#!/usr/bin/perl
# scripts -- lintian collection script

# Copyright (C) 1998 by Richard Braakman
# 
# 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, you can find it on the World Wide
# Web at http://www.gnu.org/copyleft/gpl.html, or write to the Free
# Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
# MA 02111-1307, USA.

open(SCRIPTS, ">scripts") or fail("cannot open scripts output file: $!");
open(INDEX, "index") or fail("cannot open index file: $!");

while (<INDEX>) {
    next unless /^-/;   # skip non-files
    chop;
    # Extract the filename field from the tar-like file index.
    # Note that the split is done with an explicit limit so that filenames
    # with embedded spaces are handled correctly.
    $file = (split(' ', $_, 6))[5];
    $file =~ s/ link to .*//;    # cut off info about hard links
    # This used to call fail() instead of next.  However, the check to
    # see if all files in the index can be opened should be done elsewhere.
    open(FILE, "unpacked/$file") or next;
    if (read(FILE, $magic, 2) and $magic eq '#!') {
	$scriptpath = <FILE>;
	# This used to have (\S+) rather than (\S*), but that went wrong
	# with scripts that start with an empty #! line.
	$scriptpath =~ s/^\s*(\S*).*/$1/s;
	print SCRIPTS "$scriptpath $file\n"
	    unless $scriptpath =~ /^#!/;  # avoid lincity's #!#!#! datafiles
    }
    close(FILE);
}
close(INDEX);
close(SCRIPTS);

open(SCRIPTS, ">control-scripts")
    or fail("cannot open control-scripts output file: $!");

opendir(CONTROL, "control")
    or fail("cannot read control directory: $!");

for $file (readdir CONTROL) {
    next unless -f "control/$file";
    open(FILE, "control/$file") or fail("cannot open control/$file: $!");
    if (read(FILE, $magic, 2) and $magic eq '#!') {
	$scriptpath = <FILE>;
	$scriptpath =~ s/^\s*(\S*).*/$1/s;
	print SCRIPTS "$scriptpath $file\n"
    }
    close(FILE);
}
closedir(CONTROL);
close(SCRIPTS);

exit 0;

# -----------------------------------

sub fail {
    if ($_[0]) {
        print STDERR "internal error: $_[0]\n";
    } elsif ($!) {
        print STDERR "internal error: $!\n";
    } else {
        print STDERR "internal error.\n";
    }
    exit 1;
}
