mirror of
https://github.com/claunia/cuetools.net.git
synced 2025-12-16 18:14:25 +00:00
1.9.4... too many small changes to comment
This commit is contained in:
chudov
@@ -1,82 +1,82 @@
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// MusicBrainzObject.cs
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//
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// Copyright (c) 2008 Scott Peterson <lunchtimemama@gmail.com>
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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||||
// of this software and associated documentation files (the "Software"), to deal
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||||
// 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.
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||||
//
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||||
// 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,
|
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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using System;
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using System.Collections.Generic;
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using System.Collections.ObjectModel;
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using System.IO;
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using System.Net;
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using System.Reflection;
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using System.Text;
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using System.Threading;
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using System.Xml;
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namespace MusicBrainz
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{
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public abstract class MusicBrainzObject
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{
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#region Private Fields
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static DateTime last_accessed;
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static readonly TimeSpan min_interval = new TimeSpan (0, 0, 1); // 1 second
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static readonly object server_mutex = new object ();
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static readonly string [] rels_params = new string [] {
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"artist-rels",
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"release-rels",
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"track-rels",
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"label-rels",
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"url-rels"
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};
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bool all_data_loaded;
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bool all_rels_loaded;
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string id;
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byte score;
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ReadOnlyCollection<Relation<Artist>> artist_rels;
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ReadOnlyCollection<Relation<Release>> release_rels;
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ReadOnlyCollection<Relation<Track>> track_rels;
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ReadOnlyCollection<Relation<Label>> label_rels;
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ReadOnlyCollection<UrlRelation> url_rels;
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#endregion
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#region Constructors
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internal MusicBrainzObject (string id, string parameters)
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{
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all_data_loaded = true;
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CreateFromId (id, parameters ?? CreateInc ());
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}
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internal MusicBrainzObject (XmlReader reader, bool all_rels_loaded)
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{
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this.all_rels_loaded = all_rels_loaded;
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CreateFromXml (reader);
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}
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#endregion
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// MusicBrainzObject.cs
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//
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// Copyright (c) 2008 Scott Peterson <lunchtimemama@gmail.com>
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//
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// 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,
|
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
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// THE SOFTWARE.
