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# Copyright 1999-2007 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header
#
# Version: 0.11 (2008-06-06)
# Authors: Markus Dittrich <markusle@gentoo.org>
#
# The octave-forge eclass installs and manages the split
# octave-forge packages. In a nutshell, it does two things:
# 1) Compile (if necessary) and install individual octave-forge
# packages
# 2) Add/Remove the octave-forge package and its description
# from the database file in
# /usr/share/octave/octave_packages
# such that octave knows what octave-forge packages are
# installed and what functionality they provide.
#
# The individual octave-forge packages should only need to inherit
# this eclass and possible have some additional dependencies and/or
# custom patches.
#
HOMEPAGE="http://octave.sourceforge.net"
SLOT="0"
LICENSE="GPL-2"
inherit eutils
EXPORT_FUNCTIONS src_unpack src_compile src_install pkg_postinst pkg_prerm
# unless requested otherwise we're happy with octave-3.0.0
NEED_OCTAVE=${NEED_OCTAVE:-3.0.0}
DEPEND="${DEPEND}
>=sci-mathematics/octave-${NEED_OCTAVE}
|| ( >=sys-apps/coreutils-6.10-r1 sys-apps/mktemp )"
RDEPEND="${RDEPEND}
>=sci-mathematics/octave-${NEED_OCTAVE}"
#################################################################
# define global paths needed for the install
#################################################################
OCT_PKG=${P#octave-forge-}
OCT_PKG_TARBALL="${OCT_PKG}.tar.gz"
OCT_INSTALL_ROOT="/usr/share/octave"
OCT_INSTALL_PKG="${OCT_INSTALL_ROOT}/packages/${OCT_PKG}"
OCT_INSTALL_PATH="${OCT_INSTALL_ROOT}/packages"
OCT_BINARY=$(type -p octave)
OCT_DATABASE="${OCT_INSTALL_ROOT}/octave_packages"
OCT_DESC="${OCT_INSTALL_PKG}/packinfo/DESCRIPTION"
S="${WORKDIR}/${OCT_PKG}"
#################################################################
# extract package description from the DESCRIPTION file into
# a bash array so we can use it later to update the octave
# database
#################################################################
get_description()
{
local count=0
local tracker=0
local line
while read line
do
if [[ "${line}" == *:* ]]; then
keys[${count}]=$(echo "${line}" | cut -f1 -d: | sed -e "s: $::g" | gawk '{ print tolower($1)}')
values[${count}]=$(echo "${line}" | cut -f2 -d: | sed -e "s:^ ::g")
if [[ ${keys[count]} == "depends" ]]; then
tracker=${count}
fi
(( count++ ))
fi
done < "${OCT_DESC}"
# further separate depend string
local depend_value=${values[tracker]}
depend_value=${depend_value/\(/}
depend_value=${depend_value/\)/}
pkg_name=$(echo ${depend_value} | cut -d' ' -f1)
operator=$(echo ${depend_value} | cut -d' ' -f2)
version=$(echo ${depend_value} | cut -d' ' -f3)
}
################################################################
# this function uses the DESCRIPTION file parsed into a bash
# array to update the octave package database via creating
# a temporary octave file and calling octave on it
################################################################
add_pkg_to_database()
{
# read properties from DESCRIPTION file
declare -a keys
declare -a values
get_description
# securely generate tmp file
OCT_TMP=$(mktemp ${T}/generate-database.XXXXXXXXXX) \
|| die "Failed to generate temporary file."
if [ -e "${OCT_DATABASE}" ]; then
echo "global_packages = load (\"${OCT_DATABASE}\").global_packages;" >> "${OCT_TMP}"
else
echo "global_packages = {};" >> "${OCT_TMP}"
fi
echo "new_package = struct();" >> "${OCT_TMP}"
# path to parent of directory holding mex/oct files
local libexec_dir="${OCT_INSTALL_PKG}"
echo "new_package.archprefix = \"${libexec_dir}\";" \
>> "${OCT_TMP}"
for ((count=0; count < ${#keys[*]}; count++)); do
# the depend string needs a separate struct
if [[ ${keys[count]} == "depends" ]]; then
echo "temp = struct(\"operator\",\"${operator}\",\"package\",\"${pkg_name}\",\"version\",\"${version}\");" >> "${OCT_TMP}"
echo "foo = {temp};" >> "${OCT_TMP}"
echo "new_package.depends = foo;" >> "${OCT_TMP}"
elif [[ ${keys[count]} == "name" ]]; then
echo "new_package.${keys[count]} = lower(\"${values[count]}\");" >> "${OCT_TMP}"
else
echo "new_package.${keys[count]} = \"${values[count]}\";" >> "${OCT_TMP}"
fi
done
cat >> "${OCT_TMP}" <<-EOF
new_package.dir = "${OCT_INSTALL_PKG}";
global_packages = { global_packages{:}, new_package};
save("${OCT_DATABASE}","global_packages");
EOF
# let octave do the final setup of the database file
echo
ebegin "Adding package to global octave database."
