path: root/src/templatepkg

#!/bin/bash
#
# templatepkg: template maintenance script from simplepkg suite
# feedback: rhatto at riseup.net | gpl
# 
#  Templatepkg is free software; you can redistribute it and/or modify it under the
#  terms of the GNU General Public License as published by the Free Software
#  Foundation; either version 2 of the License, or any later version.
#
#  Templatepkg is distributed in the hope that it will be useful, but WITHOUT ANY
#  WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
#  A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
#
#  You should have received a copy of the GNU General Public License along with
#  this program; if not, write to the Free Software Foundation, Inc., 59 Temple
#  Place - Suite 330, Boston, MA 02111-1307, USA
#
# $Rev$ - $Author$
#

COMMON="/usr/libexec/simplepkg/common.sh"
BASENAME="`basename $0`"

if [ -f "$COMMON" ]; then
  source $COMMON
  eval_config $BASENAME
else
  echo "error: file $COMMON found, check your $BASENAME installation"
  exit 1
fi

function usage_summary {

  echo "options are:"
  echo ""
  echo "  -c | --create: create a template from a jail or existing template"
  echo "  -u | --update: update a template from a jail"
  echo "  -a | --add: add files into a template"
  echo "  -d | --delete: delete files or folders from a template"
  echo "  -s | --sync: sync $TEMPLATE_FOLDER working copy"
  echo "  -e | --export: export $TEMPLATE_FOLDER to a svn repository"
  echo "  -i | --import: grab $TEMPLATE_FOLDER from a svn repository"   
  echo "  -r | --remove: remove a template"
  echo "  -l | --list: list templates"
  echo "  -b | --batch-edit: add or edit post-installation scripts"
  echo "  -p | --pack: create a package from a template"
  echo "  -t | --template-edit: edit template package list"
  echo "  -h | --help: display this summary"   
  echo ""   

}

function display_help {

  # display help
  # usage: help [help-topic]

  local option

  if [ -z "$1" ]; then
    echo "type $BASENAME --help <option> for aditional help"
    usage_summary
    exit
  fi

  option="$1"

  if ! echo $option | grep -q -e "^-"; then
    option="-`echo $option | sed -e 's/--/-/' -e 's/\(.\).*/\1/'`"
  else
    option="`echo $option | sed -e 's/--/-/' -e 's/\(..\).*/\1/'`"
  fi

  echo "$BASENAME: help for option $option:"
  echo ""

  usage_summary | grep -e "^  $option"

  echo ""
  case $option in

    "-c" | "--create")
      echo "      $BASENAME $option <template> [jail-root|template-name]"
      ;;
    "-u" | "--update")
      echo "      $BASENAME $option <template> [jail-root]"
      ;;
    "-a" | "--add")
      echo "      $BASENAME $option <template> <file-name> [jail-root]"
      echo ""
      echo "      file-name: the file or directory to be added"
      echo "      jail-root: the jail under file-name is located"
      ;;
    "-d" | "--delete")
      echo "      $BASENAME $option <template> <file-name> [jail-root]"
      echo ""
      echo "      file-name: the file or directory to be removed"
      echo "      jail-root: if specified, the file is also removed from the jail"
      ;;
    "-s" | "--sync")
      echo "      $BASENAME $option"
      ;;
    "-e" | "--export")
      echo "      $BASENAME $option <svn-repository>"
      ;;
    "-i" | "--import")
      echo "      $BASENAME $option <svn-repository>"
      ;;
    "-r" | "--remove")
      echo "      $BASENAME $option <template-name>"
      ;;
    "-l" | "--list")
      echo "      $BASENAME $option [path]"
      ;;
    "-b" | "--batch-edit")
      echo "      $BASENAME $option <template-name> <script-name>"
      ;;
    "-p" | "--pack")
      echo "      $BASENAME $option <template-name> [version] [build] [arch]"
      ;;
    "-t" | "--template-edit")
      echo "      $BASENAME $option <template-name>"
      ;;
    "-h" | "--help")
      echo "  -h | --help: display this help."   
      ;;
    *)
      echo $BASENAME: invalid help option $option
  esac

  case $option in
    "-c" | "-u" | "-a")
      echo ""
      echo "  if ommited, jail-root defaults to /"
      ;;
  esac

  echo ""

