import ubjson

2 files changed, 394 insertions, 0 deletions

diff --git a/include/lib/ubjson/ubj.h b/include/lib/ubjson/ubj.h
new file mode 100644
index 0000000..f3d5ac8
--- /dev/null
+++ b/include/lib/ubjson/ubj.h
@@ -0,0 +1,231 @@
+#ifndef UBJ_H

+#define UBJ_H

+

+#ifdef __cplusplus

+extern "C" {

+#endif

+

+#include<inttypes.h>

+#include<stdio.h>

+

+typedef enum

+{

+	UBJ_MIXED=0,			//NOT a type...or the type is mixed

+

+	UBJ_NULLTYPE,

+	UBJ_NOOP,

+	UBJ_BOOL_TRUE,

+	UBJ_BOOL_FALSE,

+	

+	UBJ_CHAR,

+	UBJ_STRING,

+	UBJ_HIGH_PRECISION,

+

+	UBJ_INT8,

+	UBJ_UINT8 ,

+	UBJ_INT16,

+	UBJ_INT32,

+	UBJ_INT64,

+	UBJ_FLOAT32 ,

+	UBJ_FLOAT64,

+

+	UBJ_ARRAY,

+	UBJ_OBJECT,

+

+	UBJ_NUM_TYPES				//this is the size of how many types there are (chris' trick)

+} UBJ_TYPE;

+

+

+

+//////////here is the declarations for the writer API////////////////////////////////////

+

+

+

+/////////////////////////////////////////////////////////////////////////////////////////

+

+struct ubjw_context_t_s;

+typedef struct ubjw_context_t_s ubjw_context_t;

+

+ubjw_context_t* ubjw_open_callback(void* userdata,

+	size_t(*write_cb)(const void* data, size_t size, size_t count, void* userdata),

+	int(*close_cb)(void* userdata),

+	void(*error_cb)(const char* error_msg)

+	);

+ubjw_context_t* ubjw_open_file(FILE*);

+ubjw_context_t* ubjw_open_memory(uint8_t* dst_b, uint8_t* dst_e);

+

+size_t ubjw_close_context(ubjw_context_t* ctx);

+

+void ubjw_write_string(ubjw_context_t* dst, const char* out);

+void ubjw_write_char(ubjw_context_t* dst, char out);

+

+void ubjw_write_uint8(ubjw_context_t* dst, uint8_t out);

+void ubjw_write_int8(ubjw_context_t* dst, int8_t out);

+void ubjw_write_int16(ubjw_context_t* dst, int16_t out);

+void ubjw_write_int32(ubjw_context_t* dst, int32_t out);

+void ubjw_write_int64(ubjw_context_t* dst, int64_t out);

+void ubjw_write_high_precision(ubjw_context_t* dst, const char* hp);

+

+void ubjw_write_integer(ubjw_context_t* dst, int64_t out);

+UBJ_TYPE ubjw_min_integer_type(int64_t in);

+

+void ubjw_write_float32(ubjw_context_t* dst, float out);

+void ubjw_write_float64(ubjw_context_t* dst, double out);

+

+void ubjw_write_floating_point(ubjw_context_t* dst, double out);

+

+void ubjw_write_noop(ubjw_context_t* dst);

+void ubjw_write_null(ubjw_context_t* dst);

+void ubjw_write_bool(ubjw_context_t* dst, uint8_t out);

+

+void ubjw_begin_array(ubjw_context_t* dst, UBJ_TYPE type, size_t count);

+

+void ubjw_begin_object(ubjw_context_t* dst, UBJ_TYPE type, size_t count);

+void ubjw_write_key(ubjw_context_t* dst, const char* key);

+void ubjw_end(ubjw_context_t* dst);

+

+//output an efficient buffer of types

+void ubjw_write_buffer(ubjw_context_t* dst, const uint8_t* data, UBJ_TYPE type, size_t count);

+

+//Proposal for N-D arrays

+void ubjw_begin_ndarray(ubjw_context_t* dst, UBJ_TYPE type, const size_t* dims, uint8_t ndims);

+void ubjw_write_ndbuffer(ubjw_context_t* dst,const uint8_t* data, UBJ_TYPE type, const size_t* dims, uint8_t ndims);

+

+

+//////////here is the declarations for the reader API////////////////////////////////////

+

+

+

+/////////////////////////////////////////////////////////////////////////////////////////

+

+struct ubjr_context_t_s;

+typedef struct ubjr_context_t_s ubjr_context_t;

+

+//Open up a reader context for reading using a custom calllback

+ubjr_context_t* ubjr_open_callback(void* userdata,

+	size_t(*read_cb)(void* data, size_t size, size_t count, void* userdata),

+	int(*peek_cb)(void* userdata),

+	int(*close_cb)(void* userdata),

+	void(*error_cb)(const char* error_msg)

+	);

+

+//Open a context initialized to a UBJ file

+ubjr_context_t* ubjr_open_file(FILE*);

+

+//Open up a context initialized to a memory dump of a UBJ file (or a segment of a UBJ file)

+ubjr_context_t* ubjr_open_memory(const uint8_t* dst_b, const uint8_t* dst_e);

