Bilibili-Evolved/builder/dotnet/ResourceBuilder.cs
2018-11-01 16:16:59 +08:00

242 lines
8.6 KiB
C#

using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading.Tasks;
namespace BilibiliEvolved.Build
{
partial class ProjectBuilder
{
public ProjectBuilder BuildResources()
{
new CssMinifier().Build(this);
new HtmlMinifier().Build(this);
new JavascriptMinifier().Build(this);
return this;
}
}
abstract class ResourceMinifier
{
public abstract Predicate<FileInfo> FileFilter { get; }
public abstract string ResouceType { get; }
public abstract string Minify(string input);
protected string GetMinifiedFileName(string path)
{
var fileInfo = new FileInfo(path);
return "min/" + fileInfo.Name.Insert(fileInfo.Name.LastIndexOf("."), ".min");
}
protected IEnumerable<string> GetFiles(Predicate<FileInfo> filter)
{
string getRelativePath(string fullPath)
{
var currentFolder = Environment.CurrentDirectory;
var path = fullPath.Replace(currentFolder, "");
if (path.StartsWith(Path.DirectorySeparatorChar))
{
return path.Remove(path.IndexOf(Path.DirectorySeparatorChar), 1);
}
else
{
return path;
}
}
IEnumerable<string> getFiles(Predicate<FileInfo> predicate, string path)
{
var list = new List<string>();
var currentDirectory = new DirectoryInfo(path);
list.AddRange(currentDirectory.EnumerateFiles()
.Where(file => predicate(file))
.Select(file => getRelativePath(file.FullName)));
foreach (var subDir in currentDirectory.EnumerateDirectories())
{
list.AddRange(getFiles(filter, subDir.FullName));
}
return list;
}
var directory = Environment.CurrentDirectory;
if (!directory.EndsWith(Path.DirectorySeparatorChar))
{
directory = directory + Path.DirectorySeparatorChar;
}
return getFiles(filter, directory);
}
public virtual ProjectBuilder Build(ProjectBuilder builder)
{
var files = GetFiles(file =>
FileFilter(file)
&& !file.FullName.Contains(@".vs\")
&& !file.FullName.Contains(@".vscode\")
&& !file.FullName.Contains(@"build-scripts\")
&& !file.FullName.Contains(@"node_modules\")
);
using (var cache = new BuildCache())
{
var changedFiles = files.Where(file => !cache.Contains(file));
Parallel.ForEach(changedFiles, path =>
{
builder.WriteInfo($"{ResouceType} minify: {path}");
var text = File.ReadAllText(path);
var result = Minify(text);
var outputPath = GetMinifiedFileName(path);
File.WriteAllText(outputPath, result);
cache.AddCache(path);
builder.WriteHint($"\t=> {outputPath.PadRight(48)}{(100.0 * result.Length / text.Length):0.##}%");
});
cache.SaveCache();
}
files.ForEach(file =>
{
builder.OriginalResourceLength += new FileInfo(file).Length;
builder.MinifiedResourceLength += new FileInfo(GetMinifiedFileName(file)).Length;
});
builder.WriteSuccess($"{ResouceType} minify complete.");
return builder;
}
}
sealed class CssMinifier : ResourceMinifier
{
public override Predicate<FileInfo> FileFilter { get; } = file =>
{
return !file.FullName.Contains(".min")
&& !file.FullName.Contains("dark.scss")
&& !file.FullName.Contains("dark-template")
&& (file.Extension == ".css" || file.Extension == ".scss");
};
public override string ResouceType { get; } = "CSS";
public override string Minify(string input)
{
var commentRegex = new Regex(@"/\*[^\0]*?\*/|^\s*//.*$", RegexOptions.Multiline);
input = commentRegex.Replace(input, "");
var selectorRegex = new Regex(@"[\s]*([^\0,}]+?)[\s]*({)|[\s]*([^\0}]+?)(,)" + Environment.NewLine);
input = selectorRegex.Replace(input, "$1$2$3$4");
var ruleRegex = new Regex(@"[\s]*([a-z\-]+:)[ ]*(.*?)[ ]*(!important)?;[\s]*");
input = ruleRegex.Replace(input, "$1$2$3;");
return input
.Replace(Environment.NewLine, "")
.Replace("\n", "")
.Replace("\r", "")
.Replace(", ", ",");
}
public override ProjectBuilder Build(ProjectBuilder builder)
{
base.Build(builder);
return builder.BuildDarkStyles();
}
}
sealed class JavascriptMinifier : ResourceMinifier
{
private static readonly string UglifyEsArguments = @"-m";
private static readonly string NodePath = "node";
private static string uglifyEsAbsolutePath = null;
private static string UglifyEsAbsolutePath
{
get
{
if (uglifyEsAbsolutePath is null)
{
uglifyEsAbsolutePath = getUglifyEsPath();
}
return uglifyEsAbsolutePath;
}
set => uglifyEsAbsolutePath = value;
}
private static string getUglifyEsPath()
{
var uglifyEsPath = @"\uglify-es\bin\uglifyjs";
var localPath = @"\node_modules" + uglifyEsPath;
var globalPath = Environment.GetEnvironmentVariable("AppData") + @"\npm\node_modules" + uglifyEsPath;
if (File.Exists(localPath))
{
return localPath;
}
else if (File.Exists(globalPath))
{
return globalPath;
}
else
{
return "";
}
}
public JavascriptMinifier()
{
if (!File.Exists(UglifyEsAbsolutePath))
{
throw new FileNotFoundException("Node.js module \"uglify-es\" not found.");
}
}
public override Predicate<FileInfo> FileFilter { get; } = file =>
{
return !file.FullName.Contains(".min")
&& !file.FullName.Contains(@"builder\")
&& !file.FullName.Contains("bilibili-evolved.")
&& file.Extension == ".js";
};
public override string ResouceType { get; } = "JavaScript";
public override string Minify(string input)
{
var processInfo = new ProcessStartInfo
{
FileName = NodePath,
Arguments = $"{UglifyEsAbsolutePath} {UglifyEsArguments}",
UseShellExecute = false,
RedirectStandardInput = true,
RedirectStandardOutput = true,
};
var process = Process.Start(processInfo);
using (var writer = new StreamWriter(process.StandardInput.BaseStream, Encoding.UTF8))
{
writer.Write(input);
writer.Flush();
writer.Close();
using (var reader = new StreamReader(process.StandardOutput.BaseStream, Encoding.UTF8))
{
return reader.ReadToEnd().Trim();
}
}
}
}
sealed class HtmlMinifier : ResourceMinifier
{
public override Predicate<FileInfo> FileFilter { get; } = file =>
{
return !file.FullName.Contains(".min") && file.Extension == ".html";
};
public override string ResouceType { get; } = "HTML";
public override string Minify(string input)
{
var commentRegex = new Regex(@"<!--[^\0]*?-->", RegexOptions.Multiline);
input = commentRegex.Replace(input, "");
var blankRegex = new Regex(@"(?<=>)[\s]*([^\s]*)[\s]*(?=<)|[\s]*(?=/>)", RegexOptions.Multiline);
input = blankRegex.Replace(input, "$1");
return input
.Replace(Environment.NewLine, "")
.Replace("\n", "")
.Replace("\r", "");
}
}
}