85 lines
2.7 KiB
C++
85 lines
2.7 KiB
C++
#ifndef _WASASTRINGTOQUERY_H_INCLUDED_
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#define _WASASTRINGTOQUERY_H_INCLUDED_
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/* @(#$Id: wasastringtoquery.h,v 1.4 2007-01-17 13:53:41 dockes Exp $ (C) 2006 J.F.Dockes */
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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
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* Free Software Foundation, Inc.,
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* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include <string>
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#include <vector>
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using std::string;
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using std::vector;
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/**
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* A simple class to represent a parsed wasabiSimple query
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* string. Can hold a string value or an array of subqueries.
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* The value can hold one or several words. In the latter case, it should
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* be interpreted as a phrase (comes from a user-entered "quoted string").
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*/
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class WasaQuery {
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public:
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enum Op {OP_NULL, OP_LEAF, OP_EXCL, OP_OR, OP_AND};
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typedef vector<WasaQuery*> subqlist_t;
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WasaQuery()
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: m_op(OP_NULL), m_typeKind(WQTK_NONE)
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{}
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~WasaQuery();
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/** Get string describing the query tree from this point */
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void describe(string &desc) const;
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/** Op to be performed on either value or subqueries */
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WasaQuery::Op m_op;
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/** Field specification if any (ie: title, author ...) */
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string m_fieldspec;
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/* String value. Valid for op == OP_LEAF */
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string m_value;
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/** Subqueries. Valid for conjunctions */
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vector<WasaQuery*> m_subs;
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/** Restrict results to some file type, defined by either mime,
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* app group, or extension */
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enum TypeKind {WQTK_NONE, WQTK_MIME, WQTK_GROUP, WQTK_EXT};
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TypeKind m_typeKind;
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vector<string> m_types;
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/** Sort on relevance, date, name or group */
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enum SortKind {WQSK_REL, WQSK_DATE, WQSK_ALPHA, WQSK_GROUP};
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vector<SortKind> m_sortSpec;
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};
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/**
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* Wasabi query string parser class. Could be a simple function
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* really, but there might be some parser initialization work done in
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* the constructor.
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*/
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class StringToWasaQuery {
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public:
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StringToWasaQuery();
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~StringToWasaQuery();
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WasaQuery *stringToQuery(const string& str, string& reason);
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class Internal;
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private:
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Internal *internal;
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};
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#endif /* _WASASTRINGTOQUERY_H_INCLUDED_ */
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