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QWERTYkez.OpenXmlProcessors/QWERTYkez.WordProcessor/MultiReplace.cs
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2026-08-10 15:23:45 +07:00

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namespace QWERTYkez.WordProcessor;
/// <summary>
/// Выполняет замену всех вхождений ключей из словаря на соответствующие массивы значений.
/// Поддерживает разрывы страниц и смену ориентации (альбомная/книжная) через <see cref="ReplaceItem"/>.
/// </summary>
internal static class MultiReplaceExt
{
// ---------- ПУБЛИЧНЫЕ МЕТОДЫ (для Body) ----------
#region Body.Replace с одним ключом
internal static void Replace(this Body body, string oldValue, IEnumerable<string> newValues, StringComparison comparisonType)
{
if (body is null || string.IsNullOrEmpty(oldValue) || newValues is null) return;
var dict = new Dictionary<string, IEnumerable<string>> { { oldValue, newValues } };
body.Replace(dict, comparisonType);
}
internal static void Replace(this Body body, string oldValue, IEnumerable<ReplaceItem> newValues, StringComparison comparisonType)
{
if (body is null || string.IsNullOrEmpty(oldValue) || newValues is null) return;
var dict = new Dictionary<string, IEnumerable<ReplaceItem>> { { oldValue, newValues } };
body.Replace(dict, comparisonType);
}
#endregion
#region Body.Replace со словарём массивов
internal static void Replace(this Body body, IEnumerable<KeyValuePair<string, IEnumerable<string>>> replacements, StringComparison comparisonType)
{
if (body is null || replacements is null) return;
var paragraphs = body.Elements<Paragraph>().ToList();
for (int i = paragraphs.Count - 1; i >= 0; i--)
{
var p = paragraphs[i];
if (p?.Parent is null) continue;
var newParas = ProcessMultiReplacements(p, replacements, null, comparisonType);
if (newParas is not null && newParas.Count > 0)
ParagraphReplacer.ReplaceParagraph(p, newParas);
}
}
internal static void Replace(this Body body, IEnumerable<KeyValuePair<string, IEnumerable<ReplaceItem>>> replacements, StringComparison comparisonType)
{
if (body is null || replacements is null) return;
var paragraphs = body.Elements<Paragraph>().ToList();
for (int i = paragraphs.Count - 1; i >= 0; i--)
{
var p = paragraphs[i];
if (p?.Parent is null) continue;
var newParas = ProcessMultiReplacements(p, null, replacements, comparisonType);
if (newParas is not null && newParas.Count > 0)
ParagraphReplacer.ReplaceParagraph(p, newParas);
}
}
#endregion
#region Paragraph.ReplaceWithMultiple (один ключ)
internal static bool ReplaceWithMultiple(this Paragraph? paragraph, string oldValue, IEnumerable<string> newValues, StringComparison comparisonType)
{
if (paragraph is null || string.IsNullOrEmpty(oldValue) || newValues is null || newValues.Count() == 0)
return false;
var dict = new Dictionary<string, IEnumerable<string>> { { oldValue, newValues } };
var newParas = ProcessMultiReplacements(paragraph, dict, null, comparisonType);
if (newParas is null || newParas.Count == 0) return false;
if (paragraph.Parent is not null)
{
ParagraphReplacer.ReplaceParagraph(paragraph, newParas);
return true;
}
return false;
}
internal static bool ReplaceWithMultiple(this Paragraph? paragraph, string oldValue, IEnumerable<ReplaceItem> newValues, StringComparison comparisonType)
{
if (paragraph is null || string.IsNullOrEmpty(oldValue) || newValues is null || newValues.Count() == 0)
return false;
var dict = new Dictionary<string, IEnumerable<ReplaceItem>> { { oldValue, newValues } };
