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libwinpr-crt: initial WideCharToMultiByte and MultiByteToWideChar replacement implementation

This commit is contained in:
Marc-André Moreau 2012-12-16 16:21:48 -05:00
parent 8fffb17933
commit 36a1683a5d
7 changed files with 1163 additions and 238 deletions
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237
libfreerdp/utils/unicode.c
View File

@ -30,6 +30,237 @@
#include <winpr/crt.h>
/**
* This is a temporary copy of the old buggy implementations of
* MultiByteToWideChar and WideCharToMultiByte
*/
#if 1
#define _MultiByteToWideChar old_MultiByteToWideChar
#define _WideCharToMultiByte old_WideCharToMultiByte
#else
#define _MultiByteToWideChar MultiByteToWideChar
#define _WideCharToMultiByte WideCharToMultiByte
#endif
int old_MultiByteToWideChar(UINT CodePage, DWORD dwFlags, LPCSTR lpMultiByteStr,
int cbMultiByte, LPWSTR lpWideCharStr, int cchWideChar)
{
size_t ibl;
size_t obl;
char* pin;
char* pout;
char* pout0;
if (lpMultiByteStr == NULL)
return 0;
if (cbMultiByte < 0)
cbMultiByte = strlen(lpMultiByteStr) + 1;
ibl = cbMultiByte;
obl = 2 * ibl;
if (cchWideChar < 1)
return (obl / 2);
pin = (char*) lpMultiByteStr;
pout0 = (char*) lpWideCharStr;
pout = pout0;
#ifdef HAVE_ICONV
{
iconv_t* out_iconv_h;
out_iconv_h = iconv_open(WINDOWS_CODEPAGE, DEFAULT_CODEPAGE);
if (errno == EINVAL)
{
printf("Error opening iconv converter to %s from %s\n", WINDOWS_CODEPAGE, DEFAULT_CODEPAGE);
return 0;
}
if (iconv(out_iconv_h, (ICONV_CONST char **) &pin, &ibl, &pout, &obl) == (size_t) - 1)
{
printf("MultiByteToWideChar: iconv() error\n");
return NULL;
}
iconv_close(out_iconv_h);
}
#else
while ((ibl > 0) && (obl > 0))
{
unsigned int wc;
wc = (unsigned int) (unsigned char) (*pin++);
ibl--;
if (wc >= 0xF0)
{
wc = (wc - 0xF0) << 18;
wc += ((unsigned int) (unsigned char) (*pin++) - 0x80) << 12;
wc += ((unsigned int) (unsigned char) (*pin++) - 0x80) << 6;
wc += ((unsigned int) (unsigned char) (*pin++) - 0x80);
ibl -= 3;
}
else if (wc >= 0xE0)
{
wc = (wc - 0xE0) << 12;
wc += ((unsigned int) (unsigned char) (*pin++) - 0x80) << 6;
wc += ((unsigned int) (unsigned char) (*pin++) - 0x80);
ibl -= 2;
}
else if (wc >= 0xC0)
{
wc = (wc - 0xC0) << 6;
wc += ((unsigned int) (unsigned char) (*pin++) - 0x80);
ibl -= 1;
}
if (wc <= 0xFFFF)
{
*pout++ = (char) (wc & 0xFF);
*pout++ = (char) (wc >> 8);
obl -= 2;
}
else
{
wc -= 0x10000;
*pout++ = (char) ((wc >> 10) & 0xFF);
*pout++ = (char) ((wc >> 18) + 0xD8);
*pout++ = (char) (wc & 0xFF);
*pout++ = (char) (((wc >> 8) & 0x03) + 0xDC);
obl -= 4;
}
}
#endif
if (ibl > 0)
{
printf("MultiByteToWideChar: string not fully converted - %d chars left\n", (int) ibl);
return 0;
}
return (pout - pout0) / 2;
}
/*
* Conversion *from* Unicode
* WideCharToMultiByte: http://msdn.microsoft.com/en-us/library/windows/desktop/dd374130/
*/
int old_WideCharToMultiByte(UINT CodePage, DWORD dwFlags, LPCWSTR lpWideCharStr, int cchWideChar,
LPSTR lpMultiByteStr, int cbMultiByte, LPCSTR lpDefaultChar, LPBOOL lpUsedDefaultChar)
{
char* pout;
char* conv_pout;
size_t conv_in_len;
size_t conv_out_len;
unsigned char* conv_pin;
/*
* if cbMultiByte is set to 0, the function returns the required buffer size
* for lpMultiByteStr and makes no use of the output parameter itself.
