1 /* 2 * Copyright (C) 2006, 2007 Apple Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26 #include "config.h" 27 #include "JSStringRef.h" 28 29 #include "InitializeThreading.h" 30 #include "OpaqueJSString.h" 31 #include <wtf/unicode/UTF8.h> 32 33 using namespace JSC; 34 using namespace WTF::Unicode; 35 JSStringCreateWithCharacters(const JSChar * chars,size_t numChars)36 JSStringRef JSStringCreateWithCharacters(const JSChar* chars, size_t numChars) 37 { 38 initializeThreading(); 39 return OpaqueJSString::create(chars, numChars).leakRef(); 40 } 41 JSStringCreateWithUTF8CString(const char * string)42 JSStringRef JSStringCreateWithUTF8CString(const char* string) 43 { 44 initializeThreading(); 45 if (string) { 46 size_t length = strlen(string); 47 Vector<UChar, 1024> buffer(length); 48 UChar* p = buffer.data(); 49 if (conversionOK == convertUTF8ToUTF16(&string, string + length, &p, p + length)) 50 return OpaqueJSString::create(buffer.data(), p - buffer.data()).leakRef(); 51 } 52 53 // Null string. 54 return OpaqueJSString::create().leakRef(); 55 } 56 JSStringRetain(JSStringRef string)57 JSStringRef JSStringRetain(JSStringRef string) 58 { 59 string->ref(); 60 return string; 61 } 62 JSStringRelease(JSStringRef string)63 void JSStringRelease(JSStringRef string) 64 { 65 string->deref(); 66 } 67 JSStringGetLength(JSStringRef string)68 size_t JSStringGetLength(JSStringRef string) 69 { 70 return string->length(); 71 } 72 JSStringGetCharactersPtr(JSStringRef string)73 const JSChar* JSStringGetCharactersPtr(JSStringRef string) 74 { 75 return string->characters(); 76 } 77 JSStringGetMaximumUTF8CStringSize(JSStringRef string)78 size_t JSStringGetMaximumUTF8CStringSize(JSStringRef string) 79 { 80 // Any UTF8 character > 3 bytes encodes as a UTF16 surrogate pair. 81 return string->length() * 3 + 1; // + 1 for terminating '\0' 82 } 83 JSStringGetUTF8CString(JSStringRef string,char * buffer,size_t bufferSize)84 size_t JSStringGetUTF8CString(JSStringRef string, char* buffer, size_t bufferSize) 85 { 86 if (!bufferSize) 87 return 0; 88 89 char* p = buffer; 90 const UChar* d = string->characters(); 91 ConversionResult result = convertUTF16ToUTF8(&d, d + string->length(), &p, p + bufferSize - 1, true); 92 *p++ = '\0'; 93 if (result != conversionOK && result != targetExhausted) 94 return 0; 95 96 return p - buffer; 97 } 98 JSStringIsEqual(JSStringRef a,JSStringRef b)99 bool JSStringIsEqual(JSStringRef a, JSStringRef b) 100 { 101 unsigned len = a->length(); 102 return len == b->length() && 0 == memcmp(a->characters(), b->characters(), len * sizeof(UChar)); 103 } 104 JSStringIsEqualToUTF8CString(JSStringRef a,const char * b)105 bool JSStringIsEqualToUTF8CString(JSStringRef a, const char* b) 106 { 107 JSStringRef bBuf = JSStringCreateWithUTF8CString(b); 108 bool result = JSStringIsEqual(a, bBuf); 109 JSStringRelease(bBuf); 110 111 return result; 112 } 113