var newParas = ProcessMultiReplacements(paragraph, null, dict, comparisonType);
if (newParas is null || newParas.Count == 0) return false;
if (paragraph.Parent is not null)
{
ParagraphReplacer.ReplaceParagraph(paragraph, newParas);
return true;
}
return false;
}
#endregion
#region ProcessParagraphWithAllReplacements (для обратной совместимости)
internal static List<Paragraph>? ProcessParagraphWithAllReplacements(
Paragraph paragraph,
IEnumerable<KeyValuePair<string, IEnumerable<string>>> replacements,
StringComparison comparisonType)
{
return ProcessMultiReplacements(paragraph, replacements, null, comparisonType);
}
internal static List<Paragraph>? ProcessParagraphWithAllReplacements(
Paragraph paragraph,
IEnumerable<KeyValuePair<string, IEnumerable<ReplaceItem>>> replacements,
StringComparison comparisonType)
{
return ProcessMultiReplacements(paragraph, null, replacements, comparisonType);
}
internal static List<Paragraph>? ProcessParagraphWithAllReplacements(
Paragraph paragraph,
IEnumerable<KeyValuePair<string, string>> replacements,
StringComparison comparisonType)
{
Dictionary<string, IEnumerable<string>> dict = replacements
.Where(kvp => !string.IsNullOrEmpty(kvp.Key))
.ToDictionary(kvp => kvp.Key, kvp => (IEnumerable<string>)[kvp.Value]);
return ProcessMultiReplacements(paragraph, dict, null, comparisonType);
}
#endregion
// ---------- ВНУТРЕННЯЯ РЕАЛИЗАЦИЯ ----------
private class MatchDefinition(string key, IEnumerable<ReplaceItem> values)
{
public string Key { get; } = key;
public IEnumerable<ReplaceItem> Values { get; } = values;
}
private class Match
{
public MatchDefinition Definition { get; set; } = null!;
public int Start { get; set; }
public int End { get; set; }
}
private class RunSegment(Run run, string text, int start, int end)
{
public Run Run { get; } = run;
public string Text { get; } = text;
public int Start { get; } = start;
public int End { get; } = end;
}
private class ParagraphStructure(string fullText, List<RunSegment> segments)
{
public string FullText { get; } = fullText;
public List<RunSegment> Segments { get; } = segments;
}
private static ParagraphStructure AnalyzeParagraphStructure(List<Run> runs)
{
var segments = new List<RunSegment>();
var sb = new StringBuilder();
int pos = 0;
foreach (var run in runs)
{
string text = GetRunText(run);
if (string.IsNullOrEmpty(text)) continue;
segments.Add(new RunSegment(run, text, pos, pos + text.Length));
sb.Append(text);
pos += text.Length;
}
return new ParagraphStructure(sb.ToString(), segments);
}
private static string GetRunText(Run run)
{
var sb = new StringBuilder();
foreach (var text in run.Elements<Text>())
sb.Append(text.Text);
return sb.ToString();
}
/// <summary>Клонирует параграф, удаляя все SectionProperties и PageBreakBefore.</summary>
private static Paragraph CloneParagraphWithoutSection(Paragraph original)
{
var newPara = new Paragraph();
if (original.ParagraphProperties is not null)
{
var newProps = new ParagraphProperties();
foreach (var child in original.ParagraphProperties.ChildElements)
{
if (child is not SectionProperties && child is not PageBreakBefore)
newProps.AppendChild(child.CloneNode(true));
}
newPara.ParagraphProperties = newProps;
}
return newPara;
}
private static Paragraph? BuildRemainderParagraph(Paragraph original, ParagraphStructure structure, int position)
{
if (position >= structure.FullText.Length) return null;
var newPara = CloneParagraphWithoutSection(original);
foreach (var seg in structure.Segments)
{
if (seg.End <= position) continue;
if (seg.Start >= position)
{
newPara.AppendChild(seg.Run.CloneNode(true));
