/**
* Vim doesn't start a delimited range on a newline or end a range on an empty line (try 'vi{'
* while within a function for proof).
*/
public static Position fixLeftDelimiter(TextContent model, CursorService cursor, Position delim) {
// check if the character after delimiter is a newline
if (isNewLine(model.getText(delim.getModelOffset() + 1, 1))) {
// start after newline
LineInformation line = model.getLineInformationOfOffset(delim.getModelOffset());
LineInformation nextLine = model.getLineInformation(line.getNumber() + 1);
delim = cursor.newPositionForModelOffset(nextLine.getBeginOffset());
} else {
delim = delim.addModelOffset(1);
}
return delim;
}
/**
* Calculates an offset position. Line breaks are not counted.
*
* @param position TODO
*/
public static int calculatePositionForOffset(
final TextContent p, int position, final int offset) {
LineInformation line = p.getLineInformationOfOffset(position);
if (offset < 0) {
int i = -offset;
while (i > 0) {
if (position > line.getBeginOffset()) {
position -= 1;
} else {
final int nextLine = line.getNumber() - 1;
if (nextLine < 0) {
break;
}
line = p.getLineInformation(nextLine);
position = Math.max(line.getBeginOffset(), line.getEndOffset() - 1);
}
i -= 1;
}
} else if (offset > 0) {
int i = offset;
int end = Math.max(line.getBeginOffset(), line.getEndOffset() - 1);
while (i > 0) {
if (position < end) {
position += 1;
} else {
final int nextLine = line.getNumber() + 1;
if (nextLine > p.getNumberOfLines() - 1) {
break;
}
line = p.getLineInformation(nextLine);
end = Math.max(line.getBeginOffset(), line.getEndOffset() - 1);
position = line.getBeginOffset();
}
i -= 1;
}
}
return position;
}
public static Position fixRightDelimiter(
TextContent model, CursorService cursor, Position delim) {
int delimIndex = delim.getModelOffset();
LineInformation line = model.getLineInformationOfOffset(delimIndex);
int lineStart = line.getBeginOffset();
if (delimIndex > lineStart) {
// is everything before the delimiter just whitespace?
String text = model.getText(lineStart, delimIndex - lineStart);
if (VimUtils.isBlank(text)) {
// end on previous line
LineInformation previousLine = model.getLineInformation(line.getNumber() - 1);
delimIndex = previousLine.getEndOffset();
delim = cursor.newPositionForModelOffset(delimIndex);
}
}
return delim;
}
public static int calculateLine(final TextContent text, final int offset) {
final LineInformation line = text.getLineInformationOfOffset(offset);
return line.getNumber();
}
/** @return true, if the last character in the text buffer is newline */
public static boolean endsWithEOL(final EditorAdaptor editor) {
final TextContent content = editor.getModelContent();
final LineInformation line = content.getLineInformation(content.getNumberOfLines() - 1);
return line.getNumber() > 0 && line.getLength() == 0;
}
