       1 #!/usr/bin/perl -w
       2 #
       3 # $RCSfile: ModifyNewLineChar.pl,v $
       4 # $Date: 2015/02/28 20:46:20 $
       5 # $Revision: 1.26 $
       6 #
       7 # Author: Manish Sud <msud@san.rr.com>
       8 #
       9 # Copyright (C) 2015 Manish Sud. All rights reserved.
      10 #
      11 # This file is part of MayaChemTools.
      12 #
      13 # MayaChemTools is free software; you can redistribute it and/or modify it under
      14 # the terms of the GNU Lesser General Public License as published by the Free
      15 # Software Foundation; either version 3 of the License, or (at your option) any
      16 # later version.
      17 #
      18 # MayaChemTools is distributed in the hope that it will be useful, but without
      19 # any warranty; without even the implied warranty of merchantability of fitness
      20 # for a particular purpose.  See the GNU Lesser General Public License for more
      21 # details.
      22 #
      23 # You should have received a copy of the GNU Lesser General Public License
      24 # along with MayaChemTools; if not, see <http://www.gnu.org/licenses/> or
      25 # write to the Free Software Foundation Inc., 59 Temple Place, Suite 330,
      26 # Boston, MA, 02111-1307, USA.
      27 #
      28
      29 use strict;
      30 use FindBin; use lib "$FindBin::Bin/../lib";
      31 use Getopt::Long;
      32 use File::Basename;
      33 use Text::ParseWords;
      34 use Benchmark;
      35 use FileUtil;
      36 use TextUtil;
      37
      38 my($ScriptName, %Options, $StartTime, $EndTime, $TotalTime);
      39
      40 # Autoflush STDOUT
      41 $| = 1;
      42
      43 # Starting message...
      44 $ScriptName = basename $0;
      45 print "\n$ScriptName:Starting...\n\n";
      46 $StartTime = new Benchmark;
      47
      48 # Get the options and setup script...
      49 SetupScriptUsage();
      50 if ($Options{help} || @ARGV < 1) {
      51   die GetUsageFromPod("$FindBin::Bin/$ScriptName");
      52 }
      53
      54 my( @FilesList);
      55 @FilesList = ExpandFileNames(\@ARGV, "");
      56
      57 # Process options...
      58 print "Processing options...\n";
      59 my(%OptionsInfo);
      60 ProcessOptions();
      61
      62 print "Checking input file(s)...\n";
      63 my(%FilesInfo);
      64 RetrieveFilesInfo();
      65
      66 # Generate output files...
      67 my($FileIndex);
      68 if (@FilesList > 1) {
      69   print "\nProcessing files...\n";
      70 }
      71 for $FileIndex (0 .. $#FilesList) {
      72   if ($FilesInfo{FileOkay}[$FileIndex]) {
      73     print "\nProcessing file $FilesList[$FileIndex]...\n";
      74     ModifyNewLineChar($FileIndex);
      75   }
      76 }
      77 print "\n$ScriptName:Done...\n\n";
      78
      79 $EndTime = new Benchmark;
      80 $TotalTime = timediff ($EndTime, $StartTime);
      81 print "Total time: ", timestr($TotalTime), "\n";
      82
      83 ###############################################################################
      84
      85 # Modify new line characters...
      86 sub ModifyNewLineChar {
      87   my($Index) = @_;
      88   my($File, $NewFile, $Mode, $Nothing);
      89
      90   $File = $FilesList[$Index];
      91   $NewFile = $FilesInfo{OutFile}[$Index];
      92
      93   $Mode = $OptionsInfo{Mode};
      94
      95   print "Generating new $NewFile file...\n";
      96
      97   open NEWFILE, ">$NewFile" or die "Error: Can't open $NewFile: !$ \n";
      98   open FILE, "$File" or die "Error: Can't open $File: $! \n";
      99
     100   while (<FILE>) {
     101     LINE: {
     102       if ($Mode =~ /^Unix$/i) { s/(\r\n)|(\r)|(\n)/\n/g; last LINE; }
     103       if ($Mode =~ /^Windows$/i) { s/(\r\n)|(\r)|(\n)/\r\n/g; last LINE; }
     104       if ($Mode =~ /^Mac$/i) { s/(\r\n)|(\r)|(\n)/\r/g; last LINE; }
     105       $Nothing = 1;
     106     }
     107     print NEWFILE;
     108   }
     109
     110   close NEWFILE;
     111   close FILE;
     112 }
     113
     114 # Retrieve input files info...
