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Added common handler for strspn() and strcspn(). Almost of the code is

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identical. Modified to accept up to 4 params. Last 2 optional start & len.
They are analogic to start & len of substr(). So the behavior when start &
len are used is like
strspn(substr($s,$start,$len),$good_chars) and
strcspn(substr($s,$start,$len), $bad_chars)
This commit is contained in:
Andrey Hristov 2002-09-25 19:06:29 +00:00
parent 21adf62204
commit f80a817f7c
1 changed files with 61 additions and 26 deletions
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87
ext/standard/string.c
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@ -54,6 +54,9 @@
#define PHP_PATHINFO_EXTENSION 4
#define PHP_PATHINFO_ALL (PHP_PATHINFO_DIRNAME | PHP_PATHINFO_BASENAME | PHP_PATHINFO_EXTENSION)
#define STR_STRSPN 0
#define STR_STRCSPN 1
/* {{{ register_string_constants
*/
void register_string_constants(INIT_FUNC_ARGS)
@ -195,39 +198,71 @@ PHP_FUNCTION(bin2hex)
}
/* }}} */
/* {{{ proto int strspn(string str, string mask)
Finds length of initial segment consisting entirely of characters found in mask */
static void php_spn_common_handler(INTERNAL_FUNCTION_PARAMETERS, int behavior)
{
char *s11, *s22;
long len1, len2, start, len;
start = 0;
len = 0;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "ss|ll", &s11, &len1,
&s22, &len2, &start, &len) == FAILURE) {
return;
}
if (ZEND_NUM_ARGS() < 4) {
len = len1;
}
/* look at substr() function for more information */
if (start < 0) {
start += len1;
if (start < 0) {
start = 0;
}
} else if (start > len1) {
RETURN_FALSE;
}
if (len < 0) {
len += (len1 - start);
if (len < 0) {
len = 0;
}
}
if ((start + len) > len1) {
len = len1 - start;
}
if (behavior == STR_STRSPN) {
RETURN_LONG(php_strspn(s11 + start /*str1_start*/,
s22 /*str2_start*/,
s11 + start + len /*str1_end*/,
s22 + len2 /*str2_end*/));
} else if (behavior == STR_STRCSPN) {
RETURN_LONG(php_strcspn(s11 + start /*str1_start*/,
s22 /*str2_start*/,
s11 + start + len /*str1_end*/,
s22 + len2 /*str2_end*/));
}
}
/* {{{ proto int strspn(string str, string mask [, start [, len]])
Finds length of initial segment consisting entirely of characters found in mask. If start or/and length is provided works like strspn(substr($s,$start,$len),$good_chars) */
PHP_FUNCTION(strspn)
{
zval **s1, **s2;
if (ZEND_NUM_ARGS()!=2 || zend_get_parameters_ex(2, &s1, &s2) == FAILURE) {
WRONG_PARAM_COUNT;
}
convert_to_string_ex(s1);
convert_to_string_ex(s2);
RETURN_LONG(php_strspn(Z_STRVAL_PP(s1), Z_STRVAL_PP(s2),
Z_STRVAL_PP(s1) + Z_STRLEN_PP(s1),
Z_STRVAL_PP(s2) + Z_STRLEN_PP(s2)));
php_spn_common_handler(INTERNAL_FUNCTION_PARAM_PASSTHRU, STR_STRSPN);
}
/* }}} */
/* {{{ proto int strcspn(string str, string mask)
Finds length of initial segment consisting entirely of characters not found in mask */
/* {{{ proto int strcspn(string str, string mask [, start [, len]])
Finds length of initial segment consisting entirely of characters not found in mask. If start or/and length is provide works like strcspn(substr($s,$start,$len),$bad_chars) */
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(Z_STRVAL_PP(s1), Z_STRVAL_PP(s2),
Z_STRVAL_PP(s1) + Z_STRLEN_PP(s1),
Z_STRVAL_PP(s2) + Z_STRLEN_PP(s2)));
php_spn_common_handler(INTERNAL_FUNCTION_PARAM_PASSTHRU, STR_STRCSPN);
}
/* }}} */