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tqt3/src/tools/qtextstream.cpp

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/****************************************************************************
**
** Implementation of TQTextStream class
**
** Created : 940922
**
** Copyright (C) 1992-2008 Trolltech ASA. All rights reserved.
**
** This file is part of the tools module of the TQt GUI Toolkit.
**
** This file may be used under the terms of the GNU General
** Public License versions 2.0 or 3.0 as published by the Free
** Software Foundation and appearing in the files LICENSE.GPL2
** and LICENSE.GPL3 included in the packaging of this file.
** Alternatively you may (at your option) use any later version
** of the GNU General Public License if such license has been
** publicly approved by Trolltech ASA (or its successors, if any)
** and the KDE Free TQt Foundation.
**
** Please review the following information to ensure GNU General
** Public Licensing requirements will be met:
** http://trolltech.com/products/qt/licenses/licensing/opensource/.
** If you are unsure which license is appropriate for your use, please
** review the following information:
** http://trolltech.com/products/qt/licenses/licensing/licensingoverview
** or contact the sales department at sales@trolltech.com.
**
** This file may be used under the terms of the Q Public License as
** defined by Trolltech ASA and appearing in the file LICENSE.TQPL
** included in the packaging of this file. Licensees holding valid TQt
** Commercial licenses may use this file in accordance with the TQt
** Commercial License Agreement provided with the Software.
**
** This file is provided "AS IS" with NO WARRANTY OF ANY KIND,
** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE. Trolltech reserves all rights not granted
** herein.
**
**********************************************************************/
#include "ntqtextstream.h"
#ifndef TQT_NO_TEXTSTREAM
#include "ntqtextcodec.h"
#include "ntqregexp.h"
#include "ntqbuffer.h"
#include "ntqfile.h"
#include <stdio.h>
#include <ctype.h>
#include <stdlib.h>
#ifndef Q_OS_TEMP
#include <locale.h>
#endif
#if defined(Q_OS_WIN32)
#include "qt_windows.h"
#endif
/*!
\class TQTextStream ntqtextstream.h
\reentrant
\brief The TQTextStream class provides basic functions for reading
and writing text using a TQIODevice.
\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.
TQt provides several global functions similar to the ones in iostream:
\table
\header \i Function \i Meaning
\row \i bin \i sets the TQTextStream to read/write binary numbers
\row \i oct \i sets the TQTextStream to read/write octal numbers
\row \i dec \i sets the TQTextStream to read/write decimal numbers
\row \i hex \i sets the TQTextStream to read/write hexadecimal numbers
\row \i endl \i forces a line break
\row \i flush \i forces the TQIODevice to flush any buffered data
\row \i ws \i eats any available whitespace (on input)
\row \i reset \i resets the TQTextStream 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 TQTextStream 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 TQTextStream class reads and writes text; it is not appropriate
for dealing with binary data (but TQDataStream is).
By default, output of Unicode text (i.e. TQString) is done using
the local 8-bit encoding. This can be changed using the
setEncoding() method. For input, the TQTextStream will auto-detect
standard Unicode "byte order marked" text files; otherwise the
local 8-bit encoding is used.
The TQIODevice 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 TQDataStream
*/
/*!
\enum TQTextStream::Encoding
\value Locale
\value Latin1
\value Unicode
\value UnicodeNetworkOrder
\value UnicodeReverse
\value RawUnicode
\value UnicodeUTF8
See setEncoding() for an explanation of the encodings.
*/
/*
\class TQTSManip
\brief The TQTSManip class is an internal helper class for the
TQTextStream.
It is generally a very bad idea to use this class directly in
application programs.
\internal
This class makes it possible to give the TQTextStream function objects
with arguments, like this:
\code
TQTextStream cout( stdout, IO_WriteOnly );
cout << setprecision( 8 ); // TQTSManip used here!
cout << 3.14159265358979323846;
\endcode
The setprecision() function returns a TQTSManip object.
The TQTSManip object contains a pointer to a member function in
TQTextStream and an integer argument.
When serializing a TQTSManip into a TQTextStream, the function
is executed with the argument.
