81 lines
2 KiB
C++
81 lines
2 KiB
C++
/**
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* Furnace Tracker - multi-system chiptune tracker
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* Copyright (C) 2021-2023 tildearrow and contributors
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*
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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 General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef _SAFEREADER_H
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#define _SAFEREADER_H
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdint.h>
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#include "../ta-utils.h"
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enum Endianness {
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LittleEndian=0,
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BigEndian
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};
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class SafeReader;
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struct EndOfFileException {
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SafeReader* reader;
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size_t finalSize;
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EndOfFileException(SafeReader* r, size_t fs):
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reader(r),
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finalSize(fs) {}
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};
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class SafeReader {
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const unsigned char* buf;
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size_t len;
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size_t curSeek;
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public:
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bool seek(ssize_t where, int whence);
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size_t tell();
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size_t size();
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int read(void* where, size_t count);
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// these functions may throw EndOfFileException.
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signed char readC();
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short readS();
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short readS_BE();
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int readI();
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int readI_BE();
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int64_t readL();
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int64_t readL_BE();
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float readF();
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float readF_BE();
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double readD();
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double readD_BE();
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String readString();
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String readString(size_t len);
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String readStringLine();
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String readStringToken(unsigned char delim, bool stripContiguous);
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String readStringToken();
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inline bool isEOF() { return curSeek >= len; };
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SafeReader(const void* b, size_t l):
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buf((const unsigned char*)b),
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len(l),
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curSeek(0) {}
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};
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#endif
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