/*
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* Copyright (c) 2018-2028, DreamLu All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* Neither the name of the dreamlu.net developer nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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* Author: DreamLu 卢春梦 (596392912@qq.com)
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*/
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package org.springblade.core.auto.service;
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import java.io.*;
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import java.nio.charset.Charset;
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import java.nio.charset.StandardCharsets;
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import java.util.Collection;
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import java.util.HashSet;
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import java.util.Set;
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/**
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* A helper class for reading and writing Services files.
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*
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* @author L.cm
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*/
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class ServicesFiles {
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private static final Charset UTF_8 = StandardCharsets.UTF_8;
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/**
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* Reads the set of service classes from a service file.
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*
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* @param input not {@code null}. Closed after use.
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* @return a not {@code null Set} of service class names.
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* @throws IOException
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*/
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static Set<String> readServiceFile(InputStream input) throws IOException {
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HashSet<String> serviceClasses = new HashSet<>();
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try (
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InputStreamReader isr = new InputStreamReader(input, UTF_8);
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BufferedReader r = new BufferedReader(isr)
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) {
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String line;
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while ((line = r.readLine()) != null) {
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int commentStart = line.indexOf('#');
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if (commentStart >= 0) {
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line = line.substring(0, commentStart);
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}
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line = line.trim();
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if (!line.isEmpty()) {
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serviceClasses.add(line);
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}
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}
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return serviceClasses;
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}
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}
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/**
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* Writes the set of service class names to a service file.
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*
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* @param output not {@code null}. Not closed after use.
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* @param services a not {@code null Collection} of service class names.
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* @throws IOException
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*/
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static void writeServiceFile(Collection<String> services, OutputStream output) throws IOException {
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BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(output, UTF_8));
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for (String service : services) {
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writer.write(service);
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writer.newLine();
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}
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writer.flush();
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}
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}
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