mirror of
https://github.com/Helium314/HeliBoard.git
synced 2025-06-05 22:30:12 +00:00
rename package
introduces weird bugs for some reason
This commit is contained in:
parent
8c40d4f3e8
commit
a91a90bfbd
312 changed files with 1620 additions and 1612 deletions
|
@ -0,0 +1,676 @@
|
|||
/*
|
||||
* Copyright (C) 2012 The Android Open Source Project
|
||||
* modified
|
||||
* SPDX-License-Identifier: Apache-2.0 AND GPL-3.0-only
|
||||
*/
|
||||
|
||||
package helium314.keyboard.latin.common;
|
||||
|
||||
import androidx.annotation.NonNull;
|
||||
import androidx.annotation.Nullable;
|
||||
|
||||
import helium314.keyboard.latin.utils.ScriptUtils;
|
||||
|
||||
import java.util.ArrayList;
|
||||
import java.util.Arrays;
|
||||
import java.util.Locale;
|
||||
|
||||
public final class StringUtils {
|
||||
|
||||
public static final int CAPITALIZE_NONE = 0; // No caps, or mixed case
|
||||
public static final int CAPITALIZE_FIRST = 1; // First only
|
||||
public static final int CAPITALIZE_ALL = 2; // All caps
|
||||
|
||||
@NonNull
|
||||
private static final String EMPTY_STRING = "";
|
||||
|
||||
private static final char CHAR_LINE_FEED = 0X000A;
|
||||
private static final char CHAR_VERTICAL_TAB = 0X000B;
|
||||
private static final char CHAR_FORM_FEED = 0X000C;
|
||||
private static final char CHAR_CARRIAGE_RETURN = 0X000D;
|
||||
private static final char CHAR_NEXT_LINE = 0X0085;
|
||||
private static final char CHAR_LINE_SEPARATOR = 0X2028;
|
||||
private static final char CHAR_PARAGRAPH_SEPARATOR = 0X2029;
|
||||
|
||||
private StringUtils() {
|
||||
// This utility class is not publicly instantiable.
|
||||
}
|
||||
|
||||
// Taken from android.text.TextUtils. We are extensively using this method in many places,
|
||||
// some of which don't have the android libraries available.
|
||||
|
||||
/**
|
||||
* Returns true if the string is null or 0-length.
|
||||
*
|
||||
* @param str the string to be examined
|
||||
* @return true if str is null or zero length
|
||||
*/
|
||||
public static boolean isEmpty(@Nullable final CharSequence str) {
|
||||
return (str == null || str.length() == 0);
|
||||
}
|
||||
|
||||
// Taken from android.text.TextUtils to cut the dependency to the Android framework.
|
||||
|
||||
/**
|
||||
* Returns a string containing the tokens joined by delimiters.
|
||||
*
|
||||
* @param delimiter the delimiter
|
||||
* @param tokens an array objects to be joined. Strings will be formed from
|
||||
* the objects by calling object.toString().
|
||||
*/
|
||||
@NonNull
|
||||
public static String join(@NonNull final CharSequence delimiter,
|
||||
@NonNull final Iterable<?> tokens) {
|
||||
final StringBuilder sb = new StringBuilder();
|
||||
boolean firstTime = true;
|
||||
for (final Object token : tokens) {
|
||||
if (firstTime) {
|
||||
firstTime = false;
|
||||
} else {
|
||||
sb.append(delimiter);
|
||||
}
|
||||
sb.append(token);
|
||||
}
|
||||
return sb.toString();
|
||||
}
|
||||
|
||||
// Taken from android.text.TextUtils to cut the dependency to the Android framework.
|
||||
|
||||
/**
|
||||
* Returns true if a and b are equal, including if they are both null.
