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Added generic json subtitle parser

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This commit is contained in:
Nikolaj Olsson 2017-02-11 17:02:22 +01:00
parent d1a51ad756
commit 081ab8c6b9
4 changed files with 211 additions and 2 deletions
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1
libse/LibSE.csproj
View File

@ -485,6 +485,7 @@
<Compile Include="TransportStream\SubtitleSegment.cs" />
<Compile Include="TransportStream\TransportStreamParser.cs" />
<Compile Include="TransportStream\TransportStreamSubtitle.cs" />
<Compile Include="UknownFormatImporterJson.cs" />
<Compile Include="UknownFormatImporter.cs" />
<Compile Include="Utilities.cs" />
<Compile Include="VideoInfo.cs" />

4
libse/SubtitleFormats/Json.cs
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@ -204,7 +204,7 @@ namespace Nikse.SubtitleEdit.Core.SubtitleFormats
oldStart++;
}
if (res[oldStart] == '"')
if (oldStart < res.Length && res[oldStart] == '"')
{
nextTag = res.IndexOf('"', oldStart + 1);
@ -246,7 +246,7 @@ namespace Nikse.SubtitleEdit.Core.SubtitleFormats
}
}
}
else if (res[oldStart] != '[' && res[oldStart] != ']')
else if (oldStart < res.Length && res[oldStart] != '[' && res[oldStart] != ']')
{
nextTag = res.IndexOf(',', oldStart + 1);
if (nextTag > 0)

9
libse/UknownFormatImporter.cs
View File

@ -34,7 +34,16 @@ namespace Nikse.SubtitleEdit.Core
}
if (subtitle.Paragraphs.Count > 1)
{
CleanUp(subtitle);
}
if (subtitle.Paragraphs.Count < 2)
{
var jsonSubtitle = new UknownFormatImporterJson().AutoGuessImport(lines);
if (jsonSubtitle != null && jsonSubtitle.Paragraphs.Count > 2)
subtitle = jsonSubtitle;
}
return subtitle;
}

199
libse/UknownFormatImporterJson.cs Normal file
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@ -0,0 +1,199 @@
using Nikse.SubtitleEdit.Core.SubtitleFormats;
using System;
using System.Globalization;
using System.Text;
namespace Nikse.SubtitleEdit.Core
{
public class UknownFormatImporterJson
{
public Subtitle AutoGuessImport(string[] lines)
{
var sb = new StringBuilder();
foreach (string s in lines)
sb.Append(s);
var allText = sb.ToString().Trim();
if (!allText.Contains("{", StringComparison.Ordinal))
return new Subtitle();
var subtitle1 = new Subtitle();
try
{
int count = 0;
foreach (string line in allText.Split('{', '}', '[', ']'))
{
count++;
string s = line.Trim();
if (s.Length > 6)
{
ReadParagraph(s, subtitle1);
}
if (count > 20 && subtitle1.Paragraphs.Count == 0)
break;
}
}
catch (Exception)
{
// ignored
}
var subtitle2 = new Subtitle();
try
{
int count = 0;
foreach (string line in allText.Split('{', '}'))
{
count++;
string s = line.Trim();
if (s.Length > 6)
{
ReadParagraph(s, subtitle2);
}
if (count > 20 && subtitle2.Paragraphs.Count == 0)
break;
}
}
catch (Exception)
{
// ignored
}
var subtitle3 = new Subtitle();
try
{
int count = 0;
foreach (var line in Json.ReadObjectArray(allText))
{
count++;
var s = line.Trim();
if (s.Length > 6)
{
ReadParagraph(s, subtitle3);
}
if (count > 20 && subtitle3.Paragraphs.Count == 0)
break;
}
}
catch (Exception)
{
// ignored
}
if (subtitle1.Paragraphs.Count > subtitle2.Paragraphs.Count && subtitle1.Paragraphs.Count > subtitle3.Paragraphs.Count)
{
subtitle1.Renumber();
return subtitle1;
}
if (subtitle2.Paragraphs.Count > subtitle1.Paragraphs.Count && subtitle2.Paragraphs.Count > subtitle3.Paragraphs.Count)
{
subtitle2.Renumber();
return subtitle2;
}
subtitle3.Renumber();
return subtitle3;
}
private void ReadParagraph(string s, Subtitle subtitle)
{
var start = ReadStartTag(s);
var end = ReadEndTag(s);
var duration = ReadDurationTag(s);
var text = ReadTextTag(s);
if (start != null && start.Contains(":"))
{
start = DecodeFormatToSeconds(start);
}
if (end != null && end.Contains(":"))
{
end = DecodeFormatToSeconds(end);
}
if (start != null && end != null && text != null)
{
double startSeconds;
double endSeconds;
if (double.TryParse(start, NumberStyles.AllowDecimalPoint, CultureInfo.InvariantCulture, out startSeconds) &&
double.TryParse(end, NumberStyles.AllowDecimalPoint, CultureInfo.InvariantCulture, out endSeconds))
{
subtitle.Paragraphs.Add(new Paragraph(Json.DecodeJsonText(text), startSeconds * TimeCode.BaseUnit, endSeconds * TimeCode.BaseUnit));
}
}
else if (start != null && duration != null && text != null)
{
double startSeconds;
double durationSeconds;
if (double.TryParse(start, NumberStyles.AllowDecimalPoint, CultureInfo.InvariantCulture, out startSeconds) &&
double.TryParse(duration, NumberStyles.AllowDecimalPoint, CultureInfo.InvariantCulture, out durationSeconds))
{
subtitle.Paragraphs.Add(new Paragraph(Json.DecodeJsonText(text), startSeconds * TimeCode.BaseUnit, (startSeconds + durationSeconds) * TimeCode.BaseUnit));
}
}
}
private string DecodeFormatToSeconds(string s)
{
var ms = s.Length == 11 && s[8] == ':' ? TimeCode.ParseHHMMSSFFToMilliseconds(s) : TimeCode.ParseToMilliseconds(s);
return (ms / TimeCode.BaseUnit).ToString(CultureInfo.InvariantCulture);
}
private string ReadStartTag(string s)
{
return ReadFirstMultiTag(s, new[]
{
"start",
"startTime", "start_time", "starttime",
"startMilis", "start_Milis", "startmilis",
"startMs", "start_ms", "startms",
"startMiliseconds", "start_Milisesonds", "startmiliseconds",
});
}
private string ReadEndTag(string s)
{
return ReadFirstMultiTag(s, new[]
{
"end",
"endTime", "end_time", "endtime",
"endMilis", "end_Milis", "endmilis",
"endMs", "end_ms", "startms",
"endMiliseconds", "end_Milisesonds", "endmiliseconds",
});
}
private string ReadDurationTag(string s)
{
return ReadFirstMultiTag(s, new[]
{
"duration",
"dur",
});
}
private string ReadTextTag(string s)
{
var textLines = Json.ReadArray(s, "text");
if (textLines != null && textLines.Count > 0)
{
return string.Join(Environment.NewLine, textLines);
}
return ReadFirstMultiTag(s, new[] { "text", "content" });
}
private string ReadFirstMultiTag(string s, string[] tags)
{
foreach (var tag in tags)
{
var res = Json.ReadTag(s, tag);
if (!string.IsNullOrEmpty(res))
return res;
}
return null;
}
}
}