Add the bootstrap script

* .gitignore: New file.
* bootstrap: New file.
* wordsplit.at: Convert to stand-alone script.
* wsp.c: Support the --version option.

.gitignore

@@ -0,0 +1,9 @@
+*~
+.emacs*
+package.m4
+wordsplit-version.h
+Makefile.am
+Makefile.in
+Makefile
+configure.ac
+configure

bootstrap

@@ -0,0 +1,162 @@
+#! /bin/sh
+cd $(dirname $0)
+version=$(git describe)
+
+function genfiles() {
+    cat > wordsplit-version.h <<EOF
+#define WORDSPLIT_VERSION "$version"
+EOF
+    cat > package.m4 <<EOF
+m4_define([AT_PACKAGE_NAME],      [wordsplit])
+m4_define([AT_PACKAGE_TARNAME],   [wordsplit])
+m4_define([AT_PACKAGE_VERSION],   [$version])
+m4_define([AT_PACKAGE_STRING],    [AT_PACKAGE_NAME AT_PACKAGE_VERSION])
+m4_define([AT_PACKAGE_BUGREPORT], [gray@gnu.org])
+EOF
+}
+
+function mk_atlocal() {
+    cat <<\EOF
+# @configure_input@                                     -*- shell-script -*-
+# Configurable variable values for wordsplit test suite.
+# Copyright (C) 2016-2019 Sergey Poznyakoff
+
+PATH=@abs_builddir@:$srcdir:$PATH
+EOF
+} > atlocal.in
+
+
+function mk_testsuite() {
+    sed -e 's|MODDIR|$moddir|' <<\EOF    
+# ##################
+# Testsuite
+# ##################
+EXTRA_DIST = testsuite wordsplit.at package.m4
+DISTCLEANFILES       = atconfig
+MAINTAINERCLEANFILES = Makefile.in $(TESTSUITE)
+
+TESTSUITE = $(srcdir)/testsuite
+M4=m4
+AUTOTEST = $(AUTOM4TE) --language=autotest
+$(TESTSUITE): wordsplit.at
+	$(AM_V_GEN)$(AUTOTEST) -I $(srcdir) wordsplit.at -o $(TESTSUITE).tmp
+	$(AM_V_at)mv $(TESTSUITE).tmp $(TESTSUITE)
+
+atconfig: $(top_builddir)/config.status 
+	cd $(top_builddir) && ./config.status MODDIR/$@
+
+clean-local:
+	@test ! -f $(TESTSUITE) || $(SHELL) $(TESTSUITE) --clean
+
+check-local: atconfig atlocal $(TESTSUITE)
+	@$(SHELL) $(TESTSUITE)
+
+noinst_PROGRAMS = wsp
+wsp_SOURCES = wsp.c wordsplit-version.h 
+EOF
+    echo "wsp_LDADD = $1"
+}
+
+function common_notice() {
+    cat <<EOF
+Add the following to your configure.ac:
+
+   AC_CONFIG_TESTDIR($moddir)
+   AC_CONFIG_FILES([$moddir/Makefile $moddir/atlocal])
+
+EOF
+}
+
+function mk_installed() {
+    (cat <<EOF
+lib_LTLIBRARIES      = libwordsplit.la
+libwordsplit_la_SOURCES = wordsplit.c
+include_HEADERS = wordsplit.h
+
+EOF
+     mk_testsuite ./libwordsplit.la) > Makefile.am
+    mk_atlocal
+    common_notice
+}
+
+function mk_shared() {
+    (cat <<EOF
+noinst_LTLIBRARIES      = libwordsplit.la
+libwordsplit_la_SOURCES = wordsplit.c wordsplit.h
+
+EOF
+     mk_testsuite ./libwordsplit.la) > Makefile.am
+    mk_atlocal
+    common_notice
+}
+
+function mk_static() {
+    (cat <<EOF
+noinst_LIBRARIES      = libwordsplit.a
+libwordsplit_a_SOURCES = wordsplit.c wordsplit.h
+
+EOF
+     mk_testsuite ./libwordsplit.a) > Makefile.am
+    mk_atlocal
+    common_notice
+}
+
+function mk_embedded() {
+    (mk_testsuite wordsplit.o
+     echo "AM_CPPFLAGS = "
+     )> Makefile.am
+    mk_atlocal
+    cat <<EOF
+Add the following to the _SOURCES variable of your top-level Makefile.am:
+
+   wordsplit/wordsplit.c\\
+   wordsplit/wordsplit.h
+
+If test framework is enabled, add also the line
+
+   SUBDIRS = . wordsplit
+
+and the following lines to your configure.ac:
+
+   AC_CONFIG_TESTDIR($moddir)
+   AC_CONFIG_FILES([$moddir/Makefile $moddir/atlocal])
+
+Replace ellipsis with the leading path components to the embedded wordsplit
+sources.
+EOF
+}
+
+function usage() {
+    cat <<EOF
+usage: $0 MODE MODDIR
+
+MODE is any of:
+  installed             standalone installable library
+  shared                shared convenience library (lt)
+  static                static convenience library
+  embedded              embedded into another library
+
+EOF
+}
+#
+if [ $# -ne 2 ]; then
+    usage >&2 
+    exit 1
+fi    
+
+moddir=$2
+
+case $1 in
+    installed|shared|static|standalone|embedded)
+	genfiles
+	mk_$1
+	;;
+    clean)
+	rm -f Makefile.am package.m4 wordsplit-version.h atlocal.in
+	;;
+    *)
+	usage
+        ;;
+esac    
+
+

wordsplit.at

@@ -14,7 +14,8 @@
 # You should have received a copy of the GNU General Public License
 # along with wordsplit.  If not, see <http://www.gnu.org/licenses/>.
 
-AT_BANNER(Wordsplit)
+AT_INIT
+AT_TESTED(wsp)
 
 m4_pushdef([wspnum],[0])
 m4_pushdef([wspid])

wsp.c

@@ -23,6 +23,7 @@
 #include <assert.h>
 #include <errno.h>
 #include "wordsplit.h"
+#include "wordsplit-version.h"
 
 extern char **environ;
 
@@ -83,6 +84,12 @@ struct wsopt
 /* Index of the next argument in the argv */
 static int wsoptind = -1;
 
+void
+print_version (void)
+{
+  printf ("wsp (wordsplit %s)\n", WORDSPLIT_VERSION);
+}
+
 /* Parse next argument from the command line. Return EOF on end of arguments
    or when the "--" argument is seen. */
 static int
@@ -110,7 +117,15 @@ getwsopt (int argc, char **argv, struct wsopt *wso, struct wsclosure *wsc)
       wsoptind--;
       return EOF;
     }
+
+  if (strcmp (opt, "--version") == 0)
+    {
+      print_version ();
+      exit (0);
+    }
+
   opt++; /* skip past initial dash */
+  
   if (strncmp (opt, "no-", 3) == 0)
     {
       negate = 1;