|
||||
* <p><i>Note: In platform versions 1.1 and earlier, this method only worked well if
|
||||
* both the arguments were instances of String.</i></p>
|
||||
*
|
||||
* @param a first CharSequence to check
|
||||
* @param b second CharSequence to check
|
||||
* @return true if a and b are equal
|
||||
*/
|
||||
public static boolean equals(@Nullable final CharSequence a, @Nullable final CharSequence b) {
|
||||
if (a == b) {
|
||||
return true;
|
||||
}
|
||||
final int length;
|
||||
if (a != null && b != null && (length = a.length()) == b.length()) {
|
||||
if (a instanceof String && b instanceof String) {
|
||||
return a.equals(b);
|
||||
}
|
||||
for (int i = 0; i < length; i++) {
|
||||
if (a.charAt(i) != b.charAt(i)) {
|
||||
return false;
|
||||
}
|
||||
}
|
||||
return true;
|
||||
}
|
||||
return false;
|
||||
}
|
||||
|
||||
public static int codePointCount(@Nullable final CharSequence text) {
|
||||
if (isEmpty(text)) {
|
||||
return 0;
|
||||
}
|
||||
return Character.codePointCount(text, 0, text.length());
|
||||
}
|
||||
|
||||
@NonNull
|
||||
public static String newSingleCodePointString(final int codePoint) {
|
||||
if (Character.charCount(codePoint) == 1) {
|
||||
// Optimization: avoid creating a temporary array for characters that are
|
||||
// represented by a single char value
|
||||
return String.valueOf((char) codePoint);
|
||||
}
|
||||
// For surrogate pair
|
||||
return new String(Character.toChars(codePoint));
|
||||
}
|
||||
|
||||
public static boolean containsInArray(@NonNull final String text,
|
||||
@NonNull final String[] array) {
|
||||
for (final String element : array) {
|
||||
if (text.equals(element)) {
|
||||
return true;
|
||||
}
|
||||
}
|
||||
return false;
|
||||
}
|
||||
|
||||
/**
|
||||
* Comma-Splittable Text is similar to Comma-Separated Values (CSV) but has much simpler syntax.
|
||||
* Unlike CSV, Comma-Splittable Text has no escaping mechanism, so that the text can't contain
|
||||
* a comma character in it.
|
||||
*/
|
||||
@NonNull
|
||||
private static final String SEPARATOR_FOR_COMMA_SPLITTABLE_TEXT = ",";
|
||||
|
||||
public static boolean containsInCommaSplittableText(@NonNull final String text,
|
||||
@Nullable final String extraValues) {
|
||||
if (isEmpty(extraValues)) {
|
||||
return false;
|
||||
}
|
||||
return containsInArray(text, extraValues.split(SEPARATOR_FOR_COMMA_SPLITTABLE_TEXT));
|
||||
}
|
||||
|
||||
@NonNull
|
||||
public static String removeFromCommaSplittableTextIfExists(@NonNull final String text,
|
||||
@Nullable final String extraValues) {
|
||||
if (isEmpty(extraValues)) {
|
||||
return EMPTY_STRING;
|
||||
}
|
||||
final String[] elements = extraValues.split(SEPARATOR_FOR_COMMA_SPLITTABLE_TEXT);
|
||||
if (!containsInArray(text, elements)) {
|
||||
return extraValues;
|
||||
}
|
||||
final ArrayList<String> result = new ArrayList<>(elements.length - 1);
|
||||
for (final String element : elements) {
|
||||
if (!text.equals(element)) {
|
||||
result.add(element);
|
||||
}
|
||||
}
|
||||
return join(SEPARATOR_FOR_COMMA_SPLITTABLE_TEXT, result);
|
||||
}
|
||||
|
||||
/**
|
||||
* Remove duplicates from an array of strings.
|
||||
* <p>
|
||||
* This method will always keep the first occurrence of all strings at their position
|
||||
* in the array, removing the subsequent ones.