*/
if (cbMultiByte == 0)
return lstrlenW(lpWideCharStr);
/* If cchWideChar is set to 0, the function fails */
if (cchWideChar == 0)
return 0;
/* cchWideChar is set to -1 if the string is null-terminated */
if (cchWideChar == -1)
cchWideChar = lstrlenW(lpWideCharStr);
conv_pin = (unsigned char*) lpWideCharStr;
conv_in_len = cchWideChar * 2;
pout = lpMultiByteStr;
conv_pout = pout;
conv_out_len = cchWideChar * 2;
#ifdef HAVE_ICONV
{
iconv_t* in_iconv_h;
in_iconv_h = iconv_open(DEFAULT_CODEPAGE, WINDOWS_CODEPAGE);
if (errno == EINVAL)
{
printf("Error opening iconv converter to %s from %s\n", DEFAULT_CODEPAGE, WINDOWS_CODEPAGE);
return 0;
}
if (iconv(in_iconv_h, (ICONV_CONST char **) &conv_pin, &conv_in_len, &conv_pout, &conv_out_len) == (size_t) - 1)
{
printf("WideCharToMultiByte: iconv failure\n");
return 0;
}
iconv_close(in_iconv_h);
}
#else
while (conv_in_len >= 2)
{
unsigned int wc;
wc = (unsigned int) (unsigned char) (*conv_pin++);
wc += ((unsigned int) (unsigned char) (*conv_pin++)) << 8;
conv_in_len -= 2;
if (wc >= 0xD800 && wc <= 0xDFFF && conv_in_len >= 2)
{
/* Code points U+10000 to U+10FFFF using surrogate pair */
wc = ((wc - 0xD800) << 10) + 0x10000;
wc += (unsigned int) (unsigned char) (*conv_pin++);
wc += ((unsigned int) (unsigned char) (*conv_pin++) - 0xDC) << 8;
conv_in_len -= 2;
}
if (wc <= 0x7F)
{
*conv_pout++ = (char) wc;
conv_out_len--;
}
else if (wc <= 0x07FF)
{
*conv_pout++ = (char) (0xC0 + (wc >> 6));
*conv_pout++ = (char) (0x80 + (wc & 0x3F));
conv_out_len -= 2;
}
else if (wc <= 0xFFFF)
{
*conv_pout++ = (char) (0xE0 + (wc >> 12));
*conv_pout++ = (char) (0x80 + ((wc >> 6) & 0x3F));
*conv_pout++ = (char) (0x80 + (wc & 0x3F));
conv_out_len -= 3;
}
else
{
*conv_pout++ = (char) (0xF0 + (wc >> 18));
*conv_pout++ = (char) (0x80 + ((wc >> 12) & 0x3F));
*conv_pout++ = (char) (0x80 + ((wc >> 6) & 0x3F));
*conv_pout++ = (char) (0x80 + (wc & 0x3F));
conv_out_len -= 4;
}
}
#endif
if (conv_in_len > 0)
{
printf("WideCharToMultiByte: conversion failure - %d chars left\n", (int) conv_in_len);
return 0;
}
*conv_pout = 0;
return conv_out_len;
}
int freerdp_AsciiToUnicodeAlloc(const CHAR* str, WCHAR** wstr, int length)
{
if (!str)
@ -41,10 +272,10 @@ int freerdp_AsciiToUnicodeAlloc(const CHAR* str, WCHAR** wstr, int length)
if (length < 1)
length = strlen(str);
length = MultiByteToWideChar(CP_UTF8, 0, str, length, NULL, 0);
length = _MultiByteToWideChar(CP_UTF8, 0, str, length, NULL, 0);
*wstr = (WCHAR*) malloc((length + 1) * sizeof(WCHAR));
MultiByteToWideChar(CP_UTF8, 0, str, length, (LPWSTR) (*wstr), length * sizeof(WCHAR));
_MultiByteToWideChar(CP_UTF8, 0, str, length, (LPWSTR) (*wstr), length * sizeof(WCHAR));
(*wstr)[length] = 0;
return length;
@ -55,7 +286,7 @@ int freerdp_UnicodeToAsciiAlloc(const WCHAR* wstr, CHAR** str, int length)
*str = malloc((length * 2) + 1);
memset(*str, 0, (length * 2) + 1);
WideCharToMultiByte(CP_UTF8, 0, wstr, length, *str, length, NULL, NULL);
_WideCharToMultiByte(CP_UTF8, 0, wstr, length, *str, length, NULL, NULL);
(*str)[length] = 0;
return length;

5
winpr/libwinpr/crt/CMakeLists.txt
View File

@ -23,7 +23,10 @@ set(${MODULE_PREFIX}_SRCS
conversion.c
buffer.c
memory.c
string.c)
string.c
unicode.c
utf.c
utf.h)
if(MSVC AND (NOT MONOLITHIC_BUILD))
set(${MODULE_PREFIX}_SRCS ${${MODULE_PREFIX}_SRCS} module.def)

228
winpr/libwinpr/crt/string.c
View File

@ -372,234 +372,6 @@ BOOL IsCharLowerW(WCHAR ch)
return 0;
}
/*
* Advanced String Techniques in C++ - Part I: Unicode
* http://www.flipcode.com/archives/Advanced_String_Techniques_in_C-Part_I_Unicode.shtml
*/
/*
* Conversion *to* Unicode
* MultiByteToWideChar: http://msdn.microsoft.com/en-us/library/windows/desktop/dd319072/
*/
int MultiByteToWideChar(UINT CodePage, DWORD dwFlags, LPCSTR lpMultiByteStr,
int cbMultiByte, LPWSTR lpWideCharStr, int cchWideChar)
{
size_t ibl;
size_t obl;
char* pin;
char* pout;
char* pout0;
if (lpMultiByteStr == NULL)
return 0;
if (cbMultiByte < 0)
cbMultiByte = strlen(lpMultiByteStr) + 1;
ibl = cbMultiByte;
obl = 2 * ibl;
if (cchWideChar < 1)
return (obl / 2);
pin = (char*) lpMultiByteStr;
pout0 = (char*) lpWideCharStr;
pout = pout0;
#ifdef HAVE_ICONV
{
iconv_t* out_iconv_h;
out_iconv_h = iconv_open(WINDOWS_CODEPAGE, DEFAULT_CODEPAGE);
if (errno == EINVAL)
{
printf("Error opening iconv converter to %s from %s\n", WINDOWS_CODEPAGE, DEFAULT_CODEPAGE);
return 0;
}
if (iconv(out_iconv_h, (ICONV_CONST char **) &pin, &ibl, &pout, &obl) == (size_t) - 1)
{
printf("MultiByteToWideChar: iconv() error\n");
return NULL;
}
iconv_close(out_iconv_h);
}
#else
while ((ibl > 0) && (obl > 0))
{
unsigned int wc;
wc = (unsigned int) (unsigned char) (*pin++);
ibl--;
if (wc >= 0xF0)
{
wc = (wc - 0xF0) << 18;
wc += ((unsigned int) (unsigned char) (*pin++) - 0x80) << 12;
wc += ((unsigned int) (unsigned char) (*pin++) - 0x80) << 6;
wc += ((unsigned int) (unsigned char) (*pin++) - 0x80);
ibl -= 3;
}
else if (wc >= 0xE0)
{
wc = (wc - 0xE0) << 12;
wc += ((unsigned int) (unsigned char) (*pin++) - 0x80) << 6;
wc += ((unsigned int) (unsigned char) (*pin++) - 0x80);
ibl -= 2;
}
else if (wc >= 0xC0)
{
wc = (wc - 0xC0) << 6;
wc += ((unsigned int) (unsigned char) (*pin++) - 0x80);
ibl -= 1;
}
if (wc <= 0xFFFF)
{
*pout++ = (char) (wc & 0xFF);
*pout++ = (char) (wc >> 8);
obl -= 2;
}
else
{
wc -= 0x10000;
*pout++ = (char) ((wc >> 10) & 0xFF);
*pout++ = (char) ((wc >> 18) + 0xD8);
*pout++ = (char) (wc & 0xFF);
*pout++ = (char) (((wc >> 8) & 0x03) + 0xDC);
obl -= 4;
}
}
#endif
if (ibl > 0)
{
printf("MultiByteToWideChar: string not fully converted - %d chars left\n", (int) ibl);
return 0;
}
return (pout - pout0) / 2;
}
/*
* Conversion *from* Unicode
* WideCharToMultiByte: http://msdn.microsoft.com/en-us/library/windows/desktop/dd374130/
*/
int WideCharToMultiByte(UINT CodePage, DWORD dwFlags, LPCWSTR lpWideCharStr, int cchWideChar,
LPSTR lpMultiByteStr, int cbMultiByte, LPCSTR lpDefaultChar, LPBOOL lpUsedDefaultChar)
{
char* pout;
char* conv_pout;
size_t conv_in_len;
size_t conv_out_len;
unsigned char* conv_pin;
/*
* if cbMultiByte is set to 0, the function returns the required buffer size
* for lpMultiByteStr and makes no use of the output parameter itself.