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using System;
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using System.Collections.Generic;
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using System.Collections.ObjectModel;
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using System.IO;
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using System.Net;
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using System.Reflection;
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using System.Text;
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using System.Threading;
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using System.Xml;
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namespace MusicBrainz
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{
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public abstract class MusicBrainzObject
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{
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#region Private Fields
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static DateTime last_accessed;
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static readonly TimeSpan min_interval = new TimeSpan (1000000); // 0.1 second
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static readonly object server_mutex = new object ();
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static readonly string [] rels_params = new string [] {
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"artist-rels",
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"release-rels",
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"track-rels",
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"label-rels",
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"url-rels"
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};
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bool all_data_loaded;
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bool all_rels_loaded;
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string id;
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byte score;
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ReadOnlyCollection<Relation<Artist>> artist_rels;
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ReadOnlyCollection<Relation<Release>> release_rels;
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ReadOnlyCollection<Relation<Track>> track_rels;
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ReadOnlyCollection<Relation<Label>> label_rels;
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ReadOnlyCollection<UrlRelation> url_rels;
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#endregion
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#region Constructors
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internal MusicBrainzObject (string id, string parameters)
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{
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all_data_loaded = true;
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CreateFromId (id, parameters ?? CreateInc ());
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}
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internal MusicBrainzObject (XmlReader reader, bool all_rels_loaded)
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{
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this.all_rels_loaded = all_rels_loaded;
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CreateFromXml (reader);
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}
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#endregion
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#region Private Methods
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string CreateInc ()
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@@ -84,51 +84,51 @@ namespace MusicBrainz
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StringBuilder builder = new StringBuilder ();
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CreateIncCore (builder);
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return builder.ToString ();
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}
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void CreateFromId (string id, string parameters)
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{
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XmlProcessingClosure (
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CreateUrl (UrlExtension, id, parameters),
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delegate (XmlReader reader) {
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reader.ReadToFollowing ("metadata");
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reader.Read ();
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CreateFromXml (reader.ReadSubtree ());
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reader.Close ();
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}
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);
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}
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void CreateFromXml (XmlReader reader)
