[gparted] Display progress for mke2fs (#467925)

[Curtis Gedak <gedakc src gnome org>]

commit baea186138cc08cac1f13f28300ca0f4b09ae16d
Author: Phillip Susi <psusi ubuntu com>
Date:   Sat Mar 2 10:24:54 2013 -0500

    Display progress for mke2fs (#467925)
    
    Bug 467925 - gparted: add progress bar during operation

 include/ext2.h |    1 +
 src/ext2.cc    |   25 ++++++++++++++++++++++---
 2 files changed, 23 insertions(+), 3 deletions(-)
---
diff --git a/include/ext2.h b/include/ext2.h
index 96df48e..fddf48f 100644
--- a/include/ext2.h
+++ b/include/ext2.h
@@ -55,6 +55,7 @@ public:
 
 private:
        void resize_progress( OperationDetail *operationdetail );
+       void create_progress( OperationDetail *operationdetail );
 };
 
 } //GParted
diff --git a/src/ext2.cc b/src/ext2.cc
index bf653dd..6a11db5 100644
--- a/src/ext2.cc
+++ b/src/ext2.cc
@@ -220,9 +220,12 @@ bool ext2::write_uuid( const Partition & partition, OperationDetail & operationd
 
 bool ext2::create( const Partition & new_partition, OperationDetail & operationdetail )
 {
-       return ! execute_command( mkfs_cmd + " -F -L \"" + new_partition.get_filesystem_label() + "\" " +
-                                 new_partition.get_path(),
-                                 operationdetail, EXEC_CHECK_STATUS|EXEC_CANCEL_SAFE );
+       sigc::connection c = signal_progress.connect( sigc::mem_fun( *this, &ext2::create_progress ) );
+       bool ret = ! execute_command( mkfs_cmd + " -F -L \"" + new_partition.get_filesystem_label() + "\" " +
+                                     new_partition.get_path(),
+                                     operationdetail, EXEC_CHECK_STATUS|EXEC_CANCEL_SAFE );
+       c.disconnect();
+       return ret;
 }
 
 bool ext2::resize( const Partition & partition_new, OperationDetail & operationdetail, bool fill_partition )
@@ -304,4 +307,20 @@ void ext2::resize_progress( OperationDetail *operationdetail )
        operationdetail->signal_update( *operationdetail );
 }
 
+void ext2::create_progress( OperationDetail *operationdetail )
+{
+       Glib::ustring ss;
+       size_t p = output.find_last_of('\n');
+       // looks like "Writing inode tables: xx/yy"
+       if ( p == output.npos )
+               return;
+       ss = output.substr( p );
+       int x, y;
+       if ( sscanf( ss.c_str(), "\nWriting inode tables: %d/%d", &x, &y ) == 2 )
+       {
+               operationdetail->fraction = (double)x / y;
+               operationdetail->signal_update( *operationdetail );
+       }
+}
+
 } //GParted