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, 3 insertions, 3 deletions

diff --git a/Source/SPCSVExporterDelegate.m b/Source/SPCSVExporterDelegate.m
index 4da82285..6a0127c3 100644
--- a/Source/SPCSVExporterDelegate.m
+++ b/Source/SPCSVExporterDelegate.m
@@ -73,7 +73,7 @@
 			
 			// If we're exporting multiple tables to a single file then append some space and the next table's
 			// name, but only if there is at least 2 exportes left.
-			[[exporter exportOutputFileHandle] writeData:[[NSString stringWithFormat:@"%@%@%@ %@%@%@", 
+			[[exporter exportOutputFile] writeData:[[NSString stringWithFormat:@"%@%@%@ %@%@%@", 
 														   [exporter csvLineEndingString], 
 														   [exporter csvLineEndingString],
 														   NSLocalizedString(@"Table", @"csv export table heading"),
@@ -84,7 +84,7 @@
 		// Otherwise close the file handle of the exporter that just finished 
 		// ensuring it's data is written to disk.
 		else {
-			[[exporter exportOutputFileHandle] closeFile];
+			[[exporter exportOutputFile] close];
 		}
 		
 		[operationQueue addOperation:[exporters objectAtIndex:0]];
@@ -96,7 +96,7 @@
 	// Otherwise if the exporter list is empty, close the progress sheet
 	else {
 		// Close the last exporter's file handle
-		[[exporter exportOutputFileHandle] closeFile];
+		[[exporter exportOutputFile] close];
 		
 		[NSApp endSheet:exportProgressWindow returnCode:0];
 		[exportProgressWindow orderOut:self];