739 lines
22 KiB
C++
739 lines
22 KiB
C++
#ifndef IOUTILITIES_BINERYREADER_H
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#define IOUTILITIES_BINERYREADER_H
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#include "../conversion/binaryconversion.h"
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#include <istream>
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#include <string>
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#include <vector>
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namespace CppUtilities {
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class CPP_UTILITIES_EXPORT BinaryReader {
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public:
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BinaryReader(std::istream *stream, bool giveOwnership = false);
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BinaryReader(const BinaryReader &other);
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BinaryReader &operator=(const BinaryReader &rhs) = delete;
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~BinaryReader();
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const std::istream *stream() const;
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std::istream *stream();
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void setStream(std::istream *stream, bool giveOwnership = false);
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bool hasOwnership() const;
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void giveOwnership();
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void detatchOwnership();
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bool fail() const;
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bool eof() const;
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bool canRead() const;
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std::istream::pos_type readStreamsize();
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std::istream::pos_type readRemainingBytes();
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void read(char *buffer, std::streamsize length);
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void read(std::uint8_t *buffer, std::streamsize length);
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void read(std::vector<char> &buffer, std::streamsize length);
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std::int16_t readInt16BE();
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std::uint16_t readUInt16BE();
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std::int32_t readInt24BE();
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std::uint32_t readUInt24BE();
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std::int32_t readInt32BE();
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std::uint32_t readUInt32BE();
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std::int64_t readInt40BE();
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std::uint64_t readUInt40BE();
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std::int64_t readInt56BE();
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std::uint64_t readUInt56BE();
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std::int64_t readInt64BE();
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std::uint64_t readUInt64BE();
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std::uint64_t readVariableLengthUIntBE();
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float readFloat32BE();
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double readFloat64BE();
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std::int16_t readInt16LE();
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std::uint16_t readUInt16LE();
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std::int32_t readInt24LE();
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std::uint32_t readUInt24LE();
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std::int32_t readInt32LE();
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std::uint32_t readUInt32LE();
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std::int64_t readInt40LE();
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std::uint64_t readUInt40LE();
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std::int64_t readInt56LE();
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std::uint64_t readUInt56LE();
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std::int64_t readInt64LE();
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std::uint64_t readUInt64LE();
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std::uint64_t readVariableLengthUIntLE();
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float readFloat32LE();
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double readFloat64LE();
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char readChar();
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std::uint8_t readByte();
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bool readBool();
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std::string readLengthPrefixedString();
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std::string readString(std::size_t length);
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std::string readTerminatedString(std::uint8_t termination = 0);
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std::string readTerminatedString(std::size_t maxBytesToRead, std::uint8_t termination = 0);
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std::uint32_t readSynchsafeUInt32BE();
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float readFixed8BE();
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float readFixed16BE();
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std::uint32_t readSynchsafeUInt32LE();
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float readFixed8LE();
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float readFixed16LE();
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std::uint32_t readCrc32(std::size_t length);
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static std::uint32_t computeCrc32(const char *buffer, std::size_t length);
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static const std::uint32_t crc32Table[];
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// declare further overloads for read() to ease use of BinaryReader in templates
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void read(char &oneCharacter);
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void read(std::uint8_t &oneByte);
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void read(bool &oneBool);
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void read(std::string &lengthPrefixedString);
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void read(std::int16_t &one16BitInt);
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void read(std::uint16_t &one16BitUInt);
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void read(std::int32_t &one32BitInt);
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void read(std::uint32_t &one32BitUInt);
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void read(std::int64_t &one64BitInt);
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void read(std::uint64_t &one64BitUInt);
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void read(float &one32BitFloat);
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void read(double &one64BitFloat);
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private:
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void bufferVariableLengthInteger();
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std::istream *m_stream;
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bool m_ownership;
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char m_buffer[8];
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};
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/*!
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* \brief Constructs a new BinaryReader.
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* \param stream Specifies the stream to read from.
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* \param giveOwnership Specifies whether the reader should take ownership.
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*/
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inline BinaryReader::BinaryReader(std::istream *stream, bool giveOwnership)
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: m_stream(stream)
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, m_ownership(giveOwnership)
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{
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}
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/*!
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* \brief Copies the specified BinaryReader.
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* \remarks The copy will not take ownership over the stream.
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*/
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inline BinaryReader::BinaryReader(const BinaryReader &other)
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: m_stream(other.m_stream)
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, m_ownership(false)
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{
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}
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/*!
