| /* |
| * Copyright (C) 2018, Google LLC. and others |
| * |
| * This program and the accompanying materials are made available under the |
| * terms of the Eclipse Distribution License v. 1.0 which is available at |
| * https://www.eclipse.org/org/documents/edl-v10.php. |
| * |
| * SPDX-License-Identifier: BSD-3-Clause |
| */ |
| package org.eclipse.jgit.internal.transport.parser; |
| |
| import static java.util.Arrays.asList; |
| import static java.util.Collections.emptySet; |
| import static java.util.Collections.unmodifiableSet; |
| import static java.util.stream.Collectors.toSet; |
| |
| import java.util.Set; |
| |
| import org.eclipse.jgit.annotations.NonNull; |
| |
| /** |
| * In a push, the client sends a list of commands. The first command |
| * is special, as it can include a list of capabilities at its end. |
| * <p> |
| * For example: |
| * "oid oid name\0cap1 cap cap3" |
| * <p> |
| * Not to be confused with {@link FirstWant}, nor with the first line |
| * of the reference advertisement parsed by |
| * {@code BasePackConnection.readAdvertisedRefs}. |
| * <p> |
| * This class parses the inputted command line and holds the results: |
| * the actual command line and the capabilities. |
| */ |
| public final class FirstCommand { |
| private final String line; |
| private final Set<String> capabilities; |
| |
| /** |
| * Parse the first line of a receive-pack request. |
| * |
| * @param line |
| * line from the client. |
| * @return an instance of FirstCommand with capabilities parsed out |
| */ |
| @NonNull |
| public static FirstCommand fromLine(String line) { |
| int nul = line.indexOf('\0'); |
| if (nul < 0) { |
| return new FirstCommand(line, emptySet()); |
| } |
| Set<String> opts = |
| asList(line.substring(nul + 1).split(" ")) //$NON-NLS-1$ |
| .stream() |
| .collect(toSet()); |
| return new FirstCommand(line.substring(0, nul), unmodifiableSet(opts)); |
| } |
| |
| private FirstCommand(String line, Set<String> capabilities) { |
| this.line = line; |
| this.capabilities = capabilities; |
| } |
| |
| /** @return non-capabilities part of the line. */ |
| @NonNull |
| public String getLine() { |
| return line; |
| } |
| |
| /** @return capabilities parsed from the line, as an immutable set. */ |
| @NonNull |
| public Set<String> getCapabilities() { |
| return capabilities; |
| } |
| } |