-#!/bin/sh -e
+#!/usr/bin/perl -w
#
# Compresses files and makes sure that symlinks pointing to the
# compressed files get fixed.
-PATH=debian:$PATH:/usr/lib/debhelper
-. dh_lib
+use Cwd;
+BEGIN { push @INC, "debian", "/usr/lib/debhelper" }
+use Dh_Lib;
+init();
-# Returns a list of all the files that we want to compress,
-# (ignoring any files we were asked to exclude on the command
-# line). Assummes we are already in the temp directory.
-filelist () {
- if [ "$compress" ]; then
- # The config file is a sh script that outputs the files to be compressed
- # (typically using find).
- sh $olddir/$compress 2>/dev/null
- else
- # By default fall back on what the policy manual says to compress.
- find usr/info usr/man usr/X11*/man -type f ! -name "*.gz" 2>/dev/null || true
- find usr/doc -type f \( -size +4k -or -name "changelog*" \) \
- ! -name "*.htm*" ! -name "*.gif" ! -name "*.gz" \
- ! -name "copyright" 2>/dev/null || true
- fi
-}
-
-# Returns a list of all the files we want to compress,
-# after taking command line exclusions into account.
-# Call only if DH_EXCLUDE_GREP is non-empty.
-filelist_excluded () {
- # Use grep -F so we don't have to worry about regexp's.
- (filelist | grep -v -F \
- "`echo "$DH_EXCLUDE_GREP" | tr "|" "\n"`") || true
-}
-
-for PACKAGE in $DH_DOPACKAGES; do
- TMP=`tmpdir $PACKAGE`
- compress=`pkgfile $PACKAGE compress`
+foreach $PACKAGE (@{$dh{DOPACKAGES}}) {
+ $TMP=tmpdir($PACKAGE);
+ $compress=pkgfile($PACKAGE,"compress");
# Run the file name gathering commands from within the directory
# structure that will be effected.
- olddir=`pwd`
- # Can't use doit here, that breaks --no-act mode.
- verbose_echo "cd $TMP"
- cd "$TMP"
+ $olddir=getcwd();
+ chdir($TMP) || error("Can't cd to $TMP: $!");
- # Get the list of files to compress.
- if [ "$DH_EXCLUDE_GREP" ]; then
- files=`filelist_excluded`
- else
- files=`filelist`
- fi
+ # Figure out what files to compress.
+ @files=();
+ # First of all, deal with any files specified right on the command line.
+ if (($PACKAGE eq $dh{FIRSTPACKAGE} || $dh{PARAMS_ALL}) && @ARGV) {
+ push @files,#ARGV;
+ }
+ if ($compress) {
+ # The config file is a sh script that outputs the files to be compressed
+ # (typically using find).
+ push @files, split(/\n/,`sh $olddir/$compress 2>/dev/null`);
+ }
+ else {
+ # By default, fall back to what the policy manual says to compress.
+ push @files, split(/\n/,`
+ find usr/info usr/man usr/X11*/man -type f ! -name "*.gz" 2>/dev/null || true;
+ find usr/doc -type f \\( -size +4k -or -name "changelog*" \\) \\
+ ! -name "*.htm*" ! -name "*.gif" ! -name "*.gz" \\
+ ! -name "copyright" 2>/dev/null || true
+ `);
+ }
- if [ "$files" ]; then
- # This is just a cosmetic fix.
- files=`echo $files | tr "\n" " "`
+ # Exclude files from compression.
+ if (@files && defined($dh{EXCLUDE}) && $dh{EXCLUDE}) {
+ @new=();
+ foreach (@files) {
+ $ok=1;
+ foreach $x (@{$dh{EXCLUDE}}) {
+ if (/\Q$x\E/) {
+ $ok='';
+ last;
+ }
+ }
+ push @new,$_ if $ok;
+ }
+ @files=@new;
+ }
- doit "gzip -f9 $files" || true
- fi
+ # Look for files with hard links. If we are going to compress both,
+ # we can preserve the hard link across the compression and save
+ # space in the end.
+ my @f=();
+ foreach (@files) {
+ ($dev, $inode, undef, $nlink)=stat($_);
+ if ($nlink > 1) {
+ if (! $seen{"$inode.$dev"}) {
+ $seen{"$inode.$dev"}=$_;
+ push @f, $_;
+ }
+ else {
+ # This is a hardlink.
+ $hardlinks{$_}=$seen{"$inode.$dev"};
+ }
+ }
+ else {
+ push @f, $_;
+ }
+ }
- # Change back to old pwd.
- verbose_echo "cd $olddir"
- cd "$olddir"
+ if (@f) {
+ doit("gzip","-9f",@f);
+ }
+
+ # Now change over any files we can that used to be hard links so
+ # they are again.
+ foreach (keys %hardlinks) {
+ # Remove old file.
+ doit("rm","-f","$_");
+ # Make new hardlink.
+ doit("ln","$hardlinks{$_}.gz","$_.gz");
+ }
+
+ chdir($olddir);
# Fix up symlinks that were pointing to the uncompressed files.
- for file in `find $TMP -type l`; do
- DIRECTORY=`expr $file : "\(.*\)/[^/]*"`
- NAME=`expr $file : ".*/\([^/]*\)"`
- LINKVAL=`ls -l $DIRECTORY/$NAME | awk '{ print $11;}'`
- if [ ! -e $DIRECTORY/$LINKVAL -a -f $DIRECTORY/$LINKVAL.gz ]; then
- doit "rm $DIRECTORY/$NAME"
- doit "ln -s $LINKVAL.gz $DIRECTORY/$NAME.gz"
- fi
- done
-done
+ open (FIND,"find $TMP -type l |");
+ while (<FIND>) {
+ chomp;
+ ($directory)=m:(.*)/:;
+ $linkval=readlink($_);
+ if (! -e "$directory/$linkval" && -e "$directory/$linkval.gz") {
+ doit("rm","-f",$_);
+ doit("ln","-sf","$linkval.gz","$_.gz");
+ }
+ }
+}
projects / debhelper.git / blobdiff