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/*
* IO layer : handles for URIs
*
* Authors:
* Johan Ceuppens <jceuppen at easynet dot be>
*
* Copyright (C) 2004 Johan Ceuppens
*
* Released under GNU LGPL, read the file 'COPYING.LIB' for more information
*/
#include "streams-handles.h"
#include "uri.h"
#include <iostream>
namespace Inkscape {
/**
* FileHandle
*/
int FileHandle::open(URI const& uri, char const* mode)
{
if (sys_open(uri, mode) == 0)
return 0;
else
return 1;
}
FILE *FileHandle::sys_open(URI const& uri, char const* mode)
{
gchar *filename = uri.toNativeFilename();
if ((fp = std::fopen(filename, mode)) == 0) {
error("fopen");
}
#ifdef DEBUG_STREAMS
std::cout<<"file opened fp="<<fp<<std::endl;
#endif
return fp;
}
void FileHandle::close()
{
sys_close();
}
void FileHandle::sys_close()
{
fclose(fp);
}
int FileHandle::read(void *buf, int buflen)
{
return sys_read(buf, buflen);
}
int FileHandle::sys_read (void *buf, int buflen) throw(ReadException)
{
int nbytes = 0;
if ((nbytes = std::fread(buf, 1, buflen, fp)) < 0) {
if (ferror(fp)) {
error("fread");
throw ReadException();
}
}
if (nbytes == 0)
return EOF;
else
return nbytes;
}
int FileHandle::write (void const *buf, int buflen)
{
return sys_write(buf, buflen);
}
int FileHandle::sys_write (void const *buf, int buflen) throw(WriteException)
{
int nbytes = 0;
if ((nbytes = std::fwrite(buf, 1, buflen, fp)) < 0) {
error("fwrite");
throw WriteException();
}
return nbytes;
}
int FileHandle::seek(long offset, int whence)
{
return sys_seek(offset, whence);
}
int FileHandle::sys_seek(long offset, int whence)
{
int result;
if ((result = fseek(fp, offset, whence)) < 0) {
error("fseek");
}
return result;
}
void FileHandle::error(char const *errstr)
{
std::cerr<<"error FileHandle: "<<errstr<<std::endl;
}
} // namespace Inkscape
/*
Local Variables:
mode:c++
c-file-style:"stroustrup"
c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
indent-tabs-mode:nil
fill-column:99
End:
*/
// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :
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