Andrew's git - gitweb.git/blob

   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
  15static 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
  21static int abbrev;
  22static int ls_options;
  23static struct pathspec pathspec;
  24static int chomp_prefix;
  25static const char *ls_tree_prefix;
  26
  27static const  char * const ls_tree_usage[] = {
  28        N_("git ls-tree [<options>] <tree-ish> [<path>...]"),
  29        NULL
  30};
  31
  32static 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
  64static int show_tree(const unsigned char *sha1, struct strbuf *base,
  65                const char *pathname, unsigned mode, int stage, void *context)
  66{
  67        int retval = 0;
  68        int baselen;
  69        const char *type = blob_type;
  70
  71        if (S_ISGITLINK(mode)) {
  72                /*
  73                 * Maybe we want to have some recursive version here?
  74                 *
  75                 * Something similar to this incomplete example:
  76                 *
  77                if (show_subprojects(base, baselen, pathname))
  78                        retval = READ_TREE_RECURSIVE;
  79                 *
  80                 */
  81                type = commit_type;
  82        } else if (S_ISDIR(mode)) {
  83                if (show_recursive(base->buf, base->len, pathname)) {
  84                        retval = READ_TREE_RECURSIVE;
  85                        if (!(ls_options & LS_SHOW_TREES))
  86                                return retval;
  87                }
  88                type = tree_type;
  89        }
  90        else if (ls_options & LS_TREE_ONLY)
  91                return 0;
  92
  93        if (!(ls_options & LS_NAME_ONLY)) {
  94                if (ls_options & LS_SHOW_SIZE) {
  95                        char size_text[24];
  96                        if (!strcmp(type, blob_type)) {
  97                                unsigned long size;
  98                                if (sha1_object_info(sha1, &size) == OBJ_BAD)
  99                                        xsnprintf(size_text, sizeof(size_text),
 100                                                  "BAD");
 101                                else
 102                                        xsnprintf(size_text, sizeof(size_text),
 103                                                  "%lu", size);
 104                        } else
 105                                xsnprintf(size_text, sizeof(size_text), "-");
 106                        printf("%06o %s %s %7s\t", mode, type,
 107                               find_unique_abbrev(sha1, abbrev),
 108                               size_text);
 109                } else
 110                        printf("%06o %s %s\t", mode, type,
 111                               find_unique_abbrev(sha1, abbrev));
 112        }
 113        baselen = base->len;
 114        strbuf_addstr(base, pathname);
 115        write_name_quoted_relative(base->buf,
 116                                   chomp_prefix ? ls_tree_prefix : NULL,
 117                                   stdout, line_termination);
 118        strbuf_setlen(base, baselen);
 119        return retval;
 120}
 121
 122int cmd_ls_tree(int argc, const char **argv, const char *prefix)
 123{
 124        unsigned char sha1[20];
 125        struct tree *tree;
 126        int i, full_tree = 0;
 127        const struct option ls_tree_options[] = {
 128                OPT_BIT('d', NULL, &ls_options, N_("only show trees"),
 129                        LS_TREE_ONLY),
 130                OPT_BIT('r', NULL, &ls_options, N_("recurse into subtrees"),
 131                        LS_RECURSIVE),
 132                OPT_BIT('t', NULL, &ls_options, N_("show trees when recursing"),
 133                        LS_SHOW_TREES),
 134                OPT_SET_INT('z', NULL, &line_termination,
 135                            N_("terminate entries with NUL byte"), 0),
 136                OPT_BIT('l', "long", &ls_options, N_("include object size"),
 137                        LS_SHOW_SIZE),
 138                OPT_BIT(0, "name-only", &ls_options, N_("list only filenames"),
 139                        LS_NAME_ONLY),
 140                OPT_BIT(0, "name-status", &ls_options, N_("list only filenames"),
 141                        LS_NAME_ONLY),
 142                OPT_SET_INT(0, "full-name", &chomp_prefix,
 143                            N_("use full path names"), 0),
 144                OPT_BOOL(0, "full-tree", &full_tree,
 145                         N_("list entire tree; not just current directory "
 146                            "(implies --full-name)")),
 147                OPT__ABBREV(&abbrev),
 148                OPT_END()
 149        };
 150
 151        git_config(git_default_config, NULL);
 152        ls_tree_prefix = prefix;
 153        if (prefix && *prefix)
 154                chomp_prefix = strlen(prefix);
 155
 156        argc = parse_options(argc, argv, prefix, ls_tree_options,
 157                             ls_tree_usage, 0);
 158        if (full_tree) {
 159                ls_tree_prefix = prefix = NULL;
 160                chomp_prefix = 0;
 161        }
 162        /* -d -r should imply -t, but -d by itself should not have to. */
 163        if ( (LS_TREE_ONLY|LS_RECURSIVE) ==
 164            ((LS_TREE_ONLY|LS_RECURSIVE) & ls_options))
 165                ls_options |= LS_SHOW_TREES;
 166
 167        if (argc < 1)
 168                usage_with_options(ls_tree_usage, ls_tree_options);
 169        if (get_sha1(argv[0], sha1))
 170                die("Not a valid object name %s", argv[0]);
 171
 172        /*
 173         * show_recursive() rolls its own matching code and is
 174         * generally ignorant of 'struct pathspec'. The magic mask
 175         * cannot be lifted until it is converted to use
 176         * match_pathspec() or tree_entry_interesting()
 177         */
 178        parse_pathspec(&pathspec, PATHSPEC_GLOB | PATHSPEC_ICASE |
 179                                  PATHSPEC_EXCLUDE,
 180                       PATHSPEC_PREFER_CWD,
 181                       prefix, argv + 1);
 182        for (i = 0; i < pathspec.nr; i++)
 183                pathspec.items[i].nowildcard_len = pathspec.items[i].len;
 184        pathspec.has_wildcard = 0;
 185        tree = parse_tree_indirect(sha1);
 186        if (!tree)
 187                die("not a tree object");
 188        return !!read_tree_recursive(tree, "", 0, 0, &pathspec, show_tree, NULL);
 189}