/*
*
* Copyright 2001-2004 The Ant-Contrib project
*
* 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 net.sf.antcontrib.cpptasks;
import java.io.File;
import java.io.IOException;
import java.util.Enumeration;
import java.util.Hashtable;
import java.util.StringTokenizer;
import java.util.Vector;
import org.apache.tools.ant.BuildException;
import org.apache.tools.ant.Project;
import org.apache.tools.ant.taskdefs.Execute;
import org.apache.tools.ant.taskdefs.LogStreamHandler;
import org.apache.tools.ant.types.Commandline;
import org.apache.tools.ant.types.Environment;
import org.apache.tools.ant.util.StringUtils;
/**
* Some utilities used by the CC and Link tasks.
*
* @author Adam Murdoch
* @author Curt Arnold
*/
public class CUtil {
/**
* A class that splits a white-space, comma-separated list into a String
* array. Used for task attributes.
*/
public static final class StringArrayBuilder {
private String[] _value;
public StringArrayBuilder(String value) {
// Split the defines up
StringTokenizer tokens = new StringTokenizer(value, ", ");
Vector vallist = new Vector();
while (tokens.hasMoreTokens()) {
String val = tokens.nextToken().trim();
if (val.length() == 0) {
continue;
}
vallist.addElement(val);
}
_value = new String[vallist.size()];
vallist.copyInto(_value);
}
public String[] getValue() {
return _value;
}
}
/**
* Adds the elements of the array to the given vector
*/
public static void addAll(Vector dest, Object[] src) {
if (src == null) {
return;
}
for (int i = 0; i < src.length; i++) {
dest.addElement(src[i]);
}
}
/**
* Checks a array of names for non existent or non directory entries and
* nulls them out.
*
* @return Count of non-null elements
*/
public static int checkDirectoryArray(String[] names) {
int count = 0;
for (int i = 0; i < names.length; i++) {
if (names[i] != null) {
File dir = new File(names[i]);
if (dir.exists() && dir.isDirectory()) {
count++;
} else {
names[i] = null;
}
}
}
return count;
}
/**
* Extracts the basename of a file, removing the extension, if present
*/
public static String getBasename(File file) {
String path = file.getPath();
// Remove the extension
String basename = file.getName();
int pos = basename.lastIndexOf('.');
if (pos != -1) {
basename = basename.substring(0, pos);
}
return basename;
}
/**
* Gets the parent directory for the executable file name using the current
* directory and system executable path
*
* @param exeName
* Name of executable such as "cl.exe"
* @return parent directory or null if not located
*/
public static File getExecutableLocation(String exeName) {
//
// must add current working directory to the
// from of the path from the "path" environment variable
File currentDir = new File(System.getProperty("user.dir"));
if (new File(currentDir, exeName).exists()) {
return currentDir;
}
File[] envPath = CUtil.getPathFromEnvironment("PATH",
File.pathSeparator);
for (int i = 0; i < envPath.length; i++) {
if (new File(envPath[i], exeName).exists()) {
return envPath[i];
}
}
return null;
}
/**
* Extracts the parent of a file
*/
public static String getParentPath(String path) {
int pos = path.lastIndexOf(File.separator);
if (pos <= 0) {
return null;
}
return path.substring(0, pos);
}
/**
* Returns an array of File for each existing directory in the specified
* environment variable
*
* @param envVariable
* environment variable name such as "LIB" or "INCLUDE"
* @param delim
* delimitor used to separate parts of the path, typically ";"
* or ":"
* @return array of File's for each part that is an existing directory
*/
public static File[] getPathFromEnvironment(String envVariable, String delim) {
// OS/4000 does not support the env command.
if (System.getProperty("os.name").equals("OS/400"))
return new File[]{};
Vector osEnv = Execute.getProcEnvironment();
String match = envVariable.concat("=");
for (Enumeration e = osEnv.elements(); e.hasMoreElements();) {
String entry = ((String) e.nextElement()).trim();
if (entry.length() > match.length()) {
String entryFrag = entry.substring(0, match.length());
if (entryFrag.equalsIgnoreCase(match)) {
String path = entry.substring(match.length());
return parsePath(path, delim);
}
}
}
File[] noPath = new File[0];
return noPath;
}
/**
* Returns a relative path for the targetFile relative to the base
* directory.
