pkg.sh: Evaluate pkg.run on Debian

pkg.run is not evaluated on Debian, fix that. For now it's hacked
into pkg.sh, which is bound to be replaced by Python. The limited
hassle is still worth the detour.

Signed-off-by: Jan Lindemann <jan@janware.com>

scripts/create-mkdebian.sh

@@ -128,7 +128,7 @@ _cat <<- EOT
 	|	mkdir -p \`dirname \$INSTALL_LOG\`
 	|	> \$INSTALL_LOG
 	|	\\\$(MAKE) ENV_PREFIX=\\\$(ENV_PREFIX) INSTALL_LOG=\\\$(INSTALL_LOG) install
-	|	PATH=$JWB_SCRIPT_DIR:\\\$(PATH) /bin/bash pkg.sh milk-install-log -p \\\$(ENV_PREFIX) -n \\\$(NAME) -t deb \$INSTALL_LOG \\\$(DEB_DIR)
+	|	PATH=$JWB_SCRIPT_DIR:\\\$(PATH) /bin/bash pkg.sh -m $JWB_SCRIPT_DIR milk-install-log -p \\\$(ENV_PREFIX) -n \\\$(NAME) -t deb \$INSTALL_LOG \\\$(DEB_DIR)
 	|	dh_installdirs
 	|
 	|override_dh_install:

scripts/pkg.sh

@@ -39,6 +39,21 @@ os()
 	/bin/bash $JWB_SCRIPT_DIR/get-os.sh
 }
 
+os_cascade()
+{
+	/usr/bin/python3 $JWB_SCRIPT_DIR/jw-pkg.py projects os-cascade
+}
+
+cfg_section()
+{
+	ini_section "$inifile" $@
+}
+
+cfg_escape()
+{
+	sed 's/\\/\\\\/g; s/\$/\\$/g; s/`/\\`/g'
+}
+
 scm_commit()
 {
 	case $SCM in
@@ -941,15 +956,6 @@ cmd_milk_install_log()
 		echo "$*" | sed "s/.*attr(\(LINK\|[0-9]\+\),\([^,]\+\),\([^,)]\+\)).*/\\$attr/"
 	}
 
-	milk_install_log_init_postinst()
-	{
-		cat <<- EOT > $1
-		#!/bin/sh
-
-		EOT
-		chmod 755 $1
-	}
-
 	cat_log()
 	{
 		cat $in | sed '
@@ -1048,9 +1054,28 @@ cmd_milk_install_log()
 		cat_log | grep "%config" | cleanup_line_deb | grep -ve $filter_devel > $out/conffiles.$name-run
 		cat_log | grep "%config" | cleanup_line_deb | grep -e  $filter_devel > $out/conffiles.$name-devel
 
+		# Create maintainer scripts
 		for p in run devel; do
-			postinst=$out/$name-$p.postinst
+
-			milk_install_log_init_postinst $postinst
+			local stage
+			for stage in pre preun post postun; do
+
+				case $stage in
+					pre) deb_stage=preinst;;
+					post) deb_stage=postinst;;
+					preun) deb_stage=prerm;;
+					postun) deb_stage=postrm;;
+				esac
+				local script=$out/$name-$p.$deb_stage
+
+				cat <<- EOT > $script
+				#!/bin/sh
+
+				EOT
+				chmod 755 $script
+
+				case $stage in
+					post)
 						cat $out/$name-$p.dirs $out/$name-$p.install | grep . | while read file dir; do
 							#echo read file \"$file\" >&2
 							file=`echo /$file | sed 's/inst-root\///; s%^//*%/%'`
@@ -1060,8 +1085,30 @@ cmd_milk_install_log()
 							perm=`milk_install_log_spec_attr 1 "$line"`
 							owner=`milk_install_log_spec_attr 2 "$line"`
 							group=`milk_install_log_spec_attr 3 "$line"`
-				echo "chown $owner:$group $file" >> $postinst
+							echo "chown $owner:$group $file" >> $script
-				[ "$perm" = "LINK" ] || echo "chmod $perm $file" >> $postinst
+							[ "$perm" = "LINK" ] || echo "chmod $perm $file" >> $script
+						done
+						;;
+					*)
+						;;
+				esac
+
+				echo "== processing stage $stage: cfg_section pkg.$p.$stage" >&2
+				local os content=""
+				for os in '' `os_cascade`; do
+					local sec=pkg.$p.$stage head=""
+					if [ "$os" ]; then
+						sec="$sec.$os"
+						head="\n# --- $os\n"
+					fi
+					cfg_section $sec | grep -q . || continue
+					content="$content$head`cfg_section $sec`"
+				done
+				if [ "$content" ]; then
+					echo -e "$content" >&2
+					echo -e "\n$content" | cfg_escape >> $script
+				fi
+				cat $script | grep -v '^#!/bin\|^$' | grep -q . || rm $script
 			done
 		done
 		;;
@@ -1168,9 +1215,12 @@ while [ ${1:0:1} = - ]; do
 	shift
 done
 
-[ "$JWB_SCRIPT_DIR" ]  || JWB_SCRIPT_DIR=`dirname $0`
+[ "$JWB_SCRIPT_DIR" ]  || JWB_SCRIPT_DIR="$(dirname $0)"
 [ "$PROJECT" ] || PROJECT=`abspath $TOPDIR | xargs basename`
 
+inifile=$PROJECT_DESCR_FILE
+. $JWB_SCRIPT_DIR/ini-tools.sh
+
 cmd=$1
 shift