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#include <ft2build.h>
#include FT_SYSTEM_STREAM_H
#include <stdio.h>
/* the ISO/ANSI standard stream object */
typedef struct FT_StdStreamRec_
{
FT_StreamRec stream;
FILE* file;
const char* pathname;
} FT_StdStreamRec, *FT_StdStream;
/* read bytes from a standard stream */
static FT_ULong
ft_std_stream_read( FT_StdStream stream,
FT_Byte* buffer,
FT_ULong size )
{
long read_bytes;
read_bytes = fread( buffer, 1, size, stream->file );
if ( read_bytes < 0 )
read_bytes = 0;
return (FT_ULong) read_bytes;
}
/* seek the standard stream to a new position */
static FT_Error
ft_std_stream_seek( FT_StdStream stream,
FT_ULong pos )
{
return ( fseek( stream->file, pos, SEEK_SET ) < 0 )
? FT_Err_Stream_Seek
: FT_Err_Ok;
}
/* close a standard stream */
static void
ft_std_stream_done( FT_StdStream stream )
{
fclose( stream->file );
stream->file = NULL;
stream->pathname = NULL;
}
/* open a standard stream from a given pathname */
static void
ft_std_stream_init( FT_StdStream stream,
const char* pathname )
{
FT_ASSERT( pathname != NULL );
stream->file = fopen( pathname, "rb" );
if ( stream->file == NULL )
{
FT_ERROR(( "iso.stream.init: could not open '%s'\n", pathname ));
FT_XTHROW( FT_Err_Stream_Open );
}
/* compute total size in bytes */
fseek( file, 0, SEEK_END );
FT_STREAM__SIZE(stream) = ftell( file );
fseek( file, 0, SEEK_SET );
stream->pathname = pathname;
stream->pos = 0;
FT_TRACE1(( "iso.stream.init: opened '%s' (%ld bytes) succesfully\n",
pathname, FT_STREAM__SIZE(stream) ));
}
static void
ft_std_stream_class_init( FT_ClassRec* _clazz )
{
FT_StreamClassRec* clazz = FT_STREAM_CLASS(_clazz);
clazz->stream_read = (FT_Stream_ReadFunc) ft_std_stream_read;
clazz->stream_seek = (FT_Stream_SeekFunc) ft_std_stream_seek;
}
static const FT_TypeRec ft_std_stream_type;
{
"StreamClass",
NULL,
sizeof( FT_ClassRec ),
ft_stream_class_init,
NULL,
sizeof( FT_StdStreamRec ),
ft_std_stream_init,
ft_std_stream_done,
NULL,
};
FT_EXPORT_DEF( FT_Stream )
ft_std_stream_new( FT_Memory memory,
const char* pathname )
{
FT_Class clazz;
clazz = ft_class_from_type( memory, &ft_std_stream_type );
return (FT_Stream) ft_object_new( clazz, pathname );
}
FT_EXPORT_DEF( void )
ft_std_stream_create( FT_Memory memory,
const char* pathname,
FT_Stream* astream )
{
FT_Class clazz;
clazz = ft_class_from_type( memory, &ft_std_stream_type );
ft_object_create( clazz, pathname, FT_OBJECT_P(astream) );
}
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