mirrors/php-src
0
0
Fork 0
mirror of https://github.com/php/php-src.git synced 2024-11-26 11:23:47 +08:00
Code Issues Packages Projects Releases Wiki Activity
105be1513d
php-src/ext/standard/string.c
Andrei Zmievski 3b77fd37a9 TODO update and fix for C++ comments.
2000-04-27 14:41:18 +00:00

2538 lines
56 KiB
C
Raw Blame History

/*
+----------------------------------------------------------------------+
| PHP version 4.0 |
+----------------------------------------------------------------------+
| Copyright (c) 1997, 1998, 1999, 2000 The PHP Group |
+----------------------------------------------------------------------+
| This source file is subject to version 2.01 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_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. |
+----------------------------------------------------------------------+
| Authors: Rasmus Lerdorf <rasmus@lerdorf.on.ca> |
| Stig Sæther Bakken <ssb@fast.no> |
| Zeev Suraski <zeev@zend.com> |
+----------------------------------------------------------------------+
*/
/* $Id$ */
/* Synced with php 3.0 revision 1.193 1999-06-16 [ssb] */
#include <stdio.h>
#include "php.h"
#include "reg.h"
#include "php_string.h"
#include "php_variables.h"
#ifdef HAVE_LOCALE_H
# include <locale.h>
#endif
#include "zend_execute.h"
#include "php_globals.h"
#include "basic_functions.h"
int php_tag_find(char *tag, int len, char *set);
/* this is read-only, so it's ok */
static char hexconvtab[] = "0123456789abcdef";
static char *php_bin2hex(const unsigned char *old, const size_t oldlen, size_t *newlen)
{
unsigned char *result = NULL;
size_t i, j;
result = (char *) emalloc(oldlen * 2 * sizeof(char));
if(!result) {
return result;
}
for(i = j = 0; i < oldlen; i++) {
result[j++] = hexconvtab[old[i] >> 4];
result[j++] = hexconvtab[old[i] & 15];
}
if(newlen) *newlen = oldlen * 2 * sizeof(char);
return result;
}
/* {{{ proto string bin2hex(string data)
Converts the binary representation of data to hex */
PHP_FUNCTION(bin2hex)
{
zval **data;
char *result;
size_t newlen;
if(ARG_COUNT(ht) != 1 || zend_get_parameters_ex(1, &data) == FAILURE) {
WRONG_PARAM_COUNT;
}
convert_to_string_ex(data);
result = php_bin2hex((*data)->value.str.val, (*data)->value.str.len, &newlen);
if(!result) {
RETURN_FALSE;
}
RETURN_STRINGL(result, newlen, 0);
}
/* }}} */
/* {{{ proto int strspn(string str, string mask)
Find length of initial segment consisting entirely of characters found in mask */
PHP_FUNCTION(strspn)
{
zval **s1,**s2;
if (ARG_COUNT(ht)!=2 || zend_get_parameters_ex(2, &s1, &s2) == FAILURE) {
WRONG_PARAM_COUNT;
}
convert_to_string_ex(s1);
convert_to_string_ex(s2);
RETURN_LONG(php_strspn((*s1)->value.str.val, (*s2)->value.str.val,
(*s1)->value.str.val + (*s1)->value.str.len,
(*s2)->value.str.val + (*s2)->value.str.len));
}
/* }}} */
/* {{{ proto int strcspn(string str, string mask)
Find length of initial segment consisting entirely of characters not found in mask */
PHP_FUNCTION(strcspn)
{
zval **s1,**s2;
if (ARG_COUNT(ht)!=2 || zend_get_parameters_ex(2, &s1, &s2) == FAILURE) {
WRONG_PARAM_COUNT;
}
convert_to_string_ex(s1);
convert_to_string_ex(s2);
RETURN_LONG(php_strcspn((*s1)->value.str.val, (*s2)->value.str.val,
(*s1)->value.str.val + (*s1)->value.str.len,
(*s2)->value.str.val + (*s2)->value.str.len));
}
/* }}} */
PHPAPI void php_trim(zval *str, zval * return_value, int mode)
/* mode 1 : trim left
mode 2 : trim right
mode 3 : trim left and right
*/
{
register int i;
int len = str->value.str.len;
int trimmed = 0;
char *c = str->value.str.val;
if (mode & 1) {
for (i = 0; i < len; i++) {
if (c[i] == ' ' || c[i] == '\n' || c[i] == '\r' ||
c[i] == '\t' || c[i] == '\v') {
trimmed++;
} else {
break;
}
}
len -= trimmed;
c += trimmed;
}
if (mode & 2) {
for (i = len - 1; i >= 0; i--) {
if (c[i] == ' ' || c[i] == '\n' || c[i] == '\r' ||
c[i] == '\t' || c[i] == '\v') {
len--;
} else {
break;
}
}
}
RETVAL_STRINGL(c, len, 1);
}
/* {{{ proto string rtrim(string str)
An alias for chop */
/* }}} */
/* {{{ proto string chop(string str)
Remove trailing whitespace */
PHP_FUNCTION(chop)
{
zval **str;
if (ARG_COUNT(ht) != 1 || zend_get_parameters_ex(1, &str) == FAILURE) {
WRONG_PARAM_COUNT;
}
convert_to_string_ex(str);
if ((*str)->type == IS_STRING) {
php_trim(*str, return_value, 2);
return;
}
RETURN_FALSE;
}
/* }}} */
/* {{{ proto string trim(string str)
Strip whitespace from the beginning and end of a string */
PHP_FUNCTION(trim)
{
zval **str;
if (ARG_COUNT(ht) != 1 || zend_get_parameters_ex(1, &str) == FAILURE) {
WRONG_PARAM_COUNT;
}
convert_to_string_ex(str);
if ((*str)->type == IS_STRING) {
php_trim(*str, return_value, 3);
return;
}
RETURN_FALSE;
}
/* }}} */
/* {{{ proto string ltrim(string str)
Strip whitespace from the beginning of a string */
PHP_FUNCTION(ltrim)
{
zval **str;
if (ARG_COUNT(ht) != 1 || zend_get_parameters_ex(1, &str) == FAILURE) {
WRONG_PARAM_COUNT;
}
convert_to_string_ex(str);
if ((*str)->type == IS_STRING) {
php_trim(*str, return_value, 1);
return;
}
RETURN_FALSE;
}
/* }}} */
PHPAPI void php_explode(zval *delim, zval *str, zval *return_value)
{
char *p1, *p2, *endp;
int i = 0;
endp = str->value.str.val + str->value.str.len;
p1 = str->value.str.val;
p2 = php_memnstr(str->value.str.val, delim->value.str.val, delim->value.str.len, endp);
if (p2 == NULL) {
add_index_stringl(return_value, i++, p1, str->value.str.len, 1);
} else {
do {
add_index_stringl(return_value, i++, p1, p2-p1, 1);
p1 = p2 + delim->value.str.len;
} while ((p2 = php_memnstr(p1, delim->value.str.val, delim->value.str.len, endp)) != NULL);
if (p1 <= endp) {
add_index_stringl(return_value, i++, p1, endp-p1, 1);
}
}
}
/* {{{ proto array explode(string separator, string str)
Split a string on string separator and return array of components */
PHP_FUNCTION(explode)
{
zval **str, **delim;
if (ARG_COUNT(ht) != 2 || zend_get_parameters_ex(2, &delim, &str) == FAILURE) {
WRONG_PARAM_COUNT;
}
convert_to_string_ex(str);
convert_to_string_ex(delim);
if (! (*delim)->value.str.len) {
php_error(E_WARNING,"Empty delimiter");
RETURN_FALSE;
}
if (array_init(return_value) == FAILURE) {
RETURN_FALSE;
}
php_explode(*delim, *str, return_value);
}
/* }}} */
/* {{{ proto string join(array src, string glue)
An alias for implode */
/* }}} */
PHPAPI void php_implode(zval *delim, zval *arr, zval *return_value)
{
zval **tmp;
int len = 0, count = 0, target = 0;
/* convert everything to strings, and calculate length */
zend_hash_internal_pointer_reset(arr->value.ht);
while (zend_hash_get_current_data(arr->value.ht, (void **) &tmp) == SUCCESS) {
convert_to_string_ex(tmp);
len += (*tmp)->value.str.len;
if (count>0) {
len += delim->value.str.len;
}
count++;
zend_hash_move_forward(arr->value.ht);
}
