From 09a69f08d83ad23e806f0412fbc3f98b1410b115 Mon Sep 17 00:00:00 2001
From: Andre Noll <maan@systemlinux.org>
Date: Sun, 28 Aug 2011 06:34:55 +0200
Subject: [PATCH] Teach command_util to print also completions.

This adds completion mode to command_util.sh. When exectuted in this
mode, it prints array initializers for all supported commands. This
will be used to generate the array of completers for para_client and
para_audiod.
---
 .gitignore      |  1 +
 Doxyfile        |  3 ++-
 Makefile.in     | 16 ++++++++++++++--
 command_util.sh | 28 ++++++++++++++++++++++++++++
 4 files changed, 45 insertions(+), 3 deletions(-)

diff --git a/.gitignore b/.gitignore
index 91c6f858..d337367b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -31,3 +31,4 @@ confdefs.h
 conftest
 conftest.c
 git-version.h
+*_completion.h
diff --git a/Doxyfile b/Doxyfile
index 81e414d5..83973cfb 100644
--- a/Doxyfile
+++ b/Doxyfile
@@ -623,7 +623,8 @@ EXCLUDE_PATTERNS       = *.cmdline.* \
                          gcc-compat.h \
                          fade.c \
                          config.h \
-			*_command_list.[ch]
+			*_command_list.[ch] \
+			*_completion.h
 
 # The EXCLUDE_SYMBOLS tag can be used to specify one or more symbol names
 # (namespaces, classes, functions, etc.) that should be excluded from the
diff --git a/Makefile.in b/Makefile.in
index 23ceda47..cf9598f7 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -109,6 +109,15 @@ tarball: $(tarball)
 
 -include $(ggo_dir)/makefile
 
+# When in doubt, use brute force (Ken Thompson)
+TOUPPER = \
+$(subst a,A,$(subst b,B,$(subst c,C,$(subst d,D,$(subst e,E,\
+$(subst f,F,$(subst g,G,$(subst h,H,$(subst i,I,$(subst j,J,\
+$(subst k,K,$(subst l,L,$(subst m,M,$(subst n,N,$(subst o,O,\
+$(subst p,P,$(subst q,Q,$(subst r,R,$(subst s,S,$(subst t,T,\
+$(subst u,U,$(subst v,V,$(subst w,W,$(subst x,X,$(subst y,Y,\
+$(subst z,Z,$1))))))))))))))))))))))))))
+
 %_command_list.c: %.cmd
 	@[ -z "$(Q)" ] || echo 'GEN $@'
 	$(Q) ./command_util.sh c < $< >$@
@@ -118,6 +127,10 @@ tarball: $(tarball)
 %_command_list.man: %.cmd
 	@[ -z "$(Q)" ] || echo 'GEN $@'
 	$(Q) ./command_util.sh man < $< > $@
+%_completion.h: %.cmd
+	@[ -z "$(Q)" ] || echo 'GEN $@'
+	$(Q) ./command_util.sh compl $(strip $(call TOUPPER,$(*F)))_COMPLETERS \
+		$(strip $(call TOUPPER,$(*F)))_COMMANDS	< $< > $@
 
 server_command_lists_man = server_command_list.man afs_command_list.man
 man/man1/para_server.1: para_server $(server_command_lists_man) | $(man_dir)
@@ -283,8 +296,7 @@ clean:
 clean2: clean
 	@[ -z "$(Q)" ] || echo 'CLEAN2'
 	$(Q) rm -rf man $(object_dir) $(cmdline_dir)
-	$(Q) rm -f *_command_list.* $(ggo_generated)
-
+	$(Q) rm -f *_command_list.* *_completion.h $(ggo_generated)
 distclean: clean2 test-clean
 	@[ -z "$(Q)" ] || echo 'DISTCLEAN'
 	$(Q) rm -f Makefile autoscan.log config.status config.log
diff --git a/command_util.sh b/command_util.sh
index 86e01258..76b3445f 100755
--- a/command_util.sh
+++ b/command_util.sh
@@ -236,6 +236,10 @@ dump_array_member()
 	echo '},'
 }
 
+dump_completion()
+{
+	echo "  {.name = \"$name_txt\", .completer = ${name_txt}_completer}, \\"
+}
 
 template_loop()
 {
@@ -305,6 +309,27 @@ com_header()
 	done
 }
 
+com_completion()
+{
+
+	echo "#define $1 \\"
+	while : ; do
+		read_one_command
+		if test $ret -lt 0; then
+			exit 1
+		fi
+		if test $ret -eq 0; then
+			break
+		fi
+		if test $template -eq 0; then
+			dump_completion
+			continue
+		fi
+		template_loop dump_completion
+	done
+	echo
+}
+
 read_header
 arg="$1"
 shift
@@ -318,4 +343,7 @@ case "$arg" in
 	"man")
 		com_man $*
 		;;
+	"compl")
+		com_completion $*
+		;;
 esac
-- 
2.39.2