Rev 2714 | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
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| 2714 | cejka | 1 | /* $NetBSD: parser.h,v 1.14 2000/07/27 04:09:28 cgd Exp $ */ |
| 2 | |||
| 3 | /*- |
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| 4 | * Copyright (c) 1991, 1993 |
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| 5 | * The Regents of the University of California. All rights reserved. |
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| 6 | * |
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| 7 | * This code is derived from software contributed to Berkeley by |
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| 8 | * Kenneth Almquist. |
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| 9 | * |
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| 10 | * Redistribution and use in source and binary forms, with or without |
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| 11 | * modification, are permitted provided that the following conditions |
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| 12 | * are met: |
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| 13 | * 1. Redistributions of source code must retain the above copyright |
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| 14 | * notice, this list of conditions and the following disclaimer. |
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| 15 | * 2. Redistributions in binary form must reproduce the above copyright |
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| 16 | * notice, this list of conditions and the following disclaimer in the |
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| 17 | * documentation and/or other materials provided with the distribution. |
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| 18 | * 3. All advertising materials mentioning features or use of this software |
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| 19 | * must display the following acknowledgement: |
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| 20 | * This product includes software developed by the University of |
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| 21 | * California, Berkeley and its contributors. |
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| 22 | * 4. Neither the name of the University nor the names of its contributors |
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| 23 | * may be used to endorse or promote products derived from this software |
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| 24 | * without specific prior written permission. |
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| 25 | * |
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| 26 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
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| 27 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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| 28 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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| 29 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
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| 30 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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| 31 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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| 32 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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| 33 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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| 34 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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| 35 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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| 36 | * SUCH DAMAGE. |
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| 37 | * |
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| 38 | * @(#)parser.h 8.3 (Berkeley) 5/4/95 |
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| 39 | */ |
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| 40 | |||
| 41 | /* control characters in argument strings */ |
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| 42 | #define CTLESC '\201' |
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| 43 | #define CTLVAR '\202' |
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| 44 | #define CTLENDVAR '\203' |
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| 45 | #define CTLBACKQ '\204' |
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| 46 | #define CTLQUOTE 01 /* ored with CTLBACKQ code if in quotes */ |
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| 47 | /* CTLBACKQ | CTLQUOTE == '\205' */ |
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| 48 | #define CTLARI '\206' |
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| 49 | #define CTLENDARI '\207' |
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| 50 | #define CTLQUOTEMARK '\210' |
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| 51 | |||
| 52 | /* variable substitution byte (follows CTLVAR) */ |
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| 53 | #define VSTYPE 0x0f /* type of variable substitution */ |
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| 54 | #define VSNUL 0x10 /* colon--treat the empty string as unset */ |
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| 55 | #define VSQUOTE 0x80 /* inside double quotes--suppress splitting */ |
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| 56 | |||
| 57 | /* values of VSTYPE field */ |
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| 58 | #define VSNORMAL 0x1 /* normal variable: $var or ${var} */ |
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| 59 | #define VSMINUS 0x2 /* ${var-text} */ |
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| 60 | #define VSPLUS 0x3 /* ${var+text} */ |
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| 61 | #define VSQUESTION 0x4 /* ${var?message} */ |
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| 62 | #define VSASSIGN 0x5 /* ${var=text} */ |
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| 63 | #define VSTRIMLEFT 0x6 /* ${var#pattern} */ |
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| 64 | #define VSTRIMLEFTMAX 0x7 /* ${var##pattern} */ |
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| 65 | #define VSTRIMRIGHT 0x8 /* ${var%pattern} */ |
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| 66 | #define VSTRIMRIGHTMAX 0x9 /* ${var%%pattern} */ |
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| 67 | #define VSLENGTH 0xa /* ${#var} */ |
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| 68 | |||
| 69 | |||
| 70 | /* |
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| 71 | * NEOF is returned by parsecmd when it encounters an end of file. It |
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| 72 | * must be distinct from NULL, so we use the address of a variable that |
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| 73 | * happens to be handy. |
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| 74 | */ |
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| 75 | extern int tokpushback; |
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| 76 | #define NEOF ((union node *)&tokpushback) |
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| 77 | extern int whichprompt; /* 1 == PS1, 2 == PS2 */ |
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| 78 | |||
| 79 | |||
| 80 | union node *parsecmd(int); |
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| 81 | void fixredir(union node *, const char *, int); |
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| 82 | int goodname(char *); |
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| 83 | const char *getprompt(void *); |