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{
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reader.Read ();
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id = reader ["id"];
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byte.TryParse (reader ["ext:score"], out score);
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ProcessAttributes (reader);
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while (reader.Read () && reader.NodeType != XmlNodeType.EndElement) {
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if (reader.Name == "relation-list") {
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all_rels_loaded = true;
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switch (reader ["target-type"]) {
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case "Artist":
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artist_rels = CreateRelation<Artist> (reader.ReadSubtree ());
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break;
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case "Release":
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release_rels = CreateRelation<Release> (reader.ReadSubtree ());
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break;
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case "Track":
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track_rels = CreateRelation<Track> (reader.ReadSubtree ());
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break;
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case "Label":
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label_rels = CreateRelation<Label> (reader.ReadSubtree ());
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break;
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}
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void CreateFromId (string id, string parameters)
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{
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XmlProcessingClosure (
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CreateUrl (UrlExtension, id, parameters),
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delegate (XmlReader reader) {
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reader.ReadToFollowing ("metadata");
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reader.Read ();
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CreateFromXml (reader.ReadSubtree ());
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reader.Close ();
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}
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);
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}
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void CreateFromXml (XmlReader reader)
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{
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reader.Read ();
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id = reader ["id"];
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byte.TryParse (reader ["ext:score"], out score);
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ProcessAttributes (reader);
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while (reader.Read () && reader.NodeType != XmlNodeType.EndElement) {
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if (reader.Name == "relation-list") {
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all_rels_loaded = true;
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switch (reader ["target-type"]) {
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case "Artist":
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artist_rels = CreateRelation<Artist> (reader.ReadSubtree ());
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break;
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case "Release":
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release_rels = CreateRelation<Release> (reader.ReadSubtree ());
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break;
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case "Track":
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track_rels = CreateRelation<Track> (reader.ReadSubtree ());
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break;
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case "Label":
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label_rels = CreateRelation<Label> (reader.ReadSubtree ());
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break;
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case "Url":
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url_rels = CreateUrlRelation (reader.ReadSubtree ());
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break;
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}
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} else
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ProcessXml (reader.ReadSubtree ());
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}
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reader.Close ();
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url_rels = CreateUrlRelation (reader.ReadSubtree ());
