Input stream. More...

#include <kanzi/core/legacy/util/io/kzc_io_stream.hpp>
#include <kanzi/core/cpp/cstddef.hpp>
#include <kanzi/core/cpp/cstdint.hpp>
#include <kanzi/core/legacy/debug/kzs_error.hpp>

Macros
#define	KZC_INPUT_STREAM_BUFFER_DEFAULT_SIZE
	Default size for input stream buffer. More...

Typedefs
typedef kzsError(*	KzcCustomInputStreamDeleteFunction) (void *customData)
	Function type for deleting custom input stream. More...

typedef kzsError(*	KzcCustomInputStreamReadFunction) (void customData, kzUint byteCount, kzUint out_bytesReadCount, kanzi::byte *out_bytes)
	Function type for reading bytes from custom input stream. More...

typedef kzsException(*	KzcCustomInputStreamSkipFunction) (void *customData, kzUint skipAmount)
	Function type for skipping in a custom input stream. More...

Functions
KANZI_API kzsException	kzcInputStreamCreateFromFile (const struct KzcMemoryManager memoryManager, kzString filePath, enum KzcIOStreamEndianness endianness, struct KzcInputStream *out_inputStream)
	Creates an input stream pointing to a file, whose path is given as a parameter. More...

KANZI_API kzsException	kzcInputStreamCreateFromResource (const struct KzcMemoryManager memoryManager, kzString resourcePath, enum KzcIOStreamEndianness endianness, struct KzcInputStream *out_inputStream)
	Creates an input stream pointing to a resource file, whose path is given as a parameter. More...

KANZI_API kzsException	kzcInputStreamCreateFromMemory (const struct KzcMemoryManager memoryManager, const kanzi::byte buffer, kzUint size, enum KzcIOStreamEndianness endianness, struct KzcInputStream **out_inputStream)
	Creates an input stream pointing to a given memory buffer of given size. More...

KANZI_API kzsException	kzcInputStreamCreateFromMemoryTemporary (const struct KzcMemoryManager memoryManager, const kanzi::byte buffer, kzUint size, enum KzcIOStreamEndianness endianness, struct KzcInputStream **out_inputStream)
	Creates an input stream pointing to a given memory buffer of given size. More...

KANZI_API kzsException	kzcInputStreamCreateFromStream (const struct KzcMemoryManager memoryManager, struct KzcInputStream targetInputStream, kzInt targetLength, enum KzcIOStreamEndianness endianness, struct KzcInputStream **out_inputStream)
	Creates an input stream pointing to another input stream. More...

KANZI_API kzsException	kzcInputStreamCreateCustom (const struct KzcMemoryManager memoryManager, void customData, KzcCustomInputStreamDeleteFunction deleteFunction, KzcCustomInputStreamReadFunction readFunction, KzcCustomInputStreamSkipFunction skipFunction, enum KzcIOStreamEndianness endianness, struct KzcInputStream **out_inputStream)
	Creates an input stream using custom read functions. More...

KANZI_API kzsError	kzcInputStreamDelete (struct KzcInputStream *inputStream)
	Deletes an input stream. More...

KANZI_API kzsError	kzcInputStreamInitBuffer (struct KzcInputStream *inputStream, kzUint bufferSize)
	Initializes the size of input stream buffer. More...

KANZI_API kzsException	kzcInputStreamRead (struct KzcInputStream inputStream, kzUint byteCount, kzUint out_bytesReadCount, kanzi::byte *out_bytes)
	Reads some amount of bytes from the given input stream. More...

KANZI_API kzsException	kzcInputStreamTryMap (struct KzcInputStream inputStream, kzUint byteCount, const kanzi::byte *out_data)
	If the input stream is memory based, this will get a pointer to the current position and will advance the stream by byteCount. More...

KANZI_API kzsException	kzcInputStreamSkip (struct KzcInputStream *inputStream, kzUint skipByteCount)
	Skips the given amount of bytes in an input stream. More...

KANZI_API kzUint	kzcInputStreamGetPosition (const struct KzcInputStream *inputStream)
	Gets the current position in an input stream. More...

