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string.c
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string.c
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/*
+----------------------------------------------------------------------+
| PHP version 4.0 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2001 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: Rasmus Lerdorf <rasmus@php.net> |
| 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
#ifdef HAVE_LANGINFO_H
# include <langinfo.h>
#endif
#include "scanf.h"
#include "zend_API.h"
#include "zend_execute.h"
#include "php_globals.h"
#include "basic_functions.h"
#include "php_smart_str.h"
#ifdef ZTS
#include "TSRM.h"
#endif
#define STR_PAD_LEFT 0
#define STR_PAD_RIGHT 1
#define STR_PAD_BOTH 2
#define PHP_PATHINFO_DIRNAME 0
#define PHP_PATHINFO_BASENAME 1
#define PHP_PATHINFO_EXTENSION 2
/* {{{ register_string_constants
*/
void register_string_constants(INIT_FUNC_ARGS)
{
REGISTER_LONG_CONSTANT("STR_PAD_LEFT", STR_PAD_LEFT, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("STR_PAD_RIGHT", STR_PAD_RIGHT, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("STR_PAD_BOTH", STR_PAD_BOTH, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PATHINFO_DIRNAME", PHP_PATHINFO_DIRNAME, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PATHINFO_BASENAME", PHP_PATHINFO_BASENAME, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PATHINFO_EXTENSION", PHP_PATHINFO_EXTENSION, CONST_CS | CONST_PERSISTENT);
#ifdef HAVE_LOCALECONV
/* If last members of struct lconv equal CHAR_MAX, no grouping is done */
/* This is bad, but since we are going to be hardcoding in the POSIX stuff anyway... */
# ifndef HAVE_LIMITS_H
# define CHAR_MAX 127
# endif
REGISTER_LONG_CONSTANT("CHAR_MAX", CHAR_MAX, CONST_CS | CONST_PERSISTENT);
#endif
#ifdef HAVE_LOCALE_H
REGISTER_LONG_CONSTANT("LC_CTYPE", LC_CTYPE, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("LC_NUMERIC", LC_NUMERIC, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("LC_TIME", LC_TIME, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("LC_COLLATE", LC_COLLATE, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("LC_MONETARY", LC_MONETARY, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("LC_ALL", LC_ALL, CONST_CS | CONST_PERSISTENT);
# ifdef LC_MESSAGES
REGISTER_LONG_CONSTANT("LC_MESSAGES", LC_MESSAGES, CONST_CS | CONST_PERSISTENT);
# endif
#endif
}
/* }}} */
int php_tag_find(char *tag, int len, char *set);
/* this is read-only, so it's ok */
static char hexconvtab[] = "0123456789abcdef";
/* localeconv mutex */
#ifdef ZTS
static MUTEX_T locale_mutex = NULL;
#endif
/* {{{ php_bin2hex
*/
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) + 1);
if(!result) {
return result;
}
for(i = j = 0; i < oldlen; i++) {
result[j++] = hexconvtab[old[i] >> 4];
result[j++] = hexconvtab[old[i] & 15];
}
result[j] = '\0';