"${OCT_BINARY}" -q "${OCT_TMP}" >& /dev/null
eend $?
echo
# remove the temporary octave file
rm -f "${OCT_TMP}" \
|| die "Failed to remove temporary octave database code."
}
#################################################################
# this function removes an octave-forge package from the
# global octave package database
#################################################################
delete_pkg_from_database()
{
# read properties from DESCRIPTION file
declare -a keys
declare -a values
get_description
local remove_name
for ((count=0; count < ${#keys[*]}; count++)); do
if [[ ${keys[count]} == "name" ]]; then
remove_name=${values[count]}
fi
done
# securely generate tmp file
OCT_TMP=$(mktemp ${T}/generate-database.XXXXXXXXXX) || \
die "Failed to generate temporary file."
# generate octave code to remove relevant entry from
# global file
cat >> "${OCT_TMP}" <<-EOF
old_packages = load ("${OCT_DATABASE}").global_packages;
global_packages = {};
purge_name = lower("${remove_name}");
for i=1:length(old_packages);
if ( !strcmp(old_packages{i}.name,purge_name));
global_packages = {global_packages{:}, old_packages{i}}; endif; endfor;
save ("${OCT_DATABASE}","global_packages");
EOF
# let octave do the final setup of the database file
echo
ebegin "Removing from database"
"${OCT_BINARY}" -q "${OCT_TMP}" >& /dev/null
eend $?
echo
# if the database file is empty we get rid of it completely
# otherwise octave will be confused. To check if it is empty,
# we simply test if there are any author fields remaining.
fgrep 'author' "${OCT_DATABASE}" >& /dev/null
if [[ $? == 1 ]]; then
ebegin "Purging empty database"
rm -f "${OCT_DATABASE}"
eend $?
fi
echo
# remove the temporary octave file
rm -f "${OCT_TMP}" \
|| die "Failed to remove temporary octave database code."
}
#################################################################
# since we use octave's package installed for compiling we need
# to provide the raw gzipped octave-forge source tarballs.
# Hence, if there are no patches to apply, we simply copy the
# tarball to ${WORKDIR}. If there are patches we unpack
# the tarball in ${WORKDIR}, apply the patches, and repack it.
#################################################################
octave-forge_src_unpack() {
cd "${WORKDIR}"
if [[ -n "${PATCHES}" ]]; then
unpack "${A}"
pushd "${S}" >& /dev/null
for patch in "${PATCHES}"; do
epatch "${FILESDIR}/${patch}"
done
popd >& /dev/null
tar czf "${OCT_PKG_TARBALL}" "${OCT_PKG}" \
&& rm -fr "${OCT_PKG}" \
|| die "Failed to recompress the source"
else
cp "${DISTDIR}/${OCT_PKG_TARBALL}" ./
fi
}
####################################################################
# use octave's pkg add command to do the compilation
####################################################################
octave-forge_src_compile() {
cd "${WORKDIR}"
# securely generate tmp file
OCT_TMP=$(mktemp ${T}/octave-install.XXXXXXXXXX) || \
die "Failed to generate temporary file."
# generate octave code to remove relevant entry from
# global file
cat >> "${OCT_TMP}" <<-EOF
pkg prefix "${WORKDIR}" "${WORKDIR}"
pkg install -verbose -local ${OCT_PKG_TARBALL}
EOF
# let octave do the final setup of the database file
einfo "Compiling ${P}. Please be patient ...."
"${OCT_BINARY}" -q "${OCT_TMP}" || die "Failed to compile package"
# remove the temporary octave file
rm -f "${OCT_TMP}" \
|| die "Failed to remove temporary octave database code."
}
####################################################################
# install the compiled files
####################################################################
octave-forge_src_install() {
cd "${WORKDIR}"
insinto ${OCT_INSTALL_PATH}
doins -r ${OCT_PKG} || die "Failed to install files."
# make .oct, .mex, *.so files executable
# we don't die after the finds since chmod will complain
# if there aren't any files to act on
target="${D}"${OCT_INSTALL_PATH}/${OCT_PKG}
find ${target} -type f -name "*.oct" -print0 \
| xargs -0 chmod 0755 >& /dev/null
find ${target} -type f -name "*.mex" -print0 \
| xargs -0 chmod 0755 >& /dev/null
find ${target} -type f -name "*.so" -print0 \
| xargs -0 chmod 0755 >& /dev/null
}
##################################################################
# after installation, add package to global octave database
##################################################################
octave-forge_pkg_postinst() {
add_pkg_to_database
}
##################################################################
# after unmerging, remove package from global octave database
##################################################################
octave-forge_pkg_prerm() {
delete_pkg_from_database
}
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