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        int i;
  35
  36        if (ls_options & LS_RECURSIVE)
  37                return 1;
  38
  39        if (!pathspec.nr)
  40                return 0;
  41
  42        for (i = 0; i < pathspec.nr; i++) {
  43                const char *spec = pathspec.items[i].match;
  44                int len, speclen;
  45
  46                if (strncmp(base, spec, baselen))
  47                        continue;
  48                len = strlen(pathname);
  49                spec += baselen;
  50                speclen = strlen(spec);
  51                if (speclen <= len)
  52                        continue;
  53                if (spec[len] && spec[len] != '/')
  54                        continue;
  55                if (memcmp(pathname, spec, len))
  56                        continue;
  57                return 1;
  58        }
  59        return 0;
  60}
  61
  62static int show_tree(const unsigned char *sha1, struct strbuf *base,
  63                const char *pathname, unsigned mode, int stage, void *context)
  64{
  65        int retval = 0;
  66        int baselen;
  67        const char *type = blob_type;
  68
  69        if (S_ISGITLINK(mode)) {
  70                /*
  71                 * Maybe we want to have some recursive version here?
  72                 *
  73                 * Something similar to this incomplete example:
  74                 *
  75                if (show_subprojects(base, baselen, pathname))
  76                        retval = READ_TREE_RECURSIVE;
  77                 *
  78                 */
  79                type = commit_type;
  80        } else if (S_ISDIR(mode)) {
  81                if (show_recursive(base->buf, base->len, pathname)) {
  82                        retval = READ_TREE_RECURSIVE;
  83                        if (!(ls_options & LS_SHOW_TREES))
  84                                return retval;
  85                }
  86                type = tree_type;
  87        }
  88        else if (ls_options & LS_TREE_ONLY)
  89                return 0;
  90
  91        if (!(ls_options & LS_NAME_ONLY)) {
  92                if (ls_options & LS_SHOW_SIZE) {
  93                        char size_text[24];
  94                        if (!strcmp(type, blob_type)) {
  95                                unsigned long size;
  96                                if (sha1_object_info(sha1, &size) == OBJ_BAD)
  97                                        xsnprintf(size_text, sizeof(size_text),
  98                                                  "BAD");
  99                                else
 100                                        xsnprintf(size_text, sizeof(size_text),
 101                                                  "%lu", size);
 102                        } else
 103                                xsnprintf(size_text, sizeof(size_text), "-");
 104                        printf("%06o %s %s %7s\t", mode, type,
 105                               find_unique_abbrev(sha1, abbrev),
 106                               size_text);
 107                } else
 108                        printf("%06o %s %s\t", mode, type,
 109                               find_unique_abbrev(sha1, abbrev));
 110        }
 111        baselen = base->len;
 112        strbuf_addstr(base, pathname);
 113        write_name_quoted_relative(base->buf,
 114                                   chomp_prefix ? ls_tree_prefix : NULL,
 115                                   stdout, line_termination);
 116        strbuf_setlen(base, baselen);
 117        return retval;
 118}
 119
 120int 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_BOOL(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() or tree_entry_interesting()
 175         */
 176        parse_pathspec(&pathspec, PATHSPEC_ALL_MAGIC &
 177                                  ~(PATHSPEC_FROMTOP | PATHSPEC_LITERAL),
 178                       PATHSPEC_PREFER_CWD,
 179                       prefix, argv + 1);
 180        for (i = 0; i < pathspec.nr; i++)
 181                pathspec.items[i].nowildcard_len = pathspec.items[i].len;
 182        pathspec.has_wildcard = 0;
 183        tree = parse_tree_indirect(sha1);
 184        if (!tree)
 185                die("not a tree object");
 186        return !!read_tree_recursive(tree, "", 0, 0, &pathspec, show_tree, NULL);
 187}