KANZI_API enum KzcIOStreamEndianness	kzcInputStreamGetEndianness (const struct KzcInputStream *inputStream)
	Gets endianness of input stream. More...

KANZI_API void	kzcInputStreamSetEndianness (struct KzcInputStream *inputStream, enum KzcIOStreamEndianness endianness)
	Sets endianness for input stream. More...

KANZI_API kzsException	kzcInputStreamReadBytes (struct KzcInputStream inputStream, kzUint byteCount, kanzi::byte out_bytes)
	Reads given amount of bytes from the input stream. More...

KANZI_API kzsException	kzcInputStreamReadBoolean (struct KzcInputStream inputStream, kzBool out_value)
	Reads a boolean from an input stream. More...

KANZI_API kzsException	kzcInputStreamReadBoolean (struct KzcInputStream inputStream, bool out_value)

KANZI_API kzsException	kzcInputStreamReadU8 (struct KzcInputStream inputStream, kzU8 out_value)
	Reads an unsigned 8-bit value from an input stream. More...

KANZI_API kzsException	kzcInputStreamReadU8Int (struct KzcInputStream inputStream, kzUint out_value)
	Reads an unsigned 8-bit value casted to an unsigned integer from an input stream. More...

KANZI_API kzsException	kzcInputStreamReadS8 (struct KzcInputStream inputStream, kzS8 out_value)
	Reads a signed 8-bit value from an input stream. More...

KANZI_API kzsException	kzcInputStreamReadS8Int (struct KzcInputStream inputStream, kzInt out_value)
	Reads a signed 8-bit value casted to a signed integer from an input stream. More...

KANZI_API kzsException	kzcInputStreamReadU16 (struct KzcInputStream inputStream, kzU16 out_value)
	Reads an unsigned 16-bit value from an input stream. More...

KANZI_API kzsException	kzcInputStreamReadU16Array (struct KzcInputStream inputStream, kzUint valueCount, kzU16 values)
	Reads an array of 16-bit values form an input stream. More...

KANZI_API kzsException	kzcInputStreamReadU16Int (struct KzcInputStream inputStream, kzUint out_value)
	Reads an unsigned 16-bit value casted to an unsigned integer from an input stream. More...

KANZI_API kzsException	kzcInputStreamReadS16 (struct KzcInputStream inputStream, kzS16 out_value)
	Reads a signed 16-bit value from an input stream. More...

KANZI_API kzsException	kzcInputStreamReadS16Array (struct KzcInputStream inputStream, kzUint valueCount, kzS16 values)
	Reads an array of signed 16-bit values form an input stream. More...

KANZI_API kzsException	kzcInputStreamReadS16Int (struct KzcInputStream inputStream, kzInt out_value)
	Reads a signed 16-bit value casted to a signed integer from an input stream. More...

KANZI_API kzsException	kzcInputStreamReadU32 (struct KzcInputStream inputStream, kzU32 out_value)
	Reads an unsigned 32-bit value from an input stream. More...

KANZI_API kzsException	kzcInputStreamReadU32Array (struct KzcInputStream inputStream, kzUint valueCount, kzU32 values)
	Reads an array of unsigned 32-bit values from an input stream. More...

KANZI_API kzsException	kzcInputStreamReadU32Int (struct KzcInputStream inputStream, kzUint out_value)
	Reads an unsigned 32-bit value casted to an unsigned integer from an input stream. More...

KANZI_API kzsException	kzcInputStreamReadS32 (struct KzcInputStream inputStream, kzS32 out_value)
	Reads a signed 32-bit value from an input stream. More...

KANZI_API kzsException	kzcInputStreamReadS32Array (struct KzcInputStream inputStream, kzUint valueCount, kzS32 values)
	Reads an array of signed 32-bit values from an input stream. More...

KANZI_API kzsException	kzcInputStreamReadS32Int (struct KzcInputStream inputStream, kzInt out_value)
	Reads a signed 32-bit value casted to a signed integer from an input stream. More...

KANZI_API kzsException	kzcInputStreamReadFloat (struct KzcInputStream inputStream, kzFloat out_value)
	Reads a 32-bit floating point value from an input stream. More...

