/**
* Writes a line spanning the full width of the code view, including the gutter.
*
* @param text to put on that line; will be HTML-escaped.
*/
private void writeFullWidthLine(String text) {
try {
os.write("<tr><td class='diff-cell' colspan='4'>".getBytes());
os.write(StringUtils.escapeForHtml(text, false).getBytes());
os.write("</td></tr>\n".getBytes());
} catch (IOException ex) {
// Cannot happen with a ByteArrayOutputStream
}
}
protected void writeRange(final char prefix, final int begin, final int cnt) throws IOException {
os.write(' ');
os.write(prefix);
switch (cnt) {
case 0:
// If the range is empty, its beginning number must be the
// line just before the range, or 0 if the range is at the
// start of the file stream. Here, begin is always 1 based,
// so an empty file would produce "0,0".
//
os.write(encodeASCII(begin - 1));
os.write(',');
os.write('0');
break;
case 1:
// If the range is exactly one line, produce only the number.
//
os.write(encodeASCII(begin));
break;
default:
os.write(encodeASCII(begin));
os.write(',');
os.write(encodeASCII(cnt));
break;
}
}
@Override
public void flush() throws IOException {
if (truncated) {
os.resetTo(truncateTo);
}
super.flush();
}
/** Rewind and issue a message that the diff is too large. */
private void reset() {
if (!isOff) {
os.resetTo(startCurrent);
writeFullWidthLine(getMsg("gb.diffFileDiffTooLarge", "Diff too large"));
totalNofLinesCurrent = totalNofLinesPrevious;
isOff = true;
}
}
@Override
public void format(DiffEntry ent) throws IOException {
currentPath = diffStat.addPath(ent);
nofLinesCurrent = 0;
isOff = false;
entry = ent;
if (!truncated) {
totalNofLinesPrevious = totalNofLinesCurrent;
if (globalDiffLimit > 0 && totalNofLinesPrevious > globalDiffLimit) {
truncated = true;
isOff = true;
}
truncateTo = os.size();
} else {
isOff = true;
}
if (truncated) {
skipped.add(ent);
} else {
// Produce a header here and now
String path;
String id;
if (ChangeType.DELETE.equals(ent.getChangeType())) {
path = ent.getOldPath();
id = ent.getOldId().name();
} else {
path = ent.getNewPath();
id = ent.getNewId().name();
}
StringBuilder sb =
new StringBuilder(
MessageFormat.format(
"<div class='header'><div class=\"diffHeader\" id=\"n{0}\"><i class=\"icon-file\"></i> ",
id));
sb.append(StringUtils.escapeForHtml(path, false)).append("</div></div>");
sb.append("<div class=\"diff\"><table cellpadding='0'><tbody>\n");
os.write(sb.toString().getBytes());
}
// Keep formatting, but if off, don't produce anything anymore. We just keep on counting.
super.format(ent);
if (!truncated) {
// Close the table
os.write("</tbody></table></div>\n".getBytes());
}
}
/**
* Output a hunk header
*
* @param aStartLine within first source
* @param aEndLine within first source
* @param bStartLine within second source
* @param bEndLine within second source
* @throws IOException
*/
@Override
protected void writeHunkHeader(int aStartLine, int aEndLine, int bStartLine, int bEndLine)
throws IOException {
if (nofLinesCurrent++ == 0) {
handleChange();
startCurrent = os.size();
}
if (!isOff) {
totalNofLinesCurrent++;
if (nofLinesCurrent > maxDiffLinesPerFile && maxDiffLinesPerFile > 0) {
reset();
} else {
os.write(
"<tr><th class='diff-line' data-lineno='..'></th><th class='diff-line' data-lineno='..'></th><th class='diff-state'></th><td class='hunk_header'>"
.getBytes());
os.write('@');
os.write('@');
writeRange('-', aStartLine + 1, aEndLine - aStartLine);
writeRange('+', bStartLine + 1, bEndLine - bStartLine);
os.write(' ');
os.write('@');
os.write('@');
os.write("</td></tr>\n".getBytes());
}
}
left = aStartLine + 1;
right = bStartLine + 1;
}
/**
* Workaround function for complex private methods in DiffFormatter. This sets the html for the
* diff headers.
