#!/usr/bin/env zsh

# Wrapper to "svn diff".
# Copyright 2009-2014 Vincent Lefevre <vincent@vinc17.net>.

# This program 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 3 of the License, or
# (at your option) any later version.

# This program 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.,
# 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA

# Needs Vincent Lefevre's tdiff utility to process the diff output;
# otherwise you need to remove the "| tdiff" at the end.

# Example of svncdiff usage:
#   svncdiff -5 -x -p file
# for 5 lines of unified context and function information.

emulate -LR zsh
local -a args xopt
setopt EXTENDED_GLOB

args=(--force --diff-cmd ext-diff)

while [[ $# -ge 1 ]]
do
  if [[ "x$1" == x-[0-9]# ]] then
    xopt=($xopt -U${1[2,-1]})
  elif [[ $# -ge 2 && "x$1" == x-x ]] then
    shift
    xopt=($xopt $1)
  else
    args=($args $1)
  fi
  shift
done

[[ $#xopt -ge 1 ]] && args=(-x "$xopt" $args)
${SVN_CMD:-svn} diff "$args[@]" | tdiff

# $Id: svncdiff 66945 2014-01-31 01:24:48Z vinc17/xvii $