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
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
|
/*
* 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 <assert.h>
#include "git2/checkout.h"
#include "git2/repository.h"
#include "git2/refs.h"
#include "git2/tree.h"
#include "git2/commit.h"
#include "git2/blob.h"
#include "git2/config.h"
#include "common.h"
#include "refs.h"
#include "buffer.h"
#include "repository.h"
#include "filter.h"
#include "blob.h"
GIT_BEGIN_DECL
typedef struct tree_walk_data
{
git_indexer_stats *stats;
git_repository *repo;
git_odb *odb;
bool do_symlinks;
} tree_walk_data;
static int blob_contents_to_link(tree_walk_data *data, git_buf *fnbuf,
const git_oid *id)
{
int retcode = GIT_ERROR;
git_blob *blob;
/* Get the link target */
if (!(retcode = git_blob_lookup(&blob, data->repo, id))) {
git_buf linktarget = GIT_BUF_INIT;
if (!(retcode = git_blob__getbuf(&linktarget, blob))) {
/* Create the link */
const char *new = git_buf_cstr(&linktarget),
*old = git_buf_cstr(fnbuf);
retcode = data->do_symlinks
? p_symlink(new, old)
: git_futils_fake_symlink(new, old);
}
git_buf_free(&linktarget);
git_blob_free(blob);
}
return retcode;
}
static int blob_contents_to_file(git_repository *repo, git_buf *fnbuf,
const git_oid *id, int mode)
{
int retcode = GIT_ERROR;
git_buf filteredcontents = GIT_BUF_INIT;
if (!git_filter_blob_contents(&filteredcontents, repo, id, git_buf_cstr(fnbuf))) {
int fd = git_futils_creat_withpath(git_buf_cstr(fnbuf),
GIT_DIR_MODE, mode);
if (fd >= 0) {
if (!p_write(fd, git_buf_cstr(&filteredcontents),
git_buf_len(&filteredcontents)))
retcode = 0;
else
retcode = GIT_ERROR;
p_close(fd);
}
}
git_buf_free(&filteredcontents);
return retcode;
}
static int checkout_walker(const char *path, const git_tree_entry *entry, void *payload)
{
int retcode = 0;
tree_walk_data *data = (tree_walk_data*)payload;
int attr = git_tree_entry_attributes(entry);
/* TODO: handle submodules */
switch(git_tree_entry_type(entry))
{
case GIT_OBJ_TREE:
/* Nothing to do; the blob handling creates necessary directories. */
break;
case GIT_OBJ_BLOB:
{
git_buf fnbuf = GIT_BUF_INIT;
git_buf_join_n(&fnbuf, '/', 3,
git_repository_workdir(data->repo),
path,
git_tree_entry_name(entry));
if (S_ISLNK(attr)) {
retcode = blob_contents_to_link(data, &fnbuf,
git_tree_entry_id(entry));
} else {
retcode = blob_contents_to_file(data->repo, &fnbuf,
git_tree_entry_id(entry), attr);
}
git_buf_free(&fnbuf);
}
break;
default:
retcode = -1;
break;
}
data->stats->processed++;
return retcode;
}
int git_checkout_force(git_repository *repo, git_indexer_stats *stats)
{
int retcode = GIT_ERROR;
git_indexer_stats dummy_stats;
git_tree *tree;
tree_walk_data payload;
git_config *cfg;
assert(repo);
if (!stats) stats = &dummy_stats;
if (git_repository_is_bare(repo)) {
giterr_set(GITERR_INVALID, "Checkout is not allowed for bare repositories");
return GIT_ERROR;
}
/* Determine if symlinks should be handled */
if (!git_repository_config(&cfg, repo)) {
int temp = true;
if (!git_config_get_bool(&temp, cfg, "core.symlinks")) {
payload.do_symlinks = !!temp;
}
git_config_free(cfg);
}
stats->total = stats->processed = 0;
payload.stats = stats;
payload.repo = repo;
if (git_repository_odb(&payload.odb, repo) < 0) return GIT_ERROR;
/* TODO: stats->total is never calculated. */
if (!git_repository_head_tree(&tree, repo)) {
/* Checkout the files */
if (!git_tree_walk(tree, checkout_walker, GIT_TREEWALK_POST, &payload)) {
retcode = 0;
}
git_tree_free(tree);
}
git_odb_free(payload.odb);
return retcode;
}
GIT_END_DECL
|