*
* @param base
* base directory as returned by File.getCanonicalPath()
* @param targetFile
* target file
* @return relative path of target file. Returns targetFile if there were
* no commonalities between the base and the target
*
*/
public static String getRelativePath(final String base, final File targetFile) {
try {
//
// remove trailing file separator
//
String canonicalBase = base;
if (base.charAt(base.length() - 1) != File.separatorChar) {
canonicalBase = base + File.separatorChar;
}
//
// get canonical name of target
//
String canonicalTarget;
if (System.getProperty("os.name").equals("OS/400"))
canonicalTarget = targetFile.getPath();
else
canonicalTarget = targetFile.getCanonicalPath();
if (canonicalBase.startsWith(canonicalTarget + File.separatorChar)) {
canonicalTarget = canonicalTarget + File.separator;
}
if (canonicalTarget.equals(canonicalBase)) {
return ".";
}
//
// see if the prefixes are the same
//
if (canonicalBase.substring(0, 2).equals("\\\\")) {
//
// UNC file name, if target file doesn't also start with same
// server name, don't go there
int endPrefix = canonicalBase.indexOf('\\', 2);
String prefix1 = canonicalBase.substring(0, endPrefix);
String prefix2 = canonicalTarget.substring(0, endPrefix);
if (!prefix1.equals(prefix2)) {
return canonicalTarget;
}
} else {
if (canonicalBase.substring(1, 3).equals(":\\")) {
int endPrefix = 2;
String prefix1 = canonicalBase.substring(0, endPrefix);
String prefix2 = canonicalTarget.substring(0, endPrefix);
if (!prefix1.equals(prefix2)) {
return canonicalTarget;
}
} else {
if (canonicalBase.charAt(0) == '/') {
if (canonicalTarget.charAt(0) != '/') {
return canonicalTarget;
}
}
}
}
char separator = File.separatorChar;
int lastCommonSeparator = -1;
int minLength = canonicalBase.length();
if (canonicalTarget.length() < minLength) {
minLength = canonicalTarget.length();
}
//
// walk to the shorter of the two paths
// finding the last separator they have in common
for (int i = 0; i < minLength; i++) {
if (canonicalTarget.charAt(i) == canonicalBase.charAt(i)) {
if (canonicalTarget.charAt(i) == separator) {
lastCommonSeparator = i;
}
} else {
break;
}
}
StringBuffer relativePath = new StringBuffer(50);
//
// walk from the first difference to the end of the base
// adding "../" for each separator encountered
//
for (int i = lastCommonSeparator + 1; i < canonicalBase.length(); i++) {
if (canonicalBase.charAt(i) == separator) {
if (relativePath.length() > 0) {
relativePath.append(separator);
}
relativePath.append("..");
}
}
if (canonicalTarget.length() > lastCommonSeparator + 1) {
if (relativePath.length() > 0) {
relativePath.append(separator);
}
relativePath.append(canonicalTarget.substring(lastCommonSeparator + 1));
}
return relativePath.toString();
} catch (IOException ex) {
}
return targetFile.toString();
}
public static boolean isActive(Project p, String ifCond, String unlessCond)
throws BuildException {
if (ifCond != null) {
String ifValue = p.getProperty(ifCond);
if (ifValue == null) {
return false;
} else {
if (ifValue.equals("false") || ifValue.equals("no")) {
throw new BuildException("if condition \"" + ifCond
+ "\" has suspicious value \"" + ifValue);
}
}
}
if (unlessCond != null) {
String unlessValue = p.getProperty(unlessCond);
if (unlessValue != null) {
if (unlessValue.equals("false") || unlessValue.equals("no")) {
throw new BuildException("unless condition \"" + unlessCond
+ "\" has suspicious value \"" + unlessValue);
}
return false;
}
}
return true;
}
/**
* Parse a string containing directories into an File[]
*
* @param path
* path string, for example ".;c:\something\include"
* @param delim
* delimiter, typically ; or :
*/
public static File[] parsePath(String path, String delim) {
Vector libpaths = new Vector();
int delimPos = 0;
for (int startPos = 0; startPos < path.length(); startPos = delimPos
+ delim.length()) {
delimPos = path.indexOf(delim, startPos);
if (delimPos < 0) {
delimPos = path.length();
}
//
// don't add an entry for zero-length paths
//
if (delimPos > startPos) {
String dirName = path.substring(startPos, delimPos);
File dir = new File(dirName);
if (dir.exists() && dir.isDirectory()) {
libpaths.addElement(dir);
}
}
}
File[] paths = new File[libpaths.size()];
libpaths.copyInto(paths);
return paths;
}
/**
* This method is exposed so test classes can overload and test the
* arguments without actually spawning the compiler
*/
public static int runCommand(CCTask task, File workingDir,
String[] cmdline, boolean newEnvironment, Environment env)
throws BuildException {
try {
task.log(Commandline.toString(cmdline), Project.MSG_VERBOSE);
Execute exe = new Execute(new LogStreamHandler(task,
Project.MSG_INFO, Project.MSG_ERR));
if (System.getProperty("os.name").equals("OS/390"))
exe.setVMLauncher(false);
exe.setAntRun(task.getProject());
exe.setCommandline(cmdline);
exe.setWorkingDirectory(workingDir);
if (env != null) {
String[] environment = env.getVariables();
if (environment != null) {
for (int i = 0; i < environment.length; i++) {
task.log("Setting environment variable: "
+ environment[i], Project.MSG_VERBOSE);
}
}
exe.setEnvironment(environment);
}
exe.setNewenvironment(newEnvironment);
return exe.execute();
} catch (java.io.IOException exc) {
throw new BuildException("Could not launch " + cmdline[0] + ": "
+ exc, task.getLocation());
}
}
/**
* Compares the contents of 2 arrays for equaliy.
