75 lines
2.9 KiB
C
75 lines
2.9 KiB
C
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/*-
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* Copyright (c) 1991 The Regents of the University of California.
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Kenneth Almquist.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)parser.h 5.1 (Berkeley) 3/7/91
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*/
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/* control characters in argument strings */
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#define CTLESC '\201'
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#define CTLVAR '\202'
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#define CTLENDVAR '\203'
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#define CTLBACKQ '\204'
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#define CTLQUOTE 01 /* ored with CTLBACKQ code if in quotes */
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/* variable substitution byte (follows CTLVAR) */
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#define VSTYPE 07 /* type of variable substitution */
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#define VSNUL 040 /* colon--treat the empty string as unset */
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#define VSQUOTE 0100 /* inside double quotes--suppress splitting */
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/* values of VSTYPE field */
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#define VSNORMAL 1 /* normal variable: $var or ${var} */
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#define VSMINUS 2 /* ${var-text} */
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#define VSPLUS 3 /* ${var+text} */
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#define VSQUESTION 4 /* ${var?message} */
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#define VSASSIGN 5 /* ${var=text} */
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/*
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* NEOF is returned by parsecmd when it encounters an end of file. It
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* must be distinct from NULL, so we use the address of a variable that
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* happens to be handy.
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*/
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extern int tokpushback;
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#define NEOF ((union node *)&tokpushback)
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#ifdef __STDC__
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union node *parsecmd(int);
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int goodname(char *);
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#else
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union node *parsecmd();
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int goodname();
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#endif
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