public void addCodeEditEntriesForDiffText(CompositeDiff cd, String diff_txt) {
String[] lines = diff_txt.split("\n");
for (int i = 0; i < lines.length; i++) {
if (lines[i].startsWith("@@")) { // chunk start
String[] ranges = lines[i].split(" ");
String range_remove = ranges[1];
int rem_start = Integer.valueOf(range_remove.split(",")[0]);
rem_start = rem_start * -1;
int rem_size = 1;
if (range_remove.contains(",")) rem_size = Integer.valueOf(range_remove.split(",")[1]);
String range_add = ranges[2];
int add_start = Integer.valueOf(range_add.split(",")[0]);
int add_size = 1;
if (range_add.contains(",")) add_size = Integer.valueOf(range_add.split(",")[1]);
CodeEdit ce = ModelsFactory.eINSTANCE.createCodeEdit();
ce.setRem_idx(rem_start);
ce.setRem_size(rem_size);
ce.setAdd_idx(add_start);
ce.setAdd_size(add_size);
StringBuffer content = new StringBuffer(250);
int x = i;
Vector<String> editedLines = new Vector<String>();
while (x < lines.length) {
editedLines.add(lines[x]);
content.append(lines[x] + "\n");
x++;
if (x >= lines.length || lines[x].startsWith("@@")) break;
}
adjustDiffForEmptyLines(ce, editedLines);
ce.setDiff(content.toString());
int j = i + 1;
List<String> chunk_added_lines = new ArrayList<String>();
List<String> chunk_removed_lines = new ArrayList<String>();
while (j < lines.length && !lines[j].startsWith("@@")) {
if (lines[j].startsWith("+")) chunk_added_lines.add(lines[j]);
if (lines[j].startsWith("-")) chunk_removed_lines.add(lines[j]);
j++;
}
if (add_size > 0) {
Entry<Integer, Integer> entry =
new AbstractMap.SimpleEntry<Integer, Integer>(add_start, add_start + (add_size - 1));
cd.added_lines.add(entry);
}
if (rem_size > 0) {
rem_size--;
Entry<Integer, Integer> entry =
new AbstractMap.SimpleEntry<Integer, Integer>(rem_start, rem_start + (rem_size - 1));
cd.removed_lines.add(entry);
}
cd.changed_lines.add(ce);
i = j - 1;
}
}
}
private void adjustDiffForEmptyLines(CodeEdit ce, Vector<String> lines) {
int leadingRemovedEmptyLines = 0;
int trailingRemovedEmptyLines = 0;
int leadingAddedEmptyLines = 0;
int trailingAddedEmptyLines = 0;
Vector<String> deletedLines = new Vector<String>();
Vector<String> addedLines = new Vector<String>();
for (String s : lines) {
if (s.startsWith("-")) deletedLines.add(s);
else if (s.startsWith("+")) addedLines.add(s);
}
for (int i = 0; i < deletedLines.size(); i++) {
if (deletedLines.get(i).trim().length() == 1) leadingRemovedEmptyLines++;
else break;
}
for (int i = deletedLines.size() - 1; i > 0; i--) {
if (deletedLines.get(i).trim().length() == 1) trailingRemovedEmptyLines++;
else break;
}
for (int i = 0; i < addedLines.size(); i++) {
if (addedLines.get(i).trim().length() == 1) leadingAddedEmptyLines++;
else break;
}
for (int i = addedLines.size() - 1; i > 0; i--) {
if (addedLines.get(i).trim().length() == 1) trailingAddedEmptyLines++;
else break;
}
ce.setAdd_idx(ce.getAdd_idx() + leadingAddedEmptyLines);
ce.setAdd_size(ce.getAdd_size() - trailingAddedEmptyLines - leadingAddedEmptyLines);
ce.setRem_idx(ce.getRem_idx() + leadingRemovedEmptyLines);
ce.setRem_size(ce.getRem_size() - trailingRemovedEmptyLines - leadingRemovedEmptyLines);
}