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