зеркало из https://github.com/mozilla/pjs.git
1192 строки
46 KiB
C++
1192 строки
46 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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#include "nsIRegistry.h"
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#include "nsIEnumerator.h"
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#include "NSReg.h"
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#include "prmem.h"
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/*-------------------------------- nsRegistry ----------------------------------
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| This class implements the nsIRegistry interface using the functions |
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| provided by libreg (as declared in mozilla/modules/libreg/include/NSReg.h). |
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| |
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| Since that interface is designed to match the libreg function, this class |
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| is implemented with each member function being a simple wrapper for the |
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| corresponding libreg function. |
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------------------------------------------------------------------------------*/
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struct nsRegistry : public nsIRegistry {
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// This class implements the nsISupports interface functions.
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NS_DECL_ISUPPORTS
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// This class implements the nsIRegistry interface functions.
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NS_IMETHOD Open( const char *regFile = 0 );
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NS_IMETHOD OpenDefault();
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NS_IMETHOD Close();
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NS_IMETHOD GetString( Key baseKey, const char *path, char **result );
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NS_IMETHOD SetString( Key baseKey, const char *path, const char *value );
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NS_IMETHOD GetInt( Key baseKey, const char *path, int32 *result );
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NS_IMETHOD SetInt( Key baseKey, const char *path, int32 value );
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NS_IMETHOD GetBytes( Key baseKey, const char *path, void **result, uint32 *len );
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NS_IMETHOD SetBytes( Key baseKey, const char *path, void *value, uint32 len );
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NS_IMETHOD GetIntArray( Key baseKey, const char *path, int32 **result, uint32 *len );
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NS_IMETHOD SetIntArray( Key baseKey, const char *path, const int32 *value, uint32 len );
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NS_IMETHOD AddSubtree( Key baseKey, const char *path, Key *result );
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NS_IMETHOD RemoveSubtree( Key baseKey, const char *path );
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NS_IMETHOD GetSubtree( Key baseKey, const char *path, Key *result );
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NS_IMETHOD EnumerateSubtrees( Key baseKey, nsIEnumerator **result );
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NS_IMETHOD EnumerateAllSubtrees( Key baseKey, nsIEnumerator **result );
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NS_IMETHOD GetValueType( Key baseKey, const char *path, uint32 *result );
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NS_IMETHOD GetValueLength( Key baseKey, const char *path, uint32 *result );
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NS_IMETHOD EnumerateValues( Key baseKey, nsIEnumerator **result );
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NS_IMETHOD GetCurrentUserName( char **result );
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NS_IMETHOD SetCurrentUserName( const char *name );
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NS_IMETHOD Pack();
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// ctor/dtor
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nsRegistry();
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virtual ~nsRegistry();
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protected:
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HREG mReg; // Registry handle.
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REGERR mErr; // Last libreg error code.
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}; // nsRegistry
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#include "nsIFactory.h"
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/*----------------------------- nsRegistryFactory ------------------------------
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| Class factory for nsRegistry objects. |
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------------------------------------------------------------------------------*/
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struct nsRegistryFactory : public nsIFactory {
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// This class implements the nsISupports interface functions.
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NS_DECL_ISUPPORTS
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// nsIFactory methods
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NS_IMETHOD CreateInstance(nsISupports *,const nsIID &,void **);
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NS_IMETHOD LockFactory(PRBool aLock);
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// ctor
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nsRegistryFactory();
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};
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/*--------------------------- nsRegSubtreeEnumerator ---------------------------
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| This class implements the nsIEnumerator interface and is used to implement |
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| the nsRegistry EnumerateSubtrees and EnumerateAllSubtrees functions. |
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------------------------------------------------------------------------------*/
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struct nsRegSubtreeEnumerator : public nsIEnumerator {
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// This class implements the nsISupports interface functions.
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NS_DECL_ISUPPORTS
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// This class implements the nsIEnumerator interface functions.
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NS_IMETHOD First();
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NS_IMETHOD Next();
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NS_IMETHOD CurrentItem(nsISupports **aItem);
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NS_IMETHOD IsDone();
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// ctor/dtor
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nsRegSubtreeEnumerator( HREG hReg, RKEY rKey, PRBool all );
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protected:
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NS_IMETHOD advance(); // Implementation file; does appropriate NR_RegEnum call.
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HREG mReg; // Handle to registry we're affiliated with.
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RKEY mKey; // Base key being enumerated.
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REGENUM mEnum; // Corresponding libreg "enumerator".
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REGENUM mNext; // Lookahead value.
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uint32 mStyle; // Style (indicates all or some);
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PRBool mDone; // Done flag.
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REGERR mErr; // Last libreg error code.
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}; // nsRegSubtreeEnumerator
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/*--------------------------- nsRegValueEnumerator -----------------------------
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| This class is a variation on nsRegSubtreeEnumerator that allocates |
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| nsRegistryValue objects rather than nsRegistryNode objects. It also |
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| overrides certain functions to make sure the "value" oriented libreg |
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| functions used rather than the subtree oriented ones. |
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------------------------------------------------------------------------------*/
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struct nsRegValueEnumerator : public nsRegSubtreeEnumerator {
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// Override CurrentItem to allocate nsRegistryValue objects.
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NS_IMETHOD CurrentItem( nsISupports **result );
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// Override advance() to use proper NR_RegEnumEntries.
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NS_IMETHOD advance();
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// ctor/dtor
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nsRegValueEnumerator( HREG hReg, RKEY rKey );
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}; // nsRegValueEnumerator
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/*------------------------------ nsRegistryNode --------------------------------
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| This class implements the nsIRegistryNode interface. Instances are |
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| allocated by nsRegSubtreeEnumerator::CurrentItem. |
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------------------------------------------------------------------------------*/
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struct nsRegistryNode : public nsIRegistryNode {
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// This class implements the nsISupports interface functions.
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NS_DECL_ISUPPORTS
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// This class implements the nsIRegistryNode interface functions.