}
else if (seg.End > position)
{
var runClone = (Run)seg.Run.CloneNode(true);
foreach (var t in runClone.Elements<Text>().ToList()) t.Remove();
int offset = position - seg.Start;
string newText = seg.Text.Substring(offset);
runClone.AppendChild(new Text(newText));
newPara.AppendChild(runClone);
}
}
foreach (var run in newPara.Descendants<Run>().Where(r => !r.HasChildren).ToList())
run.Remove();
if (!newPara.ChildElements.OfType<Run>().Any() && newPara.ParagraphProperties is null)
return null;
return newPara;
}
private static void InsertFormattedRun(Paragraph para, string text, ParagraphStructure structure, int position)
{
var seg = structure.Segments.FirstOrDefault(s => position >= s.Start && position < s.End);
if (seg is null) return;
var textRun = new Run();
if (seg.Run.RunProperties is not null)
textRun.RunProperties = (RunProperties)seg.Run.RunProperties.CloneNode(true);
textRun.AppendChild(new Text(text));
para.AppendChild(textRun);
}
private static void AddSectionProperties(
Paragraph para,
BreakType splitValue,
bool addPageSize,
SectionProperties sourceSection,
SectionProperties portraitSection)
{
if (para is null) return;
if (para.ParagraphProperties is not null)
{
var sections = para.ParagraphProperties.Elements<SectionProperties>().ToList();
foreach (var sec in sections) sec.Remove();
var pageBreaks = para.ParagraphProperties.Elements<PageBreakBefore>().ToList();
foreach (var pb in pageBreaks) pb.Remove();
}
para.ParagraphProperties ??= new ParagraphProperties();
var sectionProps = new SectionProperties();
var pageSizeClone = CreatePageSizeClone(addPageSize, splitValue, sourceSection, portraitSection);
if (pageSizeClone is not null)
sectionProps.AppendChild(pageSizeClone);
var marginClone = CreateMarginClone(addPageSize, splitValue, sourceSection, portraitSection);
if (marginClone is not null)
sectionProps.AppendChild(marginClone);
sectionProps.AppendChild(new SectionType { Val = SectionMarkValues.NextPage });
para.ParagraphProperties.AppendChild(sectionProps);
}
private static PageSize? CreatePageSizeClone(
bool addPageSize,
BreakType splitValue,
SectionProperties sourceSection,
SectionProperties portraitSection)
{
if (!addPageSize && splitValue != BreakType.NewLandscapeSection)
return null;
SectionProperties? sizeSource = addPageSize ? sourceSection : portraitSection;
var sourcePageSize = sizeSource?.GetFirstChild<PageSize>()
?? portraitSection.GetFirstChild<PageSize>()
?? sourceSection.GetFirstChild<PageSize>();
if (sourcePageSize is null)
return null;
var clone = (PageSize)sourcePageSize.CloneNode(true);
bool sourceIsLandscape = clone.Orient?.Value == PageOrientationValues.Landscape ||
(clone.Width?.Value > clone.Height?.Value);
bool targetIsLandscape = addPageSize && splitValue == BreakType.NewLandscapeSection;
if (targetIsLandscape && !sourceIsLandscape)
{
clone.SwapValues();
clone.Orient = PageOrientationValues.Landscape;
}
else if (!targetIsLandscape && sourceIsLandscape)
{
clone.SwapValues();
clone.Orient = addPageSize ? PageOrientationValues.Portrait : null;
}
else
{
clone.Orient = targetIsLandscape ? PageOrientationValues.Landscape :
addPageSize ? PageOrientationValues.Portrait : null;
}
return clone;
}
private static PageMargin? CreateMarginClone(
bool addPageSize,
BreakType splitValue,
SectionProperties sourceSection,
SectionProperties portraitSection)
{
PageMargin? marginToUse = null;
if (addPageSize)
{
var sourceMargin = sourceSection?.GetFirstChild<PageMargin>()
?? portraitSection?.GetFirstChild<PageMargin>();
if (sourceMargin is not null)