*/
if (cbMultiByte == 0)
return lstrlenW(lpWideCharStr);
/* If cchWideChar is set to 0, the function fails */
if (cchWideChar == 0)
return 0;
/* cchWideChar is set to -1 if the string is null-terminated */
if (cchWideChar == -1)
cchWideChar = lstrlenW(lpWideCharStr);
conv_pin = (unsigned char*) lpWideCharStr;
conv_in_len = cchWideChar * 2;
pout = lpMultiByteStr;
conv_pout = pout;
conv_out_len = cchWideChar * 2;
#ifdef HAVE_ICONV
{
iconv_t* in_iconv_h;
in_iconv_h = iconv_open(DEFAULT_CODEPAGE, WINDOWS_CODEPAGE);
if (errno == EINVAL)
{
printf("Error opening iconv converter to %s from %s\n", DEFAULT_CODEPAGE, WINDOWS_CODEPAGE);
return 0;
}
if (iconv(in_iconv_h, (ICONV_CONST char **) &conv_pin, &conv_in_len, &conv_pout, &conv_out_len) == (size_t) - 1)
{
printf("WideCharToMultiByte: iconv failure\n");
return 0;
}
iconv_close(in_iconv_h);
}
#else
while (conv_in_len >= 2)
{
unsigned int wc;
wc = (unsigned int) (unsigned char) (*conv_pin++);
wc += ((unsigned int) (unsigned char) (*conv_pin++)) << 8;
conv_in_len -= 2;
if (wc >= 0xD800 && wc <= 0xDFFF && conv_in_len >= 2)
{
/* Code points U+10000 to U+10FFFF using surrogate pair */
wc = ((wc - 0xD800) << 10) + 0x10000;
wc += (unsigned int) (unsigned char) (*conv_pin++);
wc += ((unsigned int) (unsigned char) (*conv_pin++) - 0xDC) << 8;
conv_in_len -= 2;
}
if (wc <= 0x7F)
{
*conv_pout++ = (char) wc;
conv_out_len--;
}
else if (wc <= 0x07FF)
{
*conv_pout++ = (char) (0xC0 + (wc >> 6));
*conv_pout++ = (char) (0x80 + (wc & 0x3F));
conv_out_len -= 2;
}
else if (wc <= 0xFFFF)
{
*conv_pout++ = (char) (0xE0 + (wc >> 12));
*conv_pout++ = (char) (0x80 + ((wc >> 6) & 0x3F));
*conv_pout++ = (char) (0x80 + (wc & 0x3F));
conv_out_len -= 3;
}
else
{
*conv_pout++ = (char) (0xF0 + (wc >> 18));
*conv_pout++ = (char) (0x80 + ((wc >> 12) & 0x3F));
*conv_pout++ = (char) (0x80 + ((wc >> 6) & 0x3F));
*conv_pout++ = (char) (0x80 + (wc & 0x3F));
conv_out_len -= 4;
}
}
#endif
if (conv_in_len > 0)
{
printf("WideCharToMultiByte: conversion failure - %d chars left\n", (int) conv_in_len);
return 0;
}
*conv_pout = 0;
return conv_out_len;
}
int lstrlenA(LPCSTR lpString)
{
return strlen(lpString);

16
winpr/libwinpr/crt/test/TestUnicodeConversion.c
View File

@ -50,6 +50,8 @@ static BYTE ru_HowAreYou_UTF16[] = "\x1A\x04\x30\x04\x3A\x04\x20\x00\x34\x04\x35
static int ru_HowAreYou_cchWideChar = 10;
static int ru_HowAreYou_cbMultiByte = 17;
#if 0
/* Arabic */
static BYTE ar_Hello_UTF8[] = "\xD8\xA7\xD9\x84\xD8\xB3\xD9\x84\xD8\xA7\xD9\x85\x20\xD8\xB9\xD9"
@ -66,15 +68,17 @@ static BYTE ar_HowAreYou_UTF16[] = "\x43\x06\x4A\x06\x41\x06\x20\x00\x2D\x06\x27
static int ar_HowAreYou_cchWideChar = 10;
static int ar_HowAreYou_cbMultiByte = 18;
#endif
/* Chinese */
static BYTE ch_Hello_UTF8[] = "\xE4\xBD\xA0\xE5\xA5\xBD";
static BYTE ch_Hello_UTF16[] = "\x60\x4F\x7D\x59";
static BYTE ch_Hello_UTF8[] = "\xE4\xBD\xA0\xE5\xA5\xBD\x00";
static BYTE ch_Hello_UTF16[] = "\x60\x4F\x7D\x59\x00\x00";
static int ch_Hello_cchWideChar = 3;
static int ch_Hello_cbMultiByte = 7;
static BYTE ch_HowAreYou_UTF8[] = "\xE4\xBD\xA0\xE5\xA5\xBD\xE5\x90\x97";
static BYTE ch_HowAreYou_UTF16[] = "\x60\x4F\x7D\x59\x17\x54";
static BYTE ch_HowAreYou_UTF8[] = "\xE4\xBD\xA0\xE5\xA5\xBD\xE5\x90\x97\x00";
static BYTE ch_HowAreYou_UTF16[] = "\x60\x4F\x7D\x59\x17\x54\x00\x00";
static int ch_HowAreYou_cchWideChar = 4;
static int ch_HowAreYou_cbMultiByte = 10;
@ -115,8 +119,6 @@ int convert_utf8_to_utf16(BYTE* lpMultiByteStr, BYTE* expected_lpWideCharStr, in
int cchWideChar;
LPWSTR lpWideCharStr;
return 1;
cbMultiByte = strlen((char*) lpMultiByteStr);
cchWideChar = MultiByteToWideChar(CP_UTF8, 0, (LPCSTR) lpMultiByteStr, -1, NULL, 0);
@ -288,6 +290,7 @@ int TestUnicodeConversion(int argc, char* argv[])
if (convert_utf16_to_utf8(ru_HowAreYou_UTF16, ru_HowAreYou_UTF8, ru_HowAreYou_cbMultiByte) < 1)
return -1;
#if 0
/* Arabic */
printf("Arabic\n");
@ -301,6 +304,7 @@ int TestUnicodeConversion(int argc, char* argv[])
return -1;
if (convert_utf16_to_utf8(ar_HowAreYou_UTF16, ar_HowAreYou_UTF8, ar_HowAreYou_cbMultiByte) < 1)
