public ResultItem<T>[] getMergedResult() {
Insertion[] insertedByA = new Insertion[base.length + 1];
boolean[] deletedByA = new boolean[base.length];
Insertion[] insertedByB = new Insertion[base.length + 1];
boolean[] deletedByB = new boolean[base.length];
Diff aDiff = new Diff(base, a);
Diff.change aChanges = aDiff.diff_2(false);
recordChanges(insertedByA, deletedByA, aChanges);
Diff bDiff = new Diff(base, b);
Diff.change bChanges = bDiff.diff_2(false);
recordChanges(insertedByB, deletedByB, bChanges);
List<ResultItem> result = new ArrayList<ResultItem>();
InsertedItemFactory<T> aFactory = new InsertedItemFactoryA();
InsertedItemFactory<T> bFactory = new InsertedItemFactoryB();
int aPos = 0;
int bPos = 0;
for (int i = 0; i <= base.length; i++) {
if (insertedByA[i] != null) aPos = addInsertions(result, insertedByA[i], aFactory);
if (insertedByB[i] != null) bPos = addInsertions(result, insertedByB[i], bFactory);
if (i < base.length) {
ResultItem<T> item = new ResultItem<T>(base[i], i, -1, -1);
if (deletedByA[i] == false) item.aPos = aPos++;
if (deletedByB[i] == false) item.bPos = bPos++;
result.add(item);
}
}
return (ResultItem<T>[]) result.toArray(new ResultItem[result.size()]);
}
public static void main(final String[] argv) throws IOException {
final String filea = argv[argv.length - 2];
final String fileb = argv[argv.length - 1];
final String[] a = DiffPrint.slurp(filea);
final String[] b = DiffPrint.slurp(fileb);
final Diff d = new Diff(a, b);
char style = 'n';
for (int i = 0; i < argv.length - 2; ++i) {
final String f = argv[i];
if (f.startsWith("-")) {
for (int j = 1; j < f.length(); ++j) {
switch (f.charAt(j)) {
case 'e': // Ed style
style = 'e';
break;
case 'c': // Context diff
style = 'c';
break;
case 'u':
style = 'u';
break;
}
}
}
}
final boolean reverse = style == 'e';
final Diff.change script = d.diff_2(reverse);
if (script == null) {
System.err.println("No differences");
} else {
Base p;
switch (style) {
case 'e':
p = new EdPrint(a, b);
break;
case 'c':
p = new ContextPrint(a, b);
break;
case 'u':
p = new UnifiedPrint(a, b);
break;
default:
p = new NormalPrint(a, b);
}
p.print_header(filea, fileb);
p.print_script(script);
}
}
public File createDiff(File out, String dest) {
File result = out;
try {
String[] a = DiffPrint.slurp(original);
String[] b = DiffPrint.slurp(revised);
Diff d = new Diff(a, b);
Diff.change script = d.diff_2(false);
if (script == null) {
JOptionPane.showMessageDialog(null, "Error: No differences");
result = null;
} else {
DiffPrint.Base p = new DiffPrint.UnifiedPrint(a, b);
FileWriter fw = new FileWriter(result);
p.setOutput(fw);
p.print_header(".orig" + dest, dest);
p.print_script(script);
p.close();
doubleCheckChunkHeaders(result);
}
} catch (Exception e) {
result = null;
}
return result;
}