+

+//Close a reader context 

+size_t ubjr_close_context(ubjr_context_t* ctx);

+

+typedef char* ubjr_string_t;

+

+//An array that you read from the stream

+typedef struct ubjr_array_t_s

+{

+	uint8_t originally_sized;

+	UBJ_TYPE type;	

+	size_t size;	//total number of elements

+	void* values;

+	uint8_t num_dims;

+	size_t* dims;	//this could be faster if it was constant size, but would also make the size of the dynamic object a LOT bigger

+

+} ubjr_array_t;

+

+//a map that you read from the stream

+typedef struct ubjr_object_t_s

+{

+	uint8_t originally_sized;

+	UBJ_TYPE type;

+	size_t size;

+	void* values;

+	ubjr_string_t* keys;

+	void* metatable;		//don't use this..only useful for computing object_lookup

+} ubjr_object_t;

+

+//a dynamic type that you parsed.

+typedef struct ubjr_dynamic_t_s

+{

+	UBJ_TYPE type;

+	union

+	{

+		uint8_t boolean;

+		double real;

+		int64_t integer;

+		ubjr_string_t string;

+		ubjr_array_t container_array;

+		ubjr_object_t container_object;

+	};

+} ubjr_dynamic_t;

+

+//Parse a dynamic object from the stream

+ubjr_dynamic_t ubjr_read_dynamic(ubjr_context_t* ctx);

+void ubjr_cleanup_dynamic(ubjr_dynamic_t* dyn);

+

+ubjr_dynamic_t ubjr_object_lookup(ubjr_object_t* obj, const char* key);

+size_t ubjr_local_type_size(UBJ_TYPE typ);//should be equivalent to sizeof()

+size_t ubjr_ndarray_index(const ubjr_array_t* arr, const size_t* indices);

+

+

+//output an efficient buffer of types

+///void ubjr_read_buffer(struct ubjr_context_t* dst, const uint8_t* data, UBJ_TYPE type, size_t count);

+

+void ubjr_cleanup_dynamic(ubjr_dynamic_t* dyn);

+void ubjr_cleanup_array(ubjr_array_t* arr);

+void ubjr_cleanup_object(ubjr_object_t* obj);

+

+

+

+///////UBJ_RW api

+

+void ubjrw_write_dynamic(ubjw_context_t* ctx, ubjr_dynamic_t dobj,uint8_t optimize);

+//ubjrw_append_object(ubjw_context_t* ctx, ubjr_dynamic_t dobj);

+//ubjrw_append_array(ubjw_context_t* ctx, ubjr_dynamic_t dobj);

+

+#ifdef __cplusplus

+}

+

+/*

+#include<iostream>

+

+static size_t write_os(const void* data, size_t size, size_t count, void* userdata)

+{

+	size_t n = size*count;

+	reinterpret_cast<std::ostream*>(userdata)->write(data, n);

+	return n;

+}

+static void close_os(void* userdata)

+{

+	reinterpret_cast<std::ostream*>(userdata)->close();

+}

+

+static size_t read_is(void* data, size_t size, size_t count, void* userdata)

+{

+	size_t n = size*count;

+	reinterpret_cast<std::istream*>(userdata)->read(data, n);

+	return n;

+}

+static int peek_is(void* userdata)

+{

+	return reinterpret_cast<std::istream*>(userdata)->peek();

+}

+static void close_is(void* userdata)

+{

+	reinterpret_cast<std::istream*>(userdata)->close();

+}

+

+static ubjw_context_t* ubjw_open_stream(std::ostream& outstream)

+{

+	return ubjw_open_callback((void*)&outstream, write_os, close_os, NULL);

+}

+

+static ubjr_context_t* ubjr_open_stream(std::istream& instream)

+{

+	return ubjr_open_callback((void*)&instream, read_is, peek_is, close_is, NULL);

+}

+*/

+

+

+#endif

+

+#endif

diff --git a/include/lib/ubjson/ubj_internal.h b/include/lib/ubjson/ubj_internal.h
new file mode 100644
index 0000000..fc61697
--- /dev/null
+++ b/include/lib/ubjson/ubj_internal.h
@@ -0,0 +1,163 @@
+#ifndef UBJ_INTERNAL_H

+#define UBJ_INTERNAL_H

+

+#include "ubj.h"

+#include <stdlib.h>

+#include <string.h>

+

+#if _MSC_VER

+#define inline __inline

+#endif

+

+

+static const uint8_t UBJI_TYPEC_convert[UBJ_NUM_TYPES] = "\x00ZNTFCSHiUIlLdD[{";

+

+static const int UBJI_TYPE_size[UBJ_NUM_TYPES] =

+	{ -1,	 //MIXED

+	0,	 //NULLTYPE

+	0,	 //NOOP

+	0,   //BOOL_TRUE

+	0,   //BOOL_FALSE

+	1,   //CHAR

+	sizeof(const char*), //STRING

+	sizeof(const char*), //high-precision

+	1,					//INT8

+	1,					//UINT8

+	2,					//int16

+	4,					//int32

+	8,					//int64

+	4,					//float32

+	8,					//float64

+	-1,					//array

+	-1					//object

+	};

