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-rw-r--r--builtin-ls-tree.c195
1 files changed, 195 insertions, 0 deletions
diff --git a/builtin-ls-tree.c b/builtin-ls-tree.c
new file mode 100644
index 0000000..d25767a
--- /dev/null
+++ b/builtin-ls-tree.c
@@ -0,0 +1,195 @@
+/*
+ * GIT - The information manager from hell
+ *
+ * Copyright (C) Linus Torvalds, 2005
+ */
+#include "cache.h"
+#include "blob.h"
+#include "tree.h"
+#include "commit.h"
+#include "quote.h"
+#include "builtin.h"
+
+static int line_termination = '\n';
+#define LS_RECURSIVE 1
+#define LS_TREE_ONLY 2
+#define LS_SHOW_TREES 4
+#define LS_NAME_ONLY 8
+#define LS_SHOW_SIZE 16
+static int abbrev;
+static int ls_options;
+static const char **pathspec;
+static int chomp_prefix;
+static const char *ls_tree_prefix;
+
+static const char ls_tree_usage[] =
+ "git ls-tree [-d] [-r] [-t] [-l] [-z] [--name-only] [--name-status] [--full-name] [--abbrev[=<n>]] <tree-ish> [path...]";
+
+static int show_recursive(const char *base, int baselen, const char *pathname)
+{
+ const char **s;
+
+ if (ls_options & LS_RECURSIVE)
+ return 1;
+
+ s = pathspec;
+ if (!s)
+ return 0;
+
+ for (;;) {
+ const char *spec = *s++;
+ int len, speclen;
+
+ if (!spec)
+ return 0;
+ if (strncmp(base, spec, baselen))
+ continue;
+ len = strlen(pathname);
+ spec += baselen;
+ speclen = strlen(spec);
+ if (speclen <= len)
+ continue;
+ if (memcmp(pathname, spec, len))
+ continue;
+ return 1;
+ }
+}
+
+static int show_tree(const unsigned char *sha1, const char *base, int baselen,
+ const char *pathname, unsigned mode, int stage, void *context)
+{
+ int retval = 0;
+ const char *type = blob_type;
+ unsigned long size;
+
+ if (S_ISGITLINK(mode)) {
+ /*
+ * Maybe we want to have some recursive version here?
+ *
+ * Something like:
+ *
+ if (show_subprojects(base, baselen, pathname)) {
+ if (fork()) {
+ chdir(base);
+ exec ls-tree;
+ }
+ waitpid();
+ }
+ *
+ * ..or similar..
+ */
+ type = commit_type;
+ } else if (S_ISDIR(mode)) {
+ if (show_recursive(base, baselen, pathname)) {
+ retval = READ_TREE_RECURSIVE;
+ if (!(ls_options & LS_SHOW_TREES))
+ return retval;
+ }
+ type = tree_type;
+ }
+ else if (ls_options & LS_TREE_ONLY)
+ return 0;
+
+ if (chomp_prefix &&
+ (baselen < chomp_prefix || memcmp(ls_tree_prefix, base, chomp_prefix)))
+ return 0;
+
+ if (!(ls_options & LS_NAME_ONLY)) {
+ if (ls_options & LS_SHOW_SIZE) {
+ if (!strcmp(type, blob_type)) {
+ sha1_object_info(sha1, &size);
+ printf("%06o %s %s %7lu\t", mode, type,
+ abbrev ? find_unique_abbrev(sha1, abbrev)
+ : sha1_to_hex(sha1),
+ size);
+ } else
+ printf("%06o %s %s %7c\t", mode, type,
+ abbrev ? find_unique_abbrev(sha1, abbrev)
+ : sha1_to_hex(sha1),
+ '-');
+ } else
+ printf("%06o %s %s\t", mode, type,
+ abbrev ? find_unique_abbrev(sha1, abbrev)
+ : sha1_to_hex(sha1));
+ }
+ write_name_quotedpfx(base + chomp_prefix, baselen - chomp_prefix,
+ pathname, stdout, line_termination);
+ return retval;
+}
+
+int cmd_ls_tree(int argc, const char **argv, const char *prefix)
+{
+ unsigned char sha1[20];
+ struct tree *tree;
+
+ git_config(git_default_config, NULL);
+ ls_tree_prefix = prefix;
+ if (prefix && *prefix)
+ chomp_prefix = strlen(prefix);
+ while (1 < argc && argv[1][0] == '-') {
+ switch (argv[1][1]) {
+ case 'z':
+ line_termination = 0;
+ break;
+ case 'r':
+ ls_options |= LS_RECURSIVE;
+ break;
+ case 'd':
+ ls_options |= LS_TREE_ONLY;
+ break;
+ case 't':
+ ls_options |= LS_SHOW_TREES;
+ break;
+ case 'l':
+ ls_options |= LS_SHOW_SIZE;
+ break;
+ case '-':
+ if (!strcmp(argv[1]+2, "name-only") ||
+ !strcmp(argv[1]+2, "name-status")) {
+ ls_options |= LS_NAME_ONLY;
+ break;
+ }
+ if (!strcmp(argv[1]+2, "long")) {
+ ls_options |= LS_SHOW_SIZE;
+ break;
+ }
+ if (!strcmp(argv[1]+2, "full-name")) {
+ chomp_prefix = 0;
+ break;
+ }
+ if (!prefixcmp(argv[1]+2, "abbrev=")) {
+ abbrev = strtoul(argv[1]+9, NULL, 10);
+ if (abbrev && abbrev < MINIMUM_ABBREV)
+ abbrev = MINIMUM_ABBREV;
+ else if (abbrev > 40)
+ abbrev = 40;
+ break;
+ }
+ if (!strcmp(argv[1]+2, "abbrev")) {
+ abbrev = DEFAULT_ABBREV;
+ break;
+ }
+ /* otherwise fallthru */
+ default:
+ usage(ls_tree_usage);
+ }
+ argc--; argv++;
+ }
+ /* -d -r should imply -t, but -d by itself should not have to. */
+ if ( (LS_TREE_ONLY|LS_RECURSIVE) ==
+ ((LS_TREE_ONLY|LS_RECURSIVE) & ls_options))
+ ls_options |= LS_SHOW_TREES;
+
+ if (argc < 2)
+ usage(ls_tree_usage);
+ if (get_sha1(argv[1], sha1))
+ die("Not a valid object name %s", argv[1]);
+
+ pathspec = get_pathspec(prefix, argv + 2);
+ tree = parse_tree_indirect(sha1);
+ if (!tree)
+ die("not a tree object");
+ read_tree_recursive(tree, "", 0, 0, pathspec, show_tree, NULL);
+
+ return 0;
+}