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New perl script to sync up two CVS trees
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sfraser%netscape.com
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290
build/file_migrate.pl
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290
build/file_migrate.pl
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#!perl -w
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# This script allows you to copy changes between two CVS trees. It detects
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# modified files by looking at modification dates and the CVS Entries file,
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# and copies such files over to the destination tree.
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#
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# Files are only copied if the CVS version of the file is identical in both
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# trees. If the destination file is modified, it is backed up.
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#
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# Files are copied in their entirety; no diffing is done.
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#
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# To use this on your machine/platform, adjust the following:
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#
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# 1. $src_tree and $dest_tree paths, using platform directory separators.
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#
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# 2. Change $dirsep to the directory separator on your platform.
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#
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# 3. Set $dst_linebreaks to be the linebreaks you want in copied
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# files. For example, if copying to Windows tree, change this
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# to CRLF by commenting all but the 'DOS' line.
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#
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#
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# To use this script, both src and dest trees must be visible to
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# the OS on which the script is being run. So to copy between
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# machines, you'll have to use filesharing.
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#
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# First version: Simon Fraser <sfraser@netscape.com>
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#
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#
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use File::stat;
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use Time::Local;
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# change for your platform
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$dirsep = ":";
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# $dst_linebreaks = pack("cc", 13); # Mac
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$dst_linebreaks = pack("cc", 13, 10); # DOS
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# $dst_linebreaks = pack("cc", 10); # UNIX
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#change for your src and dest trees
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$src_tree = "Development:Mozilla dev:src:mozilla:editor";
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$dest_tree = "src:mozilla:editor";
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#//--------------------------------------------------------------------------------------------------
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#// _copyFile. Copy file from src to dest, converting linebreaks if necessary
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#//--------------------------------------------------------------------------------------------------
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sub _copyFile($;$;$;$)
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{
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my($srcdir, $destdir, $file, $backup) = @_;
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my($srcfile) = $srcdir.$dirsep.$file;
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my($dstfile) = $destdir.$dirsep.$file;
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if ($backup)
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{
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my($counter) = 0;
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while (-f $dstfile."-".$counter)
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{
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$counter ++;
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}
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rename($dstfile, $dstfile."-".$counter) or die "Failed to rename file\n";
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}
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print "Copying $file over to dest\n";
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my($newdest) = $dstfile."_temp";
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open(SRCFILE, "< $srcfile") or die "Can't open source file $srcfile\n";
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open(NEWDEST, "> $newdest") or die "Can't open dest file $newdest\n";
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while (<SRCFILE>)
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{
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chomp($_);
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print NEWDEST $_.$dst_linebreaks;
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}
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close(SRCFILE);
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close(NEWDEST);
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if (!$backup) {
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unlink($dstfile) or die "Failed to remove $dstfile\n";
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}
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rename($newdest, $dstfile) or die "Failed to rename $newdest\n";
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}
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#//--------------------------------------------------------------------------------------------------
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#// _readCVSInfo. Suck in the CVS info from the Entries file
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#//--------------------------------------------------------------------------------------------------
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sub _readCVSInfo($)
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{
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my($cvsDir) = @_;
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my($entries_file_name) = $cvsDir.$dirsep."CVS".$dirsep."Entries";
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# print "Reading $entries_file_name\n";
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open(ENTRIES, $entries_file_name) || die "Could not open file $entries_file_name";
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my(%cvs_entries);
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# Read in the path if available
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while (defined ($line = <ENTRIES>))
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{
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chomp($line);
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#parse out the line. Format is:
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# files: /filename/version/date/options/tag
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# dirs: D/dirname////
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# dir? D
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if ($line =~ /^\/(.+)\/(.+)\/(.+)\/(.*)\/(.*)$/)
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{
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my($filename) = $1;
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my($version) = $2;
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my($date) = $3;
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my($options) = $4;
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my($tag) = $5;
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my(%cvs_file) = (
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"version" => $version,
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"date" => $date,
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"options" => $options,
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"tag" => $tag
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);
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# print $filename." ".$version." ".$date." ".$options." ".$tag."\n";
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$cvs_entries{$filename} = \%cvs_file;
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}
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}
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close ENTRIES;
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return %cvs_entries;
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}
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#//--------------------------------------------------------------------------------------------------
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#// _fileIsModified. compare mod date with CVS entries to see if a file is modified
