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UsfmVerseTextUpdater.cs
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UsfmVerseTextUpdater.cs
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using System;
using System.Collections.Generic;
using System.Linq;
using SIL.Scripture;
namespace SIL.Machine.Corpora
{
public class UsfmVerseTextUpdater : UsfmParserHandlerBase
{
private readonly IReadOnlyList<(IReadOnlyList<VerseRef>, string)> _rows;
private readonly List<UsfmToken> _tokens;
private readonly string _idText;
private readonly bool _stripAllText;
private int _rowIndex;
private int _tokenIndex;
private bool _replaceText;
public UsfmVerseTextUpdater(
IReadOnlyList<(IReadOnlyList<VerseRef>, string)> rows = null,
string idText = null,
bool stripAllText = false
)
{
_rows = rows ?? Array.Empty<(IReadOnlyList<VerseRef>, string)>();
_tokens = new List<UsfmToken>();
_idText = idText;
_stripAllText = stripAllText;
}
public IReadOnlyList<UsfmToken> Tokens => _tokens;
public override void StartBook(UsfmParserState state, string marker, string code)
{
CollectTokens(state);
if (_idText != null)
{
_tokens.Add(new UsfmToken(_idText + " "));
_replaceText = true;
}
}
public override void EndBook(UsfmParserState state, string marker)
{
_replaceText = false;
}
public override void StartPara(
UsfmParserState state,
string marker,
bool unknown,
IReadOnlyList<UsfmAttribute> attributes
)
{
if (!state.IsVersePara)
_replaceText = false;
CollectTokens(state);
}
public override void StartRow(UsfmParserState state, string marker)
{
CollectTokens(state);
}
public override void StartCell(UsfmParserState state, string marker, string align, int colspan)
{
CollectTokens(state);
}
public override void EndCell(UsfmParserState state, string marker)
{
CollectTokens(state);
}
public override void StartSidebar(UsfmParserState state, string marker, string category)
{
_replaceText = false;
CollectTokens(state);
}
public override void EndSidebar(UsfmParserState state, string marker, bool closed)
{
_replaceText = false;
if (closed)
CollectTokens(state);
}
public override void Chapter(
UsfmParserState state,
string number,
string marker,
string altNumber,
string pubNumber
)
{
_replaceText = false;
CollectTokens(state);
}
public override void Milestone(
UsfmParserState state,
string marker,
bool startMilestone,
IReadOnlyList<UsfmAttribute> attributes
)
{
_replaceText = false;
CollectTokens(state);
}
public override void Verse(
UsfmParserState state,
string number,
string marker,
string altNumber,
string pubNumber
)
{
_replaceText = false;
CollectTokens(state);
while (_rowIndex < _rows.Count)
{
var (verseRefs, text) = _rows[_rowIndex];
bool stop = false;
foreach (VerseRef verseRef in verseRefs)
{
int compare = verseRef.CompareTo(state.VerseRef, compareAllVerses: true);
if (compare == 0)
{
_tokens.Add(new UsfmToken(text + " "));
_replaceText = true;
break;
}
else
{
if (state.VerseRef.AllVerses().Any(v => v.Equals(verseRef)))
{
_tokens.Add(new UsfmToken(text + " "));
_replaceText = true;
break;
}
if (compare > 0)
{
stop = true;
break;
}
}
}
if (stop)
break;
else
_rowIndex++;
}
}
public override void StartChar(
UsfmParserState state,
string markerWithoutPlus,
bool unknown,
IReadOnlyList<UsfmAttribute> attributes
)
{
// strip out char-style markers in verses that are being replaced
if (_stripAllText || (_replaceText && state.IsVersePara))
SkipTokens(state);
else
CollectTokens(state);
}
public override void EndChar(
UsfmParserState state,
string marker,
IReadOnlyList<UsfmAttribute> attributes,
bool closed
)
{
// strip out char-style markers in verses that are being replaced
if (closed && (_stripAllText || (_replaceText && state.IsVersePara)))
SkipTokens(state);
}
public override void StartNote(UsfmParserState state, string marker, string caller, string category)
{
// strip out notes in verses that are being replaced
if (_stripAllText || (_replaceText && state.IsVersePara))
SkipTokens(state);
else
CollectTokens(state);
}
public override void EndNote(UsfmParserState state, string marker, bool closed)
{
// strip out notes in verses that are being replaced
if (closed && (_stripAllText || (_replaceText && state.IsVersePara)))
SkipTokens(state);
}
public override void Ref(UsfmParserState state, string marker, string display, string target)
{
// strip out ref in verses that are being replaced
if (_stripAllText || (_replaceText && state.IsVersePara))
SkipTokens(state);
else
CollectTokens(state);
}
public override void Text(UsfmParserState state, string text)
{
// strip out text in verses that are being replaced
if (_stripAllText || (_replaceText && (state.IsVersePara || state.ParaTag.Marker == "id")))
SkipTokens(state);
else
CollectTokens(state);
}
public override void OptBreak(UsfmParserState state)
{
// strip out optbreaks in verses that are being replaced
if (_stripAllText || (_replaceText && state.IsVersePara))
SkipTokens(state);
else
CollectTokens(state);
}
public override void Unmatched(UsfmParserState state, string marker)
{
if (!state.IsVersePara)
_replaceText = false;
CollectTokens(state);
}
public string GetUsfm(string stylesheetFileName = "usfm.sty")
{
return GetUsfm(new UsfmStylesheet(stylesheetFileName));
}
public string GetUsfm(UsfmStylesheet stylesheet)
{
var tokenizer = new UsfmTokenizer(stylesheet);
return tokenizer.Detokenize(_tokens);
}
private void CollectTokens(UsfmParserState state)
{
while (_tokenIndex <= state.Index + state.SpecialTokenCount)
{
_tokens.Add(state.Tokens[_tokenIndex]);
_tokenIndex++;
}
}
private void SkipTokens(UsfmParserState state)
{
_tokenIndex = state.Index + 1 + state.SpecialTokenCount;
}
}
}