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NS_IMETHOD GetName( char **result );
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// ctor
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nsRegistryNode( HREG hReg, RKEY key, REGENUM slot );
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protected:
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HREG mReg; // Handle to registry this node is part of.
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RKEY mKey; // Key this node is under.
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REGENUM mEnum; // Copy of corresponding content of parent enumerator.
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REGERR mErr; // Last libreg error code.
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char mName[MAXREGPATHLEN]; // Buffer to hold name.
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}; // nsRegistryNode
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/*------------------------------ nsRegistryValue -------------------------------
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| This class implements the nsIRegistryValue interface. Instances are |
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| allocated by nsRegValueEnumerator::CurrentItem. |
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------------------------------------------------------------------------------*/
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struct nsRegistryValue : public nsIRegistryValue {
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// This class implements the nsISupports interface functions.
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NS_DECL_ISUPPORTS
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// This class implements the nsIRegistryValue interface functions.
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NS_IMETHOD GetName( char **result );
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NS_IMETHOD GetValueType( uint32 *result );
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NS_IMETHOD GetValueLength( uint32 *result );
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// ctor
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nsRegistryValue( HREG hReg, RKEY key, REGENUM slot );
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protected:
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nsresult getInfo(); // Get registry info.
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HREG mReg; // Handle to registry this node is part of.
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RKEY mKey; // Key this node is under.
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REGENUM mEnum; // Copy of corresponding content of parent enumerator.
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REGERR mErr; // Last libreg error code.
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REGINFO mInfo; // Value info.
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char mName[MAXREGNAMELEN]; // Buffer to hold name.
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}; // nsRegistryValue
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/*----------------------------- regerr2nsresult --------------------------------
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| This utility function maps a REGERR value to a corresponding nsresult |
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| error code. |
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------------------------------------------------------------------------------*/
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static nsresult regerr2nsresult( REGERR err ) {
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nsresult rv = NS_ERROR_UNEXPECTED;
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switch( err ) {
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case REGERR_OK:
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rv = NS_OK;
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break;
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case REGERR_FAIL:
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rv = NS_ERROR_FAILURE;
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break;
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case REGERR_NOMORE:
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rv = NS_ERROR_REG_NO_MORE;
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break;
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case REGERR_NOFIND:
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rv = NS_ERROR_REG_NOT_FOUND;
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break;
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case REGERR_PARAM:
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case REGERR_BADTYPE:
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case REGERR_BADNAME:
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rv = NS_ERROR_INVALID_ARG;
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break;
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case REGERR_NOFILE:
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rv = NS_ERROR_REG_NOFILE;
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break;
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case REGERR_MEMORY:
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rv = NS_ERROR_OUT_OF_MEMORY;
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break;
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case REGERR_BUFTOOSMALL:
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rv = NS_ERROR_REG_BUFFER_TOO_SMALL;
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break;
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case REGERR_NAMETOOLONG:
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rv = NS_ERROR_REG_NAME_TOO_LONG;
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break;
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case REGERR_NOPATH:
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rv = NS_ERROR_REG_NO_PATH;
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break;
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case REGERR_READONLY:
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rv = NS_ERROR_REG_READ_ONLY;
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break;
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case REGERR_BADUTF8:
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rv = NS_ERROR_REG_BAD_UTF8;
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break;
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}
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return rv;
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}
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/*----------------------------- reginfo2DataType -------------------------------
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| This utility function converts the type field in the REGINFO structure to |
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| the corresponding nsIRegistry::DataType value. |
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------------------------------------------------------------------------------*/
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static void reginfo2DataType( const REGINFO &in, uint32 &out ) {
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// Transfer information, based on entry type.
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switch( in.entryType ) {
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case REGTYPE_ENTRY_STRING_UTF:
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out = nsIRegistry::String;
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//out.length = in.entryLength;
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break;
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case REGTYPE_ENTRY_INT32_ARRAY:
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out = nsIRegistry::Int32;
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// Convert length in bytes to array dimension.
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//out.length = in.entryLength / sizeof(int32);
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break;
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case REGTYPE_ENTRY_BYTES:
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out = nsIRegistry::Bytes;
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//out.length = in.entryLength;
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break;
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case REGTYPE_ENTRY_FILE:
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out = nsIRegistry::File;
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//out.length = in.entryLength;
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break;
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}
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}
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/*----------------------------- reginfo2DataType -------------------------------
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| This utility function converts the length field in the REGINFO structure to |
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| the proper units (if type==Int32 array, we divide by sizeof(int32)). |
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------------------------------------------------------------------------------*/
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static void reginfo2Length( const REGINFO &in, uint32 &out ) {
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// Transfer information, based on entry type.
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switch( in.entryType ) {
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case REGTYPE_ENTRY_STRING_UTF:
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out = in.entryLength;
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break;
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case REGTYPE_ENTRY_INT32_ARRAY:
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// Convert length in bytes to array dimension.
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out = in.entryLength / sizeof(int32);
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break;
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case REGTYPE_ENTRY_BYTES:
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out = in.entryLength;
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break;
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case REGTYPE_ENTRY_FILE:
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out = in.entryLength;
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break;
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}
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}
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/*----------------------------------- IIDs -------------------------------------
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| Static IID values for each imterface implemented here; required by the |
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| NS_IMPL_ISUPPORTS macro. |
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------------------------------------------------------------------------------*/
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static NS_DEFINE_IID(kISupportsIID, NS_ISUPPORTS_IID);
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static NS_DEFINE_IID(kIRegistryIID, NS_IREGISTRY_IID);
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static NS_DEFINE_IID(kIRegistryNodeIID, NS_IREGISTRYNODE_IID);
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static NS_DEFINE_IID(kIRegistryValueIID, NS_IREGISTRYVALUE_IID);
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static NS_DEFINE_IID(kIEnumeratorIID, NS_IENUMERATOR_IID);
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static NS_DEFINE_IID(kIFactoryIID, NS_IFACTORY_IID);
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/*------------------------ nsISupports Implementation --------------------------
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| This code generates the implementation of the nsISupports member functions |
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| for each class implemented in this file. |
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------------------------------------------------------------------------------*/
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NS_IMPL_ISUPPORTS( nsRegistry, kIRegistryIID );
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NS_IMPL_ISUPPORTS( nsRegSubtreeEnumerator, kIEnumeratorIID );
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NS_IMPL_ISUPPORTS( nsRegistryNode, kIRegistryNodeIID );
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NS_IMPL_ISUPPORTS( nsRegistryValue, kIRegistryValueIID );
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/*-------------------------- nsRegistry::nsRegistry ----------------------------
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| Vanilla nsRegistry constructor. The first time called, it does |
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| NR_StartupRegistry. |
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------------------------------------------------------------------------------*/
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nsRegistry::nsRegistry()
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: mReg( 0 ) {
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NS_INIT_REFCNT();
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// Ensure libreg is started.