{
var clone = (PageMargin)sourceMargin.CloneNode(true);
var sourceOrient = sourceSection?.GetFirstChild<PageSize>()?.Orient;
bool sourceIsLandscape = sourceOrient?.Value == PageOrientationValues.Landscape ||
(sourceSection?.GetFirstChild<PageSize>()?.Width?.Value > sourceSection?.GetFirstChild<PageSize>()?.Height?.Value);
if ((splitValue == BreakType.NewLandscapeSection && !sourceIsLandscape) ||
(splitValue == BreakType.NewPortraitSection && sourceIsLandscape))
{
clone.SwapBottomRight();
}
marginToUse = clone;
}
}
else
{
var portraitMargin = portraitSection?.GetFirstChild<PageMargin>();
if (portraitMargin is not null)
marginToUse = (PageMargin)portraitMargin.CloneNode(true);
}
return marginToUse;
}
private static void EnsureBodyLandscapeSection(
Body body,
SectionProperties sourceSection,
bool sectionChangeInsideGroup,
BreakType? lastOrientation)
{
if (body is null || sourceSection is null) return;
var sourcePageSize = sourceSection.GetFirstChild<PageSize>();
if (sourcePageSize is null) return;
bool sourceIsLandscape = sourcePageSize.Orient?.Value == PageOrientationValues.Landscape ||
(sourcePageSize.Width?.Value > sourcePageSize.Height?.Value);
bool lastIsPortrait = lastOrientation.HasValue && lastOrientation.Value == BreakType.NewPortraitSection;
if (!(sourceIsLandscape && sectionChangeInsideGroup && lastIsPortrait))
return;
foreach (var bodySec in body.Elements<SectionProperties>())
{
var ps = bodySec.GetFirstChild<PageSize>();
if (ps is not null && ps.Orient?.Value == PageOrientationValues.Landscape)
return;
}
var bodySection = new SectionProperties();
var pageSizeClone = (PageSize)sourcePageSize.CloneNode(true);
if (pageSizeClone.Orient?.Value != PageOrientationValues.Landscape)
{
pageSizeClone.SwapValues();
pageSizeClone.Orient = PageOrientationValues.Landscape;
}
bodySection.AppendChild(pageSizeClone);
var sourceMargin = sourceSection.GetFirstChild<PageMargin>();
if (sourceMargin is not null)
{
var marginClone = (PageMargin)sourceMargin.CloneNode(true);
if (sourceSection.GetFirstChild<PageSize>()?.Orient?.Value != PageOrientationValues.Landscape)
marginClone.SwapBottomRight();
bodySection.AppendChild(marginClone);
}
bodySection.AppendChild(new SectionType { Val = SectionMarkValues.NextPage });
body.AppendChild(bodySection);
}
private static void MergeParagraph(Paragraph target, Paragraph source)
{
foreach (var child in source.ChildElements)
target.AppendChild(child.CloneNode(true));
}
// ---------- ОСНОВНОЙ АЛГОРИТМ ----------
/// <summary>Основной алгоритм множественной замены с поддержкой разрывов и смены ориентации.</summary>
private static List<Paragraph>? ProcessMultiReplacements(
Paragraph original,
IEnumerable<KeyValuePair<string, IEnumerable<string>>>? stringReplacements,
IEnumerable<KeyValuePair<string, IEnumerable<ReplaceItem>>>? itemReplacements,
StringComparison comparisonType)
{
var body = original.Ancestors<Body>().FirstOrDefault();
// Определяем, есть ли пустые параграфы перед original
bool hasEmptyParagraphsBefore = false;
var prevPara = original.PreviousSibling<Paragraph>();
while (prevPara is not null)
{
if (!string.IsNullOrEmpty(prevPara.InnerText))
break;
hasEmptyParagraphsBefore = true;
prevPara = prevPara.PreviousSibling<Paragraph>();
}
// 1. Сбор определений
var definitions = new List<MatchDefinition>();
if (stringReplacements is not null)
{
foreach (var kvp in stringReplacements)
{
if (string.IsNullOrEmpty(kvp.Key) || kvp.Value is null || kvp.Value.Count() == 0) continue;
var items = kvp.Value.Select(v => new ReplaceItem(v));
