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/*
* This file is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License, version 2,
* as published by the Free Software Foundation.
*
* In addition to the permissions in the GNU General Public License,
* the authors give you unlimited permission to link the compiled
* version of this file into combinations with other programs,
* and to distribute those combinations without any restriction
* coming from the use of this file. (The General Public License
* restrictions do apply in other respects; for example, they cover
* modification of the file, and distribution when not linked into
* a combined executable.)
*
* This file is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; see the file COPYING. If not, write to
* the Free Software Foundation, 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "common.h"
#include "commit.h"
#include "revwalk.h"
#include "tree.h"
#include "git/repository.h"
void git_tree__free(git_tree *tree)
{
size_t i;
for (i = 0; i < tree->entry_count; ++i)
free(tree->entries[i].filename);
free(tree->entries);
free(tree);
}
const git_oid *git_tree_id(git_tree *tree)
{
return &tree->object.id;
}
git_tree *git_tree_lookup(git_repository *repo, const git_oid *id)
{
return (git_tree *)git_repository_lookup(repo, id, GIT_OBJ_TREE);
}
unsigned int git_tree_entry_attributes(const git_tree_entry *entry)
{
return entry->attr;
}
const char *git_tree_entry_name(const git_tree_entry *entry)
{
return entry->filename;
}
const git_oid *git_tree_entry_id(const git_tree_entry *entry)
{
return &entry->oid;
}
git_repository_object *git_tree_entry_2object(const git_tree_entry *entry)
{
return git_repository_lookup(entry->owner->object.repo, &entry->oid, GIT_OBJ_ANY);
}
int entry_cmp(const void *key, const void *array_member)
{
const char *filename = (const char *)key;
const git_tree_entry *entry = (const git_tree_entry *)array_member;
return strcmp(filename, entry->filename);
}
const git_tree_entry *git_tree_entry_byname(git_tree *tree, const char *filename)
{
return bsearch(filename, tree->entries, tree->entry_count, sizeof(git_tree_entry), entry_cmp);
}
const git_tree_entry *git_tree_entry_byindex(git_tree *tree, int idx)
{
if (tree->entries == NULL)
return NULL;
return (idx >= 0 && idx < (int)tree->entry_count) ? &tree->entries[idx] : NULL;
}
size_t git_tree_entrycount(git_tree *tree)
{
return tree->entry_count;
}
int git_tree__parse(git_tree *tree)
{
static const size_t avg_entry_size = 40;
int error = 0;
char *buffer, *buffer_end;
size_t entries_size;
if (tree->entries != NULL)
return GIT_SUCCESS;
error = git_repository__dbo_open((git_repository_object *)tree);
if (error < 0)
return error;
buffer = tree->object.dbo.data;
buffer_end = buffer + tree->object.dbo.len;
tree->entry_count = 0;
entries_size = (tree->object.dbo.len / avg_entry_size) + 1;
tree->entries = git__malloc(entries_size * sizeof(git_tree_entry));
while (buffer < buffer_end) {
git_tree_entry *entry;
if (tree->entry_count >= entries_size) {
git_tree_entry *new_entries;
entries_size = entries_size * 2;
new_entries = git__malloc(entries_size * sizeof(git_tree_entry));
memcpy(new_entries, tree->entries, tree->entry_count * sizeof(git_tree_entry));
free(tree->entries);
tree->entries = new_entries;
}
entry = &tree->entries[tree->entry_count++];
entry->owner = tree;
entry->attr = strtol(buffer, &buffer, 8);
if (*buffer++ != ' ') {
error = GIT_EOBJCORRUPTED;
break;
}
entry->filename = git__strdup(buffer);
if (entry->filename == NULL) {
error = GIT_EOBJCORRUPTED;
}
buffer += strlen(entry->filename) + 1;
git_oid_mkraw(&entry->oid, (const unsigned char *)buffer);
buffer += GIT_OID_RAWSZ;
}
git_repository__dbo_close((git_repository_object *)tree);
return error;
}
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