}

function usage {

  echo "usage: $BASENAME <option> [<template> [arguments]]"
  usage_summary
  exit

}

function import_export_templates {

  # import from or export to $TEMPLATE_FOLDER in a svn repository
  # usage: template_export <import|export> <repository>

  local templates templates_folder basedir repository mode preposition
  local repository_type repository_path

  if [ "$?" != 0 ]; then
    usage
    exit 1
  elif ! templates_under_svn; then
    echo $BASENAME: simplepkg not configured to use svn
    exit 1
  fi

  templates_folder="$TEMPLATE_FOLDER"
  templates="`basename $TEMPLATE_FOLDER`"
  basedir="`dirname $templates_folder`"
  mode="$1"
  repository="$2"
  preposition="from"

  valid_svn_repo $repository

  if [ ! -z "$2" ]; then

    if ! svn_folder $templates_folder; then

      cd $basedir

      if [ "$mode" == "export" ]; then
        preposition="to"
        check_and_create_svn_repo $repository
        echo Exporting templates to $repository...
        svn import $templates/ $repository/ -m "initial import"
        if [ "$?" != "0" ]; then
          echo $BASENAME: export failed
          exit 1
        fi
      fi

      if [ -d "templates" ]; then
        mv $templates $templates.old
      fi

      echo Checking out templates from $repository...
      svn checkout $repository $templates

      if [ "$?" == "0" ]; then
        rm -rf $templates.old
      else
        rm -rf $templates
        mv $templates.old $templates
        echo $BASENAME: $mode failed
        exit 1
      fi

    else
      echo "$BASENAME: $templates_folder seens to be already $mode""ed $preposition $repository"
      exit 1
    fi

  fi

}

function template_create {

  # create a new template

  local template_base info_commit orig_template list
  local orig_packages orig_perms orig_scripts orig_files

  if [ ! -d "`dirname $TEMPLATE_BASE`" ]; then

    echo Creating template `basename $TEMPLATE_BASE`...

    if templates_under_svn && svn_folder `dirname $TEMPLATE_BASE`; then
      cd `dirname $TEMPLATE_BASE`
      svn mkdir `dirname $TEMPLATE_BASE`
    else
      mkdir -p `dirname $TEMPLATE_BASE`
    fi

  else
    echo $BASENAME: template `basename $TEMPLATE_BASE` already exists
    exit 1
  fi

  touch `template_perms`
  touch `template_packages`

  if templates_under_svn && svn_folder `dirname $TEMPLATE_BASE`; then

    cd `dirname $TEMPLATE_BASE`

    if ! svn_check `template_files`; then
      svn mkdir `template_files`
      info_commit="yes"
    else
      mkdir -p `template_files`
    fi

    if ! svn_check `template_scripts`; then
      svn mkdir `template_scripts`
      info_commit="yes"
    else
      mkdir -p `template_scripts`
    fi

    if ! svn_check `template_packages`; then
      svn add `template_packages`
      info_commit="yes"
    fi

    if ! svn_check `template_perms`; then
      svn add `template_perms`
      info_commit="yes"
    fi

  elif templates_under_svn && svn_folder "$TEMPLATE_FOLDER"; then

    mkdir `template_files` `template_scripts`
    cd $TEMPLATE_FOLDER
    svn add `basename $TEMPLATE_BASE`
    info_commit="yes"

  else
    mkdir `template_files` `template_scripts`
  fi

  if [ -d "/$ROOT" ]; then
    template_update
  elif [ ! -z "$ROOT" ]; then

    # copy from an existing template

    if [ -d "$TEMPLATE_FOLDER/$ROOT" ]; then
      orig_template="$TEMPLATE_FOLDER/$ROOT"
    elif [ -d "$BASE_CONF/templates/$ROOT" ]; then
      orig_template="$BASE_CONF/templates/$ROOT"
    elif [ -d "$BASE_CONF/defaults/templates/$ROOT" ]; then
      orig_template="$BASE_CONF/defaults/templates/$ROOT"
    else
      return 1
    fi

    if [ -e "$orig_template/$ROOT/packages" ]; then
      orig_packages="$orig_template/$ROOT/packages"
      orig_perms="$orig_template/$ROOT/perms"
      orig_scripts="$orig_template/$ROOT/scripts"
      orig_files="$orig_template/$ROOT/files"
    else
      orig_packages="$orig_template/$ROOT.template"
      orig_perms="$orig_template/$ROOT.perms"
      orig_scripts="$orig_template/$ROOT.s"
      orig_files="$orig_template/$ROOT.d"
    fi

    if [ -f "$orig_perms" ]; then
      cat $orig_perms > `template_perms`
    fi

    if [ -f "$orig_packages" ]; then
      cat $orig_packages > `template_packages`
    fi
      
