138 lines
3.9 KiB
C++
138 lines
3.9 KiB
C++
/*
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**********************************************************************
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* Copyright (C) 2001-2004, International Business Machines
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* Corporation and others. All Rights Reserved.
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**********************************************************************
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* FILE NAME : ustream.cpp
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*
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* Modification History:
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*
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* Date Name Description
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* 06/25/2001 grhoten Move iostream from unistr.h to here
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******************************************************************************
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*/
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#include "unicode/utypes.h"
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#include "unicode/uobject.h"
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#include "unicode/ustream.h"
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#include "unicode/ucnv.h"
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#include "unicode/uchar.h"
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#include "ustr_cnv.h"
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#include <string.h>
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// console IO
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#if U_IOSTREAM_SOURCE >= 198506
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#if U_IOSTREAM_SOURCE >= 199711
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#define STD_NAMESPACE std::
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#else
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#define STD_NAMESPACE
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#endif
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#define STD_OSTREAM STD_NAMESPACE ostream
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#define STD_ISTREAM STD_NAMESPACE istream
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U_NAMESPACE_BEGIN
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U_IO_API STD_OSTREAM & U_EXPORT2
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operator<<(STD_OSTREAM& stream, const UnicodeString& str)
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{
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if(str.length() > 0) {
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char buffer[200];
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UConverter *converter;
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UErrorCode errorCode = U_ZERO_ERROR;
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// use the default converter to convert chunks of text
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converter = u_getDefaultConverter(&errorCode);
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if(U_SUCCESS(errorCode)) {
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const UChar *us = str.getBuffer();
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const UChar *uLimit = us + str.length();
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char *s, *sLimit = buffer + sizeof(buffer);
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do {
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errorCode = U_ZERO_ERROR;
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s = buffer;
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ucnv_fromUnicode(converter, &s, sLimit, &us, uLimit, 0, FALSE, &errorCode);
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// write this chunk
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if(s > buffer) {
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stream.write(buffer, s - buffer);
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}
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} while(errorCode == U_BUFFER_OVERFLOW_ERROR);
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u_releaseDefaultConverter(converter);
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}
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}
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/* stream.flush();*/
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return stream;
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}
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U_IO_API STD_ISTREAM & U_EXPORT2
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operator>>(STD_ISTREAM& stream, UnicodeString& str)
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{
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/* ipfx should eat whitespace when ios::skipws is set */
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UChar uBuffer[16];
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char buffer[16];
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int32_t idx = 0;
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UConverter *converter;
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UErrorCode errorCode = U_ZERO_ERROR;
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str.truncate(0);
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// use the default converter to convert chunks of text
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converter = u_getDefaultConverter(&errorCode);
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if(U_SUCCESS(errorCode)) {
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UChar *us = uBuffer;
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const UChar *uLimit = uBuffer + sizeof(uBuffer)/sizeof(*uBuffer);
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const char *s, *sLimit;
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char ch;
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UChar ch32;
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UBool intialWhitespace = TRUE;
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/* We need to consume one byte at a time to see what is considered whitespace. */
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while (!stream.eof()) {
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ch = stream.get();
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sLimit = &ch + 1;
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errorCode = U_ZERO_ERROR;
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us = uBuffer;
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s = &ch;
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ucnv_toUnicode(converter, &us, uLimit, &s, sLimit, 0, FALSE, &errorCode);
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if(U_FAILURE(errorCode)) {
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/* Something really bad happened */
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return stream;
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}
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/* Was the character consumed? */
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if (us != uBuffer) {
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U16_GET(uBuffer, 0, 0, us-uBuffer, ch32);
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if (u_isWhitespace(ch32)) {
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if (!intialWhitespace) {
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buffer[idx++] = ch;
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while (idx > 0) {
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stream.putback(buffer[--idx]);
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}
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break;
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}
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/* else skip intialWhitespace */
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}
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else {
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str.append(ch32);
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intialWhitespace = FALSE;
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}
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idx = 0;
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}
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else {
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buffer[idx++] = ch;
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}
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}
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u_releaseDefaultConverter(converter);
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}
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/* stream.flush();*/
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return stream;
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}
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U_NAMESPACE_END
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#endif
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