KANZI_API kzsException	kzcInputStreamReadFloatArray (struct KzcInputStream inputStream, kzUint valueCount, kzFloat values)
	Reads a float array from an input stream. More...

KANZI_API kzsException	kzcInputStreamReadDouble (struct KzcInputStream inputStream, kzDouble out_value)
	Reads a 64-bit floating point value from an input stream. More...

KANZI_API kzsException	kzcInputStreamReadAllBytes (struct KzcInputStream inputStream, const struct KzcMemoryManager memoryManager, kzUint out_size, kanzi::byte *out_data)
	Reads the rest of the input stream to an array of bytes. More...

KANZI_API kzsException	kzcInputStreamReadText (struct KzcInputStream inputStream, const struct KzcMemoryManager memoryManager, kzMutableString *out_string)
	Reads the rest of the input stream to a string. More...

KANZI_API kzsException	kzcInputStreamReadTextLines (struct KzcInputStream inputStream, const struct KzcMemoryManager memoryManager, kzMutableString **out_lines)
	Reads the rest of the input stream to an array of strings. More...

Detailed Description

Input stream.

Input streams are used for reading binary data from several different data sources. Supprted data sources are:

Files
Resources
Memory buffers
Nested input streams

Streams are configured to read data in either little-endian, big-endian or platform's native endianness format.

Macro Definition Documentation

#define KZC_INPUT_STREAM_BUFFER_DEFAULT_SIZE

Default size for input stream buffer.

Typedef Documentation

typedef kzsError(* KzcCustomInputStreamDeleteFunction) (void *customData)

Function type for deleting custom input stream.

typedef kzsError(* KzcCustomInputStreamReadFunction) (void *customData, kzUint byteCount, kzUint *out_bytesReadCount, kanzi::byte *out_bytes)

Function type for reading bytes from custom input stream.

typedef kzsException(* KzcCustomInputStreamSkipFunction) (void *customData, kzUint skipAmount)

Function type for skipping in a custom input stream.

Function Documentation

KANZI_API kzsException kzcInputStreamCreateFromFile	(	const struct KzcMemoryManager *	memoryManager,
		kzString	filePath,
		enum KzcIOStreamEndianness	endianness,
		struct KzcInputStream **	out_inputStream
	)

Creates an input stream pointing to a file, whose path is given as a parameter.

KANZI_API kzsException kzcInputStreamCreateFromResource	(	const struct KzcMemoryManager *	memoryManager,
		kzString	resourcePath,
		enum KzcIOStreamEndianness	endianness,
		struct KzcInputStream **	out_inputStream
	)

Creates an input stream pointing to a resource file, whose path is given as a parameter.

KANZI_API kzsException kzcInputStreamCreateFromMemory	(	const struct KzcMemoryManager *	memoryManager,
		const kanzi::byte *	buffer,
		kzUint	size,
		enum KzcIOStreamEndianness	endianness,
		struct KzcInputStream **	out_inputStream
	)

Creates an input stream pointing to a given memory buffer of given size.

KANZI_API kzsException kzcInputStreamCreateFromMemoryTemporary	(	const struct KzcMemoryManager *	memoryManager,
		const kanzi::byte *	buffer,
		kzUint	size,
		enum KzcIOStreamEndianness	endianness,
		struct KzcInputStream **	out_inputStream
	)

Creates an input stream pointing to a given memory buffer of given size.

Even if this is a stream from memory buffer, it is considered temporary and cannot be mapped.

KANZI_API kzsException kzcInputStreamCreateFromStream	(	const struct KzcMemoryManager *	memoryManager,
		struct KzcInputStream *	targetInputStream,
		kzInt	targetLength,
		enum KzcIOStreamEndianness	endianness,
		struct KzcInputStream **	out_inputStream
	)

Creates an input stream pointing to another input stream.

Length of the target input stream can be given as a parameter. In this case the stream will read at most that many bytes from the target stream and possibly unread bytes are skipped when deleting the stream.

Parameters

targetLength Length of the target input stream or KZC_IO_STREAM_LENGTH_UNKNOWN if unknown.