if(newlen) *newlen = oldlen * 2 * sizeof(char);
return result;
}
/* }}} */
#ifdef HAVE_LOCALECONV
/* {{{ localeconv_r
* glibc's localeconv is not reentrant, so lets make it so ... sorta */
struct lconv *localeconv_r(struct lconv *out)
{
struct lconv *res;
# ifdef ZTS
tsrm_mutex_lock( locale_mutex );
# endif
/* localeconv doesn't return an error condition */
res = localeconv();
*out = *res;
# ifdef ZTS
tsrm_mutex_unlock( locale_mutex );
# endif
return out;
}
/* }}} */
# ifdef ZTS
/* {{{ PHP_MINIT_FUNCTION
*/
PHP_MINIT_FUNCTION(localeconv)
{
locale_mutex = tsrm_mutex_alloc();
return SUCCESS;
}
/* }}} */
/* {{{ PHP_MSHUTDOWN_FUNCTION
*/
PHP_MSHUTDOWN_FUNCTION(localeconv)
{
tsrm_mutex_free( locale_mutex );
locale_mutex = NULL;
return SUCCESS;
}
/* }}} */
# endif
#endif
/* {{{ proto string bin2hex(string data)
Converts the binary representation of data to hex */
PHP_FUNCTION(bin2hex)
{
zval **data;
char *result;
size_t newlen;
if(ZEND_NUM_ARGS() != 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 (ZEND_NUM_ARGS()!=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 (ZEND_NUM_ARGS()!=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));
}
/* }}} */
/* {{{ PHP_MINIT_FUNCTION(nl_langinfo) */
#if HAVE_NL_LANGINFO
PHP_MINIT_FUNCTION(nl_langinfo)
{
#define REGISTER_NL_LANGINFO_CONSTANT(x) REGISTER_LONG_CONSTANT(#x, x, CONST_CS | CONST_PERSISTENT)
#ifdef ABDAY_1
REGISTER_NL_LANGINFO_CONSTANT(ABDAY_1);
REGISTER_NL_LANGINFO_CONSTANT(ABDAY_2);
REGISTER_NL_LANGINFO_CONSTANT(ABDAY_3);
REGISTER_NL_LANGINFO_CONSTANT(ABDAY_4);
REGISTER_NL_LANGINFO_CONSTANT(ABDAY_5);
REGISTER_NL_LANGINFO_CONSTANT(ABDAY_6);
REGISTER_NL_LANGINFO_CONSTANT(ABDAY_7);
#endif
#ifdef DAY_1
REGISTER_NL_LANGINFO_CONSTANT(DAY_1);
REGISTER_NL_LANGINFO_CONSTANT(DAY_2);
REGISTER_NL_LANGINFO_CONSTANT(DAY_3);
REGISTER_NL_LANGINFO_CONSTANT(DAY_4);
REGISTER_NL_LANGINFO_CONSTANT(DAY_5);
REGISTER_NL_LANGINFO_CONSTANT(DAY_6);
REGISTER_NL_LANGINFO_CONSTANT(DAY_7);
#endif
#ifdef ABMON_1
REGISTER_NL_LANGINFO_CONSTANT(ABMON_1);
REGISTER_NL_LANGINFO_CONSTANT(ABMON_2);
REGISTER_NL_LANGINFO_CONSTANT(ABMON_3);
REGISTER_NL_LANGINFO_CONSTANT(ABMON_4);
REGISTER_NL_LANGINFO_CONSTANT(ABMON_5);
REGISTER_NL_LANGINFO_CONSTANT(ABMON_6);
REGISTER_NL_LANGINFO_CONSTANT(ABMON_7);
REGISTER_NL_LANGINFO_CONSTANT(ABMON_8);
REGISTER_NL_LANGINFO_CONSTANT(ABMON_9);
REGISTER_NL_LANGINFO_CONSTANT(ABMON_10);
REGISTER_NL_LANGINFO_CONSTANT(ABMON_11);
REGISTER_NL_LANGINFO_CONSTANT(ABMON_12);
#endif
#ifdef MON_1
REGISTER_NL_LANGINFO_CONSTANT(MON_1);
REGISTER_NL_LANGINFO_CONSTANT(MON_2);
REGISTER_NL_LANGINFO_CONSTANT(MON_3);
REGISTER_NL_LANGINFO_CONSTANT(MON_4);
REGISTER_NL_LANGINFO_CONSTANT(MON_5);
REGISTER_NL_LANGINFO_CONSTANT(MON_6);
REGISTER_NL_LANGINFO_CONSTANT(MON_7);
REGISTER_NL_LANGINFO_CONSTANT(MON_8);
REGISTER_NL_LANGINFO_CONSTANT(MON_9);
REGISTER_NL_LANGINFO_CONSTANT(MON_10);
REGISTER_NL_LANGINFO_CONSTANT(MON_11);
