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// namespacestring-inl.h
/**
* Copyright (C) 2013 10gen Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
namespace mongo {
inline StringData NamespaceString::db() const {
return _dotIndex == string::npos ?
StringData() :
StringData( _ns.c_str(), _dotIndex );
}
inline StringData NamespaceString::coll() const {
return _dotIndex == string::npos ?
StringData() :
StringData( _ns.c_str() + _dotIndex + 1, _ns.size() - 1 - _dotIndex );
}
inline bool NamespaceString::normal(const StringData& ns) {
if ( ns.find( '$' ) == string::npos )
return true;
return oplog(ns);
}
inline bool NamespaceString::oplog(const StringData& ns) {
return ns == "local.oplog.rs" || ns == "local.oplog.$main";
}
inline bool NamespaceString::special(const StringData& ns) {
return !normal(ns) || ns.find( ".system." ) != string::npos;
}
inline bool NamespaceString::validDBName( const StringData& dbin ) {
// XXX
string db = dbin.toString();
if ( db.size() == 0 || db.size() > 64 )
return false;
#ifdef _WIN32
// We prohibit all FAT32-disallowed characters on Windows
size_t good = strcspn( db.c_str() , "/\\. \"*<>:|?" );
#else
// For non-Windows platforms we are much more lenient
size_t good = strcspn( db.c_str() , "/\\. \"" );
#endif
return good == db.size();
}
inline bool NamespaceString::validCollectionName(const StringData& ns){
size_t idx = ns.find( '.' );
if ( idx == string::npos )
return false;
if ( idx + 1 >= ns.size() )
return false;
return normal( ns );
}
inline NamespaceString::NamespaceString( const StringData& nsIn ) {
_ns = nsIn.toString(); // copy to our buffer
_dotIndex = _ns.find( '.' );
}
inline int nsDBHash( const string& ns ) {
int hash = 7;
for ( size_t i = 0; i < ns.size(); i++ ) {
if ( ns[i] == '.' )
break;
hash += 11 * ( ns[i] );
hash *= 3;
}
return hash;
}
inline bool nsDBEquals( const string& a, const string& b ) {
for ( size_t i = 0; i < a.size(); i++ ) {
if ( a[i] == '.' ) {
// b has to either be done or a '.'
if ( b.size() == i )
return true;
if ( b[i] == '.' )
return true;
return false;
}
// a is another character
if ( b.size() == i )
return false;
if ( b[i] != a[i] )
return false;
}
// a is done
// make sure b is done
if ( b.size() == a.size() ||
b[a.size()] == '.' )
return true;
return false;
}
/* future : this doesn't need to be an inline. */
inline string NamespaceString::getSisterNS( const StringData& local ) const {
verify( local.size() && local[0] != '.' );
return db().toString() + "." + local.toString();
}
inline string NamespaceString::getSystemIndexesCollection() const {
return db().toString() + ".system.indexes";
}
}
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