mktarball

#!/bin/sh


set_timestamps () {
  local dir="$1"
  local tag="$2"
  local projver="$3"

  (cd $projver && find * -type f -print) |
    while IFS= read -r file
    do
      touch -t $(cd $dir && git rev-list --format=format:%ai -n1 $tag -- $file |
        sed '/^commit/d;s/ [-+].*$//;s/[- :]//g;s/\(..\)$/.\1/') $projver/$file
    done	
}

dir=$1
tag=$2
tarsuffix=$3
projver=${dir##*/}-$tag
htscodecs_version=""

case $dir in
  */htslib)
    if [ -e "$dir/.git/modules/htscodecs" ] ; then
      cat > "$dir/.git/modules/htscodecs/info/attributes" <<'EOF'
/.*            export-ignore
/javascript    export-ignore
/m4            export-ignore
/README.md     export-ignore
*Makefile.am   export-ignore
configure*     export-ignore
EOF
      description=$(cd $dir/htscodecs && git describe --match 'v[0-9].[0-9]*' --dirty --always)
      htscodecs_version=${description##v}
    fi
    ;;
esac

rm -rf $projver
(cd $dir && git archive --prefix=$projver/ $tag) | tar -x
set_timestamps $dir $tag $projver

(cd $dir && git ls-tree $tag) |
  while read -r mode objtype hash item
  do
    if test "$objtype" = "commit" ; then
      (cd "$dir/$item" && git archive --prefix="$projver/$item/" "$hash" ) |
        tar -x
      set_timestamps "$dir/$item" "$hash" "$projver/$item"
    fi 
  done

case $dir in
  */htslib)
    if [ "x$htscodecs_version" != "x" -a -e "$projver/htscodecs/htscodecs" ] ; then
      echo '#define HTSCODECS_VERSION_TEXT "'"$htscodecs_version"'"' > "$projver/htscodecs/htscodecs/version.h"
    fi
    ;;
esac

if test -f $projver/configure.ac
then
  (cd $projver
  touch config.mk
  unset MAKEFLAGS MAKELEVEL MAKEOVERRIDES MFLAGS
#  grep -q AX_ configure.ac && (grep -q m4_include configure.ac || aclocal)
#  test -e config.h.in || autoheader
#  autoconf --warnings=all
  autoreconf -i --warnings=all
  rm -rf autom4te.cache config.mk)
  # Look for unexpanded autoconf macros
  egrep '^[^#]*\<A[A-Z]_[A-Z_]*' $projver/configure && exit 1
fi
rm -f $projver$tarsuffix.tar.bz2
tar --mode=ug=rwX --mode=o=rX --owner=0 --group=0 -cjf $projver$tarsuffix.tar.bz2 $projver
rm -r $projver