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break;
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}
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} else
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ProcessXml (reader.ReadSubtree ());
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}
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reader.Close ();
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}
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void ProcessXml (XmlReader reader)
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@@ -136,92 +136,92 @@ namespace MusicBrainz
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reader.Read ();
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ProcessXmlCore (reader);
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reader.Close ();
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}
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#endregion
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#region Protected
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internal bool AllDataLoaded {
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get { return all_data_loaded; }
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}
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internal bool AllRelsLoaded {
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get { return all_rels_loaded; }
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set { all_rels_loaded = value; }
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}
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internal virtual void CreateIncCore (StringBuilder builder)
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{
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if (!all_rels_loaded)
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AppendIncParameters (builder, rels_params);
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}
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internal static void AppendIncParameters (StringBuilder builder, string parameter)
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{
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builder.Append (builder.Length == 0 ? "&inc=" : "+");
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builder.Append (parameter);
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}
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internal static void AppendIncParameters (StringBuilder builder, string parameter1, string parameter2)
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{
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builder.Append (builder.Length == 0 ? "&inc=" : "+");
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builder.Append (parameter1);
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builder.Append ('+');
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builder.Append (parameter2);
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}
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internal static void AppendIncParameters (StringBuilder builder, string [] parameters)
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{
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foreach (string parameter in parameters)
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AppendIncParameters (builder, parameter);
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}
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internal void LoadMissingData ()
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{
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if (!all_data_loaded) {
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LoadMissingDataCore ();
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all_data_loaded = true;
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}
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}
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internal void LoadMissingDataCore (MusicBrainzObject obj)
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{
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if (!all_rels_loaded) {
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artist_rels = obj.GetArtistRelations ();
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release_rels = obj.GetReleaseRelations ();
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track_rels = obj.GetTrackRelations ();
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label_rels = obj.GetLabelRelations ();
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url_rels = obj.GetUrlRelations ();
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}
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}
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|
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internal T GetPropertyOrNull<T> (ref T field_reference) where T : class
|
||||
{
|
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if (field_reference == null) LoadMissingData ();
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return field_reference;
|
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}
