C# Song.SetOrder方法代码示例

        public void Read(Song song, Stream stream)
        {
            if (song == null)
                throw new ArgumentNullException("song");

            if (stream == null)
                throw new ArgumentNullException("stream");

            var doc = XDocument.Load(stream);

            if (doc.Root.Name != ns + "song")
            {
                throw new SongFormatException("File is not a valid OpenLyrics song.");
            }

            //var openLyricsVersion = new Version(doc.Root.Attribute("version").Value);
            //bool versionPre08 = openLyricsVersion < new Version(0, 8);

            var prop = doc.Root.Element(ns + "properties");

            song.Title = prop.Element(ns + "titles").Elements(ns + "title").First().Value;
            var authors = prop.Elements(ns + "authors");
            song.Copyright = authors.Any() ? String.Join(", ", authors.Single().Elements(ns + "author").Select(e => e.Value)) : String.Empty;
            if (prop.Elements(ns + "publisher").Any())
            {
                var publisher = "Publisher: " + prop.Element(ns + "publisher").Value;
                song.Copyright = String.IsNullOrEmpty(song.Copyright) ? publisher : song.Copyright + "\n" + publisher;
            }

            if (prop.Elements(ns + "copyright").Any())
            {
                var copyright = prop.Element(ns + "copyright").Value;
                if (!copyright.StartsWith("©") && !copyright.StartsWith("(c)"))
                    copyright = "© " + copyright;

                song.Copyright = String.IsNullOrEmpty(song.Copyright) ? copyright : song.Copyright + "\n" + copyright;
            }

            song.CcliNumber = prop.Elements(ns + "ccliNo").Any() ? int.Parse(prop.Element(ns + "ccliNo").Value) : (int?)null;
            song.Category = prop.Elements(ns + "themes").Any() ? String.Join("; ", prop.Element(ns + "themes").Elements(ns + "theme").Select(e => e.Value)) : String.Empty;
            song.Comment = prop.Elements(ns + "comments").Any() ? String.Join("\n", prop.Element(ns + "comments").Elements(ns + "comment").Select(e => e.Value)) : String.Empty;

            if (prop.Elements(ns + "songbooks").Any())
            {
                int number;
                song.SetSources(prop.Element(ns + "songbooks").Elements(ns + "songbook").Select(e => new SongSource(song) {
                    Songbook = e.Attribute("name").Value,
                    Number = e.Attributes("entry").Any() ? (int.TryParse(e.Attribute("entry").Value, out number) ? number : (int?)null) : null
                }));
            }

            var mappings = new Dictionary<string, string>();

            foreach (var verse in doc.Root.Element(ns + "lyrics").Elements(ns + "verse"))
            {
                string originalName = verse.Attribute("name").Value;
                // add language key to part name (we don't know which one is the translation
                // and we can not automatically deal with more than 2 languages)
                string name = originalName + (verse.Attributes("lang").Any() ? " (" + verse.Attribute("lang").Value + ")" : String.Empty);

                if (!mappings.ContainsKey(originalName))
                {
                    // keep a mapping from original name to name with appended language to be used for the verse order
                    mappings.Add(originalName, name);
                }

                var slides = verse.Elements(ns + "lines").Select(lines =>
                {
                    StringBuilder str = new StringBuilder();
                    ParseLines(lines, str);
                    return new SongSlide(song) { Text = str.ToString() };
                });

                song.AddPart(new SongPart(song, name, slides));
            }

            if (prop.Elements(ns + "verseOrder").Any())
            {
                song.SetOrder(prop.Element(ns + "verseOrder").Value.Split(new char[] {' '}, StringSplitOptions.RemoveEmptyEntries).Select(n => mappings[n]));
            }
            else
            {
                // if we have no verseOrder element, use all verses from the mappings dictionary
                // (so multiple translations will appear only once)
                song.SetOrder(mappings.Values);
            }
        }

 /// <summary>
 /// Helper function to process the imported properties after the actual song content is loaded.
 /// </summary>
 /// <param name="song">The imported song.</param>
 /// <param name="properties">A dictionary with properties.</param>
 private static void PostProcessSongBeamerProperties(Song song, Dictionary<string, string> properties)
 {
     if (properties.ContainsKey("verseorder"))
     {
         song.SetOrder(properties["verseorder"].Split(','), ignoreMissing: true);
     }
     else
     {
         // if no verseorder is specified, add each part once in order
         foreach (SongPart part in song.Parts)
         {
             song.AddPartToOrder(part);
         }
     }
 }

