Splits the parse function into more readable functions
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@ -1,10 +1,8 @@
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package net.knarcraft.ffmpegconverter.utility;
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import net.knarcraft.ffmpegconverter.parser.ConverterArgument;
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import net.knarcraft.ffmpegconverter.parser.ConverterArgumentValue;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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@ -18,86 +16,96 @@ public final class Parser {
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}
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/**
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* This function parses command inputs into understandable converter instructions
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* @param tokens <p>A list of tokens containing all arguments</p>
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* This function parses the input to understandable converter instructions
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* @param input <p>The input string to parse.</p>
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* @param validArguments <p>All arguments which are considered valid.</p>
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* @return <p>A map with all parsed arguments.</p>
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*/
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private static Map<String, String> parse(List<String> tokens) {
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String[] types = {"animeconverter", "audioconverter", "videoconverter"};
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ConverterArgument[] commonArgs = {
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new ConverterArgument("recursions", 'r', true, ConverterArgumentValue.INT),
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new ConverterArgument("infile", 'i', true, ConverterArgumentValue.STRING)
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};
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ConverterArgument[] animeArgs = {
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new ConverterArgument("audiolang", 'a', true, ConverterArgumentValue.COMMA_SEPARATED_LIST),
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new ConverterArgument("subtitlelang", 's', true, ConverterArgumentValue.COMMA_SEPARATED_LIST),
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new ConverterArgument("tostereo", 't', false, ConverterArgumentValue.BOOLEAN),
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new ConverterArgument("preventpartialsubtitles", 'p', false, ConverterArgumentValue.BOOLEAN)
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};
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ConverterArgument[] audioVideoArgs = {
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new ConverterArgument("-outext", 'o', true,
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ConverterArgumentValue.STRING)
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};
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String type = tokens.remove(0).toLowerCase();
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if (!ListUtil.listContains(types, s -> s.equals(type))) {
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throw new IllegalArgumentException("Unknown converter type chosen.");
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}
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if (tokens.size() < 2) {
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throw new IllegalArgumentException("No file/folder path in argument.");
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}
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List<ConverterArgument> converterArguments;
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switch (type) {
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case "animeconverter":
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converterArguments = new ArrayList<>(Arrays.asList(ListUtil.concatenate(commonArgs, animeArgs)));
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break;
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case "audioconverter":
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case "videoconverter":
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converterArguments = new ArrayList<>(Arrays.asList(ListUtil.concatenate(commonArgs, audioVideoArgs)));
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break;
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default:
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throw new IllegalArgumentException("Unknown converter type chosen.");
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}
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static Map<String, String> parse(String input, List<ConverterArgument> validArguments) {
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return parse(tokenize(input), validArguments);
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}
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/**
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* This function parses command inputs into understandable converter instructions
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*
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* @param tokens <p>A list of tokens containing all arguments</p>
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* @param validArguments <p>A list of arguments which are considered valid.</p>
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* @return <p>A map with all parsed arguments.</p>
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*/
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private static Map<String, String> parse(List<String> tokens, List<ConverterArgument> validArguments) {
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Map<String, String> parsedArguments = new HashMap<>();
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//TODO: Refactor and test this function
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while (!tokens.isEmpty()) {
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String currentToken = tokens.remove(0);
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List<ConverterArgument> foundArguments;
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if (currentToken.startsWith("--")) {
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String argumentName = currentToken.substring(2);
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foundArguments = ListUtil.getMatching(converterArguments, (item) -> item.getName().equals(argumentName));
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} else if (currentToken.startsWith("-")) {
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char argumentShorthand = currentToken.substring(1).charAt(0);
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foundArguments = ListUtil.getMatching(converterArguments, (item) -> item.getShorthand() == argumentShorthand);
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} else {
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throw new IllegalArgumentException("Unexpected value when not given an argument.");
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}
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if (foundArguments.isEmpty()) {
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throw new IllegalArgumentException(String.format("Invalid argument %s encountered.", currentToken));
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}
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ConverterArgument foundArgument = foundArguments.get(0);
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String argumentValue = tokens.get(0);
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boolean valueIsArgument = argumentValue.startsWith("-");
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if (valueIsArgument) {
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if (foundArgument.isValueRequired()) {
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throw new IllegalArgumentException(String.format("Argument %s requires a value, but no value was given.", foundArgument.getName()));
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} else {
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parsedArguments.put(foundArgument.getName(), "true");
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}
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} else {
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String value = tokens.remove(0);
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if (!foundArgument.testArgumentValue(value)) {
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throw new IllegalArgumentException(String.format("Invalid value %s for argument %s.", value, foundArgument.getName()));
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}
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parsedArguments.put(foundArgument.getName(), value);
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}
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parseArgument(tokens, validArguments, parsedArguments);
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}
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return parsedArguments;
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}
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/**
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* Parses the first found token as an argument
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*
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* @param tokens <p>The tokens to parse.</p>
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* @param converterArguments <p>A list of all the valid arguments in existence.</p>
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* @param parsedArguments <p>The map to store the parsed argument to.</p>
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*/
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private static void parseArgument(List<String> tokens, List<ConverterArgument> converterArguments, Map<String, String> parsedArguments) {
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String currentToken = tokens.remove(0);
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List<ConverterArgument> foundArguments;
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if (currentToken.startsWith("--")) {
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String argumentName = currentToken.substring(2);
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foundArguments = ListUtil.getMatching(converterArguments, (item) -> item.getName().equals(argumentName));
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} else if (currentToken.startsWith("-")) {
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char argumentShorthand = currentToken.substring(1).charAt(0);
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foundArguments = ListUtil.getMatching(converterArguments, (item) -> item.getShorthand() == argumentShorthand);
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} else {
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throw new IllegalArgumentException("Unexpected value when not given an argument.");
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}
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if (foundArguments.isEmpty()) {
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throw new IllegalArgumentException(String.format("Invalid argument %s encountered.", currentToken));
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}
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ConverterArgument foundArgument = foundArguments.get(0);
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storeArgumentValue(tokens, foundArgument, parsedArguments);
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}
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/**
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* Stores the value of a found argument to parsed arguments
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*
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* @param tokens <p>The token list to parse.</p>
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* @param foundArgument <p>The found argument to store.</p>
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* @param parsedArguments <p>The map to store parsed arguments to.</p>
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*/
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private static void storeArgumentValue(List<String> tokens, ConverterArgument foundArgument, Map<String, String> parsedArguments) {
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String argumentValue;
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if (tokens.isEmpty()) {
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argumentValue = "";
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} else {
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argumentValue = tokens.get(0);
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}
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boolean valueIsArgument = argumentValue.startsWith("-");
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if (valueIsArgument) {
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if (foundArgument.isValueRequired()) {
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throw new IllegalArgumentException(String.format("Argument %s requires a value, but no value was given.", foundArgument.getName()));
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} else {
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parsedArguments.put(foundArgument.getName(), "true");
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}
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} else {
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String value;
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if (tokens.isEmpty()) {
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value = "";
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} else {
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value = tokens.remove(0);
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}
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if (!foundArgument.testArgumentValue(value)) {
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throw new IllegalArgumentException(String.format("Invalid value %s for argument %s.", value, foundArgument.getName()));
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}
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parsedArguments.put(foundArgument.getName(), value);
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}
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}
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/**
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* Tokenizes a string
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*
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