new version of eselect module, first shot at supporting Ada libs

Package-Manager: portage-2.1_pre10-r2

4 files changed, 287 insertions, 0 deletions

diff --git a/app-admin/eselect-gnat/files/digest-eselect-gnat-0.5 b/app-admin/eselect-gnat/files/digest-eselect-gnat-0.5
index e69de29bb2d1..8b137891791f 100644
--- a/app-admin/eselect-gnat/files/digest-eselect-gnat-0.5
+++ b/app-admin/eselect-gnat/files/digest-eselect-gnat-0.5
@@ -0,0 +1 @@
+
diff --git a/app-admin/eselect-gnat/files/digest-eselect-gnat-0.6 b/app-admin/eselect-gnat/files/digest-eselect-gnat-0.6
index e69de29bb2d1..8b137891791f 100644
--- a/app-admin/eselect-gnat/files/digest-eselect-gnat-0.6
+++ b/app-admin/eselect-gnat/files/digest-eselect-gnat-0.6
@@ -0,0 +1 @@
+
diff --git a/app-admin/eselect-gnat/files/digest-eselect-gnat-0.7 b/app-admin/eselect-gnat/files/digest-eselect-gnat-0.7
new file mode 100644
index 000000000000..8b137891791f
--- /dev/null
+++ b/app-admin/eselect-gnat/files/digest-eselect-gnat-0.7
@@ -0,0 +1 @@
+
diff --git a/app-admin/eselect-gnat/files/gnat.eselect-0.7 b/app-admin/eselect-gnat/files/gnat.eselect-0.7
new file mode 100644
index 000000000000..1172b8a8994e
--- /dev/null
+++ b/app-admin/eselect-gnat/files/gnat.eselect-0.7
@@ -0,0 +1,284 @@
+# Copyright 1999-2005 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+# $Id: gnat.eselect-0.7,v 1.1 2006/05/02 10:18:57 george Exp $
+
+DESCRIPTION="Manage the talled gnat compilers"
+MAINTAINER="ada@gentoo.org"
+SVN_DATE='$Date: 2006/05/02 10:18:57 $'
+VERSION=$(svn_date_to_version "${SVN_DATE}" )
+
+SPECSDIR="/usr/share/gnat/eselect"
+ENVDIR="/etc/env.d"
+MARKER="55gnat-"
+#LibMarker="56"
+
+### Phylosophy
+# Each gnat installs a "specs" file named ${ARCH}-${PN}-${SLOT} under ${SPECSDIR}
+# Each lib creates a dir with its name under ${SPECSDIR} and populates it with
+# similar specs files (same name scheme)
+# Recognizing gnat specs from lib specs is then eazy - test entry for being a
+# dir, then just check what gnat profiles are installed for each lib..
+# doset then creates env file that combines settings for gnat and for the
+# corresponding profile of each installed lib..
+
+
+### Helpers
+
+# create a list of all gnat env.d files
+# for now use trivial implementation - store name of active profile in the
+# env file name, so it gets called 55gnat-${ARCH}-${PN}-${SLOT}
+get_env_list() {
+	for fn in ${ENVDIR}/${MARKER}*; do
+		echo $(basename ${fn})
+	done
+}
+
+# return *the* name of the active profile, checking that we do not have multiple
+# env files.
+# There can be only one!
+get_current_gnat() {
+	local profiles=( $(get_env_list) ) 
+
+	if [ ${profiles[@]} == "${MARKER}*" ]; then exit; fi
+
+	if (( 1 == ${#profiles[@]} )); then
+		local active=${profiles[0]#${MARKER}}
+	else
+		die -q "${ENVDIR} contains multiple gnat profiles, please cleanup!"
+	fi
+
+	if [ -f ${SPECSDIR}/${active} ]; then
+		echo ${active}
+	else
+		die -q "the active env.d profile does not correspond to any installed gnat!"