|
||||
*/
|
||||
public static void removeDupes(@NonNull final ArrayList<String> suggestions) {
|
||||
if (suggestions.size() < 2) {
|
||||
return;
|
||||
}
|
||||
int i = 1;
|
||||
// Don't cache suggestions.size(), since we may be removing items
|
||||
while (i < suggestions.size()) {
|
||||
final String cur = suggestions.get(i);
|
||||
// Compare each suggestion with each previous suggestion
|
||||
for (int j = 0; j < i; j++) {
|
||||
final String previous = suggestions.get(j);
|
||||
if (equals(cur, previous)) {
|
||||
suggestions.remove(i);
|
||||
i--;
|
||||
break;
|
||||
}
|
||||
}
|
||||
i++;
|
||||
}
|
||||
}
|
||||
|
||||
@NonNull
|
||||
public static String capitalizeFirstCodePoint(@NonNull final String s,
|
||||
@NonNull final Locale locale) {
|
||||
if (s.length() <= 1) {
|
||||
return s.toUpperCase(getLocaleUsedForToTitleCase(locale));
|
||||
}
|
||||
// Please refer to the comment below in
|
||||
// {@link #capitalizeFirstAndDowncaseRest(String,Locale)} as this has the same shortcomings
|
||||
final int cutoff = s.offsetByCodePoints(0, 1);
|
||||
return s.substring(0, cutoff).toUpperCase(getLocaleUsedForToTitleCase(locale))
|
||||
+ s.substring(cutoff);
|
||||
}
|
||||
|
||||
@NonNull
|
||||
public static String capitalizeFirstAndDowncaseRest(@NonNull final String s,
|
||||
@NonNull final Locale locale) {
|
||||
if (s.length() <= 1) {
|
||||
return s.toUpperCase(getLocaleUsedForToTitleCase(locale));
|
||||
}
|
||||
// TODO: fix the bugs below
|
||||
// - It does not work for Serbian, because it fails to account for the "lj" character,
|
||||
// which should be "Lj" in title case and "LJ" in upper case.
|
||||
// - It does not work for Dutch, because it fails to account for the "ij" digraph when it's
|
||||
// written as two separate code points. They are two different characters but both should
|
||||
// be capitalized as "IJ" as if they were a single letter in most words (not all). If the
|
||||
// unicode char for the ligature is used however, it works.
|
||||
final int cutoff = s.offsetByCodePoints(0, 1);
|
||||
return s.substring(0, cutoff).toUpperCase(getLocaleUsedForToTitleCase(locale))
|
||||
+ s.substring(cutoff).toLowerCase(locale);
|
||||
}
|
||||
|
||||
@NonNull
|
||||
public static int[] toCodePointArray(@NonNull final CharSequence charSequence) {
|
||||
return toCodePointArray(charSequence, 0, charSequence.length());
|
||||
}
|
||||
|
||||
@NonNull
|
||||
private static final int[] EMPTY_CODEPOINTS = {};
|
||||
|
||||
/**
|
||||
* Converts a range of a string to an array of code points.
|
||||
*
|
||||
* @param charSequence the source string.
|
||||
* @param startIndex the start index inside the string in java chars, inclusive.
|
||||
* @param endIndex the end index inside the string in java chars, exclusive.
|
||||
* @return a new array of code points. At most endIndex - startIndex, but possibly less.
|
||||
*/
|
||||
@NonNull
|
||||
public static int[] toCodePointArray(@NonNull final CharSequence charSequence,
|
||||
final int startIndex, final int endIndex) {
|
||||
final int length = charSequence.length();
|
||||
if (length <= 0) {
|
||||
return EMPTY_CODEPOINTS;
|
||||
}
|
||||
final int[] codePoints =
|
||||
new int[Character.codePointCount(charSequence, startIndex, endIndex)];
|
||||
copyCodePointsAndReturnCodePointCount(codePoints, charSequence, startIndex, endIndex,
|
||||
false /* downCase */);
|
||||
return codePoints;
|
||||
}
|
||||
|
||||
/**
|
||||
* Copies the codepoints in a CharSequence to an int array.
|
||||
* <p>
|
||||
* This method assumes there is enough space in the array to store the code points. The size
|
||||
* can be measured with Character#codePointCount(CharSequence, int, int) before passing to this
|
||||
* method. If the int array is too small, an ArrayIndexOutOfBoundsException will be thrown.