KANZI_API kzsException kzcInputStreamCreateCustom	(	const struct KzcMemoryManager *	memoryManager,
		void *	customData,
		KzcCustomInputStreamDeleteFunction	deleteFunction,
		KzcCustomInputStreamReadFunction	readFunction,
		KzcCustomInputStreamSkipFunction	skipFunction,
		enum KzcIOStreamEndianness	endianness,
		struct KzcInputStream **	out_inputStream
	)

Creates an input stream using custom read functions.

KANZI_API kzsError kzcInputStreamDelete ( struct KzcInputStream * inputStream )

Deletes an input stream.

KANZI_API kzsError kzcInputStreamInitBuffer	(	struct KzcInputStream *	inputStream,
		kzUint	bufferSize
	)

Initializes the size of input stream buffer.

KANZI_API kzsException kzcInputStreamRead	(	struct KzcInputStream *	inputStream,
		kzUint	byteCount,
		kzUint *	out_bytesReadCount,
		kanzi::byte *	out_bytes
	)

Reads some amount of bytes from the given input stream.

The maximum number of bytes is given as parameter and the actual number of bytes read is returned. Negative number is returned, if no bytes can be read because end of stream has been reached. This function can be used to read input stream where the number of expected bytes available is not known.

KANZI_API kzsException kzcInputStreamTryMap	(	struct KzcInputStream *	inputStream,
		kzUint	byteCount,
		const kanzi::byte **	out_data
	)

If the input stream is memory based, this will get a pointer to the current position and will advance the stream by byteCount.

If the input stream is not memory based, this will give out a null-pointer.

Parameters

byteCount	The number of bytes that the stream will be advanced by if mapping is successful.
out_data	Will be set to the memory-address of current position if mapping is successful, otherwise will be set to KZ_NULL.

Returns: KZC_EXCEPTION_END_OF_STREAM if byteCount larger that bytes left in the stream, otherwise KZS_SUCCESS.

KANZI_API kzsException kzcInputStreamSkip	(	struct KzcInputStream *	inputStream,
		kzUint	skipByteCount
	)

Skips the given amount of bytes in an input stream.

KANZI_API kzUint kzcInputStreamGetPosition ( const struct KzcInputStream * inputStream )

Gets the current position in an input stream.

KANZI_API enum KzcIOStreamEndianness kzcInputStreamGetEndianness ( const struct KzcInputStream * inputStream )

Gets endianness of input stream.

KANZI_API void kzcInputStreamSetEndianness	(	struct KzcInputStream *	inputStream,
		enum KzcIOStreamEndianness	endianness
	)

Sets endianness for input stream.

KANZI_API kzsException kzcInputStreamReadBytes	(	struct KzcInputStream *	inputStream,
		kzUint	byteCount,
		kanzi::byte *	out_bytes
	)

Reads given amount of bytes from the input stream.

An error is returned if the input stream has an error, or end of stream is reached too soon.

KANZI_API kzsException kzcInputStreamReadBoolean	(	struct KzcInputStream *	inputStream,
		kzBool *	out_value
	)

Reads a boolean from an input stream.

KANZI_API kzsException kzcInputStreamReadBoolean	(	struct KzcInputStream *	inputStream,
		bool *	out_value
	)

KANZI_API kzsException kzcInputStreamReadU8	(	struct KzcInputStream *	inputStream,
		kzU8 *	out_value
	)

Reads an unsigned 8-bit value from an input stream.

KANZI_API kzsException kzcInputStreamReadU8Int	(	struct KzcInputStream *	inputStream,
		kzUint *	out_value
	)

Reads an unsigned 8-bit value casted to an unsigned integer from an input stream.

KANZI_API kzsException kzcInputStreamReadS8	(	struct KzcInputStream *	inputStream,
		kzS8 *	out_value
	)

Reads a signed 8-bit value from an input stream.

KANZI_API kzsException kzcInputStreamReadS8Int	(	struct KzcInputStream *	inputStream,
		kzInt *	out_value
	)

Reads a signed 8-bit value casted to a signed integer from an input stream.

KANZI_API kzsException kzcInputStreamReadU16	(	struct KzcInputStream *	inputStream,
		kzU16 *	out_value
	)

Reads an unsigned 16-bit value from an input stream.

