mirror of
https://git.proxmox.com/git/libgit2
synced 2025-05-09 07:20:07 +00:00
153 lines
3.2 KiB
C
153 lines
3.2 KiB
C
/*
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* Copyright (C) 2009-2012 the libgit2 contributors
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*
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* This file is part of libgit2, distributed under the GNU GPL v2 with
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* a Linking Exception. For full terms see the included COPYING file.
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*/
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#include <assert.h>
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#include "git2/checkout.h"
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#include "git2/repository.h"
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#include "git2/refs.h"
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#include "git2/tree.h"
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#include "git2/commit.h"
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#include "git2/blob.h"
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#include "common.h"
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#include "refs.h"
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#include "buffer.h"
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#include "repository.h"
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#include "filter.h"
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GIT_BEGIN_DECL
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typedef struct tree_walk_data
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{
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git_indexer_stats *stats;
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git_repository *repo;
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} tree_walk_data;
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static int apply_filters(git_buf *out,
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git_vector *filters,
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const void *data,
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size_t len)
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{
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int retcode = GIT_ERROR;
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git_buf_clear(out);
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if (!filters->length) {
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/* No filters to apply; just copy the result */
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git_buf_put(out, data, len);
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return 0;
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}
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git_buf origblob = GIT_BUF_INIT;
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git_buf_attach(&origblob, (char*)data, len);
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retcode = git_filters_apply(out, &origblob, filters);
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git_buf_detach(&origblob);
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return retcode;
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}
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static int blob_contents_to_file(git_repository *repo, git_buf *fnbuf, const git_oid *id, int mode)
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{
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int retcode = GIT_ERROR;
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git_blob *blob;
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if (!git_blob_lookup(&blob, repo, id)) {
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const void *contents = git_blob_rawcontent(blob);
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size_t len = git_blob_rawsize(blob);
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git_vector filters = GIT_VECTOR_INIT;
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int filter_count;
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/* TODO: line-ending smudging */
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filter_count = git_filters_load(&filters, repo,
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git_buf_cstr(fnbuf),
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GIT_FILTER_TO_WORKTREE);
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if (filter_count >= 0) {
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git_buf filteredblob = GIT_BUF_INIT;
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if (!apply_filters(&filteredblob, &filters, contents, len)) {
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int fd = git_futils_creat_withpath(git_buf_cstr(fnbuf),
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GIT_DIR_MODE, mode);
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if (fd >= 0) {
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retcode = (!p_write(fd, contents, len)) ? 0 : GIT_ERROR;
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p_close(fd);
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}
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}
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git_buf_free(&filteredblob);
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git_filters_free(&filters);
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}
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git_blob_free(blob);
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}
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return retcode;
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}
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static int checkout_walker(const char *path, git_tree_entry *entry, void *payload)
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{
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int retcode = 0;
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tree_walk_data *data = (tree_walk_data*)payload;
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int attr = git_tree_entry_attributes(entry);
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switch(git_tree_entry_type(entry)) {
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case GIT_OBJ_TREE:
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/* TODO: mkdir? */
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break;
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case GIT_OBJ_BLOB:
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{
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git_buf fnbuf = GIT_BUF_INIT;
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git_buf_join_n(&fnbuf, '/', 3,
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git_repository_workdir(data->repo),
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path,
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git_tree_entry_name(entry));
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retcode = blob_contents_to_file(data->repo, &fnbuf, git_tree_entry_id(entry), attr);
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git_buf_free(&fnbuf);
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}
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break;
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default:
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retcode = -1;
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break;
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}
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data->stats->processed++;
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return retcode;
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}
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int git_checkout_force(git_repository *repo, git_indexer_stats *stats)
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{
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int retcode = GIT_ERROR;
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git_indexer_stats dummy_stats;
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git_tree *tree;
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tree_walk_data payload;
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assert(repo);
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if (!stats) stats = &dummy_stats;
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stats->total = stats->processed = 0;
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payload.stats = stats;
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payload.repo = repo;
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/* TODO: stats->total is never calculated. */
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if (!git_repository_head_tree(&tree, repo)) {
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/* Checkout the files */
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if (!git_tree_walk(tree, checkout_walker, GIT_TREEWALK_POST, &payload)) {
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retcode = 0;
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}
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git_tree_free(tree);
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}
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return retcode;
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}
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GIT_END_DECL
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