*/
/*! \fn TQTSManip::TQTSManip( TQTSMFI m, int a )
Constructs a TQTSManip object which will call \a m (a member function
in TQTextStream which accepts a single int) with argument \a a when
TQTSManip::exec() is called. Used internally in e.g. endl:
\code
s << "some text" << endl << "more text";
\endcode
*/
/*! \fn void TQTSManip::exec( TQTextStream& 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
*/
/*****************************************************************************
TQTextStream member functions
*****************************************************************************/
#if defined(QT_CHECK_STATE)
#undef CHECK_STREAM_PRECOND
#define CHECK_STREAM_PRECOND if ( !dev ) { \
tqWarning( "TQTextStream: No device" ); \
return *this; }
#else
#define CHECK_STREAM_PRECOND
#endif
#define I_SHORT 0x0010
#define I_INT 0x0020
#define I_LONG 0x0030
#define I_LONGLONG 0x0040
#define I_TYPE_MASK 0x00f0
#define I_BASE_2 TQTS::bin
#define I_BASE_8 TQTS::oct
#define I_BASE_10 TQTS::dec
#define I_BASE_16 TQTS::hex
#define I_BASE_MASK (TQTS::bin | TQTS::oct | TQTS::dec | TQTS::hex)
#define I_SIGNED 0x0100
#define I_UNSIGNED 0x0200
#define I_SIGN_MASK 0x0f00
static const TQChar TQEOF = TQChar((ushort)0xffff); //guaranteed not to be a character.
static const uint getline_buf_size = 256; // bufsize used by ts_getline()
const int TQTextStream::basefield = I_BASE_MASK;
const int TQTextStream::adjustfield = ( TQTextStream::left |
TQTextStream::right |
TQTextStream::internal );
const int TQTextStream::floatfield = ( TQTextStream::scientific |
TQTextStream::fixed );
class TQTextStreamPrivate {
public:
#ifndef TQT_NO_TEXTCODEC
TQTextStreamPrivate()
: decoder( 0 ), encoder( 0 ), sourceType( NotSet ) { }
~TQTextStreamPrivate() {
delete decoder;
delete encoder;
}
TQTextDecoder *decoder;
TQTextEncoder *encoder;
#else
TQTextStreamPrivate() : sourceType( NotSet ) { }
~TQTextStreamPrivate() { }
#endif
TQString ungetcBuf;
enum SourceType { NotSet, IODevice, String, ByteArray, File };
SourceType sourceType;
};
// skips whitespace and returns the first non-whitespace character
TQChar TQTextStream::eat_ws()
{
TQChar c;
do { c = ts_getc(); } while ( c != TQEOF && ts_isspace(c) );
return c;
}
void TQTextStream::init()
{
// ### ungetcBuf = TQEOF;
dev = 0;
owndev = FALSE;
mapper = 0;
d = new TQTextStreamPrivate;
doUnicodeHeader = TRUE; // autodetect
latin1 = TRUE; // should use locale?
internalOrder = TQChar::networkOrdered();
networkOrder = TRUE;
}
/*!
Constructs a data stream that has no IO device.
*/
TQTextStream::TQTextStream()
{
init();
setEncoding( Locale );
reset();
d->sourceType = TQTextStreamPrivate::NotSet;
}
/*!
Constructs a text stream that uses the IO device \a iod.
*/
TQTextStream::TQTextStream( TQIODevice *iod )
{
init();
setEncoding( Locale );
dev = iod;
reset();
d->sourceType = TQTextStreamPrivate::IODevice;
}
// TODO: use special-case handling of this case in TQTextStream, and
// simplify this class to only deal with TQChar or TQString data.