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#//--------------------------------------------------------------------------------------------------
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sub _fileIsModified($;$;$)
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{
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my($entries, $dir, $file) = @_;
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my($abs_file) = $dir.$dirsep.$file;
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if (exists($entries->{$file}))
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{
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my($date) = $entries->{$file}->{"date"};
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# stat the file to get its date
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my($file_data) = stat($abs_file) || die "Could not stat $file\n";
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my($mod_string) = scalar(gmtime($file_data->mtime));
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return ($mod_string ne $date);
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}
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else
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{
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return 0;
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}
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}
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#//--------------------------------------------------------------------------------------------------
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#// _processFile. args: entries hash, dir, filename
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#//--------------------------------------------------------------------------------------------------
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sub _processFile($;$;$;$;$)
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{
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my($src_entries, $dest_entries, $srcdir, $destdir, $file) = @_;
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my($abs_file) = $srcdir.$dirsep.$file;
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if (exists($src_entries->{$file}))
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{
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my($file_entry) = $src_entries->{$file};
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my($version) = $file_entry->{"version"};
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if (_fileIsModified($src_entries, $srcdir, $file))
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{
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my($rel_file) = $abs_file;
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$rel_file =~ s/^$src_tree//;
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# print "¥ÊFile $rel_file is modified\n";
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# check CVS version in dest
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my($dest_entry) = $dest_entries->{$file};
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if ($dest_entry)
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{
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my($dest_version) = $dest_entry->{"version"};
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my($versions_match) = ($version == $dest_version);
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my($dest_modified) = _fileIsModified($dest_entries, $destdir, $file);
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if ($versions_match)
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{
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# ok, we can copy the file over now, backing up dest if it is modified
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_copyFile($srcdir, $destdir, $file, $dest_modified);
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}
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else
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{
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print "File $rel_file is version $version in the src tree, but $dest_version in dest. This file will not be copied.\n";
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}
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}
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else
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{
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print "No CVS entry found in destination tree for $rel_file\n";
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}
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}
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}
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else
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{
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print "No entry for file $file\n";
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}
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}
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#//--------------------------------------------------------------------------------------------------
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#// _traverseDir. Traverse one dir, recurse for each found dir.
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#//--------------------------------------------------------------------------------------------------
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sub _traverseDir($;$)
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{
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my($srcdir, $destdir) = @_;
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opendir(DIR, $srcdir) or die "Cannot open dir $srcdir\n";
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my @files = readdir(DIR);
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closedir DIR;
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# suck in the CVS info for this dir, if there is a CVS dir
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unless (-e $srcdir.$dirsep."CVS:Entries" && -e $destdir.$dirsep."CVS:Entries") {
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print "$srcdir is not a CVS directory in both source and dest\n";
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return;
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}
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print " Doing $srcdir\n";
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my(%src_entries) = _readCVSInfo($srcdir);
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my(%dest_entries) = _readCVSInfo($destdir);
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my $file;
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foreach $file (@files)
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{
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my $filepath = $srcdir.$dirsep.$file;
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if (-d $filepath)
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{
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if ($file ne "CVS") # ignore 'CVS' dirs
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{
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# print "Going into $filepath\n";
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_traverseDir($filepath, $destdir.$dirsep.$file);
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}
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}
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else
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{
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# process this file
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_processFile(\%src_entries, \%dest_entries, $srcdir, $destdir, $file);
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}
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}
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}
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#//--------------------------------------------------------------------------------------------------
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#// MigrateChanges
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#//--------------------------------------------------------------------------------------------------
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sub MigrateChanges($;$)
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{
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my($srcdir, $destdir) = @_;
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# Check that src and dest exist
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if (! -d $srcdir) {
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die "Source directory $srcdir does not exist\n";
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}
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if (! -d $destdir) {
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die "Dest directory $destdir does not exist\n";
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}
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print "---------------------------------------------------------\n";
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print "Migrating changes from\n $srcdir\nto\n $destdir\n";
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print "---------------------------------------------------------\n";
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_traverseDir($srcdir, $destdir);
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print "---------------------------------------------------------\n";
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}
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MigrateChanges($src_tree, $dest_tree);
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