#!/usr/bin/perl -w

################################################################################
# File   : add_to_aspell_dict
# Purpose: Merges a file of new words into an existing dictionary file.
#          The resulting file is uniquified and sorted before being written out.
# Usage  : add_to_aspell_dict <filename_of_new_words>
################################################################################
# Initialize variables
# Private Octave dictionary for Aspell
$octdict_fname = './doccheck/aspell-octave.en.pws';

################################################################################
# Parse command line arguments
if (@ARGV != 1)
{
   die "USAGE: add_to_aspell_dict <filename_of_new_words>\n";
}

$new_words_fname = shift(@ARGV);
if (!-r $new_words_fname)
{
	die "Unable to read input file: $new_words_fname\n";
}

################################################################################
# Add new words to a dictionary database
open (FH, "<$new_words_fname") or die "Unable to open file: $new_words_fname\n";
while (<FH>) { $dict_db{$_} = 1; }
close (FH);

# Add words from existing dictionary to dictionary database
open (FH, "<$octdict_fname") or die "Unable to open Octave dictionary: $octdict_fname\n";
$header = <FH>;
while (<FH>) { $dict_db{$_} = 1; }
close (FH);

# Remove old dictionary file and write out new one
unlink ($octdict_fname) or die "Unable to delete Octave dictionary: $octdict_fname\n";
open (FH, ">$octdict_fname") or die "Unable to open file for writing: $octdict_fname\n";
print FH $header;
print FH sort keys(%dict_db);
close (FH);