14b88c807SRodney W. Grimes /*- 24b88c807SRodney W. Grimes * Copyright (c) 1991, 1993 34b88c807SRodney W. Grimes * The Regents of the University of California. All rights reserved. 44b88c807SRodney W. Grimes * 54b88c807SRodney W. Grimes * This code is derived from software contributed to Berkeley by 64b88c807SRodney W. Grimes * Kenneth Almquist. 74b88c807SRodney W. Grimes * 84b88c807SRodney W. Grimes * Redistribution and use in source and binary forms, with or without 94b88c807SRodney W. Grimes * modification, are permitted provided that the following conditions 104b88c807SRodney W. Grimes * are met: 114b88c807SRodney W. Grimes * 1. Redistributions of source code must retain the above copyright 124b88c807SRodney W. Grimes * notice, this list of conditions and the following disclaimer. 134b88c807SRodney W. Grimes * 2. Redistributions in binary form must reproduce the above copyright 144b88c807SRodney W. Grimes * notice, this list of conditions and the following disclaimer in the 154b88c807SRodney W. Grimes * documentation and/or other materials provided with the distribution. 164b88c807SRodney W. Grimes * 3. All advertising materials mentioning features or use of this software 174b88c807SRodney W. Grimes * must display the following acknowledgement: 184b88c807SRodney W. Grimes * This product includes software developed by the University of 194b88c807SRodney W. Grimes * California, Berkeley and its contributors. 204b88c807SRodney W. Grimes * 4. Neither the name of the University nor the names of its contributors 214b88c807SRodney W. Grimes * may be used to endorse or promote products derived from this software 224b88c807SRodney W. Grimes * without specific prior written permission. 234b88c807SRodney W. Grimes * 244b88c807SRodney W. Grimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 254b88c807SRodney W. Grimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 264b88c807SRodney W. Grimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 274b88c807SRodney W. Grimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 284b88c807SRodney W. Grimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 294b88c807SRodney W. Grimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 304b88c807SRodney W. Grimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 314b88c807SRodney W. Grimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 324b88c807SRodney W. Grimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 334b88c807SRodney W. Grimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 344b88c807SRodney W. Grimes * SUCH DAMAGE. 354b88c807SRodney W. Grimes * 364b88c807SRodney W. Grimes * @(#)parser.h 8.1 (Berkeley) 5/31/93 374b88c807SRodney W. Grimes */ 384b88c807SRodney W. Grimes 394b88c807SRodney W. Grimes /* control characters in argument strings */ 404b88c807SRodney W. Grimes #define CTLESC '\201' 414b88c807SRodney W. Grimes #define CTLVAR '\202' 424b88c807SRodney W. Grimes #define CTLENDVAR '\203' 434b88c807SRodney W. Grimes #define CTLBACKQ '\204' 444b88c807SRodney W. Grimes #define CTLQUOTE 01 /* ored with CTLBACKQ code if in quotes */ 454b88c807SRodney W. Grimes /* CTLBACKQ | CTLQUOTE == '\205' */ 464b88c807SRodney W. Grimes #define CTLARI '\206' 474b88c807SRodney W. Grimes #define CTLENDARI '\207' 484b88c807SRodney W. Grimes 494b88c807SRodney W. Grimes /* variable substitution byte (follows CTLVAR) */ 504b88c807SRodney W. Grimes #define VSTYPE 07 /* type of variable substitution */ 514b88c807SRodney W. Grimes #define VSNUL 040 /* colon--treat the empty string as unset */ 524b88c807SRodney W. Grimes #define VSQUOTE 0100 /* inside double quotes--suppress splitting */ 534b88c807SRodney W. Grimes 544b88c807SRodney W. Grimes /* values of VSTYPE field */ 554b88c807SRodney W. Grimes #define VSNORMAL 1 /* normal variable: $var or ${var} */ 564b88c807SRodney W. Grimes #define VSMINUS 2 /* ${var-text} */ 574b88c807SRodney W. Grimes #define VSPLUS 3 /* ${var+text} */ 584b88c807SRodney W. Grimes #define VSQUESTION 4 /* ${var?message} */ 594b88c807SRodney W. Grimes #define VSASSIGN 5 /* ${var=text} */ 604b88c807SRodney W. Grimes 614b88c807SRodney W. Grimes 624b88c807SRodney W. Grimes /* 634b88c807SRodney W. Grimes * NEOF is returned by parsecmd when it encounters an end of file. It 644b88c807SRodney W. Grimes * must be distinct from NULL, so we use the address of a variable that 654b88c807SRodney W. Grimes * happens to be handy. 664b88c807SRodney W. Grimes */ 674b88c807SRodney W. Grimes extern int tokpushback; 684b88c807SRodney W. Grimes #define NEOF ((union node *)&tokpushback) 694b88c807SRodney W. Grimes extern int whichprompt; /* 1 == PS1, 2 == PS2 */ 704b88c807SRodney W. Grimes 714b88c807SRodney W. Grimes 724b88c807SRodney W. Grimes #ifdef __STDC__ 734b88c807SRodney W. Grimes union node *parsecmd(int); 744b88c807SRodney W. Grimes int goodname(char *); 754b88c807SRodney W. Grimes char *getprompt(void *); 764b88c807SRodney W. Grimes #else 774b88c807SRodney W. Grimes union node *parsecmd(); 784b88c807SRodney W. Grimes int goodname(); 794b88c807SRodney W. Grimes char *getprompt(); 804b88c807SRodney W. Grimes #endif 81