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/* $NetBSD: msgscan.l,v 1.7 2012/03/06 16:26:01 mbalmer Exp $ */
/*
* Copyright 1997 Piermont Information Systems Inc.
* All rights reserved.
*
* Written by Philip A. Nelson for Piermont Information Systems Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of Piermont Information Systems Inc. may not be used to endorse
* or promote products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY PIERMONT INFORMATION SYSTEMS INC. ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL PIERMONT INFORMATION SYSTEMS INC. BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*
*/
%{
/* scan.l: scanner description for message compiler. */
#include <sys/cdefs.h>
#if defined(__RCSID) && !defined(lint)
__RCSID("$NetBSD: msgscan.l,v 1.7 2012/03/06 16:26:01 mbalmer Exp $");
#endif
#include <stdio.h>
#include <string.h>
#include "defs.h"
#include "msgparse.h"
static int level; /* For nested comments. */
%}
%x COMMENT
%x BRACE
%option noinput
%%
[ \t]+ { /* ignore spaces and tabs */ }
[\n] { line_no++; }
";" { return (int)yytext[0]; }
message { return MESSAGE; }
[a-zA-Z][a-zA-Z0-9_]* {
yylval.s_value = strdup(yytext);
return(NAME);
}
"/*" { level = 1; BEGIN COMMENT; }
<COMMENT>"/*" { level++; }
<COMMENT>"*/" { if (level-- == 1) BEGIN 0; }
<COMMENT>"\n" { line_no++; }
<COMMENT><<EOF>> { yyerror ("EOF inside a comment."); exit (1); }
<COMMENT>. {/* eat character */}
"{" { level = 1; BEGIN BRACE; }
<BRACE>"\\{" { buff_add_ch('{'); }
<BRACE>"\\}" { buff_add_ch('}'); }
<BRACE>"{" { buff_add_ch(yytext[0]); level++; }
<BRACE>"}" { if (level-- == 1) {
BEGIN 0;
yylval.s_value = buff_copy();
return VALUE;
} else
buff_add_ch (yytext[0]);
}
<BRACE>"\n" { buff_add_ch (yytext[0]); line_no++; }
<BRACE>. { buff_add_ch (yytext[0]); }
. {
if (yytext[0] < ' ')
yyerror ("illegal character: ^%c",yytext[0] + '@');
else
if (yytext[0] > '~')
yyerror ("illegal character: \\%3d", (int) yytext[0]);
else
yyerror ("illegal character: %s",yytext);
/* To quiet the compiler */
if (0) unput(0);
}
%%
#ifdef SCAN
YYSTYPE yylval;
main()
{
int val;
line_no = 1;
while ( (val = yylex()) != 0 )
printf ("val = %d\n yytext = %s\n", val, yytext);
}
#endif
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