/* do it */
return_value->value.str.val = (char *) emalloc(len + 1);
return_value->value.str.val[0] = '\0';
return_value->value.str.val[len] = '\0';
zend_hash_internal_pointer_reset(arr->value.ht);
while (zend_hash_get_current_data(arr->value.ht, (void **) &tmp) == SUCCESS) {
count--;
memcpy(return_value->value.str.val + target, (*tmp)->value.str.val,
(*tmp)->value.str.len);
target += (*tmp)->value.str.len;
if (count > 0) {
memcpy(return_value->value.str.val + target, delim->value.str.val,
delim->value.str.len);
target += delim->value.str.len;
}
zend_hash_move_forward(arr->value.ht);
}
return_value->type = IS_STRING;
return_value->value.str.len = len;
}
/* {{{ proto string implode(array src, string glue)
Join array elements placing glue string between items and return one string */
PHP_FUNCTION(implode)
{
zval **arg1, **arg2, *delim, *arr;
if (ARG_COUNT(ht) != 2 || zend_get_parameters_ex(2, &arg1, &arg2) == FAILURE) {
WRONG_PARAM_COUNT;
}
if ((*arg1)->type == IS_ARRAY && (*arg2)->type == IS_STRING) {
SEPARATE_ZVAL(arg1);
arr = *arg1;
delim = *arg2;
} else if ((*arg2)->type == IS_ARRAY) {
SEPARATE_ZVAL(arg2)
arr = *arg2;
convert_to_string_ex(arg1);
delim = *arg1;
} else {
php_error(E_WARNING, "Bad arguments to %s()",
get_active_function_name());
return;
}
php_implode(delim, arr, return_value);
}
/* }}} */
/* {{{ proto string strtok([string str,] string token)
Tokenize a string */
PHP_FUNCTION(strtok)
{
zval **str, **tok;
char *token = NULL, *tokp=NULL;
char *first = NULL;
int argc;
BLS_FETCH();
argc = ARG_COUNT(ht);
if ((argc == 1 && zend_get_parameters_ex(1, &tok) == FAILURE) ||
(argc == 2 && zend_get_parameters_ex(2, &str, &tok) == FAILURE) ||
argc < 1 || argc > 2) {
WRONG_PARAM_COUNT;
}
convert_to_string_ex(tok);
tokp = token = (*tok)->value.str.val;
if (argc == 2) {
convert_to_string_ex(str);
STR_FREE(BG(strtok_string));
BG(strtok_string) = estrndup((*str)->value.str.val,(*str)->value.str.len);
BG(strtok_pos1) = BG(strtok_string);
BG(strtok_pos2) = NULL;
}
if (BG(strtok_pos1) && *BG(strtok_pos1)) {
for ( /* NOP */ ; token && *token; token++) {
BG(strtok_pos2) = strchr(BG(strtok_pos1), (int) *token);
if (!first || (BG(strtok_pos2) && BG(strtok_pos2) < first)) {
first = BG(strtok_pos2);
}
} /* NB: token is unusable now */
BG(strtok_pos2) = first;
if (BG(strtok_pos2)) {
*BG(strtok_pos2) = '\0';
}
RETVAL_STRING(BG(strtok_pos1),1);
#if 0
/* skip 'token' white space for next call to strtok */
while (BG(strtok_pos2) &&
strchr(tokp, *(BG(strtok_pos2)+1))) {
BG(strtok_pos2)++;
}
#endif
if (BG(strtok_pos2))
BG(strtok_pos1) = BG(strtok_pos2) + 1;
else
BG(strtok_pos1) = NULL;
} else {
RETVAL_FALSE;
}
}
/* }}} */
PHPAPI char *php_strtoupper(char *s, size_t len)
{
char *c;
int ch;
size_t i;
c = s;
for (i=0; i<len; i++) {
ch = toupper((unsigned char)*c);
*c++ = ch;
}
return (s);
}
/* {{{ proto string strtoupper(string str)
Make a string uppercase */
PHP_FUNCTION(strtoupper)
{
zval **arg;
if (ARG_COUNT(ht) != 1 || zend_get_parameters_ex(1, &arg)) {
WRONG_PARAM_COUNT;
}
convert_to_string_ex(arg);
*return_value = **arg;
zval_copy_ctor(return_value);
php_strtoupper(return_value->value.str.val, return_value->value.str.len);
}
/* }}} */
PHPAPI char *php_strtolower(char *s, size_t len)
{
register int ch;
char *c;
size_t i;
c = s;
for (i=0; i<len; i++) {
ch = tolower((unsigned char)*c);
*c++ = ch;
}
return (s);
}
/* {{{ proto string strtolower(string str)
Make a string lowercase */
PHP_FUNCTION(strtolower)
{
zval **str;
char *ret;
if (ARG_COUNT(ht) != 1 || zend_get_parameters_ex(1, &str)) {
WRONG_PARAM_COUNT;
}
convert_to_string_ex(str);
*return_value = **str;
zval_copy_ctor(return_value);
ret = php_strtolower(return_value->value.str.val, return_value->value.str.len);
}
/* }}} */
/* {{{ proto string basename(string path)
Return the filename component of the path */
PHP_FUNCTION(basename)
{
zval **str;
char *ret, *c;
if (ARG_COUNT(ht) != 1 || zend_get_parameters_ex(1, &str)) {
WRONG_PARAM_COUNT;
}
convert_to_string_ex(str);
ret = estrdup((*str)->value.str.val);
c = ret + (*str)->value.str.len -1;
while (*c == '/'
#ifdef PHP_WIN32
|| *c == '\\'
#endif
)
c--;
*(c + 1) = '\0';
if ((c = strrchr(ret, '/'))
#ifdef PHP_WIN32
|| (c = strrchr(ret, '\\'))
#endif
) {
RETVAL_STRING(c + 1,1);
} else {
RETVAL_STRING((*str)->value.str.val,1);
}
efree(ret);
}
/* }}} */
PHPAPI void php_dirname(char *str, int len) {
register char *c;
c = str + len - 1;
while (*c == '/'
#ifdef PHP_WIN32
|| *c == '\\'
#endif
)
c--; /* strip trailing slashes */
*(c + 1) = '\0';
if ((c = strrchr(str, '/'))
#ifdef PHP_WIN32
|| (c = strrchr(str, '\\'))
#endif
)
*c='\0';
}
/* {{{ proto string dirname(string path)
Return the directory name component of the path */
PHP_FUNCTION(dirname)
{
zval **str;
char *ret;
if (ARG_COUNT(ht) != 1 || zend_get_parameters_ex(1, &str)) {
WRONG_PARAM_COUNT;
}
convert_to_string_ex(str);
ret = estrdup((*str)->value.str.val);
php_dirname(ret,(*str)->value.str.len);
RETVAL_STRING(ret,1);
efree(ret);
}
/* }}} */
/* case insensitve strstr */
PHPAPI char *php_stristr(unsigned char *s, unsigned char *t,
size_t s_len, size_t t_len)
{
php_strtolower(s, s_len);
php_strtolower(t, t_len);
return php_memnstr(s, t, t_len, s + s_len);
}
PHPAPI size_t php_strspn(char *s1, char *s2, char *s1_end, char *s2_end)
{
register const char *p = s1, *spanp;
register char c = *p;
cont:
for (spanp = s2; p != s1_end && spanp != s2_end;)
if (*spanp++ == c) {
c = *(++p);
goto cont;
}
return (p - s1);
}
PHPAPI size_t php_strcspn(char *s1, char *s2, char *s1_end, char *s2_end)
{
register const char *p, *spanp;
register char c = *s1;
for (p = s1;;) {
spanp = s2;
do {
if (*spanp == c || p == s1_end)
return (p - s1);
} while (spanp++ < s2_end);
c = *(++p);
}
/* NOTREACHED */
}
/* {{{ proto string stristr(string haystack, string needle)
Find first occurrence of a string within another, case insensitive */
PHP_FUNCTION(stristr)
{
zval **haystack, **needle;
char *found = NULL;
int found_offset;
char *haystack_orig;
char needle_char[2];
if (ARG_COUNT(ht) != 2 || zend_get_parameters_ex(2, &haystack, &needle) ==
FAILURE) {
WRONG_PARAM_COUNT;
}
SEPARATE_ZVAL(haystack);
SEPARATE_ZVAL(needle);
convert_to_string_ex(haystack);
haystack_orig = estrndup((*haystack)->value.str.val,
(*haystack)->value.str.len);
if ((*needle)->type == IS_STRING) {
if ((*needle)->value.str.len==0) {
php_error(E_WARNING,"Empty delimiter");
efree(haystack_orig);
RETURN_FALSE;
}
found = php_stristr((*haystack)->value.str.val, (*needle)->value.str.val,
(*haystack)->value.str.len, (*needle)->value.str.len);
} else {
convert_to_long_ex(needle);
needle_char[0] = tolower((char) (*needle)->value.lval);
needle_char[1] = '\0';
found = php_stristr((*haystack)->value.str.val, needle_char,
