petidomo/librfc822/address_scan.l
2000-12-16 12:38:21 +00:00

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/*
* $Source$
* $Revision$
* $Date$
*
* Copyright (C) 1997 by CyberSolutions GmbH.
* All rights reserved.
*/
%{
#ifdef DEBUG_DMALLOC
# include <dmalloc.h>
#endif
#include "rfc822.h"
#include "address_scan.h"
#define yylval rfc822_lval
extern int yylval;
char * rfc822_address_buffer;
int rfc822_address_buffer_pos;
#define YY_INPUT(buf,result,max_size) { \
buf[0] = rfc822_address_buffer[rfc822_address_buffer_pos++]; \
result = ((buf[0] != '\0') ? 1 : YY_NULL); \
}
%}
%x quoted escaped escaped2
%%
([^@\.\(\) \t<>\":,\\]*\\)/(.[@\.:]) { BEGIN(escaped2); yymore(); }
([^@\.\(\) \t<>\":,\\]*\\)/(.) { BEGIN(escaped2); yymore(); }
([^@\.\(\) \t<>\":,\\]*\\)/(.[^@\.:]) { BEGIN(escaped); yymore(); }
([^@\.\(\) \t<>\":,\\]*\\) { return TOK_ILLEGAL; }
[^@\.\(\) \t<>\":,\\]+ { return TOK_ATOM; }
[ \t]+ /* eat up whitespace */
[@\.:] { yylval = yytext[0]; return yylval; }
[<>\(\),:] { return TOK_ILLEGAL; }
<escaped>. { BEGIN(INITIAL); yymore(); }
<escaped2>. { BEGIN(INITIAL); return TOK_ATOM; }
\" { BEGIN(quoted); yymore(); }
<quoted>[^\"\\]+ { yymore(); }
<quoted>\\\" { yymore(); }
<quoted>\" { BEGIN(INITIAL); return TOK_ATOM; }
<quoted><<EOF>> { BEGIN(INITIAL); return TOK_ILLEGAL; }
%%
/* Internal routines. */
int
yywrap(void)
{
return 1;
}