From 7d229ed1916b4ac20cfc8cbc9f8ca31edfc5b24c Mon Sep 17 00:00:00 2001
From: heck <heck@pep.foundation>
Date: Sat, 27 Aug 2022 23:15:04 +0200
Subject: [PATCH] improve renamer.pl

---
 scripts/renamer.pl | 110 +++++++++++++++++++++++++--------------------
 1 file changed, 61 insertions(+), 49 deletions(-)

diff --git a/scripts/renamer.pl b/scripts/renamer.pl
index 14fbea0..d9069eb 100755
--- a/scripts/renamer.pl
+++ b/scripts/renamer.pl
@@ -1,15 +1,18 @@
 #!/usr/bin/perl
 
 my $help = <<'END_HELP';
- Sampling tool File Renamer
- usage: renamer.pl DIR SEARCHREGEX REPLACEREGEX DOIT
+ File Renamer
+ usage: renamer.pl DIR SEARCHREGEX REPLACEREGEX [--doit]
 
  for every regular file in DIR, sorted by mtime,
  replaces the SEARCHREGEX with REPLACEREGEX in every filename.
- Does NOT rename anything unless DOIT!
+ if the new name clashes with an already existing file, a count
+ will be appended before the first dot.
+ Does NOT rename anything unless --doit
 
  Special Variables are:
  %NR% - the index number for the file with the current sorting
+ %MTIME% - the modification time of the file
 
  no captures support in regex :(
 END_HELP
@@ -18,87 +21,96 @@ END_HELP
 use strict;
 use warnings;
 
-use Data::Dumper qw(Dumper);
+use Data::Dumper;
 use POSIX qw(strftime);
 use Cwd;
 use File::stat;
 
-my $dir = "-?";
-$dir = $ARGV[0];
+# print(Dumper(@ARGV) . "\n");
+# print("size:" . int(@ARGV) . "\n");
+
+if (int(@ARGV) < 3) {
+    usage();
+}
+
+my $dir = $ARGV[0];
 my $regexSearch = $ARGV[1];
 my $regexReplace = $ARGV[2];
-my $reallyDoIt = $ARGV[3];
+my $reallyDoIt = $ARGV[3] || 0;
 
-if ($dir eq "-?") {
-  usage();
+if (!-d $dir) {
+    print("$dir - no such dir" . "\n");
+    exit(-1);
 }
 
-if(!$dir) {
-  print "Error: Need a directory.\n";
-  die "\n";
-}
-if(!$regexSearch) {
-  print "Error: Need a search regex.\n";
-  die "\n";
-}
-if(!$regexReplace) {
-  print "Error: Need a replace regex.\n\n";
-  die "\n";
+if ($reallyDoIt eq "--doit") {
+    $reallyDoIt = 1;
+} else {
+    print("Dry run. Not renaming anything." . "\n");
 }
 
 chdir($dir) || die "FATAL: cant chdir";
 
-print getcwd()."\n";
-
-opendir( DIR, getcwd() );
+opendir(DIR, getcwd());
 my @files = readdir(DIR);
 closedir(DIR);
 
 #filter out dirs
 my @filesNoDir;
 foreach (@files) {
-  if(! -d $_) {
-    push(@filesNoDir,$_);
-  }
+    if (!-d $_) {
+        push(@filesNoDir, $_);
+    }
 }
 
 @files = @filesNoDir;
 
-my @sorted_files = sort { stat($a)->mtime <=> stat($b)->mtime } @files;
+my @sorted_files = sort {stat($a)->mtime <=> stat($b)->mtime} @files;
 
 my $fname = "";
 my $fstat = "";
-my $mtime = "";
+my $mtime_display = "";
+my $mtime_filename = "";
 
 my $fname_new = "";
 my $counter = 1;
 my $regexReplaceNew = "";
 my $counterFmt;
 for (@sorted_files) {
-  $fname = $_;
-  $fstat = stat($_);
-  $mtime =  strftime('%Y/%m/%d %H:%M:%S',localtime($fstat->mtime));
-
-  $regexReplaceNew = $regexReplace;
-  $counterFmt = sprintf("%03s",$counter);
-  $regexReplaceNew =~ s/%NR%/$counterFmt/g;
-
-  $fname_new = $fname;
-  $fname_new =~ s/$regexSearch/$regexReplaceNew/;
-#  $fname_new =~ s/(.*?)\s1-/%NR%_$1/;
-
-  printf "%-40s%-40s%-20s\n",$fname_new,$fname,$mtime;
-
-  if($reallyDoIt) {
-    rename($fname,$fname_new);
-  }
-
-  $counter++;
+    $fname = $_;
+    $fstat = stat($_);
+    $mtime_display = strftime('%Y/%m/%d %H:%M:%S', localtime($fstat->mtime));
+    $mtime_filename = strftime('%y%m%d_%H%M%S', localtime($fstat->mtime));
+
+    $regexReplaceNew = $regexReplace;
+    $counterFmt = sprintf("%03s", $counter);
+    $regexReplaceNew =~ s/%NR%/$counterFmt/g;
+    $regexReplaceNew =~ s/%MTIME%/$mtime_filename/g;
+
+    $fname_new = $fname;
+    $fname_new =~ s/$regexSearch/$regexReplaceNew/;
+    #  $fname_new =~ s/(.*?)\s1-/%NR%_$1/;
+
+    my $fname_result = $fname_new;
+
+    my $count_clash = 0;
+    while(-e $fname_result) {
+        my $count_clash_fmt = sprintf("%02s", $count_clash);
+        $fname_result = $fname_new =~ s/(.*?)\./$1_$count_clash_fmt./r;
+        $count_clash++;
+    }
+
+    printf "%-60s%-60s%-20s\n", $fname_result, $fname, $mtime_display;
+    if ($reallyDoIt) {
+        rename($fname, $fname_result);
+    }
+
+    $counter++;
 }
 
 
 
 sub usage {
-  print $help;
-  die "\n";
+    print $help;
+    die "\n";
 }