mirror of https://github.com/vitalif/grive2
275 lines
6.2 KiB
C++
275 lines
6.2 KiB
C++
/*
|
|
grive: an GPL program to sync a local directory with Google Drive
|
|
Copyright (C) 2012 Wan Wai Ho
|
|
|
|
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 version 2
|
|
of the License.
|
|
|
|
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, write to the Free Software
|
|
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
|
*/
|
|
|
|
#include "State.hh"
|
|
|
|
#include "Entry.hh"
|
|
#include "Resource.hh"
|
|
#include "CommonUri.hh"
|
|
|
|
#include "http/Agent.hh"
|
|
#include "util/Crypt.hh"
|
|
#include "util/log/Log.hh"
|
|
#include "protocol/Json.hh"
|
|
|
|
#include <boost/bind.hpp>
|
|
|
|
#include <boost/multi_index_container.hpp>
|
|
#include <boost/multi_index/hashed_index.hpp>
|
|
#include <boost/multi_index/identity.hpp>
|
|
#include <boost/multi_index/member.hpp>
|
|
#include <boost/multi_index/mem_fun.hpp>
|
|
|
|
#include <fstream>
|
|
|
|
namespace gr {
|
|
|
|
State::State( const fs::path& filename, const Json& options ) :
|
|
m_cstamp( -1 )
|
|
{
|
|
Read( filename ) ;
|
|
|
|
// the "-f" option will make grive always thinks remote is newer
|
|
Json force ;
|
|
if ( options.Get("force", force) && force.Bool() )
|
|
m_last_sync = DateTime() ;
|
|
|
|
Log( "last sync time: %1%", m_last_sync, log::verbose ) ;
|
|
}
|
|
|
|
State::~State()
|
|
{
|
|
}
|
|
|
|
/// Synchronize local directory. Build up the resource tree from files and folders
|
|
/// of local directory.
|
|
void State::FromLocal( const fs::path& p )
|
|
{
|
|
FromLocal( p, m_res.Root() ) ;
|
|
}
|
|
|
|
bool State::IsIgnore( const std::string& filename )
|
|
{
|
|
return filename[0] == '.' ;
|
|
}
|
|
|
|
void State::FromLocal( const fs::path& p, gr::Resource* folder )
|
|
{
|
|
assert( folder != 0 ) ;
|
|
assert( folder->IsFolder() ) ;
|
|
|
|
// sync the folder itself
|
|
folder->FromLocal( m_last_sync ) ;
|
|
|
|
for ( fs::directory_iterator i( p ) ; i != fs::directory_iterator() ; ++i )
|
|
{
|
|
std::string fname = Path2Str(i->path().filename()) ;
|
|
|
|
if ( IsIgnore(fname) )
|
|
Log( "file %1% is ignored by grive", fname, log::verbose ) ;
|
|
|
|
// check for broken symblic links
|
|
else if ( !fs::exists( i->path() ) )
|
|
Log( "file %1% doesn't exist (broken link?), ignored", i->path(), log::verbose ) ;
|
|
|
|
else
|
|
{
|
|
// if the Resource object of the child already exists, it should
|
|
// have been so no need to do anything here
|
|
Resource *c = folder->FindChild( fname ) ;
|
|
if ( c == 0 )
|
|
{
|
|
c = new Resource( fname, fs::is_directory(i->path()) ? "folder" : "file" ) ;
|
|
folder->AddChild( c ) ;
|
|
m_res.Insert( c ) ;
|
|
}
|
|
|
|
c->FromLocal( m_last_sync ) ;
|
|
|
|
if ( fs::is_directory( i->path() ) )
|
|
FromLocal( *i, c ) ;
|
|
}
|
|
}
|
|
}
|
|
|
|
void State::FromRemote( const Entry& e )
|
|
{
|
|
if ( IsIgnore( e.Name() ) )
|
|
Log( "%1% %2% is ignored by grive", e.Kind(), e.Name(), log::verbose ) ;
|
|
|
|
else if ( !Update( e ) )
|
|
{
|
|
m_unresolved.push_back( e ) ;
|
|
}
|
|
}
|
|
|
|
void State::ResolveEntry()
|
|
{
|
|
while ( !m_unresolved.empty() )
|
|
{
|
|
if ( TryResolveEntry() == 0 )
|
|
break ;
|
|
}
|
|
}
|
|
|
|
std::size_t State::TryResolveEntry()
|
|
{
|
|
assert( !m_unresolved.empty() ) ;
|
|
|
|
std::size_t count = 0 ;
|
|