REGISTER_NL_LANGINFO_CONSTANT(MON_12);
#endif
#ifdef AM_STR
REGISTER_NL_LANGINFO_CONSTANT(AM_STR);
#endif
#ifdef PM_STR
REGISTER_NL_LANGINFO_CONSTANT(PM_STR);
#endif
#ifdef D_T_FMT
REGISTER_NL_LANGINFO_CONSTANT(D_T_FMT);
#endif
#ifdef D_FMT
REGISTER_NL_LANGINFO_CONSTANT(D_FMT);
#endif
#ifdef T_FMT
REGISTER_NL_LANGINFO_CONSTANT(T_FMT);
#endif
#ifdef T_FMT_AMPM
REGISTER_NL_LANGINFO_CONSTANT(T_FMT_AMPM);
#endif
#ifdef ERA
REGISTER_NL_LANGINFO_CONSTANT(ERA);
#endif
#ifdef ERA_YEAR
REGISTER_NL_LANGINFO_CONSTANT(ERA_YEAR);
#endif
#ifdef ERA_D_T_FMT
REGISTER_NL_LANGINFO_CONSTANT(ERA_D_T_FMT);
#endif
#ifdef ERA_D_FMT
REGISTER_NL_LANGINFO_CONSTANT(ERA_D_FMT);
#endif
#ifdef ERA_T_FMT
REGISTER_NL_LANGINFO_CONSTANT(ERA_T_FMT);
#endif
#ifdef ALT_DIGITS
REGISTER_NL_LANGINFO_CONSTANT(ALT_DIGITS);
#endif
#ifdef INT_CURR_SYMBOL
REGISTER_NL_LANGINFO_CONSTANT(INT_CURR_SYMBOL);
#endif
#ifdef CURRENCY_SYMBOL
REGISTER_NL_LANGINFO_CONSTANT(CURRENCY_SYMBOL);
#endif
#ifdef CRNCYSTR
REGISTER_NL_LANGINFO_CONSTANT(CRNCYSTR);
#endif
#ifdef MON_DECIMAL_POINT
REGISTER_NL_LANGINFO_CONSTANT(MON_DECIMAL_POINT);
#endif
#ifdef MON_THOUSANDS_SEP
REGISTER_NL_LANGINFO_CONSTANT(MON_THOUSANDS_SEP);
#endif
#ifdef MON_GROUPING
REGISTER_NL_LANGINFO_CONSTANT(MON_GROUPING);
#endif
#ifdef POSITIVE_SIGN
REGISTER_NL_LANGINFO_CONSTANT(POSITIVE_SIGN);
#endif
#ifdef NEGATIVE_SIGN
REGISTER_NL_LANGINFO_CONSTANT(NEGATIVE_SIGN);
#endif
#ifdef INT_FRAC_DIGITS
REGISTER_NL_LANGINFO_CONSTANT(INT_FRAC_DIGITS);
#endif
#ifdef FRAC_DIGITS
REGISTER_NL_LANGINFO_CONSTANT(FRAC_DIGITS);
#endif
#ifdef P_CS_PRECEDES
REGISTER_NL_LANGINFO_CONSTANT(P_CS_PRECEDES);
#endif
#ifdef P_SEP_BY_SPACE
REGISTER_NL_LANGINFO_CONSTANT(P_SEP_BY_SPACE);
#endif
#ifdef N_CS_PRECEDES
REGISTER_NL_LANGINFO_CONSTANT(N_CS_PRECEDES);
#endif
#ifdef N_SEP_BY_SPACE
REGISTER_NL_LANGINFO_CONSTANT(N_SEP_BY_SPACE);
#endif
#ifdef P_SIGN_POSN
REGISTER_NL_LANGINFO_CONSTANT(P_SIGN_POSN);
#endif
#ifdef N_SIGN_POSN
REGISTER_NL_LANGINFO_CONSTANT(N_SIGN_POSN);
#endif
#ifdef DECIMAL_POINT
REGISTER_NL_LANGINFO_CONSTANT(DECIMAL_POINT);
#endif
#ifdef RADIXCHAR
REGISTER_NL_LANGINFO_CONSTANT(RADIXCHAR);
#endif
#ifdef THOUSANDS_SEP
REGISTER_NL_LANGINFO_CONSTANT(THOUSANDS_SEP);
#endif
#ifdef THOUSEP
REGISTER_NL_LANGINFO_CONSTANT(THOUSEP);
#endif
#ifdef GROUPING
REGISTER_NL_LANGINFO_CONSTANT(GROUPING);
#endif
#ifdef YESEXPR
REGISTER_NL_LANGINFO_CONSTANT(YESEXPR);
#endif
#ifdef NOEXPR
REGISTER_NL_LANGINFO_CONSTANT(NOEXPR);
#endif
#ifdef YESSTR
REGISTER_NL_LANGINFO_CONSTANT(YESSTR);
#endif
#ifdef NOSTR
REGISTER_NL_LANGINFO_CONSTANT(NOSTR);
#endif
#ifdef CODESET
REGISTER_NL_LANGINFO_CONSTANT(CODESET);
#endif
#undef REGISTER_NL_LANGINFO_CONSTANT
return SUCCESS;
}
/* }}} */
PHP_FUNCTION(nl_langinfo)
{
zval ** item;
char * value;
if (ZEND_NUM_ARGS() != 1 || zend_get_parameters_ex(1, &item) == FAILURE) {
WRONG_PARAM_COUNT;
}
convert_to_long_ex(item);