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static PRBool libregStarted = PR_FALSE;
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if( !libregStarted ) {
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NR_StartupRegistry();
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libregStarted = PR_TRUE;
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}
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return;
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}
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/*------------------------- nsRegistry::~nsRegistry ----------------------------
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| The dtor closes the registry file(if open). |
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------------------------------------------------------------------------------*/
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nsRegistry::~nsRegistry() {
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if( mReg ) {
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Close();
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}
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return;
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}
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/*----------------------------- nsRegistry::Open -------------------------------
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| If the argument is null, delegate to OpenDefault, else open the registry |
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| file. We first check to see if a registry file is already open and close |
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| it if so. |
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------------------------------------------------------------------------------*/
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NS_IMETHODIMP nsRegistry::Open( const char *regFile ) {
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// Check for default.
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if( !regFile ) {
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return OpenDefault();
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}
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// Ensure existing registry is closed.
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Close();
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// Open specified registry.
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mErr = NR_RegOpen((char*)regFile, &mReg );
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// Convert the result.
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return regerr2nsresult( mErr );
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}
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/*-------------------------- nsRegistry::OpenDefault ---------------------------
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| Open the "default" registry; in the case of this libreg-based implementation |
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| that is done by passing a null file name pointer to NR_RegOpen. |
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------------------------------------------------------------------------------*/
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NS_IMETHODIMP nsRegistry::OpenDefault() {
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// Ensure existing registry is closed.
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Close();
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// Open default registry.
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mErr = NR_RegOpen( 0, &mReg );
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// Convert the result.
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return regerr2nsresult( mErr );
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}
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/*----------------------------- nsRegistry::Close ------------------------------
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| Tests the mReg handle and if non-null, closes the registry via NR_RegClose. |
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------------------------------------------------------------------------------*/
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NS_IMETHODIMP nsRegistry::Close() {
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mErr = REGERR_OK;
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if( mReg ) {
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mErr = NR_RegClose( mReg );
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mReg = 0;
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}
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return regerr2nsresult( mErr );
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}
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/*--------------------------- nsRegistry::GetString ----------------------------
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| First, look for the entry using GetValueInfo. If found, and it's a string, |
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| allocate space for it and fetch the value. |
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------------------------------------------------------------------------------*/
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NS_IMETHODIMP nsRegistry::GetString( Key baseKey, const char *path, char **result ) {
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nsresult rv = NS_OK;
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// Make sure caller gave us place for result.
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if( result ) {
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*result = 0; // Clear result.
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// Get info about the requested entry.
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uint32 type, length;
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rv = GetValueType( baseKey, path, &type );
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if ( rv == NS_OK ) {
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rv = GetValueLength( baseKey, path, &length );
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}
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// See if that worked.
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if( rv == NS_OK ) {
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// Make sure the entry is a string.
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if( type == String ) {
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// Allocate space for result.
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*result =(char*)PR_Malloc( length + 1 );
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if( *result ) {
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// Get string from registry into result buffer.
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mErr = NR_RegGetEntryString( mReg,(RKEY)baseKey,(char*)path, *result, length+1 );
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// Convert status.
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rv = regerr2nsresult( mErr );
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// Test result.
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if( rv != NS_OK ) {
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// Didn't get result, free buffer.
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PR_Free( *result );
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*result = 0;
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}
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} else {
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// Couldn't allocate buffer.
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rv = NS_ERROR_OUT_OF_MEMORY;
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}
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} else {
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// They asked for the wrong type of value.
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rv = regerr2nsresult( REGERR_BADTYPE );
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}
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}
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} else {
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rv = NS_ERROR_NULL_POINTER;
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}
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return rv;
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}
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/*--------------------------- nsRegistry::SetString ----------------------------
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| Simply sets the registry contents using NR_RegSetEntryString. |
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------------------------------------------------------------------------------*/
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NS_IMETHODIMP nsRegistry::SetString( Key baseKey, const char *path, const char *value ) {
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nsresult rv = NS_OK;
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// Set the contents.
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mErr = NR_RegSetEntryString( mReg,(RKEY)baseKey,(char*)path,(char*)value );
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// Convert result.
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rv = regerr2nsresult( mErr );
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return rv;
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}
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/*---------------------------- nsRegistry::GetInt ------------------------------
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| This function is just shorthand for fetching a 1-element int32 array. We |
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| implement it "manually" using NR_RegGetEntry(versus calling GetIntArray) |
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| to save allocating a copy of the result. |
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------------------------------------------------------------------------------*/
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NS_IMETHODIMP nsRegistry::GetInt( Key baseKey, const char *path, int32 *result ) {
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nsresult rv = NS_OK;
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// Make sure caller gave us place for result.
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if( result ) {
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// Get info about the requested entry.
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uint32 type;
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rv = GetValueType( baseKey, path, &type );
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// See if that worked.
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if( rv == NS_OK ) {
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// Make sure the entry is an int32 array.
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if( type == Int32 ) {
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uint32 len = sizeof *result;
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// Get int from registry into result field.
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mErr = NR_RegGetEntry( mReg,(RKEY)baseKey,(char*)path, result, &len );
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// Convert status.
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rv = regerr2nsresult( mErr );
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} else {
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// They asked for the wrong type of value.
