private LyricItemCollection InternalBuildLyricObject(LyricItemCollection lyric, string sourceText)
{
var regex = new Regex(@"\[\d+:\d+.\d+\].+\n?");
foreach (Match match in regex.Matches(sourceText))
{
lyric.Add(new LyricItem(match.Value));
}
return(lyric);
}
public LyricItemCollection Build(string sourceLyric)
{
var lyric = new LyricItemCollection(_options.Provider.Lyric.Config);
if (string.IsNullOrEmpty(sourceLyric))
{
return(lyric);
}
InternalBuildLyricObject(lyric, sourceLyric);
return(lyric);
}
public LyricItemCollection Build(string sourceLyric, string translationLyric)
{
var lyric = new LyricItemCollection(_options.Provider.Lyric.Config);
if (string.IsNullOrEmpty(sourceLyric))
{
return(lyric);
}
lyric = InternalBuildLyricObject(lyric, sourceLyric);
if (_options.Provider.Lyric.Config.IsEnableTranslation && !string.IsNullOrEmpty(translationLyric))
{
var translatedLyric = InternalBuildLyricObject(new LyricItemCollection(_options.Provider.Lyric.Config), translationLyric);
return(lyric + translatedLyric);
}
return(lyric);
}
/// <summary>
/// 根据歌词集合构建一个索引状态字典。
/// </summary>
/// <remarks>
/// 这个索引字典用于标识每个索引的歌词是否被处理，为 True 则为已处理，为 False 为未处理。
/// </remarks>
/// <param name="items">等待构建的歌词集合实例。</param>
private static Dictionary <int, bool> BuildMarkDictionary(LyricItemCollection items)
{
return(items
.Select((item, index) => new { index, item })
.ToDictionary(item => item.index, item => false));
}
public static LyricItemCollection operator +(LyricItemCollection left, LyricItemCollection right)
{
if (right.IsPruneMusic)
{
return(left);
}
var option = left.Option;
var newCollection = new LyricItemCollection(option);
var indexDiff = left.Count - right.Count;
if (!option.IsOneLine)
{
left.ForEach(item => newCollection.Add(item));
right.ForEach(item => newCollection.Add(item));
newCollection.Sort();
return(newCollection);
}
// 如果索引相等，直接根据索引快速匹配构建。
if (indexDiff == 0)
{
newCollection.AddRange(left.Select((t, index) => t + right[index]));
return(newCollection);
}
// 首先按照时间轴进行合并。
var leftMarkDict = BuildMarkDictionary(left);
var rightMarkDict = BuildMarkDictionary(right);
for (var leftIndex = 0; leftIndex < left.Count; leftIndex++)
{
var rightItem = right.Find(lyric => Math.Abs(lyric.SortScore - left[leftIndex].SortScore) < 0.001);
if (rightItem != null)
{
newCollection.Add(left[leftIndex] + rightItem);
var rightIndex = right.FindIndex(item => item == rightItem);
rightMarkDict[rightIndex] = true;
}
else
{
newCollection.Add(left[leftIndex]);
}
leftMarkDict[leftIndex] = true;
}
// 遍历未处理的歌词项，将其添加到返回集合当中。
var leftWaitProcessIndex = leftMarkDict
.Where(item => !item.Value)
.Select(pair => pair.Key);
var rightWaitProcessIndex = rightMarkDict
.Where(item => !item.Value)
.Select(pair => pair.Key);
leftWaitProcessIndex.Foreach(index => newCollection.Add(left[index]));
rightWaitProcessIndex.Foreach(index => newCollection.Add(right[index]));
newCollection.Sort();
return(newCollection);
}