1/*	$NetBSD: msgscan.l,v 1.4 2003/07/17 08:33:05 lukem Exp $	*/
2
3/*
4 * Copyright 1997 Piermont Information Systems Inc.
5 * All rights reserved.
6 *
7 * Written by Philip A. Nelson for Piermont Information Systems Inc.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 *    notice, this list of conditions and the following disclaimer in the
16 *    documentation and/or other materials provided with the distribution.
17 * 3. All advertising materials mentioning features or use of this software
18 *    must display the following acknowledgement:
19 *      This product includes software develooped for the NetBSD Project by
20 *      Piermont Information Systems Inc.
21 * 4. The name of Piermont Information Systems Inc. may not be used to endorse
22 *    or promote products derived from this software without specific prior
23 *    written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED BY PIERMONT INFORMATION SYSTEMS INC. ``AS IS''
26 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28 * ARE DISCLAIMED. IN NO EVENT SHALL PIERMONT INFORMATION SYSTEMS INC. BE
29 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
35 * THE POSSIBILITY OF SUCH DAMAGE.
36 *
37 */
38
39%{
40/* scan.l: scanner description for message compiler. */
41
42#include <sys/cdefs.h>
43
44#if defined(__RCSID) && !defined(lint)
45__RCSID("$NetBSD: msgscan.l,v 1.4 2003/07/17 08:33:05 lukem Exp $");
46#endif
47
48
49#include <stdio.h>
50#include <string.h>
51#include "defs.h"
52#include "msgparse.h"
53
54static int level; 	/* For nested comments. */
55
56%}
57
58%x COMMENT
59%x BRACE
60
61%option noinput
62
63%%
64
65[ \t]+	{ /* ignore spaces and tabs */ }
66
67[\n]	{ line_no++; }
68
69";"	{ return (int)yytext[0]; }
70
71message { return MESSAGE; }
72
73[a-zA-Z][a-zA-Z0-9_]* {
74	  yylval.s_value = strdup(yytext);
75	  return(NAME);
76	}
77
78"/*"  {	level = 1; BEGIN COMMENT;  }
79
80<COMMENT>"/*" { level++; }
81
82<COMMENT>"*/" { if (level-- == 1) BEGIN 0; }
83
84<COMMENT>"\n" { line_no++; }
85
86<COMMENT><<EOF>> { yyerror ("EOF inside a comment."); exit (1); }
87
88<COMMENT>.  {/* eat character */}
89
90"{"	{ level = 1; BEGIN BRACE; }
91
92<BRACE>"\\{"	{ buff_add_ch('{'); }
93
94<BRACE>"\\}"	{ buff_add_ch('}'); }
95
96<BRACE>"{"	{ buff_add_ch(yytext[0]); level++; }
97
98<BRACE>"}"	{ if (level-- == 1)  {
99			BEGIN 0;
100			yylval.s_value = buff_copy();
101			return VALUE;
102		  } else
103			buff_add_ch (yytext[0]);
104		}
105
106<BRACE>"\n"	{ buff_add_ch (yytext[0]); line_no++; }
107
108<BRACE>.	{ buff_add_ch (yytext[0]); }
109
110.       {
111	  if (yytext[0] < ' ')
112	    yyerror ("illegal character: ^%c",yytext[0] + '@');
113	  else
114	    if (yytext[0] > '~')
115	      yyerror ("illegal character: \\%3d", (int) yytext[0]);
116	    else
117	      yyerror ("illegal character: %s",yytext);
118
119	  /* To quiet the compiler */
120	  if (0) unput(0);
121	}
122%%
123
124#ifdef SCAN
125YYSTYPE yylval;
126
127main()
128{
129  int val;
130
131  line_no = 1;
132  while ( (val = yylex()) != 0 )
133    printf ("val = %d\n yytext = %s\n", val, yytext);
134}
135#endif
136