/*
* @see org.eclipse.wst.jsdt.internal.corext.text.comment.CommentLine#scanLine(int)
*/
protected void scanLine(final int line) {
final CommentRegion parent = getParent();
final String start = getStartingPrefix().trim();
final String end = getEndingPrefix().trim();
final String content = getContentPrefix().trim();
final int lines = parent.getSize();
final CommentRange range = getFirst();
int offset = 0;
int postfix = 0;
String text = parent.getText(range.getOffset(), range.getLength());
if (line == 0) {
offset = text.indexOf(start);
if (offset >= 0 && text.substring(0, offset).trim().length() != 0) offset = -1;
if (offset >= 0) {
offset += start.length();
range.trimBegin(offset);
postfix = text.lastIndexOf(end);
if (postfix >= 0 && text.substring(postfix + end.length()).trim().length() != 0)
postfix = -1;
if (postfix >= offset)
// comment ends on same line
range.setLength(postfix - offset);
else {
postfix = text.lastIndexOf(content);
if (postfix >= 0 && text.substring(postfix + content.length()).trim().length() != 0)
postfix = -1;
if (postfix >= offset) {
range.setLength(postfix - offset);
parent.setBorder(BORDER_UPPER);
if (postfix > offset) {
text = parent.getText(range.getOffset(), range.getLength());
final IRegion region = trimLine(text, content);
range.move(region.getOffset());
range.setLength(region.getLength());
}
}
}
}
} else if (line == lines - 1) {
offset = text.indexOf(content);
if (offset >= 0 && text.substring(0, offset).trim().length() != 0) offset = -1;
postfix = text.lastIndexOf(end);
if (postfix >= 0 && text.substring(postfix + end.length()).trim().length() != 0) postfix = -1;
if (offset >= 0 && offset == postfix)
// no content on line, only the comment postfix
range.setLength(0);
else {
if (offset >= 0)
// omit the content prefix
range.trimBegin(offset + content.length());
if (postfix >= 0)
// omit the comment postfix
range.trimEnd(-end.length());
text = parent.getText(range.getOffset(), range.getLength());
final IRegion region = trimLine(text, content);
if (region.getOffset() != 0 || region.getLength() != text.length()) {
range.move(region.getOffset());
range.setLength(region.getLength());
parent.setBorder(BORDER_UPPER);
parent.setBorder(BORDER_LOWER);
}
}
} else {
offset = text.indexOf(content);
if (offset >= 0 && text.substring(0, offset).trim().length() != 0) offset = -1;
if (offset >= 0) {
offset += content.length();
range.trimBegin(offset);
}
}
}