*
* @return
*/
public String getHtml() {
String html = RawParseUtils.decode(os.toByteArray());
String[] lines = html.split("\n");
StringBuilder sb = new StringBuilder();
for (String line : lines) {
if (line.startsWith("index")) {
// skip index lines
} else if (line.startsWith("new file") || line.startsWith("deleted file")) {
// skip new file lines
} else if (line.startsWith("\\ No newline")) {
// skip no new line
} else if (line.startsWith("---") || line.startsWith("+++")) {
// skip --- +++ lines
} else if (line.startsWith("diff")) {
// skip diff lines
} else {
boolean gitLinkDiff =
line.length() > 0 && line.substring(1).startsWith("Subproject commit");
if (gitLinkDiff) {
sb.append("<tr><th class='diff-line'></th><th class='diff-line'></th>");
if (line.charAt(0) == '+') {
sb.append("<th class='diff-state diff-state-add'></th><td class=\"diff-cell add2\">");
} else {
sb.append(
"<th class='diff-state diff-state-sub'></th><td class=\"diff-cell remove2\">");
}
line = StringUtils.escapeForHtml(line.substring(1), false);
}
sb.append(line);
if (gitLinkDiff) {
sb.append("</td></tr>");
}
sb.append('\n');
}
}
if (truncated) {
sb.append(
MessageFormat.format(
"<div class='header'><div class='diffHeader'>{0}</div></div>",
StringUtils.escapeForHtml(
getMsg("gb.diffTruncated", "Diff truncated after the above file"), false)));
// List all files not shown. We can be sure we do have at least one path in skipped.
sb.append(
"<div class='diff'><table cellpadding='0'><tbody><tr><td class='diff-cell' colspan='4'>");
String deletedSuffix =
StringUtils.escapeForHtml(getMsg("gb.diffDeletedFileSkipped", "(deleted)"), false);
boolean first = true;
for (DiffEntry entry : skipped) {
if (!first) {
sb.append('\n');
}
if (ChangeType.DELETE.equals(entry.getChangeType())) {
sb.append(
"<span id=\"n"
+ entry.getOldId().name()
+ "\">"
+ StringUtils.escapeForHtml(entry.getOldPath(), false)
+ ' '
+ deletedSuffix
+ "</span>");
} else {
sb.append(
"<span id=\"n"
+ entry.getNewId().name()
+ "\">"
+ StringUtils.escapeForHtml(entry.getNewPath(), false)
+ "</span>");
}
first = false;
}
skipped.clear();
sb.append("</td></tr></tbody></table></div>");
}
return sb.toString();
}
@Override
protected void writeLine(final char prefix, final RawText text, final int cur)
throws IOException {
if (nofLinesCurrent++ == 0) {
handleChange();
startCurrent = os.size();
}
// update entry diffstat
currentPath.update(prefix);
if (isOff) {
return;
}
totalNofLinesCurrent++;
if (nofLinesCurrent > maxDiffLinesPerFile && maxDiffLinesPerFile > 0) {
reset();
} else {
// output diff
os.write("<tr>".getBytes());
switch (prefix) {
case '+':
os.write(
("<th class='diff-line'></th><th class='diff-line' data-lineno='"
+ (right++)
+ "'></th>")
.getBytes());
os.write("<th class='diff-state diff-state-add'></th>".getBytes());
os.write("<td class='diff-cell add2'>".getBytes());
break;
case '-':
os.write(
("<th class='diff-line' data-lineno='"
+ (left++)
+ "'></th><th class='diff-line'></th>")
.getBytes());
os.write("<th class='diff-state diff-state-sub'></th>".getBytes());
os.write("<td class='diff-cell remove2'>".getBytes());
break;
default:
os.write(
("<th class='diff-line' data-lineno='"
+ (left++)
+ "'></th><th class='diff-line' data-lineno='"
+ (right++)
+ "'></th>")
.getBytes());
os.write("<th class='diff-state'></th>".getBytes());
os.write("<td class='diff-cell context2'>".getBytes());
break;
}
os.write(encode(codeLineToHtml(prefix, text.getString(cur))));
os.write("</td></tr>\n".getBytes());
}
}
