#!/bin/bash
# This script makes a copy of the source directory with certain Apple-internal
# portions of the code removed.

origsrc=$(pwd)
SRCROOT=/tmp/$(basename $origsrc)
echo Exporting to $SRCROOT
rm -rf $SRCROOT
mkdir -p $SRCROOT

tar cf - --exclude=.svn --exclude=.git . | \
  (cd $SRCROOT; tar xf - )
cd $SRCROOT

# Filter out !_OPEN_SOURCE_ source -- don't modify anything in the llvm/ subdir
find . -path ./llvm -prune -o -type f -print | while read file
do
    rm -f "${file}.temp"
    case "$file" in
    *.h | *.c | *.cpp)
        unifdef -D__OPEN_SOURCE__ -D_OPEN_SOURCE_ "$file" > "${file}.temp"
        if [ $? -ne 0 ]
        then
            echo Re-doing strip of $file via manual method.
            perl -ne 'if  (/!__OPEN_SOURCE__/) { $skip = 0; } elsif (/__OPEN_SOURCE__/) { $skip = 1; } elsif (! $skip) { print; }' < "$file" > "${file}.temp"
        fi
        ;;
    *)
        perl -ne 'if  (/!__OPEN_SOURCE__/) { $skip = 0; } elsif (/__OPEN_SOURCE__/) { $skip = 1; } elsif (! $skip) { print; }' < "$file" > "${file}.temp"
        ;;
    esac
    if cmp "$file" "${file}.temp" >/dev/null
    then
        :
    else
        cat "${file}.temp" > "$file"
    fi
    rm "${file}".temp
done

echo Running llvm sanitize script

cd $SRCROOT/llvm && MODIFY_LLVM_IN_PLACE=1 ./EXPORT.APPLE

cd $SRCROOT
find . -type f -name '*.APPLE' -exec rm -rf {} \;

exit 0