#!/bin/zsh

# mercurial related stuff {{{
if check_com -c hg ; then
    # gnu like diff for mercurial
    # http://www.selenic.com/mercurial/wiki/index.cgi/TipsAndTricks
    #f5# GNU like diff for mercurial
    hgdi() {
        emulate -L zsh
        for i in $(hg status -marn "$@") ; diff -ubwd <(hg cat "$i") "$i"
    }

    # build debian package
    #a2# Alias for \kbd{hg-buildpackage}
    alias hbp='hg-buildpackage'

    # execute commands on the versioned patch-queue from the current repos
    alias mq='hg -R $(readlink -f $(hg root)/.hg/patches)'

    # diffstat for specific version of a mercurial repository
    #   hgstat      => display diffstat between last revision and tip
    #   hgstat 1234 => display diffstat between revision 1234 and tip
    #f5# Diffstat for specific version of a mercurial repos
    hgstat() {
        emulate -L zsh
        [[ -n "$1" ]] && hg diff -r $1 -r tip | diffstat || hg export tip | diffstat
    }

    #f5# Get current mercurial tip via hg itself
    gethgclone() {
        emulate -L zsh
        setopt errreturn
        if [[ -f mercurial-tree/.hg ]] ; then
            cd mercurial-tree
            echo "Running hg pull for retreiving latest version..."
            hg pull
            echo "Finished update. Building mercurial"
            make local
            echo "Setting \$PATH to $PWD:\$PATH..."
            export PATH="$PWD:$PATH"
        else
            echo "Downloading mercurial via hg"
            hg clone http://selenic.com/repo/hg mercurial-tree
            cd mercurial-tree
            echo "Building mercurial"
            make local
            echo "Setting \$PATH to $PWD:\$PATH..."
            export PATH="$PWD:$PATH"
            echo "make sure you set it permanent via ~/.zshrc if you plan to use it permanently."
            # echo "Setting \$PYTHONPATH to PYTHONPATH=\${HOME}/lib/python,"
            # export PYTHONPATH=${HOME}/lib/python
        fi
    }

fi # end of check whether we have the 'hg'-executable

# get current mercurial snapshot
#f5# Get current mercurial snapshot
gethgsnap() {
    emulate -L zsh
    setopt errreturn
    if [[ -f mercurial-snapshot.tar.gz ]] ; then
         echo "mercurial-snapshot.tar.gz exists already, skipping download."
    else
        echo "Downloading mercurial snapshot"
        wget http://www.selenic.com/mercurial/mercurial-snapshot.tar.gz
    fi
    echo "Unpacking mercurial-snapshot.tar.gz"
    tar zxf mercurial-snapshot.tar.gz
    cd mercurial-snapshot/
    echo "Installing required build-dependencies"
    $SUDO apt-get update
    $SUDO apt-get install python2.4-dev
    echo "Building mercurial"
    make local
    echo "Setting \$PATH to $PWD:\$PATH..."
    export PATH="$PWD:$PATH"
    echo "make sure you set it permanent via ~/.zshrc if you plan to use it permanently."
}