WebPDFRepresentation no longer supports the "application/postscript" …

…MIME type

https://bugs.webkit.org/show_bug.cgi?id=273859
rdar://127706401

Reviewed by Tim Horton.

WebKit no longer has access to the PostScript conversion service. In
fact, the PSNormalizer framework (required for conversion) is not even
available in macOS Sonoma (and onwards). As such, it is safe for us to
remove the PostScript to PDF transcoding logic in -[WebPDFRepresentation
convertPostScriptDataSourceToPDF:].

With that, we can also drop "application/postscript" as a supported MIME
type in WebPDFRepresentation. We take the liberty to do so in this patch.

* Source/WebKitLegacy/mac/WebView/WebPDFRepresentation.mm:
(+[WebPDFRepresentation supportedMIMETypes]):
(-[WebPDFRepresentation finishedLoadingWithDataSource:]):
(+[WebPDFRepresentation postScriptMIMETypes]): Deleted.
(-[WebPDFRepresentation convertPostScriptDataSourceToPDF:]): Deleted.

Canonical link: https://commits.webkit.org/278515@main

Source/WebKitLegacy/mac/WebView/WebPDFRepresentation.mm

@@ -42,21 +42,9 @@
 
 @implementation WebPDFRepresentation
 
-+ (NSArray *)postScriptMIMETypes
-{
-    return @[
-        @"application/postscript",
-    ];
-}
-
 + (NSArray *)supportedMIMETypes
 {
-    return [[[self class] postScriptMIMETypes] arrayByAddingObjectsFromArray:
-        @[
-            @"text/pdf",
-            @"application/pdf",
-        ]
-    ];
+    return @[ @"text/pdf", @"application/pdf" ];
 }
 
 + (Class)PDFDocumentClass
@@ -83,44 +71,10 @@ - (void)receivedError:(NSError *)error withDataSource:(WebDataSource *)dataSourc
 {
 }
 
-- (NSData *)convertPostScriptDataSourceToPDF:(NSData *)data
-{
-    // Convert PostScript to PDF using Quartz 2D API
-    // http://developer.apple.com/documentation/GraphicsImaging/Conceptual/drawingwithquartz2d/dq_ps_convert/chapter_16_section_1.html
-
-    CGPSConverterCallbacks callbacks = { 0, 0, 0, 0, 0, 0, 0, 0 };    
-    RetainPtr<CGPSConverterRef> converter = adoptCF(CGPSConverterCreate(0, &callbacks, 0));
-    ASSERT(converter.get());
-
-    RetainPtr<CGDataProviderRef> provider = adoptCF(CGDataProviderCreateWithCFData((CFDataRef)data));
-    ASSERT(provider.get());
-
-    RetainPtr<CFMutableDataRef> result = adoptCF(CFDataCreateMutable(kCFAllocatorDefault, 0));
-    ASSERT(result.get());
-
-    RetainPtr<CGDataConsumerRef> consumer = adoptCF(CGDataConsumerCreateWithCFData(result.get()));
-    ASSERT(consumer.get());
-
-    // Error handled by detecting zero-length 'result' in caller
-    CGPSConverterConvert(converter.get(), provider.get(), consumer.get(), 0);
-
-    return result.bridgingAutorelease();
-}
-
 - (void)finishedLoadingWithDataSource:(WebDataSource *)dataSource
 {
-    NSData *data = [dataSource data];
-
-    NSArray *postScriptMIMETypes = [[self class] postScriptMIMETypes];
-    NSString *mimeType = [dataSource _responseMIMEType];
-    if ([postScriptMIMETypes containsObject:mimeType]) {
-        data = [self convertPostScriptDataSourceToPDF:data];
-        if ([data length] == 0)
-            return;
-    }
-
     WebPDFView *view = (WebPDFView *)[[[dataSource webFrame] frameView] documentView];
-    auto document = adoptNS([[[[self class] PDFDocumentClass] alloc] initWithData:data]);
+    auto document = adoptNS([[[[self class] PDFDocumentClass] alloc] initWithData:[dataSource data]]);
     [view setPDFDocument:document.get()];
 
     NSArray *scripts = allScriptsInPDFDocument(document.get());