value = nl_langinfo(Z_LVAL_PP(item));
if (value == NULL) {
RETURN_FALSE;
}
else {
RETURN_STRING(value, 1);
}
}
#endif
#ifdef HAVE_STRCOLL
/* {{{ proto int strcoll(string str1, string str2)
Compare two strings using the current locale */
PHP_FUNCTION(strcoll)
{
zval **s1, **s2;
if (ZEND_NUM_ARGS()!=2 || zend_get_parameters_ex(2, &s1, &s2) == FAILURE) {
WRONG_PARAM_COUNT;
}
convert_to_string_ex(s1);
convert_to_string_ex(s2);
RETURN_LONG(strcoll((const char *)(*s1)->value.str.val, (const char *)(*s2)->value.str.val));
}
/* }}} */
#endif
/* {{{ php_charmask
* Fills a 256-byte bytemask with input. You can specify a range like 'a..z',
* it needs to be incrementing.
* Returns: FAILURE/SUCCESS wether the input was correct (i.e. no range errors)
*/
int php_charmask(unsigned char *input, int len, char *mask TSRMLS_DC)
{
unsigned char *end;
unsigned char c;
int result = SUCCESS;
memset(mask, 0, 256);
for (end=input+len; input<end; input++) {
c=*input;
if (input+3<end && input[1] == '.' && input[2] == '.'
&& input[3] >= c) {
memset(mask+c, 1, input[3] - c + 1);
input+=3;
} else if (input+1<end && input[0] == '.' && input[1] == '.') {
/* Error, try to be as helpful as possible:
(a range ending/starting with '.' won't be captured here) */
if (end-len>=input) { /* there was no 'left' char */
php_error(E_WARNING, "Invalid '..'-range passed to %s(), no character to the left of '..'", get_active_function_name(TSRMLS_C));
result = FAILURE;
continue;
}
if (input+2>=end) { /* there is no 'right' char */
php_error(E_WARNING, "Invalid '..'-range passed to %s(), no character to the right of '..'", get_active_function_name(TSRMLS_C));
result = FAILURE;
continue;
}
if (input[-1] > input[2]) { /* wrong order */
php_error(E_WARNING, "Invalid '..'-range passed to %s(), '..'-range needs to be incrementing", get_active_function_name(TSRMLS_C));
result = FAILURE;
continue;
}
/* FIXME: better error (a..b..c is the only left possibility?) */
php_error(E_WARNING, "Invalid '..'-range passed to %s()", get_active_function_name(TSRMLS_C));
result = FAILURE;
continue;
} else {
mask[c]=1;
}
}
return result;
}
/* }}} */
/* {{{ php_trim
Compatibility function, ports old-API to new one. (DEPRECATED)
*/
void php_trim(zval *str, zval *return_value, int mode TSRMLS_DC)
{
php_trim2(str, NULL, return_value, mode TSRMLS_CC);
}
/* }}} */
/* {{{ php_trim2
*/
PHPAPI void php_trim2(zval *str, zval *what, zval *return_value, int mode TSRMLS_DC)
/* mode 1 : trim left
mode 2 : trim right
mode 3 : trim left and right
what indicates which chars are to be trimmed. NULL->default (' \t\n\r\v\0')
*/
{
register int i;
int len = str->value.str.len;
int trimmed = 0;
char *c = str->value.str.val;
char mask[256];
if (what) {
php_charmask(what->value.str.val, what->value.str.len, mask TSRMLS_CC);
} else {
php_charmask(" \n\r\t\v\0", 6, mask TSRMLS_CC);
}
if (mode & 1) {
for (i = 0; i < len; i++) {