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* \brief Destroys the BinaryReader.
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*/
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inline BinaryReader::~BinaryReader()
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{
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if (m_ownership) {
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delete m_stream;
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}
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}
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/*!
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* \brief Returns a pointer to the stream the reader will read from when calling one of the read-methods.
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*
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* \sa setStream()
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*/
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inline std::istream *BinaryReader::stream()
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{
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return m_stream;
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}
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/*!
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* \brief Returns a pointer to the stream the reader will read from when calling one of the read-methods.
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*
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* \sa setStream()
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*/
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inline const std::istream *BinaryReader::stream() const
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{
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return m_stream;
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}
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/*!
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* \brief Returns whether the reader takes ownership over the assigned stream.
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*
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* \sa setStream()
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* \sa giveOwnership()
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* \sa detatchOwnership()
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*/
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inline bool BinaryReader::hasOwnership() const
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{
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return m_ownership;
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}
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/*!
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* \brief The reader will take ownership over the assigned stream.
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*
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* \sa setStream()
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* \sa detatchOwnership()
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* \sa hasOwnership()
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*/
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inline void BinaryReader::giveOwnership()
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{
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if (m_stream) {
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m_ownership = true;
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}
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}
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/*!
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* \brief The reader will not take ownership over the assigned stream.
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*
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* \sa setStream()
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* \sa giveOwnership()
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* \sa hasOwnership()
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*/
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inline void BinaryReader::detatchOwnership()
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{
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m_ownership = false;
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}
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/*!
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* \brief Returns an indication whether the fail bit of the assigned stream is set.
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*/
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inline bool BinaryReader::fail() const
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{
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return m_stream ? m_stream->fail() : false;
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}
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/*!
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* \brief Returns an indication whether the end-of-stream bit of the assigned stream is set.
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*/
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inline bool BinaryReader::eof() const
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{
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return m_stream && m_stream->eof();
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}
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/*!
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* \brief Returns an indication whether a stream is assigned the reader can read from.
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*/
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inline bool BinaryReader::canRead() const
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{
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return m_stream && m_stream->good();
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}
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/*!
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* \brief Reads the specified number of characters from the stream in the character array.
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*/
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inline void BinaryReader::read(char *buffer, std::streamsize length)
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{
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m_stream->read(buffer, length);
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}
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/*!
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* \brief Reads the specified number of bytes from the stream in the character array.
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*/
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inline void BinaryReader::read(std::uint8_t *buffer, std::streamsize length)
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{
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m_stream->read(reinterpret_cast<char *>(buffer), length);
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}
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/*!
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* \brief Reads the specified number of bytes from the stream in the specified \a buffer.
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*/
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inline void BinaryReader::read(std::vector<char> &buffer, std::streamsize length)
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{
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buffer.resize(static_cast<std::vector<char>::size_type>(length));
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m_stream->read(buffer.data(), length);
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}
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/*!
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* \brief Reads a 16-bit big endian signed integer from the current stream and advances the current position of the stream by two bytes.
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*/
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inline std::int16_t BinaryReader::readInt16BE()
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{
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m_stream->read(m_buffer, sizeof(std::int16_t));
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return BE::toInt16(m_buffer);
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}
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/*!
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* \brief Reads a 16-bit big endian unsigned integer from the current stream and advances the current position of the stream by two bytes.
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*/
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inline std::uint16_t BinaryReader::readUInt16BE()
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{
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m_stream->read(m_buffer, sizeof(std::uint16_t));
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return BE::toUInt16(m_buffer);
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}
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/*!
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* \brief Reads a 24-bit big endian signed integer from the current stream and advances the current position of the stream by three bytes.
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*/
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inline std::int32_t BinaryReader::readInt24BE()
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{
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*m_buffer = 0;
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m_stream->read(m_buffer + 1, 3);
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auto val = BE::toInt32(m_buffer);
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if (val >= 0x800000) {
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val = -(0x1000000 - val);
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}
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return val;
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}
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/*!
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* \brief Reads a 24-bit big endian unsigned integer from the current stream and advances the current position of the stream by three bytes.
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*/
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inline std::uint32_t BinaryReader::readUInt24BE()
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{
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*m_buffer = 0;
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m_stream->read(m_buffer + 1, 3);
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return BE::toUInt32(m_buffer);
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}
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/*!
