feat: QLOPML extension

2025-07-23 12:31:40 +02:00
parent ba76f6a206
commit 20835cd155
9 changed files with 420 additions and 2 deletions
--- a/QLOPML/Base.lproj/PreviewViewController.xib
+++ b/QLOPML/Base.lproj/PreviewViewController.xib
@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<document type="com.apple.InterfaceBuilder3.Cocoa.XIB" version="3.0" toolsVersion="11762" targetRuntime="MacOSX.Cocoa" propertyAccessControl="none" useAutolayout="YES" customObjectInstantitationMethod="direct">
+    <dependencies>
+        <deployment identifier="macosx"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.CocoaPlugin" version="11762"/>
+        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
+    </dependencies>
+    <objects>
+        <customObject id="-2" userLabel="File's Owner" customClass="PreviewViewController" customModuleProvider="">
+            <connections>
+                <outlet property="view" destination="c22-O7-iKe" id="NRM-P4-wb6"/>
+            </connections>
+        </customObject>
+        <customObject id="-1" userLabel="First Responder" customClass="FirstResponder"/>
+        <customObject id="-3" userLabel="Application" customClass="NSObject"/>
+        <customView id="c22-O7-iKe" userLabel="Preview View">
+            <rect key="frame" x="0.0" y="0.0" width="480" height="272"/>
+            <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
+        </customView>
+    </objects>
+</document>
--- a/QLOPML/Info.plist
+++ b/QLOPML/Info.plist
@@ -0,0 +1,44 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>$(DEVELOPMENT_LANGUAGE)</string>
+	<key>CFBundleDisplayName</key>
+	<string>QLOPML</string>
+	<key>CFBundleExecutable</key>
+	<string>$(EXECUTABLE_NAME)</string>
+	<key>CFBundleIdentifier</key>
+	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>$(PRODUCT_NAME)</string>
+	<key>CFBundlePackageType</key>
+	<string>$(PRODUCT_BUNDLE_PACKAGE_TYPE)</string>
+	<key>CFBundleShortVersionString</key>
+	<string>$(MARKETING_VERSION)</string>
+	<key>CFBundleVersion</key>
+	<string>$(CURRENT_PROJECT_VERSION)</string>
+	<key>LSMinimumSystemVersion</key>
+	<string>$(MACOSX_DEPLOYMENT_TARGET)</string>
+	<key>NSExtension</key>
+	<dict>
+		<key>NSExtensionAttributes</key>
+		<dict>
+			<key>QLSupportedContentTypes</key>
+			<array>
+				<string>org.opml.opml</string>
+			</array>
+			<key>QLSupportsSearchableItems</key>
+			<false/>
+		</dict>
+		<key>NSExtensionPointIdentifier</key>
+		<string>com.apple.quicklook.preview</string>
+		<key>NSExtensionPrincipalClass</key>
+		<string>PreviewViewController</string>
+	</dict>
+	<key>NSHumanReadableCopyright</key>
+	<string>Copyright © 2025 relikd.</string>
+</dict>
+</plist>
--- a/QLOPML/PreviewViewController.h
+++ b/QLOPML/PreviewViewController.h
@@ -0,0 +1,5 @@
+#import <Cocoa/Cocoa.h>
+
+@interface PreviewViewController : NSViewController
+
+@end
--- a/QLOPML/PreviewViewController.m
+++ b/QLOPML/PreviewViewController.m
@@ -0,0 +1,27 @@
+#import "PreviewViewController.h"
+#import <Quartz/Quartz.h>
+#import <WebKit/WebKit.h>
+#include "opml-lib.h"
+
+@interface PreviewViewController () <QLPreviewingController>
+@end
+
+@implementation PreviewViewController
+
+- (NSString *)nibName {
+	return @"PreviewViewController";
+}
+
+- (void)preparePreviewOfFileAtURL:(NSURL *)url completionHandler:(void (^)(NSError * _Nullable))handler {
+	NSData *data = generateHTMLData(url, [NSBundle mainBundle], NO);
+	// sure, we could use `WKWebView`, but that requires the `com.apple.security.network.client` entitlement
+	WebView *web = [[WebView alloc] initWithFrame:self.view.bounds];
+	web.autoresizingMask = NSViewWidthSizable | NSViewHeightSizable;
+	[self.view addSubview:web];
+//	[web.mainFrame loadHTMLString:html baseURL:nil];
+	[web.mainFrame loadData:data MIMEType:@"text/html" textEncodingName:@"UTF-8" baseURL:nil];
+	handler(nil);
+}
+
+@end
+
--- a/QLOPML/QLOPML.entitlements
+++ b/QLOPML/QLOPML.entitlements
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+    <key>com.apple.security.app-sandbox</key>
+    <true/>
+    <key>com.apple.security.files.user-selected.read-only</key>
+    <true/>
+</dict>
+</plist>
--- a/QLOPML/opml-lib.h
+++ b/QLOPML/opml-lib.h
@@ -0,0 +1,7 @@
+#ifndef opml_lib_h
+#define opml_lib_h
+
+NSData* generateHTMLData(NSURL *url, NSBundle *bundle, BOOL thumb);
+//void renderThumbnail(CFURLRef url, CFBundleRef bundle, CGContextRef context, CGSize maxSize);
+
+#endif /* opml_lib_h */
--- a/QLOPML/opml-lib.m
+++ b/QLOPML/opml-lib.m
@@ -0,0 +1,116 @@
+#import <Foundation/Foundation.h>