(*haystack)->value.str.len, 1);
}
if (found) {
found_offset = found - (*haystack)->value.str.val;
RETVAL_STRINGL(haystack_orig + found_offset,
(*haystack)->value.str.len - found_offset, 1);
} else {
RETVAL_FALSE;
}
efree(haystack_orig);
}
/* }}} */
/* {{{ proto string strstr(string haystack, string needle)
Find first occurrence of a string within another */
PHP_FUNCTION(strstr)
{
zval **haystack, **needle;
char *haystack_end;
char *found = NULL;
char needle_char[2];
if (ARG_COUNT(ht) != 2 || zend_get_parameters_ex(2, &haystack, &needle) ==
FAILURE) {
WRONG_PARAM_COUNT;
}
convert_to_string_ex(haystack);
haystack_end = (*haystack)->value.str.val + (*haystack)->value.str.len;
if ((*needle)->type == IS_STRING) {
if ((*needle)->value.str.len==0) {
php_error(E_WARNING,"Empty delimiter");
RETURN_FALSE;
}
found = php_memnstr((*haystack)->value.str.val, (*needle)->value.str.val,
(*needle)->value.str.len, haystack_end);
} else {
convert_to_long_ex(needle);
needle_char[0] = (char) (*needle)->value.lval;
needle_char[1] = '\0';
found = php_memnstr((*haystack)->value.str.val, needle_char, 1, haystack_end);
}
if (found) {
RETVAL_STRING(found, 1);
} else {
RETVAL_FALSE;
}
}
/* }}} */
/* {{{ proto string strchr(string haystack, string needle)
An alias for strstr */
/* }}} */
/* {{{ proto int strpos(string haystack, string needle [, int offset])
Find position of first occurrence of a string within another */
PHP_FUNCTION(strpos)
{
zval **haystack, **needle, **OFFSET;
int offset = 0;
char *found = NULL;
char *endp;
char *startp;
switch(ARG_COUNT(ht)) {
case 2:
if (zend_get_parameters_ex(2, &haystack, &needle) == FAILURE) {
WRONG_PARAM_COUNT;
}
break;
case 3:
if (zend_get_parameters_ex(3, &haystack, &needle, &OFFSET) == FAILURE) {
WRONG_PARAM_COUNT;
}
convert_to_long_ex(OFFSET);
offset = (*OFFSET)->value.lval;
if (offset < 0) {
php_error(E_WARNING,"offset not contained in string");
RETURN_FALSE;
}
break;
default:
WRONG_PARAM_COUNT;
}
convert_to_string_ex(haystack);
if (offset > (*haystack)->value.str.len) {
php_error(E_WARNING,"offset not contained in string");
RETURN_FALSE;
}
startp = (*haystack)->value.str.val;
startp+= offset;
endp = (*haystack)->value.str.val;
endp+= (*haystack)->value.str.len;
if ((*needle)->type == IS_STRING) {
if ((*needle)->value.str.len==0) {
php_error(E_WARNING,"Empty delimiter");
RETURN_FALSE;
}
found = php_memnstr(startp, (*needle)->value.str.val, (*needle)->value.str.len, endp);
} else {
char buf;
convert_to_long_ex(needle);
buf = (char) (*needle)->value.lval;
found = php_memnstr(startp, &buf, 1, endp);
}
if (found) {
RETVAL_LONG(found - (*haystack)->value.str.val);
} else {
RETVAL_FALSE;
}
}
/* }}} */
/* {{{ proto int strrpos(string haystack, string needle)
Find the last occurrence of a character in a string within another */
PHP_FUNCTION(strrpos)
{
zval **haystack, **needle;
char *found = NULL;
if (ARG_COUNT(ht) != 2 || zend_get_parameters_ex(2, &haystack, &needle) == FAILURE) {
WRONG_PARAM_COUNT;
}
convert_to_string_ex(haystack);
if ((*needle)->type == IS_STRING) {
found = strrchr((*haystack)->value.str.val, *(*needle)->value.str.val);
} else {
convert_to_long_ex(needle);
found = strrchr((*haystack)->value.str.val, (char) (*needle)->value.lval);
}
if (found) {
RETVAL_LONG((*haystack)->value.str.len - strlen(found));
} else {
RETVAL_FALSE;
}
}
/* }}} */
/* {{{ proto string strrchr(string haystack, string needle)
Find the last occurrence of a character in a string within another */
PHP_FUNCTION(strrchr)
{
zval **haystack, **needle;
char *found = NULL;
if (ARG_COUNT(ht) != 2 || zend_get_parameters_ex(2, &haystack, &needle) ==
FAILURE) {
WRONG_PARAM_COUNT;
}
convert_to_string_ex(haystack);
if ((*needle)->type == IS_STRING) {
found = strrchr((*haystack)->value.str.val, *(*needle)->value.str.val);
} else {
convert_to_long_ex(needle);
found = strrchr((*haystack)->value.str.val, (*needle)->value.lval);
}
if (found) {
RETVAL_STRING(found,1);
} else {
RETVAL_FALSE;
}
}
/* }}} */
static char *php_chunk_split(char *src, int srclen, char *end, int endlen,
int chunklen, int *destlen)
{
char *dest;
char *p, *q;
int chunks; /* complete chunks! */
int restlen;
chunks = srclen / chunklen;
restlen = srclen - chunks * chunklen; /* srclen % chunklen */
dest = emalloc((srclen + (chunks + 1) * endlen + 1) * sizeof(char));
for(p = src, q = dest; p < (src + srclen - chunklen + 1); ) {
memcpy(q, p, chunklen);
q += chunklen;
memcpy(q, end, endlen);
q += endlen;
p += chunklen;
}
if(restlen) {
memcpy(q, p, restlen);
q += restlen;
memcpy(q, end, endlen);
q += endlen;
}
*q = '\0';
if (destlen) {
*destlen = q - dest;
}
return(dest);
}
/* {{{ proto string chunk_split(string str [, int chunklen [, string ending]])
Return split line */
PHP_FUNCTION(chunk_split)
{
zval **p_str, **p_chunklen, **p_ending;
int argc;
char *result;
char *end = "\r\n";
int endlen = 2;
int chunklen = 76;
int result_len;
argc = ARG_COUNT(ht);
if (argc < 1 || argc > 3 ||
zend_get_parameters_ex(argc, &p_str, &p_chunklen, &p_ending) == FAILURE) {
WRONG_PARAM_COUNT;
}
switch(argc) {
case 3:
convert_to_string_ex(p_ending);
end = (*p_ending)->value.str.val;
endlen = (*p_ending)->value.str.len;
case 2:
convert_to_long_ex(p_chunklen);
chunklen = (*p_chunklen)->value.lval;
case 1:
convert_to_string_ex(p_str);
}
if(chunklen == 0) {
php_error(E_WARNING, "chunk length is 0");
RETURN_FALSE;
}
result = php_chunk_split((*p_str)->value.str.val, (*p_str)->value.str.len,
end, endlen, chunklen, &result_len);
if(result) {
RETVAL_STRINGL(result, result_len, 0);
} else {
RETURN_FALSE;
}
}
/* }}} */
/* {{{ proto string substr(string str, int start [, int length])
Return part of a string */
PHP_FUNCTION(substr)
{
zval **str, **from, **len;
int argc, l;
int f;
argc = ARG_COUNT(ht);
if ((argc == 2 && zend_get_parameters_ex(2, &str, &from) == FAILURE) ||
(argc == 3 && zend_get_parameters_ex(3, &str, &from, &len) == FAILURE) ||
argc < 2 || argc > 3) {
WRONG_PARAM_COUNT;
}
convert_to_string_ex(str);
convert_to_long_ex(from);
f = (*from)->value.lval;
if (argc == 2) {
l = (*str)->value.str.len;
} else {
convert_to_long_ex(len);
l = (*len)->value.lval;
}
/* if "from" position is negative, count start position from the end
* of the string
*/
if (f < 0) {
f = (*str)->value.str.len + f;
if (f < 0) {
f = 0;
}
}
/* if "length" position is negative, set it to the length
* needed to stop that many chars from the end of the string
*/
if (l < 0) {
l = ((*str)->value.str.len - f) + l;
if (l < 0) {
l = 0;
}
}
if (f >= (int)(*str)->value.str.len) {
RETURN_FALSE;
}
if((f+l) > (int)(*str)->value.str.len) {
l = (int)(*str)->value.str.len - f;
}
RETVAL_STRINGL((*str)->value.str.val + f, l, 1);
}
/* }}} */
