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 #include "parse-options.h"
  13 #include "pathspec.h"
  14
  15 static int line_termination = '\n';
  16 #define LS_RECURSIVE 1
  17 #define LS_TREE_ONLY 2
  18 #define LS_SHOW_TREES 4
  19 #define LS_NAME_ONLY 8
  20 #define LS_SHOW_SIZE 16
  21 static int abbrev;
  22 static int ls_options;
  23 static struct pathspec pathspec;
  24 static int chomp_prefix;
  25 static const char *ls_tree_prefix;
  26
  27 static const  char * const ls_tree_usage[] = {
  28         N_("git ls-tree [<options>] <tree-ish> [<path>...]"),
  29         NULL
  30 };
  31
  32 static int show_recursive(const char *base, int baselen, const char *pathname)
  33 {
  34         const char **s;
  35
  36         if (ls_options & LS_RECURSIVE)
  37                 return 1;
  38
  39         s = pathspec.raw;
  40         if (!s)
  41                 return 0;
  42
  43         for (;;) {
  44                 const char *spec = *s++;
  45                 int len, speclen;
  46
  47                 if (!spec)
  48                         return 0;
  49                 if (strncmp(base, spec, baselen))
  50                         continue;
  51                 len = strlen(pathname);
  52                 spec += baselen;
  53                 speclen = strlen(spec);
  54                 if (speclen <= len)
  55                         continue;
  56                 if (spec[len] && spec[len] != '/')
  57                         continue;
  58                 if (memcmp(pathname, spec, len))
  59                         continue;
  60                 return 1;
  61         }
  62 }
  63
  64 static int show_tree(const unsigned char *sha1, const char *base, int baselen,
  65                 const char *pathname, unsigned mode, int stage, void *context)
  66 {
  67         int retval = 0;
  68         const char *type = blob_type;
  69
  70         if (S_ISGITLINK(mode)) {
  71                 /*
  72                  * Maybe we want to have some recursive version here?
  73                  *
  74                  * Something similar to this incomplete example:
  75                  *
  76                 if (show_subprojects(base, baselen, pathname))
  77                         retval = READ_TREE_RECURSIVE;
  78                  *
  79                  */
  80                 type = commit_type;
  81         } else if (S_ISDIR(mode)) {
  82                 if (show_recursive(base, baselen, pathname)) {
  83                         retval = READ_TREE_RECURSIVE;
  84                         if (!(ls_options & LS_SHOW_TREES))
  85                                 return retval;
  86                 }
  87                 type = tree_type;
  88         }
  89         else if (ls_options & LS_TREE_ONLY)
  90                 return 0;
  91
  92         if (chomp_prefix &&
  93             (baselen < chomp_prefix || memcmp(ls_tree_prefix, base, chomp_prefix)))
  94                 return 0;
  95
  96         if (!(ls_options & LS_NAME_ONLY)) {
  97                 if (ls_options & LS_SHOW_SIZE) {
  98                         char size_text[24];
  99                         if (!strcmp(type, blob_type)) {
 100                                 unsigned long size;
 101                                 if (sha1_object_info(sha1, &size) == OBJ_BAD)
 102                                         strcpy(size_text, "BAD");
 103                                 else
 104                                         snprintf(size_text, sizeof(size_text),
 105                                                  "%lu", size);
 106                         } else
 107                                 strcpy(size_text, "-");
 108                         printf("%06o %s %s %7s\t", mode, type,
 109                                find_unique_abbrev(sha1, abbrev),
 110                                size_text);
 111                 } else
 112                         printf("%06o %s %s\t", mode, type,
 113                                find_unique_abbrev(sha1, abbrev));
 114         }
 115         write_name_quotedpfx(base + chomp_prefix, baselen - chomp_prefix,
 116                           pathname, stdout, line_termination);
 117         return retval;
 118 }
 119
 120 int cmd_ls_tree(int argc, const char **argv, const char *prefix)
 121 {
 122         unsigned char sha1[20];
 123         struct tree *tree;
 124         int i, full_tree = 0;
 125         const struct option ls_tree_options[] = {
 126                 OPT_BIT('d', NULL, &ls_options, N_("only show trees"),
 127                         LS_TREE_ONLY),
 128                 OPT_BIT('r', NULL, &ls_options, N_("recurse into subtrees"),
 129                         LS_RECURSIVE),
 130                 OPT_BIT('t', NULL, &ls_options, N_("show trees when recursing"),
 131                         LS_SHOW_TREES),
 132                 OPT_SET_INT('z', NULL, &line_termination,
 133                             N_("terminate entries with NUL byte"), 0),
 134                 OPT_BIT('l', "long", &ls_options, N_("include object size"),
 135                         LS_SHOW_SIZE),
 136                 OPT_BIT(0, "name-only", &ls_options, N_("list only filenames"),
 137                         LS_NAME_ONLY),
 138                 OPT_BIT(0, "name-status", &ls_options, N_("list only filenames"),
 139                         LS_NAME_ONLY),
 140                 OPT_SET_INT(0, "full-name", &chomp_prefix,
 141                             N_("use full path names"), 0),
 142                 OPT_BOOLEAN(0, "full-tree", &full_tree,
 143                             N_("list entire tree; not just current directory "
 144                                "(implies --full-name)")),
 145                 OPT__ABBREV(&abbrev),
 146                 OPT_END()
 147         };
 148
 149         git_config(git_default_config, NULL);
 150         ls_tree_prefix = prefix;
 151         if (prefix && *prefix)
 152                 chomp_prefix = strlen(prefix);
 153
 154         argc = parse_options(argc, argv, prefix, ls_tree_options,
 155                              ls_tree_usage, 0);
 156         if (full_tree) {
 157                 ls_tree_prefix = prefix = NULL;
 158                 chomp_prefix = 0;
 159         }
 160         /* -d -r should imply -t, but -d by itself should not have to. */
 161         if ( (LS_TREE_ONLY|LS_RECURSIVE) ==
 162             ((LS_TREE_ONLY|LS_RECURSIVE) & ls_options))
 163                 ls_options |= LS_SHOW_TREES;
 164
 165         if (argc < 1)
 166                 usage_with_options(ls_tree_usage, ls_tree_options);
 167         if (get_sha1(argv[0], sha1))
 168                 die("Not a valid object name %s", argv[0]);
 169
 170         /*
 171          * show_recursive() rolls its own matching code and is
 172          * generally ignorant of 'struct pathspec'. The magic mask
 173          * cannot be lifted until it is converted to use
 174          * match_pathspec_depth() or tree_entry_interesting()
 175          */
 176         parse_pathspec(&pathspec, 0,
 177                        PATHSPEC_PREFER_CWD,
 178                        prefix, argv + 1);
 179         for (i = 0; i < pathspec.nr; i++)
 180                 pathspec.items[i].nowildcard_len = pathspec.items[i].len;
 181         pathspec.has_wildcard = 0;
 182         tree = parse_tree_indirect(sha1);
 183         if (!tree)
 184                 die("not a tree object");
 185         return !!read_tree_recursive(tree, "", 0, 0, &pathspec, show_tree, NULL);
 186 }