| /* |
| ********************************************************************** |
| * Copyright (C) 2001-2010, International Business Machines |
| * Corporation and others. All Rights Reserved. |
| ********************************************************************** |
| * FILE NAME : ustream.cpp |
| * |
| * Modification History: |
| * |
| * Date Name Description |
| * 06/25/2001 grhoten Move iostream from unistr.h to here |
| ****************************************************************************** |
| */ |
| |
| |
| #include "unicode/utypes.h" |
| #include "unicode/uobject.h" |
| #include "unicode/ustream.h" |
| #include "unicode/ucnv.h" |
| #include "unicode/uchar.h" |
| #include "ustr_cnv.h" |
| #include "cmemory.h" |
| #include <string.h> |
| |
| // console IO |
| |
| #if U_IOSTREAM_SOURCE >= 198506 |
| |
| #if U_IOSTREAM_SOURCE >= 199711 |
| #define STD_NAMESPACE std:: |
| #else |
| #define STD_NAMESPACE |
| #endif |
| |
| #define STD_OSTREAM STD_NAMESPACE ostream |
| #define STD_ISTREAM STD_NAMESPACE istream |
| |
| U_NAMESPACE_BEGIN |
| |
| U_IO_API STD_OSTREAM & U_EXPORT2 |
| operator<<(STD_OSTREAM& stream, const UnicodeString& str) |
| { |
| if(str.length() > 0) { |
| char buffer[200]; |
| UConverter *converter; |
| UErrorCode errorCode = U_ZERO_ERROR; |
| |
| // use the default converter to convert chunks of text |
| converter = u_getDefaultConverter(&errorCode); |
| if(U_SUCCESS(errorCode)) { |
| const UChar *us = str.getBuffer(); |
| const UChar *uLimit = us + str.length(); |
| char *s, *sLimit = buffer + (sizeof(buffer) - 1); |
| do { |
| errorCode = U_ZERO_ERROR; |
| s = buffer; |
| ucnv_fromUnicode(converter, &s, sLimit, &us, uLimit, 0, FALSE, &errorCode); |
| *s = 0; |
| |
| // write this chunk |
| if(s > buffer) { |
| stream << buffer; |
| } |
| } while(errorCode == U_BUFFER_OVERFLOW_ERROR); |
| u_releaseDefaultConverter(converter); |
| } |
| } |
| |
| /* stream.flush();*/ |
| return stream; |
| } |
| |
| U_IO_API STD_ISTREAM & U_EXPORT2 |
| operator>>(STD_ISTREAM& stream, UnicodeString& str) |
| { |
| // This is like ICU status checking. |
| if (stream.fail()) { |
| return stream; |
| } |
| |
| /* ipfx should eat whitespace when ios::skipws is set */ |
| UChar uBuffer[16]; |
| char buffer[16]; |
| int32_t idx = 0; |
| UConverter *converter; |
| UErrorCode errorCode = U_ZERO_ERROR; |
| |
| // use the default converter to convert chunks of text |
| converter = u_getDefaultConverter(&errorCode); |
| if(U_SUCCESS(errorCode)) { |
| UChar *us = uBuffer; |
| const UChar *uLimit = uBuffer + sizeof(uBuffer)/sizeof(*uBuffer); |
| const char *s, *sLimit; |
| char ch; |
| UChar ch32; |
| UBool initialWhitespace = TRUE; |
| UBool continueReading = TRUE; |
| |
| /* We need to consume one byte at a time to see what is considered whitespace. */ |
| while (continueReading) { |
| ch = stream.get(); |
| if (stream.eof()) { |
| // The EOF is only set after the get() of an unavailable byte. |
| if (!initialWhitespace) { |
| stream.clear(stream.eofbit); |
| } |
| continueReading = FALSE; |
| } |
| sLimit = &ch + (int)continueReading; |
| us = uBuffer; |
| s = &ch; |
| errorCode = U_ZERO_ERROR; |
| /* |
| Since we aren't guaranteed to see the state before this call, |
| this code won't work on stateful encodings like ISO-2022 or an EBCDIC stateful encoding. |
| We flush on the last byte to ensure that we output truncated multibyte characters. |
| */ |
| ucnv_toUnicode(converter, &us, uLimit, &s, sLimit, 0, !continueReading, &errorCode); |
| if(U_FAILURE(errorCode)) { |
| /* Something really bad happened. setstate() isn't always an available API */ |
| stream.clear(stream.failbit); |
| goto STOP_READING; |
| } |
| /* Was the character consumed? */ |
| if (us != uBuffer) { |
| /* Reminder: ibm-1390 & JISX0213 can output 2 Unicode code points */ |
| int32_t uBuffSize = us-uBuffer; |
| int32_t uBuffIdx = 0; |
| while (uBuffIdx < uBuffSize) { |
| U16_NEXT(uBuffer, uBuffIdx, uBuffSize, ch32); |
| if (u_isWhitespace(ch32)) { |
| if (!initialWhitespace) { |
| buffer[idx++] = ch; |
| while (idx > 0) { |
| stream.putback(buffer[--idx]); |
| } |
| goto STOP_READING; |
| } |
| /* else skip intialWhitespace */ |
| } |
| else { |
| if (initialWhitespace) { |
| /* |
| When initialWhitespace is TRUE, we haven't appended any |
| character yet. This is where we truncate the string, |
| to avoid modifying the string before we know if we can |
| actually read from the stream. |
| */ |
| str.truncate(0); |
| initialWhitespace = FALSE; |
| } |
| str.append(ch32); |
| } |
| } |
| idx = 0; |
| } |
| else { |
| buffer[idx++] = ch; |
| } |
| } |
| STOP_READING: |
| u_releaseDefaultConverter(converter); |
| } |
| |
| /* stream.flush();*/ |
| return stream; |
| } |
| |
| U_NAMESPACE_END |
| |
| #endif |
| |