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rv = NS_ERROR_REG_BADTYPE;
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}
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}
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} else {
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rv = NS_ERROR_NULL_POINTER;
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}
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return rv;
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}
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/*---------------------------- nsRegistry::SetInt ------------------------------
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| Write out the value as a one-element int32 array, using NR_RegSetEntry. |
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------------------------------------------------------------------------------*/
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NS_IMETHODIMP nsRegistry::SetInt( Key baseKey, const char *path, int32 value ) {
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nsresult rv = NS_OK;
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// Set the contents.
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mErr = NR_RegSetEntry( mReg,
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(RKEY)baseKey,
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(char*)path,
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REGTYPE_ENTRY_INT32_ARRAY,
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&value,
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sizeof value );
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// Convert result.
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rv = regerr2nsresult( mErr );
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return rv;
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}
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|
|
/*--------------------------- nsRegistry::GetBytes -----------------------------
|
|
| Get the registry contents at specified location using NR_RegGetEntry. |
|
|
------------------------------------------------------------------------------*/
|
|
NS_IMETHODIMP nsRegistry::GetBytes( Key baseKey, const char *path, void **result, uint32 *len ) {
|
|
nsresult rv = NS_OK;
|
|
|
|
// Make sure caller gave us place for result.
|
|
if( result && len ) {
|
|
// Get info about the requested entry.
|
|
uint32 type;
|
|
rv = GetValueType( baseKey, path, &type );
|
|
// See if that worked.
|
|
if( rv == NS_OK ) {
|
|
// Make sure the entry is bytes.
|
|
if( type == Bytes ) {
|
|
// Get bytes from registry into result field.
|
|
mErr = NR_RegGetEntry( mReg,(RKEY)baseKey,(char*)path, result, len );
|
|
// Convert status.
|
|
rv = regerr2nsresult( mErr );
|
|
} else {
|
|
// They asked for the wrong type of value.
|
|
rv = NS_ERROR_REG_BADTYPE;
|
|
}
|
|
}
|
|
} else {
|
|
rv = NS_ERROR_NULL_POINTER;
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
/*--------------------------- nsRegistry::SetBytes -----------------------------
|
|
| Set the contents at the specified registry location, using NR_RegSetEntry. |
|
|
------------------------------------------------------------------------------*/
|
|
NS_IMETHODIMP nsRegistry::SetBytes( Key baseKey, const char *path, void *value, uint32 len ) {
|
|
nsresult rv = NS_OK;
|
|
// Set contents.
|
|
mErr = NR_RegSetEntry( mReg,(RKEY)baseKey,(char*)path,
|
|
REGTYPE_ENTRY_BYTES, value, len );
|
|
// Convert result;
|
|
rv = regerr2nsresult( mErr );
|
|
return rv;
|
|
}
|
|
|
|
/*-------------------------- nsRegistry::GetIntArray ---------------------------
|
|
| Find out about the entry using GetValueInfo. We check the type and then |
|
|
| use NR_RegGetEntry to get the actual array. We have to convert from the |
|
|
| array dimension to number of bytes in the process. |
|
|
------------------------------------------------------------------------------*/
|
|
NS_IMETHODIMP nsRegistry::GetIntArray( Key baseKey, const char *path, int32 **result, uint32 *len ) {
|
|
nsresult rv = NS_OK;
|
|
|
|
// Make sure caller gave us place for result.
|
|
if( result && len ) {
|
|
// Get info about the requested entry.
|
|
uint32 type, length;
|
|
rv = GetValueType( baseKey, path, &type );
|
|
if ( rv == NS_OK ) {
|
|
rv = GetValueLength( baseKey, path, &length );
|
|
}
|
|
// See if that worked.
|
|
if( rv == NS_OK ) {
|
|
// Make sure the entry is bytes.
|
|
if( type == Int32 ) {
|
|
// Allocate space for result.
|
|
*len = length * sizeof(int32);
|
|
*result =(int32*)PR_Malloc( *len );
|
|
// Make sure that worked.
|
|
if( *result ) {
|
|
// Get array from registry into result field.
|
|
mErr = NR_RegGetEntry( mReg,(RKEY)baseKey,(char*)path, *result, len );
|
|
// Convert status.
|
|
if( mErr == REGERR_OK ) {
|
|
// Convert size in bytes to array dimension.
|
|
*len /= sizeof(int32);
|
|
} else {
|
|
rv = regerr2nsresult( mErr );
|
|
// Free buffer that we allocated(error will tell caller not to).
|
|
PR_Free( *result );
|
|
*result = 0;
|
|
}
|
|
} else {
|
|
rv = NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
} else {
|
|
// They asked for the wrong type of value.
|
|
rv = NS_ERROR_REG_BADTYPE;
|
|
}
|
|
}
|
|
} else {
|
|
rv = NS_ERROR_NULL_POINTER;
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
/*-------------------------- nsRegistry::SetIntArray ---------------------------
|
|
| Store the given integer array at the given point in the registry. The |
|
|
| length given is the size of the array, we have to convert that to the |
|
|
| size in bytes in order to use NR_RegSetEntry. |
|
|
------------------------------------------------------------------------------*/
|
|
NS_IMETHODIMP nsRegistry::SetIntArray( Key baseKey, const char *path, const int32 *value, uint32 len ) {
|
|
nsresult rv = NS_OK;
|
|
// Convert array dimension to byte count.
|
|
uint32 size = len * sizeof(int32);
|
|
// Set contents.
|
|
mErr = NR_RegSetEntry( mReg,(RKEY)baseKey,(char*)path,
|
|
REGTYPE_ENTRY_INT32_ARRAY,(void*)value, size );
|
|
// Convert result.
|
|
rv = regerr2nsresult( mErr );
|
|
return rv;
|
|
}
|
|
|
|
/*-------------------------- nsRegistry::AddSubtree ----------------------------
|
|
| Add a new registry subkey with the specified name, using NR_RegAddKey. |
|
|
------------------------------------------------------------------------------*/
|
|
NS_IMETHODIMP nsRegistry::AddSubtree( Key baseKey, const char *path, Key *result ) {
|
|
nsresult rv = NS_OK;
|
|
// Add the subkey.
