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com.android.tools.lint.checks.PluralsDatabase Maven / Gradle / Ivy
/*
* Copyright (C) 2014 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.android.tools.lint.checks;
import static com.android.tools.lint.checks.PluralsDatabase.Quantity.few;
import static com.android.tools.lint.checks.PluralsDatabase.Quantity.many;
import static com.android.tools.lint.checks.PluralsDatabase.Quantity.one;
import static com.android.tools.lint.checks.PluralsDatabase.Quantity.two;
import static com.android.tools.lint.checks.PluralsDatabase.Quantity.zero;
import com.android.annotations.NonNull;
import com.android.annotations.Nullable;
import com.android.tools.lint.detector.api.LintUtils;
import com.google.common.collect.Maps;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.EnumSet;
import java.util.List;
import java.util.Map;
/**
* Database used by the {@link PluralsDetector} to get information
* about plural forms for a given language
*/
public class PluralsDatabase {
private static final EnumSet NONE = EnumSet.noneOf(Quantity.class);
private static final PluralsDatabase sInstance = new PluralsDatabase();
private final Map> mPlurals = Maps.newHashMap();
/** Bit set if this language uses quantity zero */
@SuppressWarnings("PointlessBitwiseExpression")
static final int FLAG_ZERO = 1 << 0;
/** Bit set if this language uses quantity one */
static final int FLAG_ONE = 1 << 1;
/** Bit set if this language uses quantity two */
static final int FLAG_TWO = 1 << 2;
/** Bit set if this language uses quantity few */
static final int FLAG_FEW = 1 << 3;
/** Bit set if this language uses quantity many */
static final int FLAG_MANY = 1 << 4;
/** Bit set if this language has multiple values that match quantity zero */
static final int FLAG_MULTIPLE_ZERO = 1 << 5;
/** Bit set if this language has multiple values that match quantity one */
static final int FLAG_MULTIPLE_ONE = 1 << 6;
/** Bit set if this language has multiple values that match quantity two */
static final int FLAG_MULTIPLE_TWO = 1 << 7;
@NonNull
public static PluralsDatabase get() {
return sInstance;
}
private static int getFlags(@NonNull String language) {
int index = getLanguageIndex(language);
if (index != -1) {
return FLAGS[index];
}
return 0;
}
private static int getLanguageIndex(@NonNull String language) {
int index = Arrays.binarySearch(LANGUAGE_CODES, language);
if (index >= 0) {
assert LANGUAGE_CODES[index].equals(language);
return index;
} else {
return -1;
}
}
@Nullable
public EnumSet getRelevant(@NonNull String language) {
EnumSet set = mPlurals.get(language);
if (set == null) {
int index = getLanguageIndex(language);
if (index == -1) {
mPlurals.put(language, NONE);
return null;
}
// Process each item and look for relevance
int flag = FLAGS[index];
set = EnumSet.noneOf(Quantity.class);
if ((flag & FLAG_ZERO) != 0) {
set.add(zero);
}
if ((flag & FLAG_ONE) != 0) {
set.add(one);
}
if ((flag & FLAG_TWO) != 0) {
set.add(two);
}
if ((flag & FLAG_FEW) != 0) {
set.add(few);
}
if ((flag & FLAG_MANY) != 0) {
set.add(many);
}
mPlurals.put(language, set);
}
return set == NONE ? null : set;
}
@SuppressWarnings("MethodMayBeStatic")
public boolean hasMultipleValuesForQuantity(
@NonNull String language,
@NonNull Quantity quantity) {
if (quantity == one) {
return (getFlags(language) & FLAG_MULTIPLE_ONE) != 0;
} else if (quantity == two) {
return (getFlags(language) & FLAG_MULTIPLE_TWO) != 0;
} else {
return quantity == zero && (getFlags(language) & FLAG_MULTIPLE_ZERO) != 0;
}
}
@SuppressWarnings("MethodMayBeStatic")
@Nullable
public String findIntegerExamples(@NonNull String language, @NonNull Quantity quantity) {
if (quantity == one) {
return getExampleForQuantityOne(language);
} else if (quantity == two) {
return getExampleForQuantityTwo(language);
} else if (quantity == zero) {
return getExampleForQuantityZero(language);
} else {
return null;
}
}
public enum Quantity {
// deliberately lower case to match attribute names
few, many, one, two, zero, other;
@Nullable
public static Quantity get(@NonNull String name) {
for (Quantity quantity : values()) {
if (name.equals(quantity.name())) {
return quantity;
}
}
return null;
}
public static String formatSet(@NonNull EnumSet set) {
List list = new ArrayList(set.size());
for (Quantity quantity : set) {
list.add('`' + quantity.name() + '`');
}
return LintUtils.formatList(list, Integer.MAX_VALUE);
}
}
// GENERATED DATA.
