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, 25 insertions, 29 deletions

diff --git a/Source/SPDotExporter.h b/Source/SPDotExporter.h
index 40954782..d54aa05b 100644
--- a/Source/SPDotExporter.h
+++ b/Source/SPDotExporter.h
@@ -37,58 +37,54 @@
  */
 @interface SPDotExporter : SPExporter 
 {
-	/**
-	 * Exporter delegate
-	 */
 	NSObject <SPDotExporterProtocol> *delegate;
 	
-	/**
-	 * Table information
-	 */
 	NSArray *dotExportTables;
 	
-	/**
-	 * Current table
-	 */
 	NSString *dotExportCurrentTable;
 	
-	/**
-	 * Table data
-	 */
 	SPTableData *dotTableData;
 	
-	/**
-	 * Database host
-	 */
 	NSString *dotDatabaseHost;
-	
-	/**
-	 * Database name
-	 */
 	NSString *dotDatabaseName;
-	
-	/**
-	 * Database version
-	 */
 	NSString *dotDatabaseVersion;
 }
 
+/**
+ * @property delegate Exporter delegate
+ */
 @property(readwrite, assign) NSObject *delegate;
+
+/**
+ * @property dotExportTables Table information
+ */
 @property(readwrite, retain) NSArray *dotExportTables;
+
+/**
+ * @property dotExportCurrentTable Current table
+ */
 @property(readwrite, retain) NSString *dotExportCurrentTable;
+
+/**
+ * @property dotTableData Table data
+ */
 @property(readwrite, retain) SPTableData *dotTableData;
 
+/**
+ * @property dotDatabaseHost Database host
+ */
 @property(readwrite, retain) NSString *dotDatabaseHost;
+
+/**
+ * @property dotDatabaseName Database name
+ */
 @property(readwrite, retain) NSString *dotDatabaseName;
-@property(readwrite, retain) NSString *dotDatabaseVersion;
 
 /**
- * Initialise an instance of SPDotExporter using the supplied delegate.
- *
- * @param exportDelegate The exporter delegate
- *
- * @return The initialised instance
+ * @property dotDatabaseVersion Database version
  */
+@property(readwrite, retain) NSString *dotDatabaseVersion;
+
 - (id)initWithDelegate:(NSObject *)exportDelegate;
 
 @end