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* \brief Reads a 32-bit big endian signed integer from the current stream and advances the current position of the stream by four bytes.
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*/
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inline std::int32_t BinaryReader::readInt32BE()
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{
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m_stream->read(m_buffer, sizeof(std::int32_t));
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return BE::toInt32(m_buffer);
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}
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/*!
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* \brief Reads a 32-bit big endian unsigned integer from the current stream and advances the current position of the stream by four bytes.
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*/
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inline std::uint32_t BinaryReader::readUInt32BE()
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{
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m_stream->read(m_buffer, sizeof(std::uint32_t));
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return BE::toUInt32(m_buffer);
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}
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/*!
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* \brief Reads a 40-bit big endian signed integer from the current stream and advances the current position of the stream by five bytes.
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*/
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inline std::int64_t BinaryReader::readInt40BE()
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{
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*m_buffer = *(m_buffer + 1) = *(m_buffer + 2) = 0;
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m_stream->read(m_buffer + 3, 5);
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auto val = BE::toInt64(m_buffer);
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if (val >= 0x8000000000) {
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val = -(0x10000000000 - val);
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}
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return val;
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}
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/*!
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* \brief Reads a 40-bit big endian unsigned integer from the current stream and advances the current position of the stream by five bytes.
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*/
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inline std::uint64_t BinaryReader::readUInt40BE()
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{
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*m_buffer = *(m_buffer + 1) = *(m_buffer + 2) = 0;
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m_stream->read(m_buffer + 3, 5);
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return BE::toUInt64(m_buffer);
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}
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/*!
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* \brief Reads a 56-bit big endian signed integer from the current stream and advances the current position of the stream by seven bytes.
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*/
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inline std::int64_t BinaryReader::readInt56BE()
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{
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*m_buffer = 0;
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m_stream->read(m_buffer + 1, 7);
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auto val = BE::toInt64(m_buffer);
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if (val >= 0x80000000000000) {
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val = -(0x100000000000000 - val);
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}
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return val;
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}
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/*!
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* \brief Reads a 56-bit big endian unsigned integer from the current stream and advances the current position of the stream by seven bytes.
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*/
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inline std::uint64_t BinaryReader::readUInt56BE()
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{
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*m_buffer = 0;
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m_stream->read(m_buffer + 1, 7);
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return BE::toUInt64(m_buffer);
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}
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/*!
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* \brief Reads a 64-bit big endian signed integer from the current stream and advances the current position of the stream by eight bytes.
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*/
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inline std::int64_t BinaryReader::readInt64BE()
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{
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m_stream->read(m_buffer, sizeof(std::int64_t));
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return BE::toInt64(m_buffer);
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}
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/*!
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* \brief Reads a 64-bit big endian unsigned integer from the current stream and advances the current position of the stream by eight bytes.
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*/
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inline std::uint64_t BinaryReader::readUInt64BE()
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{
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m_stream->read(m_buffer, sizeof(std::uint64_t));
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return BE::toUInt64(m_buffer);
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}
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/*!
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* \brief Reads an up to 8 byte long big endian unsigned integer from the current stream and advances the current position of the stream by one to eight byte.
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* \throws Throws ConversionException if the size of the integer exceeds the maximum.
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*/
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inline std::uint64_t BinaryReader::readVariableLengthUIntBE()
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{
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bufferVariableLengthInteger();
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return BE::toUInt64(m_buffer);
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}
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/*!
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* \brief Reads a 32-bit big endian floating point value from the current stream and advances the current position of the stream by four bytes.
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*/
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inline float BinaryReader::readFloat32BE()
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{
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m_stream->read(m_buffer, sizeof(float));
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return BE::toFloat32(m_buffer);
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}
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/*!
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* \brief Reads a 64-bit big endian floating point value from the current stream and advances the current position of the stream by eight bytes.
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*/
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inline double BinaryReader::readFloat64BE()
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{
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m_stream->read(m_buffer, sizeof(double));
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return BE::toFloat64(m_buffer);
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}
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/*!
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* \brief Reads a 16-bit little endian signed integer from the current stream and advances the current position of the stream by two bytes.
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*/
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inline std::int16_t BinaryReader::readInt16LE()
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{
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m_stream->read(m_buffer, sizeof(std::int16_t));
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return LE::toInt16(m_buffer);
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}
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/*!
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* \brief Reads a 16-bit little endian unsigned integer from the current stream and advances the current position of the stream by two bytes.