|
||||
* Also, this method makes no effort to be thread-safe. Do not modify the CharSequence while
|
||||
* this method is running, or the behavior is undefined.
|
||||
* This method can optionally downcase code points before copying them, but it pays no attention
|
||||
* to locale while doing so.
|
||||
*
|
||||
* @param destination the int array.
|
||||
* @param charSequence the CharSequence.
|
||||
* @param startIndex the start index inside the string in java chars, inclusive.
|
||||
* @param endIndex the end index inside the string in java chars, exclusive.
|
||||
* @param downCase if this is true, code points will be downcased before being copied.
|
||||
* @return the number of copied code points.
|
||||
*/
|
||||
public static int copyCodePointsAndReturnCodePointCount(@NonNull final int[] destination,
|
||||
@NonNull final CharSequence charSequence, final int startIndex, final int endIndex,
|
||||
final boolean downCase) {
|
||||
int destIndex = 0;
|
||||
for (int index = startIndex; index < endIndex;
|
||||
index = Character.offsetByCodePoints(charSequence, index, 1)) {
|
||||
final int codePoint = Character.codePointAt(charSequence, index);
|
||||
// TODO: stop using this, as it's not aware of the locale and does not always do
|
||||
// the right thing.
|
||||
destination[destIndex] = downCase ? Character.toLowerCase(codePoint) : codePoint;
|
||||
destIndex++;
|
||||
}
|
||||
return destIndex;
|
||||
}
|
||||
|
||||
@NonNull
|
||||
public static int[] toSortedCodePointArray(@NonNull final String string) {
|
||||
final int[] codePoints = toCodePointArray(string);
|
||||
Arrays.sort(codePoints);
|
||||
return codePoints;
|
||||
}
|
||||
|
||||
/**
|
||||
* Construct a String from a code point array
|
||||
*
|
||||
* @param codePoints a code point array that is null terminated when its logical length is
|
||||
* shorter than the array length.
|
||||
* @return a string constructed from the code point array.
|
||||
*/
|
||||
@NonNull
|
||||
public static String getStringFromNullTerminatedCodePointArray(
|
||||
@NonNull final int[] codePoints) {
|
||||
int stringLength = codePoints.length;
|
||||
for (int i = 0; i < codePoints.length; i++) {
|
||||
if (codePoints[i] == 0) {
|
||||
stringLength = i;
|
||||
break;
|
||||
}
|
||||
}
|
||||
return new String(codePoints, 0 /* offset */, stringLength);
|
||||
}
|
||||
|
||||
// This method assumes the text is not null. For the empty string, it returns CAPITALIZE_NONE.
|
||||
public static int getCapitalizationType(@NonNull final String text) {
|
||||
// If the first char is not uppercase, then the word is either all lower case or
|
||||
// camel case, and in either case we return CAPITALIZE_NONE.
|
||||
final int len = text.length();
|
||||
int index = 0;
|
||||
for (; index < len; index = text.offsetByCodePoints(index, 1)) {
|
||||
if (Character.isLetter(text.codePointAt(index))) {
|
||||
break;
|
||||
}
|
||||
}
|
||||
if (index == len) return CAPITALIZE_NONE;
|
||||
if (!Character.isUpperCase(text.codePointAt(index))) {
|
||||
return CAPITALIZE_NONE;
|
||||
}
|
||||
int capsCount = 1;
|
||||
int letterCount = 1;
|
||||
for (index = text.offsetByCodePoints(index, 1); index < len;
|
||||
index = text.offsetByCodePoints(index, 1)) {
|
||||
if (1 != capsCount && letterCount != capsCount) break;
|
||||
final int codePoint = text.codePointAt(index);
|
||||
if (Character.isUpperCase(codePoint)) {
|
||||
++capsCount;
|
||||
++letterCount;
|
||||
} else if (Character.isLetter(codePoint)) {
|
||||
// We need to discount non-letters since they may not be upper-case, but may
|
||||
// still be part of a word (e.g. single quote or dash, as in "IT'S" or "FULL-TIME")
|
||||
++letterCount;
|
||||
}
|
||||
}
|
||||
// We know the first char is upper case. So we want to test if either every letter other
|
||||
// than the first is lower case, or if they are all upper case. If the string is exactly
|
||||
// one char long, then we will arrive here with letterCount 1, and this is correct, too.
