Example usage for java.util.zip ZipEntry getCrc

List of usage examples for java.util.zip ZipEntry getCrc

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Introduction

In this page you can find the example usage for java.util.zip ZipEntry getCrc.

Prototype

public long getCrc()

Source Link

Document

Returns the CRC-32 checksum of the uncompressed entry data.

Usage

From source file:Main.java

public static void main(String[] args) throws Exception {
    String zipname = "data.zip";
    ZipFile zipFile = new ZipFile(zipname);
    Enumeration enumeration = zipFile.entries();
    while (enumeration.hasMoreElements()) {
        ZipEntry zipEntry = (ZipEntry) enumeration.nextElement();
        System.out.println(zipEntry.getCrc());
    }/*w w w  . j  a v a2s  .  c  om*/
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    ZipFile zf = new ZipFile("your.zip");
    Enumeration e = zf.entries();
    while (e.hasMoreElements()) {
        ZipEntry ze = (ZipEntry) e.nextElement();
        String name = ze.getName();

        long crc = ze.getCrc();
        System.out.println("Its CRC is " + crc);

        String comment = ze.getComment();
        if (comment != null && !comment.equals("")) {
            System.out.println(comment);
        }//from  w  ww  . ja v  a  2 s . c  om
        if (ze.isDirectory()) {
            System.out.println(name + " is a directory");
        }
    }
}

From source file:MainClass.java

public static void main(String[] args) {

    try {/*from ww w.  ja va2  s .co  m*/
        ZipFile zf = new ZipFile("your.zip");
        Enumeration e = zf.entries();
        while (e.hasMoreElements()) {
            ZipEntry ze = (ZipEntry) e.nextElement();
            String name = ze.getName();

            long crc = ze.getCrc();
            System.out.println("Its CRC is " + crc);

            String comment = ze.getComment();
            if (comment != null && !comment.equals("")) {
                System.out.println(comment);
            }
            if (ze.isDirectory()) {
                System.out.println(name + " is a directory");
            }
        }
    } catch (IOException ex) {
        System.err.println(ex);
    }
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    ZipFile zf = new ZipFile("a.zip");
    Enumeration e = zf.entries();
    while (e.hasMoreElements()) {
        ZipEntry ze = (ZipEntry) e.nextElement();
        String name = ze.getName();

        long uncompressedSize = ze.getSize();
        long compressedSize = ze.getCompressedSize();
        long crc = ze.getCrc();
        int method = ze.getMethod();
        String comment = ze.getComment();

        System.out.println(name + " was stored at " + new Date(ze.getTime()));
        if (method == ZipEntry.STORED) {
            System.out.println("with a size of  " + uncompressedSize + " bytes");
        } else if (method == ZipEntry.DEFLATED) {
            System.out.println("from " + uncompressedSize + " bytes to " + compressedSize);
        } else {/*from  w  w  w . j a  v a  2  s .  c om*/
            System.out.println("from " + uncompressedSize + " bytes to " + compressedSize);
        }
        System.out.println("Its CRC is " + crc);
        if (comment != null && !comment.equals("")) {
            System.out.println(comment);
        }
        if (ze.isDirectory()) {
            System.out.println(name + " is a directory");
        }
    }
}

From source file:Main.java

/**
 * Check is classes.dex file has modified
 * //  www  . java  2 s .  co  m
 * @author : sWX293372
 * @version: 1.0
 * @return boolean if the classes.dex is modified then return true, else
 *         return true
 * @createTime : 2016-5-9
 */
public static boolean checkCRC(Context context, long crc) {
    boolean isModified = true;
    try {
        ZipFile zipFile = new ZipFile(context.getPackageCodePath());
        ZipEntry entry = zipFile.getEntry("classes.dex");
        if (crc == entry.getCrc()) {
            isModified = false;
        }
    } catch (IOException e) {
        isModified = true;
        e.printStackTrace();
    }
    return isModified;
}

