#!/bin/sh
# usage:
# $0 TODO-FILE PKGBASE PKGVERSION
# for example
# $0 /usr/pkgsrc/doc/TODO opal 3.6.4
# removes an entry for opal 3.6.4 or an older version from /usr/pkgsrc/doc/TODO
#
# test cases:
# remove_todo foo-1.2 with no foo entry in TODO
# remove_todo foo-1.2 with "foo-1.1", "foo-1.2", or "foo-1.3" in TODO
# remove_todo foo-1.2 with "foo-bar-1.1" in TODO
# remove_todo foo-1.2 with "foo-1.1 [some comment]", "foo-1.2 [some comment]", "foo-1.3 [some comment] in TODO
set -e

if [ "$#" != 3 ]
then
    echo incorrect number of arguments >&2
    echo usage: $0 TODO-FILE PKGBASE PKGVERSION >&2
    exit 1
fi

TODO=$1
PKGBASE=$(echo $2 | sed "s/^py[0-9][0-9]*-/py-/")
PKGVERSION=$3
TMPFILE="$TODO.$$"
PKG_ADMIN="${PKG_ADMIN:-pkg_admin}"

MATCH=$(grep -n '^[ 	]*o '"$PKGBASE"'-[0-9]' "$TODO" | sed 's/^\([^:]*:\)[ 	]*o /\1/;s/ .*//')

if [ $(echo "$MATCH" | wc -l) != 1 ]; then
     echo "$0: multiple matches" 1>&2
     echo "$MATCH" 1>&2
     exit 1
fi

LINE=$(echo "$MATCH" | sed 's/:.*//')
FOUNDPKG=$(echo "$MATCH" | sed -e "s/^[^:]*://")

if ${PKG_ADMIN} pmatch "$PKGBASE"\<="$PKGVERSION" "$FOUNDPKG"; then
    echo Removing "$FOUNDPKG" from TODO
    sed < "$TODO" "$LINE"d > "$TMPFILE"
    mv "$TMPFILE" "$TODO"
fi