|
||||
if (1 == capsCount) return CAPITALIZE_FIRST;
|
||||
return (letterCount == capsCount ? CAPITALIZE_ALL : CAPITALIZE_NONE);
|
||||
}
|
||||
|
||||
public static boolean isIdenticalAfterUpcase(@NonNull final String text) {
|
||||
final int length = text.length();
|
||||
int i = 0;
|
||||
while (i < length) {
|
||||
final int codePoint = text.codePointAt(i);
|
||||
if (Character.isLetter(codePoint) && !Character.isUpperCase(codePoint)) {
|
||||
return false;
|
||||
}
|
||||
i += Character.charCount(codePoint);
|
||||
}
|
||||
return true;
|
||||
}
|
||||
|
||||
public static boolean isIdenticalAfterDowncase(@NonNull final String text) {
|
||||
final int length = text.length();
|
||||
int i = 0;
|
||||
while (i < length) {
|
||||
final int codePoint = text.codePointAt(i);
|
||||
if (Character.isLetter(codePoint) && !Character.isLowerCase(codePoint)) {
|
||||
return false;
|
||||
}
|
||||
i += Character.charCount(codePoint);
|
||||
}
|
||||
return true;
|
||||
}
|
||||
|
||||
public static boolean isIdenticalAfterCapitalizeEachWord(@NonNull final String text,
|
||||
@NonNull final int[] sortedSeparators) {
|
||||
boolean needsCapsNext = true;
|
||||
final int len = text.length();
|
||||
for (int i = 0; i < len; i = text.offsetByCodePoints(i, 1)) {
|
||||
final int codePoint = text.codePointAt(i);
|
||||
if (Character.isLetter(codePoint)) {
|
||||
if ((needsCapsNext && !Character.isUpperCase(codePoint))
|
||||
|| (!needsCapsNext && !Character.isLowerCase(codePoint))) {
|
||||
return false;
|
||||
}
|
||||
}
|
||||
// We need a capital letter next if this is a separator.
|
||||
needsCapsNext = (Arrays.binarySearch(sortedSeparators, codePoint) >= 0);
|
||||
}
|
||||
return true;
|
||||
}
|
||||
|
||||
// TODO: like capitalizeFirst*, this does not work perfectly for Dutch because of the IJ digraph
|
||||
// which should be capitalized together in *some* cases.
|
||||
@NonNull
|
||||
public static String capitalizeEachWord(@NonNull final String text,
|
||||
@NonNull final int[] sortedSeparators, @NonNull final Locale locale) {
|
||||
final StringBuilder builder = new StringBuilder();
|
||||
boolean needsCapsNext = true;
|
||||
final int len = text.length();
|
||||
for (int i = 0; i < len; i = text.offsetByCodePoints(i, 1)) {
|
||||
final String nextChar = text.substring(i, text.offsetByCodePoints(i, 1));
|
||||
if (needsCapsNext) {
|
||||
builder.append(nextChar.toUpperCase(locale));
|
||||
} else {
|
||||
builder.append(nextChar.toLowerCase(locale));
|
||||
}
|
||||
// We need a capital letter next if this is a separator.
|
||||
needsCapsNext = (Arrays.binarySearch(sortedSeparators, nextChar.codePointAt(0)) >= 0);
|
||||
}
|
||||
return builder.toString();
|
||||
}
|
||||
|
||||
/**
|
||||
* Approximates whether the text before the cursor looks like a URL.
|
||||
* <p>
|
||||
* This is not foolproof, but it should work well in the practice.
