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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Our base String stream classes. We implement these to
* be based on Glib::ustring
*
* Authors:
* Bob Jamison <rjamison@titan.com>
*
* Copyright (C) 2004 Inkscape.org
*
* Released under GNU GPL v2+, read the file 'COPYING' for more information.
*/
#include "uristream.h"
#include "io/sys.h"
namespace Inkscape
{
namespace IO
{
//#########################################################################
//# F I L E I N P U T S T R E A M
//#########################################################################
/**
*
*/
FileInputStream::FileInputStream(FILE *source)
: inf(source)
{
if (!inf) {
Glib::ustring err = "FileInputStream passed NULL";
throw StreamException(err);
}
}
/**
*
*/
FileInputStream::~FileInputStream()
{
close();
}
/**
* Returns the number of bytes that can be read (or skipped over) from
* this input stream without blocking by the next caller of a method for
* this input stream.
*/
int FileInputStream::available()
{
return 0;
}
/**
* Closes this input stream and releases any system resources
* associated with the stream.
*/
void FileInputStream::close()
{
if (!inf)
return;
fflush(inf);
fclose(inf);
inf=nullptr;
}
/**
* Reads the next byte of data from the input stream. -1 if EOF
*/
int FileInputStream::get()
{
int retVal = -1;
if (!inf || feof(inf))
{
retVal = -1;
}
else
{
retVal = fgetc(inf);
}
return retVal;
}
//#########################################################################
//# F I L E O U T P U T S T R E A M
//#########################################################################
FileOutputStream::FileOutputStream(FILE *fp)
: ownsFile(false)
, outf(fp)
{
if (!outf) {
Glib::ustring err = "FileOutputStream given null file ";
throw StreamException(err);
}
}
/**
*
*/
FileOutputStream::~FileOutputStream()
{
close();
}
/**
* Closes this output stream and releases any system resources
* associated with this stream.
*/
void FileOutputStream::close()
{
if (!outf)
return;
fflush(outf);
if ( ownsFile )
fclose(outf);
outf=nullptr;
}
/**
* Flushes this output stream and forces any buffered output
* bytes to be written out.
*/
void FileOutputStream::flush()
{
if (!outf)
return;
fflush(outf);
}
/**
* Writes the specified byte to this output stream.
*/
int FileOutputStream::put(char ch)
{
unsigned char uch;
if (!outf)
return -1;
uch = (unsigned char)(ch & 0xff);
if (fputc(uch, outf) == EOF) {
Glib::ustring err = "ERROR writing to file ";
throw StreamException(err);
}
return 1;
}
} // namespace IO
} // namespace Inkscape
//#########################################################################
//# E N D O F F I L E
//#########################################################################
// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :
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