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