       1 #!/usr/bin/perl -w
       2 #
       3 # File: ModifyNewLineChar.pl
       4 # Author: Manish Sud <msud@san.rr.com>
       5 #
       6 # Copyright (C) 2018 Manish Sud. All rights reserved.
       7 #
       8 # This file is part of MayaChemTools.
       9 #
      10 # MayaChemTools is free software; you can redistribute it and/or modify it under
      11 # the terms of the GNU Lesser General Public License as published by the Free
      12 # Software Foundation; either version 3 of the License, or (at your option) any
      13 # later version.
      14 #
      15 # MayaChemTools is distributed in the hope that it will be useful, but without
      16 # any warranty; without even the implied warranty of merchantability of fitness
      17 # for a particular purpose.  See the GNU Lesser General Public License for more
      18 # details.
      19 #
      20 # You should have received a copy of the GNU Lesser General Public License
      21 # along with MayaChemTools; if not, see <http://www.gnu.org/licenses/> or
      22 # write to the Free Software Foundation Inc., 59 Temple Place, Suite 330,
      23 # Boston, MA, 02111-1307, USA.
      24 #
      25
      26 use strict;
      27 use FindBin; use lib "$FindBin::Bin/../lib";
      28 use Getopt::Long;
      29 use File::Basename;
      30 use Text::ParseWords;
      31 use Benchmark;
      32 use FileUtil;
      33 use TextUtil;
      34
      35 my($ScriptName, %Options, $StartTime, $EndTime, $TotalTime);
      36
      37 # Autoflush STDOUT
      38 $| = 1;
      39
      40 # Starting message...
      41 $ScriptName = basename $0;
      42 print "\n$ScriptName:Starting...\n\n";
      43 $StartTime = new Benchmark;
      44
      45 # Get the options and setup script...
      46 SetupScriptUsage();
      47 if ($Options{help} || @ARGV < 1) {
      48   die GetUsageFromPod("$FindBin::Bin/$ScriptName");
      49 }
      50
      51 my( @FilesList);
      52 @FilesList = ExpandFileNames(\@ARGV, "");
      53
      54 # Process options...
      55 print "Processing options...\n";
      56 my(%OptionsInfo);
      57 ProcessOptions();
      58
      59 print "Checking input file(s)...\n";
      60 my(%FilesInfo);
      61 RetrieveFilesInfo();
      62
      63 # Generate output files...
      64 my($FileIndex);
      65 if (@FilesList > 1) {
      66   print "\nProcessing files...\n";
      67 }
      68 for $FileIndex (0 .. $#FilesList) {
      69   if ($FilesInfo{FileOkay}[$FileIndex]) {
      70     print "\nProcessing file $FilesList[$FileIndex]...\n";
      71     ModifyNewLineChar($FileIndex);
      72   }
      73 }
      74 print "\n$ScriptName:Done...\n\n";
      75
      76 $EndTime = new Benchmark;
      77 $TotalTime = timediff ($EndTime, $StartTime);
      78 print "Total time: ", timestr($TotalTime), "\n";
      79
      80 ###############################################################################
      81
      82 # Modify new line characters...
      83 sub ModifyNewLineChar {
      84   my($Index) = @_;
      85   my($File, $NewFile, $Mode, $Nothing);
      86
      87   $File = $FilesList[$Index];
      88   $NewFile = $FilesInfo{OutFile}[$Index];
      89
      90   $Mode = $OptionsInfo{Mode};
      91
      92   print "Generating new $NewFile file...\n";
      93
      94   open NEWFILE, ">$NewFile" or die "Error: Can't open $NewFile: !$ \n";
      95   open FILE, "$File" or die "Error: Can't open $File: $! \n";
      96
      97   while (<FILE>) {
      98     LINE: {
      99       if ($Mode =~ /^Unix$/i) { s/(\r\n)|(\r)|(\n)/\n/g; last LINE; }
     100       if ($Mode =~ /^Windows$/i) { s/(\r\n)|(\r)|(\n)/\r\n/g; last LINE; }
     101       if ($Mode =~ /^Mac$/i) { s/(\r\n)|(\r)|(\n)/\r/g; last LINE; }
     102       $Nothing = 1;
     103     }
     104     print NEWFILE;
     105   }
     106
     107   close NEWFILE;
     108   close FILE;
     109 }
     110
     111 # Retrieve input files info...
