#!/bin/bash
#
# SlackBuild for GTKWave
# http://home.nc.rr.com/gtkwave/
#
# 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="$(pwd)"
SRC_NAME="gtkwave"
PKG_NAME="gtkwave"
ARCH="i486"
VERSION=   # Only the -current version is available for download.
           #+The version being built can only be defined after
           #+decompressing the downloaded source.
BUILD=${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_SRC="$TMP/$SRC_NAME"-3.*

# 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 "$PKG_SRC" 2> /dev/null
rm -rf "$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

# Dowload source if necessary
SRC="$SRC_NAME-current.tar.gz"
URL="http://home.nc.rr.com/gtkwave/$SRC"

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

# Check if GTKWave should be built for GTK+-2.x (default,
#+if both are available) or 1.x
pkg-config gtk+-2.0 --libs 1> /dev/null 2> /dev/null
if [ $? == 0 ]; then
  GTK_VERSION=2
else
  gtk-config --libs 1> /dev/null 2> /dev/null
  if [ $? == 0 ]; then
    GTK_VERSION=1
  else
    echo "ERROR: GTKWave requires either GTK+-1.x or 2.x"
    exit $ERROR_CONF
  fi
fi

# Untar
cd "$TMP"
tar --no-same-owner --no-same-permissions -xvf "$SRC_DIR/$SRC" || exit $ERROR_TAR
cd "$PKG_SRC"

# Define $SRC_ and $PKG_VERSION
SRC_VERSION="$(ls -d "$SRC_DIR/$SRC_NAME"-3.* | cut -d "-" -f 2)"
PKG_VERSION="$(echo "$SRC_VERSION" | tr '[[:blank:]-]' '_')"

# Configure
echo $GTK_VERSION | ./configure || exit $ERROR_CONF

# Compile
make || exit $ERROR_MAKE

# Install
make install prefix="$PKG/$PREFIX" || exit $ERROR_INSTALL

# 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
)

# Compress and link manpages
if [ -d "$PKG/$PREFIX/man" ]; then
  ( cd "$PKG/$PREFIX/man"
    for manpagedir in $(find . -type d -name "man*") ; do
      ( cd $manpagedir
        for eachpage in $( find . -type l -maxdepth 1) ; do
          ln -s $( readlink $eachpage ).gz $eachpage.gz
          rm $eachpage
        done
        gzip -9 *.?
      )
    done
  )
fi

# Install documentation and examples
DOCS="*.TXT doc/gtkwave.odt examples"
mkdir -p "$PKG/$PREFIX/doc/$PKG_NAME-$PKG_VERSION" || exit $ERROR_MKDIR
cp -a $DOCS "$PKG/$PREFIX/doc/$PKG_NAME-$PKG_VERSION"

# 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-------------------------------------------------------|
gtkwave: gtkwave 
gtkwave:
gtkwave: GTKWave is a viewer for VCD (Value Change Dump) files which are
gtkwave: usually created by digital circuit simulators. It can also read
gtkwave: LXT, LXT2, VZT, and GHW files.
gtkwave:
gtkwave: For more information, http://home.nc.rr.com/gtkwave/
gtkwave:
gtkwave:
gtkwave:
gtkwave:
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_SRC" "$PKG"
fi