hex2bin 1

[riteshshah]

Folks,

Anyone have any idea on where I can find some 'c' code (on sun solaris 2.8) that will convert a hex file to binary?

Thanks!

 

[DaveSinkula]

All files are binary. Could you better describe what you are trying to do?

 

[riteshshah]

Hi Dave,

Yep, basically I have an application that converts a tif file (in effect the format of any file received over FAX) into hex so it can be easily routed via MQ or SMTP, and I need to build an app. to convert it back to a tif. I've got some code I've built in C to do the mq get and record the message. I can also parse for the section relating to the hex and then write this into a temp. file. Then I need to call a routine that'll convert a hex file into binary and then I can further process the final message and send to our archival app.

I've got an executable that will convert in dos (windows app) but I want some a 'c' code equiv.

Thanks,

 

[DaveSinkula]

Let me see if I understand this correctly:

You have a file for input, the data in which is text that contains the hexadecimal value representation of bytes. For example,

48656C6C6F20776F726C64

You want to take this input file and convert this text and convert it into the byte it represents. You would then get an output like this,

Hello world

If that is so, you could start with something like this.

#include <stdio.h>

int main(void)
{
   static const char infilename[]  = "file.txt";
   static const char outfilename[] = "file.bin";
   FILE *infile  = fopen(infilename, "r");
   FILE *outfile = fopen(outfilename, "wb");
   if ( infile && outfile )
   {
      int ch;
      while ( fscanf(infile, "%2x", &ch) == 1 )
      {
         fputc(ch, outfile);
      }
      fclose(infile);
      fclose(outfile);
   }
   return 0;
}

 

[riteshshah]

Hi Dave,

My final output should be a tif image. Someone has mentioned 'base64' in relation to this.. So, to summarise, a message comes into the application in a tif format. It is then converted from tif into a hex representation. I need to get this hex representation and convert it back to a tif image.

I'll give the code above a go.. and see what I get out,

Thanks for the help.