c-multicodec/vhutils.h

#ifndef VARHEXUTILS
#define VARHEXUTILS

#include <stdio.h>
#include <inttypes.h>
#include "varint.h"
#include <stdlib.h>
#include <string.h>
#include "endian.h"
void hex2str(const char * h, char * s, int sizs)
{
    static char hex[] = "0123456789ABCDEF";
    int i   = 0;
    int len = strlen(h)/2;
    if (len > sizs)
        len = sizs;
    for (i = 0; i < len; ++i)

    {
       char* p = strchr(hex, *(h+2*i));
       if (p != NULL)
       {
           s[i] = (char)(unsigned char)((p-hex)<<4);
           p = strchr(hex, *(h+2*i+1));
           if (p != NULL)
           {
              s[i] |= (char)(p-hex);
           }
           else
              s[i] = '?';
       }
       else
          s[i] = '?';
    }
    if (i < sizs * 2)
        *(s+i)='\0';
}
void str2hex(unsigned char* hexstring, unsigned char* string)
{
       unsigned char ch,i,j,len;

       len = strlen(string);

       for(i=0,j=0;i<len;i++,j+=2)
       {
            ch = string[i];

            if( ch >= 0 && ch <= 0x0F)
            {
                hexstring[j] = 0x30;

                if(ch >= 0 && ch <= 9)
                    hexstring[j+1] = 0x30 + ch;
                else
                    hexstring[j+1] = 0x37 + ch;
            }
            else  if( ch >= 0x10 && ch <= 0x1F)
            {
                hexstring[j] = 0x31;
                ch -= 0x10;

                if(ch >= 0 && ch <= 9)
                    hexstring[j+1] = 0x30 + ch;
                else
                    hexstring[j+1] = 0x37 + ch;
            }
            else  if( ch >= 0x20 && ch <= 0x2F)
            {
                hexstring[j] = 0x32;
                ch -= 0x20;

                if(ch >= 0 && ch <= 9)
                    hexstring[j+1] = 0x30 + ch;
                else
                    hexstring[j+1] = 0x37 + ch;
            }
            else  if( ch >= 0x30 && ch <= 0x3F)
            {
                hexstring[j] = 0x33;
                ch -= 0x30;

                if(ch >= 0 && ch <= 9)
                    hexstring[j+1] = 0x30 + ch;
                else
                    hexstring[j+1] = 0x37 + ch;
            }
            else  if( ch >= 0x40 && ch <= 0x4F)
            {
                hexstring[j] = 0x34;
                ch -= 0x40;

                if(ch >= 0 && ch <= 9)
                    hexstring[j+1] = 0x30 + ch;
                else
                    hexstring[j+1] = 0x37 + ch;
            }
            else  if( ch >= 0x50 && ch <= 0x5F)
            {
                hexstring[j] = 0x35;
                ch -= 0x50;

                if(ch >= 0 && ch <= 9)
                    hexstring[j+1] = 0x30 + ch;
                else
                    hexstring[j+1] = 0x37 + ch;
            }
            else  if( ch >= 0x60 && ch <= 0x6F)
            {
                hexstring[j] = 0x36;
                ch -= 0x60;

                if(ch >= 0 && ch <= 9)
                    hexstring[j+1] = 0x30 + ch;
                else
                    hexstring[j+1] = 0x37 + ch;
            }
            else  if( ch >= 0x70 && ch <= 0x7F)
            {
                hexstring[j] = 0x37;
                ch -= 0x70;