class TQStringBuffer : public TQIODevice {
public:
TQStringBuffer( TQString* str );
~TQStringBuffer();
bool open( int m );
void close();
void flush();
Offset size() const;
Offset at() const;
bool at( Offset pos );
TQ_LONG readBlock( char *p, TQ_ULONG len );
TQ_LONG writeBlock( const char *p, TQ_ULONG len );
int getch();
int putch( int ch );
int ungetch( int ch );
protected:
TQString* s;
private:
TQStringBuffer( const TQStringBuffer & );
TQStringBuffer &operator=( const TQStringBuffer & );
};
TQStringBuffer::TQStringBuffer( TQString* str )
{
s = str;
}
TQStringBuffer::~TQStringBuffer()
{
}
bool TQStringBuffer::open( int m )
{
if ( !s ) {
#if defined(QT_CHECK_STATE)
tqWarning( "TQStringBuffer::open: No string" );
#endif
return FALSE;
}
if ( isOpen() ) {
#if defined(QT_CHECK_STATE)
tqWarning( "TQStringBuffer::open: Buffer already open" );
#endif
return FALSE;
}
setMode( m );
if ( m & IO_Truncate )
s->truncate( 0 );
if ( m & IO_Append ) {
ioIndex = s->length()*sizeof(TQChar);
} else {
ioIndex = 0;
}
setState( IO_Open );
resetStatus();
return TRUE;
}
void TQStringBuffer::close()
{
if ( isOpen() ) {
setFlags( IO_Direct );
ioIndex = 0;
}
}
void TQStringBuffer::flush()
{
}
TQIODevice::Offset TQStringBuffer::size() const
{
return s ? s->length()*sizeof(TQChar) : 0;
}
TQIODevice::Offset TQStringBuffer::at() const
{
return ioIndex;
}
bool TQStringBuffer::at( Offset pos )
{
#if defined(QT_CHECK_STATE)
if ( !isOpen() ) {
tqWarning( "TQStringBuffer::at: Buffer is not open" );
return FALSE;
}
#endif
if ( pos >= s->length()*2 ) {
#if defined(QT_CHECK_RANGE)
#if defined(QT_ABI_QT4)
tqWarning( "TQStringBuffer::at: Index %lld out of range", pos );
#else
tqWarning( "TQStringBuffer::at: Index %lu out of range", pos );
#endif
#endif
return FALSE;
}
ioIndex = pos;
return TRUE;
}
TQ_LONG TQStringBuffer::readBlock( char *p, TQ_ULONG len )
{
#if defined(QT_CHECK_STATE)
TQ_CHECK_PTR( p );
if ( !isOpen() ) {
tqWarning( "TQStringBuffer::readBlock: Buffer not open" );
return -1;
}
if ( !isReadable() ) {
tqWarning( "TQStringBuffer::readBlock: Read operation not permitted" );
return -1;
}
#endif
if ( ioIndex + len > s->length()*sizeof(TQChar) ) {
// overflow
if ( (uint)ioIndex >= s->length()*sizeof(TQChar) ) {
setStatus( IO_ReadError );
return -1;
} else {
len = s->length()*2 - (uint)ioIndex;
}
}
memcpy( p, ((const char*)(s->unicode()))+ioIndex, len );
ioIndex += len;
return len;
}
TQ_LONG TQStringBuffer::writeBlock( const char *p, TQ_ULONG len )
{
#if defined(QT_CHECK_NULL)
if ( p == 0 && len != 0 )
tqWarning( "TQStringBuffer::writeBlock: Null pointer error" );
#endif
#if defined(QT_CHECK_STATE)
if ( !isOpen() ) {
tqWarning( "TQStringBuffer::writeBlock: Buffer not open" );
return -1;
}
if ( !isWritable() ) {
tqWarning( "TQStringBuffer::writeBlock: Write operation not permitted" );
return -1;
}
if ( ioIndex&1 ) {
tqWarning( "TQStringBuffer::writeBlock: non-even index - non Unicode" );
return -1;
}
if ( len&1 ) {
tqWarning( "TQStringBuffer::writeBlock: non-even length - non Unicode" );
return -1;
}
#endif
s->replace(ioIndex/2, len/2, (TQChar*)p, len/2);
ioIndex += len;
return len;
}
int TQStringBuffer::getch()
{
#if defined(QT_CHECK_STATE)
if ( !isOpen() ) {
tqWarning( "TQStringBuffer::getch: Buffer not open" );
return -1;
}
if ( !isReadable() ) {
tqWarning( "TQStringBuffer::getch: Read operation not permitted" );
return -1;
}
#endif
if ( (uint)ioIndex >= s->length()*2 ) { // overflow
setStatus( IO_ReadError );
return -1;
}
return (int)((const uchar *)s->unicode())[ioIndex++];
}
int TQStringBuffer::putch( int ch )
{
char c = ch;
if ( writeBlock(&c,1) < 0 )
return -1;
else
return ch;
}
int TQStringBuffer::ungetch( int ch )
{
#if defined(QT_CHECK_STATE)
if ( !isOpen() ) {
tqWarning( "TQStringBuffer::ungetch: Buffer not open" );
return -1;
}
if ( !isReadable() ) {
tqWarning( "TQStringBuffer::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 TQString, \a
str, through an internal device. The \a filemode argument is
passed to the device's open() function; see \l{TQIODevice::mode()}.
If you set an encoding or codec with setEncoding() or setCodec(),
this setting is ignored for text streams that operate on TQString.
