diff splitargv.c @ 20:76a6bad110e2

Add routine to split string into argv/argc
author Daniel O'Connor <darius@dons.net.au>
date Sat, 31 Jan 2015 23:30:35 +1030
parents
children 01e77066f72b
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/splitargv.c	Sat Jan 31 23:30:35 2015 +1030
@@ -0,0 +1,60 @@
+/*
+ * Split string to argv
+ *
+ * Copyright (c) 2015
+ *      Daniel O'Connor <darius@dons.net.au>.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <string.h>
+
+/* Split command string on space/tab boundaries into argv/argc
+ *
+ * Ignore the first 'skip' parameters.
+ * If maxargs is exceeded return 1 otherwise 0
+ *
+ * TODO: handle escape chars
+ */
+int
+splitargv(char *buf, unsigned skip, char *argv[], unsigned maxargs, int *argc) {
+	char **btmp;
+
+	*argc = 0;
+	btmp = &buf;
+	while (1) {
+		argv[*argc] = strsep(btmp, " \t");
+		if (argv[*argc] == '\0')
+			break;
+		/* Skip arg(s) if necessary */
+		if (skip) {
+			skip--;
+			continue;
+		}
+		(*argc)++;
+		if (*argc == maxargs)
+			return 1;
+	}
+
+	return 0;
+}
+