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/*
simple file access interface.
Copyright (C) 2001 Martin Vogt
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Library General Public License as published by
the Free Software Foundation.
For more information look at the file COPYRIGHT in this package
*/
#include "fileAccess.h"
FileAccess::FileAccess() {
file=NULL;
length=0;
}
FileAccess::~FileAccess() {
close();
}
int FileAccess::open(const char* path) {
close();
file=fopen(path,"rb");
length=calcByteLength();
return (file != NULL);
}
void FileAccess::close() {
if (file != NULL) {
fclose(file);
file=NULL;
length=0;
}
}
int FileAccess::read(char* dest,int len) {
int back=0;
if (file != NULL) {
back=fread(dest,1,len,file);
} else {
printf("FileAccess::read not open\n");
}
return back;
}
int FileAccess::eof() {
int back=true;
if (file != NULL) {
back=feof(file);
}
return back;
}
int FileAccess::seek(long pos) {
if (file == NULL) {
return -1;
}
return fseek(file,pos,SEEK_SET);
}
long FileAccess::getBytePosition() {
if (file == NULL) {
return 0;
}
return ftell(file);
}
long FileAccess::getByteLength() {
return length;
}
long FileAccess::calcByteLength() {
if (file == NULL) {
return 0;
}
long pos=getBytePosition();
fseek(file,0,SEEK_END);
long back=getBytePosition();
fseek(file,pos,SEEK_SET);
return back;
}
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