Example:
\code
TQString str;
TQTextStream 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
TQString str = "pi = 3.14";
TQTextStream ts( &str, IO_WriteOnly );
ts << "2+2 = " << 2+2; // str == "2+2 = 414"
\endcode
Note that because TQString is Unicode, you should not use
readRawBytes() or writeRawBytes() on such a stream.
*/
TQTextStream::TQTextStream( TQString* str, int filemode )
{
// TODO: optimize for this case as it becomes more common
// (see TQStringBuffer above)
init();
dev = new TQStringBuffer( str );
((TQStringBuffer *)dev)->open( filemode );
owndev = TRUE;
setEncoding(RawUnicode);
reset();
d->sourceType = TQTextStreamPrivate::String;
}
/*! \obsolete
This constructor is equivalent to the constructor taking a TQString*
parameter.
*/
TQTextStream::TQTextStream( TQString& str, int filemode )
{
init();
dev = new TQStringBuffer( &str );
((TQStringBuffer *)dev)->open( filemode );
owndev = TRUE;
setEncoding(RawUnicode);
reset();
d->sourceType = TQTextStreamPrivate::String;
}
/*!
Constructs a text stream that operates on the byte array, \a a,
through an internal TQBuffer device. The \a mode argument is passed
to the device's open() function; see \l{TQIODevice::mode()}.
Example:
\code
TQByteArray array;
TQTextStream 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 TQBuffer:
\code
TQByteArray array;
TQBuffer buf( array );
buf.open( IO_WriteOnly );
TQTextStream ts( &buf );
ts << "pi = " << 3.14 << '\0'; // array == "pi = 3.14"
buf.close();
\endcode
*/
TQTextStream::TQTextStream( TQByteArray a, int mode )
{
init();
dev = new TQBuffer( a );
((TQBuffer *)dev)->open( mode );
owndev = TRUE;
setEncoding( Latin1 ); //### Locale???
reset();
d->sourceType = TQTextStreamPrivate::ByteArray;
}
/*!
Constructs a text stream that operates on an existing file handle
\a fh through an internal TQFile device. The \a mode argument is
passed to the device's open() function; see \l{TQIODevice::mode()}.
Note that if you create a TQTextStream \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.
*/
TQTextStream::TQTextStream( FILE *fh, int mode )
{
init();
setEncoding( Locale ); //###
dev = new TQFile;
((TQFile *)dev)->open( mode, fh );
owndev = TRUE;
reset();
d->sourceType = TQTextStreamPrivate::File;
}
/*!
Destroys the text stream.
The destructor does not affect the current IO device.
*/
TQTextStream::~TQTextStream()
{
if ( owndev )
delete dev;
delete d;
}
/*!
Positions the read pointer at the first non-whitespace character.
*/
void TQTextStream::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 TQEOF appended if the read reaches the end
of the file. EOF is reached when the return value does not equal
\a len.
*/
uint TQTextStream::ts_getbuf( TQChar* buf, uint len )
{
if ( len < 1 )
return 0;
uint rnum = 0; // the number of TQChars 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 = TQChar::networkOrdered();
networkOrder = TRUE;
} else if ( c1 == 0xff && c2 == 0xfe ) {
mapper = 0;
latin1 = FALSE;
internalOrder = !TQChar::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 TQT_NO_TEXTCODEC
if ( mapper ) {
bool shortRead = FALSE;
if ( !d->decoder )
d->decoder = mapper->makeDecoder();
while( rnum < len ) {
TQString 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 = TQMIN( 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 = TQChar( c2, c1 );
} else {
*buf = TQChar( 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 = TQChar( cbuf[i+1], cbuf[i] );
buf++;
i+=2;
}
} else {
while( i < rlen ) {
*buf = TQChar( 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 TQEOF 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 TQIODevice::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 TQTextStream::ts_getline( TQChar* buf )
{
uint rnum=0; // the number of TQChars 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 TQT_NO_TEXTCODEC
if ( mapper ) {
if ( !d->decoder )
d->decoder = mapper->makeDecoder();
TQString 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++] = TQEOF;
} 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] = TQEOF;
}
return rnum;
}
/*!
Puts one character into the stream.