+

+static const size_t UBJR_TYPE_localsize[UBJ_NUM_TYPES] =

+{

+	sizeof(ubjr_dynamic_t),	 //MIXED

+	0,	 //NULLTYPE

+	0,	 //NOOP

+	0,   //BOOL_TRUE

+	0,   //BOOL_FALSE

+	sizeof(ubjr_string_t),   //CHAR

+	sizeof(ubjr_string_t), //STRING

+	sizeof(ubjr_string_t), //high-precision

+	sizeof(int8_t),					//INT8

+	sizeof(uint8_t),					//UINT8

+	sizeof(int16_t),					//int16

+	sizeof(int32_t),					//int32

+	sizeof(int64_t),					//int64

+	sizeof(float),					//float32

+	sizeof(double),					//float64

+	sizeof(ubjr_array_t),					//array

+	sizeof(ubjr_object_t)					//object

+};

+

+static inline void _to_bigendian16(uint8_t* outbuffer, uint16_t input)

+{

+	*outbuffer++ = (input >> 8); // Get top order byte (guaranteed endian-independent since machine registers)

+	*outbuffer++ = input & 0xFF; // Get bottom order byte

+}

+static inline void _to_bigendian32(uint8_t* outbuffer, uint32_t input)

+{

+	_to_bigendian16(outbuffer, (uint16_t)(input >> 16)); // Get top order 2 bytes

+	_to_bigendian16(outbuffer + 2, (uint16_t)(input & 0xFFFF)); // Get bottom order 2 bytes

+}

+static inline void _to_bigendian64(uint8_t* outbuffer, uint64_t input)

+{

+	_to_bigendian32(outbuffer, (uint32_t)(input >> 32));

+	_to_bigendian32(outbuffer + 4, (uint32_t)(input & 0xFFFFFFFF));

+}

+

+static inline uint8_t _is_bigendian()

+{

+	int i = 1;

+	char *low = (char*)&i;

+	return *low ? 0 : 1;

+}

+

+#define BUF_BIG_ENDIAN_SWAP(type,func,ptr,num)  \

+	{											\

+		size_t i;type* d = (type*)ptr; 					\

+		for (i = 0; i < num; i++)				\

+		{										\

+			func((uint8_t*)&d[i], d[i]);		\

+		}										\

+	}											\

+

+static inline void buf_endian_swap(uint8_t* buf, size_t sz, size_t n)

+{

+	if (!_is_bigendian())

+	{

+		switch (sz)

+		{

+		case 1:

+		case 0:

+			break;

+		case 2:

+			BUF_BIG_ENDIAN_SWAP(uint16_t, _to_bigendian16,buf,n);

+			break;

+		case 4:

+			BUF_BIG_ENDIAN_SWAP(uint32_t, _to_bigendian32,buf,n);

+			break;

+		case 8:

+			BUF_BIG_ENDIAN_SWAP(uint64_t, _to_bigendian64,buf,n);

+			break;

+		};

+	}

+}

+

+//warning...null-terminated strings are assumed...when this is not necessarily valid. FIXED: we don't use null-terminated strings in the reader (NOT FIXED...string type is awkward)

+static inline ubjr_dynamic_t priv_ubjr_pointer_to_dynamic(UBJ_TYPE typ, const void* dat)

+{

+	ubjr_dynamic_t outdyn;

+	outdyn.type = typ;

+	size_t n = 1;

+	switch (typ)

+	{

+	case UBJ_NULLTYPE:

+	case UBJ_NOOP:

+		break;

+	case UBJ_BOOL_TRUE:

+	case UBJ_BOOL_FALSE:

+		outdyn.boolean = (typ == UBJ_BOOL_TRUE ? 1 : 0);

+		break;

+	case UBJ_HIGH_PRECISION:

+	case UBJ_STRING:

+	case UBJ_CHAR://possibly if char allocate, otherwise don't

+		outdyn.string = *(const ubjr_string_t*)dat;

+		break;

+	case UBJ_INT8:

+		outdyn.integer = *(const int8_t*)dat;

+		break;

+	case UBJ_UINT8:

+		outdyn.integer = *(const uint8_t*)dat;

+		break;

+	case UBJ_INT16:

+		outdyn.integer = *(const int16_t*)dat;

+		break;

+	case UBJ_INT32:

+		outdyn.integer = *(const int32_t*)dat;

+		break;

+	case UBJ_INT64:

+		outdyn.integer = *(const int64_t*)dat;

+		break;

+	case UBJ_FLOAT32:

+		outdyn.real = *(const float*)dat;

+		break;

+	case UBJ_FLOAT64:

+		outdyn.real = *(const double*)dat;

+		break;

+	case UBJ_ARRAY:

+		outdyn.container_array = *(const ubjr_array_t*)dat;

+		break;

+	case UBJ_OBJECT:

+		outdyn.container_object = *(const ubjr_object_t*)dat;

+		break;

+	case UBJ_MIXED:

+		outdyn = *(const ubjr_dynamic_t*)dat;

+	};

+	return outdyn;

+}

+

+#endif
\ No newline at end of file