#!/bin/bash
#
# Download and build newest GTK+ / Glade.
#
# Since Glade usually depends on the newest GTK+-library, GTK+ and most of its
# dependencies have to be built before Glade can be built. This script tries
# to simplify this procedure. It does:
#
# - download sourcecode of Glade/GTK+ and its dependencies
# - compile/install the dependencies in the right order
# - compile/install Glade
#
# Note that this it not related to the Glade/GTK+-maintainers.
#
# :Author:  Roland Koebler <rk@simple-is-better.org>
# :Version: 2014-06-10 (alpha)

shopt -s nullglob
set -e

echo "glade_build.sh: Download/build/install newest Glade incl. dependencies."
echo "Version 2014-06-10, Author: Roland Koebler (rk@simple-is-better.org)"
echo

#=========================================
# configuration
read -p "== Glade and GTK+, or only GTK+?
0) GTK+ 3 and Glade
1) only GTK+ 3
(0/1, default: 0) " TEST
if [[ -z "$TEST" ]] || [[ "$TEST" == "0" ]]; then
    GLADE=1
elif [[ "$TEST" == "1" ]]; then
    GLADE=0
else
    echo "ERROR: Invalid choice '$TEST', must be 0, 1 or empty."
    exit 1
fi

#=========================================
# download

# wget_latest "http://...3.18/" "LATEST-IS" "glade" ".tar.xz" "sha256"
wget_latest() {
    DIR="$1"
    LATEST="$2"
    NAME="$3"
    EXT="$4"
    SUM="$5"
    echo "== $NAME..."
    VERSION=$(wget "$DIR" -O - | grep "$LATEST-" | tail -n 1 | sed "s/^.*\"$LATEST-\([-0-9\.]*[0-9]\).*/\1/")
    wget -c "$DIR/$NAME-$VERSION.$EXT"
    if [[ -n "$SUM" ]]; then
	wget -c "$DIR/$NAME-$VERSION.$SUM"
	if [[ "$SUM" == "sha1" ]] || [[ "${SUM##*.}" == "sha1" ]]; then
	    sha1sum -c "$NAME-$VERSION.$SUM"
	else
	    tail -n 1 "$NAME-$VERSION.$SUM" | sha256sum -c
	fi
    fi
}

read -p "== Download glade and its dependencies? " TEST
if [[ "$TEST" == [yY] ]]; then
    if [[ "$GLADE" == "1" ]]; then
    wget_latest http://ftp.gnome.org/pub/GNOME/sources/glade/3.18/      "LATEST-IS" "glade"      "tar.xz" "sha256sum"
    fi
    wget_latest http://ftp.gnome.org/pub/gnome/sources/gtk+/3.12/       "LATEST-IS" "gtk+"       "tar.xz" "sha256sum"
    wget_latest http://ftp.gnome.org/pub/gnome/sources/glib/2.40/       "LATEST-IS" "glib"       "tar.xz" "sha256sum"
    wget_latest http://ftp.gnome.org/pub/gnome/sources/atk/2.12/        "LATEST-IS" "atk"        "tar.xz" "sha256sum"
    wget_latest http://ftp.gnome.org/pub/gnome/sources/gdk-pixbuf/2.30/ "LATEST-IS" "gdk-pixbuf" "tar.xz" "sha256sum"
    wget_latest http://ftp.gnome.org/pub/gnome/sources/pango/1.36/      "LATEST-IS" "pango"      "tar.xz" "sha256sum"
    wget_latest http://ftp.gnome.org/pub/gnome/sources/gobject-introspection/1.40/ "LATEST-IS" "gobject-introspection" "tar.xz" "sha256sum"
    wget_latest http://www.cairographics.org/releases/                  "LATEST-cairo"  "cairo"  "tar.xz" "tar.xz.sha1"
    wget_latest http://www.cairographics.org/releases/                  "LATEST-pixman" "pixman" "tar.gz" "tar.gz.sha1"
    wget_latest http://www.freedesktop.org/software/fontconfig/release/ "fontconfig"       "fontconfig"       "tar.bz2"
    wget_latest http://www.freedesktop.org/software/harfbuzz/release/   "harfbuzz"         "harfbuzz"         "tar.bz2" "tar.bz2.sha256"
    #wget_latest http://people.freedesktop.org/~hadess/                  "shared-mime-info" "shared-mime-info" ".tar.xz"
    # libiconf http://www.gnu.org/software/libiconv/
    # gettext
    # x-window-system-dev
    # libpng, freetype, libxml
    echo
fi

