From d6ac5bf56d40512ac0634d7a5bee6f7328b7d41f Mon Sep 17 00:00:00 2001
From: nyamatongwe <devnull@localhost>
Date: Sat, 19 Jan 2013 11:40:47 +1100
Subject: Support the three Unicode line ends NEL, LS, and PS in CellBuffer,
 Document, Editor and the message interface. Will only be turned on for lexers
 that support Unicode line ends.

---
 src/Document.cxx | 34 +++++++++++++++++++++++++++++++++-
 1 file changed, 33 insertions(+), 1 deletion(-)

(limited to 'src/Document.cxx')

diff --git a/src/Document.cxx b/src/Document.cxx
index 2036f383c..b75c754ac 100644
--- a/src/Document.cxx
+++ b/src/Document.cxx
@@ -87,6 +87,7 @@ Document::Document() {
 	eolMode = SC_EOL_LF;
 #endif
 	dbcsCodePage = 0;
+	lineEndBitSet = SC_LINE_END_TYPE_DEFAULT;
 	stylingBits = 5;
 	stylingBitsMask = 0x1F;
 	stylingMask = 0;
@@ -157,12 +158,29 @@ bool Document::SetDBCSCodePage(int dbcsCodePage_) {
 	if (dbcsCodePage != dbcsCodePage_) {
 		dbcsCodePage = dbcsCodePage_;
 		SetCaseFolder(NULL);
+		cb.SetLineEndTypes(lineEndBitSet & LineEndTypesSupported());
 		return true;
 	} else {
 		return false;
 	}
 }
 
+bool Document::SetLineEndTypesAllowed(int lineEndBitSet_) {
+	if (lineEndBitSet != lineEndBitSet_) {
+		lineEndBitSet = lineEndBitSet_;
+		int lineEndBitSetActive = lineEndBitSet & LineEndTypesSupported();
+		if (lineEndBitSetActive != cb.GetLineEndTypes()) {
+			ModifiedAt(0);
+			cb.SetLineEndTypes(lineEndBitSetActive);
+			return true;
+		} else {
+			return false;
+		}
+	} else {
+		return false;
+	}
+}
+
 void Document::InsertLine(int line) {
 	for (int j=0; j<ldSize; j++) {
 		if (perLineData[j])
@@ -267,7 +285,21 @@ int SCI_METHOD Document::LineEnd(int line) const {
 	if (line == LinesTotal() - 1) {
 		return LineStart(line + 1);
 	} else {
-		int position = LineStart(line + 1) - 1;
+		int position = LineStart(line + 1);
+		if (SC_CP_UTF8 == dbcsCodePage) {
+			unsigned char bytes[] = {
+				static_cast<unsigned char>(cb.CharAt(position-3)),
+				static_cast<unsigned char>(cb.CharAt(position-2)),
+				static_cast<unsigned char>(cb.CharAt(position-1)),
+			};
+			if (UTF8IsSeparator(bytes)) {
+				return position - UTF8SeparatorLength;
+			}
+			if (UTF8IsNEL(bytes+1)) {
+				return position - UTF8NELLength;
+			}
+		}
+		position--; // Back over CR or LF
 		// When line terminator is CR+LF, may need to go back one more
 		if ((position > LineStart(line)) && (cb.CharAt(position - 1) == '\r')) {
 			position--;
-- 
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