private String getLineElementLabel(LineElement lineElement) {
int lineNumber = lineElement.getLine();
String lineNumberString =
Messages.format(SearchMessages.FileLabelProvider_line_number, new Integer(lineNumber));
String str = new String(lineNumberString);
Match[] matches = lineElement.getMatches(fPage.getInput());
Arrays.sort(matches, fMatchComparator);
String content = lineElement.getContents();
int pos = evaluateLineStart(matches, content, lineElement.getOffset());
int length = content.length();
int charsToCut =
getCharsToCut(
length, matches); // number of characters to leave away if the line is too long
for (int i = 0; i < matches.length; i++) {
FileMatch match = (FileMatch) matches[i];
int start = Math.max(match.getOriginalOffset() - lineElement.getOffset(), 0);
// append gap between last match and the new one
if (pos < start) {
if (charsToCut > 0) {
charsToCut = appendShortenedGap(content, pos, start, charsToCut, i == 0, str);
} else {
str += content.substring(pos, start);
}
}
// append match
int end =
Math.min(
match.getOriginalOffset() + match.getOriginalLength() - lineElement.getOffset(),
lineElement.getLength());
str += content.substring(start, end);
pos = end;
}
// append rest of the line
if (charsToCut > 0) {
appendShortenedGap(content, pos, length, charsToCut, false, str);
} else {
str += content.substring(pos);
}
return str;
}
private int evaluateLineStart(Match[] matches, String lineContent, int lineOffset) {
int max = lineContent.length();
if (matches.length > 0) {
FileMatch match = (FileMatch) matches[0];
max = match.getOriginalOffset() - lineOffset;
if (max < 0) {
return 0;
}
}
for (int i = 0; i < max; i++) {
char ch = lineContent.charAt(i);
if (!Character.isWhitespace(ch) || ch == '\n' || ch == '\r') {
return i;
}
}
return max;
}