Hash :
d8e1d038
Author :
Date :
2011-05-06T12:47:21
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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 "git2/common.h"
#include "git2/object.h"
#include "git2/repository.h"
#include "git2/signature.h"
#include "common.h"
#include "odb.h"
#include "commit.h"
#include "signature.h"
#include <stdarg.h>
#define COMMIT_BASIC_PARSE 0x0
#define COMMIT_FULL_PARSE 0x1
#define COMMIT_PRINT(commit) {\
char oid[41]; oid[40] = 0;\
git_oid_fmt(oid, &commit->object.id);\
printf("Oid: %s | In degree: %d | Time: %u\n", oid, commit->in_degree, commit->commit_time);\
}
static void clear_parents(git_commit *commit)
{
unsigned int i;
for (i = 0; i < commit->parent_oids.length; ++i) {
git_oid *parent = git_vector_get(&commit->parent_oids, i);
free(parent);
}
git_vector_clear(&commit->parent_oids);
}
void git_commit__free(git_commit *commit)
{
clear_parents(commit);
git_vector_free(&commit->parent_oids);
git_signature_free(commit->author);
git_signature_free(commit->committer);
free(commit->message);
free(commit->message_short);
free(commit);
}
const git_oid *git_commit_id(git_commit *c)
{
return git_object_id((git_object *)c);
}
int git_commit_create_v(
git_oid *oid,
git_repository *repo,
const char *update_ref,
const git_signature *author,
const git_signature *committer,
const char *message,
const git_oid *tree_oid,
int parent_count,
...)
{
va_list ap;
int i, error;
const git_oid **oids;
oids = git__malloc(parent_count * sizeof(git_oid *));
va_start(ap, parent_count);
for (i = 0; i < parent_count; ++i)
oids[i] = va_arg(ap, const git_oid *);
va_end(ap);
error = git_commit_create(
oid, repo, update_ref, author, committer, message,
tree_oid, parent_count, oids);
free((void *)oids);
return error;
}
int git_commit_create_ov(
git_oid *oid,
git_repository *repo,
const char *update_ref,
const git_signature *author,
const git_signature *committer,
const char *message,
const git_tree *tree,
int parent_count,
...)
{
va_list ap;
int i, error;
const git_oid **oids;
oids = git__malloc(parent_count * sizeof(git_oid *));
va_start(ap, parent_count);
for (i = 0; i < parent_count; ++i)
oids[i] = git_object_id(va_arg(ap, const git_object *));
va_end(ap);
error = git_commit_create(
oid, repo, update_ref, author, committer, message,
git_object_id((git_object *)tree),
parent_count, oids);
free((void *)oids);
return error;
}
int git_commit_create_o(
git_oid *oid,
git_repository *repo,
const char *update_ref,
const git_signature *author,
const git_signature *committer,
const char *message,
const git_tree *tree,
int parent_count,
const git_commit *parents[])
{
int i, error;
const git_oid **oids;
oids = git__malloc(parent_count * sizeof(git_oid *));
for (i = 0; i < parent_count; ++i)
oids[i] = git_object_id((git_object *)parents[i]);
error = git_commit_create(
oid, repo, update_ref, author, committer, message,
git_object_id((git_object *)tree),
parent_count, oids);
free((void *)oids);
return error;
}
int git_commit_create(
git_oid *oid,
git_repository *repo,
const char *update_ref,
const git_signature *author,
const git_signature *committer,
const char *message,
const git_oid *tree_oid,
int parent_count,
const git_oid *parents[])
{
size_t final_size = 0;
int message_length, author_length, committer_length;
char *author_str, *committer_str;
int error, i;
git_odb_stream *stream;
message_length = strlen(message);
author_length = git_signature__write(&author_str, "author", author);
committer_length = git_signature__write(&committer_str, "committer", committer);
if (author_length < 0 || committer_length < 0)
return GIT_ENOMEM;
final_size += GIT_OID_LINE_LENGTH("tree");
final_size += GIT_OID_LINE_LENGTH("parent") * parent_count;
final_size += author_length;
final_size += committer_length;
final_size += 1 + message_length;
if ((error = git_odb_open_wstream(&stream, repo->db, final_size, GIT_OBJ_COMMIT)) < GIT_SUCCESS)
return error;
git__write_oid(stream, "tree", tree_oid);
for (i = 0; i < parent_count; ++i)
git__write_oid(stream, "parent", parents[i]);
stream->write(stream, author_str, author_length);
free(author_str);
stream->write(stream, committer_str, committer_length);
free(committer_str);
stream->write(stream, "\n", 1);
stream->write(stream, message, message_length);
error = stream->finalize_write(oid, stream);
stream->free(stream);
if (error == GIT_SUCCESS && update_ref != NULL) {
git_reference *head;
error = git_reference_lookup(&head, repo, update_ref);
if (error < GIT_SUCCESS)
return error;
error = git_reference_resolve(&head, head);
if (error < GIT_SUCCESS) {
if (error != GIT_ENOTFOUND)
return error;
/*
* The target of the reference was not found. This can happen
* just after a repository has been initialized (the master
* branch doesn't exist yet, as it doesn't have anything to
* point to) or after an orphan checkout, so if the target
* branch doesn't exist yet, create it and return.
