#!/bin/bash
# A script to generate woof-CE patches against a running puppy (run without
# any arguments)  or the puppy.sfs (run with the 'sfs' argument).

setglobal Version = '0.7'

source /etc/DISTRO_SPECS
source /etc/rc.d/PUPSTATE

# Check if we are good to run
if test $[which git] = "" {
 Xdialog --title "Error" --msgbox \
 "Please install the devx sfs or just git from the repo." 0 0
 exit 1
}
setglobal WDIR = $[pwd] # Should be just above your freshly cloned woof-CE git
if test ! -d $WDIR/woof-CE {
 # Check if script was started by "dropping" a file on it with ROX
 setglobal SCRIPT_PATH = $[realpath $0]
 if test $(SCRIPT_PATH%/woof-CE/ztools/patch-generator.sh) != $SCRIPT_PATH -a $1 != '' {
  setglobal WDIR = $(SCRIPT_PATH%/woof-CE/ztools/patch-generator.sh)
  cd $WDIR
 } else {
  Xdialog --title "Error" --msgbox \
  "This script should be in the same folder as the woof-CE git folder" 0 0
  exit 1
 }
}
setglobal GIT_BRANCH = $[cut -f3 -d'/' $WDIR/woof-CE/.git/HEAD]
if test ! $GIT_BRANCH {
 Xdialog --title "Error" --msgbox \
 "The woof-CE folder is not a git repo. Please clone the woof-CE git" 0 0
 exit 1
}
if test $GIT_BRANCH != "testing" -a $GIT_BRANCH != "rationalise" {
 Xdialog --title "Error" --msgbox \
 "Your woof-CE repo is not in the testing or rationalise branch. Please run 'git checkout testing' or 'git checkout rationalise'" 0 0
 exit 1
}
if test $GIT_BRANCH = "testing" {
 setglobal GIT_HEAD = $[cut -c 1-6 $WDIR/woof-CE/.git/refs/heads/testing]
 setglobal REMOTE_HEAD = $[git ls-remote https://github.com/puppylinux-woof-CE/woof-CE.git |
 grep 'refs/heads/testing' | cut -c 1-6]
} elif test $GIT_BRANCH = "rationalise" {
 setglobal GIT_HEAD = $[cut -c 1-6 $WDIR/woof-CE/.git/refs/heads/rationalise]
 setglobal REMOTE_HEAD = $[git ls-remote https://github.com/puppylinux-woof-CE/woof-CE.git |
 grep 'refs/heads/rationalise' | cut -c 1-6]
}
if test $REMOTE_HEAD != $GIT_HEAD {
 Xdialog --title "Error" --msgbox \
 "Your local repo is not in sysnc with the remote. Please run 'git pull --all'" 0 0
 exit 1
}

if test $1 = "sfs" -a $PUPMODE = "2" {
 Xdialog --title "Error" --msgbox \
 "There is no pup.sfs in full installs. Please run without the 'sfs' argument" 0 0
 exit 1
}
# Make the patches
test $BUILD_FROM_WOOF && setglobal FROMWOOF = "_$[echo $BUILD_FROM_WOOF | cut -f 2 -d ';' | cut -c 1-6]"
match $1 {
 with sfs setglobal COMP_DIR = '/initrd/pup_ro2'
      setglobal PATCHES = "woof_"$GIT_BRANCH""$GIT_HEAD"_patches_to_"$DISTRO_FILE_PREFIX"-"$DISTRO_VERSION"_sfs"$FROMWOOF""
 
 with '' setglobal COMP_DIR = ''
    setglobal PATCHES = "woof_"$GIT_BRANCH""$GIT_HEAD"_patches_to_"$DISTRO_FILE_PREFIX"-"$DISTRO_VERSION""$FROMWOOF""
 
