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- Unicode impl of stristr()

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This commit is contained in:
Rolland Santimano 2005-10-20 19:25:54 +00:00
parent 37015ffcfa
commit 5ca019aad3
2 changed files with 113 additions and 34 deletions
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1
ext/standard/php_string.h
View File

@ -130,6 +130,7 @@ PHPAPI void php_u_stripslashes(UChar *str, int32_t *len TSRMLS_DC);
PHPAPI void php_stripcslashes(char *str, int *len);
PHPAPI void php_basename(char *s, size_t len, char *suffix, size_t sufflen, char **p_ret, size_t *p_len TSRMLS_DC);
PHPAPI size_t php_dirname(char *str, size_t len);
PHPAPI UChar *php_u_stristr(UChar *s, UChar *t, int32_t s_len, int32_t t_len);
PHPAPI char *php_stristr(unsigned char *s, unsigned char *t, size_t s_len, size_t t_len);
PHPAPI char *php_str_to_str_ex(char *haystack, int length, char *needle,
int needle_len, char *str, int str_len, int *_new_length, int case_sensitivity, int *replace_count);

146
ext/standard/string.c
View File

@ -1915,6 +1915,42 @@ PHP_FUNCTION(pathinfo)
}
/* }}} */
/* {{{ php_u_stristr
Unicode version of case insensitve strstr */
PHPAPI UChar *php_u_stristr(UChar *s, UChar *t, int32_t s_len, int32_t t_len)
{
int32_t i,j, last;
UChar32 ch1, ch2;
/* Have to do this by hand since lower-casing can change lengths
by changing codepoints, and an offset within the lower-case &
upper-case strings might be different codepoints
*/
i = 0;
while (i <= (s_len-t_len)) {
last = i;
U16_NEXT(s, i, s_len, ch1);
U16_GET(t, 0, 0, t_len, ch2);
if (u_tolower(ch1) == u_tolower(ch2)) {
j = 0;
U16_FWD_1(t, j, t_len);
while (j < t_len) {
U16_NEXT(s, i, s_len, ch1);
U16_NEXT(t, j, t_len, ch2);
if (u_tolower(ch1) != u_tolower(ch2)) {
U16_BACK_1(s, 0, i);
break;
}
}
if (u_tolower(ch1) == u_tolower(ch2)) {
return s+last;
}
}
}
return NULL;
}
/* }}} */
/* {{{ php_stristr
case insensitve strstr */
PHPAPI char *php_stristr(unsigned char *s, unsigned char *t, size_t s_len, size_t t_len)
@ -2005,61 +2041,103 @@ PHPAPI size_t php_strcspn(char *s1, char *s2, char *s1_end, char *s2_end)
Finds first occurrence of a string within another, case insensitive */
PHP_FUNCTION(stristr)
{
char *haystack;
long haystack_len;
zval *needle;
zval *haystack, *needle;
zend_bool part = 0;
char *found = NULL;
int found_offset;
char *haystack_orig;
zend_uchar str_type;
char needle_char[2];
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "sz|b", &haystack, &haystack_len, &needle, &part) == FAILURE) {
UChar u_needle_char[3];
int32_t needle_len;
char *haystack_copy;
void *target;
void *found = NULL;
int found_offset;
void *start, *end;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "zz|b", &haystack, &needle, &part) == FAILURE) {
return;
}
SEPARATE_ZVAL(&haystack);
SEPARATE_ZVAL(&needle);
if (Z_TYPE_P(haystack) != IS_UNICODE && Z_TYPE_P(haystack) != IS_BINARY && Z_TYPE_P(haystack) != IS_STRING) {
convert_to_text(haystack);
}
haystack_orig = estrndup(haystack, haystack_len);
