/**
* Removes any spaces or tabs from the end of the segment.
*
* @param segment The segment from which to remove tailing whitespace.
* @return <code>segment</code> with trailing whitespace removed.
*/
private static Segment removeEndingWhitespace(Segment segment) {
int toTrim = 0;
char currentChar = segment.setIndex(segment.getEndIndex() - 1);
while ((currentChar == ' ' || currentChar == '\t') && currentChar != CharacterIterator.DONE) {
toTrim++;
currentChar = segment.previous();
}
String stringVal = segment.toString();
String newStringVal = stringVal.substring(0, stringVal.length() - toTrim);
return new Segment(newStringVal.toCharArray(), 0, newStringVal.length());
}
/**
* Attempts to find the previous subsequence of the input sequence that matches the pattern.
*
* <p>This method starts at the beginning of the input sequence or, if a previous invocation of
* the method was successful and the matcher has not since been reset, at the first character not
* matched by the previous match.
*
* @return the index of the first occurrence of the search string, starting at the specified
* offset, or -1 if no occurrence was found.
*/
public int findPrevious() {
// Don't match empty strings and don't match if we are at the beginning of the document.
if (findString.length() == 0 || startIndex < findString.length() - 1) {
// System.out.println("too close to start");
return -1;
}
try {
int nextMatch = matchLowerCase.length - 1; // index of next matching character
// For simplicity, we request all text of the document in a single
// segment.
Segment text = new Segment();
text.setPartialReturn(false);
document.getText(0, startIndex + 1, text);
// Iterate through the characters in the current segment
char previous = text.last();
// System.out.println("previus isch "+previous);
for (text.last(); previous != Segment.DONE; previous = text.previous()) {
// Check if the current character matches with the next
// search character.
char current = text.current();
if (current == matchUpperCase[nextMatch] || current == matchLowerCase[nextMatch]) {
nextMatch--;
// System.out.println("matched "+nextMatch);
// Did we match all search characters?
if (nextMatch == -1) {
int foundIndex = text.getIndex() - text.getBeginIndex();
// System.out.println("found index:"+foundIndex);
if (matchType == MatchType.CONTAINS) {
return foundIndex;
} else if (matchType == MatchType.STARTS_WITH) {
if (!isWordChar(foundIndex - 1)) {
return foundIndex;
}
} else if (matchType == MatchType.FULL_WORD) {
if (!isWordChar(foundIndex - 1) && !isWordChar(foundIndex + matchLowerCase.length)) {
return foundIndex;
}
}
nextMatch = matchLowerCase.length - 1;
}
} else {
nextMatch = matchLowerCase.length - 1;
}
}
return -1;
} catch (BadLocationException e) {
throw new IndexOutOfBoundsException();
}
}