                if(ch >= 0 && ch <= 9)
                    hexstring[j+1] = 0x30 + ch;
                else
                    hexstring[j+1] = 0x37 + ch;
            }
       }
       hexstring[j] = 0x00;
}
int8_t Var_Bytes_Count(uint8_t * countbytesofthis)
{
	static int8_t xrzk_bytescnt = 0;
	for(int8_t i=0; i<10; i++)
	{
		if(countbytesofthis[i] != 0)
		{
			xrzk_bytescnt++;
		}
	}
	return xrzk_bytescnt;
}
uint8_t * Num_To_Varint_64(uint64_t TOV64INPUT) //UINT64_T TO VARINT
{
	static uint8_t buffy_001[60] = {0};
	uvarint_encode64(TOV64INPUT, buffy_001, 60);
	return buffy_001;
}
uint8_t * Num_To_Varint_32(uint32_t TOV32INPUT) // UINT32_T TO VARINT
{
	static uint8_t buffy_032[60] = {0};
	uvarint_encode32(TOV32INPUT, buffy_032, 60);
	return buffy_032;
}
uint64_t * Varint_To_Num_64(uint8_t TON64INPUT[60]) //VARINT TO UINT64_t
{
	static uint64_t varintdecode_001 = 0;
	uvarint_decode64(TON64INPUT, 60, &varintdecode_001);
	return &varintdecode_001;
}
uint32_t * Varint_To_Num_32(uint8_t TON32INPUT[60]) //VARINT TO UINT32_t
{
	static uint32_t varintdecode_032 = 0;
	uvarint_decode32(TON32INPUT, 60, &varintdecode_032);
	return &varintdecode_032;
}
//
char * Int_To_Hex(uint64_t int2hex) //VAR[binformat] TO HEX
{
	static char int2hex_result[800]="\0";
	memset(int2hex_result,0,sizeof(int2hex_result));
	sprintf (int2hex_result, "%02lX", int2hex);
	return int2hex_result;
}
uint64_t Hex_To_Int(char * hax) 
{	
	char * hex = NULL;
	hex=hax;
    uint64_t val = 0;
    while (*hex) 
	{
		// get current character then increment
        uint8_t byte = *hex++;
		// transform hex character to the 4bit equivalent number, using the ascii table indexes
		if (byte >= '0' && byte <= '9') byte = byte - '0';
		else if (byte >= 'a' && byte <='f') byte = byte - 'a' + 10;
		else if (byte >= 'A' && byte <='F') byte = byte - 'A' + 10;    
		// shift 4 to make space for new digit, and add the 4 bits of the new digit 
		val = (val << 4) | (byte & 0xF);
	}
	return val;
}
//
void vthconvert(int size, char * crrz01, uint8_t * xbuf)
{
	uint8_t buf[400];
	bzero(buf,400);
	
