Moved ConvertLineEnds from ScintillaGTK to Document so that it can be used

on other platforms. Changed name to TransformLineEnds as Document already
had a ConvertLineEnds.

2 files changed, 32 insertions, 0 deletions

diff --git a/src/Document.cxx b/src/Document.cxx
index e8d88cc87..a8cca8a00 100644
--- a/src/Document.cxx
+++ b/src/Document.cxx
@@ -682,6 +682,37 @@ void Document::Indent(bool forwards, int lineBottom, int lineTop) {
 	}
 }
 
+// Convert line endings for a piece of text to a particular mode.
+// Stop at len or when a NUL is found.
+// Caller must delete the returned pointer.
+char *Document::TransformLineEnds(int *pLenOut, const char *s, size_t len, int eolMode) {
+	char *dest = new char[2 * len + 1];
+	const char *sptr = s;
+	char *dptr = dest;
+	for (size_t i = 0; (i < len) && (*sptr != '\0'); i++) {
+		if (*sptr == '\n' || *sptr == '\r') {
+			if (eolMode == SC_EOL_CR) {
+				*dptr++ = '\r';
+			} else if (eolMode == SC_EOL_LF) {
+				*dptr++ = '\n';
+			} else { // eolMode == SC_EOL_CRLF
+				*dptr++ = '\r';
+				*dptr++ = '\n';
+			}
+			if ((*sptr == '\r') && (i+1 < len) && (*(sptr+1) == '\n')) {
+				i++;
+				sptr++;
+			}
+			sptr++;
+		} else {
+			*dptr++ = *sptr++;
+		}
+	}
+	*dptr++ = '\0';
+	*pLenOut = (dptr - dest) - 1;
+	return dest;
+}
+
 void Document::ConvertLineEnds(int eolModeSet) {
 	BeginUndoAction();
 
diff --git a/src/Document.h b/src/Document.h
index 54ecadb00..ce27ffc47 100644
--- a/src/Document.h
+++ b/src/Document.h
@@ -156,6 +156,7 @@ public:
 	int GetColumn(int position);
 	int FindColumn(int line, int column);
 	void Indent(bool forwards, int lineBottom, int lineTop);
+	static char *TransformLineEnds(int *pLenOut, const char *s, size_t len, int eolMode);
 	void ConvertLineEnds(int eolModeSet);
 	void SetReadOnly(bool set) { cb.SetReadOnly(set); }
 	bool IsReadOnly() { return cb.IsReadOnly(); }