1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
|
/*
* Copyright (C) 2009-2012 the libgit2 contributors
*
* This file is part of libgit2, distributed under the GNU GPL v2 with
* a Linking Exception. For full terms see the included COPYING file.
*/
#include "common.h"
#include "commit.h"
#include "tag.h"
#include "git2/reset.h"
#define ERROR_MSG "Cannot perform reset"
static int reset_error_invalid(const char *msg)
{
giterr_set(GITERR_INVALID, "%s - %s", ERROR_MSG, msg);
return -1;
}
int git_reset(
git_repository *repo,
git_object *target,
git_reset_type reset_type)
{
git_object *commit = NULL;
git_index *index = NULL;
git_tree *tree = NULL;
int error = -1;
assert(repo && target);
assert(reset_type == GIT_RESET_SOFT || reset_type == GIT_RESET_MIXED);
if (git_object_owner(target) != repo)
return reset_error_invalid("The given target does not belong to this repository.");
if (reset_type == GIT_RESET_MIXED && git_repository_is_bare(repo))
return reset_error_invalid("Mixed reset is not allowed in a bare repository.");
if (git_object_peel(&commit, target, GIT_OBJ_COMMIT) < 0) {
reset_error_invalid("The given target does not resolve to a commit");
goto cleanup;
}
//TODO: Check for unmerged entries
if (git_reference__update(repo, git_object_id(commit), GIT_HEAD_FILE) < 0)
goto cleanup;
if (reset_type == GIT_RESET_SOFT) {
error = 0;
goto cleanup;
}
if (git_commit_tree(&tree, (git_commit *)commit) < 0) {
giterr_set(GITERR_OBJECT, "%s - Failed to retrieve the commit tree.", ERROR_MSG);
goto cleanup;
}
if (git_repository_index(&index, repo) < 0) {
giterr_set(GITERR_OBJECT, "%s - Failed to retrieve the index.", ERROR_MSG);
goto cleanup;
}
if (git_index_read_tree(index, tree, NULL) < 0) {
giterr_set(GITERR_INDEX, "%s - Failed to update the index.", ERROR_MSG);
goto cleanup;
}
if (git_index_write(index) < 0) {
giterr_set(GITERR_INDEX, "%s - Failed to write the index.", ERROR_MSG);
goto cleanup;
}
error = 0;
cleanup:
git_object_free(commit);
git_index_free(index);
git_tree_free(tree);
return error;
}
|
