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 "quote.h"
  10#include "builtin.h"
  11
  12static int line_termination = '\n';
  13#define LS_RECURSIVE 1
  14#define LS_TREE_ONLY 2
  15#define LS_SHOW_TREES 4
  16#define LS_NAME_ONLY 8
  17static int abbrev = 0;
  18static int ls_options = 0;
  19static const char **pathspec;
  20static int chomp_prefix = 0;
  21static const char *prefix;
  22
  23static const char ls_tree_usage[] =
  24        "git-ls-tree [-d] [-r] [-t] [-z] [--name-only] [--name-status] [--full-name] [--abbrev[=<n>]] <tree-ish> [path...]";
  25
  26static int show_recursive(const char *base, int baselen, const char *pathname)
  27{
  28        const char **s;
  29
  30        if (ls_options & LS_RECURSIVE)
  31                return 1;
  32
  33        s = pathspec;
  34        if (!s)
  35                return 0;
  36
  37        for (;;) {
  38                const char *spec = *s++;
  39                int len, speclen;
  40
  41                if (!spec)
  42                        return 0;
  43                if (strncmp(base, spec, baselen))
  44                        continue;
  45                len = strlen(pathname);
  46                spec += baselen;
  47                speclen = strlen(spec);
  48                if (speclen <= len)
  49                        continue;
  50                if (memcmp(pathname, spec, len))
  51                        continue;
  52                return 1;
  53        }
  54}
  55
  56static int show_tree(const unsigned char *sha1, const char *base, int baselen,
  57                     const char *pathname, unsigned mode, int stage)
  58{
  59        int retval = 0;
  60        const char *type = blob_type;
  61
  62        if (S_ISDIR(mode)) {
  63                if (show_recursive(base, baselen, pathname)) {
  64                        retval = READ_TREE_RECURSIVE;
  65                        if (!(ls_options & LS_SHOW_TREES))
  66                                return retval;
  67                }
  68                type = tree_type;
  69        }
  70        else if (ls_options & LS_TREE_ONLY)
  71                return 0;
  72
  73        if (chomp_prefix &&
  74            (baselen < chomp_prefix || memcmp(prefix, base, chomp_prefix)))
  75                return 0;
  76
  77        if (!(ls_options & LS_NAME_ONLY))
  78                printf("%06o %s %s\t", mode, type,
  79                                abbrev ? find_unique_abbrev(sha1,abbrev)
  80                                        : sha1_to_hex(sha1));
  81        write_name_quoted(base + chomp_prefix, baselen - chomp_prefix,
  82                          pathname,
  83                          line_termination, stdout);
  84        putchar(line_termination);
  85        return retval;
  86}
  87
  88int cmd_ls_tree(int argc, const char **argv, char **envp)
  89{
  90        unsigned char sha1[20];
  91        struct tree *tree;
  92
  93        prefix = setup_git_directory();
  94        git_config(git_default_config);
  95        if (prefix && *prefix)
  96                chomp_prefix = strlen(prefix);
  97        while (1 < argc && argv[1][0] == '-') {
  98                switch (argv[1][1]) {
  99                case 'z':
 100                        line_termination = 0;
 101                        break;
 102                case 'r':
 103                        ls_options |= LS_RECURSIVE;
 104                        break;
 105                case 'd':
 106                        ls_options |= LS_TREE_ONLY;
 107                        break;
 108                case 't':
 109                        ls_options |= LS_SHOW_TREES;
 110                        break;
 111                case '-':
 112                        if (!strcmp(argv[1]+2, "name-only") ||
 113                            !strcmp(argv[1]+2, "name-status")) {
 114                                ls_options |= LS_NAME_ONLY;
 115                                break;
 116                        }
 117                        if (!strcmp(argv[1]+2, "full-name")) {
 118                                chomp_prefix = 0;
 119                                break;
 120                        }
 121                        if (!strncmp(argv[1]+2, "abbrev=",7)) {
 122                                abbrev = strtoul(argv[1]+9, NULL, 10);
 123                                if (abbrev && abbrev < MINIMUM_ABBREV)
 124                                        abbrev = MINIMUM_ABBREV;
 125                                else if (abbrev > 40)
 126                                        abbrev = 40;
 127                                break;
 128                        }
 129                        if (!strcmp(argv[1]+2, "abbrev")) {
 130                                abbrev = DEFAULT_ABBREV;
 131                                break;
 132                        }
 133                        /* otherwise fallthru */
 134                default:
 135                        usage(ls_tree_usage);
 136                }
 137                argc--; argv++;
 138        }
 139        /* -d -r should imply -t, but -d by itself should not have to. */
 140        if ( (LS_TREE_ONLY|LS_RECURSIVE) ==
 141            ((LS_TREE_ONLY|LS_RECURSIVE) & ls_options))
 142                ls_options |= LS_SHOW_TREES;
 143
 144        if (argc < 2)
 145                usage(ls_tree_usage);
 146        if (get_sha1(argv[1], sha1))
 147                die("Not a valid object name %s", argv[1]);
 148
 149        pathspec = get_pathspec(prefix, argv + 2);
 150        tree = parse_tree_indirect(sha1);
 151        if (!tree)
 152                die("not a tree object");
 153        read_tree_recursive(tree, "", 0, 0, pathspec, show_tree);
 154
 155        return 0;
 156}