Index: base/utf_string_conversions.cc |
=================================================================== |
--- base/utf_string_conversions.cc (revision 27937) |
+++ base/utf_string_conversions.cc (working copy) |
@@ -2,17 +2,14 @@ |
// Use of this source code is governed by a BSD-style license that can be |
// found in the LICENSE file. |
-#include "base/i18n/string_conversions.h" |
+#include "base/utf_string_conversions.h" |
#include <vector> |
#include "base/basictypes.h" |
#include "base/logging.h" |
#include "base/string_util.h" |
-#include "unicode/ucnv.h" |
-#include "unicode/ucnv_cb.h" |
-#include "unicode/ucnv_err.h" |
-#include "unicode/ustring.h" |
+#include "base/third_party/icu/icu_utf.h" |
namespace { |
@@ -24,64 +21,6 @@ |
(code_point >= 0xE000u && code_point <= 0x10FFFFu); |
} |
-// ToUnicodeCallbackSubstitute() is based on UCNV_TO_U_CALLBACK_SUSBSTITUTE |
-// in source/common/ucnv_err.c. |
- |
-// Copyright (c) 1995-2006 International Business Machines Corporation |
-// and others |
-// |
-// All rights reserved. |
-// |
- |
-// Permission is hereby granted, free of charge, to any person obtaining a |
-// copy of this software and associated documentation files (the "Software"), |
-// to deal in the Software without restriction, including without limitation |
-// the rights to use, copy, modify, merge, publish, distribute, and/or |
-// sell copies of the Software, and to permit persons to whom the Software |
-// is furnished to do so, provided that the above copyright notice(s) and |
-// this permission notice appear in all copies of the Software and that |
-// both the above copyright notice(s) and this permission notice appear in |
-// supporting documentation. |
-// |
-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
-// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
-// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT |
-// OF THIRD PARTY RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS |
-// INCLUDED IN THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT |
-// OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS |
-// OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE |
-// OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE |
-// OR PERFORMANCE OF THIS SOFTWARE. |
-// |
-// Except as contained in this notice, the name of a copyright holder |
-// shall not be used in advertising or otherwise to promote the sale, use |
-// or other dealings in this Software without prior written authorization |
-// of the copyright holder. |
- |
-// ___________________________________________________________________________ |
-// |
-// All trademarks and registered trademarks mentioned herein are the property |
-// of their respective owners. |
- |
-void ToUnicodeCallbackSubstitute(const void* context, |
- UConverterToUnicodeArgs *to_args, |
- const char* code_units, |
- int32_t length, |
- UConverterCallbackReason reason, |
- UErrorCode * err) { |
- static const UChar kReplacementChar = 0xFFFD; |
- if (reason <= UCNV_IRREGULAR) { |
- if (context == NULL || |
- (*(reinterpret_cast<const char*>(context)) == 'i' && |
- reason == UCNV_UNASSIGNED)) { |
- *err = U_ZERO_ERROR; |
- ucnv_cbToUWriteUChars(to_args, &kReplacementChar, 1, 0, err); |
- } |
- // else the caller must have set the error code accordingly. |
- } |
- // else ignore the reset, close and clone calls. |
-} |
- |
// ReadUnicodeCharacter -------------------------------------------------------- |
