Add exFAT support (!30)

With exfatprogs (https://github.com/exfatprogs/exfatprogs) installed the
following operations on exFAT file systems are supported:
- Creation
- Checking
- Labelling
As of the current exfatprogs 1.0.4 the following are not supported:
- Reading usage
- Resizing
- Updating the UUID

Closes !30 - Add exFAT support

README

@@ -261,6 +261,7 @@ provide this support:
 
    btrfs-progs / btrfs-tools
    e2fsprogs
+   exfatprogs
    f2fs-tools
    dosfstools
    mtools          - required to read and write FAT16/32 volume labels

gparted.appdata.xml.in

@@ -18,9 +18,9 @@
     data rescue from lost partitions.
     </_p>
     <_p>
-    GParted works with many file systems including: btrfs, ext2, ext3,
+    GParted works with many file systems including: btrfs, exfat, ext2,
-    ext4, fat16, fat32, hfs, hfs+, linux-swap, lvm2 pv, minix, nilfs2,
+    ext3, ext4, fat16, fat32, hfs, hfs+, linux-swap, lvm2 pv, minix,
-    ntfs, reiserfs, reiser4, udf, ufs, and xfs.
+    nilfs2, ntfs, reiserfs, reiser4, udf, ufs, and xfs.
     </_p>
   </description>
   <launchable type="desktop-id">gparted.desktop</launchable>

include/exfat.h

@@ -14,21 +14,30 @@
  *  along with this program; if not, see <http://www.gnu.org/licenses/>.
  */
 
-
 #ifndef GPARTED_EXFAT_H
 #define GPARTED_EXFAT_H
 
+
 #include "FileSystem.h"
+#include "OperationDetail.h"
+#include "Partition.h"
+
 
 namespace GParted
 {
 
+
 class exfat : public FileSystem
 {
 public:
 	FS get_filesystem_support();
+	bool create(const Partition& new_partition, OperationDetail& operationdetail);
+	void read_label(Partition& partition);
+	bool write_label(const Partition& partition, OperationDetail& operationdetail);
+	bool check_repair(const Partition& partition, OperationDetail& operationdetail);
 };
 
+
 } //GParted
 
 #endif /* GPARTED_EXFAT_H */

src/Utils.cc

@@ -261,7 +261,7 @@ int Utils::get_filesystem_label_maxlength(FSType fstype)
 		//All file systems commented out are not supported for labelling
 		//  by either the new partition or label partition operations.
 		case FS_BTRFS		: return 255 ;
-		//case FS_EXFAT		: return  ;
+		case FS_EXFAT		: return 11;
 		case FS_EXT2		: return 16 ;
 		case FS_EXT3		: return 16 ;
 		case FS_EXT4		: return 16 ;
@@ -433,6 +433,7 @@ Glib::ustring Utils::get_filesystem_software(FSType fstype)
 	switch (fstype)
 	{
 		case FS_BTRFS       : return "btrfs-progs / btrfs-tools" ;
+		case FS_EXFAT       : return "exfatprogs";
 		case FS_EXT2        : return "e2fsprogs" ;
 		case FS_EXT3        : return "e2fsprogs" ;
 		case FS_EXT4        : return "e2fsprogs v1.41+" ;

src/exfat.cc

@@ -16,10 +16,18 @@
 
 #include "exfat.h"
 #include "FileSystem.h"
+#include "OperationDetail.h"
+#include "Partition.h"
+#include "Utils.h"
+
+#include <glibmm/miscutils.h>
+#include <glibmm/shell.h>
+
 
 namespace GParted
 {
 
+
 FS exfat::get_filesystem_support()
 {
 	FS fs( FS_EXFAT );
@@ -29,7 +37,60 @@ FS exfat::get_filesystem_support()
 	fs .move = FS::GPARTED ;
 	fs .online_read = FS::GPARTED ;
 
+	if (! Glib::find_program_in_path("mkfs.exfat").empty())
+		fs.create = FS::EXTERNAL;
+
+	if (! Glib::find_program_in_path("tune.exfat").empty())
+	{
+		fs.read_label = FS::EXTERNAL;
+		fs.write_label = FS::EXTERNAL;
+	}
+
+	if (! Glib::find_program_in_path("fsck.exfat").empty())
+		fs.check = FS::EXTERNAL;
+
 	return fs;
 }
 
+
+bool exfat::create(const Partition& new_partition, OperationDetail& operationdetail)
+{
+	return ! execute_command("mkfs.exfat -L " + Glib::shell_quote(new_partition.get_filesystem_label()) +
+	                         " " + Glib::shell_quote(new_partition.get_path()),
+	                         operationdetail, EXEC_CHECK_STATUS|EXEC_CANCEL_SAFE);
+}
+
+
+void exfat::read_label(Partition& partition)
+{
+	exit_status = Utils::execute_command("tune.exfat -l " + Glib::shell_quote(partition.get_path()),
+	                                     output, error, true);
+	if (exit_status != 0)
+	{
+		if (! output.empty())
+			partition.push_back_message(output);
+		if (! error.empty())
+			partition.push_back_message(error);
+		return;
+	}
+
+	partition.set_filesystem_label(Utils::regexp_label(output, "^label: ([^\n]*)"));
+}
+
+
+bool exfat::write_label(const Partition& partition, OperationDetail& operationdetail)
+{
+	return ! execute_command("tune.exfat -L " + Glib::shell_quote(partition.get_filesystem_label()) +
+	                         " " + Glib::shell_quote(partition.get_path()),
+	                         operationdetail, EXEC_CHECK_STATUS|EXEC_CANCEL_SAFE);
+}
+
+
+bool exfat::check_repair(const Partition& partition, OperationDetail& operationdetail)
+{
+	return ! execute_command("fsck.exfat -v " + Glib::shell_quote(partition.get_path()),
+	                         operationdetail, EXEC_CHECK_STATUS|EXEC_CANCEL_SAFE);
+}
+
+
 } //GParted