Various export enhancements and fixes, including:

- A new SPExportFile class, providing an abstract interface to the handling and creation of export files.
- Enables the centralisation of all file/file handle creation logic as well as better support for handling situations where files fail to be created, including files that already exist at the export location.
- New SPExportFileHandleStatus constants to support the reporting of file handle creation.
- Update SPExporter to use the new file class instead of directly using an instance of SPFileHandle.
- Add the necessary logic to deal with files that already exist on disk, by providing the user with 3 options: cancel the export, ignore the files in question or overwrite them. We might want to enhance this to make new files sequential in name to prevent overwriting. Fixes issue #742.
- New SPExportFileUtilities category, which centralises all the logic relating to writing export type headers as well as dealing with problems occurred during file/file handle creation.
- Improve feedback given on the export progress sheet during export initialisation.
- Tidy up and improve comments.

1 files changed, 7 insertions, 0 deletions

diff --git a/Source/SPExportUtilities.h b/Source/SPExportUtilities.h
index 2c7c1e09..dfb81f54 100644
--- a/Source/SPExportUtilities.h
+++ b/Source/SPExportUtilities.h
@@ -23,6 +23,13 @@
 //
 //  More info at <http://code.google.com/p/sequel-pro/>
 
+/**
+ * @class SPExportUtilities SPExportUtilities.h
+ *
+ * @author Stuart Connolly http://stuconnolly.com/
+ *
+ * Export utility methods.
+ */
 @interface SPExportUtilities : NSObject 
 
 void SPExportDelegateConformsToProtocol(NSObject *delegate, Protocol *protocol);