projects / apple / shell_cmds.git / blame
| Commit | Line | Data |
|---|---|---|
| 71aad674 A |
1 | /*- |
| 2 | * Copyright (c) 1991, 1993 | |
| 3 | * The Regents of the University of California. All rights reserved. | |
| 4 | * | |
| 5 | * This code is derived from software contributed to Berkeley by | |
| 6 | * Kenneth Almquist. | |
| 7 | * | |
| 8 | * Redistribution and use in source and binary forms, with or without | |
| 9 | * modification, are permitted provided that the following conditions | |
| 10 | * are met: | |
| 11 | * 1. Redistributions of source code must retain the above copyright | |
| 12 | * notice, this list of conditions and the following disclaimer. | |
| 13 | * 2. Redistributions in binary form must reproduce the above copyright | |
| 14 | * notice, this list of conditions and the following disclaimer in the | |
| 15 | * documentation and/or other materials provided with the distribution. | |
| 16 | * 4. Neither the name of the University nor the names of its contributors | |
| 17 | * may be used to endorse or promote products derived from this software | |
| 18 | * without specific prior written permission. | |
| 19 | * | |
| 20 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
| 21 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 22 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 23 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
| 24 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
| 25 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
| 26 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
| 27 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
| 28 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
| 29 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
| 30 | * SUCH DAMAGE. | |
| 31 | * | |
| 32 | * @(#)parser.h 8.3 (Berkeley) 5/4/95 | |
| 33 | * $FreeBSD$ | |
| 34 | */ | |
| 35 | ||
| 36 | /* control characters in argument strings */ | |
| 37 | #define CTLESC '\300' | |
| 38 | #define CTLVAR '\301' | |
| 39 | #define CTLENDVAR '\371' | |
| 40 | #define CTLBACKQ '\372' | |
| 41 | #define CTLQUOTE 01 /* ored with CTLBACKQ code if in quotes */ | |
| 42 | /* CTLBACKQ | CTLQUOTE == '\373' */ | |
| 43 | #define CTLARI '\374' | |
| 44 | #define CTLENDARI '\375' | |
| 45 | #define CTLQUOTEMARK '\376' | |
| 46 | #define CTLQUOTEEND '\377' /* only for ${v+-...} */ | |
| 47 | ||
| 48 | /* variable substitution byte (follows CTLVAR) */ | |
| 49 | #define VSTYPE 0x0f /* type of variable substitution */ | |
| 50 | #define VSNUL 0x10 /* colon--treat the empty string as unset */ | |
| 51 | #define VSLINENO 0x20 /* expansion of $LINENO, the line number \ | |
| 52 | follows immediately */ | |
| 53 | #define VSQUOTE 0x80 /* inside double quotes--suppress splitting */ | |
| 54 | ||
| 55 | /* values of VSTYPE field */ | |
| 56 | #define VSNORMAL 0x1 /* normal variable: $var or ${var} */ | |
| 57 | #define VSMINUS 0x2 /* ${var-text} */ | |
| 58 | #define VSPLUS 0x3 /* ${var+text} */ | |
| 59 | #define VSQUESTION 0x4 /* ${var?message} */ | |
| 60 | #define VSASSIGN 0x5 /* ${var=text} */ | |
| 61 | #define VSTRIMLEFT 0x6 /* ${var#pattern} */ | |
| 62 | #define VSTRIMLEFTMAX 0x7 /* ${var##pattern} */ | |
| 63 | #define VSTRIMRIGHT 0x8 /* ${var%pattern} */ | |
| 64 | #define VSTRIMRIGHTMAX 0x9 /* ${var%%pattern} */ | |
| 65 | #define VSLENGTH 0xa /* ${#var} */ | |
| 66 | #define VSERROR 0xb /* Syntax error, issue when expanded */ | |
| 67 | ||
| 68 | ||
| 69 | /* | |
| 70 | * NEOF is returned by parsecmd when it encounters an end of file. It | |
| 71 | * must be distinct from NULL. | |
| 72 | */ | |
| 73 | #define NEOF ((union node *)-1) | |
| 74 | extern int whichprompt; /* 1 == PS1, 2 == PS2 */ | |
| 75 | extern const char *const parsekwd[]; | |
| 76 | ||
| 77 | ||
| 78 | union node *parsecmd(int); | |
| 79 | void forcealias(void); | |
| 80 | void fixredir(union node *, const char *, int); | |
| 81 | int goodname(const char *); | |
| 82 | int isassignment(const char *); | |
| 83 | char *getprompt(void *); | |
| 84 | const char *expandstr(const char *); |