wsstream.c File Reference

#include "wsint.h"

Go to the source code of this file.

Functions
WsBool	ws_stream_getc (WsStream *stream, WsUInt32 *ch_return)
void	ws_stream_ungetc (WsStream *stream, WsUInt32 ch)
WsBool	ws_stream_flush (WsStream *stream)
void	ws_stream_close (WsStream *stream)
WsStream *	ws_stream_new (void *context, WsStreamIOProc io, WsStreamFlushProc flush, WsStreamCloseProc close)

Function Documentation

ws_stream_close()

void ws_stream_close

(

WsStream *

stream

)

Definition at line 117 of file wsstream.c.

References WsStreamRec::close, WsStreamRec::context, and ws_free().

Referenced by ws_compile_data(), and ws_compile_file().

{
    if (stream->close)
        (*stream->close)(stream->context);

    ws_free(stream);
}

ws_stream_flush()

WsBool ws_stream_flush

(

WsStream *

stream

)

Definition at line 108 of file wsstream.c.

References WsStreamRec::context, WsStreamRec::flush, and WS_TRUE.

{
    if (stream->flush)
        return (*stream->flush)(stream->context);

    return WS_TRUE;
}

ws_stream_getc()

WsBool ws_stream_getc	(	WsStream *	stream,
		WsUInt32 *	ch_return
	)

Definition at line 74 of file wsstream.c.

References WsStreamRec::buffer, WsStreamRec::buffer_pos, WsStreamRec::context, WsStreamRec::data_in_buffer, WsStreamRec::io, WsStreamRec::ungetch, WsStreamRec::ungetch_valid, WS_FALSE, WS_STREAM_BUFFER_SIZE, and WS_TRUE.

Referenced by read_float_from_exp(), read_float_from_point(), and ws_yy_lex().

{
    if (stream->ungetch_valid) {
        *ch_return = stream->ungetch;
        stream->ungetch_valid = WS_FALSE;

        return WS_TRUE;
    }

    if (stream->buffer_pos >= stream->data_in_buffer) {
        /* Read more data to the buffer. */
        stream->buffer_pos = 0;
        stream->data_in_buffer = (*stream->io)(stream->context,
                                               stream->buffer,
                                               WS_STREAM_BUFFER_SIZE);
        if (stream->data_in_buffer == 0)
            /* EOF reached. */
            return WS_FALSE;
    }

    /* Return the next character. */
    *ch_return = stream->buffer[stream->buffer_pos++];

    return WS_TRUE;
}

ws_stream_new()

WsStream* ws_stream_new	(	void *	context,
		WsStreamIOProc	io,
		WsStreamFlushProc	flush,
		WsStreamCloseProc	close
	)

Definition at line 126 of file wsstream.c.

References WsStreamRec::close, WsStreamRec::context, WsStreamRec::flush, WsStreamRec::io, and ws_calloc().

Referenced by ws_stream_new_data_input(), and ws_stream_new_file().

{
    WsStream *stream = ws_calloc(1, sizeof(*stream));

    if (stream == NULL)
        return NULL;

    stream->io = io;
    stream->flush = flush;
    stream->close = close;
    stream->context = context;

    return stream;
}

ws_stream_ungetc()

void ws_stream_ungetc	(	WsStream *	stream,
		WsUInt32	ch
	)

Definition at line 101 of file wsstream.c.

References WsStreamRec::ungetch, WsStreamRec::ungetch_valid, and WS_TRUE.

Referenced by read_float_from_exp(), read_float_from_point(), and ws_yy_lex().

{
    stream->ungetch = ch;
    stream->ungetch_valid = WS_TRUE;
}