Move splitkv function to libcfg

Signed-off-by: David Oberhollenzer <david.oberhollenzer@tele2.at>

lib/Makemodule.am

@@ -9,6 +9,7 @@ libinit_a_CPPFLAGS = $(AM_CPPFLAGS)
 libinit_a_CFLAGS = $(AM_CFLAGS)
 
 libcfg_a_SOURCES = lib/libcfg/rdline.c lib/libcfg/unescape.c
+libcfg_a_SOURCES += lib/libcfg/splitkv.c
 libcfg_a_SOURCES += lib/libcfg/pack_argv.c lib/include/libcfg.h
 libcfg_a_CPPFLAGS = $(AM_CPPFLAGS)
 libcfg_a_CFLAGS = $(AM_CFLAGS)

lib/include/libcfg.h

@@ -95,4 +95,13 @@ int unescape(char *src);
 */
 int pack_argv(char *str);
 
+/*
+	Split the current input line into a space seperted keyword
+	(alphabetical characters only) and a value (the rest of the line).
+
+	If errors are encounted, prints a diagnostic message to stderr and
+	returns -1. On success, zero is returned.
+ */
+int splitkv(rdline_t *rd, char **k, char **v);
+
 #endif /* LIBCONFIG_H */

lib/libcfg/splitkv.c

@@ -0,0 +1,48 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later */
+/*
+ * Copyright (C) 2018 - David Oberhollenzer
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+#include <ctype.h>
+#include <stdio.h>
+
+#include "libcfg.h"
+
+int splitkv(rdline_t *rd, char **k, char **v)
+{
+	char *key = rd->buffer, *value = rd->buffer;
+
+	while (*value != ' ' && *value != '\0') {
+		if (!isalpha(*value)) {
+			fprintf(stderr,
+				"%s: %zu: unexpected '%c' in keyword\n",
+				rd->filename, rd->lineno, *value);
+			return -1;
+		}
+		++value;
+	}
+
+	if (*value != ' ') {
+		fprintf(stderr, "%s: %zu: expected argument after '%s'\n",
+			rd->filename, rd->lineno, key);
+		return -1;
+	}
+
+	*(value++) = '\0';
+
+	*k = key;
+	*v = value;
+	return 0;
+}

lib/util/rdsvc.c

@@ -226,33 +226,6 @@ static const struct svc_param {
 	{ "after", 0, RDSVC_NO_DEPS, svc_after },
 };
 
-static int splitkv(rdline_t *rd, char **k, char **v)
-{
-	char *key = rd->buffer, *value = rd->buffer;
-
-	while (*value != ' ' && *value != '\0') {
-		if (!isalpha(*value)) {
-			fprintf(stderr,
-				"%s: %zu: unexpected '%c' in keyword\n",
-				rd->filename, rd->lineno, *value);
-			return -1;
-		}
-		++value;
-	}
-
-	if (*value != ' ') {
-		fprintf(stderr, "%s: %zu: expected argument after '%s'\n",
-			rd->filename, rd->lineno, key);
-		return -1;
-	}
-
-	*(value++) = '\0';
-
-	*k = key;
-	*v = value;
-	return 0;
-}
-
 static const struct svc_param *find_param(rdline_t *rd, const char *name)
 {
 	size_t i;