KANZI_API kzsException kzcInputStreamReadU16Array	(	struct KzcInputStream *	inputStream,
		kzUint	valueCount,
		kzU16 *	values
	)

Reads an array of 16-bit values form an input stream.

KANZI_API kzsException kzcInputStreamReadU16Int	(	struct KzcInputStream *	inputStream,
		kzUint *	out_value
	)

Reads an unsigned 16-bit value casted to an unsigned integer from an input stream.

KANZI_API kzsException kzcInputStreamReadS16	(	struct KzcInputStream *	inputStream,
		kzS16 *	out_value
	)

Reads a signed 16-bit value from an input stream.

KANZI_API kzsException kzcInputStreamReadS16Array	(	struct KzcInputStream *	inputStream,
		kzUint	valueCount,
		kzS16 *	values
	)

Reads an array of signed 16-bit values form an input stream.

KANZI_API kzsException kzcInputStreamReadS16Int	(	struct KzcInputStream *	inputStream,
		kzInt *	out_value
	)

Reads a signed 16-bit value casted to a signed integer from an input stream.

KANZI_API kzsException kzcInputStreamReadU32	(	struct KzcInputStream *	inputStream,
		kzU32 *	out_value
	)

Reads an unsigned 32-bit value from an input stream.

KANZI_API kzsException kzcInputStreamReadU32Array	(	struct KzcInputStream *	inputStream,
		kzUint	valueCount,
		kzU32 *	values
	)

Reads an array of unsigned 32-bit values from an input stream.

KANZI_API kzsException kzcInputStreamReadU32Int	(	struct KzcInputStream *	inputStream,
		kzUint *	out_value
	)

Reads an unsigned 32-bit value casted to an unsigned integer from an input stream.

KANZI_API kzsException kzcInputStreamReadS32	(	struct KzcInputStream *	inputStream,
		kzS32 *	out_value
	)

Reads a signed 32-bit value from an input stream.

KANZI_API kzsException kzcInputStreamReadS32Array	(	struct KzcInputStream *	inputStream,
		kzUint	valueCount,
		kzS32 *	values
	)

Reads an array of signed 32-bit values from an input stream.

KANZI_API kzsException kzcInputStreamReadS32Int	(	struct KzcInputStream *	inputStream,
		kzInt *	out_value
	)

Reads a signed 32-bit value casted to a signed integer from an input stream.

KANZI_API kzsException kzcInputStreamReadFloat	(	struct KzcInputStream *	inputStream,
		kzFloat *	out_value
	)

Reads a 32-bit floating point value from an input stream.

KANZI_API kzsException kzcInputStreamReadFloatArray	(	struct KzcInputStream *	inputStream,
		kzUint	valueCount,
		kzFloat *	values
	)

Reads a float array from an input stream.

KANZI_API kzsException kzcInputStreamReadDouble	(	struct KzcInputStream *	inputStream,
		kzDouble *	out_value
	)

Reads a 64-bit floating point value from an input stream.

KANZI_API kzsException kzcInputStreamReadAllBytes	(	struct KzcInputStream *	inputStream,
		const struct KzcMemoryManager *	memoryManager,
		kzUint *	out_size,
		kanzi::byte **	out_data
	)

Reads the rest of the input stream to an array of bytes.

The caller must free the returned data using kzcMemoryFreePointer().

KANZI_API kzsException kzcInputStreamReadText	(	struct KzcInputStream *	inputStream,
		const struct KzcMemoryManager *	memoryManager,
		kzMutableString *	out_string
	)

Reads the rest of the input stream to a string.

The caller must free the returned string using kzcStringDelete().

KANZI_API kzsException kzcInputStreamReadTextLines	(	struct KzcInputStream *	inputStream,
		const struct KzcMemoryManager *	memoryManager,
		kzMutableString **	out_lines
	)

Reads the rest of the input stream to an array of strings.

Each item in the array is a line of text from the input stream. Newline and carriage return characters are discarded from the text. The caller must free the returned lines using kzcStringDelete() and the string array using kzcMemoryFreeArray().

Macros

Typedefs

Functions

Detailed Description

Macro Definition Documentation

Typedef Documentation

Function Documentation