// Reads a UTF-8 stream, placing the next code point into the given output |
@@ -97,7 +36,7 @@ |
// use a signed type for code_point. But this function returns false |
// on error anyway, so code_point_out is unsigned. |
int32 code_point; |
- U8_NEXT(src, *char_index, src_len, code_point); |
+ CBU8_NEXT(src, *char_index, src_len, code_point); |
*code_point_out = static_cast<uint32>(code_point); |
// The ICU macro above moves to the next char, we want to point to the last |
@@ -111,17 +50,17 @@ |
// Reads a UTF-16 character. The usage is the same as the 8-bit version above. |
bool ReadUnicodeCharacter(const char16* src, int32 src_len, |
int32* char_index, uint32* code_point) { |
- if (U16_IS_SURROGATE(src[*char_index])) { |
- if (!U16_IS_SURROGATE_LEAD(src[*char_index]) || |
+ if (CBU16_IS_SURROGATE(src[*char_index])) { |
+ if (!CBU16_IS_SURROGATE_LEAD(src[*char_index]) || |
*char_index + 1 >= src_len || |
- !U16_IS_TRAIL(src[*char_index + 1])) { |
+ !CBU16_IS_TRAIL(src[*char_index + 1])) { |
// Invalid surrogate pair. |
return false; |
} |
// Valid surrogate pair. |
- *code_point = U16_GET_SUPPLEMENTARY(src[*char_index], |
- src[*char_index + 1]); |
+ *code_point = CBU16_GET_SUPPLEMENTARY(src[*char_index], |
+ src[*char_index + 1]); |
(*char_index)++; |
} else { |
// Not a surrogate, just one 16-bit word. |
@@ -155,9 +94,9 @@ |
// U8_APPEND_UNSAFE can append up to 4 bytes. |
int32 char_offset = static_cast<int32>(output->length()); |
- output->resize(char_offset + U8_MAX_LENGTH); |
+ output->resize(char_offset + CBU8_MAX_LENGTH); |
- U8_APPEND_UNSAFE(&(*output)[0], char_offset, code_point); |
+ CBU8_APPEND_UNSAFE(&(*output)[0], char_offset, code_point); |
// U8_APPEND_UNSAFE will advance our pointer past the inserted character, so |
// it will represent the new length of the string. |
@@ -166,14 +105,14 @@ |
// Appends the given code point as a UTF-16 character to the STL string. |
void WriteUnicodeCharacter(uint32 code_point, string16* output) { |
- if (U16_LENGTH(code_point) == 1) { |
+ if (CBU16_LENGTH(code_point) == 1) { |
// Thie code point is in the Basic Multilingual Plane (BMP). |
output->push_back(static_cast<char16>(code_point)); |
} else { |
// Non-BMP characters use a double-character encoding. |
int32 char_offset = static_cast<int32>(output->length()); |
- output->resize(char_offset + U16_MAX_LENGTH); |
- U16_APPEND_UNSAFE(&(*output)[0], char_offset, code_point); |
+ output->resize(char_offset + CBU16_MAX_LENGTH); |
+ CBU16_APPEND_UNSAFE(&(*output)[0], char_offset, code_point); |
} |
} |
@@ -211,7 +150,6 @@ |
return success; |
} |
- |
// Guesses the length of the output in UTF-8 in bytes, and reserves that amount |
// of space in the given string. We also assume that the input character types |
// are unsigned, which will be true for UTF-16 and -32 on our systems. We assume |
@@ -242,70 +180,6 @@ |
} |
} |
-bool ConvertFromUTF16(UConverter* converter, const UChar* uchar_src, |
- int uchar_len, OnStringUtilConversionError::Type on_error, |
- std::string* encoded) { |
- int encoded_max_length = UCNV_GET_MAX_BYTES_FOR_STRING(uchar_len, |
- ucnv_getMaxCharSize(converter)); |
- encoded->resize(encoded_max_length); |
- |
- UErrorCode status = U_ZERO_ERROR; |
- |
- // Setup our error handler. |
- switch (on_error) { |
- case OnStringUtilConversionError::FAIL: |
- ucnv_setFromUCallBack(converter, UCNV_FROM_U_CALLBACK_STOP, 0, |
- NULL, NULL, &status); |
- break; |
