| // Copyright (C) 2013 The Android Open Source Project |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| package com.google.gerrit.server.util; |
| |
| import static com.google.common.base.Preconditions.checkArgument; |
| |
| import com.google.common.base.Objects; |
| import com.google.common.base.Strings; |
| import com.google.gerrit.common.data.LabelType; |
| import com.google.gerrit.reviewdb.client.PatchSetApproval; |
| |
| /** A single vote on a label, consisting of a label name and a value. */ |
| public class LabelVote { |
| public static LabelVote parse(String text) { |
| checkArgument(!Strings.isNullOrEmpty(text), "Empty label vote"); |
| if (text.charAt(0) == '-') { |
| return new LabelVote(text.substring(1), (short) 0); |
| } |
| short sign = 0; |
| int i; |
| for (i = text.length() - 1; i >= 0; i--) { |
| int c = text.charAt(i); |
| if (c == '-') { |
| sign = (short) -1; |
| break; |
| } else if (c == '+') { |
| sign = (short) 1; |
| break; |
| } else if (!('0' <= c && c <= '9')) { |
| break; |
| } |
| } |
| if (sign == 0) { |
| return new LabelVote(text, (short) 1); |
| } |
| return new LabelVote(text.substring(0, i), |
| (short)(sign * Short.parseShort(text.substring(i + 1)))); |
| } |
| |
| public static LabelVote parseWithEquals(String text) { |
| checkArgument(!Strings.isNullOrEmpty(text), "Empty label vote"); |
| int e = text.lastIndexOf('='); |
| checkArgument(e >= 0, "Label vote missing '=': %s", text); |
| return new LabelVote(text.substring(0, e), |
| Short.parseShort(text.substring(e + 1), text.length())); |
| } |
| |
| private final String name; |
| private final short value; |
| |
| public LabelVote(String name, short value) { |
| this.name = LabelType.checkNameInternal(name); |
| this.value = value; |
| } |
| |
| public LabelVote(PatchSetApproval psa) { |
| this(psa.getLabel(), psa.getValue()); |
| } |
| |
| public String getLabel() { |
| return name; |
| } |
| |
| public short getValue() { |
| return value; |
| } |
| |
| public String format() { |
| if (value == (short) 0) { |
| return '-' + name; |
| } else if (value < 0) { |
| return name + value; |
| } else { |
| return name + '+' + value; |
| } |
| } |
| |
| public String formatWithEquals() { |
| if (value <= (short) 0) { |
| return name + '=' + value; |
| } else { |
| return name + "=+" + value; |
| } |
| } |
| |
| @Override |
| public boolean equals(Object o) { |
| if (o instanceof LabelVote) { |
| LabelVote l = (LabelVote) o; |
| return Objects.equal(name, l.name) |
| && value == l.value; |
| } |
| return false; |
| } |
| |
| @Override |
| public String toString() { |
| return format(); |
| } |
| } |