     112 sub RetrieveFilesInfo {
     113   my($File, $Index, $FileDir, $FileName, $FileExt, $NewFileName);
     114
     115   %FilesInfo = ();
     116
     117   @{$FilesInfo{FileOkay}} = ();
     118   @{$FilesInfo{OutFile}} = ();
     119
     120   FILELIST: for $Index (0 .. $#FilesList) {
     121     $File = $FilesList[$Index];
     122
     123     $FilesInfo{FileOkay}[$Index] = 0;
     124     $FilesInfo{OutFile}[$Index] = "";
     125
     126     if (!(-e $File)) {
     127       warn "Warning: Ignoring file $File: It doesn't exist\n";
     128       next FILELIST;
     129     }
     130
     131     if (!open FILE, "$File") {
     132       warn "Warning: Ignoring file $File: Couldn't open it: $! \n";
     133       next FILELIST;
     134     }
     135     close FILE;
     136
     137     $FileDir = ""; $FileName = ""; $FileExt = "";
     138     ($FileDir, $FileName, $FileExt) = ParseFileName($File);
     139     $NewFileName = $FileName;
     140     if ($OptionsInfo{OutFileRoot} && (@FilesList == 1)) {
     141       my ($RootFileDir, $RootFileName, $RootFileExt) = ParseFileName($OptionsInfo{OutFileRoot});
     142       if ($RootFileName && $RootFileExt) {
     143         $NewFileName = $RootFileName;
     144       }
     145       else {
     146         $NewFileName = $OptionsInfo{OutFileRoot};
     147       }
     148     }
     149     else {
     150       $NewFileName .= $OptionsInfo{Mode};
     151     }
     152
     153     if ($FileExt) {
     154       $NewFileName .= ".$FileExt";
     155     }
     156
     157     if (!$OptionsInfo{Overwrite}) {
     158       if (-e $NewFileName) {
     159         warn "Warning: Ignoring file $File: New Text file, $NewFileName, already exists\n";
     160         next FILELIST;
     161       }
     162     }
     163     $FilesInfo{FileOkay}[$Index] = 1;
     164     $FilesInfo{OutFile}[$Index] = $NewFileName;
     165   }
     166 }
     167
     168 # Process option values...
     169 sub ProcessOptions {
     170   %OptionsInfo = ();
     171
     172   $OptionsInfo{Mode} = $Options{mode};
     173
     174   $OptionsInfo{OutFileRoot} = $Options{root} ? $Options{root} : undef;
     175   $OptionsInfo{Overwrite} = $Options{overwrite} ? $Options{overwrite} : undef;
     176
     177 }
     178
     179 # Setup script usage  and retrieve command line arguments specified using various options...
     180 sub SetupScriptUsage {
     181
     182   # Retrieve all the options...
     183   %Options = ();
     184   $Options{mode} = "Unix";
     185
     186   if (!GetOptions(\%Options, "help|h", "mode|m=s", "overwrite|o", "root|r=s", "workingdir|w=s")) {
     187     die "\nTo get a list of valid options and their values, use \"$ScriptName -h\" or\n\"perl -S $ScriptName -h\" command and try again...\n";
     188   }
     189   if ($Options{workingdir}) {
     190     if (! -d $Options{workingdir}) {
     191       die "Error: The value specified, $Options{workingdir},  for option \"-w --workingdir\" is not a directory name.\n";
     192     }
     193     chdir $Options{workingdir} or die "Error: Couldn't chdir $Options{workingdir}: $! \n";
     194   }
     195   if ($Options{mode} !~ /^(Unix|Windows|Mac)$/i) {
     196     die "Error: The value specified, $Options{mode}, for option \"-m --mode\" is not valid. Allowed values: Unix, Windows, or Mac\n";
     197   }
     198 }
     199