50 lines
1.4 KiB
Java
50 lines
1.4 KiB
Java
package org.schabi.newpipe.extractor.utils;
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import javax.annotation.Nonnull;
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public final class StringUtils {
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private StringUtils() {
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}
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/**
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* @param string The string to search in.
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* @param start A string from which to start searching.
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* @return A substring where each '{' matches a '}'.
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* @throws IndexOutOfBoundsException If {@code string} does not contain {@code start}
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* or parenthesis could not be matched .
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*/
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@Nonnull
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public static String matchToClosingParenthesis(@Nonnull final String string,
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@Nonnull final String start) {
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int startIndex = string.indexOf(start);
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if (startIndex < 0) {
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throw new IndexOutOfBoundsException();
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}
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startIndex += start.length();
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int endIndex = startIndex;
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while (string.charAt(endIndex) != '{') {
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++endIndex;
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}
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++endIndex;
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int openParenthesis = 1;
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while (openParenthesis > 0) {
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switch (string.charAt(endIndex)) {
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case '{':
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++openParenthesis;
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break;
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case '}':
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--openParenthesis;
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break;
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default:
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break;
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}
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++endIndex;
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}
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return string.substring(startIndex, endIndex);
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}
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}
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