3 * $Id: scan.h,v 1.1 1999/07/01 08:56:23 mdw Exp $
7 * (c) 1999 Mark Wooding
10 /*----- Licensing notice --------------------------------------------------*
12 * This file is part of the `fw' port forwarder.
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.
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.
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.
29 /*----- Revision history --------------------------------------------------*
32 * Revision 1.1 1999/07/01 08:56:23 mdw
44 /*----- Header files ------------------------------------------------------*/
48 #include <mLib/dstr.h>
50 /*----- Data structures ---------------------------------------------------*/
52 /* --- A configuration scanner --- */
54 typedef struct scan_ops
{
55 int (*scan
)(void */
*p*/
); /* Character scan function */
56 void (*unscan
)(int /*ch*/, void */
*p*/
); /* Character pushback function */
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 */
67 /*----- Scanners provided -------------------------------------------------*/
69 /* --- The @argv@ scanner --- */
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 */
78 extern void scan_argvinit(scan_argvctx */
*c*/
, char **/
*pp*/
);
80 /* --- The file scanner --- */
82 typedef struct scan_filectx
{
83 scanner sc
; /* Scanner base structure */
84 FILE *fp
; /* Stream pointer */
87 extern void scan_fileinit(scan_filectx */
*c*/
,
88 FILE */
*fp*/
, const char */
*file*/
);
90 /*----- That's all, folks -------------------------------------------------*/