| -rw-r--r-- | qmake/tools/qtextstream.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/qmake/tools/qtextstream.cpp b/qmake/tools/qtextstream.cpp index 75c6531..ddca5bd 100644 --- a/qmake/tools/qtextstream.cpp +++ b/qmake/tools/qtextstream.cpp @@ -1,2593 +1,2593 @@ /**************************************************************************** ** $Id$ ** ** Implementation of QTextStream class ** ** Created : 940922 ** ** Copyright (C) 1992-2002 Trolltech AS. All rights reserved. ** ** This file is part of the tools module of the Qt GUI Toolkit. ** ** This file may be distributed under the terms of the Q Public License ** as defined by Trolltech AS of Norway and appearing in the file ** LICENSE.QPL included in the packaging of this file. ** ** This file may be distributed and/or modified under the terms of the ** GNU General Public License version 2 as published by the Free Software ** Foundation and appearing in the file LICENSE.GPL included in the ** packaging of this file. ** ** Licensees holding valid Qt Enterprise Edition or Qt Professional Edition ** licenses may use this file in accordance with the Qt Commercial License ** Agreement provided with the Software. ** ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. ** ** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for ** information about Qt Commercial License Agreements. ** See http://www.trolltech.com/qpl/ for QPL licensing information. ** See http://www.trolltech.com/gpl/ for GPL licensing information. ** ** Contact info@trolltech.com if any conditions of this licensing are ** not clear to you. ** **********************************************************************/ #include "qtextstream.h" #ifndef QT_NO_TEXTSTREAM #include "qtextcodec.h" #include "qregexp.h" #include "qbuffer.h" #include "qfile.h" #include <stdio.h> #include <ctype.h> #include <stdlib.h> #if defined(Q_OS_WIN32) #include <windows.h> #endif /*! \class QTextStream qtextstream.h \reentrant \brief The QTextStream class provides basic functions for reading and writing text using a QIODevice. \ingroup io \ingroup text \mainclass The text stream class has a functional interface that is very similar to that of the standard C++ iostream class. Qt provides several global functions similar to the ones in iostream: \table \header \i Function \i Meaning \row \i bin \i sets the QTextStream to read/write binary numbers \row \i oct \i sets the QTextStream to read/write octal numbers \row \i dec \i sets the QTextStream to read/write decimal numbers \row \i hex \i sets the QTextStream to read/write hexadecimal numbers \row \i endl \i forces a line break \row \i flush \i forces the QIODevice to flush any buffered data \row \i ws \i eats any available whitespace (on input) \row \i reset \i resets the QTextStream to its default mode (see reset()) \row \i qSetW(int) \i sets the \link width() field width \endlink to the given argument \row \i qSetFill(int) \i sets the \link fill() fill character \endlink to the given argument \row \i qSetPrecision(int) \i sets the \link precision() precision \endlink to the given argument \endtable \warning By default QTextStream will automatically detect whether integers in the stream are in decimal, octal, hexadecimal or binary format when reading from the stream. In particular, a leading '0' signifies octal, i.e. the sequence "0100" will be interpreted as 64. The QTextStream class reads and writes text; it is not appropriate for dealing with binary data (but QDataStream is). By default, output of Unicode text (i.e. QString) is done using the local 8-bit encoding. This can be changed using the setEncoding() method. For input, the QTextStream will auto-detect standard Unicode "byte order marked" text files; otherwise the local 8-bit encoding is used. The QIODevice is set in the constructor, or later using setDevice(). If the end of the input is reached atEnd() returns TRUE. Data can be read into variables of the appropriate type using the operator>>() overloads, or read in its entirety into a single string using read(), or read a line at a time using readLine(). Whitespace can be skipped over using skipWhiteSpace(). You can set flags for the stream using flags() or setf(). The stream also supports width(), precision() and fill(); use reset() to reset the defaults. \sa QDataStream */ /*! \enum QTextStream::Encoding \value Locale \value Latin1 \value Unicode \value UnicodeNetworkOrder \value UnicodeReverse \value RawUnicode \value UnicodeUTF8 See setEncoding() for an explanation of the encodings. */ /* \class QTSManip \brief The QTSManip class is an internal helper class for the QTextStream. It is generally a very bad idea to use this class directly in application programs. \internal This class makes it possible to give the QTextStream function objects with arguments, like this: \code QTextStream cout( stdout, IO_WriteOnly ); cout << setprecision( 8 ); // QTSManip used here! cout << 3.14159265358979323846; \endcode The setprecision() function returns a QTSManip object. The QTSManip object contains a pointer to a member function in QTextStream and an integer argument. When serializing a QTSManip into a QTextStream, the function is executed with the argument. */ /*! \fn QTSManip::QTSManip( QTSMFI m, int a ) Constructs a QTSManip object which will call \a m (a member function in QTextStream which accepts a single int) with argument \a a when QTSManip::exec() is called. Used internally in e.g. endl: \code s << "some text" << endl << "more text"; \endcode */ /*! \fn void QTSManip::exec( QTextStream& s ) Calls the member function specified in the constructor, for object \a s. Used internally in e.g. endl: \code s << "some text" << endl << "more text"; \endcode */ /***************************************************************************** QTextStream member functions *****************************************************************************/ #if defined(QT_CHECK_STATE) #undef CHECK_STREAM_PRECOND #define CHECK_STREAM_PRECOND if ( !dev ) { \ qWarning( "QTextStream: No device" ); \ return *this; } #else #define CHECK_STREAM_PRECOND #endif #define I_SHORT 0x0010 #define I_INT 0x0020 #define I_LONG 0x0030 #define I_TYPE_MASK 0x00f0 #define I_BASE_2 QTS::bin #define I_BASE_8 QTS::oct #define I_BASE_10 QTS::dec #define I_BASE_16 QTS::hex #define I_BASE_MASK (QTS::bin | QTS::oct | QTS::dec | QTS::hex) #define I_SIGNED 0x0100 #define I_UNSIGNED 0x0200 #define I_SIGN_MASK 0x0f00 static const QChar QEOF = QChar((ushort)0xffff); //guaranteed not to be a character. static const uint getline_buf_size = 256; // bufsize used by ts_getline() const int QTextStream::basefield = I_BASE_MASK; const int QTextStream::adjustfield = ( QTextStream::left | QTextStream::right | QTextStream::internal ); const