if (mask[(unsigned char)c[i]]) {
trimmed++;
} else {
break;
}
}
len -= trimmed;
c += trimmed;
}
if (mode & 2) {
for (i = len - 1; i >= 0; i--) {
if (mask[(unsigned char)c[i]]) {
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, **what;
if (ZEND_NUM_ARGS() < 1 || ZEND_NUM_ARGS() > 2)
WRONG_PARAM_COUNT;
zend_get_parameters_ex(ZEND_NUM_ARGS(), &str, &what);
convert_to_string_ex(str);
if (ZEND_NUM_ARGS() == 2)
convert_to_string_ex(str);
/* convert_to_string_ex never fails (last line: op->type = IS_STRING),
so, not checking for that. */
php_trim2(*str, ZEND_NUM_ARGS()==2?*what:NULL, return_value, 2 TSRMLS_CC);
}
/* }}} */
/* {{{ proto string trim(string str)
Strip whitespace from the beginning and end of a string */
PHP_FUNCTION(trim)
{
zval **str, **what;
if (ZEND_NUM_ARGS() < 1 || ZEND_NUM_ARGS() > 2)
WRONG_PARAM_COUNT;
zend_get_parameters_ex(ZEND_NUM_ARGS(), &str, &what);
convert_to_string_ex(str);
if (ZEND_NUM_ARGS() == 2)
convert_to_string_ex(str);
php_trim2(*str, ZEND_NUM_ARGS()==2?*what:NULL, return_value, 3 TSRMLS_CC);
}
/* }}} */
/* {{{ proto string ltrim(string str)
Strip whitespace from the beginning of a string */
PHP_FUNCTION(ltrim)
{
zval **str, **what;
if (ZEND_NUM_ARGS() < 1 || ZEND_NUM_ARGS() > 2)
WRONG_PARAM_COUNT;
zend_get_parameters_ex(ZEND_NUM_ARGS(), &str, &what);
convert_to_string_ex(str);
if (ZEND_NUM_ARGS() == 2)
convert_to_string_ex(str);
php_trim2(*str, ZEND_NUM_ARGS()==2?*what:NULL, return_value, 1 TSRMLS_CC);
}
/* }}} */
/* {{{ proto string wordwrap(string str [, int width [, string break [, int cut]]])
Wrap buffer to selected number of characters using string break char */
PHP_FUNCTION(wordwrap)
{
pval **ptext, **plinelength, **pbreakchar, **cut;
long i=0, l=0, pgr=0, linelength=0, last=0, breakcharlen, docut=0;
char *text, *breakchar, *newtext;
if (ZEND_NUM_ARGS() < 1 || ZEND_NUM_ARGS() > 4 || zend_get_parameters_ex(ZEND_NUM_ARGS(), &ptext, &plinelength, &pbreakchar, &cut) == FAILURE) {
WRONG_PARAM_COUNT;
}
convert_to_string_ex(ptext);
if (Z_STRVAL_PP(ptext) == 0)
RETVAL_FALSE;
text = (*ptext)->value.str.val;
if (ZEND_NUM_ARGS() > 1) {
convert_to_long_ex(plinelength);
linelength = (*plinelength)->value.lval;
}
else {
linelength = 75;
}
if (ZEND_NUM_ARGS() > 2) {
convert_to_string_ex(pbreakchar);
breakchar = (*pbreakchar)->value.str.val;
breakcharlen = (*pbreakchar)->value.str.len;
}
else {
breakchar = "\n";
breakcharlen = 1;
}
if (ZEND_NUM_ARGS() > 3) {
convert_to_long_ex(cut);
docut = (*cut)->value.lval;
}
/* Special case for a single-character break as it needs no
additional storage space */
if (breakcharlen == 1 && docut == 0) {
newtext = estrdup (text);
while (newtext[i] != '\0') {
/* prescan line to see if it is greater than linelength */
l = 0;
while (newtext[i+l] != breakchar[0]) {
if (newtext[i+l] == '\0') {
l--;
break;
}
l++;
}
if (l >= linelength) {
pgr = l;
l = linelength;