+	fi
+}
+
+# find installed compilers and return a list
+find_compilers() {
+	[ ! -d ${SPECSDIR} ] && exit
+	for fn in ${SPECSDIR}/*; do
+		[ ! -d ${fn} ] && echo $(basename ${fn});
+	done
+}
+
+# find installed libs and return a list
+find_all_libs() {
+	[ ! -d ${SPECSDIR} ] && exit
+	for fn in ${SPECSDIR}/*; do
+		[ -d ${fn} ] && echo $(basename ${fn});
+	done
+}
+
+# find libs that have been built for a given profile
+# Arguments:
+#  $1 - gnat profile for which to detect active libs
+find_libs4profile() {
+	libs=( $(find_all_libs) )
+
+	for (( i = 0 ; i < ${#libs[@]} ; i = i + 1 )) ; do
+		[ -f ${SPECSDIR}/${libs[$i]}/$1 ] && echo "${libs[$i]}"
+	done
+}
+
+# check if the passed arg represents the installed gnat and return it or
+# not_found
+# takes args:
+# $1 - list ID to check
+get_name_from_list() {
+    compiler=$1
+
+    compilers=( $(find_compilers) )
+    for (( i = 0 ; i < ${#compilers[@]} ; i = i + 1 )) ; do
+        if [[ ${compilers[$i]} == ${compiler} ]] ; then
+            echo ${compiler}
+            return
+        fi
+    done
+
+    echo "(not-found)"
+}
+
+
+# extracts values of the passed var definition from given spec file
+# params:
+# $1: spec file (as generated by gnabuild.eclass)
+# $2: variable name
+get_var_from_spec() {
+	local var=$(grep -e "^ *$2=" $1|cut -d= -f2)
+	echo ${var}
+}
+
+
+# Cycle through given libs and form a : separated list of settings for the given
+# var. Returned string starts with ":" if there is any non-empty setting,
+# otherwise returns empty string
+# params:
+#   $1 - list of libs to check (to avoid its composition every time)
+#   $2 - name of gnat profile
+#   $3 - name of env var to process
+get_lib_var_settings() {
+	local libList=$1
+	#echo "get_lib_var_settings: ${libList[@]}" >> rep.rep
+	if  [[ ! ${libList[0]} == "none" ]]; then
+
+		local envString
+		for (( i = 0 ; i < ${#libList[@]} ; i = i + 1 )) ; do
+			#echo "lib $i = ${libList[$i]}" >> rep.rep
+			specLine=$(get_var_from_spec ${SPECSDIR}/${libList[$i]}/$2 $3)
+			[[ -n ${specLine} ]] && envString="${envString}:${specLine}"
+		done
+		echo "${envString}"
+	fi
+}
+
+
+# removes env files (for compiler and libs)
+# params:
+# $1: the name of profile for which to remove env file
+unset_env() {
+	rm -f ${ENVDIR}/${MARKER}$1 &> /dev/null
+}
+
+
+# Stuff common for do_set and do_update
+#
+# params:
+#  $1 - profile to set (toset param inside)
+#  $2 - envfile
+
+generate_envFile() {
+	local toset=$1
+	local envfile=$2
+
+	local binpath="$(get_var_from_spec ${SPECSDIR}/${toset} binpath)"
+	local libexecpath="$(get_var_from_spec ${SPECSDIR}/${toset} libexecpath)"
+    local libs=( $(find_libs4profile ${toset}) )
+	if (( 0 == ${#libs[@]} )); then
+		libs="none"
+	fi
+
+	echo "PATH=${binpath}:${libexecpath}$(get_lib_var_settings ${libs} ${toset} "PATH")" > "${envfile}"
+	echo "MANPATH=$(get_var_from_spec ${SPECSDIR}/${toset} manpath)$(get_lib_var_settings ${libs} ${toset} "MANPATH")" >> "${envfile}"
+	echo "INFOPATH=$(get_var_from_spec ${SPECSDIR}/${toset} infopath)$(get_lib_var_settings ${libs} ${toset} "INFOPATH")" >> "${envfile}"
