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ScriptLibraryComposer.cs
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144 lines (124 loc) · 5.67 KB
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using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using ScriptCs.Contracts;
namespace ScriptCs
{
public class ScriptLibraryComposer : IScriptLibraryComposer
{
private readonly IFileSystem _fileSystem;
private readonly IFilePreProcessor _preProcessor;
private readonly IPackageContainer _packageContainer;
private readonly IPackageAssemblyResolver _packageAssemblyResolver;
private readonly ILog _logger;
public ScriptLibraryComposer(IFileSystem fileSystem, IFilePreProcessor preProcessor, IPackageContainer packageContainer, IPackageAssemblyResolver packageAssemblyResolver, ILogProvider logProvider)
{
Guard.AgainstNullArgument("fileSystem", fileSystem);
Guard.AgainstNullArgument("preProcessor", preProcessor);
Guard.AgainstNullArgument("packageContainer", packageContainer);
Guard.AgainstNullArgument("packageAssemblyResolver", packageAssemblyResolver);
Guard.AgainstNullArgument("logProvider", logProvider);
_fileSystem = fileSystem;
_preProcessor = preProcessor;
_packageContainer = packageContainer;
_packageAssemblyResolver = packageAssemblyResolver;
_logger = logProvider.ForCurrentType();
}
internal string GetMainScript(IPackageObject package)
{
var content = package.GetContentFiles()
.Where(f => f.EndsWith("main.csx", StringComparison.InvariantCultureIgnoreCase)).ToArray();
string script = null;
var count = content.Length;
if (count == 1)
{
script = content[0];
}
else if (content.Length > 1)
{
_logger.WarnFormat("Script Libraries in '{0}' ignored due to multiple Main files being present", package.FullName);
return null;
}
if (script != null)
{
_logger.DebugFormat("Found main script: {0}", script);
}
return script;
}
public virtual string ScriptLibrariesFile => "ScriptLibraries.csx";
public void Compose(string workingDirectory, StringBuilder builder = null)
{
if (string.IsNullOrWhiteSpace(ScriptLibrariesFile))
{
return;
}
var packagesPath = Path.Combine(workingDirectory, _fileSystem.PackagesFolder);
var packageScriptsPath = Path.Combine(packagesPath, ScriptLibrariesFile);
if (!_fileSystem.DirectoryExists(packagesPath) || _fileSystem.FileExists(packageScriptsPath))
{
return;
}
if (builder == null)
{
builder = new StringBuilder();
}
var namespaces = new List<string>();
var references = new List<string>();
var packageReferences = _packageAssemblyResolver.GetPackages(workingDirectory);
foreach (var reference in packageReferences)
{
ProcessPackage(packagesPath, reference, builder, references, namespaces);
}
foreach (var ns in namespaces)
{
builder.Insert(0, String.Format("using {0};{1}", ns, Environment.NewLine));
}
foreach (var reference in references)
{
builder.Insert(0, String.Format("#r {0}{1}", reference, Environment.NewLine));
}
_fileSystem.WriteToFile(packageScriptsPath, builder.ToString());
}
protected internal virtual void ProcessPackage(
string packagesPath,
IPackageReference reference,
StringBuilder builder,
List<string> references,
List<string> namespaces)
{
Guard.AgainstNullArgument("reference", reference);
Guard.AgainstNullArgument("builder", builder);
Guard.AgainstNullArgument("references", references);
Guard.AgainstNullArgument("namespaces", namespaces);
_logger.DebugFormat("Finding package:{0}", reference.PackageId);
var package = _packageContainer.FindPackage(packagesPath, reference);
if (package == null)
{
_logger.WarnFormat("Package missing: {0}", reference.PackageId);
return;
}
_logger.Debug("Package found");
var script = GetMainScript(package);
if (script != null)
{
script = Path.Combine(packagesPath, string.Format("{0}.{1}", package.Id, package.TextVersion), script);
_logger.Debug("Pre-processing script");
var result = _preProcessor.ProcessFile(script);
var fileWithoutExtension = Path.GetFileNameWithoutExtension(script);
var classname = fileWithoutExtension.Substring(0, fileWithoutExtension.Length - 4);
_logger.DebugFormat("Created Script Libary class: {0}", classname);
var classBuilder = new StringBuilder();
classBuilder.AppendFormat("public class {0} : ScriptCs.ScriptLibraryWrapper {{{1}", classname, Environment.NewLine);
classBuilder.AppendLine(result.Code);
classBuilder.AppendLine("}");
var classDefinition = classBuilder.ToString();
_logger.TraceFormat("Class definition:{0}{0}{1}", Environment.NewLine, classDefinition);
builder.Append(classDefinition);
references.AddRange(result.References);
namespaces.AddRange(result.Namespaces);
}
}
}
}