*/
return git_reference_create_oid_f(&head, repo, git_reference_target(head), oid);
}
error = git_reference_set_oid(head, oid);
}
return error;
}
int commit_parse_buffer(git_commit *commit, const void *data, size_t len)
{
const char *buffer = (char *)data;
const char *buffer_end = (char *)data + len;
git_oid parent_oid;
int error;
git_vector_init(&commit->parent_oids, 4, NULL);
if ((error = git__parse_oid(&commit->tree_oid, &buffer, buffer_end, "tree ")) < GIT_SUCCESS)
return error;
/*
* TODO: commit grafts!
*/
while (git__parse_oid(&parent_oid, &buffer, buffer_end, "parent ") == GIT_SUCCESS) {
git_oid *new_oid;
new_oid = git__malloc(sizeof(git_oid));
git_oid_cpy(new_oid, &parent_oid);
if (git_vector_insert(&commit->parent_oids, new_oid) < GIT_SUCCESS)
return GIT_ENOMEM;
}
commit->author = git__malloc(sizeof(git_signature));
if ((error = git_signature__parse(commit->author, &buffer, buffer_end, "author ")) < GIT_SUCCESS)
return error;
/* Always parse the committer; we need the commit time */
commit->committer = git__malloc(sizeof(git_signature));
if ((error = git_signature__parse(commit->committer, &buffer, buffer_end, "committer ")) < GIT_SUCCESS)
return error;
/* parse commit message */
while (buffer <= buffer_end && *buffer == '\n')
buffer++;
if (buffer < buffer_end) {
const char *line_end;
size_t message_len;
/* Long message */
message_len = buffer_end - buffer;
commit->message = git__malloc(message_len + 1);
memcpy(commit->message, buffer, message_len);
commit->message[message_len] = 0;
/* Short message */
if((line_end = memchr(buffer, '\n', buffer_end - buffer)) == NULL)
line_end = buffer_end;
message_len = line_end - buffer;
commit->message_short = git__malloc(message_len + 1);
memcpy(commit->message_short, buffer, message_len);
commit->message_short[message_len] = 0;
}
return GIT_SUCCESS;
}
int git_commit__parse(git_commit *commit, git_odb_object *obj)
{
assert(commit);
return commit_parse_buffer(commit, obj->raw.data, obj->raw.len);
}
#define GIT_COMMIT_GETTER(_rvalue, _name, _return) \
_rvalue git_commit_##_name(git_commit *commit) \
{\
assert(commit); \
return _return; \
}
GIT_COMMIT_GETTER(const git_signature *, author, commit->author)
GIT_COMMIT_GETTER(const git_signature *, committer, commit->committer)
GIT_COMMIT_GETTER(const char *, message, commit->message)
GIT_COMMIT_GETTER(const char *, message_short, commit->message_short)
GIT_COMMIT_GETTER(git_time_t, time, commit->committer->when.time)
GIT_COMMIT_GETTER(int, time_offset, commit->committer->when.offset)
GIT_COMMIT_GETTER(unsigned int, parentcount, commit->parent_oids.length)
GIT_COMMIT_GETTER(const git_oid *, tree_oid, &commit->tree_oid);
int git_commit_tree(git_tree **tree_out, git_commit *commit)
{
assert(commit);
return git_tree_lookup(tree_out, commit->object.repo, &commit->tree_oid);
}
int git_commit_parent(git_commit **parent, git_commit *commit, unsigned int n)
{
git_oid *parent_oid;
assert(commit);
parent_oid = git_vector_get(&commit->parent_oids, n);
if (parent_oid == NULL)
return GIT_ENOTFOUND;
return git_commit_lookup(parent, commit->object.repo, parent_oid);
}
const git_oid *git_commit_parent_oid(git_commit *commit, unsigned int n)
{
assert(commit);
return git_vector_get(&commit->parent_oids, n);
}