*/
void TQTextStream::ts_putc( TQChar c )
{
#ifndef TQT_NO_TEXTCODEC
if ( mapper ) {
if ( !d->encoder )
d->encoder = mapper->makeEncoder();
int len = 1;
TQString s = c;
TQCString 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( TQChar::byteOrderMark );
}
if ( internalOrder ) {
// this case is needed by TQStringBuffer
dev->writeBlock( (char*)&c, sizeof(TQChar) );
} 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 TQTextStream::ts_putc( int ch )
{
ts_putc( TQChar((ushort)ch) );
}
bool TQTextStream::ts_isdigit( TQChar c )
{
return c.isDigit();
}
bool TQTextStream::ts_isspace( TQChar c )
{
return c.isSpace();
}
void TQTextStream::ts_ungetc( TQChar 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 TQIODevice::readBlock()
*/
TQTextStream &TQTextStream::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 TQIODevice::writeBlock()
*/
TQTextStream &TQTextStream::writeRawBytes( const char* s, uint len )
{
dev->writeBlock( s, len );
return *this;
}
TQTextStream &TQTextStream::writeBlock( const char* p, uint len )
{
if ( doUnicodeHeader ) {
doUnicodeHeader = FALSE;
if ( !mapper && !latin1 )
ts_putc( TQChar::byteOrderMark );
}
// TQCString and const char * are treated as Latin-1
if ( !mapper && latin1 ) {
dev->writeBlock( p, len );
} else if ( !mapper && internalOrder ) {
TQChar *u = new TQChar[len];
for ( uint i = 0; i < len; i++ )
u[i] = p[i];
dev->writeBlock( (char*)u, len * sizeof(TQChar) );
delete [] u;
}
#ifndef TQT_NO_TEXTCODEC
else if (mapper) {
if (!d->encoder)
d->encoder = mapper->makeEncoder();
TQString s = TQString::fromLatin1(p, len);
int l = len;
TQCString block = d->encoder->fromUnicode(s, l);
dev->writeBlock(block, l);
}
#endif
else {
for ( uint i = 0; i < len; i++ )
ts_putc( (uchar)p[i] );
}
return *this;
}
TQTextStream &TQTextStream::writeBlock( const TQChar* p, uint len )
{
#ifndef TQT_NO_TEXTCODEC
if ( mapper ) {
if ( !d->encoder )
d->encoder = mapper->makeEncoder();
TQConstString s( p, len );
int l = len;
TQCString block = d->encoder->fromUnicode( s.string(), l );
dev->writeBlock( block, l );
} else
#endif
if ( latin1 ) {
char *str = TQString::unicodeToLatin1( p, len );
dev->writeBlock( str, len );
delete [] str;
} else if ( internalOrder ) {
if ( doUnicodeHeader ) {
doUnicodeHeader = FALSE;
ts_putc( TQChar::byteOrderMark );
}
dev->writeBlock( (char*)p, sizeof(TQChar)*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 TQTextStream::reset()
{
fflags = 0;
fwidth = 0;
fillchar = ' ';
fprec = 6;
}
/*!
\fn TQIODevice *TQTextStream::device() const
Returns the IO device currently set.
\sa setDevice(), unsetDevice()
*/
/*!
Sets the IO device to \a iod.
\sa device(), unsetDevice()
*/
void TQTextStream::setDevice( TQIODevice *iod )
{
if ( owndev ) {
delete dev;
owndev = FALSE;
}
dev = iod;
d->sourceType = TQTextStreamPrivate::IODevice;
}
/*!
Unsets the IO device. Equivalent to setDevice( 0 ).
\sa device(), setDevice()
*/
void TQTextStream::unsetDevice()
{
setDevice( 0 );
d->sourceType = TQTextStreamPrivate::NotSet;
}
/*!
\fn bool TQTextStream::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 TQIODevice::atEnd()
*/
/*!\fn bool TQTextStream::eof() const
\obsolete
This function has been renamed to atEnd().
\sa TQIODevice::atEnd()
*/
/*****************************************************************************
TQTextStream read functions
*****************************************************************************/
/*!
\overload
Reads a char \a c from the stream and returns a reference to the
stream. Note that whitespace is skipped.
*/
TQTextStream &TQTextStream::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.
