[gparted] Create new method make_path_dmraid_compatible

[Curtis Gedak <gedakc src gnome org>]

commit 73e7f85a2f4508f81501083ee56a2483cb2931d7
Author: Curtis Gedak <gedakc gmail com>
Date:   Tue Aug 17 09:27:44 2010 -0600

    Create new method make_path_dmraid_compatible
    
    This method will be used to ensure that the partition path
    matches the name that would be created by the dmraid command.

 include/DMRaid.h |    3 ++-
 src/DMRaid.cc    |   40 +++++++++++++++++++++++++++++++++++++++-
 2 files changed, 41 insertions(+), 2 deletions(-)
---
diff --git a/include/DMRaid.h b/include/DMRaid.h
index 5bfb016..ac7cfc9 100644
--- a/include/DMRaid.h
+++ b/include/DMRaid.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 2009 Curtis Gedak
+/* Copyright (C) 2009, 2010 Curtis Gedak
  *
  *  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
@@ -53,6 +53,7 @@ public:
 	Glib::ustring get_dmraid_name( const Glib::ustring & dev_path ) ;
 	int get_partition_number( const Glib::ustring & partition_name ) ;
 	Glib::ustring get_udev_name( const Glib::ustring & dev_path ) ;
+	Glib::ustring make_path_dmraid_compatible( Glib::ustring partition_path ) ;
 	bool create_dev_map_entries( const Partition & partition, OperationDetail & operationdetail ) ;
 	bool create_dev_map_entries( const Glib::ustring & dev_path ) ;
 	bool delete_affected_dev_map_entries( const Partition & partition, OperationDetail & operationdetail ) ;
diff --git a/src/DMRaid.cc b/src/DMRaid.cc
index b2c9c3d..8554edf 100644
--- a/src/DMRaid.cc
+++ b/src/DMRaid.cc
@@ -1,4 +1,4 @@
-/* Copyright (C) 2009 Curtis Gedak
+/* Copyright (C) 2009, 2010 Curtis Gedak
  *
  *  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
@@ -254,6 +254,44 @@ Glib::ustring DMRaid::get_udev_name( const Glib::ustring & dev_path )
 	return udev_name ;
 }
 
+Glib::ustring DMRaid::make_path_dmraid_compatible( Glib::ustring partition_path )
+{
+	//The purpose of this method is to ensure that the partition name matches
+	//   the name that the dmraid command would create.
+	//
+	//From my experience, the general rule of thumb naming convention for creating
+	//  partition names is as follows:
+	//
+	//  A)  If the device name ends in a number, then append the letter "p" and 
+	//      the partition number to create the partition name.
+	//      For Example:
+	//         Device Name   :  /dev/mapper/isw_cjbdddajhi_Disk0
+	//         Partition Name:  /dev/mapper/isw_cjbdddajhi_Disk0p1
+	//
+	//  B)  If the device name does not end in a number, then append the 
+	//      partition number only to create the partition name.
+	//      For Example:
+	//         Device Name   :  /dev/mapper/isw_cjbdddajhi_Volume
+	//         Partition Name:  /dev/mapper/isw_cjbdddajhi_Volume1
+	//
+	//The dmraid command appears to never add the "p" into the partition name.
+	//  Instead in all cases dmraid simply appends the partition number to the
+	//  device name to create a partition name.
+	//
+	for ( unsigned int k=0; k < dmraid_devices .size(); k++ )
+	{
+		Glib::ustring reg_exp = DEV_MAP_PATH + dmraid_devices[ k ] + "p([0-9]+)" ;
+		Glib::ustring partition_number = Utils::regexp_label( partition_path, reg_exp ) ;
+		if ( ! partition_number .empty() )
+		{
+			partition_path = DEV_MAP_PATH + dmraid_devices[ k ] + partition_number ;
+			break ;
+		}
+	}
+
+	return partition_path ;
+}
+
 bool DMRaid::create_dev_map_entries( const Partition & partition, OperationDetail & operationdetail )
 {
 	//Create all missing dev mapper entries for a specified device.