StreamUtil.java
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/*
* Decompiled with CFR 0_118.
*
* Could not load the following classes:
* org.apache.tika.utils.CharsetUtils
*/
package com.day.cq.wcm.designimporter.util;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.apache.tika.utils.CharsetUtils;
public class StreamUtil {
private static final Pattern HTTP_EQUIV_PATTERN = Pattern.compile("(?is)<meta\\s+http-equiv\\s*=\\s*['\\\"]\\s*Content-Type['\\\"]\\s+content\\s*=\\s*['\\\"]([^'\\\"]+)['\\\"]");
private static final Pattern META_CHARSET_PATTERN = Pattern.compile("(?is)<meta\\s+charset\\s*=\\s*['\\\\\"]([^'\\\\\"]+)['\\\\\"]");
private static final Pattern XHTML_ENCODING_PATTERN = Pattern.compile("(?is)<\\?xml.*encoding=\"([^\"]*)\".*\\?>");
private static final int META_TAG_BUFFER_SIZE = 8192;
public static String getEncoding(InputStream stream) throws IOException {
stream.mark(8192);
char[] buffer = new char[8192];
InputStreamReader isr = new InputStreamReader(stream, "us-ascii");
int bufferSize = isr.read(buffer);
stream.reset();
if (bufferSize != -1) {
String charset;
String metaString = new String(buffer, 0, bufferSize);
Matcher m = HTTP_EQUIV_PATTERN.matcher(metaString);
if (m.find()) {
String[] attrs;
for (String attr : attrs = m.group(1).split(";")) {
String charset2;
String[] keyValue = attr.trim().split("=");
if (keyValue.length != 2 || !keyValue[0].equalsIgnoreCase("charset") || !CharsetUtils.isSupported((String)(charset2 = CharsetUtils.clean((String)keyValue[1])))) continue;
return charset2;
}
}
if ((m = META_CHARSET_PATTERN.matcher(metaString)).find() && CharsetUtils.isSupported((String)(charset = m.group(1)))) {
return charset;
}
m = XHTML_ENCODING_PATTERN.matcher(metaString);
if (m.find() && CharsetUtils.isSupported((String)(charset = m.group(1)))) {
return charset;
}
}
return "UTF-8";
}
}