Annotation of /trunk/mkinitrd-magellan/klibc/usr/dash/parser.h
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Wed Aug 18 21:11:40 2010 UTC (13 years, 8 months ago) by niro
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Wed Aug 18 21:11:40 2010 UTC (13 years, 8 months ago) by niro
File MIME type: text/plain
File size: 3645 byte(s)
-updated to klibc-1.5.19
1 | niro | 532 | /*- |
2 | * Copyright (c) 1991, 1993 | ||
3 | * The Regents of the University of California. All rights reserved. | ||
4 | * Copyright (c) 1997-2005 | ||
5 | * Herbert Xu <herbert@gondor.apana.org.au>. All rights reserved. | ||
6 | * | ||
7 | * This code is derived from software contributed to Berkeley by | ||
8 | * Kenneth Almquist. | ||
9 | * | ||
10 | * Redistribution and use in source and binary forms, with or without | ||
11 | * modification, are permitted provided that the following conditions | ||
12 | * are met: | ||
13 | * 1. Redistributions of source code must retain the above copyright | ||
14 | * notice, this list of conditions and the following disclaimer. | ||
15 | * 2. Redistributions in binary form must reproduce the above copyright | ||
16 | * notice, this list of conditions and the following disclaimer in the | ||
17 | * documentation and/or other materials provided with the distribution. | ||
18 | * 3. Neither the name of the University nor the names of its contributors | ||
19 | * may be used to endorse or promote products derived from this software | ||
20 | * without specific prior written permission. | ||
21 | * | ||
22 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | ||
23 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | ||
24 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | ||
25 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | ||
26 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | ||
27 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | ||
28 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | ||
29 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | ||
30 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | ||
31 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | ||
32 | * SUCH DAMAGE. | ||
33 | * | ||
34 | * @(#)parser.h 8.3 (Berkeley) 5/4/95 | ||
35 | */ | ||
36 | |||
37 | /* control characters in argument strings */ | ||
38 | #define CTL_FIRST -127 /* first 'special' character */ | ||
39 | #define CTLESC -127 /* escape next character */ | ||
40 | #define CTLVAR -126 /* variable defn */ | ||
41 | #define CTLENDVAR -125 | ||
42 | #define CTLBACKQ -124 | ||
43 | #define CTLARI -122 /* arithmetic expression */ | ||
44 | #define CTLENDARI -121 | ||
45 | #define CTLQUOTEMARK -120 | ||
46 | #define CTL_LAST -120 /* last 'special' character */ | ||
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 | |||
52 | /* values of VSTYPE field */ | ||
53 | #define VSNORMAL 0x1 /* normal variable: $var or ${var} */ | ||
54 | #define VSMINUS 0x2 /* ${var-text} */ | ||
55 | #define VSPLUS 0x3 /* ${var+text} */ | ||
56 | #define VSQUESTION 0x4 /* ${var?message} */ | ||
57 | #define VSASSIGN 0x5 /* ${var=text} */ | ||
58 | #define VSTRIMRIGHT 0x6 /* ${var%pattern} */ | ||
59 | #define VSTRIMRIGHTMAX 0x7 /* ${var%%pattern} */ | ||
60 | #define VSTRIMLEFT 0x8 /* ${var#pattern} */ | ||
61 | #define VSTRIMLEFTMAX 0x9 /* ${var##pattern} */ | ||
62 | #define VSLENGTH 0xa /* ${#var} */ | ||
63 | |||
64 | /* values of checkkwd variable */ | ||
65 | #define CHKALIAS 0x1 | ||
66 | #define CHKKWD 0x2 | ||
67 | #define CHKNL 0x4 | ||
68 | niro | 1122 | #define CHKEOFMARK 0x8 |
69 | niro | 532 | |
70 | |||
71 | /* | ||
72 | * NEOF is returned by parsecmd when it encounters an end of file. It | ||
73 | * must be distinct from NULL, so we use the address of a variable that | ||
74 | * happens to be handy. | ||
75 | */ | ||
76 | extern int tokpushback; | ||
77 | #define NEOF ((union node *)&tokpushback) | ||
78 | extern int whichprompt; /* 1 == PS1, 2 == PS2 */ | ||
79 | extern int checkkwd; | ||
80 | extern int startlinno; /* line # where last token started */ | ||
81 | |||
82 | |||
83 | union node *parsecmd(int); | ||
84 | void fixredir(union node *, const char *, int); | ||
85 | const char *getprompt(void *); | ||
86 | const char *const *findkwd(const char *); | ||
87 | char *endofname(const char *); | ||
88 | const char *expandstr(const char *); | ||
89 | |||
90 | static inline int | ||
91 | goodname(const char *p) | ||
92 | { | ||
93 | return !*endofname(p); | ||
94 | } |