using System; using System.Collections.Generic; using System.IO; using System.Linq; using System.Text; using System.Text.Json; namespace ChromeCoverageProcessor { public class CoverageData { public string Url { get; set; } public List Ranges { get; set; } public string Text { get; set; } } public class Range { public int Start { get; set; } public int End { get; set; } } public static class ChromeCoverageProcessor { public static void ProcessCoverageFile(string inputFilePath, string outputDirectory) { if (!File.Exists(inputFilePath)) { throw new FileNotFoundException("Input coverage file not found", inputFilePath); } Directory.CreateDirectory(outputDirectory); var coverageData = JsonSerializer.Deserialize>(File.ReadAllText(inputFilePath)); foreach (var entry in coverageData) { if (entry.Ranges == null || entry.Text == null) continue; var fileName = GetSafeFileName(entry.Url); var filePath = Path.Combine(outputDirectory, fileName); var usedCode = ExtractUsedCode(entry.Text, entry.Ranges); File.WriteAllText(filePath, usedCode); } } private static string ExtractUsedCode(string fullText, List ranges) { var sortedRanges = ranges.OrderBy(r => r.Start).ToList(); var result = new StringBuilder(); int currentPosition = 0; foreach (var range in sortedRanges) { // Check if this range is within a media query var mediaQuery = FindEnclosingMediaQuery(fullText, range.Start, range.End); if (mediaQuery != null) { // If we're not already inside this media query, add it to the result if (!result.ToString().Contains(mediaQuery)) { result.AppendLine(mediaQuery); result.AppendLine("{"); } } if (range.Start > currentPosition) { result.Append(fullText.Substring(currentPosition, range.Start - currentPosition)); } if (range.End > range.Start) { result.Append(fullText.Substring(range.Start, range.End - range.Start)); } currentPosition = range.End; if (mediaQuery != null) { result.AppendLine(); result.AppendLine("}"); } } if (currentPosition < fullText.Length) { result.Append(fullText.Substring(currentPosition)); } return result.ToString(); } private static string FindEnclosingMediaQuery(string text, int start, int end) { int mediaStart = text.LastIndexOf("@media", start); if (mediaStart == -1) return null; int braceCount = 0; int mediaEnd = -1; bool inMediaBlock = false; for (int i = mediaStart; i < text.Length; i++) { if (text[i] == '{') { braceCount++; inMediaBlock = true; } else if (text[i] == '}') { braceCount--; if (inMediaBlock && braceCount == 0) { mediaEnd = i; break; } } } if (mediaEnd == -1) return null; // Check if our range is within this media query if (start >= mediaStart && end <= mediaEnd) { return text.Substring(mediaStart, text.IndexOf('{', mediaStart) - mediaStart + 1).Trim(); } return null; } private static string GetSafeFileName(string url) { var invalidChars = Path.GetInvalidFileNameChars(); var fileName = new string(url.Select(c => invalidChars.Contains(c) ? '_' : c).ToArray()); return fileName.Length > 100 ? fileName.Substring(0, 100) + ".css" : fileName + ".css"; } } } using System; namespace ChromeCoverageProcessor { class Program { static void Main(string[] args) { if (args.Length < 2) { Console.WriteLine("Usage: ChromeCoverageProcessor

"); return; } try { ChromeCoverageProcessor.ProcessCoverageFile(args[0], args[1]); Console.WriteLine($"Successfully processed coverage file. Output saved to: {args[1]}"); } catch (Exception ex) { Console.WriteLine($"Error processing coverage file: {ex.Message}"); } } } }