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|
/*
+----------------------------------------------------------------------+
| PHP version 4.0 |
+----------------------------------------------------------------------+
| Copyright (c) 1997, 1998, 1999, 2000, 2001 The PHP Group |
+----------------------------------------------------------------------+
| This source file is subject to version 2.02 of the PHP license, |
| that is bundled with this package in the file LICENSE, and is |
| available at through the world-wide-web at |
| http://www.php.net/license/2_02.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. |
+----------------------------------------------------------------------+
| Authors: Stig Sæther Bakken <ssb@fast.no> |
| |
+----------------------------------------------------------------------+
*/
/* $Id$ */
#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))
#define PHP_VC_COMPARE 0
#define PHP_VC_LT 1
#define PHP_VC_LE 2
#define PHP_VC_GT 3
#define PHP_VC_GE 4
#define PHP_VC_EQ 5
#define PHP_VCFUNC(name,mode) \
void name(INTERNAL_FUNCTION_PARAMETERS) { \
do_version_compare(INTERNAL_FUNCTION_PARAM_PASSTHRU, mode); \
}
/* {{{ php_canonicalize_version() */
PHPAPI char *
php_canonicalize_version(const char *version)
{
int len = strlen(version), in_number = 0;
char *buf = emalloc(len * 2 + 1), *q, lp, lq;
const char *p;
if (len == 0) {
*buf = '\0';
return buf;
}
p = version;
q = buf;
*q++ = lp = *p++;
lq = '\0';
while (*p) {
/* s/[-_+]/./g;
* s/([^\d\.])([^\D\.])/$1.$2/g;
* s/([^\D\.])([^\d\.])/$1.$2/g;
*/
#define isdigdot(x) (isdigit(x)||(x)=='.')
#define isspecialver(x) ((x)=='-'||(x)=='_'||(x)=='+')
lq = *(q - 1);
if ((isdigdot(*p) != isdigdot(lp) || isspecialver(*p)) &&
(lq != '.' && *p != '.')) {
lq = *q;
*q++ = '.';
}
*q++ = lp = *p++;
}
*q++ = '\0';
return buf;
}
/* }}} */
/* {{{ compare_special_version_forms() */
static int
compare_special_version_forms(const char *form1, const char *form2)
{
int i, found1 = -1, found2 = -1;
char **pp;
static char *special_forms[] = {
"dev",
"a",
"b",
"RC",
"#N#",
"pl",
NULL
};
for (pp = special_forms, i = 0; *pp != NULL; pp++, i++) {
if (strncmp(form1, *pp, strlen(*pp)) == 0) {
found1 = i;
break;
}
}
for (pp = special_forms, i = 0; *pp != NULL; pp++, i++) {
if (strncmp(form2, *pp, strlen(*pp)) == 0) {
found2 = i;
break;
}
}
return sign(found1 - found2);
}
/* }}} */
/* {{{ php_version_compare() */
PHPAPI int
php_version_compare(const char *orig_ver1, const char *orig_ver2)
{
char *ver1 = php_canonicalize_version(orig_ver1);
char *ver2 = php_canonicalize_version(orig_ver2);
char *p1, *p2, *n1, *n2;
long l1, l2;
int compare = 0;
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;
}
/* }}} */
/* {{{ do_version_compare() */
void do_version_compare(INTERNAL_FUNCTION_PARAMETERS, int mode)
{
zval **v1, **v2;
int compare, argc;
argc = ZEND_NUM_ARGS();
if (argc != 2 || zend_get_parameters_ex(argc, &v1, &v2) == FAILURE) {
WRONG_PARAM_COUNT;
}
convert_to_string_ex(v1);
convert_to_string_ex(v2);
compare = php_version_compare(Z_STRVAL_PP(v1), Z_STRVAL_PP(v2));
switch (mode) {
case PHP_VC_LT:
RETURN_LONG(compare == -1);
case PHP_VC_LE:
RETURN_LONG(compare != 1);
case PHP_VC_GT:
RETURN_LONG(compare == 1);
case PHP_VC_GE:
RETURN_LONG(compare != -1);
case PHP_VC_EQ:
RETURN_LONG(compare == 0);
case PHP_VC_COMPARE:
default:
RETURN_LONG(compare);
}
}
/* }}} */
/* {{{ proto int version_compare(string ver1, string ver2) */
PHP_VCFUNC(PHP_FN(version_compare), PHP_VC_COMPARE);
/* }}} */
/* {{{ proto int version_lt(string ver1, string ver2) */
PHP_VCFUNC(PHP_FN(version_lt), PHP_VC_LT);
/* }}} */
/* {{{ proto int version_lt(string ver1, string ver2) */
PHP_VCFUNC(PHP_FN(version_le), PHP_VC_LE);
/* }}} */
/* {{{ proto int version_gt(string ver1, string ver2) */
PHP_VCFUNC(PHP_FN(version_gt), PHP_VC_GT);
/* }}} */
/* {{{ proto int version_ge(string ver1, string ver2) */
PHP_VCFUNC(PHP_FN(version_ge), PHP_VC_GE);
/* }}} */
/* {{{ proto int version_eq(string ver1, string ver2) */
PHP_VCFUNC(PHP_FN(version_eq), PHP_VC_EQ);
/* }}} */
/*
* Local variables:
* tab-width: 4
* c-basic-offset: 4
* indent-tabs-mode: t
* End:
*/
|
