#!/usr/bin/perl
use strict;

if ($#ARGV != 0) {
    print("Correct command usage: \n");
    print("   perl buildTexxml.pl all\n");
    print("Or \n");
    print("   perl buildTexxml.pl section\n");
}

my $option = $ARGV[0]; 

my @section = `cat section_order.txt`;
chomp(@section);

if ($option eq 'all') {
    my $section_list;
    foreach my $section (@section) {
	$section_list .= 'sections/'.$section.' ';
    }
    system("cat sections/start.texxml $section_list sections/end.texxml > course.manual.texxml");
}

if ($option eq 'section') {
    print("Choose from the following manual sections:\n");
    my $num=0;
    foreach my $section (@section) {
	print("$num - $section\n");
	$num++;
    }
    $num--;

    print("Enter a number 0 - $num for the section you want to print: ");
    my $selection=<STDIN>;
    chomp($selection);

    if ($selection < 0 || $selection > $#section) {
	print("Invalid selection ($selection)\n");
	exit(1);
    }
    print("builing section $section[$selection]\n");
    system("cat sections/start.texxml sections/$section[$selection] sections/end.texxml > section.manual.texxml"); 
}