*/
TQTextStream &TQTextStream::operator>>( TQChar &c )
{
CHECK_STREAM_PRECOND
c = ts_getc();
return *this;
}
ulong TQTextStream::input_bin()
{
ulong val = 0;
TQChar ch = eat_ws();
int dv = ch.digitValue();
while ( dv == 0 || dv == 1 ) {
val = ( val << 1 ) + dv;
ch = ts_getc();
dv = ch.digitValue();
}
if ( ch != TQEOF )
ts_ungetc( ch );
return val;
}
ulong TQTextStream::input_oct()
{
ulong val = 0;
TQChar 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 != TQEOF )
ts_ungetc( ch );
return val;
}
ulong TQTextStream::input_dec()
{
ulong val = 0;
TQChar ch = eat_ws();
int dv = ch.digitValue();
while ( ts_isdigit(ch) ) {
val = val * 10 + dv;
ch = ts_getc();
dv = ch.digitValue();
}
if ( ch != TQEOF )
ts_ungetc( ch );
return val;
}
ulong TQTextStream::input_hex()
{
ulong val = 0;
TQChar 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 != TQEOF )
ts_ungetc( ch );
return val;
}
long TQTextStream::input_int()
{
long val;
TQChar 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 == TQEOF ) {
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 TQIODevice
//
double TQTextStream::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;
TQChar 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 != TQEOF && ts_isdigit(c) );
}
if ( c != TQEOF )
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.
*/
TQTextStream &TQTextStream::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.
*/
TQTextStream &TQTextStream::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.
*/
TQTextStream &TQTextStream::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.
*/
TQTextStream &TQTextStream::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.
*/
TQTextStream &TQTextStream::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.
*/
TQTextStream &TQTextStream::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.
*/
TQTextStream &TQTextStream::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.
*/
TQTextStream &TQTextStream::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.
*/
TQTextStream &TQTextStream::operator>>( char *s )
{
CHECK_STREAM_PRECOND
int maxlen = width( 0 );
TQChar c = eat_ws();
if ( !maxlen )
maxlen = -1;
while ( c != TQEOF ) {
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.
*/
TQTextStream &TQTextStream::operator>>( TQString &str )
{
CHECK_STREAM_PRECOND
str=TQString::fromLatin1("");
TQChar c = eat_ws();
while ( c != TQEOF ) {
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.
*/
TQTextStream &TQTextStream::operator>>( TQCString &str )
{
CHECK_STREAM_PRECOND
TQCString *dynbuf = 0;
const int buflen = 256;
char buffer[buflen];
char *s = buffer;
int i = 0;
TQChar c = eat_ws();
while ( c != TQEOF ) {
if ( ts_isspace(c) ) {
ts_ungetc( c );
break;
}
if ( i >= buflen-1 ) {
if ( !dynbuf ) { // create dynamic buffer
dynbuf = new TQCString(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
TQIODevice::readLine(), which does not strip the newline at the end
of the line.
On EOF you will get a TQString that is null. On reading an empty
line the returned TQString is empty but not null.
\sa TQIODevice::readLine()
*/
TQString TQTextStream::readLine()
{
#if defined(QT_CHECK_STATE)
if ( !dev ) {
tqWarning( "TQTextStream::readLine: No device" );
return TQString::null;
}
#endif
bool readCharByChar = TRUE;
TQString result;
#if 0
if ( !doUnicodeHeader && (
(latin1) ||
(mapper != 0 && mapper->mibEnum() == 106 ) // UTF 8
) ) {
readCharByChar = FALSE;
// use optimized read line
TQChar 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] == TQEOF || c[pos-1] == '\n' ) {
if ( pos>2 && c[pos-1]==TQEOF && c[pos-2]=='\n' ) {
result += TQString( c, pos-2 );
} else if ( pos > 1 ) {
result += TQString( c, pos-1 );
}
if ( pos == 1 && c[pos-1] == TQEOF )
eof = TRUE;
break;
} else {
result += TQString( c, pos );
}
}
if ( eof && result.isEmpty() )
return TQString::null;
}
#endif
if ( readCharByChar ) {
const int buf_size = 256;
TQChar c[buf_size];
int pos = 0;
c[pos] = ts_getc();
if ( c[pos] == TQEOF )
return TQString::null;
while ( c[pos] != TQEOF && c[pos] != '\n' ) {
if ( c[pos] == '\r' ) { // ( handle mac and dos )
TQChar nextc = ts_getc();
if ( nextc != '\n' )
ts_ungetc( nextc );
break;
}
pos++;
if ( pos >= buf_size ) {
result += TQString( c, pos );
pos = 0;
}
c[pos] = ts_getc();
}
result += TQString( c, pos );
}
return result;
}
/*!
Reads the entire stream from the current position, and returns a string
containing the text.
