#!/usr/bin/perl
# use warnings;
use strict;

### Globals
my $version = "0.0.1";
my %matched;
my $lineout;
my $php_ini = shift or die usage();

### Main
open( INFILE, "<$php_ini" )
  or die  "Cannot open $php_ini or file does not exist.\n\n" .  usage();
open( OUTFILE, ">>./php.ini.tmp" );
`cp -f $php_ini $php_ini.old`;
my $ln = 0;
foreach (<INFILE>) {
    chomp;
    $ln++;
    my $line = replace($_);
    if ($line) {
        $_ =~ s/^;//;
        $_ =~ s/(.*?)\s*;.*$/$1/;
        print "$ln: $_    ->    $line\n";
        $lineout = $line;
    }
    else {
        $lineout = $_;
    }
    chomp($lineout);
    print OUTFILE "$lineout\n";
}
close INFILE;
close OUTFILE;
print "Do you wish to write this file out? (y/n)  : ";
while (1) {
    chomp( my $reply = <STDIN> );
    if ( $reply eq "y" ) {
        `mv ./php.ini.tmp $php_ini`;
        last;
    }
    elsif ( $reply eq "n" ) {
        last;
    }
    print "please answer (y/n) : ";
}

## Subroutines

sub replace {
    my $current = shift;
#    if ( $current =~ m/^\s*;{0,1}$/ ) {
#        return 0;
#    }
    if ( $current =~ m/^\s*(post_max_size)\s+/ ) {
        return "$1 = 100M";
    }
    elsif ( $current =~ m/^\s*(upload_max_filesize)\s+/ ) {
        return "$1 = 100M";
    }
    elsif ( $current =~ m/^\s*(max_execution_time)\s+/ ) {
        return "$1 = 6000";
    }
    elsif ( $current =~ m/^\s*;(include_path)\s+/ && $matched{$1} == 0) {
        $matched{$1}++;
        return "$1"
          . ' = ".:/usr/share/php:/share/php:/usr/share/php/smarty"\n' . "$2";
    }
    elsif ( $current =~ m/^\s*(display_errors)\s+/ ) {
        my $reply;
        print
"Do you wish to turn display_errors off?  Leave this on for test installations. (y or n) : ";
        while (1) {
            chomp( $reply = <STDIN> );
            if ( $reply eq "y" or "n" ) { last; }
            print "(please answer y or n) : ";
        }
        if ( $reply eq "y" ) {
            return "$1 = Off";
        }
        elsif ( $reply eq "n" ) {
            return "$1 = On";
        }

    }
    elsif ( $current =~ m/^\s*(log_errors)\s+/ ) {
        return "$1 = On";
    }
    elsif ( $current =~ m/^\s*(auto_detect_line_endings)\s+/ ) {
        return "$1 = On";
    }
}

sub usage {
    return <<USAGE
$0 $version -- (robf)
Usage:  $0 <location of php.ini>
   eg.  $0 /etc/php/cli-php5/php.ini

A backup of the original will be made <location of php.ini>.old
USAGE
}