definitions.Add(new MatchDefinition(kvp.Key, items));
}
}
if (itemReplacements is not null)
{
foreach (var kvp in itemReplacements)
{
if (string.IsNullOrEmpty(kvp.Key) || kvp.Value is null || kvp.Value.Count() == 0) continue;
definitions.Add(new MatchDefinition(kvp.Key, kvp.Value));
}
}
if (definitions.Count == 0) return null;
// 2. Анализ структуры параграфа
var runs = original.Descendants<Run>().ToList();
if (runs.Count == 0) return null;
var structure = AnalyzeParagraphStructure(runs);
string fullText = structure.FullText;
if (fullText.Length == 0) return null;
// 3. Поиск всех вхождений
var matches = new List<Match>();
foreach (var def in definitions)
{
int pos = 0;
while ((pos = fullText.IndexOf(def.Key, pos, comparisonType)) != -1)
{
matches.Add(new Match
{
Definition = def,
Start = pos,
End = pos + def.Key.Length
});
pos += def.Key.Length;
}
}
if (matches.Count == 0) return null;
matches.Sort((a, b) => a.Start.CompareTo(b.Start));
// 4. Получаем исходную секцию для копирования (из original или из документа)
SectionProperties? sourceSection = original.ParagraphProperties?.GetFirstChild<SectionProperties>()?.CloneNode(true) as SectionProperties;
if (sourceSection is null && body is not null)
{
sourceSection = body.Elements<SectionProperties>().LastOrDefault()?.CloneNode(true) as SectionProperties;
}
sourceSection ??= new SectionProperties();
SectionProperties? portraitSection = null;
if (body is not null)
{
portraitSection = body.Elements<SectionProperties>().FirstOrDefault()?.CloneNode(true) as SectionProperties;
}
portraitSection ??= new SectionProperties();
// 5. Построение результата
var resultParas = new List<Paragraph>();
Paragraph? currentPara = null;
int currentPos = 0;
bool sectionChangeInsideGroup = false;
BreakType? lastOrientation = null;
// Состояние обработки группы
bool pageBreakBeforeNext = false;
BreakType? pendingOrientation = null;
bool firstSplitMarkerHandled = false;
int textCount = 0;
Paragraph? lastTextPara = null;
bool emptyParagraphCreated = false;
for (int i = 0; i < matches.Count; i++)
{
var match = matches[i];
// Текст перед совпадением
if (currentPos < match.Start)
{
var beforePara = CloneParagraphWithoutSection(original);
foreach (var seg in structure.Segments)
{
if (seg.End <= currentPos) continue;
if (seg.Start >= match.Start) break;
if (seg.Start >= currentPos && seg.End <= match.Start)
{
beforePara.AppendChild(seg.Run.CloneNode(true));
}
else if (seg.Start < match.Start && seg.End > currentPos)
{
int startOffset = Math.Max(0, currentPos - seg.Start);
int endOffset = Math.Min(seg.Text.Length, match.Start - seg.Start);
var runClone = (Run)seg.Run.CloneNode(true);
foreach (var t in runClone.Elements<Text>().ToList()) t.Remove();
string textPart = seg.Text.Substring(startOffset, endOffset - startOffset);
runClone.AppendChild(new Text(textPart));
beforePara.AppendChild(runClone);
}
}
if (beforePara.ChildElements.OfType<Run>().Any())
{
resultParas.Add(beforePara);
currentPara = beforePara;
lastTextPara = beforePara;
}
}
var values = match.Definition.Values.ToList();
if (values.Count == 0) continue;
// Сбрасываем флаги для новой группы
pageBreakBeforeNext = false;
pendingOrientation = null;
firstSplitMarkerHandled = false;
textCount = 0;
lastTextPara = null;
emptyParagraphCreated = false;
foreach (var item in values)
{
if (!string.IsNullOrEmpty(item.Text))
{
ProcessTextItem(
item.Text,
ref pendingOrientation,
ref currentPara,
ref lastTextPara,
ref textCount,
ref pageBreakBeforeNext,
ref sectionChangeInsideGroup,
ref lastOrientation,
original,
