rife2-template-renderers/lib/src/main/java/rife/render/QrCode.java

59 lines
1.9 KiB
Java

/*
* Copyright 2023 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package rife.render;
import rife.template.Template;
import rife.template.ValueRenderer;
import java.io.IOException;
import java.io.StringReader;
import java.util.Properties;
/**
* <p>Generates an SVG QR Code for a template value using <a href="https://goqr.me/">goQR.me</a>.</p>
*
* <p>Usage:</p>
*
* <pre>
* &lt;!--v render:rife.render.QrCode:valueId/--&gt;
* {{v render:rife.render.QrCode:valueId/}}
* </pre>
*
* @author <a href="https://erik.thauvin.net/">Erik C. Thauvin</a>
* @see <a href="https://github.com/rife2/rife2-template-renderers/wiki/rife.render.QrCode">rife.render.QrCode</a>
* @since 1.0
*/
public class QrCode implements ValueRenderer {
/**
* {@inheritDoc}
*/
@Override
public String render(Template template, String valueId, String differentiator) {
var size = "150x150";
if (template.hasDefaultValue(valueId)) {
var properties = new Properties();
try {
properties.load(new StringReader(template.getDefaultValue(valueId)));
size = properties.getProperty("size", size);
} catch (IOException ignore) {
// do nothing
}
}
return RenderUtils.qrCode(template.getValueOrAttribute(differentiator), size);
}
}