void KateAutoIndent::keepIndent ( int line )
{
// no line in front, no work...
if (line <= 0)
return;
// keep indentation: find line with content
int nonEmptyLine = line - 1;
while (nonEmptyLine >= 0) {
if (doc->lineLength(nonEmptyLine) > 0) {
break;
}
--nonEmptyLine;
}
Kate::TextLine prevTextLine = doc->plainKateTextLine(nonEmptyLine);
Kate::TextLine textLine = doc->plainKateTextLine(line);
// textline not found, cu
if (!prevTextLine || !textLine)
return;
const QString previousWhitespace = prevTextLine->leadingWhitespace();
// remove leading whitespace, then insert the leading indentation
doc->editStart ();
if (!keepExtra)
{
const QString currentWhitespace = textLine->leadingWhitespace();
doc->editRemoveText (line, 0, currentWhitespace.length());
}
doc->editInsertText (line, 0, previousWhitespace);
doc->editEnd ();
}
bool KateAutoIndent::doIndent(int line, int indentDepth, int align)
{
kDebug (13060) << "doIndent: line: " << line << " indentDepth: " << indentDepth << " align: " << align;
Kate::TextLine textline = doc->plainKateTextLine(line);
// textline not found, cu
if (!textline)
return false;
// sanity check
if (indentDepth < 0)
indentDepth = 0;
const QString oldIndentation = textline->leadingWhitespace();
// Preserve existing "tabs then spaces" alignment if and only if:
// - no alignment was passed to doIndent and
// - we aren't using spaces for indentation and
// - we aren't rounding indentation up to the next multiple of the indentation width and
// - we aren't using a combination to tabs and spaces for alignment, or in other words
// the indent width is a multiple of the tab width.
bool preserveAlignment = !useSpaces && keepExtra && indentWidth % tabWidth == 0;
if (align == 0 && preserveAlignment)
{
// Count the number of consecutive spaces at the end of the existing indentation
int i = oldIndentation.size() - 1;
while (i >= 0 && oldIndentation.at(i) == ' ')
--i;
// Use the passed indentDepth as the alignment, and set the indentDepth to
// that value minus the number of spaces found (but don't let it get negative).
align = indentDepth;
indentDepth = qMax(0, align - (oldIndentation.size() - 1 - i));
}
QString indentString = tabString(indentDepth, align);
// Modify the document *ONLY* if smth has really changed!
if (oldIndentation != indentString)
{
// remove leading whitespace, then insert the leading indentation
doc->editStart ();
doc->editRemoveText (line, 0, oldIndentation.length());
doc->editInsertText (line, 0, indentString);
doc->editEnd ();
}
return true;
}