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2714 | cejka | 1 | /* $NetBSD: parser.h,v 1.14 2000/07/27 04:09:28 cgd Exp $ */ |
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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 *); |