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#!/usr/bin/perl

use List::MoreUtils qw(uniq nsort_by);

# four files: 
# - der: input file, unsorted list of dev userids, may contain duplicates, 
#        generated by LaTeX
# - ded: database of developers, format
#        * developer user id
#        * real name (unicode, american convention Firstname X. Lastname)
#        * link (wiki, homepage, ...)
# - deg: output file, LaTeX fragment that can be sourced




# Main code start



# Read the list of devs referenced in the LaTeX file.
open my $der, '<', "decisions.der";
my @derlist = <$der>;
close $der;
chomp @derlist;

my @developers=uniq nsort_by { $_ } @derlist;



# Read the database
open my $ded, '<', "decisions.ded";

my $devname={};
my $devlink={};

while (1) {
  defined ( my $uid=<$ded> ) or last;
  defined ( my $name=<$ded> ) or last;
  defined ( my $link=<$ded> ) or last;
  chomp $uid; 
  chomp $name;
  chomp $link;
  $devname{$uid}=$name;
  print "name of $uid is $name\n";
  $devlink{$uid}=$link;
};

close $ded;


# Write out the TeX input file
open my $deg, '>', "decisions.deg";

print $deg '\renewcommand{\devname}[1]{%'."\n";
foreach(@developers) {
  my $cur=$_;

  print $deg '\ifthenelse{\equal{#1}{'.$cur.'}}{'.$devname{$cur}.'}{}%'."\n";
};
print $deg '}'."\n";

print $deg '\renewcommand{\devlink}[1]{%'."\n";
foreach(@developers) {
  my $cur=$_;

  print $deg '\ifthenelse{\equal{#1}{'.$cur.'}}{'.$devlink{$cur}.'}{}%'."\n";
};
print $deg '}'."\n";

close $deg;