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/*
Unix SMB/CIFS implementation.
Main metadata server / Spotlight routines / Elasticsearch backend
Copyright (C) Ralph Boehme 2019
This program 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 3 of the License, or
(at your option) any later version.
This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
*/
%{
#include "includes.h"
#include "rpc_server/mdssvc/es_parser.tab.h"
#define YY_NO_INPUT
#define mdsyylalloc SMB_MALLOC
#define mdsyylrealloc SMB_REALLOC
static char *strip_quote(const char *phrase);
%}
%option nounput noyyalloc noyyrealloc prefix="mdsyyl"
ASC [a-zA-Z0-9_\*\:\-\.]
U [\x80-\xbf]
U2 [\xc2-\xdf]
U3 [\xe0-\xef]
U4 [\xf0-\xf4]
SPECIAL [\!\#\$\%\&\'\(\)\+\,\.\/\;\<\=\>\?\@\[\]\^\`\{\}\|\~\\]
ESCHAR [\"\*]
BLANK [ \t\n]
UANY {ASC}|{U2}{U}|{U3}{U}{U}|{U4}{U}{U}{U}
UONLY {U2}{U}|{U3}{U}{U}|{U4}{U}{U}{U}
UPHRASE {UANY}|{SPECIAL}|{BLANK}|\\{ESCHAR}
%%
InRange return FUNC_INRANGE;
\$time\.iso return DATE_ISO;
false {mdsyyllval.bval = false; return BOOLEAN;}
true {mdsyyllval.bval = true; return BOOLEAN;}
\" return QUOTE;
\( return OBRACE;
\) return CBRACE;
\&\& return AND;
\|\| return OR;
\=\= return EQUAL;
\!\= return UNEQUAL;
\= return EQUAL;
\< return LT;
\> return GT;
\, return COMMA;
{UANY}+ {mdsyyllval.sval = talloc_strdup(talloc_tos(), yytext); return WORD;}
\"{UPHRASE}+\" {mdsyyllval.sval = strip_quote(yytext); return PHRASE;}
{BLANK} /* ignore */
%%
static char *strip_quote(const char *phrase)
{
size_t phrase_len = 0;
char *stripped_phrase = NULL;
if (phrase == NULL) {
return NULL;
}
phrase_len = strlen(phrase);
if (phrase_len < 2 ||
phrase[0] != '\"' ||
phrase[phrase_len - 1] != '\"')
{
return talloc_strdup(talloc_tos(), phrase);
}
phrase++;
stripped_phrase = talloc_strndup(talloc_tos(), phrase, phrase_len - 2);
if (stripped_phrase == NULL) {
return NULL;
}
return stripped_phrase;
}
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