/* needs breaking; work backwards to find previous word */
while (l >= 0) {
if (newtext[i+l] == ' ') {
newtext[i+l] = breakchar[0];
break;
}
l--;
}
if (l == -1) {
/* couldn't break is backwards, try looking forwards */
l = linelength;
while (l <= pgr) {
if(newtext[i+l] == ' ') {
newtext[i+l] = breakchar[0];
break;
}
l++;
}
}
}
i += l+1;
}
RETVAL_STRINGL(newtext, strlen(newtext), 1);
efree(newtext);
}
else {
/* Multiple character line break */
newtext = emalloc((*ptext)->value.str.len * (breakcharlen+1)+1);
newtext[0] = '\0';
i = 0;
while (text[i] != '\0') {
/* prescan line to see if it is greater than linelength */
l = 0;
while (text[i+l] != '\0') {
if (text[i+l] == breakchar[0]) {
if (breakcharlen == 1 || strncmp(text+i+l, breakchar, breakcharlen)==0)
break;
}
l++;
}
if (l >= linelength) {
pgr = l;
l = linelength;
/* needs breaking; work backwards to find previous word */
while (l >= 0) {
if (text[i+l] == ' ') {
strncat(newtext, text+last, i+l-last);
strcat(newtext, breakchar);
last = i + l + 1;
break;
}
l--;
}
if (l == -1) {
/* couldn't break it backwards, try looking forwards */
l = linelength - 1;
while (l <= pgr) {
if (docut == 0)
{
if (text[i+l] == ' ') {
strncat(newtext, text+last, i+l-last);
strcat(newtext, breakchar);
last = i + l + 1;
break;
}
}
if (docut == 1)
{
if (text[i+l] == ' ' || l > i-last) {
strncat(newtext, text+last, i+l-last+1);
strcat(newtext, breakchar);
last = i + l + 1;
break;
}
}
l++;
}
}
i += l+1;
}
else {
i += (l ? l : 1);
}
}
if (i+l > last) {
strcat(newtext, text+last);
}
RETVAL_STRINGL(newtext, strlen(newtext), 1);
efree(newtext);
}
}
/* }}} */
/* {{{ php_explode
*/
PHPAPI void php_explode(zval *delim, zval *str, zval *return_value, int limit)
{
char *p1, *p2, *endp;
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_next_index_stringl(return_value, p1, str->value.str.len, 1);
} else {
do {
add_next_index_stringl(return_value, 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 &&
(limit == -1 || --limit > 1));
if (p1 <= endp)
add_next_index_stringl(return_value, p1, endp-p1, 1);
}
}
/* }}} */
/* {{{ proto array explode(string separator, string str [, int limit])
Split a string on string separator and return array of components */
PHP_FUNCTION(explode)
{
zval **str, **delim, **zlimit = NULL;
int limit;
switch (ZEND_NUM_ARGS()) {
case 2:
if (zend_get_parameters_ex(2, &delim, &str) == FAILURE)
WRONG_PARAM_COUNT;
limit=-1;
break;
case 3:
if (zend_get_parameters_ex(3, &delim, &str, &zlimit) == FAILURE)
WRONG_PARAM_COUNT;
convert_to_long_ex(zlimit);
limit = (*zlimit)->value.lval;
break;
default:
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;
}
if(limit==0 || limit==1) {
add_index_stringl(return_value, 0, (*str)->value.str.val, (*str)->value.str.len, 1);
} else {
php_explode(*delim, *str, return_value, limit);
}
}
/* }}} */
/* {{{ proto string join(array src, string glue)
An alias for implode */
/* }}} */