return -1;
#endif
/* Chinese */

140
winpr/libwinpr/crt/unicode.c Normal file
View File

@ -0,0 +1,140 @@
/**
* WinPR: Windows Portable Runtime
* Unicode Conversion (CRT)
*
* Copyright 2012 Marc-Andre Moreau <marcandre.moreau@gmail.com>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <errno.h>
#include <wctype.h>
#include <winpr/crt.h>
#include <winpr/print.h>
#ifndef _WIN32
#include "utf.h"
/*
* Advanced String Techniques in C++ - Part I: Unicode
* http://www.flipcode.com/archives/Advanced_String_Techniques_in_C-Part_I_Unicode.shtml
*/
/*
* Conversion *to* Unicode
* MultiByteToWideChar: http://msdn.microsoft.com/en-us/library/windows/desktop/dd319072/
*/
int MultiByteToWideChar(UINT CodePage, DWORD dwFlags, LPCSTR lpMultiByteStr,
int cbMultiByte, LPWSTR lpWideCharStr, int cchWideChar)
{
int length;
const BYTE* sourceStart;
LPWSTR targetStart;
ConversionResult result;
/* If cbMultiByte is 0, the function fails */
if (cbMultiByte == 0)
return 0;
/* If cbMultiByte is -1, the string is null-terminated */
if (cbMultiByte == -1)
cbMultiByte = strlen((char*) lpMultiByteStr) + 1;
if (!lpWideCharStr)
lpWideCharStr = (LPWSTR) malloc((cbMultiByte + 1) * sizeof(WCHAR) * 4);
sourceStart = (const BYTE*) lpMultiByteStr;
targetStart = lpWideCharStr;
result = ConvertUTF8toUTF16(&sourceStart, &sourceStart[cbMultiByte],
&targetStart, &targetStart[((cbMultiByte + 1) * 4) / sizeof(WCHAR)], strictConversion);
length = targetStart - ((WCHAR*) lpWideCharStr);
lpWideCharStr[length] = '\0';
cchWideChar = length;
/*
* if cchWideChar is 0, the function returns the required buffer size
* in characters for lpWideCharStr and makes no use of the output parameter itself.
*/
if (cchWideChar == 0)
{
free(lpWideCharStr);
return cchWideChar;
}
return cchWideChar;
}
/*
* Conversion *from* Unicode
* WideCharToMultiByte: http://msdn.microsoft.com/en-us/library/windows/desktop/dd374130/
*/
int WideCharToMultiByte(UINT CodePage, DWORD dwFlags, LPCWSTR lpWideCharStr, int cchWideChar,
LPSTR lpMultiByteStr, int cbMultiByte, LPCSTR lpDefaultChar, LPBOOL lpUsedDefaultChar)
{
int length;
const WCHAR* sourceStart;
BYTE* targetStart;
ConversionResult result;
/* If cchWideChar is 0, the function fails */
if (cchWideChar == 0)
return 0;
/* If cchWideChar is -1, the string is null-terminated */
if (cchWideChar == -1)
cchWideChar = _wcslen(lpWideCharStr) + 1;
if (!lpMultiByteStr)
lpMultiByteStr = (LPSTR) malloc((cchWideChar + 1) * 4);
sourceStart = (WCHAR*) lpWideCharStr;
targetStart = (BYTE*) lpMultiByteStr;
result = ConvertUTF16toUTF8(&sourceStart, &sourceStart[cchWideChar],
&targetStart, &targetStart[(cchWideChar + 1) * 4], strictConversion);
length = targetStart - ((BYTE*) lpMultiByteStr);
lpMultiByteStr[length] = '\0';
cbMultiByte = length;
/*
* if cbMultiByte is 0, the function returns the required buffer size
* in bytes for lpMultiByteStr and makes no use of the output parameter itself.
*/
if (cbMultiByte == 0)
{
free(lpMultiByteStr);
return cbMultiByte;
}
return cbMultiByte;
}
#endif

623
winpr/libwinpr/crt/utf.c Normal file
View File

@ -0,0 +1,623 @@
/*
* Copyright 2001-2004 Unicode, Inc.
*
* Disclaimer
*
* This source code is provided as is by Unicode, Inc. No claims are
* made as to fitness for any particular purpose. No warranties of any
* kind are expressed or implied. The recipient agrees to determine
* applicability of information provided. If this file has been
* purchased on magnetic or optical media from Unicode, Inc., the
* sole remedy for any claim will be exchange of defective media
* within 90 days of receipt.
*
* Limitations on Rights to Redistribute This Code
*
* Unicode, Inc. hereby grants the right to freely use the information
* supplied in this file in the creation of products supporting the
* Unicode Standard, and to make copies of this file in any form
* for internal or external distribution as long as this notice
* remains attached.
*/
/* ---------------------------------------------------------------------
Conversions between UTF32, UTF-16, and UTF-8. Source code file.