/* {{{ proto string substr_replace(string str, string repl, int start [, int length])
Replace part of a string with another string */
PHP_FUNCTION(substr_replace)
{
zval** str;
zval** from;
zval** len;
zval** repl;
char* result;
int result_len;
int argc;
int l;
int f;
argc = ARG_COUNT(ht);
if ((argc == 3 && zend_get_parameters_ex(3, &str, &repl, &from) == FAILURE) ||
(argc == 4 && zend_get_parameters_ex(4, &str, &repl, &from, &len) == FAILURE) ||
argc < 3 || argc > 4) {
WRONG_PARAM_COUNT;
}
convert_to_string_ex(str);
convert_to_string_ex(repl);
convert_to_long_ex(from);
f = (*from)->value.lval;
if (argc == 3) {
l = (*str)->value.str.len;
} else {
convert_to_long_ex(len);
l = (*len)->value.lval;
}
/* if "from" position is negative, count start position from the end
* of the string
*/
if (f < 0) {
f = (*str)->value.str.len + f;
if (f < 0) {
f = 0;
}
}
/* if "length" position is negative, set it to the length
* needed to stop that many chars from the end of the string
*/
if (l < 0) {
l = ((*str)->value.str.len - f) + l;
if (l < 0) {
l = 0;
}
}
if (f >= (int)(*str)->value.str.len) {
RETURN_STRINGL((*str)->value.str.val, (*str)->value.str.len, 1);
}
if((f+l) > (int)(*str)->value.str.len) {
l = (int)(*str)->value.str.len - f;
}
result_len = (*str)->value.str.len - l + (*repl)->value.str.len;
result = (char *)ecalloc(result_len + 1, sizeof(char *));
memcpy(result, (*str)->value.str.val, f);
memcpy(&result[f], (*repl)->value.str.val, (*repl)->value.str.len);
memcpy(&result[f + (*repl)->value.str.len], (*str)->value.str.val + f + l,
(*str)->value.str.len - f - l);
RETVAL_STRINGL(result, result_len, 0);
}
/* }}} */
/* {{{ proto string quotemeta(string str)
Quote meta characters */
PHP_FUNCTION(quotemeta)
{
zval **arg;
char *str, *old;
char *old_end;
char *p, *q;
char c;
if (ARG_COUNT(ht) != 1 || zend_get_parameters_ex(1, &arg) == FAILURE) {
WRONG_PARAM_COUNT;
}
convert_to_string_ex(arg);
old = (*arg)->value.str.val;
old_end = (*arg)->value.str.val + (*arg)->value.str.len;
if (old == old_end) {
RETURN_FALSE;
}
str = emalloc(2 * (*arg)->value.str.len + 1);
for(p = old, q = str; p != old_end; p++) {
c = *p;
switch(c) {
case '.':
case '\\':
case '+':
case '*':
case '?':
case '[':
case '^':
case ']':
case '$':
case '(':
case ')':
*q++ = '\\';
/* break is missing _intentionally_ */
default:
*q++ = c;
}
}
*q = 0;
RETVAL_STRINGL(erealloc(str, q - str + 1), q - str, 0);
}
/* }}} */
/* {{{ proto int ord(string character)
Return ASCII value of character */
PHP_FUNCTION(ord)
{
zval **str;
if (ARG_COUNT(ht) != 1 || zend_get_parameters_ex(1, &str) == FAILURE) {
WRONG_PARAM_COUNT;
}
convert_to_string_ex(str);
RETVAL_LONG((unsigned char)(*str)->value.str.val[0]);
}
/* }}} */
/* {{{ proto string chr(int ascii)
Convert ASCII code to a character */
PHP_FUNCTION(chr)
{
zval **num;
char temp[2];
if (ARG_COUNT(ht) != 1 || zend_get_parameters_ex(1, &num) == FAILURE) {
WRONG_PARAM_COUNT;
}
convert_to_long_ex(num);
temp[0] = (char) (*num)->value.lval;
temp[1] = '\0';
RETVAL_STRINGL(temp, 1,1);
}
/* }}} */
/* {{{ proto string ucfirst(string str)
Make a string's first character uppercase */
PHP_FUNCTION(ucfirst)
{
zval **arg;
if (ARG_COUNT(ht) != 1 || zend_get_parameters_ex(1, &arg) == FAILURE) {
WRONG_PARAM_COUNT;
}
convert_to_string_ex(arg);
if (!*(*arg)->value.str.val) {
RETURN_FALSE;
}
*return_value=**arg;
zval_copy_ctor(return_value);
*return_value->value.str.val = toupper((unsigned char)*return_value->value.str.val);
}
/* }}} */
/* {{{ proto string ucwords(string str)
Uppercase the first character of every word in a string */
PHP_FUNCTION(ucwords)
{
zval **str;
char *r;
char *r_end;
if (ARG_COUNT(ht) != 1 || zend_get_parameters_ex(1, &str) == FAILURE) {
WRONG_PARAM_COUNT;
}
convert_to_string_ex(str);
if (!(*str)->value.str.len) {
RETURN_FALSE;
}
*return_value=**str;
zval_copy_ctor(return_value);
*return_value->value.str.val = toupper((unsigned char)*return_value->value.str.val);
r=return_value->value.str.val;
r_end = r + (*str)->value.str.len;
while((r=php_memnstr(r, " ", 1, r_end)) != NULL){
if(r < r_end){
r++;
*r=toupper((unsigned char)*r);
} else {
break;
}
}
}
/* }}} */
PHPAPI char *php_strtr(char *str, int len, char *str_from,
char *str_to, int trlen)
{
int i;
unsigned char xlat[256];
if ((trlen < 1) || (len < 1)) {
return str;
}
for (i = 0; i < 256; xlat[i] = i, i++);
for (i = 0; i < trlen; i++) {
xlat[(unsigned char) str_from[i]] = str_to[i];
}
for (i = 0; i < len; i++) {
str[i] = xlat[(unsigned char) str[i]];
}
return str;
}
static void php_strtr_array(zval *return_value,char *str,int slen,HashTable *hash)
{
zval *entry;
char *string_key;
zval **trans;
zval ctmp;
ulong num_key;
int minlen = 128*1024;
int maxlen = 0, pos, len, newpos, newlen, found;
char *newstr, *key;
zend_hash_internal_pointer_reset(hash);
while (zend_hash_get_current_data(hash, (void **)&entry) == SUCCESS) {
switch (zend_hash_get_current_key(hash, &string_key, &num_key)) {
case HASH_KEY_IS_STRING:
len = strlen(string_key);
if (len > maxlen) maxlen = len;
if (len < minlen) minlen = len;
efree(string_key);
break;
case HASH_KEY_IS_LONG:
ctmp.type = IS_LONG;
ctmp.value.lval = num_key;
convert_to_string(&ctmp);
len = ctmp.value.str.len;
zval_dtor(&ctmp);
if (len > maxlen) maxlen = len;
if (len < minlen) minlen = len;
break;
}
zend_hash_move_forward(hash);
}
key = emalloc(maxlen+1);
newstr = emalloc(8192);
newlen = 8192;
newpos = pos = 0;
while (pos < slen) {
if ((pos + maxlen) > slen) {
maxlen = slen - pos;
}
found = 0;
memcpy(key,str+pos,maxlen);
for (len = maxlen; len >= minlen; len--) {
key[ len ]=0;
if (zend_hash_find(hash,key,len+1,(void**)&trans) == SUCCESS) {
char *tval;
int tlen;
zval tmp;
if ((*trans)->type != IS_STRING) {
tmp = **trans;
zval_copy_ctor(&tmp);
convert_to_string(&tmp);
tval = tmp.value.str.val;
tlen = tmp.value.str.len;
} else {
tval = (*trans)->value.str.val;
tlen = (*trans)->value.str.len;
}
if ((newpos + tlen + 1) > newlen) {
newlen = newpos + tlen + 1 + 8192;
newstr = erealloc(newstr,newlen);
}
memcpy(newstr+newpos,tval,tlen);
newpos += tlen;
pos += len;
found = 1;
if ((*trans)->type != IS_STRING) {
zval_dtor(&tmp);
}
break;
}
}
if (! found) {
if ((newpos + 1) > newlen) {
newlen = newpos + 1 + 8192;
newstr = erealloc(newstr,newlen);
}
newstr[ newpos++ ] = str[ pos++ ];
}
}
efree(key);
newstr[ newpos ] = 0;
RETURN_STRINGL(newstr,newpos,0);
}
/* {{{ proto string strtr(string str, string from, string to)
Translate characters in str using given translation tables */
PHP_FUNCTION(strtr)
{ /* strtr(STRING,FROM,TO) */
zval **str, **from, **to;
int ac = ARG_COUNT(ht);
if (ac < 2 || ac > 3 || zend_get_parameters_ex(ac, &str, &from, &to) == FAILURE) {
WRONG_PARAM_COUNT;
}
if (ac == 2 && (*from)->type != IS_ARRAY) {
php_error(E_WARNING,"arg2 must be passed an array");