|
|
mErr = NR_RegAddKey( mReg,(RKEY)baseKey,(char*)path,(RKEY*)result );
|
|
// Convert result.
|
|
rv = regerr2nsresult( mErr );
|
|
return rv;
|
|
}
|
|
|
|
/*------------------------- nsRegistry::RemoveSubtree --------------------------
|
|
| Deletes the subtree at a given location using NR_RegDeleteKey. |
|
|
------------------------------------------------------------------------------*/
|
|
NS_IMETHODIMP nsRegistry::RemoveSubtree( Key baseKey, const char *path ) {
|
|
nsresult rv = NS_OK;
|
|
// Delete the subkey.
|
|
mErr = NR_RegDeleteKey( mReg,(RKEY)baseKey,(char*)path );
|
|
// Convert result.
|
|
rv = regerr2nsresult( mErr );
|
|
return rv;
|
|
}
|
|
|
|
/*-------------------------- nsRegistry::GetSubtree ----------------------------
|
|
| Returns a nsIRegistry::Key(RKEY) for a given key/path. The key is |
|
|
| obtained using NR_RegGetKey. |
|
|
------------------------------------------------------------------------------*/
|
|
NS_IMETHODIMP nsRegistry::GetSubtree( Key baseKey, const char *path, Key *result ) {
|
|
nsresult rv = NS_OK;
|
|
// Make sure we have a place for the result.
|
|
if( result ) {
|
|
// Get key.
|
|
mErr = NR_RegGetKey( mReg,(RKEY)baseKey,(char*)path,(RKEY*)result );
|
|
// Convert result.
|
|
rv = regerr2nsresult( mErr );
|
|
} else {
|
|
rv = NS_ERROR_NULL_POINTER;
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
/*----------------------- nsRegistry::EnumerateSubtrees ------------------------
|
|
| Allocate a nsRegSubtreeEnumerator object and return it to the caller. |
|
|
| We construct the enumerator using the registry handle from this registry |
|
|
| object, the user-specified registry key, and indicate that we don't want |
|
|
| to recurse down subtrees. No libreg functions are invoked at this point |
|
|
|(that will happen when the enumerator member functions are called). |
|
|
------------------------------------------------------------------------------*/
|
|
NS_IMETHODIMP nsRegistry::EnumerateSubtrees( Key baseKey, nsIEnumerator **result ) {
|
|
nsresult rv = NS_OK;
|
|
// Make sure we have a place to put the result.
|
|
if( result ) {
|
|
*result = new nsRegSubtreeEnumerator( mReg,(RKEY)baseKey, PR_FALSE );
|
|
// Check for success.
|
|
if( *result ) {
|
|
// Bump refcnt on behalf of caller.
|
|
(*result)->AddRef();
|
|
} else {
|
|
// Unable to allocate space for the enumerator object.
|
|
rv = NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
} else {
|
|
rv = NS_ERROR_NULL_POINTER;
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
/*--------------------- nsRegistry::EnumerateAllSubtrees -----------------------
|
|
| Same as EnumerateSubtrees but we pass PR_TRUE to request that the |
|
|
| enumerator object descend subtrees when it is used. |
|
|
------------------------------------------------------------------------------*/
|
|
NS_IMETHODIMP nsRegistry::EnumerateAllSubtrees( Key baseKey, nsIEnumerator **result ) {
|
|
nsresult rv = NS_OK;
|
|
// Make sure we have a place to put the result.
|
|
if( result ) {
|
|
*result = new nsRegSubtreeEnumerator( mReg,(RKEY)baseKey, PR_TRUE );
|
|
// Check for success.
|
|
if( *result ) {
|
|
// Bump refcnt on behalf of caller.
|
|
(*result)->AddRef();
|
|
} else {
|
|
// Unable to allocate space for the enumerator object.
|
|
rv = NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
} else {
|
|
rv = NS_ERROR_NULL_POINTER;
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
/*------------------------- nsRegistry::GetValueType ---------------------------
|
|
| Gets the type from the registry using the NR_GetEntryInfo libreg API. |
|
|
| The result is transferred to the uint32 value passed in (with conversion |
|
|
| to the appropriate nsIRegistry::DataType value). |
|
|
------------------------------------------------------------------------------*/
|
|
NS_IMETHODIMP nsRegistry::GetValueType( Key baseKey, const char *path, uint32 *result ) {
|
|
nsresult rv = NS_OK;
|
|
// Make sure we have a place to put the result.
|
|
if( result ) {
|
|
// Get registry info into local structure.
|
|
REGINFO info = { sizeof info, 0, 0 };
|
|
mErr = NR_RegGetEntryInfo( mReg,(RKEY)baseKey,(char*)path, &info );
|
|
if( mErr == REGERR_OK ) {
|
|
// Copy info to user's result value.
|
|
reginfo2DataType( info, *result );
|
|
} else {
|
|
rv = regerr2nsresult( mErr );
|
|
}
|
|
} else {
|
|
rv = NS_ERROR_NULL_POINTER;
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
/*------------------------ nsRegistry::GetValueLength --------------------------
|
|
| Gets the registry value info via NR_RegGetEntryInfo. The length is |
|
|
| converted to the proper "units" via reginfo2Length. |
|
|
------------------------------------------------------------------------------*/
|
|
NS_IMETHODIMP nsRegistry::GetValueLength( Key baseKey, const char *path, uint32 *result ) {
|
|
nsresult rv = NS_OK;
|
|
// Make sure we have a place to put the result.
|
|
if( result ) {
|
|
// Get registry info into local structure.
|
|
REGINFO info = { sizeof info, 0, 0 };
|
|
mErr = NR_RegGetEntryInfo( mReg,(RKEY)baseKey,(char*)path, &info );
|
|
if( mErr == REGERR_OK ) {
|
|
// Copy info to user's result value.