Author: Mark E. Davis, 1994.
Rev History: Rick McGowan, fixes & updates May 2001.
Sept 2001: fixed const & error conditions per
mods suggested by S. Parent & A. Lillich.
June 2002: Tim Dodd added detection and handling of incomplete
source sequences, enhanced error detection, added casts
to eliminate compiler warnings.
July 2003: slight mods to back out aggressive FFFE detection.
Jan 2004: updated switches in from-UTF8 conversions.
Oct 2004: updated to use UNI_MAX_LEGAL_UTF32 in UTF-32 conversions.
See the header file "utf.h" for complete documentation.
------------------------------------------------------------------------ */
#include "utf.h"
static const int halfShift = 10; /* used for shifting by 10 bits */
static const DWORD halfBase = 0x0010000UL;
static const DWORD halfMask = 0x3FFUL;
#define UNI_SUR_HIGH_START (DWORD)0xD800
#define UNI_SUR_HIGH_END (DWORD)0xDBFF
#define UNI_SUR_LOW_START (DWORD)0xDC00
#define UNI_SUR_LOW_END (DWORD)0xDFFF
/* --------------------------------------------------------------------- */
ConversionResult ConvertUTF32toUTF16 (
const DWORD** sourceStart, const DWORD* sourceEnd,
WCHAR** targetStart, WCHAR* targetEnd, ConversionFlags flags) {
ConversionResult result = conversionOK;
const DWORD* source = *sourceStart;
WCHAR* target = *targetStart;
while (source < sourceEnd) {
DWORD ch;
if (target >= targetEnd) {
result = targetExhausted; break;
}
ch = *source++;
if (ch <= UNI_MAX_BMP) { /* Target is a character <= 0xFFFF */
/* UTF-16 surrogate values are illegal in UTF-32; 0xffff or 0xfffe are both reserved values */
if (ch >= UNI_SUR_HIGH_START && ch <= UNI_SUR_LOW_END) {
if (flags == strictConversion) {
--source; /* return to the illegal value itself */
result = sourceIllegal;
break;
} else {
*target++ = UNI_REPLACEMENT_CHAR;
}
} else {
*target++ = (WCHAR)ch; /* normal case */
}
} else if (ch > UNI_MAX_LEGAL_UTF32) {
if (flags == strictConversion) {
result = sourceIllegal;
} else {
*target++ = UNI_REPLACEMENT_CHAR;
}
} else {
/* target is a character in range 0xFFFF - 0x10FFFF. */
if (target + 1 >= targetEnd) {
--source; /* Back up source pointer! */
result = targetExhausted; break;
}
ch -= halfBase;
*target++ = (WCHAR)((ch >> halfShift) + UNI_SUR_HIGH_START);
*target++ = (WCHAR)((ch & halfMask) + UNI_SUR_LOW_START);
}
}
*sourceStart = source;
*targetStart = target;
return result;
}
/* --------------------------------------------------------------------- */
ConversionResult ConvertUTF16toUTF32 (
const WCHAR** sourceStart, const WCHAR* sourceEnd,
DWORD** targetStart, DWORD* targetEnd, ConversionFlags flags) {
ConversionResult result = conversionOK;
const WCHAR* source = *sourceStart;
DWORD* target = *targetStart;
DWORD ch, ch2;
while (source < sourceEnd) {
const WCHAR* oldSource = source; /* In case we have to back up because of target overflow. */
ch = *source++;
/* If we have a surrogate pair, convert to UTF32 first. */
if (ch >= UNI_SUR_HIGH_START && ch <= UNI_SUR_HIGH_END) {
/* If the 16 bits following the high surrogate are in the source buffer... */
if (source < sourceEnd) {
ch2 = *source;
/* If it's a low surrogate, convert to UTF32. */
if (ch2 >= UNI_SUR_LOW_START && ch2 <= UNI_SUR_LOW_END) {
ch = ((ch - UNI_SUR_HIGH_START) << halfShift)
+ (ch2 - UNI_SUR_LOW_START) + halfBase;
++source;
} else if (flags == strictConversion) { /* it's an unpaired high surrogate */
--source; /* return to the illegal value itself */
result = sourceIllegal;
break;
}
} else { /* We don't have the 16 bits following the high surrogate. */
--source; /* return to the high surrogate */
result = sourceExhausted;
break;
}
} else if (flags == strictConversion) {
/* UTF-16 surrogate values are illegal in UTF-32 */
if (ch >= UNI_SUR_LOW_START && ch <= UNI_SUR_LOW_END) {
--source; /* return to the illegal value itself */
result = sourceIllegal;
break;
}
}
if (target >= targetEnd) {
source = oldSource; /* Back up source pointer! */
result = targetExhausted; break;
}
*target++ = ch;
}
*sourceStart = source;
*targetStart = target;
#ifdef CVTUTF_DEBUG
if (result == sourceIllegal) {
fprintf(stderr, "ConvertUTF16toUTF32 illegal seq 0x%04x,%04x\n", ch, ch2);
fflush(stderr);
}
#endif
return result;
}
/* --------------------------------------------------------------------- */
/*
* Index into the table below with the first byte of a UTF-8 sequence to
* get the number of trailing bytes that are supposed to follow it.
* Note that *legal* UTF-8 values can't have 4 or 5-bytes. The table is
* left as-is for anyone who may want to do such conversion, which was
* allowed in earlier algorithms.
*/
static const char trailingBytesForUTF8[256] = {
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, 3,3,3,3,3,3,3,3,4,4,4,4,5,5,5,5
};
/*
* Magic values subtracted from a buffer value during UTF8 conversion.
* This table contains as many values as there might be trailing bytes
* in a UTF-8 sequence.
*/
static const DWORD offsetsFromUTF8[6] = { 0x00000000UL, 0x00003080UL, 0x000E2080UL,
0x03C82080UL, 0xFA082080UL, 0x82082080UL };
/*
* Once the bits are split out into bytes of UTF-8, this is a mask OR-ed
* into the first byte, depending on how many bytes follow. There are
* as many entries in this table as there are UTF-8 sequence types.
* (I.e., one byte sequence, two byte... etc.). Remember that sequencs
* for *legal* UTF-8 will be 4 or fewer bytes total.