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|
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internal T GetPropertyOrDefault<T> (ref T? field_reference) where T : struct
|
||||
{
|
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return GetPropertyOrDefault (ref field_reference, default (T));
|
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}
|
||||
|
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internal T GetPropertyOrDefault<T> (ref T? field_reference, T default_value) where T : struct
|
||||
{
|
||||
if (field_reference == null) LoadMissingData ();
|
||||
return field_reference ?? default_value;
|
||||
}
|
||||
|
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internal ReadOnlyCollection<T> GetPropertyOrNew<T> (ref ReadOnlyCollection<T> field_reference)
|
||||
{
|
||||
return GetPropertyOrNew (ref field_reference, true);
|
||||
}
|
||||
|
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internal ReadOnlyCollection<T> GetPropertyOrNew<T> (ref ReadOnlyCollection<T> field_reference, bool condition)
|
||||
{
|
||||
if (field_reference == null && condition) LoadMissingData ();
|
||||
return field_reference ?? new ReadOnlyCollection<T> (new T [0]);
|
||||
}
|
||||
|
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#endregion
|
||||
|
||||
#region Protected
|
||||
|
||||
internal bool AllDataLoaded {
|
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get { return all_data_loaded; }
|
||||
}
|
||||
|
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internal bool AllRelsLoaded {
|
||||
get { return all_rels_loaded; }
|
||||
set { all_rels_loaded = value; }
|
||||
}
|
||||
|
||||
internal virtual void CreateIncCore (StringBuilder builder)
|
||||
{
|
||||
if (!all_rels_loaded)
|
||||
AppendIncParameters (builder, rels_params);
|
||||
}
|
||||
|
||||
internal static void AppendIncParameters (StringBuilder builder, string parameter)
|
||||
{
|
||||
builder.Append (builder.Length == 0 ? "&inc=" : "+");
|
||||
builder.Append (parameter);
|
||||
}
|
||||
|
||||
internal static void AppendIncParameters (StringBuilder builder, string parameter1, string parameter2)
|
||||
{
|
||||
builder.Append (builder.Length == 0 ? "&inc=" : "+");
|
||||
builder.Append (parameter1);
|
||||
builder.Append ('+');
|
||||
builder.Append (parameter2);
|
||||
}
|
||||
|
||||
internal static void AppendIncParameters (StringBuilder builder, string [] parameters)
|
||||
{
|
||||
foreach (string parameter in parameters)
|
||||
AppendIncParameters (builder, parameter);
|
||||
}
|
||||
|
||||
internal void LoadMissingData ()
|
||||
{
|
||||
if (!all_data_loaded) {
|
||||
LoadMissingDataCore ();
|
||||
all_data_loaded = true;
|
||||
}
|
||||
}
|
||||
|
||||
internal void LoadMissingDataCore (MusicBrainzObject obj)
|
||||
{
|
||||
if (!all_rels_loaded) {
|
||||
artist_rels = obj.GetArtistRelations ();
|
||||
release_rels = obj.GetReleaseRelations ();
|
||||
track_rels = obj.GetTrackRelations ();
|
||||
label_rels = obj.GetLabelRelations ();
|
||||
url_rels = obj.GetUrlRelations ();
|
||||
}
|
||||
}
|
||||
|
||||
internal T GetPropertyOrNull<T> (ref T field_reference) where T : class
|
||||
{
|
||||
if (field_reference == null) LoadMissingData ();
|
||||
return field_reference;
|
||||
}
|
||||
|
||||
internal T GetPropertyOrDefault<T> (ref T? field_reference) where T : struct
|
||||
{
|
||||
return GetPropertyOrDefault (ref field_reference, default (T));
|
||||
}
|
||||
|
||||
internal T GetPropertyOrDefault<T> (ref T? field_reference, T default_value) where T : struct
|
||||
{
|
||||
if (field_reference == null) LoadMissingData ();
|
||||
return field_reference ?? default_value;
|
||||
}
|
||||
|
||||
internal ReadOnlyCollection<T> GetPropertyOrNew<T> (ref ReadOnlyCollection<T> field_reference)
|
||||
{
|
||||
return GetPropertyOrNew (ref field_reference, true);
|
||||
}
|
||||
|
||||
internal ReadOnlyCollection<T> GetPropertyOrNew<T> (ref ReadOnlyCollection<T> field_reference, bool condition)
|
||||
{
|
||||
if (field_reference == null && condition) LoadMissingData ();
|
||||
return field_reference ?? new ReadOnlyCollection<T> (new T [0]);
|
||||
}
|
||||
|
||||
internal virtual void ProcessXmlCore (XmlReader reader)
|
||||
@@ -231,101 +231,101 @@ namespace MusicBrainz
|
||||
|
||||
internal virtual void ProcessAttributes (XmlReader reader)
|
||||
{
|
||||
}
|
||||
|
||||
internal abstract void LoadMissingDataCore ();
|
||||
internal abstract string UrlExtension { get; }
|
||||
|
||||
#endregion
|
||||
|
||||
#region Public
|
||||
|
||||
public virtual string Id {
|
||||
get { return id; }
|
||||
}
|
||||
|
||||
public virtual byte Score {
|
||||
get { return score; }
|
||||
}
|
||||
|
||||
public virtual ReadOnlyCollection<Relation<Artist>> GetArtistRelations ()
|
||||
{
|
||||
return GetPropertyOrNew (ref artist_rels, !all_rels_loaded);
|
||||
}
|
||||
|
||||
public virtual ReadOnlyCollection<Relation<Release>> GetReleaseRelations ()
|
||||
{
|
||||
return GetPropertyOrNew (ref release_rels, !all_rels_loaded);
|
||||
}
|
||||
|
||||
public virtual ReadOnlyCollection<Relation<Track>> GetTrackRelations ()
|
||||
{
|
||||
return GetPropertyOrNew (ref track_rels, !all_rels_loaded);
