findcmd.pl to HTML.

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Generated: Mon Aug 29 19:34:34 2016 from findcmd.pl 2016/07/25 6.6 KB. text copy

#!/usr/bin/perl -w
# NAME: findcmd.pl
# AIM: Given a 'command', search for it...
# 25/07/2016 - Initial pop
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 = "0.0.5 2016-07-25";
my $load_log = 0;
my $find_cmd = '';
my $verbosity = 0;
my $out_file = '';

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

### program variables
my @warnings = ();
my $cwd = cwd();
my $envstg = $ENV{"PATH"};
my @paths = split(/;+/,$envstg);
my @matches = ();

# PATHEXT=.COM;.EXE;.BAT;.CMD;.VBS;.VBE;.JS;.JSE;.WSF;.WSH;.MSC;.pyw;.PY
my @pathext = qw( .com .exe .bat .cmd );

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 find_cmd_in_path($$$) {
    my ($cmd,$p,$rcnt) = @_;
    my ($ext,$ff);
    if (-d $p) {
        my $ecnt = scalar @pathext;
        $ff = "$p$PATH_SEP$cmd";
        if ( -f $ff) {
            prt("Found $ff\n");
            push(@matches,$ff);
            ${$rcnt}++;
        }
        foreach $ext (@pathext) {
            $ff = "$p$PATH_SEP$cmd$ext";
            if ( -f $ff) {
                prt("Found $ff\n");
                push(@matches,$ff);
                ${$rcnt}++;
            }
        }
    }
}

sub find_in_paths($$$) {
    my ($cmd,$pth,$rcnt) = @_;
    my $max = scalar @paths;
    my ($i,$p);
    $p = $pth# try local path
    find_cmd_in_path($cmd,$p,$rcnt);
    # and try EACH path in PATH
    for ($i = 0; $i < $max; $i++) {
        $p = $paths[$i];
        if (-d $p) {
            find_cmd_in_path($cmd,$p,$rcnt);
        }
    }
}



sub find_cmd($) {
    my $cmd = shift;
    my $max = scalar @paths;
    my $ecnt = scalar @pathext;
    my ($i,$p);
    my $vcnt = 0;
    my $cnt = 0;
    for ($i = 0; $i < $max; $i++) {
        $p = $paths[$i];
        if (-d $p) {
            $vcnt++;
        }
    }
    prt("Trying to find '$cmd', in $vcnt/$max PATH paths, using $ecnt extensions...\n");
    my $pth = '.';
    find_in_paths($cmd,$pth,\$cnt);
    prt("Found $cnt matches...\n");
    my $list = join("\n",@matches);
    prt("Found\n$list\n") if ($cnt && VERB1());
}

#########################################
### MAIN ###
parse_args(@ARGV);
find_cmd($find_cmd);
##process_in_file($find_cmd);
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);
    my $verb = VERB2();
    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);
                    }
                }
                $verb = VERB2();
                prt("Verbosity = $verbosity\n") if ($verb);
            } elsif ($sarg =~ /^l/) {
                if ($sarg =~ /^ll/) {
                    $load_log = 2;
                } else {
                    $load_log = 1;
                }
                prt("Set to load log at end. ($load_log)\n") if ($verb);
            } elsif ($sarg =~ /^o/) {
                need_arg(@av);
                shift @av;
                $sarg = $av[0];
                $out_file = $sarg;
                prt("Set out file to [$out_file].\n") if ($verb);
            } else {
                pgm_exit(1,"ERROR: Invalid argument [$arg]! Try -?\n");
            }
        } else {
            $find_cmd = $arg;
            prt("Set input to [$find_cmd]\n") if ($verb);
        }
        shift @av;
    }

    if ($debug_on) {
        prtw("WARNING: DEBUG is ON!\n");
        if (length($find_cmd) ==  0) {
            $find_cmd = $def_file;
            prt("Set DEFAULT input to [$find_cmd]\n");
        }
    }
    if (length($find_cmd) ==  0) {
        pgm_exit(1,"ERROR: No input 'cmd' found in command!\n");
    }
    #if (! -f $find_cmd) {
    #    pgm_exit(1,"ERROR: Unable to find in file [$find_cmd]! 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

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