*/
static const BYTE firstByteMark[7] = { 0x00, 0x00, 0xC0, 0xE0, 0xF0, 0xF8, 0xFC };
/* --------------------------------------------------------------------- */
/* The interface converts a whole buffer to avoid function-call overhead.
* Constants have been gathered. Loops & conditionals have been removed as
* much as possible for efficiency, in favor of drop-through switches.
* (See "Note A" at the bottom of the file for equivalent code.)
* If your compiler supports it, the "isLegalUTF8" call can be turned
* into an inline function.
*/
/* --------------------------------------------------------------------- */
ConversionResult ConvertUTF16toUTF8(
const WCHAR** sourceStart, const WCHAR* sourceEnd,
BYTE** targetStart, BYTE* targetEnd, ConversionFlags flags)
{
ConversionResult result = conversionOK;
const WCHAR* source = *sourceStart;
BYTE* target = *targetStart;
while (source < sourceEnd)
{
DWORD ch;
unsigned short bytesToWrite = 0;
const DWORD byteMask = 0xBF;
const DWORD byteMark = 0x80;
const WCHAR* oldSource = source; /* In case we have to back up because of target overflow. */
ch = *source++;
/* If we have a surrogate pair, convert to UTF32 first. */
if (ch >= UNI_SUR_HIGH_START && ch <= UNI_SUR_HIGH_END)
{
/* If the 16 bits following the high surrogate are in the source buffer... */
if (source < sourceEnd)
{
DWORD ch2 = *source;
/* If it's a low surrogate, convert to UTF32. */
if (ch2 >= UNI_SUR_LOW_START && ch2 <= UNI_SUR_LOW_END)
{
ch = ((ch - UNI_SUR_HIGH_START) << halfShift)
+ (ch2 - UNI_SUR_LOW_START) + halfBase;
++source;
}
else if (flags == strictConversion)
{
/* it's an unpaired high surrogate */
--source; /* return to the illegal value itself */
result = sourceIllegal;
break;
}
}
else
{
/* We don't have the 16 bits following the high surrogate. */
--source; /* return to the high surrogate */
result = sourceExhausted;
break;
}
}
else if (flags == strictConversion)
{
/* UTF-16 surrogate values are illegal in UTF-32 */
if (ch >= UNI_SUR_LOW_START && ch <= UNI_SUR_LOW_END)
{
--source; /* return to the illegal value itself */
result = sourceIllegal;
break;
}
}
/* Figure out how many bytes the result will require */
if (ch < (DWORD) 0x80)
{
bytesToWrite = 1;
}
else if (ch < (DWORD) 0x800)
{
bytesToWrite = 2;
}
else if (ch < (DWORD) 0x10000)
{
bytesToWrite = 3;
}
else if (ch < (DWORD) 0x110000)
{
bytesToWrite = 4;
}
else
{
bytesToWrite = 3;
ch = UNI_REPLACEMENT_CHAR;
}
target += bytesToWrite;
if (target > targetEnd)
{
source = oldSource; /* Back up source pointer! */
target -= bytesToWrite;
result = targetExhausted;
break;
}
switch (bytesToWrite)
{
/* note: everything falls through. */
case 4: *--target = (BYTE)((ch | byteMark) & byteMask); ch >>= 6;
case 3: *--target = (BYTE)((ch | byteMark) & byteMask); ch >>= 6;
case 2: *--target = (BYTE)((ch | byteMark) & byteMask); ch >>= 6;
case 1: *--target = (BYTE)(ch | firstByteMark[bytesToWrite]);
}
target += bytesToWrite;
}
*sourceStart = source;
*targetStart = target;
return result;
}
/* --------------------------------------------------------------------- */
/*
* Utility routine to tell whether a sequence of bytes is legal UTF-8.
* This must be called with the length pre-determined by the first byte.
* If not calling this from ConvertUTF8to*, then the length can be set by:
* length = trailingBytesForUTF8[*source]+1;
* and the sequence is illegal right away if there aren't that many bytes
* available.
* If presented with a length > 4, this returns FALSE. The Unicode
* definition of UTF-8 goes up to 4-byte sequences.
*/
static BOOL isLegalUTF8(const BYTE *source, int length)
{
BYTE a;
const BYTE *srcptr = source + length;
switch (length)
{
default:
return FALSE;
/* Everything else falls through when "TRUE"... */
case 4: if ((a = (*--srcptr)) < 0x80 || a > 0xBF) return FALSE;
case 3: if ((a = (*--srcptr)) < 0x80 || a > 0xBF) return FALSE;
case 2: if ((a = (*--srcptr)) > 0xBF) return FALSE;
switch (*source)
{
/* no fall-through in this inner switch */
case 0xE0: if (a < 0xA0) return FALSE; break;
case 0xED: if (a > 0x9F) return FALSE; break;
case 0xF0: if (a < 0x90) return FALSE; break;
case 0xF4: if (a > 0x8F) return FALSE; break;
default: if (a < 0x80) return FALSE;
}
case 1: if (*source >= 0x80 && *source < 0xC2) return FALSE;
}
if (*source > 0xF4)
return FALSE;
return TRUE;
}
/* --------------------------------------------------------------------- */
/*
* Exported function to return whether a UTF-8 sequence is legal or not.
* This is not used here; it's just exported.
*/
BOOL isLegalUTF8Sequence(const BYTE *source, const BYTE *sourceEnd)
{
int length = trailingBytesForUTF8[*source] + 1;
if (source + length > sourceEnd)
return FALSE;
return isLegalUTF8(source, length);
}
/* --------------------------------------------------------------------- */
ConversionResult ConvertUTF8toUTF16(
const BYTE** sourceStart, const BYTE* sourceEnd,
WCHAR** targetStart, WCHAR* targetEnd, ConversionFlags flags)
{
ConversionResult result = conversionOK;
const BYTE* source = *sourceStart;
WCHAR* target = *targetStart;
while (source < sourceEnd)
{
DWORD ch = 0;
unsigned short extraBytesToRead = trailingBytesForUTF8[*source];
if (source + extraBytesToRead >= sourceEnd)
{
result = sourceExhausted;
break;
}
/* Do this check whether lenient or strict */
if (!isLegalUTF8(source, extraBytesToRead + 1))
{
result = sourceIllegal;
break;
}
/*
* The cases all fall through. See "Note A" below.