structure,
match.Start,
sourceSection,
portraitSection,
resultParas);
}
else if (item.BreakValue.HasValue)
{
ProcessBreakItem(
item.BreakValue.Value,
ref pendingOrientation,
ref currentPara,
ref lastTextPara,
ref pageBreakBeforeNext,
ref firstSplitMarkerHandled,
ref sectionChangeInsideGroup,
ref lastOrientation,
ref textCount,
ref emptyParagraphCreated,
hasEmptyParagraphsBefore,
original,
sourceSection,
portraitSection,
resultParas);
}
}
// Закрываем секцию, если была смена
if (sectionChangeInsideGroup && lastOrientation.HasValue && currentPara is not null)
{
if (currentPara.ParagraphProperties?.GetFirstChild<SectionProperties>() is null)
{
bool addPageSize = (lastOrientation.Value == BreakType.NewLandscapeSection);
AddSectionProperties(currentPara, lastOrientation.Value, addPageSize, sourceSection, portraitSection);
}
}
// Если внутри группы не было смены, но есть sourceSection с PageSize,
// копируем её в последний параграф группы (если он не имеет секции)
if (!sectionChangeInsideGroup && currentPara is not null)
{
var sourcePageSize = sourceSection.GetFirstChild<PageSize>();
if (sourcePageSize is not null)
{
if (currentPara.ParagraphProperties?.GetFirstChild<SectionProperties>() is null)
{
currentPara.ParagraphProperties ??= new ParagraphProperties();
currentPara.ParagraphProperties.AppendChild(sourceSection.CloneNode(true));
}
}
}
EnsureBodyLandscapeSection(body!, sourceSection, sectionChangeInsideGroup, lastOrientation);
currentPos = match.End;
}
// 6. Обработка остатка текста
if (currentPos < fullText.Length)
{
var remainderPara = BuildRemainderParagraph(original, structure, currentPos);
if (remainderPara is not null)
{
// Если есть отложенная ориентация — применяем её
if (pendingOrientation.HasValue)
{
var breakRun = new Run(new Break { Type = BreakValues.Page });
remainderPara.InsertAt(breakRun, 0);
bool addPageSize = (pendingOrientation.Value == BreakType.NewLandscapeSection);
AddSectionProperties(remainderPara, pendingOrientation.Value, addPageSize, sourceSection, portraitSection);
pendingOrientation = null;
}
else if (sectionChangeInsideGroup && lastOrientation.HasValue)
{
var breakRun = new Run(new Break { Type = BreakValues.Page });
remainderPara.InsertAt(breakRun, 0);
bool addPageSize = (lastOrientation.Value == BreakType.NewLandscapeSection);
AddSectionProperties(remainderPara, lastOrientation.Value, addPageSize, sourceSection, portraitSection);
}
else
{
// Если нет смены, но есть sourceSection с PageSize, копируем её в остаток
var sourcePageSize = sourceSection.GetFirstChild<PageSize>();
if (sourcePageSize is not null)
{
remainderPara.ParagraphProperties ??= new ParagraphProperties();
remainderPara.ParagraphProperties.AppendChild(sourceSection.CloneNode(true));
}
}
resultParas.Add(remainderPara);
}
}
// 7. Очистка пустых параграфов
for (int i = resultParas.Count - 1; i >= 0; i--)
{
var p = resultParas[i];
if (!p.ChildElements.OfType<Run>().Any() && p.ParagraphProperties is null)
resultParas.RemoveAt(i);
}
return resultParas.Count > 0 ? resultParas : null;
}
// ---------- ВСПОМОГАТЕЛЬНЫЕ МЕТОДЫ ДЛЯ ОБРАБОТКИ ГРУПП ----------
private static void ProcessTextItem(
string text,
ref BreakType? pendingOrientation,
ref Paragraph? currentPara,
ref Paragraph? lastTextPara,
ref int textCount,
ref bool pageBreakBeforeNext,
ref bool sectionChangeInsideGroup,
ref BreakType? lastOrientation,
Paragraph original,
ParagraphStructure structure,
int position,
SectionProperties sourceSection,
SectionProperties portraitSection,
List<Paragraph> resultParas)
{