// This data is generated by the #testDatabaseAccurate method in PluralsDatabaseTest
// which will generate the following if it can find an ICU plurals database file
// in the unit test data folder.
/** Set of language codes relevant to plurals data */
private static final String[] LANGUAGE_CODES = new String[] {
"af", "ak", "am", "ar", "as", "az", "be", "bg", "bh", "bm",
"bn", "bo", "br", "bs", "ca", "ce", "cs", "cy", "da", "de",
"dv", "dz", "ee", "el", "en", "eo", "es", "et", "eu", "fa",
"ff", "fi", "fo", "fr", "fy", "ga", "gd", "gl", "gu", "gv",
"ha", "he", "hi", "hr", "hu", "hy", "id", "ig", "ii", "in",
"is", "it", "iu", "iw", "ja", "ji", "jv", "ka", "kk", "kl",
"km", "kn", "ko", "ks", "ku", "kw", "ky", "lb", "lg", "ln",
"lo", "lt", "lv", "mg", "mk", "ml", "mn", "mr", "ms", "mt",
"my", "nb", "nd", "ne", "nl", "nn", "no", "nr", "ny", "om",
"or", "os", "pa", "pl", "ps", "pt", "rm", "ro", "ru", "se",
"sg", "si", "sk", "sl", "sn", "so", "sq", "sr", "ss", "st",
"sv", "sw", "ta", "te", "th", "ti", "tk", "tl", "tn", "to",
"tr", "ts", "ug", "uk", "ur", "uz", "ve", "vi", "vo", "wa",
"wo", "xh", "yi", "yo", "zh", "zu"
};
/**
* Relevant flags for each language (corresponding to each language listed
* in the same position in {@link #LANGUAGE_CODES})
*/
private static final int[] FLAGS = new int[] {
0x0002, 0x0042, 0x0042, 0x001f, 0x0042, 0x0002, 0x005a, 0x0002,
0x0042, 0x0000, 0x0042, 0x0000, 0x00de, 0x004a, 0x0002, 0x0002,
0x000a, 0x001f, 0x0002, 0x0002, 0x0002, 0x0000, 0x0002, 0x0002,
0x0002, 0x0002, 0x0002, 0x0002, 0x0002, 0x0042, 0x0042, 0x0002,
0x0002, 0x0042, 0x0002, 0x001e, 0x00ce, 0x0002, 0x0042, 0x00ce,
0x0002, 0x0016, 0x0042, 0x004a, 0x0002, 0x0042, 0x0000, 0x0000,
0x0000, 0x0000, 0x0042, 0x0002, 0x0006, 0x0016, 0x0000, 0x0002,
0x0000, 0x0002, 0x0002, 0x0002, 0x0000, 0x0042, 0x0000, 0x0002,
0x0002, 0x0006, 0x0002, 0x0002, 0x0002, 0x0042, 0x0000, 0x004a,
0x0063, 0x0042, 0x0042, 0x0002, 0x0002, 0x0042, 0x0000, 0x001a,
0x0000, 0x0002, 0x0002, 0x0002, 0x0002, 0x0002, 0x0002, 0x0002,
0x0002, 0x0002, 0x0002, 0x0002, 0x0042, 0x001a, 0x0002, 0x0042,
0x0002, 0x000a, 0x005a, 0x0006, 0x0000, 0x0042, 0x000a, 0x00ce,
0x0002, 0x0002, 0x0002, 0x004a, 0x0002, 0x0002, 0x0002, 0x0002,
0x0002, 0x0002, 0x0000, 0x0042, 0x0002, 0x0042, 0x0002, 0x0000,
0x0002, 0x0002, 0x0002, 0x005a, 0x0002, 0x0002, 0x0002, 0x0000,
0x0002, 0x0042, 0x0000, 0x0002, 0x0002, 0x0000, 0x0000, 0x0042