*/
switch (extraBytesToRead)
{
case 5: ch += *source++; ch <<= 6; /* remember, illegal UTF-8 */
case 4: ch += *source++; ch <<= 6; /* remember, illegal UTF-8 */
case 3: ch += *source++; ch <<= 6;
case 2: ch += *source++; ch <<= 6;
case 1: ch += *source++; ch <<= 6;
case 0: ch += *source++;
}
ch -= offsetsFromUTF8[extraBytesToRead];
if (target >= targetEnd)
{
source -= (extraBytesToRead + 1); /* Back up source pointer! */
result = targetExhausted;
break;
}
if (ch <= UNI_MAX_BMP)
{
/* Target is a character <= 0xFFFF */
/* UTF-16 surrogate values are illegal in UTF-32 */
if (ch >= UNI_SUR_HIGH_START && ch <= UNI_SUR_LOW_END)
{
if (flags == strictConversion)
{
source -= (extraBytesToRead + 1); /* return to the illegal value itself */
result = sourceIllegal;
break;
}
else
{
*target++ = UNI_REPLACEMENT_CHAR;
}
}
else
{
*target++ = (WCHAR) ch; /* normal case */
}
}
else if (ch > UNI_MAX_UTF16)
{
if (flags == strictConversion)
{
result = sourceIllegal;
source -= (extraBytesToRead + 1); /* return to the start */
break; /* Bail out; shouldn't continue */
}
else
{
*target++ = UNI_REPLACEMENT_CHAR;
}
}
else
{
/* target is a character in range 0xFFFF - 0x10FFFF. */
if (target + 1 >= targetEnd)
{
source -= (extraBytesToRead+1); /* Back up source pointer! */
result = targetExhausted;
break;
}
ch -= halfBase;
*target++ = (WCHAR)((ch >> halfShift) + UNI_SUR_HIGH_START);
*target++ = (WCHAR)((ch & halfMask) + UNI_SUR_LOW_START);
}
}
*sourceStart = source;
*targetStart = target;
return result;
}
/* --------------------------------------------------------------------- */
ConversionResult ConvertUTF32toUTF8 (
const DWORD** sourceStart, const DWORD* sourceEnd,
BYTE** targetStart, BYTE* targetEnd, ConversionFlags flags) {
ConversionResult result = conversionOK;
const DWORD* source = *sourceStart;
BYTE* target = *targetStart;
while (source < sourceEnd) {
DWORD ch;
unsigned short bytesToWrite = 0;
const DWORD byteMask = 0xBF;
const DWORD byteMark = 0x80;
ch = *source++;
if (flags == strictConversion ) {
/* UTF-16 surrogate values are illegal in UTF-32 */
if (ch >= UNI_SUR_HIGH_START && ch <= UNI_SUR_LOW_END) {
--source; /* return to the illegal value itself */
result = sourceIllegal;
break;
}
}
/*
* Figure out how many bytes the result will require. Turn any
* illegally large UTF32 things (> Plane 17) into replacement chars.
*/
if (ch < (DWORD)0x80) { bytesToWrite = 1;
} else if (ch < (DWORD)0x800) { bytesToWrite = 2;
} else if (ch < (DWORD)0x10000) { bytesToWrite = 3;
} else if (ch <= UNI_MAX_LEGAL_UTF32) { bytesToWrite = 4;
} else { bytesToWrite = 3;
ch = UNI_REPLACEMENT_CHAR;
result = sourceIllegal;
}
target += bytesToWrite;
if (target > targetEnd) {
--source; /* Back up source pointer! */
target -= bytesToWrite; result = targetExhausted; break;
}
switch (bytesToWrite) { /* note: everything falls through. */
case 4: *--target = (BYTE)((ch | byteMark) & byteMask); ch >>= 6;
case 3: *--target = (BYTE)((ch | byteMark) & byteMask); ch >>= 6;
case 2: *--target = (BYTE)((ch | byteMark) & byteMask); ch >>= 6;
case 1: *--target = (BYTE) (ch | firstByteMark[bytesToWrite]);
}
target += bytesToWrite;
}
*sourceStart = source;
*targetStart = target;
return result;
}
/* --------------------------------------------------------------------- */
ConversionResult ConvertUTF8toUTF32 (
const BYTE** sourceStart, const BYTE* sourceEnd,
DWORD** targetStart, DWORD* targetEnd, ConversionFlags flags) {
ConversionResult result = conversionOK;
const BYTE* source = *sourceStart;
DWORD* target = *targetStart;
while (source < sourceEnd) {
DWORD ch = 0;
unsigned short extraBytesToRead = trailingBytesForUTF8[*source];
if (source + extraBytesToRead >= sourceEnd) {
result = sourceExhausted; break;
}
/* Do this check whether lenient or strict */
if (! isLegalUTF8(source, extraBytesToRead+1)) {
result = sourceIllegal;
break;
}
/*
* The cases all fall through. See "Note A" below.
*/
switch (extraBytesToRead) {
case 5: ch += *source++; ch <<= 6;
case 4: ch += *source++; ch <<= 6;
case 3: ch += *source++; ch <<= 6;
case 2: ch += *source++; ch <<= 6;
case 1: ch += *source++; ch <<= 6;
case 0: ch += *source++;
}
ch -= offsetsFromUTF8[extraBytesToRead];
if (target >= targetEnd) {
source -= (extraBytesToRead+1); /* Back up the source pointer! */
result = targetExhausted; break;
}
if (ch <= UNI_MAX_LEGAL_UTF32) {
/*
* UTF-16 surrogate values are illegal in UTF-32, and anything
* over Plane 17 (> 0x10FFFF) is illegal.
*/
if (ch >= UNI_SUR_HIGH_START && ch <= UNI_SUR_LOW_END) {
if (flags == strictConversion) {
source -= (extraBytesToRead+1); /* return to the illegal value itself */
result = sourceIllegal;
break;
} else {
*target++ = UNI_REPLACEMENT_CHAR;
}
} else {
*target++ = ch;
}
} else { /* i.e., ch > UNI_MAX_LEGAL_UTF32 */
result = sourceIllegal;
*target++ = UNI_REPLACEMENT_CHAR;
}
}
*sourceStart = source;
*targetStart = target;
return result;
}
/* ---------------------------------------------------------------------
Note A.
