JavaScriptCore-7601.1.46.3.tar.gz

[apple/javascriptcore.git] / API / JSStringRef.cpp

diff --git a/API/JSStringRef.cpp b/API/JSStringRef.cpp
index ea31da66bb940d7edf5639fb21c22ad4bd55c0bd..c9b380ce654159d3cd11ebe259046bc691ed0ffa 100644 (file)
--- a/API/JSStringRef.cpp
+++ b/API/JSStringRef.cpp
@@ -10,10 +10,10 @@
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  *
- * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
@@ -25,6 +25,7 @@
 
 #include "config.h"
 #include "JSStringRef.h"
+#include "JSStringRefPrivate.h"
 
 #include "InitializeThreading.h"
 #include "OpaqueJSString.h"
@@ -36,7 +37,7 @@ using namespace WTF::Unicode;
 JSStringRef JSStringCreateWithCharacters(const JSChar* chars, size_t numChars)
 {
     initializeThreading();
-    return OpaqueJSString::create(chars, numChars).leakRef();
+    return &OpaqueJSString::create(chars, numChars).leakRef();
 }
 
 JSStringRef JSStringCreateWithUTF8CString(const char* string)
@@ -46,12 +47,22 @@ JSStringRef JSStringCreateWithUTF8CString(const char* string)
         size_t length = strlen(string);
         Vector<UChar, 1024> buffer(length);
         UChar* p = buffer.data();
-        if (conversionOK == convertUTF8ToUTF16(&string, string + length, &p, p + length))
-            return OpaqueJSString::create(buffer.data(), p - buffer.data()).leakRef();
+        bool sourceIsAllASCII;
+        const LChar* stringStart = reinterpret_cast<const LChar*>(string);
+        if (conversionOK == convertUTF8ToUTF16(&string, string + length, &p, p + length, &sourceIsAllASCII)) {
+            if (sourceIsAllASCII)
+                return &OpaqueJSString::create(stringStart, length).leakRef();
+            return &OpaqueJSString::create(buffer.data(), p - buffer.data()).leakRef();
+        }
     }
 
-    // Null string.
-    return OpaqueJSString::create().leakRef();
+    return &OpaqueJSString::create().leakRef();
+}
+
+JSStringRef JSStringCreateWithCharactersNoCopy(const JSChar* chars, size_t numChars)
+{
+    initializeThreading();
+    return OpaqueJSString::create(StringImpl::createWithoutCopying(chars, numChars)).leakRef();
 }
 
 JSStringRef JSStringRetain(JSStringRef string)
@@ -67,11 +78,15 @@ void JSStringRelease(JSStringRef string)
 
 size_t JSStringGetLength(JSStringRef string)
 {
+    if (!string)
+        return 0;
     return string->length();
 }
 
 const JSChar* JSStringGetCharactersPtr(JSStringRef string)
 {
+    if (!string)
+        return nullptr;
     return string->characters();
 }
 
@@ -83,23 +98,29 @@ size_t JSStringGetMaximumUTF8CStringSize(JSStringRef string)
 
 size_t JSStringGetUTF8CString(JSStringRef string, char* buffer, size_t bufferSize)
 {
-    if (!bufferSize)
+    if (!string || !buffer || !bufferSize)
         return 0;
 
-    char* p = buffer;
-    const UChar* d = string->characters();
-    ConversionResult result = convertUTF16ToUTF8(&d, d + string->length(), &p, p + bufferSize - 1, true);
-    *p++ = '\0';
+    char* destination = buffer;
+    ConversionResult result;
+    if (string->is8Bit()) {
+        const LChar* source = string->characters8();
+        result = convertLatin1ToUTF8(&source, source + string->length(), &destination, destination + bufferSize - 1);
+    } else {
+        const UChar* source = string->characters16();
+        result = convertUTF16ToUTF8(&source, source + string->length(), &destination, destination + bufferSize - 1, true);
+    }
+
+    *destination++ = '\0';
     if (result != conversionOK && result != targetExhausted)
         return 0;
 
-    return p - buffer;
+    return destination - buffer;
 }
 
 bool JSStringIsEqual(JSStringRef a, JSStringRef b)
 {
-    unsigned len = a->length();
-    return len == b->length() && 0 == memcmp(a->characters(), b->characters(), len * sizeof(UChar));
+    return OpaqueJSString::equal(a, b);
 }
 
 bool JSStringIsEqualToUTF8CString(JSStringRef a, const char* b)