};
@Nullable
private static String getExampleForQuantityZero(@NonNull String language) {
int index = getLanguageIndex(language);
switch (index) {
// set14
case 72: // lv
return "0, 10~20, 30, 40, 50, 60, 100, 1000, 10000, 100000, 1000000, \u2026";
case -1:
default:
return null;
}
}
@Nullable
private static String getExampleForQuantityOne(@NonNull String language) {
int index = getLanguageIndex(language);
switch (index) {
// set1
case 2: // am
case 4: // as
case 10: // bn
case 29: // fa
case 38: // gu
case 42: // hi
case 61: // kn
case 77: // mr
case 135: // zu
return "0, 1";
// set11
case 50: // is
return "1, 21, 31, 41, 51, 61, 71, 81, 101, 1001, \u2026";
// set12
case 74: // mk
return "1, 11, 21, 31, 41, 51, 61, 71, 101, 1001, \u2026";
// set13
case 117: // tl
return "0~3, 5, 7, 8, 10~13, 15, 17, 18, 20, 21, 100, 1000, 10000, 100000, 1000000, \u2026";
// set14
case 72: // lv
return "1, 21, 31, 41, 51, 61, 71, 81, 101, 1001, \u2026";
// set2
case 30: // ff
case 33: // fr
case 45: // hy
return "0, 1";
// set20
case 13: // bs
case 43: // hr
case 107: // sr
return "1, 21, 31, 41, 51, 61, 71, 81, 101, 1001, \u2026";
// set21
case 36: // gd
return "1, 11";
// set22
case 103: // sl
return "1, 101, 201, 301, 401, 501, 601, 701, 1001, \u2026";
// set27
case 6: // be
return "1, 21, 31, 41, 51, 61, 71, 81, 101, 1001, \u2026";
// set28
case 71: // lt
return "1, 21, 31, 41, 51, 61, 71, 81, 101, 1001, \u2026";
// set30
case 98: // ru
case 123: // uk
return "1, 21, 31, 41, 51, 61, 71, 81, 101, 1001, \u2026";
// set31
case 12: // br
return "1, 21, 31, 41, 51, 61, 81, 101, 1001, \u2026";
// set33
case 39: // gv
return "1, 11, 21, 31, 41, 51, 61, 71, 101, 1001, \u2026";
// set4
case 101: // si
return "0, 1";
// set5
case 1: // ak
case 8: // bh
case 69: // ln
case 73: // mg
case 92: // pa
case 115: // ti
case 129: // wa
return "0, 1";
// set7
case 95: // pt
return "0, 1";
case -1:
default:
return null;
}
}
@Nullable
private static String getExampleForQuantityTwo(@NonNull String language) {
int index = getLanguageIndex(language);
switch (index) {
// set21
case 36: // gd
return "2, 12";
// set22
case 103: // sl
return "2, 102, 202, 302, 402, 502, 602, 702, 1002, \u2026";
// set31
case 12: // br
return "2, 22, 32, 42, 52, 62, 82, 102, 1002, \u2026";
// set33
case 39: // gv
return "2, 12, 22, 32, 42, 52, 62, 72, 102, 1002, \u2026";
case -1:
default:
return null;
}
}
}
