From: Mike Frysinger <vapier@gentoo.org>
Date: Sun, 16 Feb 2014 06:59:20 +0000 (-0500)
Subject: Implement xlat generator
X-Git-Tag: v4.9~71
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=761ed9ba42d00aa9cbd4daceefbbff016e7c9f12;p=strace

Implement xlat generator

* bootstrap: New file.
* xlat/gen.sh: Likewise.
* Makefile.am: Include xlat/Makemodule.am
(EXTRA_DIST): Add $(XLAT_INPUT_FILES), $(XLAT_HEADER_FILES), and
xlat/gen.sh.
---

diff --git a/Makefile.am b/Makefile.am
index a789b8ca..7052157f 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -14,6 +14,8 @@ ACLOCAL_AMFLAGS = -I m4
 AM_CFLAGS = $(WARN_CFLAGS)
 AM_CPPFLAGS = -I$(srcdir)/$(OS)/$(ARCH) -I$(srcdir)/$(OS) -I$(builddir)/$(OS)
 
+include xlat/Makemodule.am
+
 strace_SOURCES =	\
 	aio.c		\
 	bjm.c		\
@@ -213,6 +215,9 @@ EXTRA_DIST =				\
 	strace-log-merge		\
 	strace.spec			\
 	syscallent.sh			\
+	$(XLAT_INPUT_FILES)		\
+	$(XLAT_HEADER_FILES)		\
+	xlat/gen.sh			\
 	xlate.el
 
 .PHONY: srpm
diff --git a/bootstrap b/bootstrap
new file mode 100755
index 00000000..196d8e46
--- /dev/null
+++ b/bootstrap
@@ -0,0 +1,3 @@
+#!/bin/sh
+./xlat/gen.sh
+exec autoreconf -f -i
diff --git a/xlat/gen.sh b/xlat/gen.sh
new file mode 100755
index 00000000..23d5b8d8
--- /dev/null
+++ b/xlat/gen.sh
@@ -0,0 +1,96 @@
+#!/bin/sh
+
+usage() {
+	cat <<EOF
+Usage: $0 <input> <output>
+
+Generate xlat header files from <input> (a file or dir of files) and write
+the generated headers to <output>.
+EOF
+	exit 1
+}
+
+gen_header() {
+	local input="$1" output="$2" name="$3"
+	local line
+	echo "generating ${output}"
+	(
+	echo "/* Generated by $0 from $1; do not edit. */"
+	echo "const struct xlat ${name}[] = {"
+	while read line ; do
+		case ${line} in
+		/*|\#*|'')
+			echo "${line}"
+			;;
+		*)
+			echo "#ifdef ${line}"
+			echo "	XLAT(${line}),"
+			echo "#endif"
+			;;
+		esac
+	done < "${input}"
+	echo "	XLAT_END"
+	echo "};"
+	) >"${output}"
+}
+
+gen_make() {
+	local output="$1"
+	local name
+	shift
+	echo "generating ${output}"
+	(
+		printf "XLAT_INPUT_FILES = "
+		printf 'xlat/%s.in ' "$@"
+		echo
+		printf "XLAT_HEADER_FILES = "
+		printf 'xlat/%s.h ' "$@"
+		echo
+		for name; do
+			printf '$(top_srcdir)/xlat/%s.h: $(top_srcdir)/xlat/%s.in $(top_srcdir)/xlat/gen.sh\n' \
+				"${name}" "${name}"
+			echo '	$(AM_V_GEN)$(top_srcdir)/xlat/gen.sh $< $@'
+		done
+	) >"${output}"
+}
+
+gen_git() {
+	local output="$1"
+	shift
+	echo "generating ${output}"
+	(
+		printf '/%s\n' .gitignore Makemodule.am
+		printf '/%s.h\n' "$@"
+	) >"${output}"
+}
+
+main() {
+	case $# in
+	0) set -- "${0%/*}" "${0%/*}" ;;
+	2) ;;
+	*) usage ;;
+	esac
+
+	local input="$1"
+	local output="$2"
+	local name
+
+	if [ -d "${input}" ]; then
+		local f name names
+		for f in "${input}"/*.in; do
+			name=${f##*/}
+			name=${name%.in}
+			gen_header "${f}" "${output}/${name}.h" "${name}" &
+			names="${names} ${name}"
+		done
+		gen_git "${output}/.gitignore" ${names}
+		gen_make "${output}/Makemodule.am" ${names}
+		wait
+	else
+		name=${input##*/}
+		name=${name%.in}
+		gen_header "${input}" "${output}" "${name}"
+	fi
+}
+
+main "$@"