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] [--full-tree] [--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, void *context)
  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 similar to this incomplete example:
  70                 *
  71                if (show_subprojects(base, baselen, pathname)) {
  72                        struct child_process ls_tree;
  73
  74                        ls_tree.dir = base;
  75                        ls_tree.argv = ls-tree;
  76                        start_command(&ls_tree);
  77                }
  78                 *
  79                 */
  80                type = commit_type;
  81        } else if (S_ISDIR(mode)) {
  82                if (show_recursive(base, baselen, pathname)) {
  83                        retval = READ_TREE_RECURSIVE;
  84                        if (!(ls_options & LS_SHOW_TREES))
  85                                return retval;
  86                }
  87                type = tree_type;
  88        }
  89        else if (ls_options & LS_TREE_ONLY)
  90                return 0;
  91
  92        if (chomp_prefix &&
  93            (baselen < chomp_prefix || memcmp(ls_tree_prefix, base, chomp_prefix)))
  94                return 0;
  95
  96        if (!(ls_options & LS_NAME_ONLY)) {
  97                if (ls_options & LS_SHOW_SIZE) {
  98                        if (!strcmp(type, blob_type)) {
  99                                sha1_object_info(sha1, &size);
 100                                printf("%06o %s %s %7lu\t", mode, type,
 101                                       abbrev ? find_unique_abbrev(sha1, abbrev)
 102                                              : sha1_to_hex(sha1),
 103                                       size);
 104                        } else
 105                                printf("%06o %s %s %7c\t", mode, type,
 106                                       abbrev ? find_unique_abbrev(sha1, abbrev)
 107                                              : sha1_to_hex(sha1),
 108                                       '-');
 109                } else
 110                        printf("%06o %s %s\t", mode, type,
 111                               abbrev ? find_unique_abbrev(sha1, abbrev)
 112                                      : sha1_to_hex(sha1));
 113        }
 114        write_name_quotedpfx(base + chomp_prefix, baselen - chomp_prefix,
 115                          pathname, stdout, line_termination);
 116        return retval;
 117}
 118
 119int cmd_ls_tree(int argc, const char **argv, const char *prefix)
 120{
 121        unsigned char sha1[20];
 122        struct tree *tree;
 123
 124        git_config(git_default_config, NULL);
 125        ls_tree_prefix = prefix;
 126        if (prefix && *prefix)
 127                chomp_prefix = strlen(prefix);
 128        while (1 < argc && argv[1][0] == '-') {
 129                switch (argv[1][1]) {
 130                case 'z':
 131                        line_termination = 0;
 132                        break;
 133                case 'r':
 134                        ls_options |= LS_RECURSIVE;
 135                        break;
 136                case 'd':
 137                        ls_options |= LS_TREE_ONLY;
 138                        break;
 139                case 't':
 140                        ls_options |= LS_SHOW_TREES;
 141                        break;
 142                case 'l':
 143                        ls_options |= LS_SHOW_SIZE;
 144                        break;
 145                case '-':
 146                        if (!strcmp(argv[1]+2, "name-only") ||
 147                            !strcmp(argv[1]+2, "name-status")) {
 148                                ls_options |= LS_NAME_ONLY;
 149                                break;
 150                        }
 151                        if (!strcmp(argv[1]+2, "long")) {
 152                                ls_options |= LS_SHOW_SIZE;
 153                                break;
 154                        }
 155                        if (!strcmp(argv[1]+2, "full-name")) {
 156                                chomp_prefix = 0;
 157                                break;
 158                        }
 159                        if (!strcmp(argv[1]+2, "full-tree")) {
 160                                ls_tree_prefix = prefix = NULL;
 161                                chomp_prefix = 0;
 162                                break;
 163                        }
 164                        if (!prefixcmp(argv[1]+2, "abbrev=")) {
 165                                abbrev = strtoul(argv[1]+9, NULL, 10);
 166                                if (abbrev && abbrev < MINIMUM_ABBREV)
 167                                        abbrev = MINIMUM_ABBREV;
 168                                else if (abbrev > 40)
 169                                        abbrev = 40;
 170                                break;
 171                        }
 172                        if (!strcmp(argv[1]+2, "abbrev")) {
 173                                abbrev = DEFAULT_ABBREV;
 174                                break;
 175                        }
 176                        /* otherwise fallthru */
 177                default:
 178                        usage(ls_tree_usage);
 179                }
 180                argc--; argv++;
 181        }
 182        /* -d -r should imply -t, but -d by itself should not have to. */
 183        if ( (LS_TREE_ONLY|LS_RECURSIVE) ==
 184            ((LS_TREE_ONLY|LS_RECURSIVE) & ls_options))
 185                ls_options |= LS_SHOW_TREES;
 186
 187        if (argc < 2)
 188                usage(ls_tree_usage);
 189        if (get_sha1(argv[1], sha1))
 190                die("Not a valid object name %s", argv[1]);
 191
 192        pathspec = get_pathspec(prefix, argv + 2);
 193        tree = parse_tree_indirect(sha1);
 194        if (!tree)
 195                die("not a tree object");
 196        read_tree_recursive(tree, "", 0, 0, pathspec, show_tree, NULL);
 197
 198        return 0;
 199}