e82f7154 |
1 | /* -*-c-*- |
2 | * |
3 | * $Id: scan.h,v 1.1 1999/07/01 08:56:23 mdw Exp $ |
4 | * |
5 | * Character scanners |
6 | * |
7 | * (c) 1999 Mark Wooding |
8 | */ |
9 | |
10 | /*----- Licensing notice --------------------------------------------------* |
11 | * |
12 | * This file is part of the `fw' port forwarder. |
13 | * |
14 | * `fw' is free software; you can redistribute it and/or modify |
15 | * it under the terms of the GNU General Public License as published by |
16 | * the Free Software Foundation; either version 2 of the License, or |
17 | * (at your option) any later version. |
18 | * |
19 | * `fw' is distributed in the hope that it will be useful, |
20 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
22 | * GNU General Public License for more details. |
23 | * |
24 | * You should have received a copy of the GNU General Public License |
25 | * along with `fw'; if not, write to the Free Software Foundation, |
26 | * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
27 | */ |
28 | |
29 | /*----- Revision history --------------------------------------------------* |
30 | * |
31 | * $Log: scan.h,v $ |
32 | * Revision 1.1 1999/07/01 08:56:23 mdw |
33 | * Initial revision |
34 | * |
35 | */ |
36 | |
37 | #ifndef SCAN_H |
38 | #define SCAN_H |
39 | |
40 | #ifdef __cplusplus |
41 | extern "C" { |
42 | #endif |
43 | |
44 | /*----- Header files ------------------------------------------------------*/ |
45 | |
46 | #include <stdio.h> |
47 | |
48 | #include <mLib/dstr.h> |
49 | |
50 | /*----- Data structures ---------------------------------------------------*/ |
51 | |
52 | /* --- A configuration scanner --- */ |
53 | |
54 | typedef struct scan_ops { |
55 | int (*scan)(void */*p*/); /* Character scan function */ |
56 | void (*unscan)(int /*ch*/, void */*p*/); /* Character pushback function */ |
57 | } scan_ops; |
58 | |
59 | typedef struct scanner { |
60 | scan_ops *ops; /* Pointer to scanner operations */ |
61 | const char *src; /* Name of this source */ |
62 | int line; /* Current line number */ |
63 | int t; /* Token type */ |
64 | dstr d; /* Current token value */ |
65 | } scanner; |
66 | |
67 | /*----- Scanners provided -------------------------------------------------*/ |
68 | |
69 | /* --- The @argv@ scanner --- */ |
70 | |
71 | typedef struct scan_argvctx { |
72 | scanner sc; /* Scanner base structure */ |
73 | char *p; /* Pointer to next character */ |
74 | char **pp; /* Pointer to next string */ |
75 | int ch; /* Pushback character */ |
76 | } scan_argvctx; |
77 | |
78 | extern void scan_argvinit(scan_argvctx */*c*/, char **/*pp*/); |
79 | |
80 | /* --- The file scanner --- */ |
81 | |
82 | typedef struct scan_filectx { |
83 | scanner sc; /* Scanner base structure */ |
84 | FILE *fp; /* Stream pointer */ |
85 | } scan_filectx; |
86 | |
87 | extern void scan_fileinit(scan_filectx */*c*/, |
88 | FILE */*fp*/, const char */*file*/); |
89 | |
90 | /*----- That's all, folks -------------------------------------------------*/ |
91 | |
92 | #ifdef __cplusplus |
93 | } |
94 | #endif |
95 | |
96 | #endif |