com.android.icu4j.srcgen.checker.CheckAndroidIcu4JSource.java Source code

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Here is the source code for com.android.icu4j.srcgen.checker.CheckAndroidIcu4JSource.java

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/*
 * Copyright (C) 2015 The Android Open Source Project
 *
 * 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
 *
 *      http://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 com.android.icu4j.srcgen.checker;

import com.google.common.collect.Sets;
import com.google.currysrc.Main;
import com.google.currysrc.api.input.InputFileGenerator;

import com.android.icu4j.srcgen.Icu4jTransformRules;

import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.util.List;
import java.util.Set;

/**
 * Checks that the source in android_icu4j doesn't have obvious problems.
 */
public class CheckAndroidIcu4JSource {

    private static final boolean DEBUG = false;

    private CheckAndroidIcu4JSource() {
    }

    /**
     * Usage:
     * java com.android.icu4j.srcgen.CheckAndroidIcu4JSource {android_icu4j src directories}
     *   {report output file path}
     */
    public static void main(String[] args) throws Exception {
        if (args.length < 2) {
            throw new IllegalArgumentException("At least 2 argument required.");
        }

        Main main = new Main(DEBUG);

        // We assume we only need to look at ICU4J code for this for both passes.
        String[] inputDirs = new String[args.length - 1];
        System.arraycopy(args, 0, inputDirs, 0, inputDirs.length);
        InputFileGenerator inputFileGenerator = Icu4jTransformRules.createInputFileGenerator(inputDirs);

        // Pass 1: Establish the set of classes and members that are public in the Android API.
        System.out.println("Establishing Android public ICU4J API");
        RecordPublicApiRules recordPublicApiRulesRules = new RecordPublicApiRules(inputFileGenerator);
        main.execute(recordPublicApiRulesRules);
        List<String> publicMemberLocatorStrings = recordPublicApiRulesRules.publicMembers();
        System.out.println("Public API is:");
        for (String publicMemberLocatorString : publicMemberLocatorStrings) {
            System.out.println(publicMemberLocatorString);
        }

        // Pass 2: Check for issues.
        System.out.println("Checking for issues");
        Set<String> publicMembersSet = Sets.newHashSet(publicMemberLocatorStrings);
        File outputReportFile = new File(args[args.length - 1]);
        FileWriter out = new FileWriter(outputReportFile, false /* append */);
        try (BufferedWriter reportWriter = new BufferedWriter(out)) {
            reportWriter.append("Beginning of report:\n");
            CheckAndroidIcu4jSourceRules reportRules = new CheckAndroidIcu4jSourceRules(inputFileGenerator,
                    publicMembersSet);
            main.execute(reportRules, reportWriter);
            reportWriter.append("End of report\n");
        }

        System.out.println("Report file: " + outputReportFile);
    }

}