 with * if test ! -f $1 {
     echo "No such file: $1"
     Xdialog --title "Error" --msgbox "No such file: $1" 0 0
     exit 1
    } elif test $[expr $1 : '.*\(woof-out\)] = '' {
     echo "File must exist in woof-out_*"
     Xdialog --title "Error" --msgbox "File must exist in woof-out_*" 0 0
     exit 1
    }
    mkdir -p $WDIR/patches
    cd $WDIR/woof-CE/woof-code
    setglobal WOOFOUT_DIR = $[expr $1 : '.*\(woof-out[^/]*\)]
    setglobal FILE = $[expr $1 : '.*woof-out[^/]*/\(.*\)]
    echo "Making patch from $FILE"
    diff -u -N $FILE ../../$WOOFOUT_DIR/$FILE > $WDIR/patches/$[basename $FILE].patch
    cd $WDIR
    Xdialog --title "Finished" --msgbox "Made patch from $FILE \n \
It can be found in \n \
$WDIR/patches/" 0 0
    exit
 
}
mkdir -p $WDIR/$PATCHES
rm -rf $WDIR/$PATCHES/*
setglobal DIRS = 'rootfs-skeleton'
for i in [$[ls woof-CE/woof-code/rootfs-packages/]]
{
 setglobal DIRS = ""$DIRS rootfs-packages/$i""
}
for D in [$DIRS]
{
 setglobal FOLDER = "woof-CE/woof-code/$D"
 cd $WDIR/$FOLDER
 for f in [$[find ./ -type f]]
 {
 test -f $COMP_DIR/$f && test $[diff -u -N $f $COMP_DIR/$f] != "" \
  && diff -u -N $f $COMP_DIR/$f > $WDIR/$PATCHES/$[basename $f].patch
 }
 #exit 0 #Uncomment to check if compared correctly
 cd $WDIR/$PATCHES
 setglobal DS = $[echo $D | sed 's/\//\\\//]
 sed -i "s/\-\-\-\ \.\//\-\-\-\ a\/woof\-code\/$DS\//" *
 if test $1 = "sfs" {
  sed -i "s/\+\+\+\ \/initrd\/pup_ro2\/\.\//\+\+\+\ b\/woof\-code\/$DS\//" *
 } else {
  sed -i "s/\+\+\+\ \/\.\//\+\+\+\ b\/woof\-code\/$DS\//" *
 }
}
# check init
setglobal INITPATH = $[echo $PUPSFS | cut -f 2 -d '/' | grep -v sfs]
mkdir -p /tmp/initfs
cd /tmp/initfs
gunzip -c /mnt/home/$INITPATH/initrd.gz | cpio -i
cd $WDIR/woof-CE
diff -u initrd-progs/0initrd/init /tmp/initfs/init > $WDIR/$PATCHES/init.patch
sed -i "s/\-\-\-\ /\-\-\-\ a\//" $WDIR/$PATCHES/init.patch
sed -i "s/\+\+\+\ \/tmp\/initfs/\+\+\+\ b\/initrd\-progs\/0initrd/" $WDIR/$PATCHES/init.patch
rm -rf /tmp/initfs
# Move some patches to folders for easy reviewing
cd $WDIR/$PATCHES
mkdir binary_files SVGs defaults docs running desktop
for f in [$[ grep ^Binary * | cut -f 1 -d':]]
{
  mv $f binary_files/
}
mv *.svg.patch SVGs/
mv default*.patch defaults/
mv *.rules.patch running/
mv {PUPSTATE,BOOTCONFIG,clock,current_month,issue,hosts,hostname,ld.so.conf,resolv.conf,profile}.patch running/
mv *.{htm,html,css,txt}.patch docs/
mv *.html.*.patch docs/
mv *.desktop.patch desktop/
rm -f messages.patch
cd $WDIR

 exit 0 #Uncomment to review if patches are OK FOR woof-CE
rm -f $WDIR/$PATCHES.tar.gz
tar cvzf $PATCHES.tar.gz $PATCHES/
exit 0