#!/usr/bin/perl -w
#
# subvert.pl: display your change log from subversion
use strict;
use CGI qw(:standard );
use CGI::Carp qw(fatalsToBrowser); # For better error messages (Thanks, ghenry)

my $WORK_DIR='/var/www'; # location of directory that's currently checked out
my $start = param('start') || 'BASE';
my $end = param('end') || 'HEAD';
validate();

print header(),
        start_html({-style=>'/stylesheets/subvert.css',-title=>"SUBVERt"}),
        h1("SUBVERt: Subversion Log Viewer");
print h2("Showing Revisions From: $start to $end");
print form();
print showlog();
print form();
print end_html();

# validate start and end params
sub validate() {
        for ($start,$end) {
                next if ($_ eq "BASE" || $_ eq "HEAD" || $_ eq "PREV" || $_ eq "COMMITTED");
                $_=~s/[^\d]//gi;
        }
}

# builds the submit form
sub form() {
        my $return="";
        $return.=start_form({-method=>"post"});
        $return.="Search repository from revision: ";
        $return.=textfield({-name=>"start"},"$start");
        $return.="   to revision: ";
        $return.=textfield({-name=>"end"},"$end");
        $return.="     " . submit(-value=>" GO ");
        $return.=end_form();
        return div({-class=>"frm"},$return);
}
# loop through the log splitting it into entries
sub showlog() {
        my $return="";
        my $log = `svn log $WORK_DIR -r $start:$end` ;
        my @log = split /[-]{10,}/,$log;
        for (my $i=1;$i<$#log;$i++){
                $return.=parse_entry($log[$i]);
        }
        return $return;
}

# parse log entry and give it back as html
sub parse_entry() {
        my @entry = split /\n/,@_[0];
        my ($revision,$author,$date,$cmt_length) = split /\|/,$entry[1];
        my $return=h3("Revision: $revision<br />Checked in by: $author<br />Checked in on: $date<br />");
        $return.=b("Comment: ") . "<pre>";
        for (my $i=3;$i<=$#entry;$i++) {
                $return.="$entry[$i]\n";
        }
        $return.="</pre>\n";
        return div({-class=>'entry'},$return);
}

##</code><code>##

body {
        background: white;
        font: normal 12px arial,sans;
}
form {
        margin-bottom:1px;
}
div.frm {
        background-color:#ccc;
        border:1px solid black;
        margin:5px 10%;
        padding:2px;
        text-align:right;
}
div.entry {
        background-color:#ccc;
        border:1px solid black;
        margin:5px 10%;
        padding:5px;
}
pre{ background-color:#fff;}
h1{
        text-align:center;
        font: bold 28px arial,sans;
}
h2{
        text-align:center;
        font: bold 21px arial,sans;
}
h3 {
        background-color:#fff;
        font: bold 16px arial,sans;
        margin:0 0 0.4em 0;
}