Java InputStreamReader Read readFileOrResource(String source)

Description

read File Or Resource

License

Apache License

Declaration

private static Reader readFileOrResource(String source) 

Method Source Code

//package com.java2s;
// Licensed to the Software Freedom Conservancy (SFC) under one

import java.io.BufferedReader;
import java.io.ByteArrayInputStream;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.Reader;
import java.util.Objects;
import java.util.function.Function;
import java.util.stream.Stream;

public class Main {
    private static Reader readFileOrResource(String source) {
        Stream<Function<String, InputStream>> suppliers = Stream.of((path) -> {
            try {
                return new FileInputStream(path);
            } catch (FileNotFoundException e) {
                return null;
            }/*from  ww w .j  a  v  a2 s .  c o m*/
        }, (path) -> Thread.currentThread().getContextClassLoader()
                .getResourceAsStream("org/openqa/grid/common/" + path),
                (path) -> Thread.currentThread().getContextClassLoader().getResourceAsStream(path),
                (path) -> new ByteArrayInputStream(path.getBytes()));

        InputStream in = suppliers.map(supplier -> supplier.apply(source)).filter(Objects::nonNull).findFirst()
                .orElseThrow(() -> new RuntimeException("Resource or file not found: " + source));

        return new BufferedReader(new InputStreamReader(in));
    }
}

Related

1. readFileIntoLines(File file)
2. readFileIntoLinesOfLongs(File file)
3. readFileLineByLine(final File filePath)
4. readFileList(File file)
5. readFileOneLine(String filename, String keyInLine)
6. readFiles(String[] files, String encoding)
7. readFileSB(File f)
8. readFileToLines(File file)
9. readFileToList(String fileName, String codeing)