net.minecrell.workbench.tools.mapping.format.McpMappingFormat.java Source code

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Here is the source code for net.minecrell.workbench.tools.mapping.format.McpMappingFormat.java

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/*
 * Copyright (c) 2015, Minecrell <https://github.com/Minecrell>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
package net.minecrell.workbench.tools.mapping.format;

import static net.minecrell.workbench.tools.mapping.name.Name.Type.FIELD;
import static net.minecrell.workbench.tools.mapping.name.Name.Type.METHOD;

import com.google.common.base.Splitter;
import com.google.common.collect.ImmutableMap;
import net.minecrell.workbench.tools.mapping.BaseMappings;
import net.minecrell.workbench.tools.mapping.name.BaseName;
import net.minecrell.workbench.tools.mapping.name.Name;

import java.io.BufferedReader;
import java.io.IOException;
import java.util.Iterator;
import java.util.function.Consumer;

public final class McpMappingFormat {

    private McpMappingFormat() {
    }

    private static final Splitter CSV_SPLITTER = Splitter.on(',').limit(4);

    private static final char QUOTE_CHAR = '"';
    private static final String QUOTE = "\"\"\"";

    private static final char ESCAPE_CHAR = '\\';
    private static final char ESCAPED_NEWLINE = 'n';

    private static final char NEWLINE = '\n';

    public static BaseMappings.Builder read(BufferedReader reader, BaseMappings.Builder builder, Name.Type type)
            throws IOException {
        switch (type) {
        case FIELD:
            read(reader, builder.getFields(), FIELD);
            break;
        case METHOD:
            read(reader, builder.getMethods(), METHOD);
            break;
        case PARAMETER:
            readCsv(reader, parts -> builder.addParameter(parts.next(), parts.next()));
            break;
        }

        return builder;
    }

    private static void read(BufferedReader reader, ImmutableMap.Builder<String, BaseName> builder, Name.Type type)
            throws IOException {
        readCsv(reader, parts -> {
            String srg = parts.next();
            String mcp = parts.next();
            parts.next(); // Skip side
            String javadoc = parseJavadoc(parts.next());

            builder.put(srg, new BaseName(type, mcp, javadoc));
        });
    }

    private static void readCsv(BufferedReader reader, Consumer<Iterator<String>> consumer) throws IOException {
        String line;
        boolean first = true;
        while ((line = reader.readLine()) != null) {
            if ((line = line.trim()).isEmpty() || line.charAt(0) == '#') {
                continue;
            } else if (first) {
                first = false;
                continue;
            }

            consumer.accept(CSV_SPLITTER.split(line).iterator());
        }
    }

    private static String parseJavadoc(String javadoc) {
        if (javadoc.isEmpty()) {
            return "";
        }

        int len = javadoc.length();
        int start = 0;
        int end = len;

        if (javadoc.startsWith(QUOTE) && javadoc.endsWith(QUOTE)) {
            start = 3;
            end -= 3;
        } else if (javadoc.charAt(0) == QUOTE_CHAR && javadoc.charAt(len - 1) == QUOTE_CHAR) {
            start = 1;
            end -= 1;
        }

        int next = javadoc.indexOf(ESCAPE_CHAR);
        if (next == -1) {
            return javadoc.substring(start, end);
        }

        StringBuilder result = new StringBuilder(len);
        int pos = start;
        do {
            if (javadoc.charAt(next + 1) == ESCAPED_NEWLINE) {
                result.append(javadoc, pos, next);
                result.append(NEWLINE);
                pos = ++next + 1;
            }

            next = javadoc.indexOf(ESCAPE_CHAR, next + 1);
        } while (next != -1);

        if (pos < end) {
            result.append(javadoc, pos, end);
        }

        return result.toString();
    }

}