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Chirp.cs
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Chirp.cs
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namespace Chirpy
{
using System;
using System.Collections.Generic;
using System.ComponentModel.Composition;
using System.ComponentModel.Composition.Hosting;
using System.Diagnostics;
using System.Linq;
using ChirpyInterface;
using EnvDTE;
using Extensions;
using Imports;
using Logging;
[Export]
public class Chirp
{
[Import] public IInternalEngineResolver EngineResolver { get; set; }
[Import] public IExtensionResolver ExtensionResolver { get; set; }
[Import] public ITaskList TaskList { get; set; }
[Import] public IFileHandler FileHandler { get; set; }
[Import] public ILogger Logger { get; set; }
public Dictionary<string, List<ProjectItem>> Dependancies { get; set; }
public Chirp()
{
Dependancies = new Dictionary<string, List<ProjectItem>>();
}
public bool CheckDependancies(ProjectItem projectItem)
{
var filename = projectItem.FileName();
var engine = EngineResolver.GetEngineByFilename(filename);
if (engine == null)
return false;
var contents = FileHandler.GetContents(filename);
SaveDependancies(projectItem, filename, contents, engine);
return true;
}
public void RemoveDependancies(ProjectItem projectItem)
{
var filename = projectItem.FileName();
if (Dependancies.ContainsKey(filename))
Dependancies.Remove(filename);
RemoveDependanciesForFile(projectItem);
}
public IEnumerable<FileAssociation> Run(ProjectItem projectItem)
{
var filename = projectItem.FileName();
var engine = EngineResolver.GetEngineByFilename(filename);
var result = new List<FileAssociation>();
if (engine != null)
result.AddRange(ProcessEngine(projectItem, filename, engine));
var associations = RunDependancies(filename);
if (associations != null)
result.AddRange(associations);
return result;
}
public IEnumerable<FileAssociation> RunDependancies(string filename)
{
if(!Dependancies.ContainsKey(filename))
return null;
var dependancies = Dependancies[filename];
var result = new List<FileAssociation>();
foreach (var dependancy in dependancies)
{
var fileAssociations = Run(dependancy);
if (fileAssociations != null)
result.AddRange(fileAssociations);
}
return result;
}
IEnumerable<FileAssociation> ProcessEngine(ProjectItem projectItem, string filename, EngineContainer engine)
{
List<EngineResult> engineResults = null;
try
{
var contents = FileHandler.GetContents(filename);
engineResults = engine.Process(contents, filename);
}
catch (Exception e)
{
TaskList.Add(e.Message, filename, ErrorCategory.Error);
Console.WriteLine("{0}", e.Message);
}
if (engineResults == null)
yield break;
foreach (var engineResult in engineResults)
{
if (engineResult.Exceptions.Any())
{
foreach (var exception in engineResult.Exceptions)
{
if (string.IsNullOrEmpty(exception.FileName))
{
exception.FileName = filename;
}
TaskList.Add(exception);
}
continue;
}
if (engineResult.Contents == null)
continue;
var outputFilename = engineResult.FileName;
if (!string.IsNullOrEmpty(engineResult.Extension))
outputFilename = GetOutputFileName(engineResult, filename, engine);
outputFilename = FileHandler.GetAbsoluteFileName(outputFilename, filename);
FileHandler.SaveFile(outputFilename, engineResult.Contents);
yield return new FileAssociation(outputFilename, projectItem);
Logger.Log(string.Format("{0} > {1}", engine.Name, outputFilename));
}
}
string GetOutputFileName(EngineResult result, string filename, EngineContainer engine)
{
var baseFileName = filename;
if (!string.IsNullOrEmpty(result.FileName))
baseFileName = result.FileName;
var inputExtension = ExtensionResolver.GetExtensionFromCategory(engine.Category);
if (baseFileName.EndsWith(inputExtension))
baseFileName = filename.Substring(0, filename.Length - inputExtension.Length);
else
baseFileName = FileHandler.GetBaseFileName(baseFileName);
return string.Format("{0}.{1}", baseFileName, result.Extension);
}
void SaveDependancies(ProjectItem projectItem, string filename, string contents, EngineContainer engine)
{
RemoveDependanciesForFile(projectItem);
var dependancies = engine.GetDependancies(contents, filename);
if(dependancies == null)
return;
AddDependanciesForFile(projectItem, filename, dependancies);
}
void AddDependanciesForFile(ProjectItem projectItem, string filename, IEnumerable<string> dependancies)
{
foreach (var s in dependancies)
{
var dependancy = FileHandler.GetAbsoluteFileName(s, relativeTo: filename);
if (Dependancies.ContainsKey(dependancy))
Dependancies[dependancy].Add(projectItem);
else
Dependancies[dependancy] = new List<ProjectItem> {projectItem};
}
}
void RemoveDependanciesForFile(ProjectItem projectItem)
{
foreach (var key in Dependancies.Keys.ToArray())
{
var files = Dependancies[key];
if (files.Remove(projectItem) && files.Count == 0)
Dependancies.Remove(key);
}
}
}
}