/** Sends an error to the user with the given {@code status} and body. */
public static void sendError(HttpServletResponse response, String body, int status)
throws IOException {
Preconditions.checkArgument(status > 300);
response.setStatus(status);
response.setHeader(HttpHeaders.CONTENT_TYPE, "text/plain");
response.getWriter().write(Escaper.escapeHtml(body));
}
public void testBuilderCreatesIndependentEscapers() {
// Setup a simple builder and create the first escaper.
Escapers.Builder builder = Escapers.builder();
builder.setSafeRange('a', 'z');
builder.setUnsafeReplacement("X");
builder.addEscape(' ', "_");
Escaper first = builder.build();
// Modify one of the existing mappings before creating a new escaper.
builder.addEscape(' ', "-");
builder.addEscape('!', "$");
Escaper second = builder.build();
// This should have no effect on existing escapers.
builder.addEscape(' ', "*");
// Test both escapers after modifying the builder.
assertEquals("Xhe_Xuick_Xrown_XoxX", first.escape("The Quick Brown Fox!"));
assertEquals("Xhe-Xuick-Xrown-Xox$", second.escape("The Quick Brown Fox!"));
}
@Override
protected void toString(Appendable sb, Escaper escaper) throws IOException {
if (isString()) {
sb.append('"');
sb.append(escaper.escapeJsonString(value.toString()));
sb.append('"');
} else {
sb.append(value.toString());
}
}
public void testAddEscapes() {
char[] cs = {'a', 'b', 'c'};
CharEscaperBuilder builder = new CharEscaperBuilder().addEscapes(cs, "Z");
Escaper escaper = builder.toEscaper();
assertEquals("ZZZdef", escaper.escape("abcdef"));
}
public void testBuilderInitialStateNoneUnsafe() {
// No characters are unsafe by default (safeMin == 0, safeMax == 0xFFFF).
Escaper escaper = Escapers.builder().setUnsafeReplacement("X").build();
assertEquals("\0\uFFFF", escaper.escape("\0\uFFFF"));
}
public void testBuilderInitialStateNoReplacement() {
// Unsafe characters aren't modified by default (unsafeReplacement == null).
Escaper escaper = Escapers.builder().setSafeRange('a', 'z').build();
assertEquals("The Quick Brown Fox", escaper.escape("The Quick Brown Fox"));
}
public void testNullEscaper() throws IOException {
Escaper escaper = Escapers.nullEscaper();
EscaperAsserts.assertBasic(escaper);
String s = "\0\n\t\\az09~\uD800\uDC00\uFFFF";
assertEquals("null escaper should have no effect", s, escaper.escape(s));
}
