75 lines
2.4 KiB
Plaintext
75 lines
2.4 KiB
Plaintext
/*
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* Copyright (C) 2021-2022 Espen Jürgensen <espenjurgensen@gmail.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/* =========================== BOILERPLATE SECTION ===========================*/
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/* This is to avoid compiler warnings about unused functions. More options are
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noyyalloc noyyrealloc noyyfree. */
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%option noyywrap nounput noinput
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/* Thread safe scanner */
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%option reentrant
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/* To avoid symbol name conflicts with multiple lexers */
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%option prefix="daap_"
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/* Automake's ylwrap expexts the output to have this name */
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%option outfile="lex.yy.c"
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/* Makes a Bison-compatible yylex */
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%option bison-bridge
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%{
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#include <stdio.h>
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#include "daap_parser.h"
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/* Unknown why this is required despite using prefix */
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#define YYSTYPE DAAP_STYPE
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%}
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/* ========================= NON-BOILERPLATE SECTION =========================*/
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re_quote '
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re_key [[:alnum:]\.\-]+
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re_value (\\.|[^'])+
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re_operator (!?[:@])
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%x IN_CRITERIA IN_CRITERIA_VALUE
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%%
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{re_quote} { BEGIN IN_CRITERIA; return DAAP_T_QUOTE; }
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<IN_CRITERIA>{re_key}/{re_operator} { yylval->str = strdup(yytext); return DAAP_T_KEY; }
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<IN_CRITERIA>{re_operator} { BEGIN IN_CRITERIA_VALUE; return (*yytext == '!' ? DAAP_T_NOT : DAAP_T_EQUAL); }
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<IN_CRITERIA>. { return *yytext; }
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<IN_CRITERIA_VALUE>\*{re_value}\*/{re_quote} { yylval->str = strdup(yytext); return DAAP_T_WILDCARD; }
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<IN_CRITERIA_VALUE>{re_value}/{re_quote} { yylval->str = strdup(yytext); return DAAP_T_VALUE; }
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<IN_CRITERIA_VALUE>{re_quote} { BEGIN INITIAL; return DAAP_T_QUOTE; }
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<IN_CRITERIA_VALUE>. { return *yytext; }
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"+"|" " { return DAAP_T_AND; }
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"," { return DAAP_T_OR; }
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"\r"?"\n" { return DAAP_T_NEWLINE; }
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. { return *yytext; }
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%%
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