python-tools.sh, py-mod.mk: Use --symbol-filter

make/py-mod.mk

@@ -6,6 +6,10 @@ include $(JWBDIR)/make/dev-utils.mk
 PY_INIT_TMPL                 = $(wildcard __init__.py.tmpl)
 PY_SED_EXTRACT_EXPORT       ?= /\(\(class\|def\)\s\+[a-zA-Z_].*\|^ *\S\+\s*=.*\)\# *export/ !d; /^\s*\#/ d; s/\(async\)* *\(class\|def\) *//; s/[(:=].*//
 PY_INIT_FILTER              ?= cat
+PY_GENERATE_INIT_PY         ?= /bin/bash $(JWB_SCRIPT_DIR)/python-tools.sh create-init -m . -e "$(PY_SED_EXTRACT_EXPORT)"
+ifneq ($(PY_SYMBOL_FILTER),)
+	PY_GENERATE_INIT_PY += --symbol-filter "$(PY_SYMBOL_FILTER)"
+endif
 
 #leftparen                  := (
 #PY_EXPORT                  ?= $(shell sed '/\(class\|def\) ..*\# *export/ !d; s/\(class\|def\) *//; s/[$(leftparen):].*//' $(PY_SRC_PY))
@@ -20,7 +24,7 @@ include $(JWBDIR)/make/py-rules.mk
 ifeq ($(PY_UPDATE_INIT_PY),true)
 __init__.py: $(PY_INIT_TMPL) $(filter-out __init__.py,$(PY_SRC_PY))
 	if [ "$(PY_INIT_TMPL)" ]; then cat "$(PY_INIT_TMPL)" > $@.tmp; else > $@.tmp; fi
-	set -e -o pipefail; /bin/bash $(JWB_SCRIPT_DIR)/python-tools.sh create-init -m . -e "$(PY_SED_EXTRACT_EXPORT)" \
+	set -e -o pipefail; $(PY_GENERATE_INIT_PY) \
 		$(filter-out __init__.py,$(PY_ALL_PY)) $(SUBDIRS_TO_ITERATE) | $(PY_INIT_FILTER) | tee -a $@.tmp
 	mv $@.tmp $@
 endif

scripts/python-tools.sh

@@ -34,6 +34,12 @@ module_path()
 
 cmd_create_init()
 {
+	__add_seen() {
+		local type="$1"
+		[[ -n "${seen[$type]+x}" ]] && fatal "Duplicate symbol: $type"
+		seen["$type"]=1
+	}
+
 	local import_submodules=0
 	local files="$*"
 	local del="-------------------------- generated by $myname"
@@ -42,26 +48,43 @@ cmd_create_init()
 	echo "from pkgutil import extend_path"
 	echo ""
 	echo "__path__ = extend_path(__path__, __name__)"
+	echo
 	local f
 	local -A seen=()
+	local dst_type
 	for f in $files; do
 		test -d $f && continue
 		local base=${f##*/}
 		base=${base%.py}
-		if [ "$sed_extract_command" ]; then
-			local type types=`sed "$sed_extract_command" $f`
-			for type in $types; do
-				echo "from `module_path $base` import $type as $type"
-				[[ -n "${seen[$type]+x}" ]] && fatal "Duplicate symbol: $type"
-				seen["$type"]=1
+		if [ "$sed_extract_cmd" ]; then
+			local src_type types=$(sed "$sed_extract_cmd" $f)
+			for src_type in $types; do
+				if [ -z "$sed_symbol_filter_cmd" ]; then
+					dst_type="$src_type"
+				else
+					dst_type=$(echo $base $src_type | sed "$sed_symbol_filter_cmd")
+				fi
+				[ "$sed_symbol_filter_cmd" ] && dst_type=$(echo $base $src_type | sed "$sed_symbol_filter_cmd")
+				echo "from `module_path $base` import $src_type as $dst_type"
+				__add_seen $dst_type
 			done
 		fi
 	done
 	if [ "$import_submodules" = 1 ]; then
 		for f in $files; do
-			[ -f $f/__init__.py ] && echo "import `module_path $f` as $f"
+			[ -f $f/__init__.py ] || continue
+			echo "import `module_path $f` as $f"
+			__add_seen $f
 		done
 	fi
+
+	echo
+	echo "__all__ = ["
+	for dst_type in ${!seen[@]}; do
+		echo "    \"$dst_type\","
+	done
+	echo "]"
+
 	echo "# << $del <<"
 }
 
@@ -69,11 +92,15 @@ cmd_create_init()
 
 myname=`basename $0`
 
-eval set -- `getopt -o 'he:m:' "$@"`
+eval set -- `getopt -l 'symbol-filter:' -o 'he:m:' "$@"`
 while [ "$1" != -- ]; do
 case $1 in
 	-e)
-		sed_extract_command="$2"
+		sed_extract_cmd="$2"
+		shift
+		;;
+	--symbol-filter)
+		sed_symbol_filter_cmd="$2"
 		shift
 		;;
 	-m)