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freebsd/usr.sbin/ndiscvt/inf-token.l

92 lines
1.5 KiB
Plaintext

%{
/*
* $Id: inf-token.l,v 1.2 2003/11/30 20:41:06 winter Exp $
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <regex.h>
#include <ctype.h>
#include <err.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "y.tab.h"
int lineno = 1;
#define YY_NO_UNPUT
int yylex(void);
void yyerror(const char *);
static void
update_lineno(const char *cp)
{
while (*cp)
if (*cp++ == '\n')
lineno++;
}
%}
%%
[ \t]+ ;
\n { lineno++; return EOL; }
\r ;
;.*$ ;
= { return EQUALS; }
, { return COMMA; }
\"(\\\"|[^"])*\" {
int len = strlen(yytext) - 2;
int blen = len + 1;
char *walker;
int i;
update_lineno(yytext);
yylval.str = (char *)malloc(blen);
if (yylval.str == NULL)
goto out;
walker = yylval.str;
for (i = 1; i <= len; i++) {
if (yytext[i] == '\\') {
switch (yytext[i + 1]) {
case '\n':
i += 2;
while(isspace(yytext[i]))
i++;
break;
case '\"':
i++;
break;
case '(':
i++;
break;
default:
break;
}
}
*walker++ = yytext[i];
}
*walker++ = '\0';
out:;
return STRING;
}
\[[a-zA-Z0-9%&\{\}\-\.\/_\\\*\ ]+\] {
int len = strlen(yytext);
yytext[len-1] = '\0';
yylval.str = strdup(yytext+1);
return SECTION;
}
[a-zA-Z0-9%&\{\}\-\.\/_\\\*]+ {
yylval.str = strdup(yytext);
return WORD;
}
%%
void
yyerror(const char *s)
{
errx(1, "line %d: %s%s %s.", lineno, yytext, yytext?":":"", s);
}