+	echo "ADA_INCLUDE_PATH=$(get_var_from_spec ${SPECSDIR}/${toset} ldpath)/adainclude$(get_lib_var_settings ${libs} ${toset} "ADA_INCLUDE_PATH")" >> "${envfile}"
+	echo "ADA_OBJECTS_PATH=$(get_var_from_spec ${SPECSDIR}/${toset} ldpath)/adalib$(get_lib_var_settings ${libs} ${toset} "ADA_OBJECTS_PATH")" >> "${envfile}"
+}
+
+### show action ###
+
+describe_show() {
+	echo "Show the active gnat compiler/profile and installed libs"
+}
+
+do_show() {
+	write_list_start "Current gnat version:"
+	active=$(get_current_gnat)
+	if [ ! -z ${active} ] ; then # not sure why [ -n ] does not do the same
+		write_kv_list_entry "$active" ""
+		libs=( $(find_libs4profile) )
+		write_list_start "Active libs:"
+		write_numbered_list "${libs[@]}"
+	else
+		write_kv_list_entry "(none set)" ""
+	fi
+}
+
+### list action ###
+
+describe_list() {
+	echo "List installed gnat compilers and libs"
+}
+
+do_list() {
+	compilers=( $(find_compilers ) )
+	active=$(get_current_gnat)
+
+	write_list_start "Available gnat compilers:"
+
+	if [[ -n ${compilers[@]} ]] ; then
+		local i
+		for (( i = 0 ; i < ${#compilers[@]} ; i = i + 1 )) ; do
+			linkversion=${compilers[${i}]}
+
+			[[ $linkversion == $active ]] && \
+				compilers[${i}]="${compilers[${i}]} $(highlight '*' )"
+		done
+		write_numbered_list "${compilers[@]}"
+	else
+		write_kv_list_entry "(none found)" ""
+	fi
+}
+
+
+### set action ###
+
+describe_set() {
+	echo "Set active gnat compiler"
+}
+
+# The set action. Parameters:
+# $1 - name of profile to set, obligatory, passed by eselect
+# $2 - optional, name of env file to generate. Used from gnat.eclass.
+do_set() {
+	if [[ -z ${1} ]] ; then
+		# no parameter
+		die -q "You didn't tell me which gnat to use"
+	fi
+
+	local toset=$(get_name_from_list $1)
+	if [[ ${toset} == "(not-found)" ]] ; then
+		die -q "I don't recognise the selection"
+	fi
+
+	# the action!
+	# in this implementation simply create an appropriate env file
+	local active=$(get_current_gnat)
+	if [[ -z ${2} ]] ; then
+		local envfile="${ENVDIR}/${MARKER}${toset}"
+
+		# now we need to remove an old env file, which is guaranteed to 
+		# be unique by get_current_gnat above
+		if [[ -n ${active} ]] ; then
+			unset_env ${active}
+		fi
+		# just for a good measure remove the one we are going to write
+		unset_env ${toset}
+	else
+		local envfile="$2"
+	fi
+
+	generate_envFile ${toset} ${envfile}
+}
+
+
+
+### update action ###
+#
+# This action regenerates the /etc/env.d file for the current profile. Basically
+# the same as set, only it does not take any parameters. It should be called from ebuilds
+# installing Ada libs
+
+describe_update() {
+	echo "Update active gnat profile picking up new libs."
+}
+
+do_update() {
+	local toset=$(get_current_gnat)
+	local envfile="${ENVDIR}/${MARKER}${toset}"
+	generate_envFile ${toset} ${envfile}
+}
+
+### unset action ###
+
+describe_unset() {
+	echo "Remove settings for currently active gnat"
+}
+
+do_unset() {
+	local active=$(get_current_gnat)
+	# check whether we have any profile set before removing anything..
+	if [[ -n ${active} ]] ; then
+		unset_env ${active}
+	fi
+}