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/* --------------------------------------------------------------------
* Inugami
* --------------------------------------------------------------------
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, version 3.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see .
*/
package io.inugami.commons.files.zip;
import io.inugami.api.loggers.Loggers;
import io.inugami.api.models.JsonBuilder;
import java.io.BufferedReader;
import java.io.File;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.Enumeration;
import java.util.List;
import java.util.function.UnaryOperator;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
/**
* ZipScaner
*
* @author patrickguillerm
* @since 23 déc. 2017
*/
@SuppressWarnings({"java:S5042", "java:S5361", "java:S3655", "java:S2139"})
public class ZipScaner {
// =========================================================================
// ATTRIBUTES
// =========================================================================
private static final String PATH_SEPARATOR = "/";
// =========================================================================
// METHODS
// =========================================================================
public List scan(final File path, final UnaryOperator> sortsFunction,
final List processors, final boolean keepHidden) throws IOException {
List result = null;
try (final ZipFile zipFile = new ZipFile(path)) {
result = read(path, zipFile, sortsFunction, processors, keepHidden);
} catch (final IOException e) {
Loggers.IO.error(e.getMessage());
}
return result;
}
// =========================================================================
// READ
// =========================================================================
private List read(final File path, final ZipFile zipFile,
final UnaryOperator> sortsFunction,
final List processors, final boolean keepHidden) throws IOException {
final List result = new ArrayList<>();
final Enumeration entries = (Enumeration) zipFile.entries();
List entriesItems = new ArrayList<>();
while (entries.hasMoreElements()) {
final ZipEntry entry = entries.nextElement();
if (!entry.isDirectory() && showHidden(entry.getName(), keepHidden)) {
final URL url = buildUrl(path, entry.getName());
result.add(url);
entriesItems.add(entry);
}
}
if (sortsFunction != null) {
entriesItems = sortsFunction.apply(entriesItems);
}
if (processors != null) {
for (final ZipEntry entry : entriesItems) {
processProcessors(entry.getName(), entry, zipFile, processors);
}
}
return result;
}
private void processProcessors(final String name, final ZipEntry entry, final ZipFile zipFile,
final List processors) {
for (final ZipScanProcessor processor : processors) {
if (processor.getMatcher().matches(name) && processor.getConsumer().isPresent()) {
processor.getConsumer().get().accept(entry, zipFile);
}
}
}
@SuppressWarnings({"java:S2259"})
private boolean showHidden(final String name, final boolean keepHidden) {
if (name == null) {
return false;
}
return keepHidden || !extractFileName(name).startsWith(".");
}
private URL buildUrl(final File zipFile, final String name) throws IOException {
final StringBuilder url = new StringBuilder();
url.append(zipFile.toURI().toURL());
url.append("!");
url.append(name);
try {
return new URL(url.toString());
} catch (final MalformedURLException e) {
throw new IOException(e.getMessage(), e);
}
}
// =========================================================================
// PUBLIC STATIC
// =========================================================================
public static String extractFileName(final String name) {
if (Loggers.DEBUG.isDebugEnabled()) {
Loggers.DEBUG.debug("extract filename :{}", name);
}
String result = name == null ? null : name.replaceAll("\\\\", PATH_SEPARATOR);
if (result != null && result.contains(PATH_SEPARATOR)) {
final String[] parts = result.split(PATH_SEPARATOR);
result = parts[parts.length - 1];
}
return result;
}
public static String readFromUrl(final ZipEntry zipEntry, final ZipFile zipFile) throws IOException {
final JsonBuilder result = new JsonBuilder();
final long size = zipEntry.getSize();
BufferedReader buffer = null;
if (size > 0) {
try {
buffer = new BufferedReader(new InputStreamReader(zipFile.getInputStream(zipEntry)));
} catch (final IOException e) {
Loggers.IO.error(e.getMessage());
}
}
if (buffer != null) {
String line;
try {
while ((line = buffer.readLine()) != null) {
result.write(line);
result.line();
}
} catch (final IOException e) {
Loggers.IO.error(e.getMessage());
throw e;
} finally {
try {
buffer.close();
} catch (final IOException e) {
Loggers.IO.error(e.getMessage());
}
}
}
return result.toString();
}
}