|
||||
}
|
||||
|
||||
public virtual ReadOnlyCollection<Relation<Label>> GetLabelRelations ()
|
||||
{
|
||||
return GetPropertyOrNew (ref label_rels, !all_rels_loaded);
|
||||
}
|
||||
|
||||
public virtual ReadOnlyCollection<UrlRelation> GetUrlRelations ()
|
||||
{
|
||||
return GetPropertyOrNew (ref url_rels, !all_rels_loaded);
|
||||
}
|
||||
|
||||
public override bool Equals (object obj)
|
||||
{
|
||||
return this == obj as MusicBrainzObject;
|
||||
}
|
||||
|
||||
public static bool operator ==(MusicBrainzObject obj1, MusicBrainzObject obj2)
|
||||
}
|
||||
|
||||
internal abstract void LoadMissingDataCore ();
|
||||
internal abstract string UrlExtension { get; }
|
||||
|
||||
#endregion
|
||||
|
||||
#region Public
|
||||
|
||||
public virtual string Id {
|
||||
get { return id; }
|
||||
}
|
||||
|
||||
public virtual byte Score {
|
||||
get { return score; }
|
||||
}
|
||||
|
||||
public virtual ReadOnlyCollection<Relation<Artist>> GetArtistRelations ()
|
||||
{
|
||||
return GetPropertyOrNew (ref artist_rels, !all_rels_loaded);
|
||||
}
|
||||
|
||||
public virtual ReadOnlyCollection<Relation<Release>> GetReleaseRelations ()
|
||||
{
|
||||
return GetPropertyOrNew (ref release_rels, !all_rels_loaded);
|
||||
}
|
||||
|
||||
public virtual ReadOnlyCollection<Relation<Track>> GetTrackRelations ()
|
||||
{
|
||||
return GetPropertyOrNew (ref track_rels, !all_rels_loaded);
|
||||
}
|
||||
|
||||
public virtual ReadOnlyCollection<Relation<Label>> GetLabelRelations ()
|
||||
{
|
||||
return GetPropertyOrNew (ref label_rels, !all_rels_loaded);
|
||||
}
|
||||
|
||||
public virtual ReadOnlyCollection<UrlRelation> GetUrlRelations ()
|
||||
{
|
||||
return GetPropertyOrNew (ref url_rels, !all_rels_loaded);
|
||||
}
|
||||
|
||||
public override bool Equals (object obj)
|
||||
{
|
||||
return this == obj as MusicBrainzObject;
|
||||
}
|
||||
|
||||
public static bool operator ==(MusicBrainzObject obj1, MusicBrainzObject obj2)
|
||||
{
|
||||
if (Object.ReferenceEquals (obj1, null)) {
|
||||
return Object.ReferenceEquals (obj2, null);
|
||||
}
|
||||
return !Object.ReferenceEquals (obj2, null) && obj1.GetType () == obj2.GetType () && obj1.Id == obj2.Id;
|
||||
}
|
||||
|
||||
public static bool operator !=(MusicBrainzObject obj1, MusicBrainzObject obj2)
|
||||
{
|
||||
return !(obj1 == obj2);
|
||||
}
|
||||
|
||||
public override int GetHashCode ()
|
||||
{
|
||||
return (GetType ().Name + Id).GetHashCode ();
|
||||
}
|
||||
|
||||
#endregion
|
||||
|
||||
#region Static
|
||||
|
||||
static ReadOnlyCollection<Relation<T>> CreateRelation<T> (XmlReader reader) where T : MusicBrainzObject
|
||||
{
|
||||
List<Relation<T>> relations = new List<Relation<T>> ();
|
||||
while (reader.ReadToFollowing ("relation")) {
|
||||
string type = reader ["type"];
|
||||
RelationDirection direction = RelationDirection.Forward;
|
||||
string direction_string = reader ["direction"];
|
||||
if (direction_string != null && direction_string == "backward")
|
||||
direction = RelationDirection.Backward;
|
||||
string begin = reader ["begin"];
|
||||
string end = reader ["end"];
|
||||
string attributes_string = reader ["attributes"];
|
||||
string [] attributes = attributes_string == null
|
||||
? null : attributes_string.Split (' ');
|
||||
|
||||
reader.Read ();
|
||||
relations.Add (new Relation<T> (
|
||||
type,
|
||||
ConstructMusicBrainzObjectFromXml<T> (reader.ReadSubtree ()),
|
||||
direction,
|
||||
begin,
|
||||
end,
|
||||
attributes));
|
||||
}
|
||||
reader.Close ();
|
||||
return relations.AsReadOnly ();
|
||||
}
|
||||
return !Object.ReferenceEquals (obj2, null) && obj1.GetType () == obj2.GetType () && obj1.Id == obj2.Id;
|
||||
}
|
||||
|
||||
public static bool operator !=(MusicBrainzObject obj1, MusicBrainzObject obj2)
|
||||
{
|
||||
return !(obj1 == obj2);
|
||||
}
|
||||
|
||||
public override int GetHashCode ()
|
||||
{
|
||||
return (GetType ().Name + Id).GetHashCode ();
|
||||
}
|
||||
|
||||
#endregion
|
||||
|
||||
#region Static
|
||||
|
||||
static ReadOnlyCollection<Relation<T>> CreateRelation<T> (XmlReader reader) where T : MusicBrainzObject
|
||||
{
|
||||
List<Relation<T>> relations = new List<Relation<T>> ();
|
||||
while (reader.ReadToFollowing ("relation")) {
|
||||
string type = reader ["type"];
|
||||
RelationDirection direction = RelationDirection.Forward;
|
||||
string direction_string = reader ["direction"];
|
||||
if (direction_string != null && direction_string == "backward")
|
||||
direction = RelationDirection.Backward;
|
||||
string begin = reader ["begin"];
|
||||
string end = reader ["end"];
|
||||
string attributes_string = reader ["attributes"];
|
||||
string [] attributes = attributes_string == null
|
||||
? null : attributes_string.Split (' ');
|
||||
|
||||
reader.Read ();
|
||||
relations.Add (new Relation<T> (
|
||||
type,
|
||||
ConstructMusicBrainzObjectFromXml<T> (reader.ReadSubtree ()),
|
||||
direction,
|
||||
begin,
|
||||
end,
|
||||
attributes));
|
||||
}
|
||||
reader.Close ();
|
||||
return relations.AsReadOnly ();
|
||||
}
|
||||
|
||||
static ReadOnlyCollection<UrlRelation> CreateUrlRelation (XmlReader reader)
|
||||
