dio.h

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#ifndef DIO_H
#define DIO_H
 
#define DIO_ERROR_NULL_PTR             -1
#define DIO_ERROR_COPY_MISMATCH        -2
#define DIO_ERROR_COULD_NOT_OPEN_FILE  -3
#define DIO_ERROR_INVALID_STREAM       -4
 
#define DIO_STREAM_BUFFER  1
#define DIO_STREAM_FILE    2
 
#ifdef DISABLE_FILESYSTEM
 
#define SEEK_SET 0
#define SEEK_CUR 1
#define SEEK_END 2
 
#define dio_assert_stream( stream )
 
#else
#include <stdio.h>
 
#define dio_assert_stream( stream ) \
   assert( \
      0 <= stream->id && \
      ((DIO_STREAM_BUFFER == stream->type && NULL != stream->buffer.bytes ) || \
      (DIO_STREAM_FILE == stream->type && NULL != stream->buffer.file )) )
#endif /* DISABLE_FILESYSTEM */
 
union DIO_BUFFER {
#ifndef DISABLE_FILESYSTEM
   FILE* file;
#endif /* !DISABLE_FILESYSTEM */
   uint8_t* bytes;
};
 
struct DIO_STREAM {
   int32_t id;
   uint8_t type;
   union DIO_BUFFER buffer;
   int32_t buffer_sz;
   int32_t position;
};
 
#define LIST_ERROR_MAX -100
 
#define dio_list_append( node, list, list_sz, list_max, list_type ) \
   if( (list_sz) + 1 >= (list_max) ) { \
      g_dio_error = LIST_ERROR_MAX; \
   } else { \
      memory_copy_ptr( (MEMORY_PTR)&(list[list_sz]), (MEMORY_PTR)node, \
         sizeof( list_type ) ); \
      (list_sz)++; \
   }
 
#define dio_list_remove( idx, list, list_sz, list_type ) assert( (idx) < (list_sz) ); while( (idx) + 1 < (list_sz) ) { memory_copy_ptr( (MEMORY_PTR)&(list[idx]), (MEMORY_PTR)&(list[idx + 1]), sizeof( list_type ) ); (idx)++; } (list_sz)--;
 /* unilayer_dio_list */
 
int32_t dio_open_stream_file(
   const char* path, const char* mode, struct DIO_STREAM* stream );
int32_t dio_open_stream_buffer( uint8_t*, uint32_t, struct DIO_STREAM* );
void dio_close_stream( struct DIO_STREAM* );
int32_t dio_seek_stream( struct DIO_STREAM*, int32_t, uint8_t );
int32_t dio_tell_stream( struct DIO_STREAM* );
int32_t dio_sz_stream( struct DIO_STREAM* );
int32_t dio_position_stream( struct DIO_STREAM* );
uint8_t dio_type_stream( struct DIO_STREAM* );
int32_t dio_read_stream( MEMORY_PTR, uint32_t, struct DIO_STREAM* );
int32_t dio_write_stream( const MEMORY_PTR, uint32_t, struct DIO_STREAM* );
 
uint32_t dio_reverse_endian_32( uint32_t );
uint16_t dio_reverse_endian_16( uint16_t );
int32_t dio_char_idx( const char*, int32_t, char );
int32_t dio_char_idx_r( const char*, int32_t, char );
int16_t dio_mktemp_path( char*, uint16_t, const char* );
int32_t dio_basename( const char*, uint32_t );
int32_t dio_copy_file( const char*, const char* );
uint32_t dio_read_file( const char*, MEMORY_HANDLE* );
int32_t dio_move_file( const char*, const char* );
int16_t dio_strnchr( const char*, uint16_t, char );
int16_t dio_itoa( char*, uint16_t, int16_t, uint8_t );
int16_t dio_atoi( const char*, uint8_t );
int16_t dio_snprintf( char*, uint16_t, const char*, ... );
 
#ifdef DIO_C
int8_t g_dio_error = 0;
#else
extern int8_t g_dio_error;
#endif /* DIO_C */
 /* unilayer_dio */
 
#endif /* DIO_H */