| 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 |