- case OnStringUtilConversionError::SKIP: |
- case OnStringUtilConversionError::SUBSTITUTE: |
- ucnv_setFromUCallBack(converter, UCNV_FROM_U_CALLBACK_SKIP, 0, |
- NULL, NULL, &status); |
- break; |
- default: |
- NOTREACHED(); |
- } |
- |
- // ucnv_fromUChars returns size not including terminating null |
- int actual_size = ucnv_fromUChars(converter, &(*encoded)[0], |
- encoded_max_length, uchar_src, uchar_len, &status); |
- encoded->resize(actual_size); |
- ucnv_close(converter); |
- if (U_SUCCESS(status)) |
- return true; |
- encoded->clear(); // Make sure the output is empty on error. |
- return false; |
-} |
- |
-// Set up our error handler for ToUTF-16 converters |
-void SetUpErrorHandlerForToUChars(OnStringUtilConversionError::Type on_error, |
- UConverter* converter, UErrorCode* status) { |
- switch (on_error) { |
- case OnStringUtilConversionError::FAIL: |
- ucnv_setToUCallBack(converter, UCNV_TO_U_CALLBACK_STOP, 0, |
- NULL, NULL, status); |
- break; |
- case OnStringUtilConversionError::SKIP: |
- ucnv_setToUCallBack(converter, UCNV_TO_U_CALLBACK_SKIP, 0, |
- NULL, NULL, status); |
- break; |
- case OnStringUtilConversionError::SUBSTITUTE: |
- ucnv_setToUCallBack(converter, ToUnicodeCallbackSubstitute, 0, |
- NULL, NULL, status); |
- break; |
- default: |
- NOTREACHED(); |
- } |
-} |
- |
-inline UConverterType utf32_platform_endian() { |
-#if U_IS_BIG_ENDIAN |
- return UCNV_UTF32_BigEndian; |
-#else |
- return UCNV_UTF32_LittleEndian; |
-#endif |
-} |
- |
} // namespace |
// UTF-8 <-> Wide -------------------------------------------------------------- |
@@ -485,142 +359,3 @@ |
} |
#endif |
- |
-// Codepage <-> Wide/UTF-16 --------------------------------------------------- |
- |
-// Convert a wstring into the specified codepage_name. If the codepage |
-// isn't found, return false. |
-bool WideToCodepage(const std::wstring& wide, |
- const char* codepage_name, |
- OnStringUtilConversionError::Type on_error, |
- std::string* encoded) { |
-#if defined(WCHAR_T_IS_UTF16) |
- return UTF16ToCodepage(wide, codepage_name, on_error, encoded); |
-#elif defined(WCHAR_T_IS_UTF32) |
- encoded->clear(); |
- |
- UErrorCode status = U_ZERO_ERROR; |
- UConverter* converter = ucnv_open(codepage_name, &status); |
- if (!U_SUCCESS(status)) |
- return false; |
- |
- int utf16_len; |
- // When wchar_t is wider than UChar (16 bits), transform |wide| into a |
- // UChar* string. Size the UChar* buffer to be large enough to hold twice |
- // as many UTF-16 code units (UChar's) as there are Unicode code points, |
- // in case each code points translates to a UTF-16 surrogate pair, |
- // and leave room for a NUL terminator. |
- std::vector<UChar> utf16(wide.length() * 2 + 1); |
- u_strFromWCS(&utf16[0], utf16.size(), &utf16_len, |
- wide.c_str(), wide.length(), &status); |
- DCHECK(U_SUCCESS(status)) << "failed to convert wstring to UChar*"; |
- |
- return ConvertFromUTF16(converter, &utf16[0], utf16_len, on_error, encoded); |
-#endif // defined(WCHAR_T_IS_UTF32) |
-} |
- |
-// Convert a UTF-16 string into the specified codepage_name. If the codepage |
-// isn't found, return false. |
-bool UTF16ToCodepage(const string16& utf16, |
- const char* codepage_name, |
- OnStringUtilConversionError::Type on_error, |
- std::string* encoded) { |
- encoded->clear(); |
- |
- UErrorCode status = U_ZERO_ERROR; |
- UConverter* converter = ucnv_open(codepage_name, &status); |
- if (!U_SUCCESS(status)) |
- return false; |
- |