    if templates_under_svn && svn_folder $orig_template; then

      cd `dirname $TEMPLATE_BASE`

      list="`ls $orig_files/ 2> /dev/null`"
      if [ ! -z "$list" ]; then
        echo Copying files to the new template...
        rsync -av --exclude=.svn $orig_files/ `template_files`/
        svn add `basename $(template_files)`/*
        info_commit="yes"
      fi

      list="`ls $orig_scripts/ 2> /dev/null`"
      if [ ! -z "$list" ]; then
        echo Copying scripts to the new template...
        rsync -av --exclude=.svn $orig_scripts/ `template_scripts`/
        svn add `basename $(template_scripts)`/*
        info_commit="yes"
      fi

    else

      list="`ls $orig_files/ 2> /dev/null`"
      if [ ! -z "$list" ]; then
        echo Copying files to the new template...
        rsync -av $orig_files/ `template_files`/
      fi

      list="`ls $orig_scripts/ 2> /dev/null`"
      if [ ! -z "$list" ]; then
        echo Copying scripts to the new template...
        rsync -av $orig_scripts/ `template_scripts`/
      fi

    fi

  else
    echo $BASENAME: warning: no root directory defined
  fi

  if [ "$info_commit" == "yes" ] && [ -z "$SILENT" ]; then
    echo "Please run 'jail-commit --all' to add files under $file into the svn repository"
  fi

}

function template_update {

  # update the template package list

  check_template_exist

  if [ ! -d "$ROOT/var/log/packages" ]; then
    echo $ROOT/var/log/packages: directory not found
    exit 1
  fi

  echo Checking package list for template `basename $TEMPLATE_BASE`...

  for package in `ls -1 $ROOT/var/log/packages/`; do
    pack=`package_name $package`
    if [ -f $TEMPLATE ]; then
      if ! `grep -v -e "^#" $TEMPLATE | cut -d : -f 1 | awk '{ print $1 }' | grep -q -e "^$pack\$"`; then
        echo $pack >> $TEMPLATE
        echo Adding $pack # on $TEMPLATE
      fi
    else
      echo $pack >> $TEMPLATE
      echo Adding $pack # on $TEMPLATE
    fi
  done

  # check if each package from the template is installed
  grep -v -e "^#" $TEMPLATE | cut -d : -f 1 | awk '{ print $1 }' | while read pack; do

    if [ ! -z "$pack" ]; then
      unset found
      for candidate in `ls $ROOT/var/log/packages/$pack* 2> /dev/null`; do
        candidate="`package_name $candidate`"
        if [ "$pack" == "$candidate" ]; then
          found="1"
          break
        fi
      done
      if [ "$found" != "1" ]; then
        # remove a non-installed package from the template
        sed "/^$pack$/d" $TEMPLATE | sed "/^$pack $/d" | sed "/^$pack:*/d" | sed "/^$pack */d" > $TEMPLATE.tmp
        cat $TEMPLATE.tmp > $TEMPLATE
        rm -f $TEMPLATE.tmp
        echo Removing $pack # from $TEMPLATE
      fi
    fi

  done

  if ! svn_check `template_packages` && svn_folder `dirname $TEMPLATE_BASE`; then
    cd `dirname $TEMPLATE_BASE`
    svn add `basedir $(template_packages)`
  fi

}

function template_add {

  # add a file in a template
  # usage: template_add <jail-root> <file>

  local info_commit cwd

  if [ -z "$1" ] || [ -z "$2" ]; then
    return 1
  fi

  check_template_exist

  jail="/$1" 
  file="$2"

  if [ -a "`template_files`/$file" ]; then
    if [ -d "`template_files`/$file" ]; then

      echo $BASENAME: folder `slash $file` already on `template_files`, checking for contents

      cd $jail
      for candidate in `find $file`; do
        if [ ! -a "`template_files`/$candidate" ]; then
          mkdir -p `template_files`/`dirname $candidate`
          cp -a $jail/$candidate `template_files`/$candidate
          if templates_under_svn && svn_folder `template_files`; then
            cwd="`pwd`"
            cd `template_files`
            svn add ./$candidate
            if [ "$?" != "0" ]; then
              echo $BASENAME: error adding `slash $candidate` into the revision system
            fi
            cd $cwd
            info_commit="yes"
          else
            echo Added `slash $jail/$candidate` on `slash $(template_files)/$candidate`
          fi
        fi
      done