if (Z_TYPE_P(needle) == IS_STRING) {
if (!Z_STRLEN_P(needle)) {
if (Z_TYPE_P(needle) == IS_UNICODE || Z_TYPE_P(needle) == IS_BINARY || Z_TYPE_P(needle) == IS_STRING) {
if (!Z_UNILEN_P(needle)) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Empty delimiter.");
efree(haystack_orig);
RETURN_FALSE;
}
found = php_stristr(haystack,
Z_STRVAL_P(needle),
haystack_len,
Z_STRLEN_P(needle));
if (Z_TYPE_P(haystack) != Z_TYPE_P(needle)) {
str_type = zend_get_unified_string_type(2 TSRMLS_CC, Z_TYPE_P(haystack), Z_TYPE_P(needle));
if (str_type == (zend_uchar)-1) {
convert_to_explicit_type(haystack, IS_BINARY);
convert_to_explicit_type(needle, IS_BINARY);
} else {
convert_to_explicit_type(haystack, str_type);
convert_to_explicit_type(needle, str_type);
}
}
target = Z_UNIVAL_P(needle);
needle_len = Z_UNILEN_P(needle);
} else {
convert_to_long_ex(&needle);
needle_char[0] = (char) Z_LVAL_P(needle);
needle_char[1] = 0;
needle_len = 0;
if (Z_TYPE_P(haystack) == IS_UNICODE) {
if (Z_LVAL_P(needle) < 0 || Z_LVAL_P(needle) > 0x10FFFF) {
php_error(E_WARNING, "Needle argument codepoint value out of range (0 - 0x10FFFF)");
RETURN_FALSE;
}
if (U_IS_BMP(Z_LVAL_P(needle))) {
u_needle_char[needle_len++] = (UChar)Z_LVAL_P(needle);
u_needle_char[needle_len] = 0;
} else {
u_needle_char[needle_len++] = (UChar)U16_LEAD(Z_LVAL_P(needle));
u_needle_char[needle_len++] = (UChar)U16_TRAIL(Z_LVAL_P(needle));
u_needle_char[needle_len] = 0;
}
target = u_needle_char;
} else {
needle_char[needle_len++] = (char)Z_LVAL_P(needle);
needle_char[needle_len] = 0;
target = needle_char;
}
}
found = php_stristr(haystack,
needle_char,
haystack_len,
1);
if (needle_len > Z_UNILEN_P(haystack)) {
RETURN_FALSE;
}
if (Z_TYPE_P(haystack) == IS_UNICODE) {
found = php_u_stristr(Z_USTRVAL_P(haystack), (UChar *)target,
Z_USTRLEN_P(haystack), needle_len);
} else {
haystack_copy = estrndup(Z_STRVAL_P(haystack), Z_STRLEN_P(haystack));
found = php_stristr(Z_STRVAL_P(haystack), (char *)target,
Z_STRLEN_P(haystack), needle_len);
}
if (found) {
found_offset = found - haystack;
if (part) {
char *ret;
ret = emalloc(found_offset + 1);
strncpy(ret, haystack_orig, found_offset);
ret[found_offset] = '\0';
RETVAL_STRINGL(ret , found_offset, 0);
if (Z_TYPE_P(haystack) == IS_UNICODE) {
start = part ? Z_USTRVAL_P(haystack) : found;
end = part ? found : (Z_USTRVAL_P(haystack) + Z_USTRLEN_P(haystack));
RETVAL_UNICODEL((UChar *)start, (UChar *)end-(UChar *)start, 1);
} else {
RETVAL_STRINGL(haystack_orig + found_offset, haystack_len - found_offset, 1);
found_offset = (char *)found - Z_STRVAL_P(haystack);
start = part ? haystack_copy : haystack_copy + found_offset;
end = part ? haystack_copy + found_offset : (haystack_copy + Z_STRLEN_P(haystack));
if (Z_TYPE_P(haystack) == IS_BINARY) {
RETVAL_BINARYL((char *)start, (char *)end-(char *)start, 1);
} else {
RETVAL_STRINGL((char *)start, (char *)end-(char *)start, 1);
}
}
} else {
RETVAL_FALSE;
}
efree(haystack_orig);
if (Z_TYPE_P(haystack) != IS_UNICODE) {
efree(haystack_copy);
}
}
/* }}} */