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*/
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inline std::uint16_t BinaryReader::readUInt16LE()
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{
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m_stream->read(m_buffer, sizeof(std::uint16_t));
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return LE::toUInt16(m_buffer);
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}
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/*!
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* \brief Reads a 24-bit little endian signed integer from the current stream and advances the current position of the stream by three bytes.
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*/
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inline std::int32_t BinaryReader::readInt24LE()
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{
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*(m_buffer + 3) = 0;
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m_stream->read(m_buffer, 3);
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auto val = LE::toInt32(m_buffer);
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if (val >= 0x800000) {
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val = -(0x1000000 - val);
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}
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return val;
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}
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/*!
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* \brief Reads a 24-bit little endian unsigned integer from the current stream and advances the current position of the stream by three bytes.
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*/
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inline std::uint32_t BinaryReader::readUInt24LE()
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{
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*(m_buffer + 3) = 0;
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m_stream->read(m_buffer, 3);
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return LE::toUInt32(m_buffer);
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}
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/*!
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* \brief Reads a 32-bit little endian signed integer from the current stream and advances the current position of the stream by four bytes.
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*/
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inline std::int32_t BinaryReader::readInt32LE()
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{
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m_stream->read(m_buffer, sizeof(std::int32_t));
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return LE::toInt32(m_buffer);
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}
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/*!
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* \brief Reads a 32-bit little endian unsigned integer from the current stream and advances the current position of the stream by four bytes.
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*/
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inline std::uint32_t BinaryReader::readUInt32LE()
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{
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m_stream->read(m_buffer, sizeof(std::uint32_t));
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return LE::toUInt32(m_buffer);
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}
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/*!
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* \brief Reads a 40-bit little endian signed integer from the current stream and advances the current position of the stream by five bytes.
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*/
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inline std::int64_t BinaryReader::readInt40LE()
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{
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*(m_buffer + 5) = *(m_buffer + 6) = *(m_buffer + 7) = 0;
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m_stream->read(m_buffer, 5);
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auto val = LE::toInt64(m_buffer);
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if (val >= 0x8000000000) {
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val = -(0x10000000000 - val);
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}
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return val;
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}
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/*!
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* \brief Reads a 40-bit little endian unsigned integer from the current stream and advances the current position of the stream by five bytes.
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*/
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inline std::uint64_t BinaryReader::readUInt40LE()
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{
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*(m_buffer + 5) = *(m_buffer + 6) = *(m_buffer + 7) = 0;
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m_stream->read(m_buffer, 5);
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return LE::toUInt64(m_buffer);
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}
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/*!
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* \brief Reads a 56-bit little endian signed integer from the current stream and advances the current position of the stream by seven bytes.
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*/
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inline std::int64_t BinaryReader::readInt56LE()
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{
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*(m_buffer + 7) = 0;
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m_stream->read(m_buffer, 7);
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auto val = LE::toInt64(m_buffer);
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if (val >= 0x80000000000000) {
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val = -(0x100000000000000 - val);
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}
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return val;
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}
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/*!
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* \brief Reads a 56-bit little endian unsigned integer from the current stream and advances the current position of the stream by seven bytes.
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*/
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inline std::uint64_t BinaryReader::readUInt56LE()
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{
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*(m_buffer + 7) = 0;
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m_stream->read(m_buffer, 7);
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return LE::toUInt64(m_buffer);
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}
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/*!
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* \brief Reads a 64-bit little endian signed integer from the current stream and advances the current position of the stream by eight bytes.
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*/
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inline std::int64_t BinaryReader::readInt64LE()
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{
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m_stream->read(m_buffer, sizeof(std::int64_t));
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return LE::toInt64(m_buffer);
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}
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/*!
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* \brief Reads a 64-bit little endian unsigned integer from the current stream and advances the current position of the stream by eight bytes.