      if [ "$info_commit" == "yes" ] && [ -z "$SILENT" ]; then
        echo "Please run 'jail-commit --all' to add files under `slash $file` into the svn repository"
      fi

    else
      echo $BASENAME: file `slash $file` already on `template_files`
      exit 1
    fi
  else

    if [ -a "$jail/$file" ]; then

      destination="`echo $(template_files)/$file | sed -e 's/\/$//'`"

      if templates_under_svn && svn_folder `template_files`; then

        candidate="./`dirname $file`"

        if ! svn_folder `template_files`/$candidate; then
          mkdir -p `template_files`/$candidate
          cd `template_files`/`dirname $candidate`
          while true; do
            if svn_folder $(pwd); then
              svn add `basename $candidate`
              break
            else
              candidate="`basename $(pwd)`"
              cd ..
            fi
          done
        fi

        cp -a $jail/$file $destination

        cwd="`pwd`"
        cd `template_files`
        svn add ./$file

        if [ "$?" != "0" ]; then
          echo $BASENAME: error adding `slash $candidate` into the revision system
        else
          if [ -z "$SILENT" ]; then
            echo "Please run 'jail-commit --all' to add `slash $file` into the svn repository"
          fi
        fi

        cd $cwd

      else

        mkdir -p `template_files`/`dirname $file`/
        cp -a $jail/$file $destination
        echo Added `slash $jail/$file` on `slash $destination`

      fi

    else
      echo $BASENAME: `slash $jail/$file`: file not found
      exit 1
    fi
  fi

}

function check_template_exist {

  # check if a template exists
  # and create missing components

  local components

  components="`template_packages` `template_perms` `template_files` `template_scripts`"

  if [ ! -d "`dirname $TEMPLATE_BASE`" ]; then
    echo $BASENAME: template not found
    exit 1
  fi

  for component in $components; do

    if [ ! -e "$component" ]; then

      echo "$BASENAME: template component not found: $component; creating..."

      cd `dirname $TEMPLATE_BASE`

      if [ "$component" == "perms" ] || [ "$component" == "template" ]; then
        touch $component
      else
        mkdir $component
      fi

      if templates_under_svn && svn_folder `dirname $TEMPLATE_BASE`; then
        svn add $component
        info_commit="yes"
      fi

    elif templates_under_svn && svn_folder `dirname $TEMPLATE_BASE` && \
         ! svn_check $component; then

      cd `dirname $TEMPLATE_BASE`
      svn add $component
      info_commit="yes"

    fi

  done

  if [ "$info_commit" == "yes" ] && [ -z "$SILENT" ]; then
    echo "Please run 'jail-commit --all' to add new files in the svn repository"
  fi  

}

function template_delete {

  # delete a file from a template
  # usage: template_delete <file> [jail-root]

  if [ -e "`template_files`/$1" ]; then

    # first try to remove the file from the template
    if templates_under_svn && svn_folder `template_files`; then
      cd `template_files`
      svn del --force ./$1 || rm -rf ./$1
      if [ -z "$SILENT" ]; then
        echo "Please run 'jail-commit --all' to del $1 in the svn repository"
      fi
    else
      rm -rf `template_files`/$1
      echo Removed $1 from `template_files`
    fi

    # then, if requested, remove the file from the jail
    if [ ! -z "$2" ]; then
      if [ ! -d "$2" ]; then
        echo $BASENAME: jail not found: $2
      elif [ -e "$2/$1" ]; then
        rm -rf $2/$1
        echo Removed $1 from jail $2
      else
        echo $BASENAME: file not found: $2/$1
      fi
    fi

  elif [ -e "`template_scripts`/$1" ]; then
    if templates_under_svn && svn_folder `template_scripts`; then
      cd `template_scripts`
      svn del --force ./$1 || rm -rf ./$1
      if [ -z "$SILENT" ]; then
        echo "Please run 'jail-commit --all' to del $1 in the svn repository"
      fi
    else
      rm -rf `template_scripts`/$1
      echo Removed $1 from `template_scripts`
    fi
  else
    if [ ! -d "`template_files`" ]; then
      echo $BASENAME: template folder `template_files` not found
    else
      echo $BASENAME: file $1 not found at `template_files`
    fi
    exit 1
  fi

