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/***************************************************************************
strmoper.cc - Stream operations
---------------------------------------------------------------------
May, 2000
Copyright (C) 2000 by Warlei Alves
walves@usa.net
Modified by Salvador E. Tropea to compile without warnings.
For gcc 2.95.x and then 3.0.1.
***************************************************************************/
/***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
#define Uses_stdio
#define Uses_string
// didn't find std::ios (AP)
#define Uses_iostream
#define Uses_MsgBox
#define Uses_TFileDialog
#define Uses_TProgram
#define Uses_TApplication
#define Uses_TDeskTop
#define Uses_ofpstream
#define Uses_ifpstream
#include <tv.h>
#include "strmoper.h"
UsingNamespaceStd
bool fileExists(const char * FileName)
{
FILE * test;
bool rst = ((test = fopen(FileName, "r")) != 0);
if (rst) fclose(test);
return rst;
}
// SET: This function was originaly declared as const char * and returned a
// pointer to a temporal variable in the stack. Nicola Asuni found it and
// suggested a partial workaround. I then modified the function to return
// a char * using newStr to allocate it. I also modified all the points
// where this function is used (at least all that I found) to release the
// returned value.
char * getFileName(const char * aTitle, const char * ext, int Mode)
{
TFileDialog *d = 0;
int cmd = cmCancel;
if (Mode == 0)
d = (TFileDialog *) TProgram::application->validView( new
TFileDialog(ext, aTitle, _("File"), fdOpenButton, 100) );
else
d = (TFileDialog *) TProgram::application->validView( new
TFileDialog(ext, aTitle, _("File"), fdOKButton, 100) );
if (d != 0) cmd = TProgram::deskTop->execView( d );
if ( cmd != cmCancel )
{
char fileName[PATH_MAX];
d->getFileName( fileName );
delete d;
return newStr( fileName );
}
else return NULL;
}
ifpstream * openFile(const char * FileName, char * Signature)
{
if (!fileExists(FileName)) return 0;
ifpstream * rst = new ifpstream( FileName, ios::in|ios::binary );
char buf[50];
if (rst)
{
rst->readBytes(&buf, strlen(Signature) + 1);
if (strcmp(buf, Signature) != 0)
{
delete rst;
return 0;
}
}
return rst;
}
ofpstream * initFile(const char * FileName, char * current, char * Signature)
{
if ( fileExists(FileName) &&
( current == 0 || strcmp(FileName, current) != 0 ) )
{
if ( messageBox(__("The file already exists. Overwrite it?"),
mfYesNoCancel) != cmYes ) return 0;
}
ofpstream * rst = new ofpstream( FileName, ios::in|ios::binary );
if (rst) rst->writeBytes(Signature, strlen(Signature) + 1);
return rst;
}
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