43 lines
1.3 KiB
Java
43 lines
1.3 KiB
Java
/*
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* Copyright 2019, OpenTelemetry Authors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package io.opentelemetry.internal;
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/** Internal utility methods for working with tag keys, tag values, and metric names. */
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public final class StringUtils {
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/**
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* Determines whether the {@code String} contains only printable characters.
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*
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* @param str the {@code String} to be validated.
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* @return whether the {@code String} contains only printable characters.
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*/
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public static boolean isPrintableString(String str) {
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for (int i = 0; i < str.length(); i++) {
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if (!isPrintableChar(str.charAt(i))) {
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return false;
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}
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}
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return true;
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}
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private static boolean isPrintableChar(char ch) {
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return ch >= ' ' && ch <= '~';
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}
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private StringUtils() {}
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}
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