Add a 16-bit XDR variant

1 files changed, 99 insertions, 0 deletions

diff --git a/src/os/object/xdr16input.cc b/src/os/object/xdr16input.cc
new file mode 100644
index 0000000..407f6ea
--- /dev/null
+++ b/src/os/object/xdr16input.cc
@@ -0,0 +1,99 @@
+#include "object/xdr16input.h"
+
+uint16_t XDRInput::get_uint16()
+{
+	uint32_t ret = ((uint8_t)data[pos]<<8) | (uint8_t)data[pos+1];
+	pos += 2;
+	return ret;
+}
+
+int16_t XDRInput::get_int16()
+{
+	int32_t ret = (data[pos]<<8) | data[pos+1];
+	pos += 2;
+	return ret;
+}
+
+uint32_t XDRInput::get_uint32()
+{
+	uint32_t ret = ((uint8_t)data[pos]<<24) | ((uint8_t)data[pos+1]<<16)
+		| ((uint8_t)data[pos+2]<<8) | (uint8_t)data[pos+3];
+	pos += 4;
+	return ret;
+}
+
+int32_t XDRInput::get_int32()
+{
+	int32_t ret = (data[pos]<<24) | (data[pos+1]<<16) | (data[pos+2]<<8) | data[pos+3];
+	pos += 4;
+	return ret;
+}
+
+uint64_t XDRInput::get_uint64()
+{
+	uint64_t ret0 = ((uint8_t)data[pos]<<24) | ((uint8_t)data[pos+1]<<16)
+		| ((uint8_t)data[pos+2]<<8) | (uint8_t)data[pos+3];
+	pos += 4;
+	uint64_t ret1 = ((uint8_t)data[pos]<<24) | ((uint8_t)data[pos+1]<<16)
+		| ((uint8_t)data[pos+2]<<8) | (uint8_t)data[pos+3];
+	pos += 4;
+	return (ret0 << 32) | ret1;
+}
+
+int64_t XDRInput::get_int64()
+{
+	int64_t ret0 = (data[pos]<<24) | (data[pos+1]<<16) | (data[pos+2]<<8) | data[pos+3];
+	pos += 4;
+	int64_t ret1 = (data[pos]<<24) | (data[pos+1]<<16) | (data[pos+2]<<8) | data[pos+3];
+	pos += 4;
+	return (ret0 << 32) | ret1;
+}
+
+float XDRInput::get_float()
+{
+	union {
+		uint32_t i;
+		float f;
+	} v;
+	v.i = get_uint32();
+	return v.f;
+}
+
+double XDRInput::get_double()
+{
+	union {
+		uint64_t i;
+		double d;
+	} v;
+	v.i = get_uint64();
+	return v.d;
+}
+
+uint16_t XDRInput::get_opaque_length()
+{
+	return get_uint16();
+}
+
+char *XDRInput::get_opaque(uint16_t length)
+{
+	char *ret = data + pos;
+	pos += length;
+	if (length % 2) {
+		pos += 2 - (length % 2);
+	}
+	return ret;
+}
+
+void XDRInput::get_string(char* target)
+{
+	uint16_t length = get_opaque_length();
+	uint16_t i;
+	for (i = 0; i < length; i++) {
+		target[i] = data[pos + i];
+	}
+	target[i] = 0;
+	pos += length;
+	if (length % 2) {
+		pos += 2 - (length % 2);
+	}
+}