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1 | /* $NetBSD: parser.h,v 1.14 2000/07/27 04:09:28 cgd Exp $ */ |
1 | /* $NetBSD: parser.h,v 1.14 2000/07/27 04:09:28 cgd Exp $ */ |
2 | 2 | ||
3 | /*- |
3 | /*- |
4 | * Copyright (c) 1991, 1993 |
4 | * Copyright (c) 1991, 1993 |
5 | * The Regents of the University of California. All rights reserved. |
5 | * The Regents of the University of California. All rights reserved. |
6 | * |
6 | * |
7 | * This code is derived from software contributed to Berkeley by |
7 | * This code is derived from software contributed to Berkeley by |
8 | * Kenneth Almquist. |
8 | * Kenneth Almquist. |
9 | * |
9 | * |
10 | * Redistribution and use in source and binary forms, with or without |
10 | * Redistribution and use in source and binary forms, with or without |
11 | * modification, are permitted provided that the following conditions |
11 | * modification, are permitted provided that the following conditions |
12 | * are met: |
12 | * are met: |
13 | * 1. Redistributions of source code must retain the above copyright |
13 | * 1. Redistributions of source code must retain the above copyright |
14 | * notice, this list of conditions and the following disclaimer. |
14 | * notice, this list of conditions and the following disclaimer. |
15 | * 2. Redistributions in binary form must reproduce the above copyright |
15 | * 2. Redistributions in binary form must reproduce the above copyright |
16 | * notice, this list of conditions and the following disclaimer in the |
16 | * notice, this list of conditions and the following disclaimer in the |
17 | * documentation and/or other materials provided with the distribution. |
17 | * documentation and/or other materials provided with the distribution. |
18 | * 3. All advertising materials mentioning features or use of this software |
18 | * 3. All advertising materials mentioning features or use of this software |
19 | * must display the following acknowledgement: |
19 | * must display the following acknowledgement: |
20 | * This product includes software developed by the University of |
20 | * This product includes software developed by the University of |
21 | * California, Berkeley and its contributors. |
21 | * California, Berkeley and its contributors. |
22 | * 4. Neither the name of the University nor the names of its contributors |
22 | * 4. Neither the name of the University nor the names of its contributors |
23 | * may be used to endorse or promote products derived from this software |
23 | * may be used to endorse or promote products derived from this software |
24 | * without specific prior written permission. |
24 | * without specific prior written permission. |
25 | * |
25 | * |
26 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
26 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
27 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
27 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
28 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
28 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
29 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
29 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
30 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
30 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
31 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
31 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
32 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
32 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
33 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
33 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
34 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
34 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
35 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
35 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
36 | * SUCH DAMAGE. |
36 | * SUCH DAMAGE. |
37 | * |
37 | * |
38 | * @(#)parser.h 8.3 (Berkeley) 5/4/95 |
38 | * @(#)parser.h 8.3 (Berkeley) 5/4/95 |
39 | */ |
39 | */ |
40 | 40 | ||
41 | /* control characters in argument strings */ |
41 | /* control characters in argument strings */ |
42 | #define CTLESC '\201' |
42 | #define CTLESC '\201' |
43 | #define CTLVAR '\202' |
43 | #define CTLVAR '\202' |
44 | #define CTLENDVAR '\203' |
44 | #define CTLENDVAR '\203' |
45 | #define CTLBACKQ '\204' |
45 | #define CTLBACKQ '\204' |
46 | #define CTLQUOTE 01 /* ored with CTLBACKQ code if in quotes */ |
46 | #define CTLQUOTE 01 /* ored with CTLBACKQ code if in quotes */ |
47 | /* CTLBACKQ | CTLQUOTE == '\205' */ |
47 | /* CTLBACKQ | CTLQUOTE == '\205' */ |
48 | #define CTLARI '\206' |
48 | #define CTLARI '\206' |
49 | #define CTLENDARI '\207' |
49 | #define CTLENDARI '\207' |
50 | #define CTLQUOTEMARK '\210' |
50 | #define CTLQUOTEMARK '\210' |
51 | 51 | ||
52 | /* variable substitution byte (follows CTLVAR) */ |
52 | /* variable substitution byte (follows CTLVAR) */ |
53 | #define VSTYPE 0x0f /* type of variable substitution */ |
53 | #define VSTYPE 0x0f /* type of variable substitution */ |
54 | #define VSNUL 0x10 /* colon--treat the empty string as unset */ |
54 | #define VSNUL 0x10 /* colon--treat the empty string as unset */ |
55 | #define VSQUOTE 0x80 /* inside double quotes--suppress splitting */ |
55 | #define VSQUOTE 0x80 /* inside double quotes--suppress splitting */ |
56 | 56 | ||
57 | /* values of VSTYPE field */ |
57 | /* values of VSTYPE field */ |
58 | #define VSNORMAL 0x1 /* normal variable: $var or ${var} */ |
58 | #define VSNORMAL 0x1 /* normal variable: $var or ${var} */ |
59 | #define VSMINUS 0x2 /* ${var-text} */ |
59 | #define VSMINUS 0x2 /* ${var-text} */ |
60 | #define VSPLUS 0x3 /* ${var+text} */ |
60 | #define VSPLUS 0x3 /* ${var+text} */ |
61 | #define VSQUESTION 0x4 /* ${var?message} */ |
61 | #define VSQUESTION 0x4 /* ${var?message} */ |
62 | #define VSASSIGN 0x5 /* ${var=text} */ |
62 | #define VSASSIGN 0x5 /* ${var=text} */ |
63 | #define VSTRIMLEFT 0x6 /* ${var#pattern} */ |
63 | #define VSTRIMLEFT 0x6 /* ${var#pattern} */ |
64 | #define VSTRIMLEFTMAX 0x7 /* ${var##pattern} */ |
64 | #define VSTRIMLEFTMAX 0x7 /* ${var##pattern} */ |
65 | #define VSTRIMRIGHT 0x8 /* ${var%pattern} */ |
65 | #define VSTRIMRIGHT 0x8 /* ${var%pattern} */ |
66 | #define VSTRIMRIGHTMAX 0x9 /* ${var%%pattern} */ |
66 | #define VSTRIMRIGHTMAX 0x9 /* ${var%%pattern} */ |
67 | #define VSLENGTH 0xa /* ${#var} */ |
67 | #define VSLENGTH 0xa /* ${#var} */ |
68 | 68 | ||
69 | 69 | ||
70 | /* |
70 | /* |
71 | * NEOF is returned by parsecmd when it encounters an end of file. It |
71 | * NEOF is returned by parsecmd when it encounters an end of file. It |
72 | * must be distinct from NULL, so we use the address of a variable that |
72 | * must be distinct from NULL, so we use the address of a variable that |
73 | * happens to be handy. |
73 | * happens to be handy. |
74 | */ |
74 | */ |
75 | extern int tokpushback; |
75 | extern int tokpushback; |
76 | #define NEOF ((union node *)&tokpushback) |
76 | #define NEOF ((union node *)&tokpushback) |
77 | extern int whichprompt; /* 1 == PS1, 2 == PS2 */ |
77 | extern int whichprompt; /* 1 == PS1, 2 == PS2 */ |
78 | 78 | ||
79 | 79 | ||
80 | union node *parsecmd(int); |
80 | union node *parsecmd(int); |
81 | void fixredir(union node *, const char *, int); |
81 | void fixredir(union node *, const char *, int); |
82 | int goodname(char *); |
82 | int goodname(char *); |
83 | const char *getprompt(void *); |
83 | const char *getprompt(void *); |
84 | 84 |