#!/usr/bin/env sh
# $Id$
#
# This script is a simple wrapper that will run Drush with the most appropriate
# php executable it can find.
#

# Get the absolute path of this executable
ORIGDIR=$(pwd)
SELF_PATH=$(cd -P -- "$(dirname -- "$0")" && pwd -P) && SELF_PATH=$SELF_PATH/$(basename -- "$0")

# Resolve symlinks - this is the equivalent of "readlink -f", but also works with non-standard OS X readlink.
while [ -h "$SELF_PATH" ]; do
    # 1) cd to directory of the symlink
    # 2) cd to the directory of where the symlink points
    # 3) Get the pwd
    # 4) Append the basename
    DIR=$(dirname -- "$SELF_PATH")
    SYM=$(readlink $SELF_PATH)
    SELF_PATH=$(cd "$DIR" && cd "$(dirname -- "$SYM")" && pwd)/$(basename -- "$SYM")
done
cd "$ORIGDIR"

# Build the path to drush.php.
SCRIPT_PATH=$(dirname "$SELF_PATH")/drush.php
case $(uname -a) in
  CYGWIN*)
    SCRIPT_PATH=$(cygpath -w -a -- "$SCRIPT_PATH") ;;
esac


# If not exported, try to determine and export the number of columns.
# We do not want to run $(tput cols) if $TERM is empty or "dumb", because
# if we do, tput will output an undesirable error message to stderr.  If
# we redirect stderr in any way, e.g. $(tput cols 2>/dev/null), then the
# error message is suppressed, but tput cols becomes confused about the
# terminal and prints out the default value (80).
if [ -z $COLUMNS ] && [ -n "$TERM" ] && [ "$TERM" != dumb ] && [ ! -z "`which tput`" ] ; then
  # Note to cygwin users: install the ncurses package to get tput command.
  if COLUMNS=$(tput cols); then
    export COLUMNS
  fi
fi

if [ ! -z "$DRUSH_PHP" ] ; then
  # Use the DRUSH_PHP environment variable if it is available.
  php="$DRUSH_PHP"
else
  # Default to using the php that we find on the PATH.
  # Note that we need the full path to php here for Dreamhost, which behaves oddly.  See http://drupal.org/node/662926
  php=`which php`

  # We check for a command line (cli) version of php, and if found use that.
  which php-cli >/dev/null 2>&1
  if [ "$?" = 0 ] ; then
    php=`which php-cli`
  fi

  # On MSYSGIT, we need to use "php", not the full path to php
  if [ ! -z "$MSYSTEM" ] && [ "x${MSYSTEM:0:5}" = "xMINGW" ] ; then
    php="php"
  fi
fi

# Check to see if the user has provided a php.ini file or drush.ini file in any conf dir
# Last found wins, so search in reverse priority order
for conf_dir in $(dirname "$SELF_PATH") /etc/drush $HOME/.drush ; do
  if [ -f $conf_dir/php.ini ] ; then
    drush_php_ini=$conf_dir/php.ini
  fi
  if [ -f $conf_dir/drush.ini ] ; then
    drush_php_override=$conf_dir/drush.ini
  fi
done

# Add in the php file location and/or the php override variables as appropriate
if [ "x$drush_php_ini" != "x" ] ; then
  php_options="--php-ini $drush_php_ini"
fi
if [ "x$drush_php_override" != "x" ] ; then
  php_options=`grep '^[a-z_A-Z0-9]\+ *=' $drush_php_override | sed -e 's|\([^ =]*\) *= *\(.*\)|\1="\2"|' -e 's| ||g' -e 's|^|\
-d |' | tr '\n\r' '  '`
fi

# Pass in the path to php so that drush knows which one
# to use if it re-launches itself to run subcommands.  We
# will also pass php options if any are defined.
if [ -z "$php_options" ] ; then
  exec "$php" $php_options "$SCRIPT_PATH" --php="$php" "$@"
else
  exec "$php" $php_options "$SCRIPT_PATH" --php="$php" --php-options="$php_options" "$@"
fi