Andrew's git - gitweb.git/blob

   1/*
   2 * GIT - The information manager from hell
   3 *
   4 * Copyright (C) Linus Torvalds, 2005
   5 */
   6#include "cache.h"
   7#include "blob.h"
   8#include "tree.h"
   9#include "commit.h"
  10#include "quote.h"
  11#include "builtin.h"
  12
  13static int line_termination = '\n';
  14#define LS_RECURSIVE 1
  15#define LS_TREE_ONLY 2
  16#define LS_SHOW_TREES 4
  17#define LS_NAME_ONLY 8
  18#define LS_SHOW_SIZE 16
  19static int abbrev;
  20static int ls_options;
  21static const char **pathspec;
  22static int chomp_prefix;
  23static const char *ls_tree_prefix;
  24
  25static const char ls_tree_usage[] =
  26        "git-ls-tree [-d] [-r] [-t] [-l] [-z] [--name-only] [--name-status] [--full-name] [--abbrev[=<n>]] <tree-ish> [path...]";
  27
  28static int show_recursive(const char *base, int baselen, const char *pathname)
  29{
  30        const char **s;
  31
  32        if (ls_options & LS_RECURSIVE)
  33                return 1;
  34
  35        s = pathspec;
  36        if (!s)
  37                return 0;
  38
  39        for (;;) {
  40                const char *spec = *s++;
  41                int len, speclen;
  42
  43                if (!spec)
  44                        return 0;
  45                if (strncmp(base, spec, baselen))
  46                        continue;
  47                len = strlen(pathname);
  48                spec += baselen;
  49                speclen = strlen(spec);
  50                if (speclen <= len)
  51                        continue;
  52                if (memcmp(pathname, spec, len))
  53                        continue;
  54                return 1;
  55        }
  56}
  57
  58static int show_tree(const unsigned char *sha1, const char *base, int baselen,
  59                     const char *pathname, unsigned mode, int stage)
  60{
  61        int retval = 0;
  62        const char *type = blob_type;
  63        unsigned long size;
  64
  65        if (S_ISGITLINK(mode)) {
  66                /*
  67                 * Maybe we want to have some recursive version here?
  68                 *
  69                 * Something like:
  70                 *
  71                if (show_subprojects(base, baselen, pathname)) {
  72                        if (fork()) {
  73                                chdir(base);
  74                                exec ls-tree;
  75                        }
  76                        waitpid();
  77                }
  78                 *
  79                 * ..or similar..
  80                 */
  81                type = commit_type;
  82        } else if (S_ISDIR(mode)) {
  83                if (show_recursive(base, baselen, pathname)) {
  84                        retval = READ_TREE_RECURSIVE;
  85                        if (!(ls_options & LS_SHOW_TREES))
  86                                return retval;
  87                }
  88                type = tree_type;
  89        }
  90        else if (ls_options & LS_TREE_ONLY)
  91                return 0;
  92
  93        if (chomp_prefix &&
  94            (baselen < chomp_prefix || memcmp(ls_tree_prefix, base, chomp_prefix)))
  95                return 0;
  96
  97        if (!(ls_options & LS_NAME_ONLY)) {
  98                if (ls_options & LS_SHOW_SIZE) {
  99                        if (!strcmp(type, blob_type)) {
 100                                sha1_object_info(sha1, &size);
 101                                printf("%06o %s %s %7lu\t", mode, type,
 102                                       abbrev ? find_unique_abbrev(sha1, abbrev)
 103                                              : sha1_to_hex(sha1),
 104                                       size);
 105                        } else
 106                                printf("%06o %s %s %7c\t", mode, type,
 107                                       abbrev ? find_unique_abbrev(sha1, abbrev)
 108                                              : sha1_to_hex(sha1),
 109                                       '-');
 110                } else
 111                        printf("%06o %s %s\t", mode, type,
 112                               abbrev ? find_unique_abbrev(sha1, abbrev)
 113                                      : sha1_to_hex(sha1));
 114        }
 115        write_name_quotedpfx(base + chomp_prefix, baselen - chomp_prefix,
 116                          pathname, stdout, line_termination);
 117        return retval;
 118}
 119
 120int cmd_ls_tree(int argc, const char **argv, const char *prefix)
 121{
 122        unsigned char sha1[20];
 123        struct tree *tree;
 124
 125        git_config(git_default_config);
 126        ls_tree_prefix = prefix;
 127        if (prefix && *prefix)
 128                chomp_prefix = strlen(prefix);
 129        while (1 < argc && argv[1][0] == '-') {
 130                switch (argv[1][1]) {
 131                case 'z':
 132                        line_termination = 0;
 133                        break;
 134                case 'r':
 135                        ls_options |= LS_RECURSIVE;
 136                        break;
 137                case 'd':
 138                        ls_options |= LS_TREE_ONLY;
 139                        break;
 140                case 't':
 141                        ls_options |= LS_SHOW_TREES;
 142                        break;
 143                case 'l':
 144                        ls_options |= LS_SHOW_SIZE;
 145                        break;
 146                case '-':
 147                        if (!strcmp(argv[1]+2, "name-only") ||
 148                            !strcmp(argv[1]+2, "name-status")) {
 149                                ls_options |= LS_NAME_ONLY;
 150                                break;
 151                        }
 152                        if (!strcmp(argv[1]+2, "long")) {
 153                                ls_options |= LS_SHOW_SIZE;
 154                                break;
 155                        }
 156                        if (!strcmp(argv[1]+2, "full-name")) {
 157                                chomp_prefix = 0;
 158                                break;
 159                        }
 160                        if (!prefixcmp(argv[1]+2, "abbrev=")) {
 161                                abbrev = strtoul(argv[1]+9, NULL, 10);
 162                                if (abbrev && abbrev < MINIMUM_ABBREV)
 163                                        abbrev = MINIMUM_ABBREV;
 164                                else if (abbrev > 40)
 165                                        abbrev = 40;
 166                                break;
 167                        }
 168                        if (!strcmp(argv[1]+2, "abbrev")) {
 169                                abbrev = DEFAULT_ABBREV;
 170                                break;
 171                        }
 172                        /* otherwise fallthru */
 173                default:
 174                        usage(ls_tree_usage);
 175                }
 176                argc--; argv++;
 177        }
 178        /* -d -r should imply -t, but -d by itself should not have to. */
 179        if ( (LS_TREE_ONLY|LS_RECURSIVE) ==
 180            ((LS_TREE_ONLY|LS_RECURSIVE) & ls_options))
 181                ls_options |= LS_SHOW_TREES;
 182
 183        if (argc < 2)
 184                usage(ls_tree_usage);
 185        if (get_sha1(argv[1], sha1))
 186                die("Not a valid object name %s", argv[1]);
 187
 188        pathspec = get_pathspec(prefix, argv + 2);
 189        tree = parse_tree_indirect(sha1);
 190        if (!tree)
 191                die("not a tree object");
 192        read_tree_recursive(tree, "", 0, 0, pathspec, show_tree);
 193
 194        return 0;
 195}