git/tree.c at master · git/git

Cannot retrieve contributors at this time

157 lines (136 sloc) 3.66 KB

Raw Blame

	#include "cache.h"
	#include "cache-tree.h"
	#include "tree.h"
	#include "object-store.h"
	#include "blob.h"
	#include "commit.h"
	#include "tag.h"
	#include "alloc.h"
	#include "tree-walk.h"
	#include "repository.h"

	const char *tree_type = "tree";

	int read_tree_at(struct repository *r,
	struct tree tree, struct strbuf base,
	const struct pathspec *pathspec,
	read_tree_fn_t fn, void *context)
	{
	struct tree_desc desc;
	struct name_entry entry;
	struct object_id oid;
	int len, oldlen = base->len;
	enum interesting retval = entry_not_interesting;

	if (parse_tree(tree))
	return -1;

	init_tree_desc(&desc, tree->buffer, tree->size);

	while (tree_entry(&desc, &entry)) {
	if (retval != all_entries_interesting) {
	retval = tree_entry_interesting(r->index, &entry,
	base, 0, pathspec);
	if (retval == all_entries_not_interesting)
	break;
	if (retval == entry_not_interesting)
	continue;
	}

	switch (fn(&entry.oid, base,
	entry.path, entry.mode, context)) {
	case 0:
	continue;
	case READ_TREE_RECURSIVE:
	break;
	default:
	return -1;
	}

	if (S_ISDIR(entry.mode))
	oidcpy(&oid, &entry.oid);
	else if (S_ISGITLINK(entry.mode)) {
	struct commit *commit;

	commit = lookup_commit(r, &entry.oid);
	if (!commit)
	die("Commit %s in submodule path %s%s not found",
	oid_to_hex(&entry.oid),
	base->buf, entry.path);

	if (parse_commit(commit))
	die("Invalid commit %s in submodule path %s%s",
	oid_to_hex(&entry.oid),
	base->buf, entry.path);

	oidcpy(&oid, get_commit_tree_oid(commit));
	}
	else
	continue;

	len = tree_entry_len(&entry);
	strbuf_add(base, entry.path, len);
	strbuf_addch(base, '/');
	retval = read_tree_at(r, lookup_tree(r, &oid),
	base, pathspec,
	fn, context);
	strbuf_setlen(base, oldlen);
	if (retval)
	return -1;
	}
	return 0;
	}

	int read_tree(struct repository *r,
	struct tree *tree,
	const struct pathspec *pathspec,
	read_tree_fn_t fn, void *context)
	{
	struct strbuf sb = STRBUF_INIT;
	int ret = read_tree_at(r, tree, &sb, pathspec, fn, context);
	strbuf_release(&sb);
	return ret;
	}

	int cmp_cache_name_compare(const void a_, const void b_)
	{
	const struct cache_entry ce1, ce2;

	ce1 = ((const struct cache_entry *)a_);
	ce2 = ((const struct cache_entry *)b_);
	return cache_name_stage_compare(ce1->name, ce1->ce_namelen, ce_stage(ce1),
	ce2->name, ce2->ce_namelen, ce_stage(ce2));
	}

	struct tree lookup_tree(struct repository r, const struct object_id *oid)
	{
	struct object *obj = lookup_object(r, oid);
	if (!obj)
	return create_object(r, oid, alloc_tree_node(r));
	return object_as_type(obj, OBJ_TREE, 0);
	}

	int parse_tree_buffer(struct tree item, void buffer, unsigned long size)
	{
	if (item->object.parsed)
	return 0;
	item->object.parsed = 1;
	item->buffer = buffer;
	item->size = size;

	return 0;
	}

	int parse_tree_gently(struct tree *item, int quiet_on_missing)
	{
	enum object_type type;
	void *buffer;
	unsigned long size;

	if (item->object.parsed)
	return 0;
	buffer = read_object_file(&item->object.oid, &type, &size);
	if (!buffer)
	return quiet_on_missing ? -1 :
	error("Could not read %s",
	oid_to_hex(&item->object.oid));
	if (type != OBJ_TREE) {
	free(buffer);
	return error("Object %s not a tree",
	oid_to_hex(&item->object.oid));
	}
	return parse_tree_buffer(item, buffer, size);
	}

	void free_tree_buffer(struct tree *tree)
	{
	FREE_AND_NULL(tree->buffer);
	tree->size = 0;
	tree->object.parsed = 0;
	}

	struct tree parse_tree_indirect(const struct object_id oid)
	{
	struct repository *r = the_repository;
	struct object *obj = parse_object(r, oid);
	return (struct tree *)repo_peel_to_type(r, NULL, 0, obj, OBJ_TREE);
	}

git / git Public

git/tree.c