|
|
reginfo2Length( info, *result );
|
|
} else {
|
|
rv = regerr2nsresult( mErr );
|
|
}
|
|
} else {
|
|
rv = NS_ERROR_NULL_POINTER;
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
/*------------------------ nsRegistry::EnumerateValues -------------------------
|
|
| Allocates and returns an instance of nsRegValueEnumerator constructed in |
|
|
| a similar fashion as the nsRegSubtreeEnumerator is allocated/returned by |
|
|
| EnumerateSubtrees. |
|
|
------------------------------------------------------------------------------*/
|
|
NS_IMETHODIMP nsRegistry::EnumerateValues( Key baseKey, nsIEnumerator **result ) {
|
|
nsresult rv = NS_OK;
|
|
// Make sure we have a place to put the result.
|
|
if( result ) {
|
|
*result = new nsRegValueEnumerator( mReg,(RKEY)baseKey );
|
|
// Check for success.
|
|
if( *result ) {
|
|
// Bump refcnt on behalf of caller.
|
|
(*result)->AddRef();
|
|
} else {
|
|
// Unable to allocate space for the enumerator object.
|
|
rv = NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
} else {
|
|
rv = NS_ERROR_NULL_POINTER;
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
/*---------------------- nsRegistry::GetCurrentUserName ------------------------
|
|
| Simple wrapper for NR_RegGetUsername. |
|
|
------------------------------------------------------------------------------*/
|
|
NS_IMETHODIMP nsRegistry::GetCurrentUserName( char **result ) {
|
|
nsresult rv = NS_OK;
|
|
// Make sure we have a place to put the result.
|
|
if( result ) {
|
|
// Get the user name.
|
|
mErr = NR_RegGetUsername( result );
|
|
// Convert the result.
|
|
rv = regerr2nsresult( mErr );
|
|
} else {
|
|
rv = NS_ERROR_NULL_POINTER;
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
/*---------------------- nsRegistry::SetCurrentUserName ------------------------
|
|
| Simple wrapper for NR_RegSetUsername. |
|
|
------------------------------------------------------------------------------*/
|
|
NS_IMETHODIMP nsRegistry::SetCurrentUserName( const char *name ) {
|
|
nsresult rv = NS_OK;
|
|
// Set the user name.
|
|
mErr = NR_RegSetUsername( name );
|
|
// Convert result.
|
|
rv = regerr2nsresult( mErr );
|
|
return rv;
|
|
}
|
|
|
|
/*----------------------------- nsRegistry::Pack -------------------------------
|
|
| Simple wrapper for NR_RegPack. We don't set up any callback. |
|
|
------------------------------------------------------------------------------*/
|
|
NS_IMETHODIMP nsRegistry::Pack() {
|
|
nsresult rv = NS_OK;
|
|
// Pack the registry.
|
|
mErr = NR_RegPack( mReg, 0, 0 );
|
|
// Convert result.
|
|
rv = regerr2nsresult( mErr );
|
|
return rv;
|
|
}
|
|
|
|
/*-------------- nsRegSubtreeEnumerator::nsRegSubtreeEnumerator ----------------
|
|
| The ctor simply stashes all the information that will be needed to enumerate |
|
|
| the subkeys. |
|
|
------------------------------------------------------------------------------*/
|
|
nsRegSubtreeEnumerator::nsRegSubtreeEnumerator( HREG hReg, RKEY rKey, PRBool all )
|
|
: mReg( hReg ), mKey( rKey ), mEnum( 0 ), mNext( 0 ),
|
|
mStyle( all ? REGENUM_DESCEND : 0 ), mDone( PR_FALSE ), mErr( -1 ) {
|
|
NS_INIT_REFCNT();
|
|
return;
|
|
}
|
|
|
|
/*----------------------- nsRegSubtreeEnumerator::First ------------------------
|
|
| Set mEnum to 0; this will cause the next NR_RegEnum call to go to |
|
|
| the beginning. We then do a Next() call in order to do a "lookahead" to |
|
|
| properly detect an empty list (i.e., set the mDone flag). |
|
|
------------------------------------------------------------------------------*/
|
|
NS_IMETHODIMP
|
|
nsRegSubtreeEnumerator::First() {
|
|
nsresult rv = NS_OK;
|
|
// Reset "done" flag.
|
|
mDone = PR_FALSE;
|
|
// Go to beginning.
|
|
mEnum = mNext = 0;
|
|
// Lookahead so mDone flag gets set for empty list.
|
|
rv = Next();
|
|
return rv;
|
|
}
|
|
|
|
/*----------------------- nsRegSubtreeEnumerator::Next -------------------------
|
|
| First, we check if we've already advanced to the end by checking the mDone |
|
|
| flag. |
|
|
| |
|
|
| We advance mEnum to the next enumeration value which is in the mNext |
|
|
| lookahead buffer. We must then call advance to lookahead and properly set |
|
|
| the isDone flag. |
|
|
------------------------------------------------------------------------------*/
|
|
NS_IMETHODIMP
|
|
nsRegSubtreeEnumerator::Next() {
|
|
nsresult rv = NS_OK;
|
|
// Check for at end.
|
|
if ( !mDone ) {
|
|
// Advance to next spot.
|
|
mEnum = mNext;
|
|
// Lookahead so mDone is properly set (and to update mNext).
|
|
rv = advance();
|
|
} else {
|
|
// Set result accordingly.
|
|
rv = regerr2nsresult( REGERR_NOMORE );
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
/*---------------------- nsRegSubtreeEnumerator::advance -----------------------
|
|
| Advance mNext to next subkey using NR_RegEnumSubkeys. We set mDone if |
|
|
| there are no more subkeys. |
|
|
------------------------------------------------------------------------------*/
|
|
NS_IMETHODIMP nsRegSubtreeEnumerator::advance() {
|
|
char name[MAXREGPATHLEN];
|
|
uint32 len = sizeof name;
|
|
mErr = NR_RegEnumSubkeys( mReg, mKey, &mNext, name, len, mStyle );
|
|
// See if we ran off end.
|
|
if( mErr == REGERR_NOMORE ) {
|
|
// Remember we've run off end.