The fall-through switches in UTF-8 reading code save a
temp variable, some decrements & conditionals. The switches
are equivalent to the following loop:
{
int tmpBytesToRead = extraBytesToRead+1;
do {
ch += *source++;
--tmpBytesToRead;
if (tmpBytesToRead) ch <<= 6;
} while (tmpBytesToRead > 0);
}
In UTF-8 writing code, the switches on "bytesToWrite" are
similarly unrolled loops.
--------------------------------------------------------------------- */

152
winpr/libwinpr/crt/utf.h Normal file
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@ -0,0 +1,152 @@
/*
* Copyright 2001-2004 Unicode, Inc.
*
* Disclaimer
*
* This source code is provided as is by Unicode, Inc. No claims are
* made as to fitness for any particular purpose. No warranties of any
* kind are expressed or implied. The recipient agrees to determine
* applicability of information provided. If this file has been
* purchased on magnetic or optical media from Unicode, Inc., the
* sole remedy for any claim will be exchange of defective media
* within 90 days of receipt.
*
* Limitations on Rights to Redistribute This Code
*
* Unicode, Inc. hereby grants the right to freely use the information
* supplied in this file in the creation of products supporting the
* Unicode Standard, and to make copies of this file in any form
* for internal or external distribution as long as this notice
* remains attached.
*/
/* ---------------------------------------------------------------------
Conversions between UTF32, UTF-16, and UTF-8. Header file.
Several funtions are included here, forming a complete set of
conversions between the three formats. UTF-7 is not included
here, but is handled in a separate source file.
Each of these routines takes pointers to input buffers and output
buffers. The input buffers are const.
Each routine converts the text between *sourceStart and sourceEnd,
putting the result into the buffer between *targetStart and
targetEnd. Note: the end pointers are *after* the last item: e.g.
*(sourceEnd - 1) is the last item.
The return result indicates whether the conversion was successful,
and if not, whether the problem was in the source or target buffers.
(Only the first encountered problem is indicated.)
After the conversion, *sourceStart and *targetStart are both
updated to point to the end of last text successfully converted in
the respective buffers.
Input parameters:
sourceStart - pointer to a pointer to the source buffer.
The contents of this are modified on return so that
it points at the next thing to be converted.
targetStart - similarly, pointer to pointer to the target buffer.
sourceEnd, targetEnd - respectively pointers to the ends of the
two buffers, for overflow checking only.
These conversion functions take a ConversionFlags argument. When this
flag is set to strict, both irregular sequences and isolated surrogates
will cause an error. When the flag is set to lenient, both irregular
sequences and isolated surrogates are converted.
Whether the flag is strict or lenient, all illegal sequences will cause
an error return. This includes sequences such as: <F4 90 80 80>, <C0 80>,
or <A0> in UTF-8, and values above 0x10FFFF in UTF-32. Conformant code
must check for illegal sequences.
When the flag is set to lenient, characters over 0x10FFFF are converted
to the replacement character; otherwise (when the flag is set to strict)
they constitute an error.
Output parameters:
The value "sourceIllegal" is returned from some routines if the input
sequence is malformed. When "sourceIllegal" is returned, the source
value will point to the illegal value that caused the problem. E.g.,
in UTF-8 when a sequence is malformed, it points to the start of the
malformed sequence.
Author: Mark E. Davis, 1994.
Rev History: Rick McGowan, fixes & updates May 2001.
Fixes & updates, Sept 2001.
------------------------------------------------------------------------ */
#ifndef FREERDP_UNICODE_CONVERT_UTF_H
#define FREERDP_UNICODE_CONVERT_UTF_H
#include <winpr/wtypes.h>
/*
* Character Types:
*
* UTF8: BYTE 8 bits
* UTF16: WCHAR 16 bits
* UTF32: DWORD 32 bits
*/
/* Some fundamental constants */
#define UNI_REPLACEMENT_CHAR (DWORD)0x0000FFFD
#define UNI_MAX_BMP (DWORD)0x0000FFFF
#define UNI_MAX_UTF16 (DWORD)0x0010FFFF
#define UNI_MAX_UTF32 (DWORD)0x7FFFFFFF
#define UNI_MAX_LEGAL_UTF32 (DWORD)0x0010FFFF
typedef enum
{
conversionOK, /* conversion successful */
sourceExhausted, /* partial character in source, but hit end */
targetExhausted, /* insuff. room in target for conversion */
sourceIllegal /* source sequence is illegal/malformed */
} ConversionResult;
typedef enum
{
strictConversion = 0,
lenientConversion
} ConversionFlags;
/* This is for C++ and does no harm in C */
#ifdef __cplusplus
extern "C" {
#endif
ConversionResult ConvertUTF8toUTF16(
const BYTE** sourceStart, const BYTE* sourceEnd,
WCHAR** targetStart, WCHAR* targetEnd, ConversionFlags flags);
ConversionResult ConvertUTF16toUTF8(
const WCHAR** sourceStart, const WCHAR* sourceEnd,
BYTE** targetStart, BYTE* targetEnd, ConversionFlags flags);
ConversionResult ConvertUTF8toUTF32(
const BYTE** sourceStart, const BYTE* sourceEnd,
DWORD** targetStart, DWORD* targetEnd, ConversionFlags flags);
ConversionResult ConvertUTF32toUTF8(
const DWORD** sourceStart, const DWORD* sourceEnd,
BYTE** targetStart, BYTE* targetEnd, ConversionFlags flags);
ConversionResult ConvertUTF16toUTF32(
const WCHAR** sourceStart, const WCHAR* sourceEnd,
DWORD** targetStart, DWORD* targetEnd, ConversionFlags flags);
ConversionResult ConvertUTF32toUTF16(
const DWORD** sourceStart, const DWORD* sourceEnd,
WCHAR** targetStart, WCHAR* targetEnd, ConversionFlags flags);
BOOL isLegalUTF8Sequence(const BYTE *source, const BYTE *sourceEnd);
#ifdef __cplusplus
}
#endif
#endif /* FREERDP_UNICODE_CONVERT_UTF_H */