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
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
|
/*
+----------------------------------------------------------------------+
| PHP Version 5 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2014 The PHP Group |
+----------------------------------------------------------------------+
| This source file is subject to version 3.01 of the PHP license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| http://www.php.net/license/3_01.txt |
| If you did not receive a copy of the PHP license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| license@php.net so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Author: Stig Sæther Bakken <ssb@php.net> |
+----------------------------------------------------------------------+
*/
/* $Id$ */
#include <stdio.h>
#include <sys/types.h>
#include <ctype.h>
#include <stdlib.h>
#include <string.h>
#include "php.h"
#include "php_versioning.h"
#define sign(n) ((n)<0?-1:((n)>0?1:0))
/* {{{ php_canonicalize_version() */
PHPAPI char *
php_canonicalize_version(const char *version)
{
int len = strlen(version);
char *buf = safe_emalloc(len, 2, 1), *q, lp, lq;
const char *p;
if (len == 0) {
*buf = '\0';
return buf;
}
p = version;
q = buf;
*q++ = lp = *p++;
while (*p) {
/* s/[-_+]/./g;
* s/([^\d\.])([^\D\.])/$1.$2/g;
* s/([^\D\.])([^\d\.])/$1.$2/g;
*/
#define isdig(x) (isdigit(x)&&(x)!='.')
#define isndig(x) (!isdigit(x)&&(x)!='.')
#define isspecialver(x) ((x)=='-'||(x)=='_'||(x)=='+')
lq = *(q - 1);
if (isspecialver(*p)) {
if (lq != '.') {
*q++ = '.';
}
} else if ((isndig(lp) && isdig(*p)) || (isdig(lp) && isndig(*p))) {
if (lq != '.') {
*q++ = '.';
}
*q++ = *p;
} else if (!isalnum(*p)) {
if (lq != '.') {
*q++ = '.';
}
} else {
*q++ = *p;
}
lp = *p++;
}
*q++ = '\0';
return buf;
}
/* }}} */
/* {{{ compare_special_version_forms() */
typedef struct {
const char *name;
int order;
} special_forms_t;
static int
compare_special_version_forms(char *form1, char *form2)
{
int found1 = -1, found2 = -1;
special_forms_t special_forms[11] = {
{"dev", 0},
{"alpha", 1},
{"a", 1},
{"beta", 2},
{"b", 2},
{"RC", 3},
{"rc", 3},
{"#", 4},
{"pl", 5},
{"p", 5},
{NULL, 0},
};
special_forms_t *pp;
for (pp = special_forms; pp && pp->name; pp++) {
if (strncmp(form1, pp->name, strlen(pp->name)) == 0) {
found1 = pp->order;
break;
}
}
for (pp = special_forms; pp && pp->name; pp++) {
if (strncmp(form2, pp->name, strlen(pp->name)) == 0) {
found2 = pp->order;
break;
}
}
return sign(found1 - found2);
}
/* }}} */
/* {{{ php_version_compare() */
PHPAPI int
php_version_compare(const char *orig_ver1, const char *orig_ver2)
{
char *ver1;
char *ver2;
char *p1, *p2, *n1, *n2;
long l1, l2;
int compare = 0;
if (!*orig_ver1 || !*orig_ver2) {
if (!*orig_ver1 && !*orig_ver2) {
return 0;
} else {
return *orig_ver1 ? 1 : -1;
}
}
if (orig_ver1[0] == '#') {
ver1 = estrdup(orig_ver1);
} else {
ver1 = php_canonicalize_version(orig_ver1);
}
if (orig_ver2[0] == '#') {
ver2 = estrdup(orig_ver2);
} else {
ver2 = php_canonicalize_version(orig_ver2);
}
p1 = n1 = ver1;
p2 = n2 = ver2;
while (*p1 && *p2 && n1 && n2) {
if ((n1 = strchr(p1, '.')) != NULL) {
*n1 = '\0';
}
if ((n2 = strchr(p2, '.')) != NULL) {
*n2 = '\0';
}
if (isdigit(*p1) && isdigit(*p2)) {
/* compare element numerically */
l1 = strtol(p1, NULL, 10);
l2 = strtol(p2, NULL, 10);
compare = sign(l1 - l2);
} else if (!isdigit(*p1) && !isdigit(*p2)) {
/* compare element names */
compare = compare_special_version_forms(p1, p2);
} else {
/* mix of names and numbers */
if (isdigit(*p1)) {
compare = compare_special_version_forms("#N#", p2);
} else {
compare = compare_special_version_forms(p1, "#N#");
}
}
if (compare != 0) {
break;
}
if (n1 != NULL) {
p1 = n1 + 1;
}
if (n2 != NULL) {
p2 = n2 + 1;
}
}
if (compare == 0) {
if (n1 != NULL) {
if (isdigit(*p1)) {
compare = 1;
} else {
compare = php_version_compare(p1, "#N#");
}
} else if (n2 != NULL) {
if (isdigit(*p2)) {
compare = -1;
} else {
compare = php_version_compare("#N#", p2);
}
}
}
efree(ver1);
efree(ver2);
return compare;
}
/* }}} */
/* {{{ proto int version_compare(string ver1, string ver2 [, string oper])
Compares two "PHP-standardized" version number strings */
PHP_FUNCTION(version_compare)
{
char *v1, *v2, *op = NULL;
int v1_len, v2_len, op_len = 0;
int compare, argc;
argc = ZEND_NUM_ARGS();
if (zend_parse_parameters(argc TSRMLS_CC, "ss|s", &v1, &v1_len, &v2,
&v2_len, &op, &op_len) == FAILURE) {
return;
}
compare = php_version_compare(v1, v2);
if (argc == 2) {
RETURN_LONG(compare);
}
if (!strncmp(op, "<", op_len) || !strncmp(op, "lt", op_len)) {
RETURN_BOOL(compare == -1);
}
if (!strncmp(op, "<=", op_len) || !strncmp(op, "le", op_len)) {
RETURN_BOOL(compare != 1);
}
if (!strncmp(op, ">", op_len) || !strncmp(op, "gt", op_len)) {
RETURN_BOOL(compare == 1);
}
if (!strncmp(op, ">=", op_len) || !strncmp(op, "ge", op_len)) {
RETURN_BOOL(compare != -1);
}
if (!strncmp(op, "==", op_len) || !strncmp(op, "=", op_len) || !strncmp(op, "eq", op_len)) {
RETURN_BOOL(compare == 0);
}
if (!strncmp(op, "!=", op_len) || !strncmp(op, "<>", op_len) || !strncmp(op, "ne", op_len)) {
RETURN_BOOL(compare != 0);
}
RETURN_NULL();
}
/* }}} */
/*
* Local variables:
* tab-width: 4
* c-basic-offset: 4
* indent-tabs-mode: t
* End:
*/
|
