dupemerge: only report '.' for non-trivial merges

[dupemerge] / faster-dupemerge

diff --git a/faster-dupemerge b/faster-dupemerge
index be6e29bc678bd78aec0d92fef00f030e8d829ef3..91138c8713d8d79c4f730a743eec303ce07097c3 100755 (executable)
--- a/faster-dupemerge
+++ b/faster-dupemerge
@@ -87,6 +87,7 @@ my $collapse_timestamp = 0;
 my $collapse_zero = 0;
 my $skip_compares = 0;
 my $skip_hashes = 0;
+my $progress = 0;
 my $verbose = 0;
 my $debug = 0;
 my $dry_run = 0;
@@ -102,6 +103,7 @@ sub digest {
        if ($skip_hashes) {
                return "SKIPPING HASHES";
        } else {
+               print STDERR 'H' if $progress;
                my $digest = &really_digest($filename);
                $hash_bytes += -s $filename;
                $hash_files++;
@@ -132,24 +134,33 @@ hard links).
         --debug         show all steps in duplication discovery process
                         (implies --verbose)
 
-       --dry-run       do not lock files or make changes to filesystem
+        --dry-run       do not lock files or make changes to filesystem
 
         --find          pass next options (up to --) to find command
 
-       --humane        human-readable statistics (e.g. 1 048 576)
+        --humane        human-readable statistics (e.g. 1 048 576)
 
         --lock FILE     exit immediately (status 10) if unable to obtain a 
                         flock(LOCK_EX|LOCK_NB) on FILE
 
-       --lock-rm       remove lock file at exit
+        --lock-rm       remove lock file at exit
+
+        --progress      output single-character progress indicators:
+                        C - compare
+                        H - hash
+                        L - link(2)
+                        R - rename(2)
+                        S, s - lstat(2) (see source for details)
+                        U - unlink(2)
+                        . - all inodes with similar attributes done
 
         --sort          pass next options (up to --) to sort command
 
         --timestamps    mtime may be different for identical files
 
-       --skip-compare  skip byte-by-byte file comparisons
+        --skip-compare  skip byte-by-byte file comparisons
 
-       --skip-hash     skip calculation of hash function on files
+        --skip-hash     skip calculation of hash function on files
 
         --trust         old name for --skip-compare
                         (trust the hash function)
@@ -172,6 +183,8 @@ while ($#ARGV >= 0) {
                $skip_compares = 1;
        } elsif ($arg eq '--skip-hash') {
                $skip_hashes = 1;
+       } elsif ($arg eq '--progress') {
+               $progress = 1;
        } elsif ($arg eq '--verbose') {
                $verbose = 1;
        } elsif ($arg eq '--lock-rm') {
@@ -269,6 +282,7 @@ sub link_files {
 
        my $quoted_from = tick_quote($from);
        my $quoted_to = tick_quote($to);
+       print STDERR "\n" if $progress;
        print STDERR "ln -f $quoted_from $quoted_to\n";
 
        return if $dry_run;
@@ -279,10 +293,13 @@ sub link_files {
        $inode_base =~ s:^.*/::os;
        my $tmp_to = File::Temp::tempnam($inode_dir, ".$inode_base.");
        print STDERR "\tlink: $from -> $tmp_to\n" if $debug;
+       print STDERR 'L' if $progress;
        link($from, $tmp_to) or die "link: $from -> $tmp_to: $!";
        print STDERR "\trename: $tmp_to -> $to\n" if $debug;
+       print STDERR 'R' if $progress;
        unless (rename($tmp_to, $to)) {
                my $saved_bang = $!;
+               print STDERR 'U' if $progress;
                unlink($tmp_to) or warn "unlink: $tmp_to: $!";  # Try, possibly in vain, to clean up
                die "rename: $tmp_to -> $from: $saved_bang";
        }
@@ -358,6 +375,7 @@ link_start:
 incumbent_file:
 
                                        foreach my $incumbent_file (@incumbent_names) {
+                                               print STDERR 'S' if $progress;
                                                my ($incumbent_dev,$incumbent_ino,$incumbent_mode,$incumbent_nlink,$incumbent_uid,$incumbent_gid,$incumbent_rdev,$incumbent_size,$incumbent_atime,$incumbent_mtime,$incumbent_ctime,$incumbent_blksize,$incumbent_blocks) = lstat($incumbent_file);
                                                print STDERR "\t\tINCUMBENT dev=$incumbent_dev ino=$incumbent_ino mode=$incumbent_mode nlink=$incumbent_nlink uid=$incumbent_uid gid=$incumbent_gid rdev=$incumbent_rdev size=$incumbent_size atime=$incumbent_atime mtime=$incumbent_mtime ctime=$incumbent_ctime blksize=$incumbent_blksize blocks=$incumbent_blocks _=$incumbent_file\n" if $debug;
 
@@ -378,6 +396,7 @@ incumbent_file:
 candidate_file:
 
                                                foreach my $candidate_file (@candidate_names) {
+                                                       print STDERR 's' if $progress;
                                                        my ($candidate_dev,$candidate_ino,$candidate_mode,$candidate_nlink,$candidate_uid,$candidate_gid,$candidate_rdev,$candidate_size,$candidate_atime,$candidate_mtime,$candidate_ctime,$candidate_blksize,$candidate_blocks) = lstat($candidate_file);
                                                        print STDERR "\t\t\tCANDIDATE dev=$candidate_dev ino=$candidate_ino mode=$candidate_mode nlink=$candidate_nlink uid=$candidate_uid gid=$candidate_gid rdev=$candidate_rdev size=$candidate_size atime=$candidate_atime mtime=$candidate_mtime ctime=$candidate_ctime blksize=$candidate_blksize blocks=$candidate_blocks _=$candidate_file\n" if $debug;
 
@@ -409,6 +428,7 @@ candidate_file:
                                                                        my $quoted_incumbent_file = tick_quote($incumbent_file);
                                                                        my $quoted_candidate_file = tick_quote($candidate_file);
                                                                        print STDERR "cmp $quoted_incumbent_file $quoted_candidate_file\n" if $debug;
+                                                                       print STDERR 'C' if $progress;
                                                                        if (compare($incumbent_file, $candidate_file)) {
                                                                                $compare_differences++;
                                                                                $identical = 0;
@@ -542,6 +562,7 @@ candidate_file:
                        delete $inode_to_file_name{$candidate};
                }
        }
+       print STDERR '.' if $progress;
 
 end_merge: