Re: [Guillem Jover] Parsing of dpkg status file considered harmful

[Florent Rougon <f.rougon@free.fr>]

Hi,

Frank Küster <frank@debian.org> wrote:

> This affects us...

Yup. I modified dpkg_md5sum() in lmodern.preinst as follows. Since this
function came from the teTeX packages, maybe you'll have to commit a
similar change to TL.

# Retrieve the MD5 sum of a conffile from the dpkg database.
#
# $1 -- package name
# $2 -- full (absolute) path to the conffile; this path will be matched
#       against the output of:
#
#         dpkg-query -W -f='${Conffiles}' <package>
#
dpkg_md5sum()
{
    package="$1"
    conffile="$2"

    found=0

    dpkg-query -W -f='${Conffiles}' "$package" \
      | while read file sum; do
            if [ "$file" = "$conffile" ]; then
                echo "$sum"
                found=1
                break
            fi
        done

    if [ $found -eq 1 ]; then
        res=0
    else
        echo "Conffile '$conffile' not found in package '$package'" >&2
        res=1
    fi

    return $res
}

This is only partially tested, but I'm confident it works (I tested the
"core" in an interactive shell).

I also committed a trivial change to config_move() because it uses
dpkg_md5sum() and therefore needs a new argument indicating the package
name. Maybe you'll also have to change TL if using config_move() there.

-- 
Florent