#!/usr/bin/perl -w
# NAME: dir2bat.pl
# AIM: HIGHLY SPECIFIC - Scan C:\FG\18 getting all subdirectorie, then scan 
# c:\MDOS\*.bat files, and out a list matching the folder with a batch file
# 11/08/2013 geoff mclane http://geoffair.net/mperl
use strict;
use warnings;
use File::Basename;  # split path ($name,$dir,$ext) = fileparse($file [, qr/\.[^.]*/] )
use Cwd;
my $os = $^O;
my $perl_dir = '/home/geoff/bin';
my $PATH_SEP = '/';
my $temp_dir = '/tmp';
if ($os =~ /win/i) {
    $perl_dir = 'C:\GTools\perl';
    $temp_dir = $perl_dir;
    $PATH_SEP = "\\";
}
unshift(@INC, $perl_dir);
require 'lib_utils.pl' or die "Unable to load 'lib_utils.pl' Check paths in \@INC...\n";
# log file stuff
our ($LF);
my $pgmname = $0;
if ($pgmname =~ /(\\|\/)/) {
    my @tmpsp = split(/(\\|\/)/,$pgmname);
    $pgmname = $tmpsp[-1];
}
my $outfile = $temp_dir.$PATH_SEP."temp.$pgmname.txt";
open_log($outfile);

# user variables
my $VERS = "0.0.1 2013-03-17";
my $load_log = 0;
my $in_dir = 'C:\FG\18';
my $bat_dir = 'C:\MDOS';

my $verbosity = 0;
my $out_file = $temp_dir.$PATH_SEP."tempblist.txt";

# ### DEBUG ###
my $debug_on = 0;
my $def_file = 'def_file';

### program variables
my @warnings = ();
my $cwd = cwd();

sub VERB1() { return $verbosity >= 1; }
sub VERB2() { return $verbosity >= 2; }
sub VERB5() { return $verbosity >= 5; }
sub VERB9() { return $verbosity >= 9; }

sub show_warnings($) {
    my ($val) = @_;
    if (@warnings) {
        prt( "\nGot ".scalar @warnings." WARNINGS...\n" );
        foreach my $itm (@warnings) {
           prt("$itm\n");
        }
        prt("\n");
    } else {
        prt( "\nNo warnings issued.\n\n" ) if (VERB9());
    }
}

sub pgm_exit($$) {
    my ($val,$msg) = @_;
    if (length($msg)) {
        $msg .= "\n" if (!($msg =~ /\n$/));
        prt($msg);
    }
    show_warnings($val);
    close_log($outfile,$load_log);
    exit($val);
}


sub prtw($) {
   my ($tx) = shift;
   $tx =~ s/\n$//;
   prt("$tx\n");
   push(@warnings,$tx);
}

sub process_in_file($) {
    my ($inf) = @_;
    if (! open INF, "<$inf") {
        pgm_exit(1,"ERROR: Unable to open file [$inf]\n"); 
    }
    my @lines = <INF>;
    close INF;
    my $lncnt = scalar @lines;
    prt("Processing $lncnt lines, from [$inf]...\n");
    my ($line,$inc,$lnn);
    $lnn = 0;
    foreach $line (@lines) {
        chomp $line;
        $lnn++;
        if ($line =~ /\s*#\s*include\s+(.+)$/) {
            $inc = $1;
            prt("$lnn: $inc\n");
        }
    }
}

sub remove_base_path($$) {
    my ($ln, $bs) = @_;
    my $ln2 = path_d2u($ln);
    my $bs2 = path_d2u($bs);
    my $len1 = length($ln2);
    my $len2 = length($bs2);
    if ($len1 < $len2) {
        return $ln;
    }
    my ($i,$c1,$c2);
    for ($i = 0; $i < $len2; $i++) {
        $c1 = lc(substr($ln2,$i,1));
        $c2 = lc(substr($bs2,$i,1));
        if ($c1 ne $c2) {
            return $ln;
        }
    }
    return substr($ln,$len2);
}

sub remove_base_dir($) {
    my $ff = shift;
    my $bs = $bat_dir;
    return $ff if (length($bs) == 0);
    $bs .= $PATH_SEP if ( !($bs =~ /(\\|\/)$/) );
    return remove_base_path($ff,$bs);
}


sub scan_in_dir()
{
    my $icnt = 0;
    my $dir = $in_dir;
    my $bats = $bat_dir;
    if (! opendir(DIR,$dir) ) {
        prg_exit(1,"ERROR: Unable to open directory $dir\n");
    }
    my @files = readdir(DIR);
    closedir(DIR);
    $icnt = scalar @files;
    prt("Got $icnt items in $dir\n");
    if (! opendir(DIR,$bats)) {
        prg_exit(1,"ERROR: Unable to open directory $bats\n");
    }
    my @batfiles = readdir(DIR);
    closedir(DIR);
    $icnt = scalar @batfiles;
    prt("Got $icnt items in $bats\n");

