namespacestring -> namespace_string

1 files changed, 133 insertions, 0 deletions

diff --git a/src/mongo/db/namespace_string-inl.h b/src/mongo/db/namespace_string-inl.h
new file mode 100644
index 00000000000..6ca88f8aa76
--- /dev/null
+++ b/src/mongo/db/namespace_string-inl.h
@@ -0,0 +1,133 @@
+// 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";
+    }
+
+}