RETURN_FALSE;
}
convert_to_string_ex(str);
if (ac == 2) {
php_strtr_array(return_value,(*str)->value.str.val,(*str)->value.str.len,HASH_OF(*from));
} else {
convert_to_string_ex(from);
convert_to_string_ex(to);
*return_value=**str;
zval_copy_ctor(return_value);
php_strtr(return_value->value.str.val,
return_value->value.str.len,
(*from)->value.str.val,
(*to)->value.str.val,
MIN((*from)->value.str.len,(*to)->value.str.len));
}
}
/* }}} */
/* {{{ proto string strrev(string str)
Reverse a string */
PHP_FUNCTION(strrev)
{
zval **str;
int i,len;
char c;
if (ARG_COUNT(ht)!=1 || zend_get_parameters_ex(1, &str)==FAILURE) {
WRONG_PARAM_COUNT;
}
convert_to_string_ex(str);
*return_value = **str;
zval_copy_ctor(return_value);
len = return_value->value.str.len;
for (i=0; i<len-1-i; i++) {
c=return_value->value.str.val[i];
return_value->value.str.val[i] = return_value->value.str.val[len-1-i];
return_value->value.str.val[len-1-i]=c;
}
}
/* }}} */
static void php_similar_str(const char *txt1, int len1, const char *txt2,
int len2, int *pos1, int *pos2, int *max)
{
char *p, *q;
char *end1 = (char *) txt1 + len1;
char *end2 = (char *) txt2 + len2;
int l;
*max = 0;
for (p = (char *) txt1; p < end1; p++) {
for (q = (char *) txt2; q < end2; q++) {
for (l = 0; (p + l < end1) && (q + l < end2) && (p[l] == q[l]);
l++);
if (l > *max) {
*max = l;
*pos1 = p - txt1;
*pos2 = q - txt2;
}
}
}
}
static int php_similar_char(const char *txt1, int len1,
const char *txt2, int len2)
{
int sum;
int pos1, pos2, max;
php_similar_str(txt1, len1, txt2, len2, &pos1, &pos2, &max);
if ((sum = max)) {
if (pos1 && pos2)
sum += php_similar_char(txt1, pos1, txt2, pos2);
if ((pos1 + max < len1) && (pos2 + max < len2))
sum += php_similar_char(txt1 + pos1 + max, len1 - pos1 - max,
txt2 + pos2 + max, len2 - pos2 - max);
}
return sum;
}
/* {{{ proto int similar_text(string str1, string str2 [, double percent])
Calculates the similarity between two strings */
PHP_FUNCTION(similar_text)
{
zval **t1, **t2, **percent;
int ac = ARG_COUNT(ht);
int sim;
if (ac < 2 || ac > 3 ||
zend_get_parameters_ex(ac, &t1, &t2, &percent) == FAILURE) {
WRONG_PARAM_COUNT;
}
convert_to_string_ex(t1);
convert_to_string_ex(t2);
if (ac > 2) {
convert_to_double_ex(percent);
}
if (((*t1)->value.str.len + (*t2)->value.str.len) == 0) {
if(ac > 2) {
(*percent)->value.dval = 0;
}
RETURN_LONG(0);
}
sim = php_similar_char((*t1)->value.str.val, (*t1)->value.str.len,
(*t2)->value.str.val, (*t2)->value.str.len);
if (ac > 2) {
(*percent)->value.dval = sim * 200.0 / ((*t1)->value.str.len + (*t2)->value.str.len);
}
RETURN_LONG(sim);
}
/* }}} */
/* be careful, this edits the string in-place */
PHPAPI void php_stripslashes(char *str, int *len)
{
char *s, *t;
int l;
char escape_char='\\';
PLS_FETCH();
if (PG(magic_quotes_sybase)) {
escape_char='\'';
}
if (len != NULL) {
l = *len;
} else {
l = strlen(str);
}
s = str;
t = str;
while (l > 0) {
if (*t == escape_char) {
t++; /* skip the slash */
if (len != NULL)
(*len)--;
l--;
if (l > 0) {
if(*t=='0') {
*s++='\0';
t++;
} else {
*s++ = *t++; /* preserve the next character */
}
l--;
}
} else {
if (s != t)
*s++ = *t++;
else {
s++;
t++;
}
l--;
}
}
if (s != t) {
*s = '\0';
}
}
/* {{{ proto string addcslashes(string str, string charlist)
Escape all chars mentioned in charlist with backslash. It creates octal representations if asked to backslash characters with 8th bit set or with ASCII<32 (except '\n', '\r', '\t' etc...). */
PHP_FUNCTION(addcslashes)
{
zval **str, **what;
if (ARG_COUNT(ht) != 2 || zend_get_parameters_ex(2, &str, &what) == FAILURE) {
WRONG_PARAM_COUNT;
}
convert_to_string_ex(str);
convert_to_string_ex(what);
return_value->value.str.val = php_addcslashes((*str)->value.str.val,(*str)->value.str.len,&return_value->value.str.len,0,(*what)->value.str.val,(*what)->value.str.len);
return_value->type = IS_STRING;
}
/* }}} */
/* {{{ proto string addslashes(string str)
Escape single quote, double quotes and backslash characters in a string with backslashes */
PHP_FUNCTION(addslashes)
{
zval **str;
if (ARG_COUNT(ht) != 1 || zend_get_parameters_ex(1, &str) == FAILURE) {
WRONG_PARAM_COUNT;
}
convert_to_string_ex(str);
return_value->value.str.val = php_addslashes((*str)->value.str.val,(*str)->value.str.len,&return_value->value.str.len,0);
return_value->type = IS_STRING;
}
/* }}} */
/* {{{ proto string stripcslashes(string str)
Strip backslashes from a string. Uses C-style conventions */
PHP_FUNCTION(stripcslashes)
{
zval **str;
if (ARG_COUNT(ht) != 1 || zend_get_parameters_ex(1, &str) == FAILURE) {
WRONG_PARAM_COUNT;
}
convert_to_string_ex(str);
*return_value = **str;
zval_copy_ctor(return_value);
php_stripcslashes(return_value->value.str.val,&return_value->value.str.len);
}
/* }}} */
/* {{{ proto string stripslashes(string str)
Strip backslashes from a string */
PHP_FUNCTION(stripslashes)
{
zval **str;
if (ARG_COUNT(ht) != 1 || zend_get_parameters_ex(1, &str) == FAILURE) {
WRONG_PARAM_COUNT;
}
convert_to_string_ex(str);
*return_value = **str;
zval_copy_ctor(return_value);
php_stripslashes(return_value->value.str.val,&return_value->value.str.len);
}
/* }}} */
#ifndef HAVE_STRERROR
char *php_strerror(int errnum)
{
extern int sys_nerr;
extern char *sys_errlist[];
BLS_FETCH();
if ((unsigned int)errnum < sys_nerr) return(sys_errlist[errnum]);
(void)sprintf(BG(str_ebuf), "Unknown error: %d", errnum);
return(BG(str_ebuf));
}
#endif
PHPAPI void php_stripcslashes(char *str, int *len)
{
char *source,*target,*end;
int nlen = *len, i;
char numtmp[4];
for (source=str,end=str+nlen,target=str; source<end; source++) {
if (*source == '\\' && source+1<end) {
source++;
switch (*source) {
case 'n': *target++='\n'; nlen--; break;
case 'r': *target++='\r'; nlen--; break;
case 'a': *target++='\a'; nlen--; break;
case 't': *target++='\t'; nlen--; break;
case 'v': *target++='\v'; nlen--; break;
case 'b': *target++='\b'; nlen--; break;
case 'f': *target++='\f'; nlen--; break;
case '\\': *target++='\\'; nlen--; break;
case 'x': if (source+1<end && isxdigit((int)(*(source+1)))) {
numtmp[0] = *++source;
if (source+1<end && isxdigit((int)(*(source+1)))) {
numtmp[1] = *++source;
numtmp[2] = '\0';
nlen-=3;
} else {
numtmp[1] = '\0';
nlen-=2;
}
*target++=(char)strtol(numtmp, NULL, 16);
break;
}
/* break is left intentionally */
default: i=0;
while (source<end && *source>='0' && *source<='7' && i<3) {
numtmp[i++] = *source++;
}
if (i) {
numtmp[i]='\0';
*target++=(char)strtol(numtmp, NULL, 8);
nlen-=i;
source--;
} else {
*target++='\\';
*target++=*source;
}
}
} else {
*target++=*source;
}
}
*target='\0';
*len = nlen;
}
PHPAPI char *php_addcslashes(char *str, int length, int *new_length, int should_free, char *what, int wlength)
{
