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 const char **pathspec;
  16
  17 static const char ls_tree_usage[] =
  18         "git-ls-tree [-d] [-r] [-z] <tree-ish> [path...]";
  19
  20 static int show_tree(unsigned char *sha1, const char *base, int baselen, const char *pathname, unsigned mode, int stage)
  21 {
  22         const char *type = "blob";
  23
  24         if (S_ISDIR(mode)) {
  25                 const char **s;
  26                 if (ls_options & LS_RECURSIVE)
  27                         return READ_TREE_RECURSIVE;
  28                 s = pathspec;
  29                 if (s) {
  30                         for (;;) {
  31                                 const char *spec = *s++;
  32                                 int len, speclen;
  33
  34                                 if (!spec)
  35                                         break;
  36                                 if (strncmp(base, spec, baselen))
  37                                         continue;
  38                                 len = strlen(pathname);
  39                                 spec += baselen;
  40                                 speclen = strlen(spec);
  41                                 if (speclen <= len)
  42                                         continue;
  43                                 if (memcmp(pathname, spec, len))
  44                                         continue;
  45                                 return READ_TREE_RECURSIVE;
  46                         }
  47                 }
  48                 type = "tree";
  49         }
  50
  51         printf("%06o %s %s\t", mode, type, sha1_to_hex(sha1));
  52         write_name_quoted(base, baselen, pathname, line_termination, stdout);
  53         putchar(line_termination);
  54         return 0;
  55 }
  56
  57 int main(int argc, const char **argv)
  58 {
  59         const char *prefix;
  60         unsigned char sha1[20];
  61         char *buf;
  62         unsigned long size;
  63
  64         prefix = setup_git_directory();
  65         while (1 < argc && argv[1][0] == '-') {
  66                 switch (argv[1][1]) {
  67                 case 'z':
  68                         line_termination = 0;
  69                         break;
  70                 case 'r':
  71                         ls_options |= LS_RECURSIVE;
  72                         break;
  73                 case 'd':
  74                         ls_options |= LS_TREE_ONLY;
  75                         break;
  76                 default:
  77                         usage(ls_tree_usage);
  78                 }
  79                 argc--; argv++;
  80         }
  81
  82         if (argc < 2)
  83                 usage(ls_tree_usage);
  84         if (get_sha1(argv[1], sha1) < 0)
  85                 usage(ls_tree_usage);
  86
  87         pathspec = get_pathspec(prefix, argv + 2);
  88         buf = read_object_with_reference(sha1, "tree", &size, NULL);
  89         if (!buf)
  90                 die("not a tree object");
  91         read_tree_recursive(buf, size, "", 0, 0, pathspec, show_tree);
  92
  93         return 0;
  94 }