Commit | Line | Data |
---|---|---|
d46cf1d2 KB |
1 | /*- |
2 | * Copyright (c) 1991 The Regents of the University of California. | |
3 | * All rights reserved. | |
4 | * | |
5 | * This code is derived from software contributed to Berkeley by | |
6 | * Kenneth Almquist. | |
7 | * | |
8 | * %sccs.include.redist.c% | |
9 | * | |
c660acc9 | 10 | * @(#)parser.h 5.3 (Berkeley) %G% |
d46cf1d2 KB |
11 | */ |
12 | ||
13 | /* control characters in argument strings */ | |
14 | #define CTLESC '\201' | |
15 | #define CTLVAR '\202' | |
16 | #define CTLENDVAR '\203' | |
17 | #define CTLBACKQ '\204' | |
18 | #define CTLQUOTE 01 /* ored with CTLBACKQ code if in quotes */ | |
df4e2023 MT |
19 | /* CTLBACKQ | CTLQUOTE == '\205' */ |
20 | #define CTLARI '\206' | |
21 | #define CTLENDARI '\207' | |
d46cf1d2 KB |
22 | |
23 | /* variable substitution byte (follows CTLVAR) */ | |
24 | #define VSTYPE 07 /* type of variable substitution */ | |
25 | #define VSNUL 040 /* colon--treat the empty string as unset */ | |
26 | #define VSQUOTE 0100 /* inside double quotes--suppress splitting */ | |
27 | ||
28 | /* values of VSTYPE field */ | |
29 | #define VSNORMAL 1 /* normal variable: $var or ${var} */ | |
30 | #define VSMINUS 2 /* ${var-text} */ | |
31 | #define VSPLUS 3 /* ${var+text} */ | |
32 | #define VSQUESTION 4 /* ${var?message} */ | |
33 | #define VSASSIGN 5 /* ${var=text} */ | |
34 | ||
35 | ||
36 | /* | |
37 | * NEOF is returned by parsecmd when it encounters an end of file. It | |
38 | * must be distinct from NULL, so we use the address of a variable that | |
39 | * happens to be handy. | |
40 | */ | |
41 | extern int tokpushback; | |
42 | #define NEOF ((union node *)&tokpushback) | |
c660acc9 | 43 | extern int whichprompt; /* 1 == PS1, 2 == PS2 */ |
d46cf1d2 KB |
44 | |
45 | ||
46 | #ifdef __STDC__ | |
47 | union node *parsecmd(int); | |
48 | int goodname(char *); | |
c660acc9 | 49 | char *getprompt(void *); |
d46cf1d2 KB |
50 | #else |
51 | union node *parsecmd(); | |
52 | int goodname(); | |
c660acc9 | 53 | char *getprompt(); |
d46cf1d2 | 54 | #endif |