1 files changed, 61 insertions, 0 deletions
diff --git a/metachar.h b/metachar.h
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index 000000000000..db88d671067e
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+++ b/metachar.h
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+/*	$NetBSD: metachar.h,v 1.4 2015/06/21 20:26:02 christos Exp $	*/
+
+/*-
+ * Copyright (c) 2015 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Christos Zoulas.
+ *
+ * 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 THE NETBSD FOUNDATION, INC. 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 THE FOUNDATION 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.
+ */
+#ifndef _METACHAR_H
+#define _METACHAR_H
+
+#include <ctype.h>
+
+extern unsigned char _metachar[];
+
+#define ismeta(c)	_metachar[(c) & 0x7f]
+
+static inline int
+hasmeta(const char *cmd)
+{
+	while (!ismeta(*cmd))
+		cmd++;
+
+	return *cmd != '\0';
+}
+
+static inline int
+needshell(const char *cmd, int white)
+{
+	while (!ismeta(*cmd) && *cmd != ':' && *cmd != '=') {
+		if (white && isspace((unsigned char)*cmd))
+			break;
+		cmd++;
+	}
+
+	return *cmd != '\0';
+}
+
+#endif /* _METACHAR_H */