get patches from remote repo, name them according to freeipa guidelines

getpatch.sh

#! /bin/bash

export project=freeipa
export username=pviktori
export localrepo=~/dev/freeipa
export patchdir=~/patches/in
export remote=vm081

# Usage: getpatch <patchnumber> [num_patches]
#
# Fetch the HEAD from $remote, then format the last <num_patches> patches
# (default: 1), numbering them from <patchnumber>, and store them in $patchdir.
# If the $patchdir is empty, also generates a cover letter


export patchnumber=$1
shift
export numpatches=$1
shift

if [ "$patchnumber" == "" ]; then
    echo Need to specify patch number
    exit
fi

rm $patchdir/$project-$username-0000-cover-letter.patch
if ls $patchdir/* > /dev/null; then
    COVER=''
    echo 'clean the destination directory to generate cover letter'
else
    COVER='--cover-letter'
fi

set -x

export patchnumber=`printf "%04d" $patchnumber`
export opts="-M3 -C -N -B --patience --minimal --full-index $COVER --inter-hunk-context=3"

cd $localrepo
    git fetch $remote HEAD
    patchnames=$(git format-patch $opts FETCH_HEAD~$numpatches..FETCH_HEAD --start-number $patchnumber $@)

    for patchname in $patchnames; do
        mv $patchname $patchdir/$project-$username-$patchname
    done