package com.baidu.cloud.videocache;

import android.text.TextUtils;
import android.webkit.MimeTypeMap;
import java.io.Closeable;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.net.URLDecoder;
import java.net.URLEncoder;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/* loaded from: classes.dex */
public class z {
    private static final Logger a = LoggerFactory.getLogger("ProxyCacheUtils");

    static String a(String str) {
        MimeTypeMap singleton = MimeTypeMap.getSingleton();
        String fileExtensionFromUrl = MimeTypeMap.getFileExtensionFromUrl(str);
        if (TextUtils.isEmpty(fileExtensionFromUrl)) {
            return null;
        }
        return singleton.getMimeTypeFromExtension(fileExtensionFromUrl);
    }

    static void a(Closeable closeable) {
        if (closeable != null) {
            try {
                closeable.close();
            } catch (IOException e) {
                a.error("Error closing resource", e);
            }
        }
    }

    static void a(byte[] bArr, long j, int i) {
        t.a(bArr, "Buffer must be not null!");
        t.a(j >= 0, "Data offset must be positive!");
        t.a(i >= 0 && i <= bArr.length, "Length must be in range [0..buffer.length]");
    }

    public static String b(String str) {
        try {
            return URLEncoder.encode(str, "utf-8");
        } catch (UnsupportedEncodingException e) {
            throw new RuntimeException("Error encoding url", e);
        }
    }

    static String c(String str) {
        try {
            return URLDecoder.decode(str, "utf-8");
        } catch (UnsupportedEncodingException e) {
            throw new RuntimeException("Error decoding url", e);
        }
    }
}