//.........这里部分代码省略.........

            for (int l = 0; l < lines.Length; l++)
            {
                var line = lines[l];

                if (line.StartsWith("[")) // next part (or group of parts)
                {
                    if (partKey != null)
                        FinishPart(song, partKey, partLineGroups, currentLineGroup);

                    var i = line.IndexOf("]");
                    if (i < 0)
                        throw new SongFormatException("File is not a valid OpenSong song: Invalid part declaration.");

                    partKey = line.Substring(1, i - 1).Trim();
                    partLineGroups = new List<LineGroup>();
                    currentLineGroup = null;
                }
                else // not the start of a new part
                {
                    if (line.Trim() == String.Empty || line[0] == ';' || line.StartsWith("---"))
                    {
                        // ignore empty line, comments, '---' breaks (whatever they mean)
                        continue;
                    }

                    if (partKey == null) // no part has been started -> create an anonymous one
                    {
                        partKey = "Unnamed";
                        partLineGroups = new List<LineGroup>();
                    }

                    if (line[0] == '.')
                    {
                        // chord line -> always start new line group and set chords property
                        if (currentLineGroup != null)
                            partLineGroups.Add(currentLineGroup);

                        currentLineGroup = new LineGroup { Chords = line.Substring(1) };
                    }
                    else if (line[0] == ' ')
                    {
                        // lyrics line -> set lyrics to current LineGroup
                        if (currentLineGroup == null || currentLineGroup.Lines.Count == 0)
                        {
                            if (currentLineGroup == null)
                            {
                                currentLineGroup = new LineGroup();
                            }
                            currentLineGroup.Lines.Add(new Line { Text = line.Substring(1) });
                            partLineGroups.Add(currentLineGroup);
                            currentLineGroup = null;
                        }
                        else
                        {
                            throw new SongFormatException("File is not a valid OpenSong song: Expected verse number.");
                        }
                    }
                    else if (char.IsDigit(line[0]))
                    {
                        int vnum = int.Parse(line[0].ToString());

                        if (currentLineGroup == null)
                        {
                            currentLineGroup = new LineGroup();
                        }
                        else if (currentLineGroup.Lines.Count > 0 && vnum <= currentLineGroup.Lines.Last().Number)
                        {
                            partLineGroups.Add(currentLineGroup);
                            currentLineGroup = new LineGroup();
                        }

                        currentLineGroup.Lines.Add(new Line { Text = line.Substring(1), Number = vnum });
                    }
                    else
                    {
                        throw new SongFormatException("File is not a valid OpenSong song: Expected one of ' ', '.', ';' , '[0-9]'");
                    }
                }
            }

            if (partKey != null)
                FinishPart(song, partKey, partLineGroups, currentLineGroup);

            // parse order
            if (root.Elements("presentation").Any() && root.Elements("presentation").Single().Value.Trim() != String.Empty)
            {
                var val = root.Elements("presentation").Single().Value.Trim();
                var split = wordRegex.Matches(val).Cast<Match>();
                song.SetOrder(split.Select(m => GetPartName(m.Value)), ignoreMissing: true);
            }
            else
            {
                // if no order is specified, add each part once in order
                foreach (SongPart part in song.Parts)
                {
                    song.AddPartToOrder(part);
                }
            }
        }

        /// <summary>
        /// Reads the song data from a stream.
        /// </summary>
        /// <param name="song">The song.</param>
        /// <param name="stream">The stream.</param>
        public void Read(Song song, Stream stream)
        {
            XDocument doc = XDocument.Load(stream);
            XElement root = doc.Element("ppl");
            song.Title = root.Element("general").Element("title").Value;

            var formatting = root.Element("formatting");

            var video = root.Element("formatting").Element("background").Attribute("video");
            if (video != null)
            {
                song.AddBackground(new SongBackground(video.Value, true), true);
            }
            else
            {
                foreach (var bg in root.Element("formatting").Element("background").Elements("file"))
                {
                    song.AddBackground(ReadBackground(bg.Value), true);
                }
            }

