# HG changeset patch
# User Pascal Bellard <pascal.bellard@slitaz.org>
# Date 1250450454 -7200
# Node ID 329dcaa0bd9b31bc1357cedb254eca0bbe7a2eca
# Parent  ba395fa660a83655fa6669efb13f72bf98397aa3
Add tazlito repack

diff -r ba395fa660a8 -r 329dcaa0bd9b tazlito
--- a/tazlito	Sat Aug 08 10:07:24 2009 +0200
+++ b/tazlito	Sun Aug 16 21:20:54 2009 +0200
@@ -89,6 +89,7 @@
   clean-distro    Remove all files generated by gen-distro.
   check-distro    Help to check if distro is ready to release.
   merge           Merge multiple rootfs into one iso.
+  repack	  Recompress rootfs in iso with maximum ration.
   burn-iso        Burn ISO image to a cdrom using Wodim.\n"
 }
 
@@ -1238,6 +1239,39 @@
 		rm -rf $TMP_DIR
 		;;
 
+	repack)
+		# Repack an iso with maximum lzma compression ratio.
+		#
+
+		ISO=$2
+
+		mkdir -p $TMP_DIR/mnt
+		# Extract filesystems
+		echo -n "Mount $ISO"
+		mount -o loop,ro $ISO $TMP_DIR/mnt 2> /dev/null
+		status || cleanup_merge
+		cp -a $TMP_DIR/mnt $TMP_DIR/iso
+		umount -d $TMP_DIR/mnt
+		
+		for i in $TMP_DIR/iso/boot/rootfs* ; do
+			echo -n "Repack $(basename $i)"
+			(zcat $i || unlzma -c $i || cat $i) \
+				2>/dev/null > $TMP_DIR/rootfs
+			n=20	# 1Mb
+			sz=$(stat -c %s $TMP_DIR/rootfs)
+			while [ $sz -gt 1048576 ]; do
+				n=$(( $n + 1 ))
+				sz=$(( $sz / 2 ))
+			done
+			lzma e $TMP_DIR/rootfs $i -d$n
+			status
+		done
+		
+		echo "Generate $ISO"
+		create_iso $ISO $TMP_DIR/iso
+		rm -rf $TMP_DIR
+		;;
+
 	usage|*)
 		# Clear and print usage also for all unknown commands.
 		#