mirror of https://github.com/vitalif/grive2
162 lines
4.1 KiB
C++
162 lines
4.1 KiB
C++
/*
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grive: an GPL program to sync a local directory with Google Drive
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Copyright (C) 2012 Wan Wai Ho
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation version 2
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of the License.
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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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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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#pragma once
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#include "util/DateTime.hh"
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#include "util/Exception.hh"
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#include "util/FileSystem.hh"
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#include <string>
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#include <vector>
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#include <iosfwd>
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namespace gr {
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namespace http
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{
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class Agent ;
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}
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class Val ;
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namespace v1 {
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class Entry ;
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/*! \brief A resource can be a file or a folder in the google drive
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The google drive contains a number of resources, which is represented by this class.
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It also contains linkage to other resources, such as parent and childrens.
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*/
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class Resource
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{
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public :
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struct Error : virtual Exception {} ;
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typedef std::vector<Resource*> Children ;
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typedef Children::const_iterator iterator ;
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public :
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Resource(const fs::path& root_folder) ;
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Resource( const std::string& name, const std::string& kind ) ;
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bool IsFolder() const ;
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std::string Name() const ;
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std::string SelfHref() const ;
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std::string ResourceID() const ;
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const Resource* Parent() const ;
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Resource* Parent() ;
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void AddChild( Resource *child ) ;
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Resource* FindChild( const std::string& title ) ;
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fs::path Path() const ;
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bool IsInRootTree() const ;
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bool IsRoot() const ;
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bool HasID() const ;
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std::string MD5() const ;
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void FromRemote( const Entry& remote, const DateTime& last_sync ) ;
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void FromLocal( const DateTime& last_sync ) ;
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void Sync( http::Agent* http, DateTime& sync_time, const Val& options ) ;
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// children access
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iterator begin() const ;
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iterator end() const ;
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std::size_t size() const ;
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std::string StateStr() const ;
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private :
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/// State of the resource. indicating what to do with the resource
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enum State
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{
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/// The best state: the file is the same in remote and in local.
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sync,
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/// Resource created in local, but remote does not have it.
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/// We should create the resource in google drive and upload new content
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local_new,
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/// Resource exists in both local & remote, but changes in local is newer
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/// than remote. We should upload local copy to overwrite remote.
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local_changed,
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/// Resource deleted from local since last time grive has checked.
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local_deleted,
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/// Resource created in google drive, but not exist in local.
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/// We should download the file.
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remote_new,
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/// Resource exists in both local & remote, but remote is newer.
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remote_changed,
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/// Resource delete in remote, need to delete in local
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remote_deleted,
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/// invalid value
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unknown
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} ;
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friend std::ostream& operator<<( std::ostream& os, State s ) ;
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private :
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void SetState( State new_state ) ;
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void Download( http::Agent* http, const fs::path& file ) const ;
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bool EditContent( http::Agent* http, bool new_rev ) ;
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bool Create( http::Agent* http ) ;
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bool Upload( http::Agent* http, const std::string& link, bool post ) ;
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void FromRemoteFolder( const Entry& remote, const DateTime& last_sync ) ;
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void FromRemoteFile( const Entry& remote, const DateTime& last_sync ) ;
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void DeleteLocal() ;
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void DeleteRemote( http::Agent* http ) ;
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void AssignIDs( const Entry& remote ) ;
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void SyncSelf( http::Agent* http, const Val& options ) ;
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private :
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std::string m_name ;
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std::string m_kind ;
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std::string m_md5 ;
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DateTime m_mtime ;
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std::string m_id ;
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std::string m_href ;
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std::string m_edit ;
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std::string m_create ;
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std::string m_content ;
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std::string m_etag ;
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// not owned
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Resource *m_parent ;
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std::vector<Resource*> m_child ;
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State m_state ;
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} ;
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} } // end of namespace gr::v1
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