char flags[256];
char *new_str = emalloc((length?length:(length=strlen(str)))*4+1);
char *source,*target;
char *end;
char c;
int newlen;
if (!wlength) {
wlength = strlen(what);
}
if (!length) {
length = strlen(str);
}
memset(flags, '\0', sizeof(flags));
for (source=what,end=source+wlength; (c=*source) || source<end; source++) {
if (source+3<end && *(source+1) == '.' && *(source+2) == '.' && (unsigned char)*(source+3)>=(unsigned char)c) {
memset(flags+c, 1, (unsigned char)*(source+3)-(unsigned char)c+1);
source+=3;
} else
flags[(unsigned char)c]=1;
}
for (source=str,end=source+length,target=new_str; (c=*source) || source<end; source++) {
if (flags[(unsigned char)c]) {
if ((unsigned char)c<32 || (unsigned char)c>126) {
*target++ = '\\';
switch (c) {
case '\n': *target++ = 'n'; break;
case '\t': *target++ = 't'; break;
case '\r': *target++ = 'r'; break;
case '\a': *target++ = 'a'; break;
case '\v': *target++ = 'v'; break;
case '\b': *target++ = 'b'; break;
case '\f': *target++ = 'f'; break;
default: target += sprintf(target, "%03o", (unsigned char)c);
}
continue;
}
*target++ = '\\';
}
*target++ = c;
}
*target = 0;
newlen = target-new_str;
if (target-new_str<length*4) {
new_str = erealloc(new_str, newlen+1);
}
if (new_length) {
*new_length = newlen;
}
if (should_free) {
STR_FREE(str);
}
return new_str;
}
PHPAPI char *php_addslashes(char *str, int length, int *new_length, int should_free)
{
/* maximum string length, worst case situation */
char *new_str;
char *source,*target;
char *end;
char c;
PLS_FETCH();
if (!str) {
*new_length = 0;
return str;
}
new_str = (char *) emalloc((length?length:(length=strlen(str)))*2+1);
for (source=str,end=source+length,target=new_str; (c = *source) || source<end; source++) {
switch(c) {
case '\0':
*target++ = '\\';
*target++ = '0';
break;
case '\'':
if (PG(magic_quotes_sybase)) {
*target++ = '\'';
*target++ = '\'';
break;
}
/* break is missing *intentionally* */
case '\"':
case '\\':
if (!PG(magic_quotes_sybase)) {
*target++ = '\\';
}
/* break is missing *intentionally* */
default:
*target++ = c;
break;
}
}
*target = 0;
if (new_length) {
*new_length = target - new_str;
}
if (should_free) {
STR_FREE(str);
}
return new_str;
}
#define _HEB_BLOCK_TYPE_ENG 1
#define _HEB_BLOCK_TYPE_HEB 2
#define isheb(c) (((((unsigned char) c)>=224) && (((unsigned char) c)<=250)) ? 1 : 0)
#define _isblank(c) (((((unsigned char) c)==' ' || ((unsigned char) c)=='\t')) ? 1 : 0)
#define _isnewline(c) (((((unsigned char) c)=='\n' || ((unsigned char) c)=='\r')) ? 1 : 0)
PHPAPI void php_char_to_str(char *str,uint len,char from,char *to,int to_len,zval *result)
{
int char_count=0;
char *source,*target,*tmp,*source_end=str+len, *tmp_end=NULL;
for (source=str; source<source_end; source++) {
if (*source==from) {
char_count++;
}
}
result->type = IS_STRING;
if (char_count==0) {
result->value.str.val = estrndup(str,len);
result->value.str.len = len;
return;
}
result->value.str.len = len+char_count*(to_len-1);
result->value.str.val = target = (char *) emalloc(result->value.str.len+1);
for (source=str; source<source_end; source++) {
if (*source==from) {
for (tmp=to,tmp_end=tmp+to_len; tmp<tmp_end; tmp++) {
*target = *tmp;
target++;
}
} else {
*target = *source;
target++;
}
}
*target = 0;
}
PHPAPI inline char *
php_memnstr(char *haystack, char *needle, int needle_len, char *end)
{
char *p = haystack;
char *s = NULL;
for(; p <= end - needle_len &&
(s = memchr(p, *needle, end - p - needle_len + 1)); p = s + 1) {
if(memcmp(s, needle, needle_len) == 0)
return s;
}
return NULL;
}
PHPAPI char *php_str_to_str(char *haystack, int length,
char *needle, int needle_len, char *str, int str_len, int *_new_length)
{
char *p, *q;
char *r, *s;
char *end = haystack + length;
char *result;
char *off;
result = emalloc(length);
/* we jump through haystack searching for the needle. hurray! */
for(p = haystack, q = result;
(r = php_memnstr(p, needle, needle_len, end));) {
/* this ain't optimal. you could call it `efficient memory usage' */
off = erealloc(result, (q - result) + (r - p) + (str_len) + 1);
if(off != result) {
if(!off) {
goto finish;
}
q += off - result;
result = off;
}
memcpy(q, p, r - p);
q += r - p;
memcpy(q, str, str_len);
q += str_len;
p = r + needle_len;
}
/* if there is a rest, copy it */
if((end - p) > 0) {
s = (q) + (end - p);
off = erealloc(result, s - result + 1);
if(off != result) {
if(!off) {
goto finish;
}
q += off - result;
result = off;
s = q + (end - p);
}
memcpy(q, p, end - p);
q = s;
}
finish:
*q = '\0';
if(_new_length) *_new_length = q - result;
return result;
}
/* {{{ proto string str_replace(string needle, string str, string haystack)
Replace all occurrences of needle in haystack with str */
PHP_FUNCTION(str_replace)
{
zval **haystack, **needle, **str;
char *result;
int len = 0;
if(ARG_COUNT(ht) != 3 ||
zend_get_parameters_ex(3, &needle, &str, &haystack) == FAILURE) {
WRONG_PARAM_COUNT;
}
convert_to_string_ex(haystack);
convert_to_string_ex(needle);
convert_to_string_ex(str);
if((*haystack)->value.str.len == 0) {
RETURN_STRING(empty_string,1);
}
if((*needle)->value.str.len == 1) {
php_char_to_str((*haystack)->value.str.val,
(*haystack)->value.str.len,
(*needle)->value.str.val[0],
(*str)->value.str.val,
(*str)->value.str.len,
return_value);
return;
}
if((*needle)->value.str.len == 0) {
php_error(E_WARNING, "The length of the needle must not be 0");
RETURN_FALSE;
}
result = php_str_to_str((*haystack)->value.str.val, (*haystack)->value.str.len,
(*needle)->value.str.val, (*needle)->value.str.len,
(*str)->value.str.val, (*str)->value.str.len, &len);
RETURN_STRINGL(result, len, 0);
}
/* }}} */
/* Converts Logical Hebrew text (Hebrew Windows style) to Visual text
* Cheers/complaints/flames - Zeev Suraski <zeev@php.net>
*/
static void php_hebrev(INTERNAL_FUNCTION_PARAMETERS,int convert_newlines)
{
zval **str,**max_chars_per_line;
char *heb_str,*tmp,*target,*opposite_target,*broken_str;
int block_start, block_end, block_type, block_length, i;
int block_ended;
long max_chars=0;
int begin,end,char_count,orig_begin;
switch(ARG_COUNT(ht)) {
case 1:
if (zend_get_parameters_ex(1, &str)==FAILURE) {
RETURN_FALSE;
}
break;
case 2:
if (zend_get_parameters_ex(2, &str, &max_chars_per_line)==FAILURE) {
RETURN_FALSE;
}
convert_to_long_ex(max_chars_per_line);
max_chars = (*max_chars_per_line)->value.lval;
break;
default:
WRONG_PARAM_COUNT;
break;
}
convert_to_string_ex(str);
if ((*str)->value.str.len==0) {
RETURN_FALSE;
}
tmp = (*str)->value.str.val;
block_start=block_end=0;
block_ended=0;
heb_str = (char *) emalloc((*str)->value.str.len+1);
target = heb_str+(*str)->value.str.len;
opposite_target = heb_str;
*target = 0;
target--;
block_length=0;
if (isheb(*tmp)) {
block_type = _HEB_BLOCK_TYPE_HEB;
