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 "quote.h"
  10
  11 static int line_termination = '\n';
  12 #define LS_RECURSIVE 1
  13 #define LS_TREE_ONLY 2
  14 static int ls_options = LS_RECURSIVE;
  15
  16 static const char ls_tree_usage[] =
  17         "git-ls-tree [-d] [-r] [-z] <tree-ish> [path...]";
  18
  19 static int show_tree(unsigned char *sha1, const char *base, int baselen, const char *pathname, unsigned mode, int stage)
  20 {
  21         const char *type = "blob";
  22
  23         if (S_ISDIR(mode)) {
  24                 if (ls_options & LS_RECURSIVE)
  25                         return READ_TREE_RECURSIVE;
  26                 type = "tree";
  27         }
  28
  29         printf("%06o %s %s\t%.*s%s%c", mode, type, sha1_to_hex(sha1), baselen, base, pathname, line_termination);
  30         return 0;
  31 }
  32
  33 int main(int argc, const char **argv)
  34 {
  35         const char **path, *prefix;
  36         unsigned char sha1[20];
  37         char *buf;
  38         unsigned long size;
  39
  40         prefix = setup_git_directory();
  41         while (1 < argc && argv[1][0] == '-') {
  42                 switch (argv[1][1]) {
  43                 case 'z':
  44                         line_termination = 0;
  45                         break;
  46                 case 'r':
  47                         ls_options |= LS_RECURSIVE;
  48                         break;
  49                 case 'd':
  50                         ls_options |= LS_TREE_ONLY;
  51                         break;
  52                 default:
  53                         usage(ls_tree_usage);
  54                 }
  55                 argc--; argv++;
  56         }
  57
  58         if (argc < 2)
  59                 usage(ls_tree_usage);
  60         if (get_sha1(argv[1], sha1) < 0)
  61                 usage(ls_tree_usage);
  62
  63         path = get_pathspec(prefix, argv + 2);
  64         buf = read_object_with_reference(sha1, "tree", &size, NULL);
  65         if (!buf)
  66                 die("not a tree object");
  67         read_tree_recursive(buf, size, "", 0, 0, path, show_tree);
  68
  69         return 0;
  70 }