|
|
mDone = PR_TRUE;
|
|
}
|
|
// Convert result.
|
|
nsresult rv = regerr2nsresult( mErr );
|
|
return rv;
|
|
};
|
|
|
|
/*-------------------- nsRegSubtreeEnumerator::CurrentItem ---------------------
|
|
| Allocates and returns a new instance of class nsRegistryNode. The node |
|
|
| object will hold the curent mEnum value so it can obtain its name from |
|
|
| the registry when asked. |
|
|
------------------------------------------------------------------------------*/
|
|
NS_IMETHODIMP
|
|
nsRegSubtreeEnumerator::CurrentItem( nsISupports **result) {
|
|
nsresult rv = NS_OK;
|
|
// Make sure there is a place to put the result.
|
|
if( result ) {
|
|
*result = new nsRegistryNode( mReg, mKey, mEnum );
|
|
if( *result ) {
|
|
(*result)->AddRef();
|
|
} else {
|
|
rv = NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
} else {
|
|
rv = NS_ERROR_NULL_POINTER;
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
/*---------------------- nsRegSubtreeEnumerator::IsDone ------------------------
|
|
| Simply return mDone. |
|
|
------------------------------------------------------------------------------*/
|
|
NS_IMETHODIMP
|
|
nsRegSubtreeEnumerator::IsDone() {
|
|
nsresult rv = mDone;
|
|
return rv;
|
|
}
|
|
|
|
|
|
/*---------------- nsRegValueEnumerator::nsRegValueEnumerator ------------------
|
|
| Delegates everything to the base class constructor. |
|
|
------------------------------------------------------------------------------*/
|
|
nsRegValueEnumerator::nsRegValueEnumerator( HREG hReg, RKEY rKey )
|
|
: nsRegSubtreeEnumerator( hReg, rKey, PR_FALSE ) {
|
|
return;
|
|
}
|
|
|
|
|
|
/*--------------------- nsRegValueEnumerator::CurrentItem ----------------------
|
|
| As the nsRegSubtreeEnumerator counterpart, but allocates an object of |
|
|
| class nsRegistryValue. |
|
|
------------------------------------------------------------------------------*/
|
|
NS_IMETHODIMP
|
|
nsRegValueEnumerator::CurrentItem( nsISupports **result ) {
|
|
nsresult rv = NS_OK;
|
|
// Make sure there is a place to put the result.
|
|
if( result ) {
|
|
*result = new nsRegistryValue( mReg, mKey, mEnum );
|
|
if( *result ) {
|
|
(*result)->AddRef();
|
|
} else {
|
|
rv = NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
} else {
|
|
rv = NS_ERROR_NULL_POINTER;
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
/*----------------------- nsRegValueEnumerator::advance ------------------------
|
|
| Advance mNext to next subkey using NR_RegEnumEntries. We set mDone if |
|
|
| there are no more entries. |
|
|
------------------------------------------------------------------------------*/
|
|
NS_IMETHODIMP nsRegValueEnumerator::advance() {
|
|
char name[MAXREGNAMELEN];
|
|
uint32 len = sizeof name;
|
|
REGINFO info = { sizeof info, 0, 0 };
|
|
mErr = NR_RegEnumEntries( mReg, mKey, &mNext, name, len, &info );
|
|
// See if we ran off end.
|
|
if( mErr == REGERR_NOMORE ) {
|
|
// Remember we've run off end.
|
|
mDone = PR_TRUE;
|
|
}
|
|
// Convert result.
|
|
nsresult rv = regerr2nsresult( mErr );
|
|
return rv;
|
|
};
|
|
|
|
|
|
/*---------------------- nsRegistryNode::nsRegistryNode ------------------------
|
|
| Store the arguments in the corresponding data members and initialize |
|
|
| the other data members. We defer the libreg calls till we're asked for |
|
|
| our name. We use mErr==-1 to indicate we haven't fetched the name yet. |
|
|
------------------------------------------------------------------------------*/
|
|
nsRegistryNode::nsRegistryNode( HREG hReg, RKEY key, REGENUM slot )
|
|
: mReg( hReg ), mKey( key ), mEnum( slot ), mErr( -1 ) {
|
|
NS_INIT_REFCNT();
|
|
return;
|
|
}
|
|
|
|
|
|
/*-------------------------------- PR_strdup -----------------------------------
|
|
| Utility function that does PR_Malloc and copies argument string. Caller |
|
|
| must do PR_Free. |
|
|
------------------------------------------------------------------------------*/
|
|
static char *PR_strdup( const char *in ) {
|
|
char *result = (char*)PR_Malloc( strlen( in ) + 1 );
|
|
if ( result ) {
|
|
strcpy( result, in );
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/*-------------------------- nsRegistryNode::GetName ---------------------------
|
|
| If we haven't fetched it yet, get the name of the corresponding subkey now, |
|
|
| using NR_RegEnumSubkeys. |
|
|
------------------------------------------------------------------------------*/
|
|
NS_IMETHODIMP nsRegistryNode::GetName( char **result ) {
|
|
nsresult rv = NS_OK;
|
|
// Make sure there is a place to put the result.
|
|
if( result ) {
|
|
// Test whether we haven't tried to get it yet.
|
|
if( mErr == -1 ) {
|
|
REGENUM temp = mEnum;
|
|
// Get name.
|
|
mErr = NR_RegEnumSubkeys( mReg, mKey, &temp, mName, sizeof mName, PR_FALSE );
|
|
}
|
|
// Convert result from prior libreg call.
|
|
rv = regerr2nsresult( mErr );
|
|
if( rv == NS_OK || rv == NS_ERROR_REG_NO_MORE ) {
|
|
// worked, return actual result.
