Index: icu46/source/io/ustream.cpp |
=================================================================== |
--- icu46/source/io/ustream.cpp (revision 0) |
+++ icu46/source/io/ustream.cpp (revision 0) |
@@ -0,0 +1,172 @@ |
+/* |
+********************************************************************** |
+* 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 |
+ |
Property changes on: icu46/source/io/ustream.cpp |
___________________________________________________________________ |
Added: svn:eol-style |
+ LF |