public HtmlBuilder attribute()

in java/com/google/gitiles/doc/html/HtmlBuilder.java [144:182]
33 lines of code
27 McCabe index (conditional complexity)

  public HtmlBuilder attribute(String att, String val) {
    if (Strings.isNullOrEmpty(val)) {
      return this;
    } else if ("href".equals(att) && "a".equals(tag)) {
      val = anchorHref(val);
    } else if ("src".equals(att) && "img".equals(tag)) {
      val = imgSrc(val);
    } else if ("src".equals(att) && "iframe".equals(tag)) {
      if (!isValidHttpUri(val)) {
        return this;
      }
      val = URI.escape(val);
    } else if (("height".equals(att) || "width".equals(att)) && "iframe".equals(tag)) {
      val = isValidCssDimension(val) ? val : "250px";
    } else if ("alt".equals(att) && "img".equals(tag)) {
      // allow
    } else if ("title".equals(att) && ("img".equals(tag) || "a".equals(tag))) {
      // allow
    } else if ("name".equals(att) && "a".equals(tag)) {
      // allow
    } else if ("start".equals(att) && "ol".equals(tag)) {
      // allow
    } else if (("colspan".equals(att) || "align".equals(att))
        && ("td".equals(tag) || "th".equals(tag))) {
      // allow
    } else {
      checkState(tag != null, "tag must be pending");
      checkArgument(ALLOWED_ATTRIBUTES.contains(att), "invalid attribute %s", att);
    }

    try {
      htmlBuf.append(' ').append(att).append("=\"");
      textBuf.append(val);
      htmlBuf.append('"');
      return this;
    } catch (IOException e) {
      throw new RuntimeIOException(e);
    }
  }