Add Konverter: a local-only menu bar file converter

Drag files in Finder, hold a modifier, and drop on a wheel of outputs. Conversions run entirely on-device through ImageIO, PDFKit, AVFoundation, the bundled CLI tools, and optional ffmpeg/LibreOffice. Includes a --self-test suite (41 checks) and a --convert CLI mode so the conversion matrix can be verified without the UI.
2026-10-20 00:36:40 +08:00
commit 2d031e58a4
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+import Foundation
+
+/// Optional external helpers. Konverter works without them — they only widen
+/// the conversion matrix (formats Apple's frameworks cannot write) and are
+/// detected once at launch.
+enum Toolchain {
+    private static let homebrewPaths = ["/opt/homebrew/bin", "/usr/local/bin"]
+
+    /// ffmpeg/ffprobe: MKV, WebM, AVI, WMV, MP3, FLAC, OGG, Opus, WMA.
+    static let ffmpeg: String? = Shell.find("ffmpeg", extraPaths: homebrewPaths)
+    static let ffprobe: String? = Shell.find("ffprobe", extraPaths: homebrewPaths)
+
+    /// LibreOffice: PPT/PPTX rendering, XLS/XLSX/ODS, PAGES, Keynote.
+    static let soffice: String? = {
+        let candidates = [
+            "/Applications/LibreOffice.app/Contents/MacOS/soffice",
+            "/Applications/LibreOffice.app/Contents/MacOS/soffice.bin"
+        ]
+        for candidate in candidates where FileManager.default.isExecutableFile(atPath: candidate) {
+            return candidate
+        }
+        return Shell.find("soffice", extraPaths: homebrewPaths)
+    }()
+
+    static var hasFFmpeg: Bool { ffmpeg != nil }
+    static var hasLibreOffice: Bool { soffice != nil }
+
+    /// `curl`-free, sandbox-free best-effort image rasteriser for SVG and other
+    /// formats ImageIO refuses to decode but Quick Look understands.
+    static let qlmanage: String? = Shell.find("qlmanage", extraPaths: ["/usr/bin"])
+
+    static let ditto = "/usr/bin/ditto"
+    static let tar = "/usr/bin/tar"
+    static let gzip = "/usr/bin/gzip"
+    static let gunzip = "/usr/bin/gunzip"
+    static let textutil = "/usr/bin/textutil"
+    static let afconvert = "/usr/bin/afconvert"
+    static let zip = "/usr/bin/zip"
+    static let unzip = "/usr/bin/unzip"
+
+    /// Human readable summary for the About/Settings pane.
+    static var summary: String {
+        var parts: [String] = ["Core (ImageIO, PDFKit, AVFoundation)"]
+        if hasFFmpeg { parts.append("ffmpeg") }
+        if hasLibreOffice { parts.append("LibreOffice") }
+        return parts.joined(separator: " · ")
+    }
+
+    static var missingToolAdvice: String? {
+        var advice: [String] = []
+        if !hasFFmpeg { advice.append("brew install ffmpeg") }
+        if !hasLibreOffice { advice.append("brew install --cask libreoffice") }
+        return advice.isEmpty ? nil : advice.joined(separator: "  ·  ")
+    }
+}