	//fixing the buf
	for(int cz=0; cz<size;cz++)
	{
		buf[cz] = xbuf[cz];
	}
	//
	if(crrz01!=NULL)
	{
		char * crrz1 = NULL;
		crrz1 = crrz01;
		char conv_proc[800]="\0";
		int i;
		for(i=0; i < (size*2); i++)
		{
			if(buf[i]!='\0')
			{
				sprintf (conv_proc, "%02X", buf[i]);
				//printf("%d:%d\n",i, buf[i]);
				strcat(crrz1, conv_proc);
			}
		}
		crrz1 = NULL;
	}
}
char * Var_To_Hex(int realsize, uint8_t * TOHEXINPUT) //VAR[binformat] TO HEX
{
	for(int ix=realsize;ix<400;ix++)
	{
		TOHEXINPUT[ix] = '\0';
	}
	if(TOHEXINPUT != NULL)
	{
		static char convert_resultz1[800]="\0";
		bzero(convert_resultz1,800);
		vthconvert(realsize, convert_resultz1, TOHEXINPUT);
		return convert_resultz1;
	}
}
uint8_t * Hex_To_Var(char * Hexstr) //HEX TO VAR[BINFORMAT]
{
	static uint8_t buffy_HEX[400] = {0};
	bzero(buffy_HEX,400);
	int i;
	char codo[800] = "\0";
	bzero(codo,800);
	strcpy(codo, Hexstr);
	char code[3];
	bzero(code,3);
	code[3]='\0';
	int x = 0;
	int fori001=0;
	for(fori001=0;fori001<800;fori001++)
	{
		strncpy(&code[0],&codo[fori001],1);
		strncpy(&code[1],&codo[fori001+1],1);
    	char *ck = NULL;
    	uint64_t lu = 0;
    	lu=strtoul(code, &ck, 16);
		buffy_HEX[x] = lu;
		//printf("%s - %lu\n",code,lu);
		fori001++;
		x++;
	}
	return buffy_HEX;
}
//
void convert(char * convert_result, uint8_t * buf)					//Both of them read them properly.
{
	char conv_proc[800]="\0";
	bzero(conv_proc,800);
	int i;
	for(i=0; i < 10; i++)
	{
		sprintf (conv_proc, "%02X", buf[i]);
		//printf("%d:%d\n",i, buf[i]);
		strcat(convert_result, conv_proc);
	}
}
char * Num_To_HexVar_64(uint64_t TOHVINPUT) //UINT64 TO HEXIFIED VAR 
{											//Code to varint - py
	static char convert_result[800]="\0";//Note that the hex resulted from this will differ from py
	bzero(convert_result,800);
	memset(convert_result,0,sizeof(convert_result));//But if you make sure the string is always 20 chars in size
	uint8_t buf[400] = {0};
	bzero(buf,400);
	uvarint_encode64(TOHVINPUT, buf, 800);
	convert(convert_result,buf);
	return convert_result;
}
void convert2(char * convert_result2, uint8_t * bufhx)
{
	uint8_t * buf = NULL;
	buf = bufhx;
	char conv_proc[3]="\0";
	conv_proc[3] = '\0';
	bzero(conv_proc, 3);
	int i;
	for(i=0; i == 0; i++)
	{
		sprintf (conv_proc, "%02X", buf[i]);
		//printf("aaaaaaaaaaah%d:%d\n",i, buf[i]);
		strcat(convert_result2, conv_proc);
	}
	buf = NULL;
}
char * Num_To_HexVar_32(uint32_t TOHVINPUT) //UINT32 TO HEXIFIED VAR
{											//Code to varint - py
	static char convert_result2[3]="\0";
	bzero(convert_result2,3);
	convert_result2[2] = '\0';
	memset(convert_result2,0,sizeof(convert_result2));
	uint8_t buf[1] = {0};
	bzero(buf,1);
	uvarint_encode32(TOHVINPUT, buf, 1);
	convert2(convert_result2,buf);
	return convert_result2;
}

uint64_t HexVar_To_Num_64(char * theHEXstring) //HEXIFIED VAR TO UINT64_T
{											   //Varint to code - py
	uint8_t buffy[400] = {0};
	char codo[800] = "\0";
	bzero(codo,800);
	strcpy(codo, theHEXstring);
	char code[3] = "\0";
	int x = 0;
	for(int i= 0;i<399;i++)
	{
		strncpy(&code[0],&codo[i],1);
		strncpy(&code[1],&codo[i+1],1);
    	char *ck = NULL;
    	uint64_t lu = 0;
    	lu=strtoul(code, &ck, 16);
		buffy[x] = lu;
		i++;
		x++;
	}
	static uint64_t decoded;
	uvarint_decode64 (buffy, 400, &decoded);
	return decoded;
}
uint32_t HexVar_To_Num_32(char theHEXstring[]) //HEXIFIED VAR TO UINT32_T
{												//Varint to code py
	uint8_t buffy[400] = {0};
	bzero(buffy,400);
	char codo[800] = "\0";
	bzero(codo,800);
	strcpy(codo, theHEXstring);
	char code[3] = "\0";
	bzero(code,3);
	code[3] = '\0';
	int x = 0;
	for(int i= 0;i<399;i++)
	{
		strncpy(&code[0],&codo[i],1);
		strncpy(&code[1],&codo[i+1],1);
    	char *ck = NULL;
    	uint32_t lu = {0};
    	lu=strtoul(code, &ck, 16);
		buffy[x] = lu;
		i++;
		x++;
	}
	static uint32_t decoded;
	uvarint_decode32 (buffy, 10, &decoded);
	return decoded;
}
#endif