}

function template_remove {

  # remove a template
  # usage: template_remove

  local basedir template

  basedir="`dirname $TEMPLATE_BASE`"
  template="`basename $basedir`"

  if [ ! -d "$basedir" ]; then
    echo $BASENAME: template $template does not exist
    exit 1
  fi

  if templates_under_svn && svn_folder $basedir; then
    cd $TEMPLATE_FOLDER
    svn update
    svn del --force $template
    if [ "$?" != "0" ]; then
      echo $BASENAME: error deleting template $template
    else
      svn commit -m "deleted $template"
      if [ "$?" != "0" ]; then
        echo $BASENAME: error commiting to svn repository
      fi
    fi
  else
    rm -rf $basedir
  fi

}

function template_list {

  # list templates
  # usage: template_list [path]

  local list basedir template

  if [ "$TEMPLATE_STORAGE_STYLE" != "own-folder" ] && \
     [ "$TEMPLATE_STORAGE_STYLE" != "compact" ]; then
    echo "$BASENAME: option only available if TEMPLATE_STORAGE_STYLE configured as 'own-folder' or 'compact'"
    return 1
  fi

  if echo $1 | grep -q "/" || [ ! -z "$1" ]; then

    template="`echo $1 | cut -d "/" -f 1`"

    if [ -e "$BASE_CONF/defaults/templates/$1" ]; then
      list="`ls $BASE_CONF/defaults/templates/$1 2> /dev/null`"
      if [ "$?" == "0" ]; then
        list="`echo $list | xargs`"
        echo "In the default template $template: $list"
      fi
    fi

    if [ -e "$TEMPLATE_FOLDER/$1" ]; then
      list="`ls $TEMPLATE_FOLDER/$1 2> /dev/null`"
      if [ "$?" == "0" ]; then
        list="`echo $list | xargs`"
        echo "In the custom template $template: $list"
      fi      
    fi

  else

    list="`ls $BASE_CONF/defaults/templates/$1 2> /dev/null`"
    if [ "$?" == "0" ]; then
      list="`echo $list | xargs`"
      echo "Default templates: $list"
    fi

    list="`ls $TEMPLATE_FOLDER/$1 2> /dev/null`"
    if [ "$?" == "0" ]; then
      list="`echo $list | xargs`"
      echo "Custom templates: $list"
    fi

  fi

}

function template_post_install_edit {

  # add or edit a post-installation script
  # usage: template_post_install_edit <script-name>

  if [ -z "$1" ]; then
    echo $BASENAME: no template specified
    exit 1
  elif echo $1 | grep -q "/"; then
    echo $BASENAME: error: invalid script name $1
  fi

  if [ -f "`template_scripts`/$1" ]; then
    sha1sum="`sha1sum $(template_scripts)/$1`"
    if [ ! -z "$EDITOR" ]; then
      $EDITOR `template_scripts`/$1
    else
      vi `template_scripts`/$1
    fi
    if [ "$sha1sum" != "`sha1sum $(template_scripts)/$1`" ] && \
       svn_folder `dirname $TEMPLATE_BASE` && [ -z "$SILENT" ]; then
      echo "Please run 'jail-commit --all' to send changes to the repository"
    fi    
  else

    if [ -e "`template_scripts`/$1" ]; then

      echo $BASENAME: file `template_scripts`/$1 not a regular file

    elif [ -d "`template_scripts`" ]; then

      touch `template_scripts`/$1
      chmod +x `template_scripts`/$1

      if svn_folder `template_scripts`; then
        cd `template_scripts`
        svn add $1
        if [ -z "$SILENT" ]; then
          echo "Please run 'jail-commit --all' to send the script to the repository"
        fi
      fi

      echo "$BASENAME: script created; run templatepkg -p `basename $TEMPLATE_BASE` $1 again to edit it"

    else
      echo $BASENAME: folder not found: `template_scripts`
    fi

  fi

}

function template_edit {

  # edit a template package list
  # usage: template_edit

  if [ -f "`template_packages`" ]; then
    sha1sum="`sha1sum $(template_packages)`"
    if [ ! -z "$EDITOR" ]; then
      $EDITOR `template_packages`
    else
      vi `template_packages`
    fi
    if [ "$sha1sum" != "`sha1sum $(template_packages)`" ] && \
       svn_folder `dirname $TEMPLATE_BASE` && [ -z "$SILENT" ]; then
      echo "Please run 'jail-commit --all' to send changes to the repository"
    fi
  elif [ -e "`template_packages`" ]; then
    echo $BASENAME: file `template_packages` not a regular file
  else
    echo $BASENAME: file not found: `template_packages`
  fi

