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Diffstat (limited to '')
| -rw-r--r-- | src/main/java/de/pixart/messenger/utils/CharSequenceUtils.java | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/src/main/java/de/pixart/messenger/utils/CharSequenceUtils.java b/src/main/java/de/pixart/messenger/utils/CharSequenceUtils.java new file mode 100644 index 000000000..7a9d2f1fb --- /dev/null +++ b/src/main/java/de/pixart/messenger/utils/CharSequenceUtils.java @@ -0,0 +1,86 @@ +/* + * Copyright (c) 2018, Daniel Gultsch All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, this + * list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation and/or + * other materials provided with the distribution. + * + * 3. Neither the name of the copyright holder nor the names of its contributors + * may be used to endorse or promote products derived from this software without + * specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR + * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON + * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +package de.pixart.messenger.utils; + +import android.text.Spannable; + +import java.util.ArrayList; +import java.util.List; + +public class CharSequenceUtils { + + private static int getStartIndex(CharSequence input) { + int length = input.length(); + int index = 0; + while (Character.isWhitespace(input.charAt(index))) { + ++index; + if (index >= length) { + break; + } + } + return index; + } + + private static int getEndIndex(CharSequence input) { + int index = input.length() - 1; + while (Character.isWhitespace(input.charAt(index))) { + --index; + if (index < 0) { + break; + } + } + return index; + } + + public static CharSequence trim(CharSequence input) { + int begin = getStartIndex(input); + int end = getEndIndex(input); + if (begin > end) { + return ""; + } else { + return StylingHelper.subSequence(input, begin, end + 1); + } + } + + public static List<CharSequence> split(Spannable charSequence, char c) { + List<CharSequence> out = new ArrayList<>(); + int begin = 0; + for (int i = 0; i < charSequence.length(); ++i) { + if (charSequence.charAt(i) == c) { + out.add(StylingHelper.subSequence(charSequence, begin, i)); + begin = ++i; + } + } + if (begin < charSequence.length()) { + out.add(StylingHelper.subSequence(charSequence, begin, charSequence.length())); + } + return out; + } +}
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