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//
// FileSearchCategory.cs
//
// Author:
// Mike Krüger <mkrueger@xamarin.com>
//
// Copyright (c) 2012 mkrueger
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
using System;
using System.Threading;
using System.Threading.Tasks;
using MonoDevelop.Core;
using System.Collections.Generic;
using MonoDevelop.Core.Instrumentation;
using MonoDevelop.Projects;
using MonoDevelop.Ide.Gui;
using MonoDevelop.Ide;
using MonoDevelop.Ide.TypeSystem;
using MonoDevelop.Core.Text;
using Gtk;
using System.Linq;
using Microsoft.CodeAnalysis;
namespace MonoDevelop.Components.MainToolbar
{
class FileSearchCategory : SearchCategory
{
public FileSearchCategory () : base (GettextCatalog.GetString ("Files"))
{
sortOrder = HighPriorityResultsOrder;
}
static FileSearchCategory ()
{
IdeApp.Workspace.SolutionLoaded += delegate { allFilesCache = null; };
IdeApp.Workspace.SolutionUnloaded += delegate { allFilesCache = null; };
IdeApp.Workspace.ItemAddedToSolution += delegate { allFilesCache = null; };
IdeApp.Workspace.ItemRemovedFromSolution += delegate { allFilesCache = null; };
IdeApp.Workspace.FileAddedToProject += delegate { allFilesCache = null; };
IdeApp.Workspace.FileRemovedFromProject += delegate { allFilesCache = null; };
IdeApp.Workspace.FileRenamedInProject += delegate { allFilesCache = null; };
IdeApp.Workbench.DocumentOpened += delegate { allFilesCache = null; };
IdeApp.Workbench.DocumentClosed += delegate { allFilesCache = null; };
}
List<Tuple<string, string, ProjectFile>> GenerateAllFiles ()
{
//Slowest thing here is GetRelProjectPath, hence Tuple<,,> needs to be cached
var list = new List<Tuple<string, string, ProjectFile>> ();
foreach (var doc in IdeApp.Workbench.Documents) {
// We only want to check it here if it's not part
// of the open combine. Otherwise, it will get
// checked down below.
if (doc.Owner == null && doc.IsFile) {
var pf = new ProjectFile (doc.Name);
list.Add (new Tuple<string, string, ProjectFile> (System.IO.Path.GetFileName (pf.FilePath), FileSearchResult.GetRelProjectPath (pf), pf));
}
}
var projects = IdeApp.Workspace.GetAllProjects ();
foreach (var p in projects) {
foreach (ProjectFile pf in p.Files) {
if (pf.Subtype != Subtype.Directory && (pf.Flags & ProjectItemFlags.Hidden) != ProjectItemFlags.Hidden) {
list.Add (new Tuple<string, string, ProjectFile> (System.IO.Path.GetFileName (pf.FilePath), FileSearchResult.GetRelProjectPath (pf), pf));
}
}
}
return list;
}
string [] validTags = new [] { "file", "f" };
public override string [] Tags {
get {
return validTags;
}
}
public override bool IsValidTag (string tag)
{
return validTags.Any (t => t == tag);
}
static List<Tuple<string, string, ProjectFile>> allFilesCache;
static SemaphoreSlim allFilesLock = new SemaphoreSlim (1, 1);
public override Task GetResults (ISearchResultCallback searchResultCallback, SearchPopupSearchPattern pattern, CancellationToken token)
{
return Task.Run (async delegate {
List<Tuple<string, string, ProjectFile>> files;
//This lock is here in case user quickly types 5 letters which triggers 5 threads
//we don't want to use all CPU doing same thing, instead 1st one will create cache, others will wait here
//and then all will use cached version...
bool locked = false;
try {
locked = await allFilesLock.WaitAsync (System.Threading.Timeout.Infinite, token).ConfigureAwait (false);
files = allFilesCache = allFilesCache ?? GenerateAllFiles ();
if (token.IsCancellationRequested)
return;
} finally {
if (locked)
allFilesLock.Release ();
}
var matcher = StringMatcher.GetMatcher (pattern.Pattern, false);
var savedMatches = new Dictionary<string, MatchResult> (files.Count * 2);
foreach (var file in files) {
if (token.IsCancellationRequested)
break;
int rank1;
int rank2;
var match1 = MatchName (savedMatches, matcher, file.Item1, out rank1);
var match2 = MatchName (savedMatches, matcher, file.Item2, out rank2);
if (match1 && match2) {
if (rank1 > rank2 || (rank1 == rank2 && String.CompareOrdinal (file.Item1, file.Item2) > 0)) {
searchResultCallback.ReportResult (new FileSearchResult (pattern.Pattern, file.Item1, rank1, file.Item3));
} else {
searchResultCallback.ReportResult (new FileSearchResult (pattern.Pattern, file.Item2, rank2, file.Item3));
}
} else if (match1) {
searchResultCallback.ReportResult (new FileSearchResult (pattern.Pattern, file.Item1, rank1, file.Item3));
} else if (match2) {
searchResultCallback.ReportResult (new FileSearchResult (pattern.Pattern, file.Item2, rank2, file.Item3));
}
}
}, token);
}
static bool MatchName (Dictionary<string, MatchResult> savedMatches, StringMatcher matcher, string name, out int matchRank)
{
if (name == null) {
matchRank = -1;
return false;
}
MatchResult savedMatch;
if (!savedMatches.TryGetValue (name, out savedMatch)) {
bool doesMatch = matcher.CalcMatchRank (name, out matchRank);
savedMatches [name] = savedMatch = new MatchResult (doesMatch, matchRank);
}
matchRank = savedMatch.Rank;
return savedMatch.Match;
}
}
}
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