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
|
/*
* GIT - the stupid content tracker
*
* Copyright (c) Junio C Hamano, 2006
*/
#include "cache.h"
#include "strbuf.h"
#include "quote.h"
static struct treeent {
unsigned mode;
unsigned char sha1[20];
int len;
char name[FLEX_ARRAY];
} **entries;
static int alloc, used;
static void append_to_tree(unsigned mode, unsigned char *sha1, char *path)
{
struct treeent *ent;
int len = strlen(path);
if (strchr(path, '/'))
die("path %s contains slash", path);
if (alloc <= used) {
alloc = alloc_nr(used);
entries = xrealloc(entries, sizeof(*entries) * alloc);
}
ent = entries[used++] = xmalloc(sizeof(**entries) + len + 1);
ent->mode = mode;
ent->len = len;
memcpy(ent->sha1, sha1, 20);
memcpy(ent->name, path, len+1);
}
static int ent_compare(const void *a_, const void *b_)
{
struct treeent *a = *(struct treeent **)a_;
struct treeent *b = *(struct treeent **)b_;
return base_name_compare(a->name, a->len, a->mode,
b->name, b->len, b->mode);
}
static void write_tree(unsigned char *sha1)
{
char *buffer;
unsigned long size, offset;
int i;
qsort(entries, used, sizeof(*entries), ent_compare);
size = 100;
for (size = i = 0; i < used; i++)
size += 32 + entries[i]->len;
buffer = xmalloc(size);
offset = 0;
for (i = 0; i < used; i++) {
struct treeent *ent = entries[i];
if (offset + ent->len + 100 < size) {
size = alloc_nr(offset + ent->len + 100);
buffer = xrealloc(buffer, size);
}
offset += sprintf(buffer + offset, "%o ", ent->mode);
offset += sprintf(buffer + offset, "%s", ent->name);
buffer[offset++] = 0;
memcpy(buffer + offset, ent->sha1, 20);
offset += 20;
}
write_sha1_file(buffer, offset, "tree", sha1);
}
static const char mktree_usage[] = "mktree [-z]";
int main(int ac, char **av)
{
struct strbuf sb;
unsigned char sha1[20];
int line_termination = '\n';
setup_git_directory();
while ((1 < ac) && av[1][0] == '-') {
char *arg = av[1];
if (!strcmp("-z", arg))
line_termination = 0;
else
usage(mktree_usage);
ac--;
av++;
}
strbuf_init(&sb);
while (1) {
int len;
char *ptr, *ntr;
unsigned mode;
char type[20];
char *path;
read_line(&sb, stdin, line_termination);
if (sb.eof)
break;
len = sb.len;
ptr = sb.buf;
/* Input is non-recursive ls-tree output format
* mode SP type SP sha1 TAB name
*/
mode = strtoul(ptr, &ntr, 8);
if (ptr == ntr || !ntr || *ntr != ' ')
die("input format error: %s", sb.buf);
ptr = ntr + 1; /* type */
ntr = strchr(ptr, ' ');
if (!ntr || sb.buf + len <= ntr + 41 ||
ntr[41] != '\t' ||
get_sha1_hex(ntr + 1, sha1))
die("input format error: %s", sb.buf);
if (sha1_object_info(sha1, type, NULL))
die("object %s unavailable", sha1_to_hex(sha1));
*ntr++ = 0; /* now at the beginning of SHA1 */
if (strcmp(ptr, type))
die("object type %s mismatch (%s)", ptr, type);
ntr += 41; /* at the beginning of name */
if (line_termination && ntr[0] == '"')
path = unquote_c_style(ntr, NULL);
else
path = ntr;
append_to_tree(mode, sha1, path);
if (path != ntr)
free(path);
}
write_tree(sha1);
puts(sha1_to_hex(sha1));
exit(0);
}
|