     115 sub RetrieveFilesInfo {
     116   my($File, $Index, $FileDir, $FileName, $FileExt, $NewFileName);
     117
     118   %FilesInfo = ();
     119
     120   @{$FilesInfo{FileOkay}} = ();
     121   @{$FilesInfo{OutFile}} = ();
     122
     123   FILELIST: for $Index (0 .. $#FilesList) {
     124     $File = $FilesList[$Index];
     125
     126     $FilesInfo{FileOkay}[$Index] = 0;
     127     $FilesInfo{OutFile}[$Index] = "";
     128
     129     if (!(-e $File)) {
     130       warn "Warning: Ignoring file $File: It doesn't exist\n";
     131       next FILELIST;
     132     }
     133
     134     if (!open FILE, "$File") {
     135       warn "Warning: Ignoring file $File: Couldn't open it: $! \n";
     136       next FILELIST;
     137     }
     138     close FILE;
     139
     140     $FileDir = ""; $FileName = ""; $FileExt = "";
     141     ($FileDir, $FileName, $FileExt) = ParseFileName($File);
     142     $NewFileName = $FileName;
     143     if ($OptionsInfo{OutFileRoot} && (@FilesList == 1)) {
     144       my ($RootFileDir, $RootFileName, $RootFileExt) = ParseFileName($OptionsInfo{OutFileRoot});
     145       if ($RootFileName && $RootFileExt) {
     146         $NewFileName = $RootFileName;
     147       }
     148       else {
     149         $NewFileName = $OptionsInfo{OutFileRoot};
     150       }
     151     }
     152     else {
     153       $NewFileName .= $OptionsInfo{Mode};
     154     }
     155
     156     if ($FileExt) {
     157       $NewFileName .= ".$FileExt";
     158     }
     159
     160     if (!$OptionsInfo{Overwrite}) {
     161       if (-e $NewFileName) {
     162         warn "Warning: Ignoring file $File: New Text file, $NewFileName, already exists\n";
     163         next FILELIST;
     164       }
     165     }
     166     $FilesInfo{FileOkay}[$Index] = 1;
     167     $FilesInfo{OutFile}[$Index] = $NewFileName;
     168   }
     169 }
     170
     171 # Process option values...
     172 sub ProcessOptions {
     173   %OptionsInfo = ();
     174
     175   $OptionsInfo{Mode} = $Options{mode};
     176
     177   $OptionsInfo{OutFileRoot} = $Options{root} ? $Options{root} : undef;
     178   $OptionsInfo{Overwrite} = $Options{overwrite} ? $Options{overwrite} : undef;
     179
     180 }
     181
     182 # Setup script usage  and retrieve command line arguments specified using various options...
     183 sub SetupScriptUsage {
     184
     185   # Retrieve all the options...
     186   %Options = ();
     187   $Options{mode} = "Unix";
     188
     189   if (!GetOptions(\%Options, "help|h", "mode|m=s", "overwrite|o", "root|r=s", "workingdir|w=s")) {
     190     die "\nTo get a list of valid options and their values, use \"$ScriptName -h\" or\n\"perl -S $ScriptName -h\" command and try again...\n";
     191   }
     192   if ($Options{workingdir}) {
     193     if (! -d $Options{workingdir}) {
     194       die "Error: The value specified, $Options{workingdir},  for option \"-w --workingdir\" is not a directory name.\n";
     195     }
     196     chdir $Options{workingdir} or die "Error: Couldn't chdir $Options{workingdir}: $! \n";
     197   }
     198   if ($Options{mode} !~ /^(Unix|Windows|Mac)$/i) {
     199     die "Error: The value specified, $Options{mode}, for option \"-m --mode\" is not valid. Allowed values: Unix, Windows, or Mac\n";
     200   }
     201 }
     202