From source file:com.taobao.android.builder.tools.zip.ZipUtils.java

public static void addFileAndDirectoryToZip(File output, File srcDir, Map<String, ZipEntry> zipEntryMethodMap)
        throws Exception {
    if (output.isDirectory()) {
        throw new IOException("This is a directory!");
    }/*  ww w . jav  a2  s .c  om*/
    if (!output.getParentFile().exists()) {
        output.getParentFile().mkdirs();
    }

    if (!output.exists()) {
        output.createNewFile();
    }
    List fileList = getSubFiles(srcDir);
    ZipOutputStream zos = new ZipOutputStream(new FileOutputStream(output));
    ZipEntry ze = null;
    byte[] buf = new byte[1024];
    int readLen = 0;
    for (int i = 0; i < fileList.size(); i++) {
        File f = (File) fileList.get(i);
        ze = new ZipEntry(getAbsFileName(srcDir.getPath(), f));
        ze.setSize(f.length());
        ze.setTime(f.lastModified());
        if (zipEntryMethodMap != null) {
            ZipEntry originEntry = zipEntryMethodMap.get(f.getAbsolutePath());
            if (originEntry != null) {
                ze.setCompressedSize(originEntry.getCompressedSize());
                ze.setCrc(originEntry.getCrc());
                ze.setMethod(originEntry.getMethod());
            }
        }
        zos.putNextEntry(ze);
        InputStream is = new BufferedInputStream(new FileInputStream(f));
        while ((readLen = is.read(buf, 0, 1024)) != -1) {
            zos.write(buf, 0, readLen);
        }
        is.close();
    }
    zos.close();
}

From source file:org.ambraproject.article.service.XslIngestArchiveProcessor.java

/**
 * Generate a description for a single zip-entry.
 *
 * @param ze  the zip entry to describe.
 * @param buf the buffer to place the description into
 *//*  w ww  .  ja  v  a2 s. c  o  m*/
private static void entry2xml(ZipEntry ze, StringBuilder buf) {
    buf.append("<ZipEntry name=\"").append(attrEscape(ze.getName())).append("\"");

    if (ze.isDirectory())
        buf.append(" isDirectory=\"true\"");
    if (ze.getCrc() >= 0)
        buf.append(" crc=\"").append(ze.getCrc()).append("\"");
    if (ze.getSize() >= 0)
        buf.append(" size=\"").append(ze.getSize()).append("\"");
    if (ze.getCompressedSize() >= 0)
        buf.append(" compressedSize=\"").append(ze.getCompressedSize()).append("\"");
    if (ze.getTime() >= 0)
        buf.append(" time=\"").append(ze.getTime()).append("\"");

    if (ze.getComment() != null || ze.getExtra() != null) {
        buf.append(">\n");

        if (ze.getComment() != null)
            buf.append("<Comment>").append(xmlEscape(ze.getComment())).append("</Comment>\n");
        if (ze.getExtra() != null)
            buf.append("<Extra>").append(base64Encode(ze.getExtra())).append("</Extra>\n");

        buf.append("</ZipEntry>\n");
    } else {
        buf.append("/>\n");
    }
}

From source file:io.gromit.geolite2.geonames.CountryFinder.java

/**
 * Read countries.//from w w w  .ja va 2s . co  m
 *
 * @param countriesLocationUrl the countries location url
 * @return the country finder
 */
private CountryFinder readCountries(String countriesLocationUrl) {
    ZipInputStream zipis = null;
    try {
        zipis = new ZipInputStream(new URL(countriesLocationUrl).openStream(), Charset.forName("UTF-8"));
        ZipEntry zipEntry = zipis.getNextEntry();
        logger.info("reading " + zipEntry.getName());
        if (crc == zipEntry.getCrc()) {
            logger.info("skipp, same CRC");
            return this;
        }

        CsvParserSettings settings = new CsvParserSettings();
        settings.setSkipEmptyLines(true);
        settings.trimValues(true);
        CsvFormat format = new CsvFormat();
        format.setDelimiter('\t');
        format.setLineSeparator("\n");
        format.setCharToEscapeQuoteEscaping('\0');
        format.setQuote('\0');
        settings.setFormat(format);
        CsvParser parser = new CsvParser(settings);

        List<String[]> lines = parser.parseAll(new InputStreamReader(zipis, "UTF-8"));

        for (String[] entry : lines) {
            Country country = new Country();
            country.setIso(entry[0]);
            country.setIso3(entry[1]);
            country.setName(entry[2]);
            country.setCapital(entry[3]);
            country.setContinent(entry[4]);
            country.setCurrencyCode(entry[5]);
            country.setCurrencyName(entry[6]);
            country.setPhone(entry[7]);
            country.setLanguage(StringUtils.substringBefore(entry[8], ","));
            country.setGeonameId(NumberUtils.toInt(entry[9]));
            geonameMap.put(country.getGeonameId(), country);
            isoMap.put(country.getIso(), country);
        }
    } catch (Exception e) {
        throw new RuntimeException(e);
    } finally {
        try {
            zipis.close();
        } catch (Exception e) {
        }
        ;
    }
    logger.info("loaded " + geonameMap.size() + " countries");
    return this;
}

