org.gradle.util.TextUtil Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of gradle-api Show documentation
Show all versions of gradle-api Show documentation
Gradle 6.9.1 API redistribution.
/*
* Copyright 2010 the original author or authors.
*
* 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 org.gradle.util;
import com.google.common.base.Function;
import com.google.common.base.Joiner;
import com.google.common.collect.Iterables;
import org.apache.commons.lang.StringEscapeUtils;
import org.gradle.internal.SystemProperties;
import javax.annotation.Nullable;
import java.io.File;
import java.util.Arrays;
import java.util.regex.Pattern;
public class TextUtil {
private static final Pattern WHITESPACE = Pattern.compile("\\s*");
private static final Pattern UPPER_CASE = Pattern.compile("(?=\\p{Upper})");
private static final Joiner KEBAB_JOINER = Joiner.on("-");
private static final Function TO_LOWERCASE = new Function() {
@Override
public String apply(String input) {
return input.toLowerCase();
}
};
private static final Pattern NON_UNIX_LINE_SEPARATORS = Pattern.compile("\r\n|\r");
/**
* Returns the line separator for Windows.
*/
public static String getWindowsLineSeparator() {
return "\r\n";
}
/**
* Returns the line separator for Unix.
*/
public static String getUnixLineSeparator() {
return "\n";
}
/**
* Returns the line separator for this platform.
*/
public static String getPlatformLineSeparator() {
return SystemProperties.getInstance().getLineSeparator();
}
/**
* Converts all line separators in the specified string to the specified line separator.
*/
@Nullable
public static String convertLineSeparators(@Nullable String str, String sep) {
return str == null ? null : replaceLineSeparatorsOf(str, sep);
}
/**
* Converts all line separators in the specified non-null string to the Unix line separator {@code \n}.
*/
public static String convertLineSeparatorsToUnix(String str) {
return replaceAll(NON_UNIX_LINE_SEPARATORS, str, "\n");
}
/**
* Converts all line separators in the specified non-null {@link CharSequence} to the specified line separator.
*/
public static String replaceLineSeparatorsOf(CharSequence string, String bySeparator) {
return replaceAll("\r\n|\r|\n", string, bySeparator);
}
private static String replaceAll(String regex, CharSequence inString, String byString) {
return replaceAll(Pattern.compile(regex), inString, byString);
}
private static String replaceAll(Pattern pattern, CharSequence inString, String byString) {
return pattern.matcher(inString).replaceAll(byString);
}
/**
* Converts all line separators in the specified string to the platform's line separator.
*/
public static String toPlatformLineSeparators(String str) {
return str == null ? null : replaceLineSeparatorsOf(str, getPlatformLineSeparator());
}
/**
* Converts all line separators in the specified nullable string to a single new line character ({@code \n}).
*
* @return null if the given string is null
*/
@Nullable
public static String normaliseLineSeparators(@Nullable String str) {
return str == null ? null : convertLineSeparatorsToUnix(str);
}
/**
* Converts all native file separators in the specified string to '/'.
*/
public static String normaliseFileSeparators(String path) {
return path.replace(File.separatorChar, '/');
}
/**
* Escapes the toString() representation of {@code obj} for use in a literal string.
* This is useful for interpolating variables into script strings, as well as in other situations.
*/
public static String escapeString(Object obj) {
return obj == null ? null : StringEscapeUtils.escapeJava(obj.toString());
}
/**
* Tells whether the specified string contains any whitespace characters.
*/
public static boolean containsWhitespace(String str) {
for (int i = 0; i < str.length(); i++) {
if (Character.isWhitespace(str.charAt(i))) {
return true;
}
}
return false;
}
/**
* Indents every line of {@code text} by {@code indent}. Empty lines
* and lines that only contain whitespace are not indented.
*/
public static String indent(String text, String indent) {
StringBuilder builder = new StringBuilder();
String[] lines = text.split("\n");
for (int i = 0; i < lines.length; i++) {
String line = lines[i];
if (!WHITESPACE.matcher(line).matches()) {
builder.append(indent);
}
builder.append(line);
if (i < lines.length - 1) {
builder.append('\n');
}
}
return builder.toString();
}
public static String shorterOf(String s1, String s2) {
if (s2.length() >= s1.length()) {
return s1;
} else {
return s2;
}
}
/**
* Same behavior as Groovy minus operator between Strings
*
* @param originalString original string
* @param removeString string to remove
* @return string with removeString removed or the original string if it did not contain removeString
*/
public static String minus(String originalString, String removeString) {
String s = originalString.toString();
int index = s.indexOf(removeString);
if (index == -1) {
return s;
}
int end = index + removeString.length();
if (s.length() > end) {
return s.substring(0, index) + s.substring(end);
}
return s.substring(0, index);
}
public static String normaliseFileAndLineSeparators(String in) {
return normaliseLineSeparators(normaliseFileSeparators(in));
}
public static String camelToKebabCase(String camelCase) {
return KEBAB_JOINER.join(Iterables.transform(Arrays.asList(UPPER_CASE.split(camelCase)), TO_LOWERCASE));
}
}