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 = 0;
  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         int retval = 0;
  23
  24         if (S_ISDIR(mode)) {
  25                 type = "tree";
  26                 if (ls_options & LS_RECURSIVE)
  27                         retval = READ_TREE_RECURSIVE;
  28         }
  29
  30         printf("%06o %s %s\t%.*s%s%c", mode, type, sha1_to_hex(sha1), baselen, base, pathname, line_termination);
  31         return retval;
  32 }
  33
  34 int main(int argc, const char **argv)
  35 {
  36         const char **path, *prefix;
  37         unsigned char sha1[20];
  38         char *buf;
  39         unsigned long size;
  40
  41         prefix = setup_git_directory();
  42         while (1 < argc && argv[1][0] == '-') {
  43                 switch (argv[1][1]) {
  44                 case 'z':
  45                         line_termination = 0;
  46                         break;
  47                 case 'r':
  48                         ls_options |= LS_RECURSIVE;
  49                         break;
  50                 case 'd':
  51                         ls_options |= LS_TREE_ONLY;
  52                         break;
  53                 default:
  54                         usage(ls_tree_usage);
  55                 }
  56                 argc--; argv++;
  57         }
  58
  59         if (argc < 2)
  60                 usage(ls_tree_usage);
  61         if (get_sha1(argv[1], sha1) < 0)
  62                 usage(ls_tree_usage);
  63
  64         path = get_pathspec(prefix, argv + 2);
  65         buf = read_object_with_reference(sha1, "tree", &size, NULL);
  66         if (!buf)
  67                 die("not a tree object");
  68         read_tree_recursive(buf, size, "", 0, 0, path, show_tree);
  69
  70         return 0;
  71 }