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|
/*
+----------------------------------------------------------------------+
| PHP Version 4 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2003 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. |
+----------------------------------------------------------------------+
| Author: 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))
/* {{{ php_canonicalize_version() */
PHPAPI char *
php_canonicalize_version(const char *version)
{
int len = strlen(version);
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 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 != '.') {
lq = *q++ = '.';
}
} else if ((isndig(lp) && isdig(*p)) || (isdig(lp) && isndig(*p))) {
if (lq != '.') {
*q++ = '.';
}
lq = *q++ = *p;
} else if (!isalnum(*p)) {
if (lq != '.') {
lq = *q++ = '.';
}
} else {
lq = *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[9] = {
{"dev", 0},
{"alpha", 1},
{"a", 1},
{"beta", 2},
{"b", 2},
{"RC", 3},
{"#", 4},
{"pl", 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;
}
/* }}} */
/* {{{ do_version_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;
int v1_len, v2_len, op_len;
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:
*/
|
