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, 6 insertions, 2 deletions

diff --git a/Source/SPCSVExporter.m b/Source/SPCSVExporter.m
index 40feadf9..cb0249ef 100644
--- a/Source/SPCSVExporter.m
+++ b/Source/SPCSVExporter.m
@@ -47,6 +47,10 @@
 
 /**
  * Initialise an instance of SPCSVExporter using the supplied delegate.
+ *
+ * @param exportDelegate The exporter delegate
+ *
+ * @return The initialised instance
  */
 - (id)initWithDelegate:(NSObject *)exportDelegate
 {
@@ -361,7 +365,7 @@
 		currentPoolDataLength += [csvString length];
 		
 		// Write it to the fileHandle
-		[[self exportOutputFileHandle] writeData:[csvString dataUsingEncoding:[self exportOutputEncoding]]];
+		[[self exportOutputFile] writeData:[csvString dataUsingEncoding:[self exportOutputEncoding]]];
 		
 		currentRowIndex++;
 		
@@ -389,7 +393,7 @@
 	}
 	
 	// Write data to disk
-	[[self exportOutputFileHandle] synchronizeFile];
+	[[[self exportOutputFile] exportFileHandle] synchronizeFile];
 	
 	// Mark the process as not running
 	[self setExportProcessIsRunning:NO];