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 #define LS_SHOW_TREES 4
  15 #define LS_NAME_ONLY 8
  16 static int ls_options = 0;
  17 const char **pathspec;
  18
  19 static const char ls_tree_usage[] =
  20         "git-ls-tree [-d] [-r] [-t] [-z] [--name-only] [--name-status] <tree-ish> [path...]";
  21
  22 static int show_recursive(const char *base, int baselen, const char *pathname)
  23 {
  24         const char **s;
  25
  26         if (ls_options & LS_RECURSIVE)
  27                 return 1;
  28
  29         s = pathspec;
  30         if (!s)
  31                 return 0;
  32
  33         for (;;) {
  34                 const char *spec = *s++;
  35                 int len, speclen;
  36
  37                 if (!spec)
  38                         return 0;
  39                 if (strncmp(base, spec, baselen))
  40                         continue;
  41                 len = strlen(pathname);
  42                 spec += baselen;
  43                 speclen = strlen(spec);
  44                 if (speclen <= len)
  45                         continue;
  46                 if (memcmp(pathname, spec, len))
  47                         continue;
  48                 return 1;
  49         }
  50 }
  51
  52 static int show_tree(unsigned char *sha1, const char *base, int baselen, const char *pathname, unsigned mode, int stage)
  53 {
  54         int retval = 0;
  55         const char *type = "blob";
  56
  57         if (S_ISDIR(mode)) {
  58                 if (show_recursive(base, baselen, pathname)) {
  59                         retval = READ_TREE_RECURSIVE;
  60                         if (!(ls_options & LS_SHOW_TREES))
  61                                 return retval;
  62                 }
  63                 type = "tree";
  64         }
  65         else if (ls_options & LS_TREE_ONLY)
  66                 return 0;
  67
  68         if (!(ls_options & LS_NAME_ONLY))
  69                 printf("%06o %s %s\t", mode, type, sha1_to_hex(sha1));
  70         write_name_quoted(base, baselen, pathname, line_termination, stdout);
  71         putchar(line_termination);
  72         return retval;
  73 }
  74
  75 int main(int argc, const char **argv)
  76 {
  77         const char *prefix;
  78         unsigned char sha1[20];
  79         char *buf;
  80         unsigned long size;
  81
  82         prefix = setup_git_directory();
  83         while (1 < argc && argv[1][0] == '-') {
  84                 switch (argv[1][1]) {
  85                 case 'z':
  86                         line_termination = 0;
  87                         break;
  88                 case 'r':
  89                         ls_options |= LS_RECURSIVE;
  90                         break;
  91                 case 'd':
  92                         ls_options |= LS_TREE_ONLY;
  93                         break;
  94                 case 't':
  95                         ls_options |= LS_SHOW_TREES;
  96                         break;
  97                 case '-':
  98                         if (!strcmp(argv[1]+2, "name-only") ||
  99                             !strcmp(argv[1]+2, "name-status")) {
 100                                 ls_options |= LS_NAME_ONLY;
 101                                 break;
 102                         }
 103                         /* otherwise fallthru */
 104                 default:
 105                         usage(ls_tree_usage);
 106                 }
 107                 argc--; argv++;
 108         }
 109         /* -d -r should imply -t, but -d by itself should not have to. */
 110         if ( (LS_TREE_ONLY|LS_RECURSIVE) ==
 111             ((LS_TREE_ONLY|LS_RECURSIVE) & ls_options))
 112                 ls_options |= LS_SHOW_TREES;
 113
 114         if (argc < 2)
 115                 usage(ls_tree_usage);
 116         if (get_sha1(argv[1], sha1) < 0)
 117                 usage(ls_tree_usage);
 118
 119         pathspec = get_pathspec(prefix, argv + 2);
 120         buf = read_object_with_reference(sha1, "tree", &size, NULL);
 121         if (!buf)
 122                 die("not a tree object");
 123         read_tree_recursive(buf, size, "", 0, 0, pathspec, show_tree);
 124
 125         return 0;
 126 }