int QTextStream::floatfield = ( QTextStream::scientific | QTextStream::fixed ); class QTextStreamPrivate { public: #ifndef QT_NO_TEXTCODEC QTextStreamPrivate() : decoder( 0 ), encoder( 0 ), sourceType( NotSet ) { } ~QTextStreamPrivate() { delete decoder; delete encoder; } QTextDecoder *decoder; QTextEncoder *encoder; #else QTextStreamPrivate() : sourceType( NotSet ) { } ~QTextStreamPrivate() { } #endif QString ungetcBuf; enum SourceType { NotSet, IODevice, String, ByteArray, File }; SourceType sourceType; }; // skips whitespace and returns the first non-whitespace character QChar QTextStream::eat_ws() { QChar c; do { c = ts_getc(); } while ( c != QEOF && ts_isspace(c) ); return c; } void QTextStream::init() { // ### ungetcBuf = QEOF; dev = 0; owndev = FALSE; mapper = 0; d = new QTextStreamPrivate; doUnicodeHeader = TRUE; // autodetect latin1 = TRUE; // should use locale? internalOrder = QChar::networkOrdered(); networkOrder = TRUE; } /*! Constructs a data stream that has no IO device. */ QTextStream::QTextStream() { init(); setEncoding( Locale ); //### reset(); d->sourceType = QTextStreamPrivate::NotSet; } /*! Constructs a text stream that uses the IO device \a iod. */ QTextStream::QTextStream( QIODevice *iod ) { init(); setEncoding( Locale ); //### dev = iod; reset(); d->sourceType = QTextStreamPrivate::IODevice; } // TODO: use special-case handling of this case in QTextStream, and // simplify this class to only deal with QChar or QString data. class QStringBuffer : public QIODevice { public: QStringBuffer( QString* str ); ~QStringBuffer(); bool open( int m ); void close(); void flush(); Offset size() const; Offset at() const; bool at( Offset pos ); Q_LONG readBlock( char *p, Q_ULONG len ); Q_LONG writeBlock( const char *p, Q_ULONG len ); int getch(); int putch( int ch ); int ungetch( int ch ); protected: QString* s; private: // Disabled copy constructor and operator= QStringBuffer( const QStringBuffer & ); QStringBuffer &operator=( const QStringBuffer & ); }; QStringBuffer::QStringBuffer( QString* str ) { s = str; } QStringBuffer::~QStringBuffer() { } bool QStringBuffer::open( int m ) { if ( !s ) { #if defined(QT_CHECK_STATE) qWarning( "QStringBuffer::open: No string" ); #endif return FALSE; } if ( isOpen() ) { // buffer already open #if defined(QT_CHECK_STATE) qWarning( "QStringBuffer::open: Buffer already open" ); #endif return FALSE; } setMode( m ); if ( m & IO_Truncate ) { // truncate buffer s->truncate( 0 ); } if ( m & IO_Append ) { // append to end of buffer ioIndex = s->length()*sizeof(QChar); } else { ioIndex = 0; } setState( IO_Open ); setStatus( 0 ); return TRUE; } void QStringBuffer::close() { if ( isOpen() ) { setFlags( IO_Direct ); ioIndex = 0; } } void QStringBuffer::flush() { } QIODevice::Offset QStringBuffer::size() const { return s ? s->length()*sizeof(QChar) : 0; } QIODevice::Offset QStringBuffer::at() const { return ioIndex; } bool QStringBuffer::at( Offset pos ) { #if defined(QT_CHECK_STATE) if ( !isOpen() ) { qWarning( "QStringBuffer::at: Buffer is not open" ); return FALSE; } #endif if ( pos >= s->length()*2 ) { #if defined(QT_CHECK_RANGE) #if defined(QT_LARGEFILE_SUPPORT) && defined(QT_ABI_64BITOFFSET) qWarning( "QStringBuffer::at: Index %llu out of range", pos ); #else qWarning( "QStringBuffer::at: Index %lu out of range", pos ); #endif #endif return FALSE; } ioIndex = pos; return TRUE; } Q_LONG QStringBuffer::readBlock( char *p, Q_ULONG len ) { #if defined(QT_CHECK_STATE) Q_CHECK_PTR( p ); if ( !isOpen() ) { // buffer not open qWarning( "QStringBuffer::readBlock: Buffer not open" ); return -1; } if ( !isReadable() ) { // reading not permitted qWarning( "QStringBuffer::readBlock: Read operation not permitted" ); return -1; } #endif if ( ioIndex + len > s->length()*sizeof(QChar) ) { // overflow if ( (uint)ioIndex >= s->length()*sizeof(QChar) ) { setStatus( IO_ReadError ); return -1; } else { len = s->length()*2 - (uint)ioIndex; } } memcpy( p, ((const char*)(s->unicode()))+ioIndex, len ); ioIndex += len; return len; } Q_LONG QStringBuffer::writeBlock( const char *p, Q_ULONG len ) { #if defined(QT_CHECK_NULL) if ( p == 0 && len != 0 ) qWarning( "QStringBuffer::writeBlock: Null pointer error" ); #endif #if defined(QT_CHECK_STATE) if ( !isOpen() ) { // buffer not open qWarning( "QStringBuffer::writeBlock: Buffer not open" ); return -1; } if ( !isWritable() ) { // writing not permitted qWarning( "QStringBuffer::writeBlock: Write operation not permitted" ); return -1; } if ( ioIndex&1 ) { qWarning( "QStringBuffer::writeBlock: non-even index - non Unicode" ); return -1; } if ( len&1 ) { qWarning( "QStringBuffer::writeBlock: non-even length - non Unicode" ); return -1; } #endif s->replace(ioIndex/2, len/2, (QChar*)p, len/2); ioIndex += len; return len; } int QStringBuffer::getch() { #if defined(QT_CHECK_STATE) if ( !isOpen() ) { // buffer not open qWarning( "QStringBuffer::getch: Buffer not open" ); return -1; } if ( !isReadable() ) { // reading not permitted qWarning( "QStringBuffer::getch: Read operation not permitted" ); return -1; } #endif if ( (uint)ioIndex >= s->length()*2 ) { // overflow setStatus( IO_ReadError ); return -1; } return (int) *( (const char *) s->unicode() + ioIndex++ ); } int QStringBuffer::putch( int ch ) { char c = ch; if ( writeBlock(&c,1) < 0 ) return -1; else return ch; } int QStringBuffer::ungetch( int ch ) { #if defined(QT_CHECK_STATE) if ( !isOpen() ) { // buffer not open qWarning( "QStringBuffer::ungetch: Buffer not open" ); return -1; } if ( !isReadable() ) { // reading not permitted qWarning( "QStringBuffer::ungetch: Read operation not permitted" ); return -1; } #endif if ( ch != -1 ) { // something to do with eof if ( ioIndex ) ioIndex--; else ch = -1; } return ch; } /*! Constructs a text stream that operates on the Unicode QString, \a str, through an internal device. The \a filemode argument is passed to the device's open() function; see \l{QIODevice::mode()}. If you set an encoding or codec with setEncoding() or setCodec(), this setting is ignored for text streams that operate on QString. Example: \code QString str; QTextStream ts( &str, IO_WriteOnly ); ts << "pi = " << 3.14; // str == "pi = 3.14" \endcode Writing data to the text stream will modify the contents of the string. The string will be expanded when data is written beyond the end of the string. Note that the string will not be truncated: \code QString str = "pi = 3.14"; QTextStream ts( &str, IO_WriteOnly ); ts << "2+2 = " << 2+2; // str == "2+2 = 414" \endcode Note that because QString is Unicode, you should not use readRawBytes() or writeRawBytes() on such a stream. */ QTextStream::QTextStream( QString* str, int filemode ) { // TODO: optimize for this case as it becomes more common // (see QStringBuffer above) init(); dev = new QStringBuffer( str ); ((QStringBuffer *)dev)->open( filemode ); owndev = TRUE; setEncoding(RawUnicode); reset(); d->sourceType = QTextStreamPrivate::String; } /*! \obsolete This constructor is equivalent to the constructor taking a QString* parameter. */ QTextStream::QTextStream( QString& str, int filemode ) { init(); dev = new QStringBuffer( &str ); ((QStringBuffer *)dev)->open( filemode ); owndev = TRUE; setEncoding(RawUnicode); reset(); d->sourceType = QTextStreamPrivate::String; } /*! Constructs a text stream that operates on the byte array, \a a, through an internal QBuffer device. The \a mode argument is passed to the device's open() function; see \l{QIODevice::mode()}. Example: \code QByteArray array; QTextStream ts( array, IO_WriteOnly ); ts << "pi = " << 3.14 << '\0'; // array == "pi = 3.14" \endcode Writing data to the text stream will modify the contents of the array. The array will be expanded when data is written beyond the end of the string. Same example, using a QBuffer: \code QByteArray array; QBuffer buf( array ); buf.open( IO_WriteOnly ); QTextStream ts( &buf ); ts << "pi = " << 3.14 << '\0'; // array == "pi = 3.14" buf.close(); \endcode */ QTextStream::QTextStream( QByteArray a, int mode ) { init(); dev = new QBuffer( a ); ((QBuffer *)dev)->open( mode ); owndev = TRUE; setEncoding( Latin1 ); //### Locale??? reset(); d->sourceType = QTextStreamPrivate::ByteArray; } /*! Constructs a text stream that operates on an existing file handle \a fh through an internal QFile device. The \a mode argument is passed to the device's open() function; see \l{QIODevice::mode()}. Note that if you create a QTextStream \c cout or another name that is also used for another variable of a different type, some linkers may confuse the two variables, which will often cause crashes. */ QTextStream::QTextStream( FILE *fh, int mode ) { init(); setEncoding( Locale ); //### dev = new QFile; ((QFile *)dev)->open( mode, fh ); owndev = TRUE; reset(); d->sourceType = QTextStreamPrivate::File; } /*! Destroys the text stream. The destructor does not affect the current IO device. */ QTextStream::~QTextStream() { if ( owndev ) delete dev; delete d; } /*! Positions the read pointer at the first non-whitespace character. */ void QTextStream::skipWhiteSpace() { ts_ungetc( eat_ws() ); } /*! Tries to read \a len characters from the stream and stores them in \a buf. Returns the number of characters really read. \warning There will no QEOF appended if the read reaches the end of the file. EOF is reached when the return value does not equal \a len. */ uint QTextStream::ts_getbuf( QChar* buf, uint len ) { if( len < 1 ) return 0; uint rnum=0; // the number of QChars really read if ( d && d->ungetcBuf.length() ) { while( rnum < len && rnum < d->ungetcBuf.length() ) { *buf = d->ungetcBuf.constref( rnum ); buf++; rnum++; } d->ungetcBuf = d->ungetcBuf.mid( rnum ); if ( rnum >= len ) return rnum; } // we use dev->ungetch() for one of the bytes of the unicode // byte-order mark, but a local unget hack for the other byte: int ungetHack = EOF; if ( doUnicodeHeader ) { doUnicodeHeader = FALSE; // only at the top int c1 = dev->getch(); if ( c1 == EOF ) return rnum; int c2 = dev->getch(); if ( c1 == 0xfe && c2 == 0xff ) { mapper = 0; latin1 = FALSE; internalOrder = QChar::networkOrdered(); networkOrder = TRUE; } else if ( c1 == 0xff && c2 == 0xfe ) { mapper = 0; latin1 = FALSE; internalOrder = !QChar::networkOrdered(); networkOrder = FALSE; } else { if ( c2 != EOF ) { dev->ungetch( c2 ); ungetHack = c1; } else { /* A small bug might hide here. If only the first byte of a file has made it so far, and that first byte is half of the byte-order mark, then the utfness will not be detected. */ dev->ungetch( c1 ); } } } #ifndef QT_NO_TEXTCODEC if ( mapper ) { bool shortRead = FALSE; if ( !d->decoder ) d->decoder = mapper->makeDecoder(); while( rnum < len ) { QString s; bool readBlock = !( len == 1+rnum ); for (;;) { // for efficiency: normally read a whole block if ( readBlock ) { // guess buffersize; this may be wrong (too small or too // big). But we can handle this (either iterate reading // or use ungetcBuf). // Note that this might cause problems for codecs where // one byte can result in >1 Unicode Characters if bytes // are written to the stream in the meantime (loss of // synchronicity). uint rlen = len - rnum; char *cbuf = new char[ rlen ]; if ( ungetHack != EOF ) { rlen = 1+dev->readBlock( cbuf+1, rlen-1 ); cbuf[0] = (char)ungetHack; ungetHack = EOF; } else { rlen = dev->readBlock( cbuf, rlen ); } s += d->decoder->toUnicode( cbuf, rlen ); delete[] cbuf; // use buffered reading only for the first time, because we // have to get the stream synchronous again (this is easier // with single character reading) readBlock = FALSE; } // get stream (and codec) in sync int c; if ( ungetHack == EOF ) { c = dev->getch(); } else { c = ungetHack; ungetHack = EOF; } if ( c == EOF ) { shortRead = TRUE; break; } char b = c; uint lengthBefore = s.length(); s += d->decoder->toUnicode( &b, 1 ); if ( s.length() > lengthBefore ) break; // it seems we are in sync now } uint i = 0; uint end = QMIN( len-rnum, s.length() ); while( i < end ) { *buf = s.constref(i++); buf++; } rnum += end; if ( s.length() > i ) // could be = but append is clearer d->ungetcBuf.append( s.mid( i ) ); if ( shortRead ) return rnum; } } else #endif if ( latin1 ) { if ( len == 1+rnum ) { // use this method for one character because it is more efficient // (arnt doubts whether it makes a difference, but lets it stand) int c = (ungetHack == EOF) ? dev->getch() : ungetHack; if ( c != EOF ) { *buf = (char)c; buf++; rnum++; } } else { if ( ungetHack != EOF ) { *buf = (char)ungetHack; buf++; rnum++; ungetHack = EOF; } char *cbuf = new char[len - rnum]; while ( !dev->atEnd() && rnum < len ) { uint rlen = len - rnum; rlen = dev->readBlock( cbuf, rlen ); char *it = cbuf; char *end = cbuf + rlen; while ( it < end ) { *buf = *it; buf++; it++; } rnum += rlen; } delete[] cbuf; } } else { // UCS-2 or UTF-16 if ( len == 1+rnum ) { int c1 = (ungetHack == EOF) ? dev->getch() : ungetHack; if ( c1 == EOF ) return rnum; int c2 = dev->getch(); if ( c2 == EOF ) return rnum; if ( networkOrder ) { *buf = QChar( c2, c1 ); } else { *buf = QChar( c1, c2 ); } buf++; rnum++; } else { char *cbuf = new char[ 2*( len - rnum ) ]; // for paranoids: overflow possible while ( !dev->atEnd() && rnum < len ) { uint rlen = 2 * ( len-rnum ); if ( ungetHack != EOF ) { rlen = 1+dev->readBlock( cbuf+1, rlen-1 ); cbuf[0] = (char)ungetHack; ungetHack = EOF; } else { rlen = dev->readBlock( cbuf, rlen ); } // We can't use an odd number of bytes, so put it back. But // do it only if we are capable of reading more -- normally // there should not be an odd