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
|
/*
* GIT - The information manager from hell
*
* Copyright (C) Linus Torvalds, 2005
*/
#include "cache.h"
#include "commit.h"
#include "tree.h"
#include "builtin.h"
#include "utf8.h"
#define BLOCKING (1ul << 14)
/*
* FIXME! Share the code with "write-tree.c"
*/
static void check_valid(unsigned char *sha1, enum object_type expect)
{
enum object_type type = sha1_object_info(sha1, NULL);
if (type < 0)
die("%s is not a valid object", sha1_to_hex(sha1));
if (type != expect)
die("%s is not a valid '%s' object", sha1_to_hex(sha1),
typename(expect));
}
static const char commit_tree_usage[] = "git commit-tree <sha1> [-p <sha1>]* < changelog";
static void new_parent(struct commit *parent, struct commit_list **parents_p)
{
unsigned char *sha1 = parent->object.sha1;
struct commit_list *parents;
for (parents = *parents_p; parents; parents = parents->next) {
if (parents->item == parent) {
error("duplicate parent %s ignored", sha1_to_hex(sha1));
return;
}
parents_p = &parents->next;
}
commit_list_insert(parent, parents_p);
}
static const char commit_utf8_warn[] =
"Warning: commit message does not conform to UTF-8.\n"
"You may want to amend it after fixing the message, or set the config\n"
"variable i18n.commitencoding to the encoding your project uses.\n";
int commit_tree(const char *msg, unsigned char *tree,
struct commit_list *parents, unsigned char *ret,
const char *author)
{
int result;
int encoding_is_utf8;
struct strbuf buffer;
check_valid(tree, OBJ_TREE);
/* Not having i18n.commitencoding is the same as having utf-8 */
encoding_is_utf8 = is_encoding_utf8(git_commit_encoding);
strbuf_init(&buffer, 8192); /* should avoid reallocs for the headers */
strbuf_addf(&buffer, "tree %s\n", sha1_to_hex(tree));
/*
* NOTE! This ordering means that the same exact tree merged with a
* different order of parents will be a _different_ changeset even
* if everything else stays the same.
*/
while (parents) {
struct commit_list *next = parents->next;
strbuf_addf(&buffer, "parent %s\n",
sha1_to_hex(parents->item->object.sha1));
free(parents);
parents = next;
}
/* Person/date information */
if (!author)
author = git_author_info(IDENT_ERROR_ON_NO_NAME);
strbuf_addf(&buffer, "author %s\n", author);
strbuf_addf(&buffer, "committer %s\n", git_committer_info(IDENT_ERROR_ON_NO_NAME));
if (!encoding_is_utf8)
strbuf_addf(&buffer, "encoding %s\n", git_commit_encoding);
strbuf_addch(&buffer, '\n');
/* And add the comment */
strbuf_addstr(&buffer, msg);
/* And check the encoding */
if (encoding_is_utf8 && !is_utf8(buffer.buf))
fprintf(stderr, commit_utf8_warn);
result = write_sha1_file(buffer.buf, buffer.len, commit_type, ret);
strbuf_release(&buffer);
return result;
}
int cmd_commit_tree(int argc, const char **argv, const char *prefix)
{
int i;
struct commit_list *parents = NULL;
unsigned char tree_sha1[20];
unsigned char commit_sha1[20];
struct strbuf buffer = STRBUF_INIT;
git_config(git_default_config, NULL);
if (argc < 2)
usage(commit_tree_usage);
if (get_sha1(argv[1], tree_sha1))
die("Not a valid object name %s", argv[1]);
for (i = 2; i < argc; i += 2) {
unsigned char sha1[20];
const char *a, *b;
a = argv[i]; b = argv[i+1];
if (!b || strcmp(a, "-p"))
usage(commit_tree_usage);
if (get_sha1(b, sha1))
die("Not a valid object name %s", b);
check_valid(sha1, OBJ_COMMIT);
new_parent(lookup_commit(sha1), &parents);
}
if (strbuf_read(&buffer, 0, 0) < 0)
die("git commit-tree: read returned %s", strerror(errno));
if (!commit_tree(buffer.buf, tree_sha1, parents, commit_sha1, NULL)) {
printf("%s\n", sha1_to_hex(commit_sha1));
return 0;
}
else
return 1;
}
|