            song.Formatting = new SongFormatting
            {
                MainText = ReadTextFormatting(formatting.Element("font").Element("maintext")),
                TranslationText = ReadTextFormatting(formatting.Element("font").Element("translationtext")),
                SourceText = ReadTextFormatting(formatting.Element("font").Element("sourcetext")),
                CopyrightText = ReadTextFormatting(formatting.Element("font").Element("copyrighttext")),
                TextLineSpacing = int.Parse(formatting.Element("linespacing").Element("main").Value),
                TranslationLineSpacing = int.Parse(formatting.Element("linespacing").Element("translation").Value),
                SourceBorderRight = int.Parse(formatting.Element("borders").Element("sourceright").Value),
                SourceBorderTop = int.Parse(formatting.Element("borders").Element("sourcetop").Value),
                CopyrightBorderBottom = int.Parse(formatting.Element("borders").Element("copyrightbottom").Value),
                HorizontalOrientation = (HorizontalTextOrientation)Enum.Parse(typeof(HorizontalTextOrientation), formatting.Element("textorientation").Element("horizontal").Value, true),
                VerticalOrientation = (VerticalTextOrientation)Enum.Parse(typeof(VerticalTextOrientation), formatting.Element("textorientation").Element("vertical").Value, true),
                BorderBottom = int.Parse(formatting.Element("borders").Element("mainbottom").Value),
                BorderTop = int.Parse(formatting.Element("borders").Element("maintop").Value),
                BorderLeft = int.Parse(formatting.Element("borders").Element("mainleft").Value),
                BorderRight = int.Parse(formatting.Element("borders").Element("mainright").Value),
                IsOutlineEnabled = bool.Parse(formatting.Element("font").Element("outline").Element("enabled").Value),
                OutlineColor = ParseColor(formatting.Element("font").Element("outline").Element("color").Value),
                IsShadowEnabled = bool.Parse(formatting.Element("font").Element("shadow").Element("enabled").Value),
                ShadowColor = ParseColor(formatting.Element("font").Element("shadow").Element("color").Value),
                ShadowDirection = int.Parse(formatting.Element("font").Element("shadow").Element("direction").Value),
                TranslationPosition = formatting.Element("textorientation").Element("transpos") != null ?
                    (TranslationPosition)Enum.Parse(typeof(TranslationPosition), formatting.Element("textorientation").Element("transpos").Value, true) : TranslationPosition.Inline,
                CopyrightDisplayPosition = (MetadataDisplayPosition)Enum.Parse(typeof(MetadataDisplayPosition), root.Element("information").Element("copyright").Element("position").Value, true),
                SourceDisplayPosition = (MetadataDisplayPosition)Enum.Parse(typeof(MetadataDisplayPosition), root.Element("information").Element("source").Element("position").Value, true)
            };

            var general = root.Element("general");

            if (general.Element("category") != null)
                song.Category = general.Element("category").Value;

            if (general.Element("language") != null)
                song.Language = general.Element("language").Value;

            if (general.Element("translationlanguage") != null)
                song.TranslationLanguage = general.Element("translationlanguage").Value;

            if (general.Element("comment") != null)
                song.Comment = general.Element("comment").Value;
            else
                song.Comment = String.Empty;

            int ccli;
            if (general.Element("ccli") != null && int.TryParse(general.Element("ccli").Value, out ccli))
                song.CcliNumber = ccli;
            else
                song.CcliNumber = null;

            foreach (var part in root.Element("songtext").Elements("part"))
            {
                song.AddPart(new SongPart(song,
                                part.Attribute("caption").Value,
                                from slide in part.Elements("slide")
                                select new SongSlide(song)
                                {
                                    Text = String.Join("\n", slide.Elements("line").Select(line => line.Value).ToArray())/*.Trim()*/,
                                    Translation = String.Join("\n", slide.Elements("translation").Select(line => line.Value).ToArray())/*.Trim()*/,
                                    BackgroundIndex = slide.Attribute("backgroundnr") != null ? int.Parse(slide.Attribute("backgroundnr").Value) : 0,
                                    Size = slide.Attribute("mainsize") != null ? int.Parse(slide.Attribute("mainsize").Value) : song.Formatting.MainText.Size
                                }
                            ));
            }

            song.SetOrder(from item in root.Element("order").Elements("item") select item.Value);

            song.Copyright = String.Join("\n", root.Element("information").Element("copyright").Element("text").Elements("line").Select(line => line.Value).ToArray());

            song.SetSources(root.Element("information").Element("source").Element("text").Elements("line").Select(line => line.Value));
        }