} else {
block_type = _HEB_BLOCK_TYPE_ENG;
}
do {
if (block_type==_HEB_BLOCK_TYPE_HEB) {
while((isheb((int)*(tmp+1)) || _isblank((int)*(tmp+1)) || ispunct((int)*(tmp+1)) || (int)*(tmp+1)=='\n' ) && block_end<(*str)->value.str.len-1) {
tmp++;
block_end++;
block_length++;
}
for (i=block_start; i<=block_end; i++) {
*target = (*str)->value.str.val[i];
switch (*target) {
case '(':
*target = ')';
break;
case ')':
*target = '(';
break;
default:
break;
}
target--;
}
block_type = _HEB_BLOCK_TYPE_ENG;
} else {
while(!isheb(*(tmp+1)) && (int)*(tmp+1)!='\n' && block_end<(*str)->value.str.len-1) {
tmp++;
block_end++;
block_length++;
}
while ((_isblank((int)*tmp) || ispunct((int)*tmp)) && *tmp!='/' && *tmp!='-' && block_end>block_start) {
tmp--;
block_end--;
}
for (i=block_end; i>=block_start; i--) {
*target = (*str)->value.str.val[i];
target--;
}
block_type = _HEB_BLOCK_TYPE_HEB;
}
block_start=block_end+1;
} while(block_end<(*str)->value.str.len-1);
broken_str = (char *) emalloc((*str)->value.str.len+1);
begin=end=(*str)->value.str.len-1;
target = broken_str;
while (1) {
char_count=0;
while ((!max_chars || char_count<max_chars) && begin>0) {
char_count++;
begin--;
if (begin<=0 || _isnewline(heb_str[begin])) {
while(begin>0 && _isnewline(heb_str[begin-1])) {
begin--;
char_count++;
}
break;
}
}
if (char_count==max_chars) { /* try to avoid breaking words */
int new_char_count=char_count, new_begin=begin;
while (new_char_count>0) {
if (_isblank(heb_str[new_begin]) || _isnewline(heb_str[new_begin])) {
break;
}
new_begin++;
new_char_count--;
}
if (new_char_count>0) {
char_count=new_char_count;
begin=new_begin;
}
}
orig_begin=begin;
if (_isblank(heb_str[begin])) {
heb_str[begin]='\n';
}
while (begin<=end && _isnewline(heb_str[begin])) { /* skip leading newlines */
begin++;
}
for (i=begin; i<=end; i++) { /* copy content */
*target = heb_str[i];
target++;
}
for (i=orig_begin; i<=end && _isnewline(heb_str[i]); i++) {
*target = heb_str[i];
target++;
}
begin=orig_begin;
if (begin<=0) {
*target = 0;
break;
}
begin--;
end=begin;
}
efree(heb_str);
if (convert_newlines) {
php_char_to_str(broken_str,(*str)->value.str.len,'\n',"<br>\n",5,return_value);
efree(broken_str);
} else {
return_value->value.str.val = broken_str;
return_value->value.str.len = (*str)->value.str.len;
return_value->type = IS_STRING;
}
}
/* {{{ proto string hebrev(string str [, int max_chars_per_line])
Convert logical Hebrew text to visual text */
PHP_FUNCTION(hebrev)
{
php_hebrev(INTERNAL_FUNCTION_PARAM_PASSTHRU,0);
}
/* }}} */
/* {{{ proto string hebrevc(string str [, int max_chars_per_line])
Convert logical Hebrew text to visual text with newline conversion */
PHP_FUNCTION(hebrevc)
{
php_hebrev(INTERNAL_FUNCTION_PARAM_PASSTHRU,1);
}
/* }}} */
/* {{{ proto string nl2br(string str)
Converts newlines to HTML line breaks */
PHP_FUNCTION(nl2br)
{
zval **str;
if (ARG_COUNT(ht)!=1 || zend_get_parameters_ex(1, &str)==FAILURE) {
WRONG_PARAM_COUNT;
}
convert_to_string_ex(str);
php_char_to_str((*str)->value.str.val,(*str)->value.str.len,'\n',"<br>\n",5,return_value);
}
/* }}} */
/* {{{ proto string strip_tags(string str [, string allowable_tags])
Strips HTML and PHP tags from a string */
PHP_FUNCTION(strip_tags)
{
char *buf;
zval **str, **allow=NULL;
char *allowed_tags=NULL;
int allowed_tags_len=0;
switch(ARG_COUNT(ht)) {
case 1:
if(zend_get_parameters_ex(1, &str)==FAILURE) {
RETURN_FALSE;
}
break;
case 2:
if(zend_get_parameters_ex(2, &str, &allow)==FAILURE) {
RETURN_FALSE;
}
convert_to_string_ex(allow);
allowed_tags = (*allow)->value.str.val;
allowed_tags_len = (*allow)->value.str.len;
break;
default:
WRONG_PARAM_COUNT;
break;
}
convert_to_string_ex(str);
buf = estrndup((*str)->value.str.val,(*str)->value.str.len);
php_strip_tags(buf, (*str)->value.str.len, 0, allowed_tags, allowed_tags_len);
RETURN_STRING(buf, 0);
}
/* }}} */
/* {{{ proto string setlocale(string category, string locale)
Set locale information */
PHP_FUNCTION(setlocale)
{
zval **pcategory, **plocale;
zval *category, *locale;
int cat;
char *loc, *retval;
BLS_FETCH();
if (ARG_COUNT(ht)!=2 || zend_get_parameters_ex(2, &pcategory, &plocale)==FAILURE)
WRONG_PARAM_COUNT;
#ifdef HAVE_SETLOCALE
convert_to_string_ex(pcategory);
convert_to_string_ex(plocale);
category = *pcategory;
locale = *plocale;
if (!strcasecmp ("LC_ALL", category->value.str.val))
cat = LC_ALL;
else if (!strcasecmp ("LC_COLLATE", category->value.str.val))
cat = LC_COLLATE;
else if (!strcasecmp ("LC_CTYPE", category->value.str.val))
cat = LC_CTYPE;
else if (!strcasecmp ("LC_MONETARY", category->value.str.val))
cat = LC_MONETARY;
else if (!strcasecmp ("LC_NUMERIC", category->value.str.val))
cat = LC_NUMERIC;
else if (!strcasecmp ("LC_TIME", category->value.str.val))
cat = LC_TIME;
else {
php_error(E_WARNING,"Invalid locale category name %s, must be one of LC_ALL, LC_COLLATE, LC_CTYPE, LC_MONETARY, LC_NUMERIC or LC_TIME", category->value.str.val);
RETURN_FALSE;
}
if (!strcmp ("0", locale->value.str.val))
loc = NULL;
else
loc = locale->value.str.val;
retval = setlocale (cat, loc);
if (retval) {
/* Remember if locale was changed */
if (loc) {
STR_FREE(BG(locale_string));
BG(locale_string) = estrdup(retval);
}
RETVAL_STRING(retval,1);
return;
}
#endif
RETURN_FALSE;
}
/* }}} */
/* {{{ proto void parse_str(string encoded_string)
Parses GET/POST/COOKIE data and sets global variables. */
PHP_FUNCTION(parse_str)
{
zval **arg;
char *res = NULL;
PLS_FETCH();
SLS_FETCH();
if (zend_get_parameters_ex(1, &arg) == FAILURE) {
WRONG_PARAM_COUNT;
}
convert_to_string_ex(arg);
if ((*arg)->value.str.val && *(*arg)->value.str.val) {
res = estrndup((*arg)->value.str.val,(*arg)->value.str.len);
}
php_treat_data(PARSE_STRING, res ELS_CC PLS_CC SLS_CC);
}
/* }}} */
#define PHP_TAG_BUF_SIZE 1023
/* Check if tag is in a set of tags
*
* states:
*
* 0 start tag
* 1 first non-whitespace char seen
*/
int php_tag_find(char *tag, int len, char *set) {
char c, *n, *t;
int state=0, done=0;
char *norm = emalloc(len+1);
n = norm;
t = tag;
c = tolower(*t);
/*
normalize the tag removing leading and trailing whitespace
and turn any <a whatever...> into just <a> and any </tag>
into <tag>
*/
if (!len) {
return 0;
}
while(!done) {
switch(c) {
case '<':
*(n++) = c;
break;
case '>':
done =1;
break;
default:
if(!isspace((int)c)) {
if(state==0) {
state=1;
if(c!='/') *(n++) = c;
} else {
*(n++) = c;
}
} else {
if(state==1) done=1;
}
break;
}
c = tolower(*(++t));
}
*(n++) = '>';
*n = '\0';
if(strstr(set,norm)) {
done=1;
} else {
done=0;
}
efree(norm);
return done;
}
/* A simple little state-machine to strip out html and php tags
State 0 is the output state, State 1 means we are inside a
normal html tag and state 2 means we are inside a php tag.