number, but the file might be // truncated or not in UTF-16... if ( (rlen & 1) == 1 ) if ( !dev->atEnd() ) dev->ungetch( cbuf[--rlen] ); uint i = 0; if ( networkOrder ) { while( i < rlen ) { *buf = QChar( cbuf[i+1], cbuf[i] ); buf++; i+=2; } } else { while( i < rlen ) { *buf = QChar( cbuf[i], cbuf[i+1] ); buf++; i+=2; } } rnum += i/2; } delete[] cbuf; } } return rnum; } /*! Tries to read one line, but at most len characters from the stream and stores them in \a buf. Returns the number of characters really read. Newlines are not stripped. There will be a QEOF appended if the read reaches the end of file; this is different to ts_getbuf(). This function works only if a newline (as byte) is also a newline (as resulting character) since it uses QIODevice::readLine(). So use it only for such codecs where this is true! This function is (almost) a no-op for UTF 16. Don't use it if doUnicodeHeader is TRUE! */ uint QTextStream::ts_getline( QChar* buf ) { uint rnum=0; // the number of QChars really read char cbuf[ getline_buf_size+1 ]; if ( d && d->ungetcBuf.length() ) { while( rnum < getline_buf_size && rnum < d->ungetcBuf.length() ) { buf[rnum] = d->ungetcBuf.constref(rnum); rnum++; } d->ungetcBuf = d->ungetcBuf.mid( rnum ); if ( rnum >= getline_buf_size ) return rnum; } #ifndef QT_NO_TEXTCODEC if ( mapper ) { if ( !d->decoder ) d->decoder = mapper->makeDecoder(); QString s; bool readBlock = TRUE; for (;;) { // for efficiency: try to read a line if ( readBlock ) { int rlen = getline_buf_size - rnum; rlen = dev->readLine( cbuf, rlen+1 ); if ( rlen == -1 ) rlen = 0; s += d->decoder->toUnicode( cbuf, rlen ); readBlock = FALSE; } if ( dev->atEnd() || s.at( s.length()-1 ) == '\n' || s.at( s.length()-1 ) == '\r' ) { break; } else { // get stream (and codec) in sync int c; c = dev->getch(); if ( c == EOF ) { break; } char b = c; uint lengthBefore = s.length(); s += d->decoder->toUnicode( &b, 1 ); if ( s.length() > lengthBefore ) break; // it seems we are in sync now } } uint i = 0; while( rnum < getline_buf_size && i < s.length() ) buf[rnum++] = s.constref(i++); if ( s.length() > i ) // could be = but append is clearer d->ungetcBuf.append( s.mid( i ) ); if ( rnum < getline_buf_size && dev->atEnd() ) buf[rnum++] = QEOF; } else #endif if ( latin1 ) { int rlen = getline_buf_size - rnum; rlen = dev->readLine( cbuf, rlen+1 ); if ( rlen == -1 ) rlen = 0; char *end = cbuf+rlen; char *it = cbuf; buf +=rnum; while ( it != end ) { buf->setCell( *(it++) ); buf->setRow( 0 ); buf++; } rnum += rlen; if ( rnum < getline_buf_size && dev->atEnd() ) buf[1] = QEOF; } return rnum; } /*! Puts one character into the stream. */ void QTextStream::ts_putc( QChar c ) { #ifndef QT_NO_TEXTCODEC if ( mapper ) { if ( !d->encoder ) d->encoder = mapper->makeEncoder(); int len = 1; QString s = c; QCString block = d->encoder->fromUnicode( s, len ); dev->writeBlock( block, len ); } else #endif if ( latin1 ) { if ( c.row() ) dev->putch( '?' ); // unknown character else dev->putch( c.cell() ); } else { if ( doUnicodeHeader ) { doUnicodeHeader = FALSE; ts_putc( QChar::byteOrderMark ); } if ( internalOrder ) { // this case is needed by QStringBuffer dev->writeBlock( (char*)&c, sizeof(QChar) ); } else if ( networkOrder ) { dev->putch( c.row() ); dev->putch( c.cell() ); } else { dev->putch( c.cell() ); dev->putch( c.row() ); } } } /*! Puts one character into the stream. */ void QTextStream::ts_putc( int ch ) { ts_putc( QChar((ushort)ch) ); } bool QTextStream::ts_isdigit( QChar c ) { return c.isDigit(); } bool QTextStream::ts_isspace( QChar c ) { return c.isSpace(); } void QTextStream::ts_ungetc( QChar c ) { if ( c.unicode() == 0xffff ) return; d->ungetcBuf.prepend( c ); } /*! Reads \a len bytes from the stream into \a s and returns a reference to the stream. The buffer \a s must be preallocated. Note that no encoding is done by this function. \warning The behavior of this function is undefined unless the stream's encoding is set to Unicode or Latin1. \sa QIODevice::readBlock() */ QTextStream &QTextStream::readRawBytes( char *s, uint len ) { dev->readBlock( s, len ); return *this; } /*! Writes the \a len bytes from \a s to the stream and returns a reference to the stream. Note that no encoding is done by this function. \sa QIODevice::writeBlock() */ QTextStream &QTextStream::writeRawBytes( const char* s, uint len ) { dev->writeBlock( s, len ); return *this; } QTextStream &QTextStream::writeBlock( const char* p, uint len ) { if ( doUnicodeHeader ) { doUnicodeHeader = FALSE; if ( !mapper && !latin1 ) ts_putc( QChar::byteOrderMark ); } // QCString and const char * are treated as Latin-1 if ( !mapper && latin1 ) { dev->writeBlock( p, len ); } else if ( !mapper && internalOrder ) { QChar *u = new QChar[len]; for ( uint i = 0; i < len; i++ ) u[i] = p[i]; dev->writeBlock( (char*)u, len * sizeof(QChar) ); delete [] u; } else { for ( uint i = 0; i < len; i++ ) ts_putc( (uchar)p[i] ); } return *this; } QTextStream &QTextStream::writeBlock( const QChar* p, uint len ) { #ifndef QT_NO_TEXTCODEC if ( mapper ) { if ( !d->encoder ) d->encoder = mapper->makeEncoder(); QConstString s( p, len ); int l = len; QCString block = d->encoder->fromUnicode( s.string(), l ); dev->writeBlock( block, l ); } else #endif if ( latin1 ) { - char *str = QString::unicodeToAscii( p, len ); + char *str = QString::unicodeToLatin1( p, len ); dev->writeBlock( str, len ); delete [] str; } else if ( internalOrder ) { if ( doUnicodeHeader ) { doUnicodeHeader = FALSE; ts_putc( QChar::byteOrderMark ); } dev->writeBlock( (char*)p, sizeof(QChar)*len ); } else { for (uint i=0; i<len; i++) ts_putc( p[i] ); } return *this; } /*! Resets the text stream. \list \i All flags are set to 0. \i The field width is set to 0. \i The fill character is set to ' ' (Space). \i The precision is set to 6. \endlist \sa setf(), width(), fill(), precision() */ void QTextStream::reset() { fflags = 0; fwidth = 0; fillchar = ' '; fprec = 6; } /*! \fn QIODevice *QTextStream::device() const Returns the IO device currently set. \sa setDevice(), unsetDevice() */ /*! Sets the IO device to \a iod. \sa device(), unsetDevice() */ void QTextStream::setDevice( QIODevice *iod ) { if ( owndev ) { delete dev; owndev = FALSE; } dev = iod; d->sourceType = QTextStreamPrivate::IODevice; } /*! Unsets the IO device. Equivalent to setDevice( 0 ). \sa device(), setDevice() */ void QTextStream::unsetDevice() { setDevice( 0 ); d->sourceType = QTextStreamPrivate::NotSet; } /*! \fn bool QTextStream::atEnd() const Returns TRUE if the IO device has reached the end position (end of the stream or file) or if there is no IO device set; otherwise returns FALSE. \sa QIODevice::atEnd() */ /*!