functions

#!/bin/sh

##
# Functions for bash kit.
#
# This file contains various functions for making life on the command line a
# little bit easier.

##
# Change directory using the name of a directory known to Drupal.
#
# This function utilizes drush's drupal-directory command to change directory
# to the returned path. It used pushd instead of cd to collect a history of
# visited directories.
#
# Usage:
#   cdd <name>
#
# Examples:
#   cdd devel           # Change to the devel module directory.
#   cdd modules/custom  # Change to custom modules directory (e.g.,
#                         sites/all/modules/custom).
#   cdd                 # Change to the Drupal root directory.
#
function cdd() {
  pushd `drush dd $@` > /dev/null
}

##
# Silently keeps a history of all visited directories.
#
# This function remaps cd to instead use pushd to collect a history of visited
# directories.
#
function cd () {
  if [[ -z "$1" ]]; then
    builtin cd
  else
    pushd "$@" > /dev/null
  fi
}

##
# Step back through the visited directories history.
#
# Thus function provides a quick and easy way to retrace your steps back
# through recently visited directories.
#
function pd () {
  popd "$@" > /dev/null
}

##
# Clone a project from git.drupal.org.
#
function dclone () {
  git clone "git://git.drupal.org/project/$1.git"
}

##
# Run a makefile for a given target. Should be used internally.
#
function dmake() {
  drush make $1 $2
}

##
# Open given module in the default editor.
#
function e () {
  $EDITOR `drush dd $@`
}

##
# Add aliases that persist beyond the current session.
#
# By appending aliases to the file specified by the BASH_KIT_ALIASES
# environment variable, new aliases can persist beyond the current session.
# This is helpful because usually aliases defined using the alias command are
# disgarded at the end of the session and in some cases this is not what is
# desired.
#
# Usage:
#   aa <name> <command>
#
# Example:
#   aa test date  # Maps the date command to be callable using test.
#
function aa () {
  if [ ! -f $BASH_KIT_ALIASES ]; then
    touch $BASH_KIT_ALIASES
  fi
  if [ $# -lt 2 ]; then
    echo "usage: add <alias> <command>"
    return
  fi
  local command=$1
  shift 1
  alias="alias $command='$@'"
  read -p "Add alias: $alias?"
  printf "$alias\n" >> $BASH_KIT_ALIASES
  if [ $# ]; then
    echo "Alias added"
    source $BASH_KIT_ALIASES
    else
    echo "Failed to add alias"
  fi
}

function count_changes () {
  stdin=$(cat /dev/stdin);
  lines=$(echo "$stdin" | wc -l);
  changes=$(echo "$stdin" | grep "^[+-][^+-]" | wc -l);
  removed=$(echo "$stdin" | grep "^-[^-]" | wc -l);
  added=$(echo "$stdin" | grep "^+[^+]" | wc -l);

  echo total $lines lines. $changes altered: $removed removed, $added added.
}

function vo () {
  v +/$1 $(g $1 -l);
}