[gparted/psusi/refactor: 15/16] Combine duplicate code for ext[234]

[Phillip Susi <psusi src gnome org>]

commit 77a6b002315cecf13d0ad11c9619cea4d82b453d
Author: Phillip Susi <psusi ubuntu com>
Date:   Mon Jan 21 15:41:24 2013 -0500

    Combine duplicate code for ext[234]
    
    There were separate modules for ext3 and ext4 even though there
    were virtually no differences with ext2.  Remove the duplicate
    modules and patch ext2 to serve as a common reference for all
    three sub types.

 include/ext2.h      |    2 +
 include/ext3.h      |   53 -------------
 include/ext4.h      |   52 ------------
 src/GParted_Core.cc |    8 +-
 src/Makefile.am     |    2 -
 src/ext2.cc         |    9 ++-
 src/ext3.cc         |  215 --------------------------------------------------
 src/ext4.cc         |  217 ---------------------------------------------------
 8 files changed, 11 insertions(+), 547 deletions(-)
---
diff --git a/include/ext2.h b/include/ext2.h
index 6b76d62..8d4f9dc 100644
--- a/include/ext2.h
+++ b/include/ext2.h
@@ -27,7 +27,9 @@ namespace GParted
 
 class ext2 : public FileSystem
 {
+	const enum FILESYSTEM specific_type;
 public:
+	ext2( enum FILESYSTEM type ) : specific_type( type ) {};
 	FS get_filesystem_support() ;
 	void set_used_sectors( Partition & partition ) ;
 	void read_label( Partition & partition ) ;
diff --git a/src/GParted_Core.cc b/src/GParted_Core.cc
index ee0d458..3410050 100644
--- a/src/GParted_Core.cc
+++ b/src/GParted_Core.cc
@@ -33,8 +33,6 @@
 #include "../include/btrfs.h"
 #include "../include/exfat.h"
 #include "../include/ext2.h"
-#include "../include/ext3.h"
-#include "../include/ext4.h"
 #include "../include/fat16.h"
 #include "../include/fat32.h"
 #include "../include/linux_swap.h"
@@ -99,9 +97,9 @@ void GParted_Core::find_supported_filesystems()
 
 	FILESYSTEM_MAP[ FS_BTRFS ]	= new btrfs() ;
 	FILESYSTEM_MAP[ FS_EXFAT ]	= new exfat() ;
-	FILESYSTEM_MAP[ FS_EXT2 ]	= new ext2() ;
-	FILESYSTEM_MAP[ FS_EXT3 ]	= new ext3() ;
-	FILESYSTEM_MAP[ FS_EXT4 ]	= new ext4() ;
+	FILESYSTEM_MAP[ FS_EXT2 ]	= new ext2( FS_EXT2 ) ;
+	FILESYSTEM_MAP[ FS_EXT3 ]	= new ext2( FS_EXT3 ) ;
+	FILESYSTEM_MAP[ FS_EXT4 ]	= new ext2( FS_EXT4 ) ;
 	FILESYSTEM_MAP[ FS_FAT16 ]	= new fat16() ;
 	FILESYSTEM_MAP[ FS_FAT32 ]	= new fat32() ;
 	FILESYSTEM_MAP[ FS_HFS ]	= new hfs() ;
diff --git a/src/Makefile.am b/src/Makefile.am
index d5ec826..081f569 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -50,8 +50,6 @@ gpartedbin_SOURCES = \
 	btrfs.cc			\
 	exfat.cc			\
 	ext2.cc				\
-	ext3.cc				\
-	ext4.cc				\
 	fat16.cc			\
 	fat32.cc			\
 	hfs.cc				\
diff --git a/src/ext2.cc b/src/ext2.cc
index 56e38eb..c69a737 100644
--- a/src/ext2.cc
+++ b/src/ext2.cc
@@ -24,7 +24,7 @@ namespace GParted
 FS ext2::get_filesystem_support()
 {
 	FS fs ;
-	fs .filesystem = FS_EXT2 ;
+	fs .filesystem = specific_type;
 
 	if ( ! Glib::find_program_in_path( "dumpe2fs" ) .empty() )
 		fs .read = FS::EXTERNAL ;
@@ -39,7 +39,7 @@ FS ext2::get_filesystem_support()
 		fs .write_label = FS::EXTERNAL ;
 	}
 	
-	if ( ! Glib::find_program_in_path( "mkfs.ext2" ) .empty() )
+	if ( ! Glib::find_program_in_path( "mke2fs" ) .empty() )
 		fs .create = FS::EXTERNAL ;
 	
 	if ( ! Glib::find_program_in_path( "e2fsck" ) .empty() )
@@ -167,7 +167,10 @@ bool ext2::write_uuid( const Partition & partition, OperationDetail & operationd
 
 bool ext2::create( const Partition & new_partition, OperationDetail & operationdetail )
 {
-	return ! execute_command( "mkfs.ext2 -L \"" + new_partition .get_label() + "\" " + new_partition .get_path(), operationdetail ) ;
+	return ! execute_command( "mke2fs -t " +
+				  Utils::get_filesystem_string( specific_type ) +
+				  " -L \"" + new_partition.get_label() + "\" " + new_partition.get_path(),
+				  operationdetail) ;
 }
 
 bool ext2::resize( const Partition & partition_new, OperationDetail & operationdetail, bool fill_partition )