+#import <AppKit/AppKit.h>
+//#import <WebKit/WebKit.h>
+
+//  ---------------------------------------------------------------
+// |
+// |  OPML renderer
+// |
+//  ---------------------------------------------------------------
+
+NSXMLElement* make(NSString *tag, NSString *text, NSXMLElement *parent) {
+	NSXMLElement *div = [NSXMLElement elementWithName:tag];
+	if (text) div.stringValue = text;
+	[parent addChild:div];
+	return div;
+}
+
+void attribute(NSXMLElement *parent, NSString *key, NSString *value) {
+	[parent addAttribute:[NSXMLElement attributeWithName:key stringValue:value]];
+}
+
+NSXMLElement* section(NSString *title, NSString *container, NSXMLElement *parent) {
+	make(@"h3", title, parent);
+	NSXMLElement *div = make(container, nil, parent);
+	attribute(div, @"class", @"section");
+	return div;
+}
+
+void appendNode(NSXMLElement *child, NSXMLElement *parent, Boolean thumb) {
+	
+	if ([child.name isEqualToString:@"head"]) {
+		if (thumb)
+			return;
+		NSXMLElement *dl = section(@"Metadata:", @"dl", parent);
+		for (NSXMLElement *head in child.children) {
+			make(@"dt", head.name, dl);
+			make(@"dd", head.stringValue, dl);
+		}
+		return;
+	}
+	
+	if ([child.name isEqualToString:@"body"]) {
+		parent = thumb ? make(@"ul", nil, parent) : section(@"Content:", @"ul", parent);
+		
+	} else if ([child.name isEqualToString:@"outline"]) {
+		if ([child attributeForName:@"separator"].stringValue) {
+			make(@"hr", nil, parent);
+		} else {
+			NSString *desc = [child attributeForName:@"title"].stringValue;
+			if (!desc || desc.length == 0)
+				desc = [child attributeForName:@"text"].stringValue;
+			// refreshInterval
+			NSXMLElement *li = make(@"li", desc, parent);
+			if (!thumb) {
+				NSString *xmlUrl = [child attributeForName:@"xmlUrl"].stringValue;
+				if (xmlUrl && xmlUrl.length > 0) {
+					[li addChild:[NSXMLNode textWithStringValue:@" — "]];
+					attribute(make(@"a", xmlUrl, li), @"href", xmlUrl);
+				}
+			}
+		}
+		if (child.childCount > 0) {
+			parent = make(@"ul", nil, parent);
+		}
+	}
+	for (NSXMLElement *c in child.children) {
+		appendNode(c, parent, thumb);
+	}
+}
+
+NSData* generateHTMLData(NSURL *url, NSBundle *bundle, BOOL thumb) {
+	NSError *err;
+	NSXMLDocument *doc = [[NSXMLDocument alloc] initWithContentsOfURL:url options:0 error:&err];
+	if (err || !doc) {
+		printf("ERROR: %s\n", err.description.UTF8String);
+		return nil;
+	}
+	
+	NSXMLElement *html = [NSXMLElement elementWithName:@"html"];
+	NSXMLElement *head = make(@"head", nil, html);
+	make(@"title", @"OPML file", head);
+	
+	NSString *cssPath = [bundle pathForResource:thumb ? @"style-thumb" : @"style" ofType:@"css"];
+	NSString *data = [NSString stringWithContentsOfFile:cssPath encoding:NSUTF8StringEncoding error:nil];
+	make(@"style", data, head);
+	
+	NSXMLElement *body = make(@"body", nil, html);
+	
+	for (NSXMLElement *child in doc.children) {
+		appendNode(child, body, thumb);
+	}
+	NSXMLDocument *xml = [NSXMLDocument documentWithRootElement:html];
+	return [xml XMLDataWithOptions:NSXMLNodePrettyPrint | NSXMLNodeCompactEmptyElement];
+}
+
+
+/*void renderThumbnail(CFURLRef url, CFBundleRef bundle, CGContextRef context, CGSize maxSize) {
+	NSData *data = generateHTMLData((__bridge NSURL*)url, bundle, true);
+	if (data) {
+		CGRect rect = CGRectMake(0, 0, 600, 800);
+		float scale = maxSize.height / rect.size.height;
+		
+		WebView *webView = [[WebView alloc] initWithFrame:rect];
+		[webView.mainFrame.frameView scaleUnitSquareToSize:CGSizeMake(scale, scale)];
+		[webView.mainFrame.frameView setAllowsScrolling:NO];
+		[webView.mainFrame loadData:data MIMEType:@"text/html" textEncodingName:@"utf-8" baseURL:nil];
+		
+		while ([webView isLoading])
+		  CFRunLoopRunInMode(kCFRunLoopDefaultMode, 0, true);
+		[webView display];
+		
+		NSGraphicsContext *gc = [NSGraphicsContext graphicsContextWithGraphicsPort:(void *)context
+																		   flipped:webView.isFlipped];
+		[webView displayRectIgnoringOpacity:webView.bounds inContext:gc];
+	}
+}*/
--- a/QLOPML/style.css
+++ b/QLOPML/style.css
@@ -0,0 +1,12 @@
+
+* { font-family: Courier; }
+body { padding: 30px; background-color: #AAA; color: black; }
+dd, li, hr { font-weight: bold; line-height: 1.5em; }
+ul { list-style-type: none; padding-bottom: 1em; }
+a { font-size: 0.75em; color: #FBA43A; }
+.section { padding: 1em 1.5em; border-radius: 7px; background-color: #EEE; }
+
+@media (prefers-color-scheme: dark) {
+body { background-color: #555; color: white; }
+.section { background-color: #222; }
+}