|
||||
* Essentially it walks backward from the cursor until it finds something that's not a letter,
|
||||
* digit, or common URL symbol like underscore. If it hasn't found a period yet, then it
|
||||
* does not look like a URL.
|
||||
* If the text:
|
||||
* - starts with www and contains a period
|
||||
* - starts with a slash preceded by either a slash, whitespace, or start-of-string
|
||||
* Then it looks like a URL and we return true. Otherwise, we return false.
|
||||
* <p>
|
||||
* Note: this method is called quite often, and should be fast.
|
||||
* <p>
|
||||
* TODO: This will return that "abc./def" and ".abc/def" look like URLs to keep down the
|
||||
* code complexity, but ideally it should not. It's acceptable for now.
|
||||
*/
|
||||
public static boolean lastPartLooksLikeURL(@NonNull final CharSequence text) {
|
||||
int i = text.length();
|
||||
if (0 == i) {
|
||||
return false;
|
||||
}
|
||||
int wCount = 0;
|
||||
int slashCount = 0;
|
||||
boolean hasSlash = false;
|
||||
boolean hasPeriod = false;
|
||||
int codePoint = 0;
|
||||
while (i > 0) {
|
||||
codePoint = Character.codePointBefore(text, i);
|
||||
if (codePoint < Constants.CODE_PERIOD || codePoint > 'z') {
|
||||
// Handwavy heuristic to see if that's a URL character. Anything between period
|
||||
// and z. This includes all lower- and upper-case ascii letters, period,
|
||||
// underscore, arrobase, question mark, equal sign. It excludes spaces, exclamation
|
||||
// marks, double quotes...
|
||||
// Anything that's not a URL-like character causes us to break from here and
|
||||
// evaluate normally.
|
||||
break;
|
||||
}
|
||||
if (Constants.CODE_PERIOD == codePoint) {
|
||||
hasPeriod = true;
|
||||
}
|
||||
if (Constants.CODE_SLASH == codePoint) {
|
||||
hasSlash = true;
|
||||
if (2 == ++slashCount) {
|
||||
return true;
|
||||
}
|
||||
} else {
|
||||
slashCount = 0;
|
||||
}
|
||||
if ('w' == codePoint) {
|
||||
++wCount;
|
||||
} else {
|
||||
wCount = 0;
|
||||
}
|
||||
i = Character.offsetByCodePoints(text, i, -1);
|
||||
}
|
||||
// End of the text run.
|
||||
// If it starts with www and includes a period, then it looks like a URL.
|
||||
if (wCount >= 3 && hasPeriod) {
|
||||
return true;
|
||||
}
|
||||
// If it starts with a slash, and the code point before is whitespace, it looks like an URL.
|
||||
if (1 == slashCount && (0 == i || Character.isWhitespace(codePoint))) {
|
||||
return true;
|
||||
}
|
||||
// If it has both a period and a slash, it looks like an URL.
|
||||
return hasPeriod && hasSlash;
|
||||
// Otherwise, it doesn't look like an URL.
|
||||
}
|
||||
|
||||
/**
|
||||
* Examines the string and returns whether we're inside a double quote.
|
||||
* <p>
|
||||
* This is used to decide whether we should put an automatic space before or after a double
|
||||
* quote character. If we're inside a quotation, then we want to close it, so we want a space
|
||||
* after and not before. Otherwise, we want to open the quotation, so we want a space before
|
||||
* and not after. Exception: after a digit, we never want a space because the "inch" or
|
||||
* "minutes" use cases is dominant after digits.
|
||||
* In the practice, we determine whether we are in a quotation or not by finding the previous
|
||||
* double quote character, and looking at whether it's followed by whitespace. If so, that
|
||||
* was a closing quotation mark, so we're not inside a double quote. If it's not followed
|
||||
* by whitespace, then it was an opening quotation mark, and we're inside a quotation.
|
||||
* However, on the way to the double quote we can determine, some double quotes might be
|
||||
* ignored, e.g. because they are followed by punctuation. These double quotes are counted and
|
||||
* taken into account.
