com.sun.tools.sjavac.Util Maven / Gradle / Ivy
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/*
* Copyright (c) 2012, 2016, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package com.sun.tools.sjavac;
import java.io.File;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.nio.file.Path;
import java.util.Arrays;
import java.util.Collection;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import java.util.StringTokenizer;
import java.util.function.Function;
import java.util.regex.Pattern;
import java.util.stream.Collectors;
import java.util.stream.Stream;
/**
* Utilities.
*
* This is NOT part of any supported API.
* If you write code that depends on this, you do so at your own risk.
* This code and its internal interfaces are subject to change or
* deletion without notice.
*/
public class Util {
public static String toFileSystemPath(String pkgId) {
if (pkgId == null || pkgId.length()==0) return null;
String pn;
if (pkgId.charAt(0) == ':') {
// When the module is the default empty module.
// Do not prepend the module directory, because there is none.
// Thus :java.foo.bar translates to java/foo/bar (or \)
pn = pkgId.substring(1).replace('.',File.separatorChar);
} else {
// There is a module. Thus jdk.base:java.foo.bar translates
// into jdk.base/java/foo/bar
int cp = pkgId.indexOf(':');
String mn = pkgId.substring(0,cp);
pn = mn+File.separatorChar+pkgId.substring(cp+1).replace('.',File.separatorChar);
}
return pn;
}
public static String justPackageName(String pkgName) {
int c = pkgName.indexOf(":");
if (c == -1)
throw new IllegalArgumentException("Expected ':' in package name (" + pkgName + ")");
return pkgName.substring(c+1);
}
public static String extractStringOption(String opName, String s) {
return extractStringOption(opName, s, null);
}
public static String extractStringOption(String opName, String s, String deflt) {
int p = s.indexOf(opName+"=");
if (p == -1) return deflt;
p+=opName.length()+1;
int pe = s.indexOf(',', p);
if (pe == -1) pe = s.length();
return s.substring(p, pe);
}
public static boolean extractBooleanOption(String opName, String s, boolean deflt) {
String str = extractStringOption(opName, s);
return "true".equals(str) ? true
: "false".equals(str) ? false
: deflt;
}
public static int extractIntOption(String opName, String s) {
return extractIntOption(opName, s, 0);
}
public static int extractIntOption(String opName, String s, int deflt) {
int p = s.indexOf(opName+"=");
if (p == -1) return deflt;
p+=opName.length()+1;
int pe = s.indexOf(',', p);
if (pe == -1) pe = s.length();
int v = 0;
try {
v = Integer.parseInt(s.substring(p, pe));
} catch (Exception e) {}
return v;
}
/**
* Extract the package name from a fully qualified class name.
*
* Example: Given "pkg.subpkg.A" this method returns ":pkg.subpkg".
* Given "C" this method returns ":".
*
* @returns package name of the given class name
*/
public static String pkgNameOfClassName(String fqClassName) {
int i = fqClassName.lastIndexOf('.');
String pkg = i == -1 ? "" : fqClassName.substring(0, i);
return ":" + pkg;
}
/**
* Clean out unwanted sub options supplied inside a primary option.
* For example to only had portfile remaining from:
* settings="--server:id=foo,portfile=bar"
* do settings = cleanOptions("--server:",Util.set("-portfile"),settings);
* now settings equals "--server:portfile=bar"
*
* @param allowedSubOptions A set of the allowed sub options, id portfile etc.
* @param s The option settings string.
*/
public static String cleanSubOptions(Set allowedSubOptions, String s) {
StringBuilder sb = new StringBuilder();
StringTokenizer st = new StringTokenizer(s, ",");
while (st.hasMoreTokens()) {
String o = st.nextToken();
int p = o.indexOf('=');
if (p>0) {
String key = o.substring(0,p);
String val = o.substring(p+1);
if (allowedSubOptions.contains(key)) {
if (sb.length() > 0) sb.append(',');
sb.append(key+"="+val);
}
}
}
return sb.toString();
}
/**
* Convenience method to create a set with strings.
*/
public static Set set(String... ss) {
Set set = new HashSet<>();
set.addAll(Arrays.asList(ss));
return set;
}
/**
* Normalize windows drive letter paths to upper case to enable string
* comparison.
*
* @param file File name to normalize
* @return The normalized string if file has a drive letter at the beginning,
* otherwise the original string.
*/
public static String normalizeDriveLetter(String file) {
if (file.length() > 2 && file.charAt(1) == ':') {
return Character.toUpperCase(file.charAt(0)) + file.substring(1);
} else if (file.length() > 3 && file.charAt(0) == '*'
&& file.charAt(2) == ':') {
// Handle a wildcard * at the beginning of the string.
return file.substring(0, 1) + Character.toUpperCase(file.charAt(1))
+ file.substring(2);
}
return file;
}
/**
* Locate the setting for the server properties.
*/
public static String findServerSettings(String[] args) {
for (String s : args) {
if (s.startsWith("--server:")) {
return s;
}
}
return null;
}
public static Set union(Set s1,
Set s2) {
Set union = new HashSet<>();
union.addAll(s1);
union.addAll(s2);
return union;
}
public static Set subtract(Set orig,
Set toSubtract) {
Set difference = new HashSet<>(orig);
difference.removeAll(toSubtract);
return difference;
}
public static String getStackTrace(Throwable t) {
StringWriter sw = new StringWriter();
t.printStackTrace(new PrintWriter(sw));
return sw.toString();
}
// TODO: Remove when refactoring from java.io.File to java.nio.file.Path.
public static File pathToFile(Path path) {
return path == null ? null : path.toFile();
}
public static Set intersection(Collection c1,
Collection c2) {
Set intersection = new HashSet(c1);
intersection.retainAll(c2);
return intersection;
}
public static Map indexBy(Collection c,
Function indexFunction) {
return c.stream().collect(Collectors.toMap(indexFunction, o -> o));
}
public static String fileSuffix(Path file) {
String fileNameStr = file.getFileName().toString();
int dotIndex = fileNameStr.indexOf('.');
return dotIndex == -1 ? "" : fileNameStr.substring(dotIndex);
}
public static Stream getLines(String str) {
return str.isEmpty()
? Stream.empty()
: Stream.of(str.split(Pattern.quote(System.lineSeparator())));
}
}