspec[i] ; i++)
  92                /* nothing */;
  93        seen = xcalloc(i, 1);
  94
  95        for (i = 0; i < active_nr; i++) {
  96                struct cache_entry *ce = active_cache[i];
  97                if (!match_pathspec(pathspec, ce->name, ce_namelen(ce), 0, seen))
  98                        continue;
  99                add_list(ce->name);
 100        }
 101
 102        if (pathspec) {
 103                const char *match;
 104                for (i = 0; (match = pathspec[i]) != NULL ; i++) {
 105                        if (*match && !seen[i])
 106                                die("pathspec '%s' did not match any files", match);
 107                }
 108        }
 109
 110        /*
 111         * First remove the names from the index: we won't commit
 112         * the index unless all of them succeed
 113         */
 114        for (i = 0; i < list.nr; i++) {
 115                const char *path = list.name[i];
 116                printf("rm '%s'\n", path);
 117
 118                if (remove_file_from_cache(path))
 119                        die("git rm: unable to remove %s", path);
 120                cache_tree_invalidate_path(active_cache_tree, path);
 121        }
 122
 123        if (show_only)
 124                return 0;
 125
 126        /*
 127         * Then, if we used "-f", remove the filenames from the
 128         * workspace. If we fail to remove the first one, we
 129         * abort the "git rm" (but once we've successfully removed
 130         * any file at all, we'll go ahead and commit to it all:
 131         * by then we've already committed ourselves and can't fail
 132         * in the middle)
 133         */
 134        if (force) {
 135                int removed = 0;
 136                for (i = 0; i < list.nr; i++) {
 137                        const char *path = list.name[i];
 138                        if (!remove_file(path)) {
 139                                removed = 1;
 140                                continue;
 141                        }
 142                        if (!removed)
 143                                die("git rm: %s: %s", path, strerror(errno));
 144                }
 145        }
 146
 147        if (active_cache_changed) {
 148                if (write_cache(newfd, active_cache, active_nr) ||
 149                    close(newfd) || commit_lock_file(&lock_file))
 150                        die("Unable to write new index file");
 151        }
 152
 153        return 0;
 154}