}

function require {

  # requires a string
  # usage: require [string]

  if [ -z "$1" ]; then
    usage
  fi

}

function setroot {

  # set ROOT variable
  # usage: setroot <value1> <value2>
  
  if [ -z "$1" ]; then
    ROOT="/"
  else
    ROOT="$1"
  fi

}

function create_doinst {

  # create a doinst.sh from a template perms file
  # usage: create_doinst <doinst-path>

  rm -f $1/doinst.sh

  if [ -s "`template_perms`" ]; then
    echo Creating doinst.sh...
    cat `template_perms` | while read entry; do
      file="`echo $entry | cut -d ";" -f 1`"
      if [ -e "`template_files`/$file" ]; then
        owner="`echo $entry | cut -d ";" -f 2`"
        group="`echo $entry | cut -d ";" -f 3`"
        perms="`echo $entry | cut -d ";" -f 4`"
        echo "( chmod $perms /$file )" >> $1/doinst.sh
        echo "( chown $owner:$group /$file )" >> $1/doinst.sh
      fi
    done
  fi

}

function package_template {

  # make a package from a template
  # usage: package_template [version] [build] [arch]

  local template version build arch

  template="`basename $TEMPLATE_BASE`"

  if [ ! -d "`template_files`" ]; then
    $BASENAME: folder not found: `template_files`
    return 1
  fi

  echo Buiding package for template $template...

  if [ -z "$1" ]; then
    version="1"
  else
    version="$1"
  fi

  if [ -z "$2" ]; then
    build="1"
  else
    build="$2"
  fi

  if [ -z "$3" ]; then
    arch="noarch"
  else
    arch="$3"
  fi

  TMP=${TMP:=/tmp}
  rm -rf $TMP/templatepkg
  mkdir -p $TMP/templatepkg

  rsync -av --exclude=.svn `template_files`/ $TMP/templatepkg/
  mkdir $TMP/templatepkg/install
  create_doinst $TMP/templatepkg/install

  echo "template-$template: template-$template" > $TMP/templatepkg/install/slack-desc
  echo "template-$template: " >> $TMP/templatepkg/install/slack-desc
  echo "template-$template: simplepkg template $template" >> $TMP/templatepkg/install/slack-desc

  for ((n=1;n<=8;n++)); do
    echo "template-$template: " >> $TMP/templatepkg/install/slack-desc
  done

  cd $TMP/templatepkg

  makepkg -c n -l y $TMP/template-$template-$version-noarch-$build.$MKBUILD_COMPRESS

  cd $TMP
  rm -rf templatepkg

}

# -----------------------------------------------------
#                       main
# -----------------------------------------------------

if [ ! -z "$2" ]; then
  search_template $2 --new
fi

TEMPLATE="`template_packages`"

if [ "$1" == "-u" ] || [ "$1" == "--update" ]; then

  require $2
  setroot $3
  template_update

elif [ "$1" == "-c" ] || [ "$1" == "--create" ]; then

  require $2
  setroot $3
  template_create

elif [ "$1" == "-a" ] || [ "$1" == "--add" ]; then

  require $2

  if [ -z "$3" ]; then
    usage
  else
    setroot $4
  fi

  template_add $ROOT $3

elif [ "$1" == "-d" ] || [ "$1" == "--delete" ]; then

  require $2

  if [ -z "$3" ]; then
    usage
  else
    template_delete $3 $4
  fi

elif [ "$1" == "-s" ] || [ "$1" == "--sync" ]; then

  if templates_under_svn && svn_folder $TEMPLATE_FOLDER; then
    ( cd $TEMPLATE_FOLDER && svn update )
    true
  fi

elif [ "$1" == "-e" ] || [ "$1" == "--export" ]; then
 
  require $2 
  import_export_templates export $2

elif [ "$1" == "-i" ] || [ "$1" == "--import" ]; then

  require $2
  import_export_templates import $2

elif [ "$1" == "-r" ] || [ "$1" == "--remove" ]; then

  require $2
  template_remove

elif [ "$1" == "-l" ] || [ "$1" == "--list" ]; then

  template_list $2

elif [ "$1" == "-b" ] || [ "$1" == "--batch-edit" ]; then

  require $3
  template_post_install_edit $3

elif [ "$1" == "-t" ] || [ "$1" == "--template-edit" ]; then

  require $2
  template_edit

elif [ "$1" == "-p" ] || [ "$1" == "--pack" ]; then

  require $2
  shift ; shift
  package_template $*

elif [ "$1" == "-h" ] || [ "$1" == "--help" ]; then

  display_help $2 

else
  usage
fi