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Bug#35040: dpkg: Add symlink support to dpkg-name

Package: dpkg
Severity: whishlist

The following patch is useful to recover broken CDs (with names
truncated...) by creating a forest of symlinks. dpkg-name with the -k
switch creates a symlink instaed of moving the file.
Example usage:

cd /cdrom
mkdir /forest

find ./dists -type d | while read dir; do mkdir -p /forest/$dir; done

find ./ -name \*.deb | while read name; do
        dpkg-name -k -s /forest/`dirname $name` $name

We still need to copy Packages by hand:-)


--- dpkg-name.old	Thu Mar 25 11:18:54 1999
+++ dpkg-name	Thu Mar 25 11:32:27 1999
@@ -37,6 +37,7 @@
   according to the ``underscores convention''.
   -a|--no-architecture  No architecture part in filename
   -o|--overwrite        Overwrite if file exists
+  -k|--symlink          Don't create a new file, but a symlink
   -s|--subdir [dir]     Move file into subdir (Use with care)
   -c|--create-dir       Create target dir if not there (Use with care)
   -h|--help|-v|--version|-l|--license  Show help/version/license"
@@ -137,13 +138,19 @@
 		newname=`echo $dir/$name`;
+		if [ x$symlink = x1 ];
+		then
+			command="ln -s --"
+		else
+			command="mv --"
+		fi
 		if [ $newname -ef "$1" ]; # same device and inode numbers
 			stderr "skipping \`"$1"'";
 		elif [ -f $newname -a -z "$overwrite" ];
 			stderr "can't move \`"$1"' to existing file";
-		elif `mv -- "$1" $newname`;
+		elif `$command "$1" $newname`;
 			echo "moved \``basename "$1"`' to \`$newname'";
@@ -173,6 +180,7 @@
 		--create-dir|-c) createdir=1;;
 		--subdir|-s) subdirset=1;;
 		--overwrite|-o) overwrite=1 ;;
+		--symlink|-k) symlink=1 ;;
 		--no-architecture|-a) noarchitecture=1 ;;
 		--) shift; 
 			for arg 

-- System Information
Debian Release: 2.1
Kernel Version: Linux bacco 2.2.3 #1 Tue Mar 9 12:09:14 CET 1999 i686 unknown

Versions of the packages dpkg depends on:
ii  libc6  GNU C Library: shared libraries
ii  libncurses4     4.2-3          Shared libraries for terminal handling
ii  libstdc++2.9    2.91.60-5      The GNU stdc++ library (egcs version)

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