Import /usr/src/bin/sh from FreeBSD 12.0-RELEASE

1 files changed, 87 insertions, 0 deletions

diff --git a/bin/cash/parser.h b/bin/cash/parser.h
new file mode 100644
index 00000000..87337340
--- /dev/null
+++ b/bin/cash/parser.h
@@ -0,0 +1,87 @@
+/*-
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
+ * Copyright (c) 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Kenneth Almquist.
+ *
+ * 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.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
+ *
+ *	@(#)parser.h	8.3 (Berkeley) 5/4/95
+ * $FreeBSD: releng/12.0/bin/sh/parser.h 326025 2017-11-20 19:49:47Z pfg $
+ */
+
+/* control characters in argument strings */
+#define CTLESC '\300'
+#define CTLVAR '\301'
+#define CTLENDVAR '\371'
+#define CTLBACKQ '\372'
+#define CTLQUOTE 01		/* ored with CTLBACKQ code if in quotes */
+/*	CTLBACKQ | CTLQUOTE == '\373' */
+#define	CTLARI	'\374'
+#define	CTLENDARI '\375'
+#define	CTLQUOTEMARK '\376'
+#define	CTLQUOTEEND '\377' /* only for ${v+-...} */
+
+/* variable substitution byte (follows CTLVAR) */
+#define VSTYPE		0x0f	/* type of variable substitution */
+#define VSNUL		0x10	/* colon--treat the empty string as unset */
+#define VSLINENO	0x20	/* expansion of $LINENO, the line number \
+				   follows immediately */
+#define VSQUOTE		0x80	/* inside double quotes--suppress splitting */
+
+/* values of VSTYPE field */
+#define VSNORMAL	0x1		/* normal variable:  $var or ${var} */
+#define VSMINUS		0x2		/* ${var-text} */
+#define VSPLUS		0x3		/* ${var+text} */
+#define VSQUESTION	0x4		/* ${var?message} */
+#define VSASSIGN	0x5		/* ${var=text} */
+#define VSTRIMLEFT	0x6		/* ${var#pattern} */
+#define VSTRIMLEFTMAX	0x7		/* ${var##pattern} */
+#define VSTRIMRIGHT	0x8		/* ${var%pattern} */
+#define VSTRIMRIGHTMAX 	0x9		/* ${var%%pattern} */
+#define VSLENGTH	0xa		/* ${#var} */
+#define VSERROR		0xb		/* Syntax error, issue when expanded */
+
+
+/*
+ * NEOF is returned by parsecmd when it encounters an end of file.  It
+ * must be distinct from NULL.
+ */
+#define NEOF ((union node *)-1)
+extern int whichprompt;		/* 1 == PS1, 2 == PS2 */
+extern const char *const parsekwd[];
+
+
+union node *parsecmd(int);
+union node *parsewordexp(void);
+void forcealias(void);
+void fixredir(union node *, const char *, int);
+int goodname(const char *);
+int isassignment(const char *);
+char *getprompt(void *);
+const char *expandstr(const char *);