    ut_fix_directory(\$dir);
    ut_fix_directory(\$bats);
    my ($file,$ff, $dcnt, $bcnt,$tot_mdos,$j,@lines,$line,$len);
    my @dirs = ();
    my @bats = ();
    $tot_mdos = 0;
    my $max_dlen = 0;
    foreach $file (@files) {
        next if ($file eq '.');
        next if ($file eq '..');
        $ff = $dir.$file;
        if (-d $ff) {
            $len = length($file);
            $max_dlen = $len if ($len > $max_dlen);
            push(@dirs,[$ff,$file]);
        }
    }
    foreach $file (@batfiles) {
        next if ($file eq '.');
        next if ($file eq '..');
        $ff = $bats.$file;
        if (-f $ff) {
            $tot_mdos++;
            if ($file =~ /\.bat$/i) {
                push(@bats,$ff);
            }
        }
    }
    $dcnt = scalar @dirs;
    $bcnt = scalar @bats;
    prt("Got $dcnt directories to find in $bcnt bat files of $tot_mdos files...\n");
    my %finds = ();
    my ($rh,$cnt,$base);
    $cnt = 0;
    foreach $ff (@bats) {
        $cnt++;
        prt("$cnt of $bcnt: Checking BAT $ff...\n");
        if (open INF, "<$ff") {
            @lines = <INF>;
            close INF;
            foreach $line (@lines) {
                chomp $line;
                # But NOT if the line starts with an '@echo '
                # next if ($line /^\s*\@echo\s+/i)
                # no, only interested in lines that begin with CD
                next if ( !($line =~ /^\s*\@cd\s+/i) );
                for ($j = 0; $j < $dcnt; $j++) {
                    $file = $dirs[$j][1];
                    #if ($line =~ /$file/) {
                    if ($line =~ /(\\|\/)$file(\\|\/|\b)/) {
                        # line contains this directory - store it
                        $finds{$file} = {} if (!defined $finds{$file});
                        $rh = $finds{$file};
                        $base = remove_base_path($ff,$bats);
                        ${$rh}{$base} = 1;    # store each BAT file only once for this DIRECTORY
                        ###push(@{$ra},$ff);   # this BAT contains this direco
                    }
                }
            }
        } else {
            prtw("WARNING: Unable to open [$ff]!\n");
        }
    }
    # all in %finds
    my ($key,$val,$msg,@all);
    @all = ();
    foreach $key (sort keys %finds) {
        $rh = $finds{$key};
        $msg = $key;
        $msg .= ' ' while (length($msg) < $max_dlen);
        $msg .= ' ';
        foreach $val (sort keys %{$rh}) {
            $msg .= "$val ";
        }
        prt("$msg\n");
        push(@all,$msg);
    }
    if (length($out_file)) {
        write2file(join("\n",@all)."\n",$out_file);
        prt("List written to [$out_file]\n");
    }
}


#########################################
### MAIN ###
##parse_args(@ARGV);
##process_in_file($in_dir);
scan_in_dir();
pgm_exit(0,"");
########################################

sub need_arg {
    my ($arg,@av) = @_;
    pgm_exit(1,"ERROR: [$arg] must have a following argument!\n") if (!@av);
}

sub parse_args {
    my (@av) = @_;
    my ($arg,$sarg);
    while (@av) {
        $arg = $av[0];
        if ($arg =~ /^-/) {
            $sarg = substr($arg,1);
            $sarg = substr($sarg,1) while ($sarg =~ /^-/);
            if (($sarg =~ /^h/i)||($sarg eq '?')) {
                give_help();
                pgm_exit(0,"Help exit(0)");
            } elsif ($sarg =~ /^v/) {
                if ($sarg =~ /^v.*(\d+)$/) {
                    $verbosity = $1;
                } else {
                    while ($sarg =~ /^v/) {
                        $verbosity++;
                        $sarg = substr($sarg,1);
                    }
                }
                prt("Verbosity = $verbosity\n") if (VERB1());
            } elsif ($sarg =~ /^l/) {
                if ($sarg =~ /^ll/) {
                    $load_log = 2;
                } else {
                    $load_log = 1;
                }
                prt("Set to load log at end. ($load_log)\n") if (VERB1());
            } elsif ($sarg =~ /^o/) {
                need_arg(@av);
                shift @av;
                $sarg = $av[0];
                $out_file = $sarg;
                prt("Set out file to [$out_file].\n") if (VERB1());
            } else {
                pgm_exit(1,"ERROR: Invalid argument [$arg]! Try -?\n");
            }
        } else {
            $in_dir = $arg;
            prt("Set input to [$in_dir]\n") if (VERB1());
        }
        shift @av;
    }

    if ($debug_on) {
        prtw("WARNING: DEBUG is ON!\n");
        if ((length($in_dir) ==  0) && $debug_on) {
            $in_dir = $def_file;
            prt("Set DEFAULT input to [$in_dir]\n");
        }
    }
    if (length($in_dir) ==  0) {
        pgm_exit(1,"ERROR: No input files found in command!\n");
    }
    if (! -f $in_dir) {
        pgm_exit(1,"ERROR: Unable to find in file [$in_dir]! Check name, location...\n");
    }
}

sub give_help {
    prt("$pgmname: version $VERS\n");
    prt("Usage: $pgmname [options] in-file\n");
    prt("Options:\n");
    prt(" --help  (-h or -?) = This help, and exit 0.\n");
    prt(" --verb[n]     (-v) = Bump [or set] verbosity. def=$verbosity\n");
    prt(" --load        (-l) = Load LOG at end. ($outfile)\n");
    prt(" --out <file>  (-o) = Write output to this file.\n");
}

# eof - template.pl