[ease] [general] Added recursive_copy to utilities.

[Nate Stedman <natesm src gnome org>]

commit 853bce59d3a941b0056181342ee59a501601d958
Author: Nate Stedman <natesm gmail com>
Date:   Fri Jul 23 20:35:12 2010 -0400

    [general] Added recursive_copy to utilities.
    
    recursive_copy replaces all calls of
    Posix.system("cp ...
    
    It uses the new recursive_directory function
    in utilities, as all recursive directory actions
    should going forward.

 src/ease-slide-set.vala |   15 ---------------
 src/ease-theme.vala     |    9 +++++----
 src/ease-utilities.vala |   31 +++++++++++++++++++++++++++++--
 3 files changed, 34 insertions(+), 21 deletions(-)
---
diff --git a/src/ease-slide-set.vala b/src/ease-slide-set.vala
index df2aa5a..833ff29 100644
--- a/src/ease-slide-set.vala
+++ b/src/ease-slide-set.vala
@@ -99,21 +99,6 @@ public abstract class Ease.SlideSet : Object
 	}
 	
 	/**
-	 * Copies all files under Media/ to a new directory.
-	 *
-	 * @param target The path to copy media files to.
-	 */
-	public void copy_media(string target) throws GLib.Error
-	{
-		var origin_path = Path.build_filename(path, MEDIA_PATH);
-		
-		var target_path = Path.build_filename(target, MEDIA_PATH);
-		
-		// TODO: non-system implementation of recursive copy
-		Posix.system("cp -r %s %s".printf(origin_path, target_path));
-	}
-	
-	/**
 	 * Copies a media file to the temporary directory.
 	 *
 	 * Returns the path to the new file, as it should be stored in the
diff --git a/src/ease-theme.vala b/src/ease-theme.vala
index c4dda8e..5c40a2f 100644
--- a/src/ease-theme.vala
+++ b/src/ease-theme.vala
@@ -221,10 +221,10 @@ public class Ease.Theme : GLib.Object
 	 *
 	 * @param copy_to The path to copy the Theme to.
 	 */
-	public Theme copy_to_path(string copy_to)
+	public Theme copy_to_path(string copy_to) throws Error
 	{
 		// copy data files
-		Posix.system("cp -r %s %s".printf(path, copy_to));
+		recursive_copy(path, copy_to);
 		
 		// create a copy of this theme and change its path
 		var theme = new Theme.copy(this);
@@ -289,10 +289,11 @@ public class Ease.Theme : GLib.Object
 	{
 		var origin_path = Path.build_filename(path, MEDIA_PATH);
 		
+		if (!File.new_for_path(origin_path).query_exists(null)) return;
+		
 		var target_path = Path.build_filename(target, MEDIA_PATH);
 		
-		// TODO: non-system implementation of recursive copy
-		Posix.system("cp -r %s %s".printf(origin_path, target_path));
+		recursive_copy(origin_path, target_path);
 	}
 	
 	/**
diff --git a/src/ease-utilities.vala b/src/ease-utilities.vala
index a7954db..18995f0 100644
--- a/src/ease-utilities.vala
+++ b/src/ease-utilities.vala
@@ -189,14 +189,15 @@ namespace Ease
 		}
 	}
 	
-	public delegate void RecursiveDirAction(string path, string full_path);
+	public delegate void RecursiveDirAction(string path, string full_path)
+	                                       throws GLib.Error;
 	
 	/**
 	 * Recursively removes a directory.
 	 *
 	 * @param path The directory to be recursively deleted.
 	 */
-	public static void recursive_delete(string path) throws GLib.Error
+	public void recursive_delete(string path) throws GLib.Error
 	{
 		var dir = GLib.Dir.open(path, 0);
 		
@@ -216,6 +217,32 @@ namespace Ease
 		
 		DirUtils.remove(path);	
 	}
+	
+	/**
+	 * Recursive copies a directory.
+	 *
+	 * @param from_dir The directory to copy from.
+	 * @param to_dir The directory to copy to.
+	 */
+	public void recursive_copy(string from_dir, string to_dir) throws GLib.Error
+	{
+		var top = File.new_for_path(to_dir);
+		if (!top.query_exists(null))
+		{
+			top.make_directory_with_parents(null);
+		}
+		
+		recursive_directory(from_dir,
+			(path, full_path) => {
+				var dir = File.new_for_path(Path.build_filename(to_dir, path));
+				if (!dir.query_exists(null)) dir.make_directory(null);
+			},
+			(path, full_path) => {
+				var from = File.new_for_path(full_path);
+				var to = File.new_for_path(Path.build_filename(to_dir, path));
+				from.copy(to, FileCopyFlags.OVERWRITE, null, null);
+			});
+	}
 
 	public double dmax(double a, double b)
 	{