C++ (Cpp) GuOutStreamの例

コード例 #1

ファイル: out.c プロジェクト: Deseaus/GF

static bool
gu_out_begin_buf(GuOut* out, size_t req, GuExn* err)
{
	GuOutStream* stream = out->stream;
	if (gu_out_is_buffering(out)) {
		if (out->buf_curr < 0) {
			return true;
		} else {
			gu_out_end_buf(out, err);
			if (!gu_ok(err)) {
				return false;
			}
		}
	}
	if (stream->begin_buf) {
		size_t sz = 0;
		uint8_t* buf = stream->begin_buf(stream, req, &sz, err);
		gu_assert(sz <= PTRDIFF_MAX);
		if (buf) {
			out->buf_end = &buf[sz];
			out->buf_curr = -(ptrdiff_t) sz;
			out->buf_size = sz;
			return true;
		}
	}
	return false;
}

コード例 #2

ファイル: out.c プロジェクト: McMbuvi/GF

GuOut
gu_init_out(GuOutStream* stream)
{
	gu_require(stream != NULL);
	GuOut out = {
		.buf_end = NULL,
		.buf_curr = 0,
		.stream = stream,
		.fini.fn = NULL
	};
	return out;
}

static bool
gu_out_is_buffering(GuOut* out)
{
	return !!out->buf_end;
}


static void
gu_out_end_buf(GuOut* out, GuExn* err)
{
	if (!gu_out_is_buffering(out)) {
		return;
	}
	GuOutStream* stream = out->stream;
	size_t curr_len = ((ptrdiff_t)out->buf_size) + out->buf_curr;
	stream->end_buf(stream, curr_len, err);
	out->buf_end = NULL;
	out->buf_size = out->buf_curr = 0;
}

static bool
gu_out_begin_buf(GuOut* out, size_t req, GuExn* err)
{
	GuOutStream* stream = out->stream;
	if (gu_out_is_buffering(out)) {
		if (out->buf_curr < 0) {
			return true;
		} else {
			gu_out_end_buf(out, err);
			if (!gu_ok(err)) {
				return false;
			}
		}
	}
	if (stream->begin_buf) {
		size_t sz = 0;
		uint8_t* buf = stream->begin_buf(stream, req, &sz, err);
		gu_assert(sz <= PTRDIFF_MAX);
		if (buf) {
			out->buf_end = &buf[sz];
			out->buf_curr = -(ptrdiff_t) sz;
			out->buf_size = sz;
			return true;
		}
	}
	return false;
}

コード例 #3

ファイル: out.c プロジェクト: Deseaus/GF

static void
gu_out_end_buf(GuOut* out, GuExn* err)
{
	if (!gu_out_is_buffering(out)) {
		return;
	}
	GuOutStream* stream = out->stream;
	size_t curr_len = ((ptrdiff_t)out->buf_size) + out->buf_curr;
	stream->end_buf(stream, curr_len, err);
	out->buf_end = NULL;
	out->buf_size = out->buf_curr = 0;
}

コード例 #4

ファイル: out.c プロジェクト: Deseaus/GF

void 
gu_out_flush(GuOut* out, GuExn* err)
{
	GuOutStream* stream = out->stream;
	if (out->buf_end) {
		gu_out_end_buf(out, err);
		if (!gu_ok(err)) {
			return;
		}
	}
	if (stream->flush) {
		stream->flush(stream, err);
	}
}