@@ -348,138 +348,141 @@ namespace MusicBrainz
|
||||
attributes));
|
||||
}
|
||||
return url_rels.AsReadOnly ();
|
||||
}
|
||||
|
||||
static string CreateUrl (string url_extension, int limit, int offset, string parameters)
|
||||
{
|
||||
StringBuilder builder = new StringBuilder ();
|
||||
if (limit != 25) {
|
||||
builder.Append ("&limit=");
|
||||
builder.Append (limit);
|
||||
}
|
||||
if (offset != 0) {
|
||||
builder.Append ("&offset=");
|
||||
builder.Append (offset);
|
||||
}
|
||||
builder.Append (parameters);
|
||||
return CreateUrl (url_extension, string.Empty, builder.ToString ());
|
||||
}
|
||||
|
||||
static string CreateUrl (string url_extension, string id, string parameters)
|
||||
{
|
||||
StringBuilder builder = new StringBuilder (
|
||||
MusicBrainzService.ServiceUrl.AbsoluteUri.Length + id.Length + parameters.Length + 9);
|
||||
builder.Append (MusicBrainzService.ServiceUrl.AbsoluteUri);
|
||||
builder.Append (url_extension);
|
||||
builder.Append ('/');
|
||||
builder.Append (id);
|
||||
builder.Append ("?type=xml");
|
||||
builder.Append (parameters);
|
||||
return builder.ToString ();
|
||||
}
|
||||
|
||||
static void XmlProcessingClosure (string url, XmlProcessingDelegate code)
|
||||
{
|
||||
Monitor.Enter (server_mutex);
|
||||
|
||||
// Don't access the MB server twice within a second
|
||||
TimeSpan time = DateTime.Now - last_accessed;
|
||||
if (min_interval > time)
|
||||
Thread.Sleep ((min_interval - time).Milliseconds);
|
||||
}
|
||||
|
||||
static string CreateUrl (string url_extension, int limit, int offset, string parameters)
|
||||
{
|
||||
StringBuilder builder = new StringBuilder ();
|
||||
if (limit != 25) {
|
||||
builder.Append ("&limit=");
|
||||
builder.Append (limit);
|
||||
}
|
||||
if (offset != 0) {
|
||||
builder.Append ("&offset=");
|
||||
builder.Append (offset);
|
||||
}
|
||||
builder.Append (parameters);
|
||||
return CreateUrl (url_extension, string.Empty, builder.ToString ());
|
||||
}
|
||||
|
||||
static string CreateUrl (string url_extension, string id, string parameters)
|
||||
{
|
||||
StringBuilder builder = new StringBuilder (
|
||||
MusicBrainzService.ServiceUrl.AbsoluteUri.Length + id.Length + parameters.Length + 9);
|
||||
builder.Append (MusicBrainzService.ServiceUrl.AbsoluteUri);
|
||||
builder.Append (url_extension);
|
||||
builder.Append ('/');
|
||||
builder.Append (id);
|
||||
builder.Append ("?type=xml");
|
||||
builder.Append (parameters);
|
||||
return builder.ToString ();
|
||||
}
|
||||
|
||||
static void XmlProcessingClosure (string url, XmlProcessingDelegate code)
|
||||
{
|
||||
Monitor.Enter (server_mutex);
|
||||
|
||||
// Don't access the MB server twice within a second
|
||||
if (last_accessed != null)
|
||||
{
|
||||
TimeSpan time = DateTime.Now - last_accessed;
|
||||
if (min_interval > time)
|
||||
Thread.Sleep((min_interval - time).Milliseconds);
|
||||
}
|
||||
|
||||
WebRequest request = WebRequest.Create (url);
|
||||
bool cache_implemented = false;
|
||||
|
||||
try {
|
||||
request.CachePolicy = MusicBrainzService.CachePolicy;
|
||||
cache_implemented = true;
|
||||
} catch (NotImplementedException) {}
|
||||
|
||||
HttpWebResponse response = null;
|
||||
|
||||
try {
|
||||
response = (HttpWebResponse)request.GetResponse ();
|
||||
} catch (WebException e) {
|
||||
response = (HttpWebResponse)e.Response;
|
||||
}
|
||||
|
||||
if (response == null) throw new MusicBrainzNotFoundException ();
|
||||
|
||||
switch (response.StatusCode) {
|
||||
case HttpStatusCode.BadRequest:
|
||||
Monitor.Exit (server_mutex);
|
||||
throw new MusicBrainzInvalidParameterException ();
|
||||
case HttpStatusCode.Unauthorized:
|
||||
Monitor.Exit (server_mutex);
|
||||
throw new MusicBrainzUnauthorizedException ();
|
||||
case HttpStatusCode.NotFound:
|
||||
Monitor.Exit (server_mutex);
|
||||
throw new MusicBrainzNotFoundException ();
|
||||
}
|
||||
|
||||
WebRequest request = WebRequest.Create (url);
|
||||
bool cache_implemented = false;
|
||||
|
||||
try {
|
||||
request.CachePolicy = MusicBrainzService.CachePolicy;
|
||||
cache_implemented = true;
|
||||
} catch (NotImplementedException) {}
|
||||
|
||||
HttpWebResponse response = null;
|
||||
|
||||
try {
|
||||
response = (HttpWebResponse)request.GetResponse ();
|
||||
} catch (WebException e) {
|
||||
response = (HttpWebResponse)e.Response;
|
||||
}
|
||||
|
||||
if (response == null) throw new MusicBrainzNotFoundException ();
|
||||
|
||||
switch (response.StatusCode) {
|
||||
case HttpStatusCode.BadRequest:
|
||||
Monitor.Exit (server_mutex);
|
||||
throw new MusicBrainzInvalidParameterException ();
|
||||
case HttpStatusCode.Unauthorized:
|
||||
Monitor.Exit (server_mutex);
|
||||
throw new MusicBrainzUnauthorizedException ();
|
||||
case HttpStatusCode.NotFound:
|
||||
Monitor.Exit (server_mutex);
|
||||
throw new MusicBrainzNotFoundException ();
|
||||
}
|
||||
|
||||
bool from_cache = cache_implemented && response.IsFromCache;
|
||||
|
||||
if (from_cache) Monitor.Exit (server_mutex);
|
||||
|
||||
MusicBrainzService.OnXmlRequest (url, from_cache);
|
||||
|
||||
// Should we read the stream into a memory stream and run the XmlReader off of that?