|
||||
*
|
||||
* @param text the text to examine.
|
||||
* @return whether we're inside a double quote.
|
||||
*/
|
||||
public static boolean isInsideDoubleQuoteOrAfterDigit(@NonNull final CharSequence text) {
|
||||
int i = text.length();
|
||||
if (0 == i) {
|
||||
return false;
|
||||
}
|
||||
int codePoint = Character.codePointBefore(text, i);
|
||||
if (Character.isDigit(codePoint)) {
|
||||
return true;
|
||||
}
|
||||
int prevCodePoint = 0;
|
||||
int ignoredDoubleQuoteCount = 0;
|
||||
while (i > 0) {
|
||||
codePoint = Character.codePointBefore(text, i);
|
||||
if (Constants.CODE_DOUBLE_QUOTE == codePoint) {
|
||||
// If we see a double quote followed by whitespace, then that
|
||||
// was a closing quote.
|
||||
if (Character.isWhitespace(prevCodePoint)) {
|
||||
return ignoredDoubleQuoteCount % 2 == 1;
|
||||
}
|
||||
}
|
||||
if (Character.isWhitespace(codePoint) && Constants.CODE_DOUBLE_QUOTE == prevCodePoint) {
|
||||
// If we see a double quote preceded by whitespace, then that
|
||||
// was an opening quote. No need to continue seeking.
|
||||
return ignoredDoubleQuoteCount % 2 == 0;
|
||||
}
|
||||
if (Constants.CODE_DOUBLE_QUOTE == prevCodePoint) {
|
||||
ignoredDoubleQuoteCount++;
|
||||
}
|
||||
i -= Character.charCount(codePoint);
|
||||
prevCodePoint = codePoint;
|
||||
}
|
||||
// We reached the start of text. If the first char is a double quote, then we're inside
|
||||
// a double quote. Otherwise we're not.
|
||||
if (ignoredDoubleQuoteCount % 2 == 0)
|
||||
return Constants.CODE_DOUBLE_QUOTE == codePoint;
|
||||
else
|
||||
return Constants.CODE_DOUBLE_QUOTE != codePoint;
|
||||
}
|
||||
|
||||
public static boolean isEmptyStringOrWhiteSpaces(@NonNull final String s) {
|
||||
final int N = codePointCount(s);
|
||||
for (int i = 0; i < N; ++i) {
|
||||
if (!Character.isWhitespace(s.codePointAt(i))) {
|
||||
return false;
|
||||
}
|
||||
}
|
||||
return true;
|
||||
}
|
||||
|
||||
private static final String LANGUAGE_GREEK = "el";
|
||||
|
||||
@NonNull
|
||||
private static Locale getLocaleUsedForToTitleCase(@NonNull final Locale locale) {
|
||||
// In Greek locale {@link String#toUpperCase(Locale)} eliminates accents from its result.
|
||||
// In order to get accented upper case letter, {@link Locale#ROOT} should be used.
|
||||
if (LANGUAGE_GREEK.equals(locale.getLanguage())) {
|
||||
return Locale.ROOT;
|
||||
}
|
||||
return locale;
|
||||
}
|
||||
|
||||
@Nullable
|
||||
public static String toTitleCaseOfKeyLabel(@Nullable final String label,
|
||||
@NonNull final Locale locale) {
|
||||
if (label == null || !ScriptUtils.scriptSupportsUppercase(locale)) {
|
||||
return label;
|
||||
}
|
||||
if (label.equals("ß"))
|
||||
return "ẞ"; // upcasing of standalone ß, SS is not useful as s is on the keyboard anyway
|
||||
|
||||
return label.toUpperCase(getLocaleUsedForToTitleCase(locale));
|
||||
}
|
||||
|
||||
public static int toTitleCaseOfKeyCode(final int code, @NonNull final Locale locale) {
|
||||
if (!Constants.isLetterCode(code)) {
|
||||
return code;
|
||||
}
|
||||
final String label = newSingleCodePointString(code);
|
||||
final String titleCaseLabel = toTitleCaseOfKeyLabel(label, locale);
|
||||
return codePointCount(titleCaseLabel) == 1
|
||||
? titleCaseLabel.codePointAt(0) : Constants.CODE_UNSPECIFIED;
|
||||
}
|
||||
|
||||
public static int getTrailingSingleQuotesCount(@NonNull final CharSequence charSequence) {
|
||||
final int lastIndex = charSequence.length() - 1;
|
||||
int i = lastIndex;
|
||||
while (i >= 0 && charSequence.charAt(i) == Constants.CODE_SINGLE_QUOTE) {
|
||||
--i;
|
||||
}
|
||||
return lastIndex - i;
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns whether the last composed word contains line-breaking character (e.g. CR or LF).
