@NotNull
public DiffFragment createFragment(@Nullable DiffString text1, @Nullable DiffString text2) {
text1 = toNull(text1);
text2 = toNull(text2);
if (text1 == null && text2 == null) return new DiffFragment(DiffString.EMPTY, DiffString.EMPTY);
DiffFragment result = new DiffFragment(text1, text2);
if (text1 != null && text2 != null) {
result.setModified(!getWrapper(text1).equals(getWrapper(text2)));
}
return result;
}
public void execute() {
for (DiffFragment fragment : myFragments) {
myContext.myFragment = fragment;
process(fragment);
DiffString text1 = fragment.getText1();
DiffString text2 = fragment.getText2();
myContext.myStarts[0] += StringUtil.length(text1);
myContext.myStarts[1] += StringUtil.length(text2);
myContext.myLines[0] += countLines(text1);
myContext.myLines[1] += countLines(text2);
}
}
@Override
public void process(
@NotNull DiffFragment fragment, @NotNull DiffCorrection.FragmentsCollector collector) {
if (fragment.isEqual()) {
collector.add(fragment);
return;
}
if (fragment.isOneSide()) {
FragmentSide side = FragmentSide.chooseSide(fragment);
DiffString text = side.getText(fragment);
DiffString trimed = text.trim();
if (trimed.isEmpty()) {
collector.add(side.createFragment(text, DiffString.EMPTY, false));
return;
}
}
collector.add(fragment);
}
@NotNull
@Override
public DiffFragment createFragment(@NotNull Word word1, @NotNull Word word2) {
DiffString text1 = word1.getText();
DiffString text2 = word2.getText();
return word1.isWhitespace() && word2.isWhitespace()
? DiffFragment.unchanged(text1, text2)
: createFragment(text1, text2);
}
@NotNull
@Override
public DiffFragment createFragment(DiffString text1, DiffString text2) {
DiffString toCompare1 = toNotNull(text1);
DiffString toCompare2 = toNotNull(text2);
if (getWrapper(toCompare1).equals(getWrapper(toCompare2))) {
return DiffFragment.unchanged(toCompare1, toCompare2);
}
return new DiffFragment(text1, text2);
}
@NotNull
@Override
public DiffFragment createFragment(@NotNull Word word1, @NotNull Word word2) {
DiffString text1 = word1.getText();
DiffString text2 = word2.getText();
if (word1.isWhitespace()
&& word2.isWhitespace()
&& word1.atEndOfLine()
&& word2.atEndOfLine()) {
return DiffFragment.unchanged(text1, text2);
}
return createFragment(text1, text2);
}
public boolean isEqual(@NotNull DiffFragment fragment) {
if (fragment.isOneSide()) return false;
Object[] wrappers =
getLineWrappers(new DiffString[] {fragment.getText1(), fragment.getText2()});
return Comparing.equal(wrappers[0], wrappers[1]);
}
public static boolean isEmpty(DiffFragment fragment) {
return getTextLength(fragment.getText1()) == 0 && getTextLength(fragment.getText2()) == 0;
}
static ChangeType fromDiffFragment(DiffFragment fragment) {
if (fragment.getText1() == null) return INSERT;
if (fragment.getText2() == null) return DELETED;
return CHANGE;
}