unidup.c File Reference

unidup - Check for duplicate code points in sorted unifont.hex file More...

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

Include dependency graph for unidup.c:

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Macros
#define	MAXBUF   256
	Maximum input line length - 1.

Functions
int	main (int argc, char **argv)
	The main function.

Detailed Description

unidup - Check for duplicate code points in sorted unifont.hex file

Author

Paul Hardy, unifoundry <at> unifoundry.com, December 2007

Copyright

Copyright (C) 2007, 2008, 2013 Paul Hardy

This program reads a sorted list of glyphs in Unifont .hex format and prints duplicate code points on stderr if any were detected.

Synopsis: unidup < unifont_file.hex

      [Hopefully there won't be any output!]

Definition in file unidup.c.

Macro Definition Documentation

MAXBUF

#define MAXBUF   256

Maximum input line length - 1.

Definition at line 43 of file unidup.c.

Function Documentation

main()

int main	(	int	argc,
		char **	argv
	)

The main function.

Parameters

[in]	argc	The count of command line arguments.
[in]	argv	Pointer to array of command line arguments.

Returns

This program exits with status 0.

Definition at line 54 of file unidup.c.

{
 
   int  ix, iy;  /* two code points to compare for equality */
   char inbuf[MAXBUF];
   char *infile;   /* the input file name */
   FILE *infilefp; /* file pointer to input file */
 
   if (argc > 1) {
      infile = argv[1];
      if ((infilefp = fopen (infile, "r")) == NULL) {
         fprintf (stderr, "\nERROR: Can't open file %s\n\n", infile);
         exit (EXIT_FAILURE);
      }
   }
   else {
      infilefp = stdin;
   }
 
   ix = -1;
 
   while (fgets (inbuf, MAXBUF-1, infilefp) != NULL) {
      sscanf (inbuf, "%X", (unsigned *)&iy);
      if (ix == iy) fprintf (stderr, "Duplicate code point: %04X\n", ix);
      else ix = iy;
   }
   exit (0);
}