/* {{{ php_implode
*/
PHPAPI void php_implode(zval *delim, zval *arr, zval *return_value)
{
zval **tmp;
int len = 0, count = 0, target = 0;
HashPosition pos;
/* convert everything to strings, and calculate length */
zend_hash_internal_pointer_reset_ex(arr->value.ht, &pos);
while (zend_hash_get_current_data_ex(arr->value.ht, (void **) &tmp, &pos) == SUCCESS) {
convert_to_string_ex(tmp);
len += (*tmp)->value.str.len;
if (count>0) {
len += delim->value.str.len;
}
count++;
zend_hash_move_forward_ex(arr->value.ht, &pos);
}
/* 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_ex(arr->value.ht, &pos);
while (zend_hash_get_current_data_ex(arr->value.ht, (void **) &tmp, &pos) == 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_ex(arr->value.ht, &pos);
}
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 (ZEND_NUM_ARGS() != 2 || zend_get_parameters_ex(2, &arg1, &arg2) == FAILURE) {
WRONG_PARAM_COUNT;
}
if ((*arg1)->type == IS_ARRAY) {
SEPARATE_ZVAL(arg1);
arr = *arg1;
convert_to_string_ex(arg2);
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(TSRMLS_C));
return;
}
php_implode(delim, arr, return_value);
}
/* }}} */
#define STRTOK_TABLE(p) BG(strtok_table)[(unsigned char) *p]
/* {{{ proto string strtok([string str, ] string token)
Tokenize a string */
PHP_FUNCTION(strtok)
{
zval **args[2];
zval **tok, **str;
char *token;
char *token_end;
char *p;
char *pe;
int skipped = 0;
if (ZEND_NUM_ARGS() < 1 || ZEND_NUM_ARGS() > 2 ||
zend_get_parameters_array_ex(ZEND_NUM_ARGS(), args) == FAILURE)
WRONG_PARAM_COUNT;
switch (ZEND_NUM_ARGS()) {
case 1:
tok = args[0];
break;
case 2:
str = args[0];
tok = args[1];
convert_to_string_ex(str);
zval_add_ref(str);
if (BG(strtok_zval))
zval_ptr_dtor(&BG(strtok_zval));
BG(strtok_zval) = *str;
BG(strtok_last) = BG(strtok_string) = Z_STRVAL_PP(str);
BG(strtok_len) = Z_STRLEN_PP(str);
break;
}
p = BG(strtok_last); /* Where we start to search */
pe = BG(strtok_string) + BG(strtok_len);
if (!p || p >= pe)
RETURN_FALSE;
convert_to_string_ex(tok);
token = Z_STRVAL_PP(tok);
token_end = token + Z_STRLEN_PP(tok);
while (token < token_end)
STRTOK_TABLE(token++) = 1;
/* Skip leading delimiters */
while (STRTOK_TABLE(p))
{
if (++p >= pe) {
/* no other chars left */
BG(strtok_last) = NULL;
RETVAL_FALSE;
goto restore;
}
skipped++;
}
/* We know at this place that *p is no delimiter, so skip it */
while (++p < pe)
if (STRTOK_TABLE(p))
goto return_token;
if (p - BG(strtok_last)) {
return_token:
RETVAL_STRINGL(BG(strtok_last) + skipped, (p - BG(strtok_last)) - skipped, 1);
BG(strtok_last) = p + 1;
} else {
RETVAL_FALSE;
BG(strtok_last) = NULL;
}
/* Restore table -- usually faster then memset'ing the table
on every invocation */
restore:
token = Z_STRVAL_PP(tok);
while (token < token_end)
STRTOK_TABLE(token++) = 0;
}
/* }}} */
/* {{{ php_strtoupper
*/
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);
}
/* }}} */