|
||||
*
|
||||
* @param text the text to be examined.
|
||||
* @return {@code true} if the last composed word contains line-breaking separator.
|
||||
*/
|
||||
public static boolean hasLineBreakCharacter(@Nullable final String text) {
|
||||
if (isEmpty(text)) {
|
||||
return false;
|
||||
}
|
||||
for (int i = text.length() - 1; i >= 0; --i) {
|
||||
final char c = text.charAt(i);
|
||||
switch (c) {
|
||||
case CHAR_LINE_FEED:
|
||||
case CHAR_VERTICAL_TAB:
|
||||
case CHAR_FORM_FEED:
|
||||
case CHAR_CARRIAGE_RETURN:
|
||||
case CHAR_NEXT_LINE:
|
||||
case CHAR_LINE_SEPARATOR:
|
||||
case CHAR_PARAGRAPH_SEPARATOR:
|
||||
return true;
|
||||
}
|
||||
}
|
||||
return false;
|
||||
}
|
||||
|
||||
public static boolean mightBeEmoji(final String s) {
|
||||
int offset = 0;
|
||||
final int length = s.length();
|
||||
while (offset < length) {
|
||||
int c = Character.codePointAt(s, offset);
|
||||
if (mightBeEmoji(c))
|
||||
return true;
|
||||
offset += Character.charCount(c);
|
||||
}
|
||||
return false;
|
||||
}
|
||||
|
||||
// unicode blocks that contain emojis
|
||||
// very fast check, but there are very few blocks that exclusively contain emojis,
|
||||
public static boolean mightBeEmoji(final int c) {
|
||||
return (0x200D <= c && c <= 0x2BFF) // unicode blocks from General Punctuation to Miscellaneous Symbols and Arrows
|
||||
|| (0x1F104 <= c && c <= 0x1FAFF) // unicode blocks from Mahjong Tiles to Symbols and Pictographs Extended-A
|
||||
|| (0xE0000 <= c && c <= 0xE007F) // unicode block Tags
|
||||
|| c == 0xFE0F; // variation selector emoji with color
|
||||
}
|
||||
|
||||
public static boolean isLowerCaseAscii(final String s) {
|
||||
final int length = s.length();
|
||||
for (int i = 0; i < length; i++) {
|
||||
final int c = s.charAt(i);
|
||||
if (c < 97 || c > 122) return false;
|
||||
}
|
||||
return true;
|
||||
}
|
||||
|
||||
public static int charIndexOfFirstWhitespace(final CharSequence s) {
|
||||
for (int i = 0; i < s.length() - 1; i++) {
|
||||
final char c = s.charAt(i);
|
||||
if (Character.isWhitespace(c)) {
|
||||
return i + 1;
|
||||
}
|
||||
}
|
||||
return -1;
|
||||
}
|
||||
|
||||
public static int charIndexOfLastWhitespace(final CharSequence s) {
|
||||
for (int i = s.length() - 1; i >= 0; i--) {
|
||||
final char c = s.charAt(i);
|
||||
if (Character.isWhitespace(c)) {
|
||||
return i + 1;
|
||||
}
|
||||
}
|
||||
return -1;
|
||||
}
|
||||
}
|
Loading…
Add table
Add a link
Reference in a new issue