94 lines
3.1 KiB
Java
94 lines
3.1 KiB
Java
package ch.epfl.javass.net;
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import java.nio.charset.StandardCharsets;
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import java.util.Base64;
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/**
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* Methods to serialize object into byte sequences to transmit them in a network.
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* @author Charles BEAUVILLE
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* @author Celia HOUSSIAUX
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*
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*/
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public final class StringSerializer {
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private static final int HEX_RADIX = 16;
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private StringSerializer() {}
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/**
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* Serializes a given {@link Integer} into its base 16 textual representation.
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* @param i the {@link Integer} to serialize
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* @return a {@link String} the base 16 representation of the given int.
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*/
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public static String serializeInt(int i) {
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return Integer.toUnsignedString(i, HEX_RADIX);
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}
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/**
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* Takes a the string representation of an int and returns the actual {@link Integer}.
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* @param s the string that needs to be deserialized into an {@link Integer}.
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* @return the {@link Integer} represented by the string.
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*/
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public static int deserializeInt(String s) {
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return Integer.parseUnsignedInt(s, HEX_RADIX);
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}
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/**
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* Serializes a given {@link Long} into its base 16 textual representation.
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* @param l the {@link Long} to serialize.
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* @return a {@link String} the base 16 representation of the given long.
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*/
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public static String serializeLong(long l) {
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return Long.toUnsignedString(l, HEX_RADIX);
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}
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/**
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* Takes a the string representation of an int and returns the actual {@link Long}.
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* @param s the string that needs to be deserialized into an {@link Long}.
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* @return the {@link Long} represented by the string.
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*/
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public static long deserializeLong(String s) {
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return Long.parseLong(s, HEX_RADIX);
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}
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/**
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* Encodes the given string to base 64.
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* @param s the string to encode.
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* @return the encoded string.
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*/
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public static String serializeString(String s) {
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Base64.Encoder e = Base64.getEncoder();
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return e.encodeToString(s.getBytes(StandardCharsets.UTF_8));
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}
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/**
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* Decodes the given string from base 64.
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* @param s the string to decode.
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* @return the decoded string.
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*/
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public static String deserializeString(String s) {
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Base64.Decoder d = Base64.getDecoder();
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return new String(d.decode(s), StandardCharsets.UTF_8);
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}
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/**
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* Combines the strings given in the array, separated by the given character.
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* @param c the character to separate the strings.
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* @param strings the array of strings to be combined.
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* @return a string constiting of the strings of the array separated by the given character.
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*/
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public static String combine(char c, String[] strings) {
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return String.join(String.valueOf(c), strings);
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}
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/**
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* Splits at the given character a string into an array of strings.
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* @param c the character that separates the strings.
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* @param s the string to be split.
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* @return the array of the strings in between the given character.
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*/
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public static String[] split(char c, String s) {
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return s.split(String.valueOf(c));
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}
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}
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