Minify JS and CSS files
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a69da0fa35
commit
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@ -14,7 +14,17 @@ extension URL {
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}
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}
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var isDirectory: Bool {
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var isDirectory: Bool {
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(try? resourceValues(forKeys: [.isDirectoryKey]))?.isDirectory == true
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do {
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let resources = try resourceValues(forKeys: [.isDirectoryKey])
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guard let isDirectory = resources.isDirectory else {
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print("No isDirectory info for \(path)")
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return false
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}
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return isDirectory
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} catch {
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print("Failed to get directory information from \(path): \(error)")
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return false
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}
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}
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}
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var exists: Bool {
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var exists: Bool {
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@ -3,4 +3,6 @@ import Foundation
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struct Configuration {
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struct Configuration {
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let pageImageWidth: Int
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let pageImageWidth: Int
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let minifyCSSandJS: Bool
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}
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}
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@ -7,6 +7,8 @@ typealias SourceTextFile = (content: String, didChange: Bool)
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final class FileSystem {
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final class FileSystem {
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private static let tempFileName = "temp.bin"
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private static let hashesFileName = "hashes.json"
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private static let hashesFileName = "hashes.json"
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private let input: URL
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private let input: URL
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@ -19,6 +21,10 @@ final class FileSystem {
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input.appendingPathComponent(FileSystem.hashesFileName)
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input.appendingPathComponent(FileSystem.hashesFileName)
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}
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}
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private var tempFile: URL {
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input.appendingPathComponent(FileSystem.tempFileName)
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}
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/**
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/**
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The hashes of all accessed files from the previous run
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The hashes of all accessed files from the previous run
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@ -357,7 +363,21 @@ final class FileSystem {
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Add a file as required, so that it will be copied to the output directory.
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Add a file as required, so that it will be copied to the output directory.
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*/
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*/
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func require(file: String) {
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func require(file: String) {
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let url = input.appendingPathComponent(file)
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guard url.exists, url.isDirectory else {
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requiredFiles.insert(file)
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requiredFiles.insert(file)
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return
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}
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do {
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try FileManager.default
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.contentsOfDirectory(atPath: url.path)
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.forEach {
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// Recurse into subfolders
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require(file: file + "/" + $0)
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}
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} catch {
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log.add(error: "Failed to read folder \(file): \(error)", source: source)
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}
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}
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}
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/**
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/**
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@ -391,17 +411,11 @@ final class FileSystem {
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}
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}
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continue
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continue
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}
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}
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let data: Data
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if copyFileIfChanged(from: sourceUrl, to: destinationUrl) {
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do {
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data = try Data(contentsOf: sourceUrl)
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} catch {
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log.add(error: "Failed to read data at \(sourceUrl.path)", source: source, error: error)
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continue
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}
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if writeIfChanged(data, to: destinationUrl) {
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copiedFiles.insert(file)
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copiedFiles.insert(file)
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}
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}
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}
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}
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try? tempFile.delete()
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for (file, source) in expectedFiles {
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for (file, source) in expectedFiles {
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guard !isExternal(file: file) else {
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guard !isExternal(file: file) else {
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continue
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continue
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@ -422,6 +436,52 @@ final class FileSystem {
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}
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}
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}
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}
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private func copyFileIfChanged(from sourceUrl: URL, to destinationUrl: URL) -> Bool {
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guard configuration.minifyCSSandJS else {
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return copyBinaryFileIfChanged(from: sourceUrl, to: destinationUrl)
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}
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switch sourceUrl.pathExtension.lowercased() {
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case "js":
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return minifyJS(at: sourceUrl, andWriteTo: destinationUrl)
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case "css":
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return minifyCSS(at: sourceUrl, andWriteTo: destinationUrl)
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default:
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return copyBinaryFileIfChanged(from: sourceUrl, to: destinationUrl)
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}
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}
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private func copyBinaryFileIfChanged(from sourceUrl: URL, to destinationUrl: URL) -> Bool {
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do {
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let data = try Data(contentsOf: sourceUrl)
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return writeIfChanged(data, to: destinationUrl)
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} catch {
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log.add(error: "Failed to read data at \(sourceUrl.path)", source: source, error: error)
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return false
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}
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}
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private func minifyJS(at sourceUrl: URL, andWriteTo destinationUrl: URL) -> Bool {
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let command = "uglifyjs \(sourceUrl.path) > \(tempFile.path)"
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do {
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_ = try safeShell(command)
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return copyBinaryFileIfChanged(from: tempFile, to: destinationUrl)
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} catch {
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log.add(error: "Failed to minify \(sourceUrl.path): \(error)", source: source)
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return false
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}
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}
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private func minifyCSS(at sourceUrl: URL, andWriteTo destinationUrl: URL) -> Bool {
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let command = "cleancss \(sourceUrl.path) -o \(tempFile.path)"
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do {
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_ = try safeShell(command)
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return copyBinaryFileIfChanged(from: tempFile, to: destinationUrl)
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} catch {
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log.add(error: "Failed to minify \(sourceUrl.path): \(error)", source: source)
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return false
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}
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}
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private func cleanRelativeURL(_ raw: String) -> String {
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private func cleanRelativeURL(_ raw: String) -> String {
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let raw = raw.dropAfterLast("#") // Clean links to page content
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let raw = raw.dropAfterLast("#") // Clean links to page content
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guard raw.contains("..") else {
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guard raw.contains("..") else {
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@ -468,7 +528,7 @@ final class FileSystem {
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guard !externalFiles.isEmpty else {
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guard !externalFiles.isEmpty else {
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return
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return
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}
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}
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print("\(externalFiles.count) external files needed:")
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print("\(externalFiles.count) external resources needed:")
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for file in externalFiles.sorted() {
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for file in externalFiles.sorted() {
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print(" " + file)
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print(" " + file)
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}
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}
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@ -553,6 +613,27 @@ final class FileSystem {
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let data = string.data(using: .utf8)!
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let data = string.data(using: .utf8)!
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return writeIfChanged(data, to: url)
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return writeIfChanged(data, to: url)
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}
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}
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// MARK: Running other tasks
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@discardableResult
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func safeShell(_ command: String) throws -> String {
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let task = Process()
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let pipe = Pipe()
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task.standardOutput = pipe
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task.standardError = pipe
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task.arguments = ["-cl", command]
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task.executableURL = URL(fileURLWithPath: "/bin/zsh")
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task.standardInput = nil
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try task.run()
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let data = pipe.fileHandleForReading.readDataToEndOfFile()
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let output = String(data: data, encoding: .utf8)!
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return output
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}
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}
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}
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private extension Digest {
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private extension Digest {
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@ -3,7 +3,9 @@ import Foundation
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private let contentDirectory = URL(fileURLWithPath: "/Users/ch/Projects/MakerSpace")
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private let contentDirectory = URL(fileURLWithPath: "/Users/ch/Projects/MakerSpace")
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private let outputDirectory = URL(fileURLWithPath: "/Users/ch/Projects/MakerSpace/Site")
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private let outputDirectory = URL(fileURLWithPath: "/Users/ch/Projects/MakerSpace/Site")
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let configuration = Configuration(pageImageWidth: 748)
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let configuration = Configuration(
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pageImageWidth: 748,
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minifyCSSandJS: true)
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let log = ValidationLog()
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let log = ValidationLog()
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let files = FileSystem(in: contentDirectory, to: outputDirectory)
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let files = FileSystem(in: contentDirectory, to: outputDirectory)
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