[TIMOB-8626] iOS: Filesystem - TiBlob image Mimetype not correctly set when extension not lowercase

Problem

When reading a file using Ti.Filesystem.getFile(), followed by file.read(), the resultant TiBlob object will not be initialized as an image if the filename has a non-lowercase extension (e.g. image.JPG). Therefore, no image functions are usable (width, height, resize etc).

Test case

Insert your test case here

Logs

Insert any output or errors here

Proposed Solution

In Mimetypes.m, perform a lowercase conversion for the extension. However, I am not certain if there is a reason to keep case sensitivity for MIME type extensions.

+ (NSString *)mimeTypeForExtension:(NSString *)ext
{
	[Mimetypes initialize];
	NSString *result=[mimeTypeFromExtensionDict objectForKey:[[ext pathExtension] lowercaseString]];
	if (result == nil){
		result = @"application/octet-stream";
	}
	return result;
}