builtin-ls-tree.c

   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
  13 static 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
  19 static int abbrev;
  20 static int ls_options;
  21 static const char **pathspec;
  22 static int chomp_prefix;
  23 static const char *ls_tree_prefix;
  24
  25 static 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
  28 static 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
  58 static 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                         retval = READ_TREE_RECURSIVE;
  73                  *
  74                  */
  75                 type = commit_type;
  76         } else if (S_ISDIR(mode)) {
  77                 if (show_recursive(base, baselen, pathname)) {
  78                         retval = READ_TREE_RECURSIVE;
  79                         if (!(ls_options & LS_SHOW_TREES))
  80                                 return retval;
  81                 }
  82                 type = tree_type;
  83         }
  84         else if (ls_options & LS_TREE_ONLY)
  85                 return 0;
  86
  87         if (chomp_prefix &&
  88             (baselen < chomp_prefix || memcmp(ls_tree_prefix, base, chomp_prefix)))
  89                 return 0;
  90
  91         if (!(ls_options & LS_NAME_ONLY)) {
  92                 if (ls_options & LS_SHOW_SIZE) {
  93                         if (!strcmp(type, blob_type)) {
  94                                 sha1_object_info(sha1, &size);
  95                                 printf("%06o %s %s %7lu\t", mode, type,
  96                                        abbrev ? find_unique_abbrev(sha1, abbrev)
  97                                               : sha1_to_hex(sha1),
  98                                        size);
  99                         } else
 100                                 printf("%06o %s %s %7c\t", mode, type,
 101                                        abbrev ? find_unique_abbrev(sha1, abbrev)
 102                                               : sha1_to_hex(sha1),
 103                                        '-');
 104                 } else
 105                         printf("%06o %s %s\t", mode, type,
 106                                abbrev ? find_unique_abbrev(sha1, abbrev)
 107                                       : sha1_to_hex(sha1));
 108         }
 109         write_name_quotedpfx(base + chomp_prefix, baselen - chomp_prefix,
 110                           pathname, stdout, line_termination);
 111         return retval;
 112 }
 113
 114 int cmd_ls_tree(int argc, const char **argv, const char *prefix)
 115 {
 116         unsigned char sha1[20];
 117         struct tree *tree;
 118
 119         git_config(git_default_config, NULL);
 120         ls_tree_prefix = prefix;
 121         if (prefix && *prefix)
 122                 chomp_prefix = strlen(prefix);
 123         while (1 < argc && argv[1][0] == '-') {
 124                 switch (argv[1][1]) {
 125                 case 'z':
 126                         line_termination = 0;
 127                         break;
 128                 case 'r':
 129                         ls_options |= LS_RECURSIVE;
 130                         break;
 131                 case 'd':
 132                         ls_options |= LS_TREE_ONLY;
 133                         break;
 134                 case 't':
 135                         ls_options |= LS_SHOW_TREES;
 136                         break;
 137                 case 'l':
 138                         ls_options |= LS_SHOW_SIZE;
 139                         break;
 140                 case '-':
 141                         if (!strcmp(argv[1]+2, "name-only") ||
 142                             !strcmp(argv[1]+2, "name-status")) {
 143                                 ls_options |= LS_NAME_ONLY;
 144                                 break;
 145                         }
 146                         if (!strcmp(argv[1]+2, "long")) {
 147                                 ls_options |= LS_SHOW_SIZE;
 148                                 break;
 149                         }
 150                         if (!strcmp(argv[1]+2, "full-name")) {
 151                                 chomp_prefix = 0;
 152                                 break;
 153                         }
 154                         if (!strcmp(argv[1]+2, "full-tree")) {
 155                                 ls_tree_prefix = prefix = NULL;
 156                                 chomp_prefix = 0;
 157                                 break;
 158                         }
 159                         if (!prefixcmp(argv[1]+2, "abbrev=")) {
 160                                 abbrev = strtoul(argv[1]+9, NULL, 10);
 161                                 if (abbrev && abbrev < MINIMUM_ABBREV)
 162                                         abbrev = MINIMUM_ABBREV;
 163                                 else if (abbrev > 40)
 164                                         abbrev = 40;
 165                                 break;
 166                         }
 167                         if (!strcmp(argv[1]+2, "abbrev")) {
 168                                 abbrev = DEFAULT_ABBREV;
 169                                 break;
 170                         }
 171                         /* otherwise fallthru */
 172                 default:
 173                         usage(ls_tree_usage);
 174                 }
 175                 argc--; argv++;
 176         }
 177         /* -d -r should imply -t, but -d by itself should not have to. */
 178         if ( (LS_TREE_ONLY|LS_RECURSIVE) ==
 179             ((LS_TREE_ONLY|LS_RECURSIVE) & ls_options))
 180                 ls_options |= LS_SHOW_TREES;
 181
 182         if (argc < 2)
 183                 usage(ls_tree_usage);
 184         if (get_sha1(argv[1], sha1))
 185                 die("Not a valid object name %s", argv[1]);
 186
 187         pathspec = get_pathspec(prefix, argv + 2);
 188         tree = parse_tree_indirect(sha1);
 189         if (!tree)
 190                 die("not a tree object");
 191         read_tree_recursive(tree, "", 0, 0, pathspec, show_tree, NULL);
 192
 193         return 0;
 194 }