public void InsertRange(int start, IList <string> lines)
{
// If the set of lines is empty we can exit now
if ((null == lines) || (lines.Count == 0))
{
hasMerged = true;
return;
}
if (start < 0)
{
throw new ArgumentOutOfRangeException("start");
}
int insertLine = start;
int insertIndex = 0;
// Verify that the insertion point is inside the buffer.
int totalLines = LineCount;
if (insertLine > totalLines)
{
insertLine = totalLines;
}
// Create the text to add to the buffer.
StringBuilder builder = new StringBuilder();
if ((insertLine == totalLines) && (totalLines > 0))
{
insertLine = totalLines - 1;
ErrorHandler.ThrowOnFailure(textBuffer.GetLengthOfLine(insertLine, out insertIndex));
builder.AppendLine();
}
foreach (string line in lines)
{
builder.AppendLine(line);
}
// Lock the buffer before changing its content.
ErrorHandler.ThrowOnFailure(textBuffer.LockBuffer());
try {
// Get the text to insert and pin it so that we can pass it as pointer
// to the buffer's functions.
string text = builder.ToString();
GCHandle handle = GCHandle.Alloc(text, GCHandleType.Pinned);
try {
TextSpan[] span = new TextSpan[1];
ErrorHandler.ThrowOnFailure(textBuffer.ReplaceLines(insertLine, insertIndex, insertLine, insertIndex, handle.AddrOfPinnedObject(), text.Length, span));
hasMerged = true;
} finally {
// Free the memory.
handle.Free();
}
} finally {
// Make sure that the buffer is unlocked also in case of exception.
textBuffer.UnlockBuffer();
}
}
/// <summary>
/// Flushes the pending data.
/// </summary>
public override void Flush()
{
// If there is no data in the buffer, then there is nothing to do.
if (0 == usedBuffer)
{
// Make sure that the read-only region is correct and exit.
ExtendReadOnlyRegion();
return;
}
string text = null;
// We have to use a StreamReader in order to work around problems with the
// encoding of the data sent in, but in order to build the reader we need
// a memory stream to read the data in the buffer.
using (MemoryStream s = new MemoryStream(byteBuffer, 0, usedBuffer))
{
// Now we can build the reader from the memory stream.
using (StreamReader reader = new StreamReader(s))
{
// At the end we can get the text.
text = reader.ReadToEnd();
}
}
// Now the buffer is empty.
usedBuffer = 0;
// The text is always added at the end of the buffer.
int lastLine;
int lastColumn;
Microsoft.VisualStudio.ErrorHandler.ThrowOnFailure(
textLines.GetLastLineIndex(out lastLine, out lastColumn));
// Lock the buffer before changing its content.
Microsoft.VisualStudio.ErrorHandler.ThrowOnFailure(
textLines.LockBuffer());
try
{
GCHandle handle = GCHandle.Alloc(text, GCHandleType.Pinned);
try
{
TextSpan[] span = new TextSpan[1];
Microsoft.VisualStudio.ErrorHandler.ThrowOnFailure(
textLines.ReplaceLines(lastLine, lastColumn, lastLine, lastColumn, handle.AddrOfPinnedObject(), text.Length, span));
}
finally
{
handle.Free();
}
// Extend the read-only region of the buffer to include this text.
ExtendReadOnlyRegion();
}
finally
{
Microsoft.VisualStudio.ErrorHandler.ThrowOnFailure(
textLines.UnlockBuffer());
}
}
public int LockBuffer()
{
return(_textBuffer.LockBuffer());
}