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/*
* Command format string lexer for CLI backend.
*
* --
* Copyright (C) 2015 Cumulus Networks, Inc.
*
* This file is part of GNU Zebra.
*
* GNU Zebra is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2, or (at your option) any
* later version.
*
* GNU Zebra is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNU Zebra; see the file COPYING. If not, write to the Free
* Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*/
%{
#include "command_parse.h"
extern void set_lexer_string (const char *);
extern void cleanup_lexer (void);
YY_BUFFER_STATE buffer;
%}
WORD (\-|\+)?[a-z\*][-+_a-zA-Z0-9\*]*
IPV4 A\.B\.C\.D
IPV4_PREFIX A\.B\.C\.D\/M
IPV6 X:X::X:X
IPV6_PREFIX X:X::X:X\/M
VARIABLE [A-Z][-_a-zA-Z:0-9]+
NUMBER (\-|\+)?[0-9]{1,20}
RANGE \({NUMBER}[ ]?\-[ ]?{NUMBER}\)
/* yytext shall be a pointer */
%pointer
%option noyywrap
%option nounput
%option noinput
%option outfile="command_lex.c"
%%
[ /t] /* ignore whitespace */;
{WORD} {yylval.string = XSTRDUP(MTYPE_TMP, yytext); return WORD;}
{IPV4} {yylval.string = XSTRDUP(MTYPE_TMP, yytext); return IPV4;}
{IPV4_PREFIX} {yylval.string = XSTRDUP(MTYPE_TMP, yytext); return IPV4_PREFIX;}
{IPV6} {yylval.string = XSTRDUP(MTYPE_TMP, yytext); return IPV6;}
{IPV6_PREFIX} {yylval.string = XSTRDUP(MTYPE_TMP, yytext); return IPV6_PREFIX;}
{VARIABLE} {yylval.string = XSTRDUP(MTYPE_TMP, yytext); return VARIABLE;}
{RANGE} {yylval.string = XSTRDUP(MTYPE_TMP, yytext); return RANGE;}
. {return yytext[0];}
%%
void
set_lexer_string (const char *string)
{
buffer = yy_scan_string (string);
}
void
cleanup_lexer ()
{
yy_delete_buffer (buffer);
}
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