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*/
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inline std::uint64_t BinaryReader::readUInt64LE()
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{
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m_stream->read(m_buffer, sizeof(std::uint64_t));
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return LE::toUInt64(m_buffer);
|
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}
|
|
|
|
/*!
|
|
* \brief Reads an up to 8 byte long little endian unsigned integer from the current stream and advances the current position of the stream by one to eight byte.
|
|
* \throws Throws ConversionException if the size of the integer exceeds the maximum.
|
|
*/
|
|
inline std::uint64_t BinaryReader::readVariableLengthUIntLE()
|
|
{
|
|
bufferVariableLengthInteger();
|
|
return LE::toUInt64(m_buffer);
|
|
}
|
|
|
|
/*!
|
|
* \brief Reads a 32-bit little endian floating point value from the current stream and advances the current position of the stream by four bytes.
|
|
*/
|
|
inline float BinaryReader::readFloat32LE()
|
|
{
|
|
m_stream->read(m_buffer, sizeof(float));
|
|
return LE::toFloat32(m_buffer);
|
|
}
|
|
|
|
/*!
|
|
* \brief Reads a 64-bit little endian floating point value from the current stream and advances the current position of the stream by eight bytes.
|
|
*/
|
|
inline double BinaryReader::readFloat64LE()
|
|
{
|
|
m_stream->read(m_buffer, sizeof(double));
|
|
return LE::toFloat64(m_buffer);
|
|
}
|
|
|
|
/*!
|
|
* \brief Reads a single character from the current stream and advances the current position of the stream by one byte.
|
|
*/
|
|
inline char BinaryReader::readChar()
|
|
{
|
|
m_stream->read(m_buffer, sizeof(char));
|
|
return m_buffer[0];
|
|
}
|
|
|
|
/*!
|
|
* \brief Reads a single byte/unsigned character from the current stream and advances the current position of the stream by one byte.
|
|
*/
|
|
inline uint8_t BinaryReader::readByte()
|
|
{
|
|
m_stream->read(m_buffer, sizeof(char));
|
|
return static_cast<std::uint8_t>(m_buffer[0]);
|
|
}
|
|
|
|
/*!
|
|
* \brief Reads a boolean value from the current stream and advances the current position of the stream by one byte.
|
|
* \sa BitReader
|
|
*/
|
|
inline bool BinaryReader::readBool()
|
|
{
|
|
return readByte() != 0;
|
|
}
|
|
|
|
/*!
|
|
* \brief Reads a length prefixed string from the current stream.
|
|
* \remarks Reads the length prefix from the stream and then a string of the denoted length.
|
|
* Advances the current position of the stream by the denoted length of the string plus the prefix length.
|
|
*/
|
|
inline std::string BinaryReader::readLengthPrefixedString()
|
|
{
|
|
return readString(readVariableLengthUIntBE());
|
|
}
|
|
|
|
/*!
|
|
* \brief Reads a 32-bit big endian synchsafe integer from the current stream and advances the current position of the stream by four bytes.
|
|
* \remarks Synchsafe integers appear in ID3 tags that are attached to an MP3 file.
|
|
* \sa <a href="http://id3.org/id3v2.4.0-structure">ID3 tag version 2.4.0 - Main Structure</a>
|
|
*/
|
|
inline std::uint32_t BinaryReader::readSynchsafeUInt32BE()
|
|
{
|
|
return toNormalInt(readUInt32BE());
|
|
}
|
|
|
|
/*!
|
|
* \brief Reads a 8.8 fixed point big endian representation from the current stream and returns it as 32-bit floating point value.
|
|
*/
|
|
inline float BinaryReader::readFixed8BE()
|
|
{
|
|
return toFloat32(readUInt16BE());
|
|
}
|
|
|
|
/*!
|
|
* \brief Reads a 16.16 fixed point big endian representation from the current stream and returns it as 32-bit floating point value.
|
|
*/
|
|
inline float BinaryReader::readFixed16BE()
|
|
{
|
|
return toFloat32(readUInt32BE());
|
|
}
|
|
|
|
/*!
|
|
* \brief Reads a 32-bit little endian synchsafe integer from the current stream and advances the current position of the stream by four bytes.
|
|
* \remarks Synchsafe integers appear in ID3 tags that are attached to an MP3 file.
|
|
* \sa <a href="http://id3.org/id3v2.4.0-structure">ID3 tag version 2.4.0 - Main Structure</a>
|
|
*/
|
|
inline std::uint32_t BinaryReader::readSynchsafeUInt32LE()
|
|
{
|
|
return toNormalInt(readUInt32LE());
|
|
}
|
|
|
|
/*!
|
|
* \brief Reads a 8.8 fixed point little endian representation from the current stream and returns it as 32-bit floating point value.
|
|
*/
|
|
inline float BinaryReader::readFixed8LE()
|
|
{
|
|
return toFloat32(readUInt16LE());
|
|
}
|
|
|
|
/*!