std::vector<Entry>& en = m_unresolved ;
|
|
|
|
for ( std::vector<Entry>::iterator i = en.begin() ; i != en.end() ; )
|
|
{
|
|
if ( Update( *i ) )
|
|
{
|
|
i = en.erase( i ) ;
|
|
count++ ;
|
|
}
|
|
else
|
|
++i ;
|
|
}
|
|
return count ;
|
|
}
|
|
|
|
void State::FromChange( const Entry& e )
|
|
{
|
|
if ( IsIgnore( e.Name() ) )
|
|
Log( "%1% %2% is ignored by grive", e.Kind(), e.Name(), log::verbose ) ;
|
|
|
|
// entries in the change feed is always treated as newer in remote,
|
|
// so we override the last sync time to 0
|
|
else if ( Resource *res = m_res.FindByHref( e.AltSelf() ) )
|
|
m_res.Update( res, e, DateTime() ) ;
|
|
}
|
|
|
|
bool State::Update( const Entry& e )
|
|
{
|
|
assert( !e.ParentHref().empty() ) ;
|
|
|
|
if ( Resource *res = m_res.FindByHref( e.SelfHref() ) )
|
|
{
|
|
m_res.Update( res, e, m_last_sync ) ;
|
|
return true ;
|
|
}
|
|
else if ( Resource *parent = m_res.FindByHref( e.ParentHref() ) )
|
|
{
|
|
assert( parent->IsFolder() ) ;
|
|
|
|
// see if the entry already exist in local
|
|
std::string name = ( e.Kind() == "folder" ? e.Title() : e.Filename() ) ;
|
|
Resource *child = parent->FindChild( name ) ;
|
|
if ( child != 0 )
|
|
{
|
|
// since we are updating the ID and Href, we need to remove it and re-add it.
|
|
m_res.Update( child, e, m_last_sync ) ;
|
|
}
|
|
|
|
// folder entry exist in google drive, but not local. we should create
|
|
// the directory
|
|
else if ( e.Kind() == "folder" || !e.Filename().empty() )
|
|
{
|
|
// first create a dummy resource and update it later
|
|
child = new Resource( name, e.Kind() ) ;
|
|
parent->AddChild( child ) ;
|
|
m_res.Insert( child ) ;
|
|
|
|
// update the state of the resource
|
|
m_res.Update( child, e, m_last_sync ) ;
|
|
}
|
|
|
|
return true ;
|
|
}
|
|
else
|
|
return false ;
|
|
}
|
|
|
|
Resource* State::FindByHref( const std::string& href )
|
|
{
|
|
return m_res.FindByHref( href ) ;
|
|
}
|
|
|
|
Resource* State::Find( const fs::path& path )
|
|
{
|
|
return m_res.FindByPath( path ) ;
|
|
}
|
|
|
|
State::iterator State::begin()
|
|
{
|
|
return m_res.begin() ;
|
|
}
|
|
|
|
State::iterator State::end()
|
|
{
|
|
return m_res.end() ;
|
|
}
|
|
|
|
void State::Read( const fs::path& filename )
|
|
{
|
|
try
|
|
{
|
|
Json json = Json::ParseFile( filename.string() ) ;
|
|
|
|
Json last_sync = json["last_sync"] ;
|
|
m_last_sync.Assign(
|
|
last_sync["sec"].Int(),
|
|
last_sync["nsec"].Int() ) ;
|
|
|
|
m_cstamp = json["change_stamp"].Int() ;
|
|
}
|
|
catch ( Exception& )
|
|
{
|
|
m_last_sync.Assign(0) ;
|
|
}
|
|
}
|
|
|
|
void State::Write( const fs::path& filename ) const
|
|
{
|
|
Json last_sync ;
|
|
last_sync.Add( "sec", Json(m_last_sync.Sec() ) );
|
|
last_sync.Add( "nsec", Json(m_last_sync.NanoSec() ) );
|
|
|
|
Json result ;
|
|
result.Add( "last_sync", last_sync ) ;
|
|
result.Add( "change_stamp", Json(m_cstamp) ) ;
|
|
|
|
std::ofstream fs( filename.string().c_str() ) ;
|
|
fs << result ;
|
|
}
|
|
|
|
void State::Sync( http::Agent *http, const http::Header& auth )
|
|
{
|
|
std::for_each( m_res.begin(), m_res.end(),
|
|
boost::bind( &Resource::Sync, _1, http, auth ) ) ;
|
|
|
|
m_last_sync = DateTime::Now() ;
|
|
}
|
|
|
|
long State::ChangeStamp() const
|
|
{
|
|
return m_cstamp ;
|
|
}
|
|
|
|
void State::ChangeStamp( long cstamp )
|
|
{
|
|
m_cstamp = cstamp ;
|
|
}
|
|
|
|
} // end of namespace
|