*/
public static boolean sameList(Object[] a, Object[] b) {
if (a == null || b == null || a.length != b.length) {
return false;
}
for (int i = 0; i < a.length; i++) {
if (!a[i].equals(b[i])) {
return false;
}
}
return true;
}
/**
* Compares the contents of an array and a Vector for equality.
*/
public static boolean sameList(Vector v, Object[] a) {
if (v == null || a == null || v.size() != a.length) {
return false;
}
for (int i = 0; i < a.length; i++) {
Object o = a[i];
if (!o.equals(v.elementAt(i))) {
return false;
}
}
return true;
}
/**
* Compares the contents of an array and a Vector for set equality. Assumes
* input array and vector are sets (i.e. no duplicate entries)
*/
public static boolean sameSet(Object[] a, Vector b) {
if (a == null || b == null || a.length != b.size()) {
return false;
}
if (a.length == 0) {
return true;
}
// Convert the array into a set
Hashtable t = new Hashtable();
for (int i = 0; i < a.length; i++) {
t.put(a[i], a[i]);
}
for (int i = 0; i < b.size(); i++) {
Object o = b.elementAt(i);
if (t.remove(o) == null) {
return false;
}
}
return (t.size() == 0);
}
/**
* Converts a vector to a string array.
*/
public static String[] toArray(Vector src) {
String[] retval = new String[src.size()];
src.copyInto(retval);
return retval;
}
/**
* Replaces any embedded quotes in the string so that the value can be
* placed in an attribute in an XML file
*
* @param attrValue
* value to be expressed
* @return equivalent attribute literal
*
*/
public static String xmlAttribEncode(String attrValue) {
StringBuffer buf = new StringBuffer (attrValue);
int quotePos;
for (quotePos = -1; (quotePos = buf.indexOf("\"", quotePos + 1)) >= 0;) {
buf.deleteCharAt(quotePos);
buf.insert (quotePos, """);
quotePos += 5;
}
for (quotePos = -1; (quotePos = buf.indexOf("<", quotePos + 1)) >= 0;) {
buf.deleteCharAt(quotePos);
buf.insert (quotePos, "<");
quotePos += 3;
}
for (quotePos = -1; (quotePos = buf.indexOf(">", quotePos + 1)) >= 0;) {
buf.deleteCharAt(quotePos);
buf.insert (quotePos, ">");
quotePos += 3;
}
return buf.toString();
}
public final static int FILETIME_EPSILON = 500;
/**
* Determines whether time1 is earlier than time2
* to a degree that file system time truncation is not significant.
*
* @param time1 long first time value
* @param time2 long second time value
* @return boolean if first time value is earlier than second time value.
* If the values are within the rounding error of the file system return false.
*/
public static boolean isSignificantlyBefore(long time1, long time2) {
return (time1 + FILETIME_EPSILON) < time2;
}
/**
* Determines whether time1 is later than time2
* to a degree that file system time truncation is not significant.
*
* @param time1 long first time value
* @param time2 long second time value
* @return boolean if first time value is later than second time value.
* If the values are within the rounding error of the file system return false.
*/
public static boolean isSignificantlyAfter(long time1, long time2) {
return time1 > (time2 + FILETIME_EPSILON);
}
public static String toWindowsPath(final String path) {
if (File.separatorChar != '\\' && path.indexOf(File.separatorChar) != -1) {
return StringUtils.replace(path, File.separator, "\\");
}
return path;
}
public static String toUnixPath(final String path) {
if (File.separatorChar != '/' && path.indexOf(File.separatorChar) != -1) {
return StringUtils.replace(path, File.separator, "/");
}
return path;
}
/**
* Determines if source file has a system path,
* that is part of the compiler or platform.
* @param source source, may not be null.
* @return true is source file appears to be system library
* and its path should be discarded.
*/
public static boolean isSystemPath(final File source) {
String lcPath = source.getAbsolutePath().toLowerCase(java.util.Locale.US);
return lcPath.indexOf("platformsdk") != -1
|| lcPath.indexOf("microsoft") != -1 ||
lcPath == "/usr/include" ||
lcPath == "/usr/lib" ||
lcPath == "/usr/local/include" ||
lcPath == "/usr/local/lib";
}
}