removing xpk headers?

[h0ffman]

Does anyone have a tool for removing the xpk headers off packed data files? I baiscally need to remove the first $10 bytes off a mass load of files. I was thinking i could load each one up into hrtmon, but that does seem like a massive ball ache.

Any ideas?

[jmmijo]

I thought that these were produced by a file compression utility named XPK.

If I remember correctly you can uncompress said files as well using the same tools.

Here is a Google search on more for XPK on the Amiga

http://www.google.com/search?num=100...=&oq=&gs_rfai=

[Leffmann]

First idea: just develop in a modern OS and write some Python code to fix the files. AmigaOS is just so inefficient to develop in.

but in case you're using a real Amiga, this will work:

trim file1.bin file2 file3 etc.

It overwrites the existing file so make sure to do copies. If it prints a filename then there was an error.

EDIT: I've attached a compiled AmigaOS exe for you.

#include <stdio.h>
#include <stdlib.h>


int main(int nargs, char** pargs)
{
  FILE* file;
  void* buf;
  int size;

  while(--nargs)
  {
    file = fopen(pargs[nargs], "rb");

    if(file == NULL)
    {
      printf("%s\n", pargs[nargs]);
      continue;
    }

    fseek(file, 0, SEEK_END);
    size = ftell(file)-16;
    fseek(file, 16, SEEK_SET);
    buf = malloc(size);

    if(buf == NULL)
    {
      printf("%s\n", pargs[nargs]);
      fclose(file);
      continue;
    }

    fread(buf, size, 1, file);
    fclose(file);
    file = fopen(pargs[nargs], "wb");

    if(file == NULL)
    {
      printf("%s\n", pargs[nargs]);
      free(buf);
      continue;
    }

    fwrite(buf, size, 1, file);
    fclose(file);
    free(buf);
  }

  return 0;
}

[h0ffman]

Originally Posted by Leffmann

First idea: just develop in a modern OS and write some Python code to fix the files. AmigaOS is just so inefficient to develop in.

but in case you're using a real Amiga, this will work:

trim file1.bin file2 file3 etc.

It overwrites the existing file so make sure to do copies. If it prints a filename then there was an error.

EDIT: I've attached a compiled AmigaOS exe for you.

#include <stdio.h>
#include <stdlib.h>


int main(int nargs, char** pargs)
{
  FILE* file;
  void* buf;
  int size;

  while(--nargs)
  {
    file = fopen(pargs[nargs], "rb");

    if(file == NULL)
    {
      printf("%s\n", pargs[nargs]);
      continue;
    }

    fseek(file, 0, SEEK_END);
    size = ftell(file)-16;
    fseek(file, 16, SEEK_SET);
    buf = malloc(size);

    if(buf == NULL)
    {
      printf("%s\n", pargs[nargs]);
      fclose(file);
      continue;
    }

    fread(buf, size, 1, file);
    fclose(file);
    file = fopen(pargs[nargs], "wb");

    if(file == NULL)
    {
      printf("%s\n", pargs[nargs]);
      free(buf);
      continue;
    }

    fwrite(buf, size, 1, file);
    fclose(file);
    free(buf);
  }

  return 0;
}

Cheers fella, ur a star