|
|
* \brief Reads a 16.16 fixed point little endian representation from the current stream and returns it as 32-bit floating point value.
|
|
*/
|
|
inline float BinaryReader::readFixed16LE()
|
|
{
|
|
return toFloat32(readUInt32LE());
|
|
}
|
|
|
|
/*!
|
|
* \brief Reads a single character from the current stream and advances the current position of the stream by one byte.
|
|
*/
|
|
inline void BinaryReader::read(char &oneCharacter)
|
|
{
|
|
oneCharacter = readChar();
|
|
}
|
|
|
|
/*!
|
|
* \brief Reads a single byte/unsigned character from the current stream and advances the current position of the stream by one byte.
|
|
*/
|
|
inline void BinaryReader::read(std::uint8_t &oneByte)
|
|
{
|
|
oneByte = readByte();
|
|
}
|
|
|
|
/*!
|
|
* \brief Reads a boolean value from the current stream and advances the current position of the stream by one byte.
|
|
* \sa BitReader
|
|
*/
|
|
inline void BinaryReader::read(bool &oneBool)
|
|
{
|
|
oneBool = readBool();
|
|
}
|
|
|
|
/*!
|
|
* \brief Reads a length prefixed string from the current stream.
|
|
*
|
|
* \remarks Reads the length prefix from the stream and then a string of the denoted length.
|
|
* Advances the current position of the stream by the denoted length of the string plus the prefix length.
|
|
*/
|
|
inline void BinaryReader::read(std::string &lengthPrefixedString)
|
|
{
|
|
lengthPrefixedString = readLengthPrefixedString();
|
|
}
|
|
|
|
/*!
|
|
* \brief Reads a 16-bit big endian signed integer from the current stream and advances the current position of the stream by two bytes.
|
|
*/
|
|
inline void BinaryReader::read(std::int16_t &one16BitInt)
|
|
{
|
|
one16BitInt = readInt16BE();
|
|
}
|
|
|
|
/*!
|
|
* \brief Reads a 16-bit big endian unsigned integer from the current stream and advances the current position of the stream by two bytes.
|
|
*/
|
|
inline void BinaryReader::read(std::uint16_t &one16BitUInt)
|
|
{
|
|
one16BitUInt = readUInt16BE();
|
|
}
|
|
|
|
/*!
|
|
* \brief Reads a 16-bit big endian signed integer from the current stream and advances the current position of the stream by two bytes.
|
|
*/
|
|
inline void BinaryReader::read(std::int32_t &one32BitInt)
|
|
{
|
|
one32BitInt = readInt32BE();
|
|
}
|
|
|
|
/*!
|
|
* \brief Reads a 32-bit big endian unsigned integer from the current stream and advances the current position of the stream by four bytes.
|
|
*/
|
|
inline void BinaryReader::read(std::uint32_t &one32BitUInt)
|
|
{
|
|
one32BitUInt = readUInt32BE();
|
|
}
|
|
|
|
/*!
|
|
* \brief Reads a 64-bit big endian signed integer from the current stream and advances the current position of the stream by eight bytes.
|
|
*/
|
|
inline void BinaryReader::read(std::int64_t &one64BitInt)
|
|
{
|
|
one64BitInt = readInt64BE();
|
|
}
|
|
|
|
/*!
|
|
* \brief Reads a 64-bit big endian unsigned integer from the current stream and advances the current position of the stream by eight bytes.
|
|
*/
|
|
inline void BinaryReader::read(std::uint64_t &one64BitUInt)
|
|
{
|
|
one64BitUInt = readUInt64BE();
|
|
}
|
|
|
|
/*!
|
|
* \brief Reads a 32-bit big endian floating point value from the current stream and advances the current position of the stream by four bytes.
|
|
*/
|
|
inline void BinaryReader::read(float &one32BitFloat)
|
|
{
|
|
one32BitFloat = readFloat32BE();
|
|
}
|
|
|
|
/*!
|
|
* \brief Reads a 64-bit big endian floating point value from the current stream and advances the current position of the stream by eight bytes.
|
|
*/
|
|
inline void BinaryReader::read(double &one64BitFloat)
|
|
{
|
|
one64BitFloat = readFloat64BE();
|
|
}
|
|
} // namespace CppUtilities
|
|
|
|
#endif // IOUTILITIES_BINERYREADER_H
|