if (pendingOrientation.HasValue)
{
var newPara = CloneParagraphWithoutSection(original);
resultParas.Add(newPara);
currentPara = newPara;
bool addPageSize = (pendingOrientation.Value == BreakType.NewLandscapeSection);
AddSectionProperties(currentPara, pendingOrientation.Value, addPageSize, sourceSection, portraitSection);
lastOrientation = pendingOrientation;
sectionChangeInsideGroup = true;
pendingOrientation = null;
textCount++;
lastTextPara = currentPara;
if (pageBreakBeforeNext)
{
var breakRun = new Run(new Break { Type = BreakValues.Page });
currentPara.InsertAt(breakRun, 0);
pageBreakBeforeNext = false;
}
InsertFormattedRun(currentPara, text, structure, position);
}
else
{
var newPara = CloneParagraphWithoutSection(original);
resultParas.Add(newPara);
currentPara = newPara;
textCount++;
lastTextPara = currentPara;
if (pageBreakBeforeNext)
{
var breakRun = new Run(new Break { Type = BreakValues.Page });
currentPara.InsertAt(breakRun, 0);
pageBreakBeforeNext = false;
}
InsertFormattedRun(currentPara, text, structure, position);
}
}
private static void ProcessBreakItem(
BreakType breakType,
ref BreakType? pendingOrientation,
ref Paragraph? currentPara,
ref Paragraph? lastTextPara,
ref bool pageBreakBeforeNext,
ref bool firstSplitMarkerHandled,
ref bool sectionChangeInsideGroup,
ref BreakType? lastOrientation,
ref int textCount,
ref bool emptyParagraphCreated,
bool hasEmptyParagraphsBefore,
Paragraph original,
SectionProperties sourceSection,
SectionProperties portraitSection,
List<Paragraph> resultParas)
{
if (breakType == BreakType.PageBreak)
{
if (currentPara is not null)
{
var breakRun = new Run(new Break { Type = BreakValues.Page });
var lastRun = currentPara.Descendants<Run>().LastOrDefault();
if (lastRun?.RunProperties is not null)
breakRun.RunProperties = (RunProperties)lastRun.RunProperties.CloneNode(true);
currentPara.AppendChild(breakRun);
}
else
{
pageBreakBeforeNext = true;
}
}
else if (breakType == BreakType.NewLandscapeSection || breakType == BreakType.NewPortraitSection)
{
if (currentPara is null && hasEmptyParagraphsBefore && !firstSplitMarkerHandled)
{
var newPara = CloneParagraphWithoutSection(original);
resultParas.Add(newPara);
currentPara = newPara;
AddSectionProperties(currentPara, breakType, false, sourceSection, portraitSection);
lastOrientation = breakType;
sectionChangeInsideGroup = true;
firstSplitMarkerHandled = true;
emptyParagraphCreated = true;
pendingOrientation = null;
textCount = 0;
lastTextPara = null;
}
else if (currentPara is null && !hasEmptyParagraphsBefore && !firstSplitMarkerHandled)
{
pendingOrientation = breakType;
firstSplitMarkerHandled = true;
}
else if (currentPara is not null)
{
if (!firstSplitMarkerHandled)
{
if (lastTextPara is not null)
{
if (lastTextPara.ParagraphProperties?.GetFirstChild<SectionProperties>() is null)
{
lastTextPara.ParagraphProperties ??= new ParagraphProperties();
var sourcePageSize = sourceSection.GetFirstChild<PageSize>();
if (sourcePageSize is not null)
{
lastTextPara.ParagraphProperties.AppendChild(sourceSection.CloneNode(true));
}
else
{
AddSectionProperties(lastTextPara, breakType, false, sourceSection, portraitSection);
}
lastOrientation = breakType;
sectionChangeInsideGroup = true;
}
firstSplitMarkerHandled = true;
pendingOrientation = null;
}
else
{
AddSectionProperties(currentPara, breakType, false, sourceSection, portraitSection);
lastOrientation = breakType;
sectionChangeInsideGroup = true;
firstSplitMarkerHandled = true;
pendingOrientation = null;
}
}
else
{
pendingOrientation = breakType;
}
}
}
}
}