\fn bool QTextStream::eof() const \obsolete This function has been renamed to atEnd(). \sa QIODevice::atEnd() */ /***************************************************************************** QTextStream read functions *****************************************************************************/ /*! \overload Reads a char \a c from the stream and returns a reference to the stream. Note that whitespace is skipped. */ QTextStream &QTextStream::operator>>( char &c ) { CHECK_STREAM_PRECOND c = eat_ws(); return *this; } /*! Reads a char \a c from the stream and returns a reference to the stream. Note that whitespace is \e not skipped. */ QTextStream &QTextStream::operator>>( QChar &c ) { CHECK_STREAM_PRECOND c = ts_getc(); return *this; } ulong QTextStream::input_bin() { ulong val = 0; QChar ch = eat_ws(); int dv = ch.digitValue(); while ( dv == 0 || dv == 1 ) { val = ( val << 1 ) + dv; ch = ts_getc(); dv = ch.digitValue(); } if ( ch != QEOF ) ts_ungetc( ch ); return val; } ulong QTextStream::input_oct() { ulong val = 0; QChar ch = eat_ws(); int dv = ch.digitValue(); while ( dv >= 0 && dv <= 7 ) { val = ( val << 3 ) + dv; ch = ts_getc(); dv = ch.digitValue(); } if ( dv == 8 || dv == 9 ) { while ( ts_isdigit(ch) ) ch = ts_getc(); } if ( ch != QEOF ) ts_ungetc( ch ); return val; } ulong QTextStream::input_dec() { ulong val = 0; QChar ch = eat_ws(); int dv = ch.digitValue(); while ( ts_isdigit(ch) ) { val = val * 10 + dv; ch = ts_getc(); dv = ch.digitValue(); } if ( ch != QEOF ) ts_ungetc( ch ); return val; } ulong QTextStream::input_hex() { ulong val = 0; QChar ch = eat_ws(); char c = ch; while ( isxdigit((uchar) c) ) { val <<= 4; if ( ts_isdigit(c) ) val += c - '0'; else val += 10 + tolower( (uchar) c ) - 'a'; c = ch = ts_getc(); } if ( ch != QEOF ) ts_ungetc( ch ); return val; } long QTextStream::input_int() { long val; QChar ch; char c; switch ( flags() & basefield ) { case bin: val = (long)input_bin(); break; case oct: val = (long)input_oct(); break; case dec: c = ch = eat_ws(); if ( ch == QEOF ) { val = 0; } else { if ( !(c == '-' || c == '+') ) ts_ungetc( ch ); if ( c == '-' ) { ulong v = input_dec(); if ( v ) { // ensure that LONG_MIN can be read v--; val = -((long)v) - 1; } else { val = 0; } } else { val = (long)input_dec(); } } break; case hex: val = (long)input_hex(); break; default: val = 0; c = ch = eat_ws(); if ( c == '0' ) { // bin, oct or hex c = ch = ts_getc(); if ( tolower((uchar) c) == 'x' ) val = (long)input_hex(); else if ( tolower((uchar) c) == 'b' ) val = (long)input_bin(); else { // octal ts_ungetc( ch ); if ( c >= '0' && c <= '7' ) { val = (long)input_oct(); } else { val = 0; } } } else if ( ts_isdigit(ch) ) { ts_ungetc( ch ); val = (long)input_dec(); } else if ( c == '-' || c == '+' ) { ulong v = input_dec(); if ( c == '-' ) { if ( v ) { // ensure that LONG_MIN can be read v--; val = -((long)v) - 1; } else { val = 0; } } else { val = (long)v; } } } return val; } // // We use a table-driven FSM to parse floating point numbers // strtod() cannot be used directly since we're reading from a QIODevice // double QTextStream::input_double() { const int Init = 0; // states const int Sign = 1; const int Mantissa = 2; const int Dot = 3; const int Abscissa = 4; const int ExpMark = 5; const int ExpSign = 6; const int Exponent = 7; const int Done = 8; const int InputSign = 1; // input tokens const int InputDigit = 2; const int InputDot = 3; const int InputExp = 4; static const uchar table[8][5] = { /* None InputSign InputDigit InputDot InputExp */ { 0, Sign, Mantissa, Dot, 0, }, // Init { 0, 0, Mantissa, Dot, 0, }, // Sign { Done, Done, Mantissa, Dot, ExpMark,}, // Mantissa { 0, 0, Abscissa, 0, 0, }, // Dot { Done, Done, Abscissa, Done, ExpMark,}, // Abscissa { 0, ExpSign, Exponent, 0, 0, }, // ExpMark { 0, 0, Exponent, 0, 0, }, // ExpSign { Done, Done, Exponent, Done, Done } // Exponent }; int state = Init; // parse state int input; // input token char buf[256]; int i = 0; QChar c = eat_ws(); for (;;) { switch ( c ) { case '+': case '-': input = InputSign; break; case '0': case '1': case '2': case '3': case '4': case '5': case '6': case '7': case '8': case '9': input = InputDigit; break; case '.': input = InputDot; break; case 'e': case 'E': input = InputExp; break; default: input = 0; break; } state = table[state][input]; if ( state == 0 || state == Done || i > 250 ) { if ( i > 250 ) { // ignore rest of digits do { c = ts_getc(); } while ( c != QEOF && ts_isdigit(c) ); } if ( c != QEOF ) ts_ungetc( c ); buf[i] = '\0'; char *end; return strtod( buf, &end ); } buf[i++] = c; c = ts_getc(); } #if !defined(Q_CC_EDG) return 0.0; #endif } /*! \overload Reads a signed \c short integer \a i from the stream and returns a reference to the stream. See flags() for an explanation of the expected input format. */ QTextStream &QTextStream::operator>>( signed short &i ) { CHECK_STREAM_PRECOND i = (signed short)input_int(); return *this; } /*! \overload Reads an unsigned \c short integer \a i from the stream and returns a reference to the stream. See flags() for an explanation of the expected input format. */ QTextStream &QTextStream::operator>>( unsigned short &i ) { CHECK_STREAM_PRECOND i = (unsigned short)input_int(); return *this; } /*! \overload Reads a signed \c int \a i from the stream and returns a reference to the stream. See flags() for an explanation of the expected input format. */ QTextStream &QTextStream::operator>>( signed int &i ) { CHECK_STREAM_PRECOND i = (signed int)input_int(); return *this; } /*! \overload Reads an unsigned \c int \a i from the stream and returns a reference to the stream. See flags() for an explanation of the expected input format. */ QTextStream &QTextStream::operator>>( unsigned int &i ) { CHECK_STREAM_PRECOND i = (unsigned int)input_int(); return *this; } /*! \overload Reads a signed \c long int \a i from the stream and returns a reference to the stream. See flags() for an explanation of the expected input format. */ QTextStream &QTextStream::operator>>( signed long &i ) { CHECK_STREAM_PRECOND i = (signed long)input_int(); return *this; } /*! \overload Reads an unsigned \c long int \a i from the stream and returns a reference to the stream. See flags() for an explanation of the expected input format. */ QTextStream &QTextStream::operator>>( unsigned long &i ) { CHECK_STREAM_PRECOND i = (unsigned long)input_int(); return *this; } /*! \overload Reads a \c float \a f from the stream and returns a reference to the stream. See flags() for an explanation of the expected input format. */ QTextStream &QTextStream::operator>>( float &f ) { CHECK_STREAM_PRECOND f = (float)input_double(); return *this; } /*! \overload Reads a \c double \a f from the stream and returns a reference to the stream. See flags() for an explanation of the expected input format. */ QTextStream &QTextStream::operator>>( double &f ) { CHECK_STREAM_PRECOND f = input_double(); return *this; } /*! \overload Reads a "word" from the stream into \a s and returns a reference to the stream. A word consists of characters for which isspace() returns FALSE. */ QTextStream &QTextStream::operator>>( char *s ) { CHECK_STREAM_PRECOND int maxlen = width( 0 ); QChar c = eat_ws(); if ( !maxlen ) maxlen = -1; while ( c != QEOF ) { if ( ts_isspace(c) || maxlen-- == 0 ) { ts_ungetc( c ); break; } *s++ = c; c = ts_getc(); } *s = '\0'; return *this; } /*! \overload Reads a "word" from the stream into \a str and returns a reference to the stream. A word consists of characters for which isspace() returns FALSE. */ QTextStream &QTextStream::operator>>( QString &str ) { CHECK_STREAM_PRECOND str=QString::fromLatin1(""); QChar c = eat_ws(); while ( c != QEOF ) { if ( ts_isspace(c) ) { ts_ungetc( c ); break; } str += c; c = ts_getc(); } return *this; } /*! \overload Reads a "word" from the stream into \a str and returns a reference to the stream. A word consists of characters for which isspace() returns FALSE. */ QTextStream &QTextStream::operator>>( QCString &str ) { CHECK_STREAM_PRECOND QCString *dynbuf = 0; const int buflen = 256; char buffer[buflen]; char *s = buffer; int i = 0; QChar c = eat_ws(); while ( c != QEOF ) { if ( ts_isspace(c) ) { ts_ungetc( c ); break; } if ( i >= buflen-1 ) { if ( !dynbuf ) { // create dynamic buffer dynbuf = new QCString(buflen*2); memcpy( dynbuf->data(), s, i ); // copy old data } else if ( i >= (int)dynbuf->size()-1 ) { dynbuf->resize( dynbuf->size()*2 ); } s = dynbuf->data(); } s[i++] = c; c = ts_getc(); } str.resize( i+1 ); memcpy( str.data(), s, i ); delete dynbuf; return *this; } /*! Reads a line from the stream and returns a string containing the text. The returned string does not contain any trailing newline or carriage return. Note that this is different from QIODevice::readLine(), which does not strip the newline at the end of the line. On EOF you will get a QString that is null. On reading an empty line the returned QString is empty but not null. \sa QIODevice::readLine() */ QString QTextStream::readLine() { #if defined(QT_CHECK_STATE) if ( !dev ) { qWarning( "QTextStream::readLine: No device" ); return QString::null; } #endif bool readCharByChar = TRUE; QString result; #if 0 if ( !doUnicodeHeader && ( (latin1) || (mapper != 0 && mapper->mibEnum() == 106 ) // UTF 8 ) ) { readCharByChar = FALSE; // use optimized read line QChar c[getline_buf_size]; int pos = 0; bool eof = FALSE; for (;;) { pos = ts_getline( c ); if ( pos == 0 ) { // something went wrong; try fallback readCharByChar = TRUE; //dev->resetStatus(); break; } if ( c[pos-1] == QEOF || c[pos-1] == '\n' ) { if ( pos>2 && c[pos-1]==QEOF && c[pos-2]=='\n' ) { result += QString( c, pos-2 ); } else if ( pos > 1 ) { result += QString( c, pos-1 ); } if ( pos == 1 && c[pos-1] == QEOF ) eof = TRUE; break; } else { result += QString( c, pos ); } } if ( eof && result.isEmpty() ) return QString::null; } #endif if ( readCharByChar ) { // read character by character const int buf_size = 256; QChar c[buf_size]; int pos = 0; c[pos] = ts_getc(); if ( c[pos] == QEOF ) { return QString::null; } while ( c[pos] != QEOF && c[pos] != '\n' ) { if ( c[pos] == '\r' ) { // ( handle mac and dos ) QChar nextc = ts_getc(); if ( nextc != '\n' ) ts_ungetc( nextc ); break; } pos++; if ( pos >= buf_size ) { result += QString( c, pos ); pos = 0; } c[pos] = ts_getc(); } result += QString( c, pos ); } return result; } /*! Reads the entire stream and returns a string containing the text. \sa QIODevice::readLine() */ QString QTextStream::read() { #if defined(QT_CHECK_STATE) if ( !dev ) { qWarning( "QTextStream::read: No device" ); return QString::null; } #endif QString result; const uint bufsize = 512; QChar buf[bufsize]; uint i, num, start; bool skipped_cr = FALSE; for (;;) { num = ts_getbuf(buf,bufsize); // convert dos (\r\n) and mac (\r) style eol to unix style (\n) start = 0; for ( i=0; i<num; i++ ) { if ( buf[i] == '\r' ) { // Only skip single cr's preceding lf's if ( skipped_cr ) { result += buf[i]; start++; } else { result += QString( &buf[start], i-start ); start = i+1; skipped_cr = TRUE; } } else { if ( skipped_cr ) { if ( buf[i] != '\n' ) { // Should not have skipped it result += '\n'; } skipped_cr = FALSE; } } } if ( start < num ) result += QString( &buf[start], i-start ); if ( num != bufsize ) // if ( EOF ) break; } return result; } /***************************************************************************** QTextStream write functions *****************************************************************************/ /*! Writes character \c char to the stream and returns a reference to the stream. The character \a c is assumed to be Latin1 encoded independent of the Encoding set for the QTextStream. */ QTextStream &QTextStream::operator<<( QChar c ) { CHECK_STREAM_PRECOND ts_putc( c ); return *this; } /*! \overload Writes character \a c to the stream and returns a reference to the stream. */ QTextStream &QTextStream::operator<<( char c ) { CHECK_STREAM_PRECOND unsigned char uc = (unsigned char) c; ts_putc( uc ); return *this; } QTextStream &QTextStream::output_int( int format, ulong n, bool neg ) { static const char hexdigits_lower[] = "0123456789abcdef"; static const char hexdigits_upper[] = "0123456789ABCDEF"; CHECK_STREAM_PRECOND char buf[76]; register char *p; int len; const char *hexdigits; switch ( flags() & I_BASE_MASK ) { case I_BASE_2: // output binary number switch ( format & I_TYPE_MASK ) { case I_SHORT: len=16; break; case I_INT: len=sizeof(int)*8; break; case I_LONG: len=32; break; default: len = 0; } p = &buf[74]; // go reverse order *p = '\0'; while ( len-- ) { *--p = (char)(n&1) + '0'; n >>= 1; if ( !n ) break; } if ( flags() & showbase ) { // show base *--p = (flags() & uppercase) ? 'B' : 'b'; *--p = '0'; } break; case I_BASE_8: // output octal number p = &buf[74]; *p = '\0'; do { *--p = (char)(n&7) + '0'; n >>= 3; } while ( n ); if ( flags() & showbase ) *--p = '0'; break; case I_BASE_16: // output hexadecimal number p = &buf[74]; *p = '\0'; hexdigits = (flags() & uppercase) ? hexdigits_upper : hexdigits_lower; do { *--p = hexdigits[(int)n&0xf]; n >>= 4; } while ( n ); if ( flags() & showbase ) { *--p = (flags() & uppercase) ? 'X' : 'x'; *--p = '0'; } break; default: // decimal base is default p = &buf[74]; *p = '\0'; if ( neg ) n = (ulong)(-(long)n); do { *--p = ((int)(n%10)) + '0'; n /= 10; } while ( n ); if ( neg ) *--p = '-'; else if ( flags() & showpos ) *--p = '+'; if ( (flags() & internal) && fwidth && !ts_isdigit(*p) ) { ts_putc( *p ); // special case for internal ++p; // padding fwidth--; return *this << (const char*)p; } } if ( fwidth ) { // adjustment required if ( !