svn-replace-dir

#!/bin/bash

usage() {
    cat <<"EOF"
$0 [--dry-run] <svn_dir> <replacement_dir>

This script replaces the contents of <svn_dir> with the contents of <replacement_dir>,
where <replacement_dir> is not an svn directory.

Copyleft 2010, Rowan Rodrik van der Molen <rowan@bigsmoke.us>
EOF
}

fatal_error() {
    message=$1

    echo -e "\e[1;31m$message\e[0m"
    exit 1
}

usage_error() {
    error="Wrong usage."

    if [ -n "$1" ]; then
        error=$1
    fi

    echo -e "\e[1;31m$error\e[0m"
    exit 1
}

run_command() {
    echo -e "\e[1;34m$1\e[0m"

    [ $dry_run == 1 ] || eval $1
}

dry_run=0
if [ $1 == '--dry-run' ]; then
  dry_run=1
  shift
fi


[ $# == 2 ] || usage_error "Wrong number of arguments."

svn_dir=`echo "$1"|sed -e 's#/$##'`
replacement_dir=`echo "$2"|sed -e 's#/$##'`
begin_path=$PWD

#if [ "${svn_dir:0:1}" != "/" ]; then svn_dir="$PWD/$svn_dir"; fi
#if [ "${replacement_dir:0:1}" != "/" ]; then replacement_dir="$PWD/$replacement_dir"; fi

[ -d "$svn_dir" ] || usage_error "$svn_dir is not a directory."
[ -d "$replacement_dir" ] || usage_error "$replacement_dir is not a directory."


# Create all subdirectories in $svn_dir that do not yet exist
cd $replacement_dir
find . -mindepth 1 -type d -print | sed -e 's#^./##' | while read d; do
    cd $begin_path/$svn_dir
    # Doesn't the destination directory already exist?
    if [ ! -d "$d" ]; then
        run_command "svn mkdir '$d'"
    fi
done

# Copy all files from $replacement_dir to $svn_dir
cd $begin_path/$replacement_dir
find . -type f -print | sed -e 's#^./##' | while read f; do
    cd $begin_path

    if [ -f "$begin_path/$svn_dir/$f" ]; then
        run_command "cp $replacement_dir/$f $svn_dir/$f" # FIXME: Quoting problem
    else
        run_command "cp $replacement_dir/$f $svn_dir/$f" # FIXME: Quoting problem
        cd $begin_path/$svn_dir
        run_command "svn add '$f'"
    fi
done

# Remove all files that do no longer exist in $replacement dir
cd $begin_path/$svn_dir
find . -type f -print | grep -v '.svn' | while read f; do
    if [ ! -f "$begin_path/$replacement_dir/$f" ]; then
        run_command "svn rm '$f'"
    fi
done

# Remove all subdirs that do no longer exist in $replacement dir
cd $begin_path/$svn_dir
find . -mindepth 1 -type d -print | grep -v '.svn' | while read d; do
    if [ ! -d "$begin_path/$replacement_dir/$d" ]; then
        run_command "svn rm '$d'"
    fi
done

exit 0