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76 lines
2.1 KiB
76 lines
2.1 KiB
#include <CoreFoundation/CoreFoundation.h>
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#include <CoreServices/CoreServices.h>
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#include <QuickLook/QuickLook.h>
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#import <Cocoa/Cocoa.h>
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OSStatus GeneratePreviewForURL(void *thisInterface, QLPreviewRequestRef preview,
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CFURLRef url, CFStringRef contentTypeUTI, CFDictionaryRef options);
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void CancelPreviewGeneration(void *thisInterface, QLPreviewRequestRef preview);
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//' This does the hard work
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OSStatus GeneratePreviewForURL(void *thisInterface, QLPreviewRequestRef preview,
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CFURLRef url, CFStringRef contentTypeUTI, CFDictionaryRef options) {
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@autoreleasepool {
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NSURL *myURL = (__bridge NSURL *)url ;
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NSString *ext = [ [ myURL pathExtension ] lowercaseString ];
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NSString *contents = [ myURL absoluteString ] ;
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NSLog(@"Generating preview for %@", contents) ;
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if ([ ext isEqualToString: @"rmd" ]) {
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QLPreviewRequestSetURLRepresentation(
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preview,
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url,
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kUTTypePlainText,
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NULL
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);
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return noErr;
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} else {
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NSPipe *pipe = [ NSPipe pipe ] ;
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NSFileHandle *file = pipe.fileHandleForReading ;
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NSString *cmd = @"rdatainfo::get_info('" ;
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cmd = [ cmd stringByAppendingString: contents ] ;
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cmd = [ cmd stringByAppendingString: @"')" ] ;
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NSLog(@"Running: %@", cmd) ;
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NSTask *task = [ [ NSTask alloc ] init] ;
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task.launchPath = @"/usr/local/bin/Rscript";
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task.arguments = @[ @"-e", cmd ];
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task.standardOutput = pipe;
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[task launch];
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NSData *data = [ file readDataToEndOfFile ] ;
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[ file closeFile ];
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NSString *rOutput = [ [ NSString alloc ] initWithData: data encoding: NSUTF8StringEncoding ] ;
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if (false == QLPreviewRequestIsCancelled(preview)) {
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QLPreviewRequestSetDataRepresentation(
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preview,
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(__bridge CFDataRef)([ rOutput dataUsingEncoding:NSUTF8StringEncoding ]),
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kUTTypePlainText, NULL
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) ;
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}
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}
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}
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return noErr;
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}
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void CancelPreviewGeneration(void *thisInterface, QLPreviewRequestRef preview) { }
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