\sa TQIODevice::readLine()
*/
TQString TQTextStream::read()
{
#if defined(QT_CHECK_STATE)
if ( !dev ) {
tqWarning( "TQTextStream::read: No device" );
return TQString::null;
}
#endif
TQString result;
const uint bufsize = 512;
TQChar 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 += TQString( &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 += TQString( &buf[start], i-start );
if ( num != bufsize ) // if ( EOF )
break;
}
return result;
}
/*****************************************************************************
TQTextStream 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 TQTextStream.
*/
TQTextStream &TQTextStream::operator<<( TQChar c )
{
CHECK_STREAM_PRECOND
ts_putc( c );
return *this;
}
/*!
\overload
Writes character \a c to the stream and returns a reference to the
stream.
*/
TQTextStream &TQTextStream::operator<<( char c )
{
CHECK_STREAM_PRECOND
unsigned char uc = (unsigned char) c;
ts_putc( uc );
return *this;
}
TQTextStream &TQTextStream::output_int( int format, unsigned long long n, bool neg )
{
static const char hexdigits_lower[] = "0123456789abcdef";
static const char hexdigits_upper[] = "0123456789ABCDEF";
CHECK_STREAM_PRECOND
char buf[76];
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;
case I_LONGLONG: len=64; 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 = (unsigned long long)(-(long 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 = tqstrlen(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, tqstrlen(p) );
return *this;
}
/*!
\overload
Writes a \c short integer \a i to the stream and returns a
reference to the stream.
*/
TQTextStream &TQTextStream::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.
*/
TQTextStream &TQTextStream::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.
*/
TQTextStream &TQTextStream::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.
*/
TQTextStream &TQTextStream::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.
*/
TQTextStream &TQTextStream::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.
*/
TQTextStream &TQTextStream::operator<<( unsigned long i )
{
return output_int( I_LONG | I_UNSIGNED, i, FALSE );
}
/*!
\overload
Writes a \c long long \c int \a i to the stream and returns a reference
to the stream.
*/
TQTextStream &TQTextStream::operator<<( signed long long i )
{
return output_int( I_LONGLONG | 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.
*/
TQTextStream &TQTextStream::operator<<( unsigned long long i )
{
return output_int( I_LONGLONG | I_UNSIGNED, i, FALSE );
}
/*!
\overload
Writes a \c float \a f to the stream and returns a reference to
the stream.
*/
TQTextStream &TQTextStream::operator<<( float f )
{
return *this << (double)f;
}
/*!
\overload
Writes a \c double \a f to the stream and returns a reference to
the stream.
*/
TQTextStream &TQTextStream::operator<<( double f )
{
CHECK_STREAM_PRECOND
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';
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';
TQString num;
num.sprintf(format, f); // convert to text
if ( fwidth ) // padding
*this << num.latin1();
else // just write it
writeBlock(num.latin1(), num.length());
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 TQTextStream.
*/
TQTextStream &TQTextStream::operator<<( const char* s )
{
CHECK_STREAM_PRECOND
char padbuf[48];
uint len = tqstrlen( 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];
TQ_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 TQTextStream.
*/
TQTextStream &TQTextStream::operator<<( const TQCString & s )
{
return operator<<(s.data());
}
/*!
\overload
Writes \a s to the stream and returns a reference to the stream.
*/
TQTextStream &TQTextStream::operator<<( const TQString& s )
{
if ( !mapper && latin1 )
return operator<<(s.latin1());
CHECK_STREAM_PRECOND
TQString 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.
*/
TQTextStream &TQTextStream::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 TQTextStream::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 TQTextStream::flags( int f )
\overload
Sets the stream flags to \a f. Returns the previous stream flags.
\sa setf(), unsetf(), flags()
*/
/*!
\fn int TQTextStream::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 TQTextStream::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 TQTextStream::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 TQTextStream::width() const
Returns the field width. The default value is 0.
*/
/*!
\fn int TQTextStream::width( int w )
\overload
Sets the field width to \a w. Returns the previous field width.
*/
/*!
\fn int TQTextStream::fill() const
Returns the fill character. The default value is ' ' (space).
*/
/*!
\overload int TQTextStream::fill( int f )
Sets the fill character to \a f. Returns the previous fill character.
*/
/*!
\fn int TQTextStream::precision() const
Returns the precision. The default value is 6.
*/
/*!
\fn int TQTextStream::precision( int p )
\overload
Sets the precision to \a p. Returns the previous precision setting.