|
|
*result = PR_strdup( mName );
|
|
if ( *result ) {
|
|
rv = NS_OK;
|
|
} else {
|
|
rv = NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
}
|
|
} else {
|
|
rv = NS_ERROR_NULL_POINTER;
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
|
|
|
|
/*--------------------- nsRegistryValue::nsRegistryValue -----------------------
|
|
| Implemented the same way as the nsRegistryNode ctor. |
|
|
------------------------------------------------------------------------------*/
|
|
nsRegistryValue::nsRegistryValue( HREG hReg, RKEY key, REGENUM slot )
|
|
: mReg( hReg ), mKey( key ), mEnum( slot ), mErr( -1 ) {
|
|
NS_INIT_REFCNT();
|
|
return;
|
|
}
|
|
|
|
/*------------------------- nsRegistryValue::GetName ---------------------------
|
|
| See nsRegistryNode::GetName; we use NR_RegEnumEntries in this case. |
|
|
------------------------------------------------------------------------------*/
|
|
NS_IMETHODIMP nsRegistryValue::GetName( char **result ) {
|
|
nsresult rv = NS_OK;
|
|
// Make sure we have a place to put the result.
|
|
if( result ) {
|
|
// Ensure we've got the info we need.
|
|
rv = getInfo();
|
|
if( rv == NS_OK || rv == NS_ERROR_REG_NO_MORE ) {
|
|
// worked, return actual result.
|
|
*result = PR_strdup( mName );
|
|
if ( *result ) {
|
|
rv = NS_OK;
|
|
} else {
|
|
rv = NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
}
|
|
} else {
|
|
rv = NS_ERROR_NULL_POINTER;
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
/*----------------------- nsRegistryValue::GetValueType ------------------------
|
|
| We test if we've got the info already. If not, we git it by calling |
|
|
| getInfo. We calculate the result by converting the REGINFO type field to |
|
|
| a nsIRegistry::DataType value (using reginfo2DataType). |
|
|
------------------------------------------------------------------------------*/
|
|
NS_IMETHODIMP nsRegistryValue::GetValueType( uint32 *result ) {
|
|
nsresult rv = NS_OK;
|
|
// Make sure we have room for th result.
|
|
if( result ) {
|
|
// Make sure we've got the info we need.
|
|
rv = getInfo();
|
|
// Check if it worked.
|
|
if( rv == NS_OK ) {
|
|
// Convert result from REGINFO to nsIRegistry::ValueInfo.
|
|
reginfo2DataType( mInfo, *result );
|
|
}
|
|
} else {
|
|
rv = NS_ERROR_NULL_POINTER;
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
/*---------------------- nsRegistryValue::GetValueLength -----------------------
|
|
| We test if we've got the info already. If not, we git it by calling |
|
|
| getInfo. We calculate the result by converting the REGINFO type field to |
|
|
| a nsIRegistry::DataType value (using reginfo2Length). |
|
|
------------------------------------------------------------------------------*/
|
|
NS_IMETHODIMP nsRegistryValue::GetValueLength( uint32 *result ) {
|
|
nsresult rv = NS_OK;
|
|
// Make sure we have room for th result.
|
|
if( result ) {
|
|
// Make sure we've got the info we need.
|
|
rv = getInfo();
|
|
// Check if it worked.
|
|
if( rv == NS_OK ) {
|
|
// Convert result from REGINFO to length.
|
|
reginfo2Length( mInfo, *result );
|
|
}
|
|
} else {
|
|
rv = NS_ERROR_NULL_POINTER;
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
/*------------------------- nsRegistryValue::getInfo ---------------------------
|
|
| Call NR_RegEnumEntries to set the mInfo/mName data members. |
|
|
------------------------------------------------------------------------------*/
|
|
nsresult nsRegistryValue::getInfo() {
|
|
nsresult rv = NS_OK;
|
|
// Test whether we haven't tried to get it yet.
|
|
if( mErr == -1 ) {
|
|
REGENUM temp = mEnum;
|
|
// Get name and info.
|
|
mErr = NR_RegEnumEntries( mReg, mKey, &temp, mName, sizeof mName, &mInfo );
|
|
// Convert result.
|
|
rv = regerr2nsresult( mErr );
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
|
|
nsRegistryFactory::nsRegistryFactory() {
|
|
NS_INIT_REFCNT();
|
|
}
|
|
|
|
NS_IMPL_ISUPPORTS(nsRegistryFactory, kIFactoryIID);
|
|
|
|
NS_IMETHODIMP
|
|
nsRegistryFactory::CreateInstance(nsISupports *aOuter,
|
|
const nsIID &aIID,
|
|
void **aResult) {
|
|
nsresult rv = NS_OK;
|
|
nsRegistry* newRegistry;
|
|
|
|
if(aResult == NULL) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
} else {
|
|
*aResult = NULL;
|
|
}
|
|
|
|
if(0 != aOuter) {
|
|
return NS_ERROR_NO_AGGREGATION;
|
|
}
|
|
|
|
NS_NEWXPCOM(newRegistry, nsRegistry);
|
|
|
|
if(newRegistry == NULL) {
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
|
|
NS_ADDREF(newRegistry);
|
|
rv = newRegistry->QueryInterface(aIID, aResult);
|
|
NS_RELEASE(newRegistry);
|
|
|
|
return rv;
|
|
}
|
|
|
|
nsresult
|
|
nsRegistryFactory::LockFactory(PRBool aLock)
|
|
{
|
|
// Not implemented in simplest case.
|
|
return NS_OK;
|
|
}
|
|
|
|
// This is a temporary hack; needs work to support dynamic binding
|
|
// via nsComponentManager and support for multiple factories per DLL.
|
|
extern "C" NS_EXPORT nsresult
|
|
NS_RegistryGetFactory(nsISupports* servMgr, nsIFactory** aFactory ) {
|
|
nsresult rv = NS_OK;
|
|
|
|
if( aFactory == 0 ) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
} else {
|
|
*aFactory = 0;
|
|
}
|
|
|
|
nsIFactory* inst = new nsRegistryFactory();
|
|
if(0 == inst) {
|
|
rv = NS_ERROR_OUT_OF_MEMORY;
|
|
} else {
|
|
NS_ADDREF(inst);
|
|
*aFactory = inst;
|
|
}
|
|
|
|
return rv;
|
|
}
|