#=========================================
# configuration
MYHOME=~
read -p "== Install-directory-prefix (default: $MYHOME/local): " TEST
if [[ -z "$TEST" ]]; then
    PREFIX=~/local
else
    PREFIX="$TEST"
fi
echo "-> install-dir-prefix: '""$PREFIX""'"
echo

#=========================================
# compile/install

# set +e

CPPFLAGS=-I$PREFIX/include
LDFLAGS=-L$PREFIX/lib
PKG_CONFIG_PATH=$PREFIX/lib/pkgconfig
LD_LIBRARY_PATH=$PREFIX/lib
PATH="$PREFIX/bin:$PATH"
export CPPFLAGS LDFLAGS PKG_CONFIG_PATH
export LD_LIBRARY_PATH PATH

# dependencies:

# - (shared-mime-info)
# - GLib: shared-mime-info, (libiconf, gettext, pkgconfig, (libffi, libattr, libselinux))
#
# - ATK: GLib
# - gdk-pixbuf: GLib, libpng, ...
# - GObject-introspection: GLib?
#
# - pixman: --
# - fontconfig: FreeType, expat
#
# - Cairo: pixman, fontconfig, libpng, FreeType, libx11, ...
#	   (libz/zlib, libxrender, automake, autoconf, autoheader, aclocal, libtoolize, pkg-config >= 0.16)
#
# - HarfBuzz: Cairo, FreeType, GLib, graphite2?
#
# - Pango: HarfBuzz, Cairo (or Xft), fontconfig, FreeType, ... 
#
# - GTK+: GLib, gobject-instrospection, ATK, GdkPixbuf, Pango, Cairo, freetype, shared-mime-info, ...
#
# - glade: GLib, GTK+, libxml, ...

read -p "== Compile/install all? " TEST
if [[ "$TEST" == [yY] ]]; then
    ALL=1
    TEST="y"
else
    ALL=0
fi

for name in "glib-" "atk-" "gdk-pixbuf-" "gobject-introspection-" "pixman-" "fontconfig-" "cairo-" "harfbuzz-" "pango-" "gtk+-" "glade-"; do
    file=""
    DIR=$(pwd)

    if [[ "$GLADE" == "0" ]] && [[ "$name" == "glade-" ]]; then
	continue
    fi

    # find latest file
    for f in "$name"*.{xz,gz,bz2}; do
	file="$f"
    done
    if [ -z "$file" ]; then
	continue
    fi
    # unpack/compile
    if [[ "$ALL" == "0" ]]; then
	read -p "== Compile $file? " TEST
    fi
    if [[ "$TEST" == [yY] ]]; then
	dir="${file%.*.*}"
	if [[ ! -e "$dir" ]]; then
	    echo "--- Unpacking $file..."
	    tar -xf "$file"
	fi
	echo "--- Compiling $dir..."
	cd "$dir"
	./configure --prefix="$PREFIX" && make
	echo
    else
	continue
    fi
    # install
    if [[ "$ALL" == "0" ]]; then
	read -p "== Install $dir? " TEST
    fi
    if [[ "$TEST" == [yY] ]]; then
	make install
    fi
    echo
    cd "$DIR"
done

#=========================================
# install

if [[ "$GLADE" == "1" ]]; then
    echo "== Creating glade.sh..."
    cat << EOF > glade.sh
export PKG_CONFIG_PATH="$PREFIX/lib/pkgconfig/"
export LD_LIBRARY_PATH="$PREFIX/lib/"
export GSETTINGS_SCHEMA_DIR="$PREFIX/share/glib-2.0/schemas/"
export PATH="$PREFIX/bin:$PATH"
glade
EOF
    chmod a+x glade.sh
    echo
    echo "Call './glade.sh' to start glade."
fi

#=========================================