- return ConvertFromUTF16(converter, utf16.c_str(), |
- static_cast<int>(utf16.length()), on_error, encoded); |
-} |
- |
-// Converts a string of the given codepage into wstring. |
-// If the codepage isn't found, return false. |
-bool CodepageToWide(const std::string& encoded, |
- const char* codepage_name, |
- OnStringUtilConversionError::Type on_error, |
- std::wstring* wide) { |
-#if defined(WCHAR_T_IS_UTF16) |
- return CodepageToUTF16(encoded, codepage_name, on_error, wide); |
-#elif defined(WCHAR_T_IS_UTF32) |
- wide->clear(); |
- |
- UErrorCode status = U_ZERO_ERROR; |
- UConverter* converter = ucnv_open(codepage_name, &status); |
- if (!U_SUCCESS(status)) |
- return false; |
- |
- // The maximum length in 4 byte unit of UTF-32 output would be |
- // at most the same as the number of bytes in input. In the worst |
- // case of GB18030 (excluding escaped-based encodings like ISO-2022-JP), |
- // this can be 4 times larger than actually needed. |
- size_t wchar_max_length = encoded.length() + 1; |
- |
- // The byte buffer and its length to pass to ucnv_toAlgorithimic. |
- char* byte_buffer = reinterpret_cast<char*>( |
- WriteInto(wide, wchar_max_length)); |
- int byte_buffer_length = static_cast<int>(wchar_max_length) * 4; |
- |
- SetUpErrorHandlerForToUChars(on_error, converter, &status); |
- int actual_size = ucnv_toAlgorithmic(utf32_platform_endian(), |
- converter, |
- byte_buffer, |
- byte_buffer_length, |
- encoded.data(), |
- static_cast<int>(encoded.length()), |
- &status); |
- ucnv_close(converter); |
- |
- if (!U_SUCCESS(status)) { |
- wide->clear(); // Make sure the output is empty on error. |
- return false; |
- } |
- |
- // actual_size is # of bytes. |
- wide->resize(actual_size / 4); |
- return true; |
-#endif // defined(WCHAR_T_IS_UTF32) |
-} |
- |
-// Converts a string of the given codepage into UTF-16. |
-// If the codepage isn't found, return false. |
-bool CodepageToUTF16(const std::string& encoded, |
- const char* codepage_name, |
- OnStringUtilConversionError::Type on_error, |
- string16* utf16) { |
- utf16->clear(); |
- |
- UErrorCode status = U_ZERO_ERROR; |
- UConverter* converter = ucnv_open(codepage_name, &status); |
- if (!U_SUCCESS(status)) |
- return false; |
- |
- // Even in the worst case, the maximum length in 2-byte units of UTF-16 |
- // output would be at most the same as the number of bytes in input. There |
- // is no single-byte encoding in which a character is mapped to a |
- // non-BMP character requiring two 2-byte units. |
- // |
- // Moreover, non-BMP characters in legacy multibyte encodings |
- // (e.g. EUC-JP, GB18030) take at least 2 bytes. The only exceptions are |
- // BOCU and SCSU, but we don't care about them. |
- size_t uchar_max_length = encoded.length() + 1; |
- |
- SetUpErrorHandlerForToUChars(on_error, converter, &status); |
- int actual_size = ucnv_toUChars(converter, |
- WriteInto(utf16, uchar_max_length), |
- static_cast<int>(uchar_max_length), |
- encoded.data(), |
- static_cast<int>(encoded.length()), |
- &status); |
- ucnv_close(converter); |
- if (!U_SUCCESS(status)) { |
- utf16->clear(); // Make sure the output is empty on error. |
- return false; |
- } |
- |
- utf16->resize(actual_size); |
- return true; |
-} |
- |
Property changes on: base/utf_string_conversions.cc |
___________________________________________________________________ |
Added: svn:mergeinfo |
Merged /branches/chrome_webkit_merge_branch/base/i18n/string_conversions.cc:r69-2775 |