*/
/*****************************************************************************
TQTextStream manipulators
*****************************************************************************/
TQTextStream &bin( TQTextStream &s )
{
s.setf(TQTS::bin,TQTS::basefield);
return s;
}
TQTextStream &oct( TQTextStream &s )
{
s.setf(TQTS::oct,TQTS::basefield);
return s;
}
TQTextStream &dec( TQTextStream &s )
{
s.setf(TQTS::dec,TQTS::basefield);
return s;
}
TQTextStream &hex( TQTextStream &s )
{
s.setf(TQTS::hex,TQTS::basefield);
return s;
}
TQTextStream &endl( TQTextStream &s )
{
return s << '\n';
}
TQTextStream &flush( TQTextStream &s )
{
if ( s.device() )
s.device()->flush();
return s;
}
TQTextStream &ws( TQTextStream &s )
{
s.skipWhiteSpace();
return s;
}
TQTextStream &reset( TQTextStream &s )
{
s.reset();
return s;
}
/*!
\class TQTextIStream ntqtextstream.h
\reentrant
\brief The TQTextIStream class is a convenience class for input streams.
\ingroup io
\ingroup text
This class provides a shorthand for creating simple input
\l{TQTextStream}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
TQString data = "123 456";
int a, b;
TQTextIStream(&data) >> a >> b;
\endcode
\sa TQTextOStream
*/
/*!
\fn TQTextIStream::TQTextIStream( const TQString *s )
Constructs a stream to read from the string \a s.
*/
/*!
\fn TQTextIStream::TQTextIStream( TQByteArray ba )
Constructs a stream to read from the array \a ba.
*/
/*!
\fn TQTextIStream::TQTextIStream( FILE *f )
Constructs a stream to read from the file \a f.
*/
/*!
\class TQTextOStream
\reentrant
\brief The TQTextOStream class is a convenience class for output streams.
\ingroup io
\ingroup text
This class provides a shorthand for creating simple output
\l{TQTextStream}s without having to pass a \e mode argument to the
constructor.
This makes it easy for example, to write things like this:
\code
TQString result;
TQTextOStream(&result) << "pi = " << 3.14;
\endcode
*/
/*!
\fn TQTextOStream::TQTextOStream( TQString *s )
Constructs a stream to write to string \a s.
*/
/*!
\fn TQTextOStream::TQTextOStream( TQByteArray ba )
Constructs a stream to write to the array \a ba.
*/
/*!
\fn TQTextOStream::TQTextOStream( 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 TQString).
\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 TQTextStream::setEncoding( Encoding e )
{
if ( d->sourceType == TQTextStreamPrivate::String )
return;
switch ( e ) {
case Unicode:
mapper = 0;
latin1 = FALSE;
doUnicodeHeader = TRUE;
internalOrder = TRUE;
networkOrder = TQChar::networkOrdered();
break;
case UnicodeUTF8:
#ifndef TQT_NO_TEXTCODEC
mapper = TQTextCodec::codecForMib( 106 );
latin1 = FALSE;
doUnicodeHeader = TRUE;
internalOrder = TRUE;
networkOrder = TQChar::networkOrdered();
#else
mapper = 0;
latin1 = TRUE;
doUnicodeHeader = TRUE;
#endif
break;
case UnicodeNetworkOrder:
mapper = 0;
latin1 = FALSE;
doUnicodeHeader = TRUE;
internalOrder = TQChar::networkOrdered();
networkOrder = TRUE;
break;
case UnicodeReverse:
mapper = 0;
latin1 = FALSE;
doUnicodeHeader = TRUE;
internalOrder = !TQChar::networkOrdered();
networkOrder = FALSE;
break;
case RawUnicode:
mapper = 0;
latin1 = FALSE;
doUnicodeHeader = FALSE;
internalOrder = TRUE;
networkOrder = TQChar::networkOrdered();
break;
case Locale:
latin1 = TRUE; // fallback to Latin-1
#ifndef TQT_NO_TEXTCODEC
mapper = TQTextCodec::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 TQT_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 TQTextStream::setCodec( TQTextCodec *codec )
{
if ( d->sourceType == TQTextStreamPrivate::String )
return; // TQString 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
TQTextCodec::name() name() \endlink "ISO-10646-UCS-2" is returned.
\sa setCodec()
*/
TQTextCodec *TQTextStream::codec()
{
if ( mapper ) {
return mapper;
} else {
// 4 is "ISO 8859-1", 1000 is "ISO-10646-UCS-2"
return TQTextCodec::codecForMib( latin1 ? 4 : 1000 );
}
}
#endif
#endif // TQT_NO_TEXTSTREAM