buffer.h

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#ifndef __W_BUFFER_H__
#define __W_BUFFER_H__
 
#include <inttypes.h>
#include <stddef.h>
#include "ws_symbol_export.h"
 
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
 
#define SOME_FUNCTIONS_ARE_DEFINES
 
typedef struct Buffer {
    uint8_t *data;
    size_t  allocated;
    size_t  start;
    size_t  first_free;
} Buffer;
 
WS_DLL_PUBLIC
void ws_buffer_init(Buffer* buffer, size_t space);
WS_DLL_PUBLIC
void ws_buffer_free(Buffer* buffer);
WS_DLL_PUBLIC
void ws_buffer_assure_space(Buffer* buffer, size_t space);
WS_DLL_PUBLIC
void ws_buffer_append(Buffer* buffer, uint8_t *from, size_t bytes);
WS_DLL_PUBLIC
void ws_buffer_remove_start(Buffer* buffer, size_t bytes);
WS_DLL_PUBLIC
void ws_buffer_cleanup(void);
 
#ifdef SOME_FUNCTIONS_ARE_DEFINES
# define ws_buffer_clean(buffer) ws_buffer_remove_start((buffer), ws_buffer_length(buffer))
# define ws_buffer_increase_length(buffer,bytes) (buffer)->first_free += (bytes)
# define ws_buffer_length(buffer) ((buffer)->first_free - (buffer)->start)
# define ws_buffer_start_ptr(buffer) ((buffer)->data + (buffer)->start)
# define ws_buffer_end_ptr(buffer) ((buffer)->data + (buffer)->first_free)
# define ws_buffer_append_buffer(buffer,src_buffer) ws_buffer_append((buffer), ws_buffer_start_ptr(src_buffer), ws_buffer_length(src_buffer))
#else
 WS_DLL_PUBLIC
 void ws_buffer_clean(Buffer* buffer);
 WS_DLL_PUBLIC
 void ws_buffer_increase_length(Buffer* buffer, size_t bytes);
 WS_DLL_PUBLIC
 size_t ws_buffer_length(Buffer* buffer);
 WS_DLL_PUBLIC
 uint8_t* ws_buffer_start_ptr(Buffer* buffer);
 WS_DLL_PUBLIC
 uint8_t* ws_buffer_end_ptr(Buffer* buffer);
 WS_DLL_PUBLIC
 void ws_buffer_append_buffer(Buffer* buffer, Buffer* src_buffer);
#endif
 
#ifdef __cplusplus
}
#endif /* __cplusplus */
 
#endif