nachshon.c

#include <stdio.h>;

#define kTocMetaData         (1L<<1) 
#define kTocRawData          (1L<<3) 
#define kTocDAQmxRawData     (1L<<7) 
#define kTocInterleavedData  (1L<<5) 
#define kTocBigEndian        (1L<<6) 
#define kTocNewObjList       (1L<<2)

typedef enum {
	tdsTypeVoid,
	tdsTypeI8,
	tdsTypeI16,
	tdsTypeI32,
	tdsTypeI64,
	tdsTypeU8,
	tdsTypeU16,
	tdsTypeU32,
	tdsTypeU64,
	tdsTypeSingleFloat,
	tdsTypeDoubleFloat,
	tdsTypeExtendedFloat,
	tdsTypeSingleFloatWithUnit = 0x19,
	tdsTypeDoubleFloatWithUnit,
	tdsTypeExtendedFloatWithUnit,
	tdsTypeString = 0x20,
	tdsTypeBoolean = 0x21,
	tdsTypeTimeStamp = 0x44,
	tdsTypeFixedPoint = 0x4F,
	tdsTypeComplexSingleFloat = 0x08000c,
	tdsTypeComplexDoubleFloat = 0x10000d,
	tdsTypeDAQmxRawData = 0xFFFFFFFF
} tdsDataType;

typedef struct
{
	unsigned int path_length;
	tdsDataType data_type;
	char *path;
} metadata_item;

typedef struct {
	unsigned int items_count;
	unsigned int cursor;
	metadata_item *items;
} metadata;

char *filename = "sample.tdms";

char *get_segment(const char *file, unsigned long long  int offset, unsigned long long  int length){
	FILE *ptr = fopen(file, "rb");
	char *result = (char *)malloc(length + 1);
	fseek(ptr, offset, SEEK_SET);
	fread(result, sizeof(char), length, ptr);
	result[length] = 0;
	fclose(ptr);

	return result;
}

void read_metadata(int start){
	char *buf = get_segment(filename, start, 4);
	metadata md;
	struct metadata_item * items = malloc((sizeof(metadata_item)) * (md.items_count = toUint32(buf, 0, 4, 0))); //create array of metadata items
	md.cursor = start + 4;
	md.items = items;
	free(buf);

	for (int i = 0; i < md.items_count; i++){
		//read length of path and then path
		md.items[i].path_length = toUint32(buf = get_segment(filename, (md.cursor += 4) - 4, 4), 0, 4, 0);
		md.items[i].path = get_segment(filename, (md.cursor += md.items[i].path_length) - md.items[i].path_length, md.items[i].path_length);

		unsigned int rawDataIndexLength = toUint32(buf = get_segment(filename, (md.cursor += 4) - 4, 4), 0, 4, 0);

		md.items[i].data_type =(tdsDataType)toUint32(buf = get_segment(filename, (md.cursor += 4) - 4, 4), 0, 4, 0);
	}

}

unsigned long long int toUint64(char * buffer, int start, int length, int bigEndian){
	unsigned long long  int result = (unsigned long long  int)buffer[start], m = 8;

	for (int i = start + 1; i < start + length; i++){
		result = result | (unsigned long long  int)buffer[i] << m;
		m += 8;
	}
	return result;
}
unsigned int toUint32(char * buffer, int start, int length, int bigEndian){
	unsigned int result = (unsigned int)buffer[start], m = 8;

	for (int i = start + 1; i < start + length; i++){
		result = result | (unsigned int)buffer[i] << m;
		m += 8;
	}
	return result;
}

int main(){
	printf("RoadMap\n-------------------- -\nMenu:\n1. Obstacle acquisition.\n2. Generate PRM and find shortest path.\n3. Temperature check.\n4. Plot.\n5. Students addition\n6. Exit.\n");
	int input = 0;


	while (1){
		printf("Enter choice:\n");
		scanf("%d", &input);
		if (input == 1){
			char *leadin = get_segment(filename, 0, 28);
			printf("TDMS version - %d\n", toUint32(leadin, 8, 4, 0));
			free(leadin);
			read_metadata(28);
		}
		else if (input == 2)
			exit();
		else if (input == 3)
			exit();
		else if (input == 4)
			exit();
		else if (input == 5)
			exit();
		else if (input == 6){
			printf("Bye Bye!\n");
			exit(1);
		}
		else
			printf("Error: unkonwn input\n");
	}

	return 0;
}