From: Andrei Zmievski <andrei@php.net>
Date: Tue, 23 Aug 2005 22:05:22 +0000 (+0000)
Subject: Implement Unicode support for strncasecmp().
X-Git-Tag: PRE_NEW_OCI8_EXTENSION~109
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=ec65bc10398e5e7b81d8d6de459d889730193d31;p=php

Implement Unicode support for strncasecmp().
---

diff --git a/Zend/zend_builtin_functions.c b/Zend/zend_builtin_functions.c
index 936dc5de11..38c22ea338 100644
--- a/Zend/zend_builtin_functions.c
+++ b/Zend/zend_builtin_functions.c
@@ -378,7 +378,7 @@ ZEND_FUNCTION(strncasecmp)
 		return;
 	}
 	if (s1_type == IS_UNICODE) {
-		RETURN_LONG(zend_u_binary_strcasecmp(s1, MIN(s1_len, len), s2, MIN(s2_len, len)));
+		RETURN_LONG(zend_u_binary_strncasecmp(s1, s1_len, s2, s2_len, len));
 	} else {
 		RETURN_LONG(zend_binary_strcasecmp(s1, MIN(s1_len, len), s2, MIN(s2_len, len)));
 	}
diff --git a/Zend/zend_operators.c b/Zend/zend_operators.c
index da2c22f993..5998453e5f 100644
--- a/Zend/zend_operators.c
+++ b/Zend/zend_operators.c
@@ -2258,6 +2258,7 @@ ZEND_API int zend_binary_strcasecmp(char *s1, uint len1, char *s2, uint len2)
 	return len1 - len2;
 }
 
+
 ZEND_API int zend_u_binary_strcasecmp(UChar *s1, int32_t len1, UChar *s2, int32_t len2)
 {
 	UErrorCode status = U_ZERO_ERROR;
@@ -2265,6 +2266,7 @@ ZEND_API int zend_u_binary_strcasecmp(UChar *s1, int32_t len1, UChar *s2, int32_
 	return ZEND_NORMALIZE_BOOL(result);
 }
 
+
 ZEND_API int zend_binary_strncasecmp(char *s1, uint len1, char *s2, uint len2, uint length)
 {
 	int len;
@@ -2284,6 +2286,24 @@ ZEND_API int zend_binary_strncasecmp(char *s1, uint len1, char *s2, uint len2, u
 }
 
 
+/*
+ * Because we do not know UChar offsets for the passed-in limit of the number of
+ * codepoints to compare, we take a hit upfront by iterating over both strings
+ * until we find them. Then we can simply use u_strCaseCompare().
+ */
+ZEND_API int zend_u_binary_strncasecmp(UChar *s1, int32_t len1, UChar *s2, int32_t len2, uint length)
+{
+	UErrorCode status = U_ZERO_ERROR;
+	int32_t off1 = 0, off2 = 0;
+	int32_t result;
+
+	U16_FWD_N(s1, off1, len1, length);
+	U16_FWD_N(s2, off2, len2, length);
+	result = u_strCaseCompare(s1, off1, s2, off2, U_COMPARE_CODE_POINT_ORDER, &status);
+	return ZEND_NORMALIZE_BOOL(result);
+}
+
+
 ZEND_API int zend_binary_zval_strcmp(zval *s1, zval *s2)
 {
 	return zend_binary_strcmp(s1->value.str.val, s1->value.str.len, s2->value.str.val, s2->value.str.len);
diff --git a/Zend/zend_operators.h b/Zend/zend_operators.h
index e0d6ec11f7..73b89bf319 100644
--- a/Zend/zend_operators.h
+++ b/Zend/zend_operators.h
@@ -290,6 +290,7 @@ ZEND_API int zend_u_binary_zval_strcmp(zval *s1, zval *s2);
 ZEND_API int zend_u_binary_strcmp(UChar *s1, int32_t len1, UChar *s2, int32_t len2);
 ZEND_API int zend_u_binary_strncmp(UChar *s1, int32_t len1, UChar *s2, int32_t len2, uint length);
 ZEND_API int zend_u_binary_strcasecmp(UChar *s1, int32_t len1, UChar *s2, int32_t len2);
+ZEND_API int zend_u_binary_strncasecmp(UChar *s1, int32_t len1, UChar *s2, int32_t len2, uint length);
 
 ZEND_API void zendi_smart_strcmp(zval *result, zval *s1, zval *s2);
 ZEND_API void zendi_u_smart_strcmp(zval *result, zval *s1, zval *s2);