#!/bin/bash
#
#  eclipse.SlackBuild 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.
#
#  eclipse.SlackBuild 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
#
# SlackBuild for Eclipse (Classic)
# http://www.eclipse.org/
#
# Author: Luis ( luis at riseup d0t net )
#

# Look for slackbuildrc
if [ -f ~/.slackbuildrc ]; then
  source ~/.slackbuildrc
elif [ -f /etc/slackbuildrc ]; then
  source /etc/slackbuildrc
fi

# Set variables
CWD="$(pwd)"
SRC_NAME="eclipse"
PKG_NAME="eclipse"
ARCH=${ARCH:=i386}
SRC_VERSION=${VERSION:=R-3.4.2-200902111700}
PKG_VERSION="$(echo "$SRC_VERSION" | cut -d "-" -f 2)"
BUILD=${BUILD:=1ls}
SRC_DIR=${SRC_DIR:=$CWD}/$PKG_NAME
TMP=${TMP:=/tmp}
PKG=${PKG:=$TMP/package-$PKG_NAME}
REPOS=${REPOS:=$TMP}
PREFIX=${PREFIX:=/usr}
PKG_WORK="$TMP/$SRC_NAME"
CONF_OPTIONS=${CONF_OPTIONS:=}
NUMJOBS=${NUMJOBS:=}

# Set system libraries' path and source name
#+Also, make sure $ARCH is set either to x86_64 or to i386
if [ "$ARCH" = "x86_64" ]; then
  LIBDIR="$PREFIX/lib64"
  SRC="$SRC_NAME-SDK-$PKG_VERSION-linux-gtk-x86_64.tar.gz"
else
  LIBDIR="$PREFIX/lib"
  SRC="$SRC_NAME-SDK-$PKG_VERSION-linux-gtk.tar.gz"
  ARCH="i386"
fi

# Set error codes (used by createpkg)
ERROR_WGET=31;      ERROR_MAKE=32;      ERROR_INSTALL=33
ERROR_MD5=34;       ERROR_CONF=35;      ERROR_HELP=36
ERROR_TAR=37;       ERROR_MKPKG=38;     ERROR_GPG=39
ERROR_PATCH=40;     ERROR_VCS=41;       ERROR_MKDIR=42

# Clean up any leftovers of previous builds
rm -rf "$PKG_WORK" 2> /dev/null
rm -rf "$PKG" 2> /dev/null

# Create directories if necessary
mkdir -p "$SRC_DIR" || exit $ERROR_MKDIR
mkdir -p "$PKG" || exit $ERROR_MKDIR
mkdir -p "$REPOS" || exit $ERROR_MKDIR
mkdir -p "$PKG_WORK" || exit $ERROR_MKDIR

# Dowload source if necessary
URL="http://download.eclipse.org/eclipse/downloads/drops/$SRC_VERSION"

if [ ! -s "$SRC_DIR/$SRC" ] || ! gzip -t "$SRC_DIR/$SRC" 2> /dev/null; then
  wget "$URL/$SRC" -O "$SRC_DIR/$SRC" || exit $ERROR_WGET
fi

# Download source's MD5 checksum if necessary and check it
if [ ! -s "$SRC_DIR/$SRC.md5" ]; then
   wget "$URL/checksum/$SRC.md5" -O "$SRC_DIR/$SRC.md5" || exit $ERROR_WGET
fi

MD5SUM_SRC="$(md5sum "$SRC_DIR/$SRC" | cut -d " " -f 1)"
MD5SUM_URL="$(grep "$SRC[ \t]*$" "$SRC_DIR/$SRC.md5" | cut -d " " -f 1)"

[ "$MD5SUM_SRC" == "$MD5SUM_URL" ] || exit $ERROR_MD5

# Untar
cd "$PKG_WORK"
tar --no-same-owner --no-same-permissions -xvf "$SRC_DIR/$SRC" || exit $ERROR_TAR
PKG_SRC=`ls -l | awk '/^d/ { print $8 }'`
cd "$PKG_SRC"

# Install
mkdir -p "$PKG/$LIBDIR/eclipse-$PKG_VERSION" || exit $ERROR_MKDIR
cp -a * "$PKG/$LIBDIR/eclipse-$PKG_VERSION" || exit $ERROR_INSTALL
chown -R root:root "$PKG/$LIBDIR"
( cd "$PKG/$LIBDIR"
  ln -sf eclipse-$PKG_VERSION eclipse
)

# Install /usr/bin wrapper
mkdir -p "$PKG/$PREFIX/bin" || exit $ERROR_MKDIR
cat << EOSCRIPT > "$PKG/$PREFIX/bin/eclipse"
#!/bin/sh
exec $LIBDIR/eclipse/eclipse "\$@"
EOSCRIPT
chmod 755 "$PKG/$PREFIX/bin/eclipse"

# Strip binaries
( cd "$PKG"
  find . | xargs file | grep "executable" | grep ELF | cut -f 1 -d : | \
    xargs strip --strip-unneeded 2> /dev/null
  find . | xargs file | grep "shared object" | grep ELF | cut -f 1 -d : | \
    xargs strip --strip-unneeded 2> /dev/null
)

# Install documentation
DOCS="about.html about_files/ epl-v10.html notice.html readme/*"
mkdir -p "$PKG/$PREFIX/doc/$PKG_NAME-$PKG_VERSION" || exit $ERROR_MKDIR
cp -a $DOCS "$PKG/$PREFIX/doc/$PKG_NAME-$PKG_VERSION" 2> /dev/null

# Add package description (slack-desc)
mkdir -p "$PKG/install" || exit $ERROR_MKDIR
cat << EODESC > "$PKG/install/slack-desc"
# HOW TO EDIT THIS FILE:
# The "handy ruler" below makes it easier to edit a package description.  Line
# up the first '|' above the ':' following the base package name, and the '|'
# on the right side marks the last column you can put a character in.  You must
# make exactly 11 lines for the formatting to be correct.  It's also
# customary to leave one space after the ':'.

       |-----handy-ruler-------------------------------------------------------|
eclipse: eclipse (Eclipse Classic)
eclipse:
eclipse: Eclipse is an open source platform-independent software framework.
eclipse: Eclipse Classic includes the Eclipse Platform, Java Development
eclipse: Tools, and the Plug-in Development Environment, including source
eclipse: and both user and programmer documentation.
eclipse:
eclipse: For more information, http://www.eclipse.org/
eclipse:
eclipse:
eclipse:
EODESC

# Build the package
cd "$PKG"
makepkg -l y -c n "$REPOS/$PKG_NAME-$PKG_VERSION-$ARCH-$BUILD.tgz" || exit $ERROR_MKPKG

# Delete source and build directories if requested
if [ "$CLEANUP" == "yes" ]; then
  rm -rf "$PKG_WORK" "$PKG"
fi