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#!/usr/bin/perl
#
# Copyright (C) 2009-2014 Yuki Manabe and Daniel M. German
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License as
# published by the Free Software Foundation; either version 2 of
# the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see
# <http://www.gnu.org/licenses/>.
#
use Getopt::Std;
use strict;
my $path = $0;
$path =~ s/\/+[^\/]+$//;
if ($path eq '') {
$path = './';
}
# set parameters
my %opts = ();
if (!getopts ('vc:p:',\%opts) or scalar(@ARGV) != 1 ) {
print STDERR "Usage $0 -v <filename>
-v verbose
-c count of comment blocks
\n";
die;
}
my $f = $ARGV[0];
my $original = $f;
$f =~ s/'/\\'/g;
$f =~ s/\$/\\\$/g;
$f =~ s/;/\\;/g;
$f =~ s/ /\\ /g;
#die "illegal file [$f]" if $f =~ m@/\.@;
my $numberComments = 1;
$numberComments = $opts{c} if exists $opts{c};
my $verbose = 1;
$verbose = exists $opts{v};
if (get_size($original) == 0) {
print STDERR "Empty file, just exit\n" if $verbose;
exit 0; # nothing to report, just end
}
my $commentsCmd = Determine_Comments_Extractor($f);
print execute("$commentsCmd");
exit 0;
sub Determine_Comments_Extractor
{
my ($f) = @_;
if ($f =~ /\.([^\.]+)$/) {
my $ext= $1;
if ($ext =~ /^(pl|pm|py)$/
) {
########################
# for the time being, let us just extract the top 400 lines
return "cat $f | head -400";
# return "$path/hashComments.pl -p '#' '$f'";
} elsif ($ext eq 'jl' or
$ext eq 'el'
) {
return "cat $f | head -400";
# return "$path/hashComments.pl -p ';' $f";;
} elsif ($ext =~ /^(java|c|cpp|h|cxx|c\+\+|cc)$/ ) {
my $comm = `which comments`;
if ($comm ne '') {
return "comments -o -c1 $f 2> /dev/null";
} else {
return "head -400 $f";
}
} else {
return "head -700 $f";
}
} else {
return "head -700 $f";
}
}
sub execute
{
my ($c) = @_;
my $r = `$c`;
my $status = ($? >> 8);
die "execution of program [$c] failed: status [$status]" if ($status != 0);
return $r;
}
sub get_size
{
my ($f) = @_;
my $size = (stat($f))[7];
return $size;
}
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