From source file:io.gromit.geolite2.geonames.CityFinder.java

/**
 * Read cities./*  w w  w. j a  va2 s  .  c o  m*/
 *
 * @param citiesLocationUrl the cities location url
 * @return the city finder
 */
private CityFinder readCities(String citiesLocationUrl) {
    ZipInputStream zipis = null;
    CsvParserSettings settings = new CsvParserSettings();
    settings.setSkipEmptyLines(true);
    settings.trimValues(true);
    CsvFormat format = new CsvFormat();
    format.setDelimiter('\t');
    format.setLineSeparator("\n");
    format.setComment('\0');
    format.setCharToEscapeQuoteEscaping('\0');
    format.setQuote('\0');
    settings.setFormat(format);
    CsvParser parser = new CsvParser(settings);
    try {
        zipis = new ZipInputStream(new URL(citiesLocationUrl).openStream(), Charset.forName("UTF-8"));
        ZipEntry zipEntry = zipis.getNextEntry();
        logger.info("reading " + zipEntry.getName());
        if (crc == zipEntry.getCrc()) {
            logger.info("skipp, same CRC");
            return this;
        }
        RTree<City, Geometry> rtreeRead = RTree.create();
        List<String[]> lines = parser.parseAll(new InputStreamReader(zipis, "UTF-8"));
        for (String[] entry : lines) {
            City city = new City();
            city.setGeonameId(Integer.decode(entry[0]));
            city.setName(entry[1]);
            try {
                try {
                    city.setLatitude(Double.valueOf(entry[2]));
                    city.setLongitude(Double.valueOf(entry[3]));
                    rtreeRead = rtreeRead.add(city,
                            Geometries.pointGeographic(city.getLongitude(), city.getLatitude()));
                } catch (NumberFormatException | NullPointerException e) {
                }
                city.setCountryIsoCode(entry[4]);
                city.setSubdivisionOne(entry[5]);
                city.setSubdivisionTwo(entry[6]);
                city.setTimeZone(entry[7]);
            } catch (ArrayIndexOutOfBoundsException e) {
            }
            geonameMap.put(city.getGeonameId(), city);
        }
        this.rtree = rtreeRead;
        logger.info("loaded " + geonameMap.size() + " cities");
    } catch (Exception e) {
        logger.error(e.getMessage(), e);
    } finally {
        try {
            zipis.close();
        } catch (Exception e) {
        }
        ;
    }
    return this;
}

From source file:io.gromit.geolite2.geonames.SubdivisionFinder.java

/**
 * Read countries.//w  w w  . j  a  va 2s.  c  om
 *
 * @param subdivisionOneLocationUrl the subdivision one location url
 * @return the time zone finder
 */
public SubdivisionFinder readLevelOne(String subdivisionOneLocationUrl) {
    ZipInputStream zipis = null;
    try {
        zipis = new ZipInputStream(new URL(subdivisionOneLocationUrl).openStream(), Charset.forName("UTF-8"));
        ZipEntry zipEntry = zipis.getNextEntry();
        logger.info("reading " + zipEntry.getName());
        if (crc1 == zipEntry.getCrc()) {
            logger.info("skipp, same CRC");
            return this;
        }
        CsvParserSettings settings = new CsvParserSettings();
        settings.setSkipEmptyLines(true);
        settings.trimValues(true);
        CsvFormat format = new CsvFormat();
        format.setDelimiter('\t');
        format.setLineSeparator("\n");
        format.setCharToEscapeQuoteEscaping('\0');
        format.setQuote('\0');
        settings.setFormat(format);
        CsvParser parser = new CsvParser(settings);

        List<String[]> lines = parser.parseAll(new InputStreamReader(zipis, "UTF-8"));

        for (String[] entry : lines) {
            Subdivision subdivision = new Subdivision();
            subdivision.setId(entry[0]);
            subdivision.setName(entry[1]);
            subdivision.setGeonameId(NumberUtils.toInt(entry[2]));
            idOneMap.put(subdivision.getId(), subdivision);
            geonameIdMap.put(subdivision.getGeonameId(), subdivision);
        }
        logger.info("loaded " + lines.size() + " subdivisions level 1");
    } catch (Exception e) {
        logger.error(e.getMessage(), e);
    } finally {
        try {
            zipis.close();
        } catch (Exception e) {
        }
        ;
    }
    return this;
}