(flags() & left) ) { // but NOT left adjustment len = qstrlen(p); int padlen = fwidth - len; if ( padlen <= 0 ) { // no padding required writeBlock( p, len ); } else if ( padlen < (int)(p-buf) ) { // speeds up padding memset( p-padlen, (char)fillchar, padlen ); writeBlock( p-padlen, padlen+len ); } else // standard padding *this << (const char*)p; } else *this << (const char*)p; fwidth = 0; // reset field width } else writeBlock( p, qstrlen(p) ); return *this; } /*! \overload Writes a \c short integer \a i to the stream and returns a reference to the stream. */ QTextStream &QTextStream::operator<<( signed short i ) { return output_int( I_SHORT | I_SIGNED, i, i < 0 ); } /*! \overload Writes an \c unsigned \c short integer \a i to the stream and returns a reference to the stream. */ QTextStream &QTextStream::operator<<( unsigned short i ) { return output_int( I_SHORT | I_UNSIGNED, i, FALSE ); } /*! \overload Writes an \c int \a i to the stream and returns a reference to the stream. */ QTextStream &QTextStream::operator<<( signed int i ) { return output_int( I_INT | I_SIGNED, i, i < 0 ); } /*! \overload Writes an \c unsigned \c int \a i to the stream and returns a reference to the stream. */ QTextStream &QTextStream::operator<<( unsigned int i ) { return output_int( I_INT | I_UNSIGNED, i, FALSE ); } /*! \overload Writes a \c long \c int \a i to the stream and returns a reference to the stream. */ QTextStream &QTextStream::operator<<( signed long i ) { return output_int( I_LONG | I_SIGNED, i, i < 0 ); } /*! \overload Writes an \c unsigned \c long \c int \a i to the stream and returns a reference to the stream. */ QTextStream &QTextStream::operator<<( unsigned long i ) { return output_int( I_LONG | I_UNSIGNED, i, FALSE ); } /*! \overload Writes a \c float \a f to the stream and returns a reference to the stream. */ QTextStream &QTextStream::operator<<( float f ) { return *this << (double)f; } /*! \overload Writes a \c double \a f to the stream and returns a reference to the stream. */ QTextStream &QTextStream::operator<<( double f ) { CHECK_STREAM_PRECOND char buf[64]; char f_char; char format[16]; if ( (flags()&floatfield) == fixed ) f_char = 'f'; else if ( (flags()&floatfield) == scientific ) f_char = (flags() & uppercase) ? 'E' : 'e'; else f_char = (flags() & uppercase) ? 'G' : 'g'; register char *fs = format; // generate format string *fs++ = '%'; // "%.<prec>l<f_char>" *fs++ = '.'; int prec = precision(); if ( prec > 99 ) prec = 99; if ( prec >= 10 ) { *fs++ = prec / 10 + '0'; *fs++ = prec % 10 + '0'; } else { *fs++ = prec + '0'; } *fs++ = 'l'; *fs++ = f_char; *fs = '\0'; sprintf( buf, format, f ); // convert to text if ( fwidth ) // padding *this << (const char*)buf; else // just write it writeBlock( buf, qstrlen(buf) ); return *this; } /*! \overload Writes a string to the stream and returns a reference to the stream. The string \a s is assumed to be Latin1 encoded independent of the Encoding set for the QTextStream. */ QTextStream &QTextStream::operator<<( const char* s ) { CHECK_STREAM_PRECOND char padbuf[48]; uint len = qstrlen( s ); // don't write null terminator if ( fwidth ) { // field width set int padlen = fwidth - len; fwidth = 0; // reset width if ( padlen > 0 ) { char *ppad; if ( padlen > 46 ) { // create extra big fill buffer ppad = new char[padlen]; Q_CHECK_PTR( ppad ); } else { ppad = padbuf; } memset( ppad, (char)fillchar, padlen ); // fill with fillchar if ( !(flags() & left) ) { writeBlock( ppad, padlen ); padlen = 0; } writeBlock( s, len ); if ( padlen ) writeBlock( ppad, padlen ); if ( ppad != padbuf ) // delete extra big fill buf delete[] ppad; return *this; } } writeBlock( s, len ); return *this; } /*! \overload Writes \a s to the stream and returns a reference to the stream. The string \a s is assumed to be Latin1 encoded independent of the Encoding set for the QTextStream. */ QTextStream &QTextStream::operator<<( const QCString & s ) { return operator<<(s.data()); } /*! \overload Writes \a s to the stream and returns a reference to the stream. */ QTextStream &QTextStream::operator<<( const QString& s ) { if ( !mapper && latin1 ) return operator<<(s.latin1()); CHECK_STREAM_PRECOND QString s1 = s; if ( fwidth ) { // field width set if ( !(flags() & left) ) { s1 = s.rightJustify(fwidth, (char)fillchar); } else { s1 = s.leftJustify(fwidth, (char)fillchar); } fwidth = 0; // reset width } writeBlock( s1.unicode(), s1.length() ); return *this; } /*! \overload Writes a pointer to the stream and returns a reference to the stream. The \a ptr is output as an unsigned long hexadecimal integer. */ QTextStream &QTextStream::operator<<( void *ptr ) { int f = flags(); setf( hex, basefield ); setf( showbase ); unsetf( uppercase ); output_int( I_LONG | I_UNSIGNED, (ulong)ptr, FALSE ); flags( f ); return *this; } /*! \fn int QTextStream::flags() const Returns the current stream flags. The default value is 0. \table \header \i Flag \i Meaning \row \i \c skipws \i Not currently used; whitespace always skipped \row \i \c left \i Numeric fields are left-aligned \row \i \c right \i Not currently used (by default, numerics are right-aligned) \row \i \c internal \i Puts any padding spaces between +/- and value \row \i \c bin \i Output \e and input only in binary \row \i \c oct \i Output \e and input only in octal \row \i \c dec \i Output \e and input only in decimal \row \i \c hex \i Output \e and input only in hexadecimal \row \i \c showbase \i Annotates numeric outputs with 0b, 0, or 0x if in \c bin, \c oct, or \c hex format \row \i \c showpoint \i Not currently used \row \i \c uppercase \i Uses 0B and 0X rather than 0b and 0x \row \i \c showpos \i Shows + for positive numeric values \row \i \c scientific \i Uses scientific notation for floating point values \row \i \c fixed \i Uses fixed-point notation for floating point values \endtable Note that unless \c bin, \c oct, \c dec, or \c hex is set, the input base is octal if the value starts with 0, hexadecimal if it starts with 0x, binary if it starts with 0b, and decimal otherwise. \sa setf(), unsetf() */ /*! \fn int QTextStream::flags( int f ) \overload Sets the stream flags to \a f. Returns the previous stream flags. \sa setf(), unsetf(), flags() */ /*! \fn int QTextStream::setf( int bits ) Sets the stream flag bits \a bits. Returns the previous stream flags. Equivalent to \c{flags( flags() | bits )}. \sa setf(), unsetf() */ /*! \fn int QTextStream::setf( int bits, int mask ) \overload Sets the stream flag bits \a bits with a bit mask \a mask. Returns the previous stream flags. Equivalent to \c{flags( (flags() & ~mask) | (bits & mask) )}. \sa setf(), unsetf() */ /*! \fn int QTextStream::unsetf( int bits ) Clears the stream flag bits \a bits. Returns the previous stream flags. Equivalent to \c{flags( flags() & ~mask )}. \sa setf() */ /*! \fn int QTextStream::width() const Returns the field width. The default value is 0. */ /*! \fn int QTextStream::width( int w ) \overload Sets the field width to \a w. Returns the previous field width. */ /*! \fn int QTextStream::fill() const Returns the fill character. The default value is ' ' (space). */ /*! \overload int QTextStream::fill( int f ) Sets the fill character to \a f. Returns the previous fill character. */ /*! \fn int QTextStream::precision() const Returns the precision. The default value is 6. */ /*! \fn int QTextStream::precision( int p ) \overload Sets the precision to \a p. Returns the previous precision setting. */ /***************************************************************************** QTextStream manipulators *****************************************************************************/ QTextStream &bin( QTextStream &s ) { s.setf(QTS::bin,QTS::basefield); return s; } QTextStream &oct( QTextStream &s ) { s.setf(QTS::oct,QTS::basefield); return s; } QTextStream &dec( QTextStream &s ) { s.setf(QTS::dec,QTS::basefield); return s; } QTextStream &hex( QTextStream &s ) { s.setf(QTS::hex,QTS::basefield); return s; } QTextStream &endl( QTextStream &s ) { return s << '\n'; } QTextStream &flush( QTextStream &s ) { if ( s.device() ) s.device()->flush(); return s; } QTextStream &ws( QTextStream &s ) { s.skipWhiteSpace(); return s; } QTextStream &reset( QTextStream &s ) { s.reset(); return s; } /*! \class QTextIStream qtextstream.h \reentrant \brief The QTextIStream class is a convenience class for input streams. \ingroup io \ingroup text This class provides a shorthand for creating simple input \l{QTextStream}s without having to pass a \e mode argument to the constructor. This class makes it easy, for example, to write things like this: \code QString data = "123 456"; int a, b; QTextIStream(&data) >> a >> b; \endcode \sa QTextOStream */ /*! \fn QTextIStream::QTextIStream( const QString *s ) Constructs a stream to read from the string \a s. */ /*! \fn QTextIStream::QTextIStream( QByteArray ba ) Constructs a stream to read from the array \a ba. */ /*! \fn QTextIStream::QTextIStream( FILE *f ) Constructs a stream to read from the file \a f. */ /*! \class QTextOStream \reentrant \brief The QTextOStream class is a convenience class for output streams. \ingroup io \ingroup text This class provides a shorthand for creating simple output \l{QTextStream}s without having to pass a \e mode argument to the constructor. This makes it easy for example, to write things like this: \code QString result; QTextOStream(&result) << "pi = " << 3.14; \endcode */ /*! \fn QTextOStream::QTextOStream( QString *s ) Constructs a stream to write to string \a s. */ /*! \fn QTextOStream::QTextOStream( QByteArray ba ) Constructs a stream to write to the array \a ba. */ /*! \fn QTextOStream::QTextOStream( FILE *f ) Constructs a stream to write to the file \a f. */ /*! Sets the encoding of this stream to \a e, where \a e is one of the following values: \table \header \i Encoding \i Meaning \row \i Locale \i Uses local file format (Latin1 if locale is not set), but autodetecting Unicode(utf16) on input. \row \i Unicode \i Uses Unicode(utf16) for input and output. Output will be written in the order most efficient for the current platform (i.e. the order used internally in QString). \row \i UnicodeUTF8 \i Using Unicode(utf8) for input and output. If you use it for input it will autodetect utf16 and use it instead of utf8. \row \i Latin1 \i ISO-8859-1. Will not autodetect utf16. \row \i UnicodeNetworkOrder \i Uses network order Unicode(utf16) for input and output. Useful when reading Unicode data that does not start with the byte order marker. \row \i UnicodeReverse \i Uses reverse network order Unicode(utf16) for input and output. Useful when reading Unicode data that does not start with the byte order marker or when writing data that should be read by buggy Windows applications. \row \i RawUnicode \i Like Unicode, but does not write the byte order marker nor does it auto-detect the byte order. Useful only when writing to non-persistent storage used by a single process. \endtable \c Locale and all Unicode encodings, except \c RawUnicode, will look at the first two bytes in an input stream to determine the byte order. The initial byte order marker will be stripped off before data is read. Note that this function should be called before any data is read to or written from the stream. \sa setCodec() */ void QTextStream::setEncoding( Encoding e ) { if ( d->sourceType == QTextStreamPrivate::String ) return; switch ( e ) { case Unicode: mapper = 0; latin1 = FALSE; doUnicodeHeader = TRUE; internalOrder = TRUE; networkOrder = QChar::networkOrdered(); break; case UnicodeUTF8: #ifndef QT_NO_TEXTCODEC mapper = QTextCodec::codecForMib( 106 ); latin1 = FALSE; doUnicodeHeader = TRUE; internalOrder = TRUE; networkOrder = QChar::networkOrdered(); #else mapper = 0; latin1 = TRUE; doUnicodeHeader = TRUE; #endif break; case UnicodeNetworkOrder: mapper = 0; latin1 = FALSE; doUnicodeHeader = TRUE; internalOrder = QChar::networkOrdered(); networkOrder = TRUE; break; case UnicodeReverse: mapper = 0; latin1 = FALSE; doUnicodeHeader = TRUE; internalOrder = !QChar::networkOrdered(); networkOrder = FALSE; break; case RawUnicode: mapper = 0; latin1 = FALSE; doUnicodeHeader = FALSE; internalOrder = TRUE; networkOrder = QChar::networkOrdered(); break; case Locale: latin1 = TRUE; // fallback to Latin-1 #ifndef QT_NO_TEXTCODEC mapper = QTextCodec::codecForLocale(); // optimized Latin-1 processing #if defined(Q_OS_WIN32) if ( GetACP() == 1252 ) mapper = 0; #endif if ( mapper && mapper->mibEnum() == 4 ) #endif mapper = 0; doUnicodeHeader = TRUE; // If it reads as Unicode, accept it break; case Latin1: mapper = 0; doUnicodeHeader = FALSE; latin1 = TRUE; break; } } #ifndef QT_NO_TEXTCODEC /*! Sets the codec for this stream to \a codec. Will not try to autodetect Unicode. Note that this function should be called before any data is read to/written from the stream. \sa setEncoding(), codec() */ void QTextStream::setCodec( QTextCodec *codec ) { if ( d->sourceType == QTextStreamPrivate::String ) return; // QString does not need any codec mapper = codec; latin1 = ( codec->mibEnum() == 4 ); if ( latin1 ) mapper = 0; doUnicodeHeader = FALSE; } /*! Returns the codec actually used for this stream. If Unicode is automatically detected in input, a codec with \link QTextCodec::name() name() \endlink "ISO-10646-UCS-2" is returned. \sa setCodec() */ QTextCodec *QTextStream::codec() { if ( mapper ) { return mapper; } else { // 4 is "ISO 8859-1", 1000 is "ISO-10646-UCS-2" return QTextCodec::codecForMib( latin1 ? 4 : 1000 ); } } #endif #endif // QT_NO_TEXTSTREAM |