The state variable is passed in to allow a function like fgetss
to maintain state across calls to the function.
lc holds the last significant character read and br is a bracket
counter.
When an allow string is passed in we keep track of the string
in state 1 and when the tag is closed check it against the
allow string to see if we should allow it.
*/
PHPAPI void php_strip_tags(char *rbuf, int len, int state, char *allow, int allow_len)
{
char *tbuf, *buf, *p, *tp, *rp, c, lc;
int br, i=0;
buf = estrndup(rbuf,len);
c = *buf;
lc = '\0';
p = buf;
rp = rbuf;
br = 0;
if(allow) {
php_strtolower(allow, allow_len);
tbuf = emalloc(PHP_TAG_BUF_SIZE+1);
tp = tbuf;
} else {
tbuf = tp = NULL;
}
while(i<len) {
switch (c) {
case '<':
if (state == 0) {
lc = '<';
state = 1;
if(allow) {
*(tp++) = '<';
}
}
break;
case '(':
if (state == 2) {
if (lc != '\"') {
lc = '(';
br++;
}
} else if (state == 0) {
*(rp++) = c;
}
break;
case ')':
if (state == 2) {
if (lc != '\"') {
lc = ')';
br--;
}
} else if (state == 0) {
*(rp++) = c;
}
break;
case '>':
if (state == 1) {
lc = '>';
state = 0;
if(allow) {
*(tp++) = '>';
*tp='\0';
if(php_tag_find(tbuf, tp-tbuf, allow)) {
memcpy(rp,tbuf,tp-tbuf);
rp += tp-tbuf;
}
tp = tbuf;
}
} else if (state == 2) {
if (!br && lc != '\"' && *(p-1)=='?') {
state = 0;
}
}
break;
case '\"':
if (state == 2) {
if (lc == '\"') {
lc = '\0';
} else if (lc != '\\') {
lc = '\"';
}
} else if (state == 0) {
*(rp++) = c;
} else if (allow && state == 1) {
*(tp++) = c;
}
break;
case '?':
if (state==1 && *(p-1)=='<') {
br=0;
state=2;
break;
}
/* fall-through */
default:
if (state == 0) {
*(rp++) = c;
} else if(allow && state == 1) {
*(tp++) = c;
if( (tp-tbuf)>=PHP_TAG_BUF_SIZE ) { /* no buffer overflows */
tp = tbuf;
}
}
break;
}
c = *(++p);
i++;
}
*rp = '\0';
efree(buf);
if(allow) efree(tbuf);
}
/* {{{ proto string str_repeat(string input, int mult)
Returns the input string repeat mult times */
PHP_FUNCTION(str_repeat)
{
zval **input_str; /* Input string */
zval **mult; /* Multiplier */
char *result; /* Resulting string */
int result_len; /* Length of the resulting string */
int i;
if (ARG_COUNT(ht) != 2 || zend_get_parameters_ex(2, &input_str, &mult) == FAILURE) {
WRONG_PARAM_COUNT;
}
/* Make sure we're dealing with proper types */
convert_to_string_ex(input_str);
convert_to_long_ex(mult);
if ((*mult)->value.lval < 1) {
php_error(E_WARNING, "Second argument to %s() has to be greater than 0",
get_active_function_name());
return;
}
/* Don't waste our time if it's empty */
if ((*input_str)->value.str.len == 0)
RETURN_STRINGL(empty_string, 0, 1);
/* Initialize the result string */
result_len = (*input_str)->value.str.len * (*mult)->value.lval;
result = (char *)emalloc(result_len + 1);
/* Copy the input string into the result as many times as necessary */
for (i=0; i<(*mult)->value.lval; i++) {
memcpy(result + (*input_str)->value.str.len * i,
(*input_str)->value.str.val,
(*input_str)->value.str.len);
}
result[result_len] = '\0';
RETURN_STRINGL(result, result_len, 0);
}
/* }}} */
/* {{{ proto mixed count_chars(string input [, int mode])
Returns info about what characters are used in input */
PHP_FUNCTION(count_chars)
{
zval **input, **mode;
int chars[256];
int ac=ARG_COUNT(ht);
int mymode=0;
unsigned char *buf;
int len, inx;
char retstr[256];
int retlen=0;
if (ac < 1 || ac > 2 || zend_get_parameters_ex(ac, &input, &mode) == FAILURE) {
WRONG_PARAM_COUNT;
}
convert_to_string_ex(input);
if (ac == 2) {
convert_to_long_ex(mode);
mymode = (*mode)->value.lval;
if (mymode < 0 || mymode > 4) {
php_error(E_WARNING, "unknown mode");
RETURN_FALSE;
}
}
len = (*input)->value.str.len;
buf = (unsigned char *) (*input)->value.str.val;
memset((void*) chars,0,sizeof(chars));
while (len > 0) {
chars[*buf]++;
buf++;
len--;
}
if (mymode < 3) {
array_init(return_value);
}
for (inx=0; inx < 255; inx++) {
switch (mymode) {
case 0:
add_index_long(return_value,inx,chars[inx]);
break;
case 1:
if (chars[inx] != 0) {
add_index_long(return_value,inx,chars[inx]);
}
break;
case 2:
if (chars[inx] == 0) {
add_index_long(return_value,inx,chars[inx]);
}
break;
case 3:
if (chars[inx] != 0) {
retstr[retlen++] = inx;
}
break;
case 4:
if (chars[inx] == 0) {
retstr[retlen++] = inx;
}
break;
}
}
if (mymode >= 3 && mymode <= 4) {
RETURN_STRINGL(retstr,retlen,1);
}
}
/* }}} */
static void php_strnatcmp(INTERNAL_FUNCTION_PARAMETERS, int fold_case)
{
zval **s1, **s2;
if (ARG_COUNT(ht)!=2 || zend_get_parameters_ex(2, &s1, &s2) == FAILURE) {
WRONG_PARAM_COUNT;
}
convert_to_string_ex(s1);
convert_to_string_ex(s2);
RETURN_LONG(strnatcmp_ex((*s1)->value.str.val, (*s1)->value.str.len,
(*s2)->value.str.val, (*s2)->value.str.len,
fold_case));
}
/* {{{ proto int strnatcmp(string s1, string s2)
Returns the result of string comparison using 'natural' algorithm */
PHP_FUNCTION(strnatcmp)
{
php_strnatcmp(INTERNAL_FUNCTION_PARAM_PASSTHRU, 0);
}
/* }}} */
/* {{{ proto int strnatcasecmp(string s1, string s2)
Returns the result of case-insensitive string comparison using 'natural' algorithm */
PHP_FUNCTION(strnatcasecmp)
{
php_strnatcmp(INTERNAL_FUNCTION_PARAM_PASSTHRU, 1);
}
/* }}} */
/* {{{ proto int substr_count(string haystack, string needle)
Returns the number of times a substring occurs in the string. */
PHP_FUNCTION(substr_count)
{
zval **haystack, **needle;
int i, length, count = 0;
char *p, *endp, cmp;
if (ARG_COUNT(ht) != 2 || zend_get_parameters_ex(2, &haystack, &needle) == FAILURE) {
WRONG_PARAM_COUNT;
}
convert_to_string_ex(haystack);
convert_to_string_ex(needle);
if ((*needle)->value.str.len == 0) {
php_error(E_WARNING, "Empty substring");
RETURN_FALSE;
} else if ((*needle)->value.str.len == 1) {
/* Special optimized case to avoid calls to php_memnstr(). */
for (i = 0, p = (*haystack)->value.str.val,
length = (*haystack)->value.str.len, cmp = (*needle)->value.str.val[0];
i < length; i++) {
if (p[i] == cmp) {
count++;
}
}
} else {
p = (*haystack)->value.str.val;
endp = p + (*haystack)->value.str.len;
while (p <= endp) {
if( (p = php_memnstr(p, (*needle)->value.str.val, (*needle)->value.str.len, endp)) != NULL ) {
p += (*needle)->value.str.len;
count++;
} else {
break;
}
}
}
RETURN_LONG(count);
}
/* }}} */
Reference in New Issue View Git Blame Copy Permalink