org.springframework.boot.autoconfigure.mustache.MustacheResourceTemplateLoader.java Source code

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Here is the source code for org.springframework.boot.autoconfigure.mustache.MustacheResourceTemplateLoader.java

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/*
 * Copyright 2012-2019 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 org.springframework.boot.autoconfigure.mustache;

import java.io.InputStreamReader;
import java.io.Reader;

import com.samskivert.mustache.Mustache;
import com.samskivert.mustache.Mustache.Compiler;
import com.samskivert.mustache.Mustache.TemplateLoader;

import org.springframework.context.ResourceLoaderAware;
import org.springframework.core.io.DefaultResourceLoader;
import org.springframework.core.io.Resource;
import org.springframework.core.io.ResourceLoader;

/**
 * Mustache TemplateLoader implementation that uses a prefix, suffix and the Spring
 * Resource abstraction to load a template from a file, classpath, URL etc. A
 * {@link TemplateLoader} is needed in the {@link Compiler} when you want to render
 * partials (i.e. tiles-like features).
 *
 * @author Dave Syer
 * @since 1.2.2
 * @see Mustache
 * @see Resource
 */
public class MustacheResourceTemplateLoader implements TemplateLoader, ResourceLoaderAware {

    private String prefix = "";

    private String suffix = "";

    private String charSet = "UTF-8";

    private ResourceLoader resourceLoader = new DefaultResourceLoader();

    public MustacheResourceTemplateLoader() {
    }

    public MustacheResourceTemplateLoader(String prefix, String suffix) {
        this.prefix = prefix;
        this.suffix = suffix;
    }

    /**
     * Set the charset.
     * @param charSet the charset
     */
    public void setCharset(String charSet) {
        this.charSet = charSet;
    }

    /**
     * Set the resource loader.
     * @param resourceLoader the resource loader
     */
    @Override
    public void setResourceLoader(ResourceLoader resourceLoader) {
        this.resourceLoader = resourceLoader;
    }

    @Override
    public Reader getTemplate(String name) throws Exception {
        return new InputStreamReader(
                this.resourceLoader.getResource(this.prefix + name + this.suffix).getInputStream(), this.charSet);
    }

}