2013-01-11 01:48:46 +08:00
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#ifndef FOUG_C_STREAM_H
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#define FOUG_C_STREAM_H
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2013-01-16 00:56:24 +08:00
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#include "global.h"
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#include <stdio.h>
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2013-01-11 01:48:46 +08:00
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2014-03-13 22:57:04 +08:00
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FOUG_C_LINKAGE_BEGIN
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2014-02-13 18:18:46 +08:00
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/*! Stream that can get input from an arbitrary data source or can write output to an arbitrary
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2014-02-13 23:25:37 +08:00
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* data sink
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*/
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struct foug_stream
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{
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/*! Opaque pointer on the user stream, passed as first argument to hook functions */
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void* cookie;
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2014-01-21 17:51:23 +08:00
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/*! Pointer on a function that checks end-of-stream indicator */
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foug_bool_t (*at_end_func)(void* cookie);
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/*! Pointer on a function that checks error indicator */
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int (*error_func)(void* cookie);
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/*! Pointer on a function that reads block of data from stream */
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size_t (*read_func)(void* cookie, void* ptr, size_t size, size_t count);
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/*! Pointer on a function that writes block of data to stream */
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size_t (*write_func)(void* cookie, const void* ptr, size_t size, size_t count);
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};
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typedef struct foug_stream foug_stream_t;
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2013-03-27 20:00:48 +08:00
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/* Initialization */
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/*! Installs a null stream */
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FOUG_LIB_EXPORT void foug_stream_set_null(foug_stream_t* stream);
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/*! Configures \p stream for standard FILE* (cookie will hold \p file) */
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FOUG_LIB_EXPORT void foug_stream_set_stdio(foug_stream_t* stream, FILE* file);
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/* Services */
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2013-02-21 21:51:29 +08:00
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2014-02-13 23:25:37 +08:00
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/*! Safe and convenient function for foug_stream::at_end_func() */
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FOUG_LIB_EXPORT foug_bool_t foug_stream_at_end(foug_stream_t* stream);
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/*! Safe and convenient function for foug_stream::error_func() */
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FOUG_LIB_EXPORT int foug_stream_error(foug_stream_t* stream);
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/*! Safe and convenient function for foug_stream::read_func() */
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FOUG_LIB_EXPORT size_t foug_stream_read(foug_stream_t* stream,
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void* ptr,
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size_t size,
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size_t count);
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/*! Safe and convenient function for foug_stream::write_func() */
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FOUG_LIB_EXPORT size_t foug_stream_write(foug_stream_t* stream,
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const void* ptr,
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size_t size,
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size_t count);
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2014-03-13 22:57:04 +08:00
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FOUG_C_LINKAGE_END
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2013-01-11 01:48:46 +08:00
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#endif /* FOUG_C_STREAM_H */
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