#!/bin/sh
# $Id$
# Copyright (c) 2007 Eric Hameleers <alien@slackware.com>
# All rights reserved.
#
#   Permission to use, copy, modify, and distribute this software for
#   any purpose with or without fee is hereby granted, provided that
#   the above copyright notice and this permission notice appear in all
#   copies.
#
#   THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
#   WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
#   MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
#   IN NO EVENT SHALL THE AUTHORS AND COPYRIGHT HOLDERS AND THEIR
#   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
#   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
#   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
#   USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
#   ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
#   OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
#   OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
#   SUCH DAMAGE.
# -----------------------------------------------------------------------------
#
# Slackware SlackBuild script 
# ===========================
# By:        Eric Hameleers <alien@slackware.com>
# For:       bzr
# Descr:     Next-generation distributed version control
# URL:       http://www.bazaar-vcs.org/
# Needs:     
# Changelog:
# 0.17-1:   21/Jun/2007 by Eric Hameleers <alien@slackware.com>
#            * Initial build.
# 
# Run 'sh bzr.SlackBuild --cleanup' to build a Slackware package.
# The package (.tgz) plus descriptive .txt file are created in /tmp .
# Install using 'installpkg'. 
#
# -----------------------------------------------------------------------------

# Set initial variables:

PRGNAM=bzr
VERSION=${VERSION:-0.17}
ARCH=noarch
BUILD=${BUILD:-1}

DOCS="README TODO doc contrib tools"

# Bzr can run a series of selftests, but they are going to take a long time
# to complete, so by default I have disabled them.
# To enable, set SELFTEST="YES"
SELFTEST=${SELFTEST:-"NO"}

# Version of python this package is going to be used for:
PYTHON=$(python -c 'import sys; print sys.version[:3]')

# Where do we look for sources?
CWD=`pwd`
SRCDIR=`dirname $0`
[ "${SRCDIR:0:1}" == "." ] && SRCDIR=${CWD}/${SRCDIR}

# Place to build (TMP) package (PKG) and output (OUTPUT) the program:
TMP=${TMP:-/tmp/build}
PKG=$TMP/package-$PRGNAM
OUTPUT=${OUTPUT:-/tmp}

# Input URL: http://bazaar-vcs.org/releases/src/bzr-0.17.tar.gz
SOURCE="$SRCDIR/${PRGNAM}-${VERSION}.tar.gz"
SRCURL="http://bazaar-vcs.org/releases/src/${PRGNAM}-${VERSION}.tar.gz"

##
## --- with a little luck, you won't have to edit below this point --- ##
##

# Exit the script on errors:
set -e
trap 'echo "$0 FAILED at line $LINENO!" | tee $OUTPUT/error-${PRGNAM}.log' ERR
# Catch unitialized variables:
set -u
P1=${1:-1}

# Create working directories:
mkdir -p $TMP/tmp-$PRGNAM # location to build the source
rm -rf $TMP/tmp-$PRGNAM/* # By default we remove the remnants of previous build
mkdir -p $PKG             # place for the package to be built
rm -rf $PKG/*             # We always erase old package's contents
mkdir -p $OUTPUT          # place for the package to be saved

# Source file availability:
if ! [ -f ${SOURCE} ]; then
  if ! [ "x${SRCURL}" == "x" ]; then
    # Check if the $SRCDIR is writable at all - if not, download to $OUTPUT
    [ -w "$SRCDIR" ] || SOURCE="$OUTPUT/`basename $SOURCE`"
    echo "Source '`basename ${SOURCE}`' not available yet..."
    echo "Will download file to `dirname $SOURCE`"
    wget -nv --connect-timeout=30 -O "${SOURCE}" "${SRCURL}" || true
    if [ $? -ne 0 -o ! -s "${SOURCE}" ]; then
      echo "Downloading '`basename ${SOURCE}`' failed... aborting the build."
      mv -f "${SOURCE}" "${SOURCE}".FAIL
      exit 1
    fi
  else
    echo "File '`basename ${SOURCE}`' not available... aborting the build."
    exit 1
  fi
fi

if [ "$P1" == "--download" ]; then
  echo "Download complete."
  exit 0
fi

# --- PACKAGE BUILDING ---

echo "++"
echo "|| $PRGNAM-$VERSION"
echo "++"

cd $TMP/tmp-$PRGNAM

echo "Extracting the source archive(s) for $PRGNAM..."
if `file ${SOURCE} | grep -q ": bzip2"`; then
  tar -xjvf ${SOURCE}
elif `file ${SOURCE} | grep -q ": gzip"`; then
  tar -xzvf ${SOURCE}
fi
cd ${PRGNAM}-${VERSION}
chown -R root:root .
chmod -R u+w,go+r-w,a-s .
 
# Run a selftest (takes a _long_ time):
if [ "$SELFTEST" == "YES" ]; then
  ./bzr selftest 2>&1 |tee $OUTPUT/test-${PRGNAM}.log
fi

# Install all the needed stuff to the package dir:
mkdir -p $PKG/usr/{bin,man/man1}
python setup.py install --prefix=$PKG/usr \
  2>&1 |tee $OUTPUT/install-${PRGNAM}.log

# We don't need all of this in the package:
rm -rf $PKG/usr/lib/python${PYTHON}/site-packages/bzrlib/tests
#find $PKG/usr/lib/python${PYTHON}/site-packages -name '*.pyc' | xargs rm -f 

# Add documentation:
mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp -a $DOCS $PKG/usr/doc/$PRGNAM-$VERSION || true
chmod -R a-w $PKG/usr/doc/$PRGNAM-$VERSION/*

# Compress the man page(s):
if [ -d $PKG/usr/man ]; then
  find $PKG/usr/man -type f -name "*.?" -exec gzip -9f {} \;
fi

# Add a package description:
mkdir -p $PKG/install
cat $SRCDIR/slack-desc > $PKG/install/slack-desc

# Build the package:
cd $PKG
makepkg --linkadd y --chown n $OUTPUT/${PRGNAM}-${VERSION}-${ARCH}-${BUILD}.tgz 2>&1 | tee $OUTPUT/makepkg-${PRGNAM}.log
cd $OUTPUT
md5sum ${PRGNAM}-${VERSION}-${ARCH}-${BUILD}.tgz > ${PRGNAM}-${VERSION}-${ARCH}-${BUILD}.tgz.md5
cd -
cat $PKG/install/slack-desc | grep "^${PRGNAM}" > $OUTPUT/${PRGNAM}-${VERSION}-${ARCH}-${BUILD}.txt

# Clean up the extra stuff:
if [ "$P1" = "--cleanup" ]; then
  rm -rf $TMP/tmp-$PRGNAM
  rm -rf $PKG
fi