org.geysermc.connector.utils

Class FileUtils

java.lang.Object

org.geysermc.connector.utils.FileUtils

public class FileUtils
extends Object

Constructor Summary

Constructors

Constructor and Description
FileUtils()

Method Summary

Modifier and Type	Method and Description
static byte[]	calculateSHA1(File file) Calculate the SHA1 hash of a file
static byte[]	calculateSHA256(File file) Calculate the SHA256 hash of a file
static File	fileOrCopiedFromResource(File file, String name, Function<String,String> format) Open the specified file or copy if from resources
static File	fileOrCopiedFromResource(String name, Function<String,String> fallback) Open the specified file or copy if from resources
static Set<Class<?>>	getGeneratedClassesForAnnotation(Class<? extends Annotation> annotationClass) Returns a set of all the classes that are annotated by a given annotation.
static Set<Class<?>>	getGeneratedClassesForAnnotation(String input) Returns a set of all the classes that are annotated by a given annotation.
static InputStream	getResource(String resource) Get an InputStream for the given resource path, throws AssertionError if resource is not found
static <T> T	loadConfig(File src, Class<T> valueType) Load the given YAML file into the given class
static <T> T	loadJson(InputStream src, Class<T> valueType)
static <T> T	loadYaml(InputStream src, Class<T> valueType)
static byte[]	readAllBytes(File file) An android compatible version of Files.readAllBytes(java.nio.file.Path)
static byte[]	readAllBytes(InputStream stream)
static void	writeFile(File file, char[] data) Writes the given data to the specified file on disk
static void	writeFile(String name, char[] data) Writes the given data to the specified file on disk

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

FileUtils

public FileUtils()

Method Detail

loadConfig

public static <T> T loadConfig(File src,
                               Class<T> valueType)
                        throws IOException

Load the given YAML file into the given class

Type Parameters:

T - the type

Parameters:

src - File to load

valueType - Class to load file into

Returns:

The data as the given class

Throws:

IOException - if the config could not be loaded

loadYaml

public static <T> T loadYaml(InputStream src,
                             Class<T> valueType)
                      throws IOException

Throws:

IOException

loadJson

public static <T> T loadJson(InputStream src,
                             Class<T> valueType)
                      throws IOException

Throws:

IOException

fileOrCopiedFromResource

public static File fileOrCopiedFromResource(String name,
                                            Function<String,String> fallback)
                                     throws IOException

Open the specified file or copy if from resources

Parameters:

name - File and resource name

fallback - Formatting callback

Returns:

File handle of the specified file

Throws:

IOException - if the file failed to copy from resource

fileOrCopiedFromResource

public static File fileOrCopiedFromResource(File file,
                                            String name,
                                            Function<String,String> format)
                                     throws IOException

Open the specified file or copy if from resources

Parameters:

file - File to open

name - Name of the resource get if needed

format - Formatting callback

Returns:

File handle of the specified file

Throws:

IOException - if the file failed to copy from resource

writeFile

public static void writeFile(File file,
                             char[] data)
                      throws IOException

Writes the given data to the specified file on disk

Parameters:

file - File to write to

data - Data to write to the file

Throws:

IOException - if the file failed to write

writeFile

public static void writeFile(String name,
                             char[] data)
                      throws IOException

Writes the given data to the specified file on disk

Parameters:

name - File path to write to

data - Data to write to the file

Throws:

IOException - if the file failed to write

getResource

public static InputStream getResource(String resource)

Get an InputStream for the given resource path, throws AssertionError if resource is not found

Parameters:

resource - Resource to get

Returns:

InputStream of the given resource

calculateSHA256

public static byte[] calculateSHA256(File file)

Calculate the SHA256 hash of a file

Parameters:

file - File to calculate the hash for

Returns:

A byte[] representation of the hash

calculateSHA1

public static byte[] calculateSHA1(File file)

Calculate the SHA1 hash of a file

Parameters:

file - File to calculate the hash for

Returns:

A byte[] representation of the hash

readAllBytes

public static byte[] readAllBytes(File file)

An android compatible version of Files.readAllBytes(java.nio.file.Path)

Parameters:

file - File to read bytes of

Returns:

The byte array of the file

readAllBytes

public static byte[] readAllBytes(InputStream stream)

Parameters:

stream - the InputStream to read off of

Returns:

the byte array of an InputStream

getGeneratedClassesForAnnotation

public static Set<Class<?>> getGeneratedClassesForAnnotation(Class<? extends Annotation> annotationClass)

Returns a set of all the classes that are annotated by a given annotation. Keep in mind that these are from a set of generated annotations generated at compile time by the annotation processor, meaning that arbitrary annotations cannot be passed into this method and expected to have a set of classes returned back.

Parameters:

annotationClass - the annotation class

Returns:

a set of all the classes annotated by the given annotation

getGeneratedClassesForAnnotation

public static Set<Class<?>> getGeneratedClassesForAnnotation(String input)

Returns a set of all the classes that are annotated by a given annotation. Keep in mind that these are from a set of generated annotations generated at compile time by the annotation processor, meaning that arbitrary annotations cannot be passed into this method and expected to have a set of classes returned back.

Parameters:

input - the fully qualified name of the annotation

Returns:

a set of all the classes annotated by the given annotation