com.sap.prd.mobile.ios.mios.FatLibAnalyzer.java Source code

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Here is the source code for com.sap.prd.mobile.ios.mios.FatLibAnalyzer.java

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/*
 * #%L
 * xcode-maven-plugin
 * %%
 * Copyright (C) 2012 SAP AG
 * %%
 * 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.
 * #L%
 */
package com.sap.prd.mobile.ios.mios;

import java.io.BufferedReader;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.IOException;
import java.io.PrintStream;
import java.io.StringReader;
import java.nio.charset.Charset;
import java.util.HashSet;
import java.util.Set;

import org.apache.commons.io.IOUtils;
import org.apache.commons.lang.StringUtils;

class FatLibAnalyzer {
    private File fatLib;

    private Set<String> architectures = null;

    FatLibAnalyzer(final File fatLib) {
        if (fatLib == null)
            throw new NullPointerException();

        if (!fatLib.canRead())
            throw new IllegalArgumentException("Cannot access " + fatLib + ".");

        this.fatLib = fatLib;
    }

    File getFatLibrary() {
        return fatLib;
    }

    Set<String> getArchitectures() throws IOException {
        if (architectures == null) {

            BufferedReader br = null;

            try {

                br = new BufferedReader(new StringReader(getDetailedLipoInfo()));

                Set<String> architectures = new HashSet<String>();

                for (String line; (line = br.readLine()) != null;) {

                    if (!line.trim().startsWith("architecture"))
                        continue;

                    String[] strings = line.split(" ");

                    if (strings.length < 2)
                        throw new IllegalStateException("Architecture could not be parsed: " + line);

                    String[] architecture = new String[strings.length - 1];

                    System.arraycopy(strings, 1, architecture, 0, strings.length - 1);

                    architectures.add(StringUtils.join(architecture, " "));
                }

                this.architectures = architectures;
            } finally {
                IOUtils.closeQuietly(br);
            }
        }

        return this.architectures;
    }

    boolean containsI386() throws IOException {
        return getArchitectures().contains("i386");
    }

    boolean containsArmv() throws IOException {
        for (String architecture : getArchitectures()) {
            if (architecture.startsWith("armv")) {
                return true;
            }
        }
        return false;
    }

    private String getDetailedLipoInfo() throws IOException {
        final String defaultCharSet = Charset.defaultCharset().name();
        ByteArrayOutputStream byteOs = new ByteArrayOutputStream();
        PrintStream ps = new PrintStream(byteOs, true, defaultCharSet);
        try {
            Forker.forkProcess(ps, null, "lipo", "-detailed_info", fatLib.getAbsolutePath());

            return new String(byteOs.toByteArray(), defaultCharSet);
        } finally {
            IOUtils.closeQuietly(ps);
        }
    }
}