|
||||
code (new XmlTextReader (response.GetResponseStream ()));
|
||||
response.Close ();
|
||||
|
||||
if (!from_cache) {
|
||||
last_accessed = DateTime.Now;
|
||||
Monitor.Exit (server_mutex);
|
||||
}
|
||||
}
|
||||
|
||||
#endregion
|
||||
|
||||
#region Query
|
||||
|
||||
internal static string CreateLuceneParameter (string query)
|
||||
{
|
||||
StringBuilder builder = new StringBuilder (query.Length + 7);
|
||||
builder.Append ("&query=");
|
||||
Utils.PercentEncode (builder, query);
|
||||
return builder.ToString ();
|
||||
}
|
||||
|
||||
internal static List<T> Query<T> (string url_extension,
|
||||
int limit, int offset,
|
||||
string parameters,
|
||||
out int? count) where T : MusicBrainzObject
|
||||
{
|
||||
int count_value = 0;
|
||||
List<T> results = new List<T> ();
|
||||
XmlProcessingClosure (
|
||||
CreateUrl (url_extension, limit, offset, parameters),
|
||||
delegate (XmlReader reader) {
|
||||
reader.ReadToFollowing ("metadata");
|
||||
reader.Read ();
|
||||
int.TryParse (reader ["count"], out count_value);
|
||||
while (reader.Read () && reader.NodeType == XmlNodeType.Element)
|
||||
results.Add (ConstructMusicBrainzObjectFromXml<T> (reader.ReadSubtree ()));
|
||||
reader.Close ();
|
||||
}
|
||||
);
|
||||
count = count_value == 0 ? results.Count : count_value;
|
||||
return results;
|
||||
}
|
||||
|
||||
static T ConstructMusicBrainzObjectFromXml<T> (XmlReader reader) where T : MusicBrainzObject
|
||||
{
|
||||
ConstructorInfo constructor = typeof (T).GetConstructor (
|
||||
BindingFlags.NonPublic | BindingFlags.Instance,
|
||||
null,
|
||||
new Type [] { typeof (XmlReader) },
|
||||
null);
|
||||
return (T)constructor.Invoke (new object [] {reader});
|
||||
}
|
||||
|
||||
#endregion
|
||||
|
||||
}
|
||||
|
||||
internal delegate void XmlProcessingDelegate (XmlReader reader);
|
||||
}
|
||||
if (from_cache) Monitor.Exit (server_mutex);
|
||||
|
||||
MusicBrainzService.OnXmlRequest (url, from_cache);
|
||||
|
||||
// Should we read the stream into a memory stream and run the XmlReader off of that?
|
||||
code (new XmlTextReader (response.GetResponseStream ()));
|
||||
response.Close ();
|
||||
|
||||
if (!from_cache) {
|
||||
last_accessed = DateTime.Now;
|
||||
Monitor.Exit (server_mutex);
|
||||
}
|
||||
}
|
||||
|
||||
#endregion
|
||||
|
||||
#region Query
|
||||
|
||||
internal static string CreateLuceneParameter (string query)
|
||||
{
|
||||
StringBuilder builder = new StringBuilder (query.Length + 7);
|
||||
builder.Append ("&query=");
|
||||
Utils.PercentEncode (builder, query);
|
||||
return builder.ToString ();
|
||||
}
|
||||
|
||||
internal static List<T> Query<T> (string url_extension,
|
||||
int limit, int offset,
|
||||
string parameters,
|
||||
out int? count) where T : MusicBrainzObject
|
||||
{
|
||||
int count_value = 0;
|
||||
List<T> results = new List<T> ();
|
||||
XmlProcessingClosure (
|
||||
CreateUrl (url_extension, limit, offset, parameters),
|
||||
delegate (XmlReader reader) {
|
||||
reader.ReadToFollowing ("metadata");
|
||||
reader.Read ();
|
||||
int.TryParse (reader ["count"], out count_value);
|
||||
while (reader.Read () && reader.NodeType == XmlNodeType.Element)
|
||||
results.Add (ConstructMusicBrainzObjectFromXml<T> (reader.ReadSubtree ()));
|
||||
reader.Close ();
|
||||
}
|
||||
);
|
||||
count = count_value == 0 ? results.Count : count_value;
|
||||
return results;
|
||||
}
|
||||
|
||||
static T ConstructMusicBrainzObjectFromXml<T> (XmlReader reader) where T : MusicBrainzObject
|
||||
{
|
||||
ConstructorInfo constructor = typeof (T).GetConstructor (
|
||||
BindingFlags.NonPublic | BindingFlags.Instance,
|
||||
null,
|
||||
new Type [] { typeof (XmlReader) },
|
||||
null);
|
||||
return (T)constructor.Invoke (new object [] {reader});
|
||||
}
|
||||
|
||||
#endregion
|
||||
|
||||
}
|
||||
|
||||
internal delegate void XmlProcessingDelegate (XmlReader reader);
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user