#! /opt/bin/dash
#
# make public copies of some files
#
# all secret seeds are replaced with "123456789"

TOP="/home/perry/src/fog/os"

# with -d option just show differences, no copy
#
case "$1" in
 "-d") diff="1"; shift;;
    *) diff="";;
esac

check() { # show diffs
 dest="$1"
 while read f; do
   if [ -z "$f" ]; then continue; fi
   from="$TOP/$f"
   cmd="diff $from $dest/"
   echo "$cmd"
   eval "$cmd"
 done
}

copy() { # copy
 dest="$1"
 if [ -n "$diff" ]; then check "$dest"; return; fi
 echo "copy $dest"
 while read f; do
   if [ -z "$f" ]; then continue; fi
   from="$TOP/$f"
   cmd="cp -p $from $dest/"
   #echo " $cmd"
   eval "$cmd"
 done
}

link() { # copy/link python files
 dest="$1"
 if [ -n "$diff" ]; then return; fi
 echo "link $dest"
 while read f; do
   if [ -z "$f" ]; then continue; fi
   from="$TOP/$f"
   cmd="cp -p $from python/"
   #echo " $cmd"
   eval "$cmd"
   cmd="rm -f $dest/$dest.py && ln -s ../python/$dest.py $dest/"
   #echo " $cmd"
   eval "$cmd"
 done
}

mod() { # copy/modify
 dest="$1"; e1="$2"; e2="$3"
 if [ -n "$diff" ]; then check "$dest"; return; fi
 echo "mod $dest extra: $e1 $e2"
 while read f; do
   if [ -z "$f" ]; then continue; fi
   from="$TOP/$f"
   to="$dest/"$(basename "$f")
   #echo "mod $from $to extra: $e1 $e2"
   if [ -n "$e2" ]; then
     sed -e 's/\( s[12]*\)="........."/\1="123456789"/g' -e "$e1" -e "$e2" "$from" > "$to"
   elif [ -n "$e1" ]; then
     sed -e 's/\( s[12]*\)="........."/\1="123456789"/g' -e "$e1"          "$from" > "$to"
   else
     sed -e 's/\( s[12]*\)="........."/\1="123456789"/g'                   "$from" > "$to"
   fi
   chmod 755 "$to"
   touch -r "$from" "$to"
 done
}
#---
# just update specified list
if [ "$#" -gt 0 ]; then
 for what
 do
   echo "cgi/${what}-check\ncgi/${what}-post" | copy "$what"
   echo "cgi/${what}\nprog/${what}/post.sh" | mod "$what"
 done
 exit
fi
#---
# standard list and special cases
LIST="checksum fsck malloc paging-linear-translate paging-multilevel-translate paging-policy process-run\
 relocation scheduler segmentation ssd vsfs"
SPECIAL="disk mlfq raid"
#---
# copy check, post, and python
for what in $LIST $SPECIAL
do
  echo "cgi/${what}-check\ncgi/${what}-post" | copy "$what"
  echo "python.ORIG/${what}.py" | link "$what"
done
#
echo "cgi/scheduler-public\ncgi/scheduler-public-post\nprog/scheduler/post-public.sh" | copy "scheduler"
#---
# modify cgi and post.sh
for what in $LIST $SPECIAL
do
  echo "cgi/${what}\nprog/${what}/post.sh" | mod "$what"
done
#---
# copy python diffs
if [ -z "$diff" ]; then
 cmd="cp -p $TOP/diff DIFF"
 echo "$cmd"
 eval "$cmd"
fi
#-- skip:
# special cases, remove non-standard options
#-- echo "cgi/disk\nprog/disk/post.sh" | mod "disk" 's/ -d / /'
#-- echo "cgi/mlfq\nprog/mlfq/post.sh" | mod "mlfq" 's/ opt=.*//' 's/ $opt//'
#-- echo "cgi/raid\nprog/raid/post.sh" | mod "raid" 's/ -d / /'