#!/bin/sh
# Set initial variables:
CWD=`pwd`
if [ "$TMP" = "" ]; then
  TMP=/tmp
fi
PKG=$TMP/package-diff
SRC=/devel/manpagesrc
INFO=/devel/info-pages/usr/info
TEX=/devel/texinfo-docs

if [ ! -d $TMP ]; then
  mkdir -p $TMP # location to build the source
fi
if [ ! -d $PKG ]; then
  mkdir -p $PKG # place for the package to be built
fi

# Explode the package framework:
cd $PKG
explodepkg $CWD/_diff.tar.gz

echo "+===============+"
echo "| diffutils-2.7 |"
echo "+===============+"
cd $TMP
tar xzvf $CWD/diffutils-2.7.tar.gz
cd diffutils-2.7
./configure --prefix=/usr
make CFLAGS=-O2 LDFLAGS=-s PR_PROGRAM=/usr/bin/pr
cat cmp > $PKG/usr/bin/cmp
cat diff > $PKG/usr/bin/diff
cat diff3 > $PKG/usr/bin/diff3
cat sdiff > $PKG/usr/bin/sdiff
for page in $CWD/cmp.1 $CWD/diff.1 $CWD/diff3.1 $CWD/sdiff.1 ; do
  cat $page | gzip -9c > $PKG/usr/man/man1/`basename $page`.gz
done
for file in diff.info diff.info-1 diff.info-2 diff.info-3 diff.info-4 ; do
 cat $file | gzip -9c > $PKG/usr/info/$file.gz
done

# Build the package:
cd $PKG
tar czvf $TMP/diff.tgz .

# Warn of zero-length files:
for file in `find . -type f -print` ; do
 if [ "`filesize $file`" = "0" ]; then
  echo "WARNING: zero length file $file"
 fi
 if [ "`filesize $file`" = "20" ]; then
  echo "WARNING: possible empty gzipped file $file"
 fi
done

# Clean up the extra stuff:
if [ "$1" = "--cleanup" ]; then
  rm -rf $TMP/diffutils-2.7
  rm -rf $PKG
fi