lang/c/msgpack: added C++ binding

git-svn-id: file:///Users/frsyuki/project/msgpack-git/svn/x@50 5a5092ae-2292-43ba-b2d5-dcab9c1a2731

1 files changed, 96 insertions, 0 deletions

diff --git a/cpp/unpack.cpp b/cpp/unpack.cpp
new file mode 100644
index 0000000..0f02d3c
--- /dev/null
+++ b/cpp/unpack.cpp
@@ -0,0 +1,96 @@
+#include "msgpack/unpack.hpp"
+#include "unpack_context.hpp"
+#include <stdlib.h>
+
+namespace msgpack {
+
+struct unpacker::context {
+	context(zone& z)
+	{
+		msgpack_unpacker_init(&m_ctx);
+		m_ctx.user = &z;
+	}
+
+	~context() { }
+
+	int execute(const void* data, size_t len, size_t* off)
+	{
+		return msgpack_unpacker_execute(&m_ctx, (const char*)data, len, off);
+	}
+
+	object_class* data()
+	{
+		return msgpack_unpacker_data(&m_ctx);
+	}
+
+	void reset()
+	{
+		zone* z = m_ctx.user;
+		msgpack_unpacker_init(&m_ctx);
+		m_ctx.user = z;
+	}
+
+private:
+	msgpack_unpacker m_ctx;
+
+private:
+	context();
+	context(const context&);
+};
+
+
+unpacker::unpacker(zone& z) :
+	m_ctx(new context(z)),
+	m_zone(z),
+	m_finished(false)
+{ }
+
+
+unpacker::~unpacker() { delete m_ctx; }
+
+
+size_t unpacker::execute(const void* data, size_t len, size_t off)
+{
+	int ret = m_ctx->execute(data, len, &off);
+	if(ret < 0) {
+		throw unpack_error("parse error");
+	} else if(ret > 0) {
+		m_finished = true;
+		return off;
+	} else {
+		m_finished = false;
+		return off;
+	}
+}
+
+
+object unpacker::data()
+{
+	return object(m_ctx->data());
+}
+
+
+void unpacker::reset()
+{
+	m_ctx->reset();
+}
+
+
+object unpacker::unpack(const void* data, size_t len, zone& z)
+{
+	context ctx(z);
+	size_t off = 0;
+	int ret = ctx.execute(data, len, &off);
+	if(ret < 0) {
+		throw unpack_error("parse error");
+	} else if(ret == 0) {
+		throw unpack_error("insufficient bytes");
+	} else if(off < len) {
+		throw unpack_error("extra bytes");
+	}
+	return ctx.data();
+}
+
+
+}  // namespace msgpack
+