/*
* Copyright 2003-2016 JetBrains s.r.o.
*
* 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 jetbrains.mps.util;
import jetbrains.mps.project.PathMacros;
import jetbrains.mps.vfs.IFile;
import jetbrains.mps.vfs.IFileUtils;
import jetbrains.mps.vfs.impl.IoFileSystem;
import org.apache.log4j.LogManager;
import org.apache.log4j.Logger;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import java.io.File;
import java.util.Set;
/**
* TODO AP rewrite everything using {@link jetbrains.mps.vfs.path.Path}
*/
class Macros {
private static final Logger LOG = LogManager.getLogger(Macros.class);
@NotNull private final static PathMacros PATH_MACROS = PathMacros.getInstance();
@NotNull
private String getFullPath(@NotNull String anchorPath, @NotNull String relativePath) {
return IFileUtils.getCanonicalPath(IoFileSystem.INSTANCE.getFile(anchorPath).getDescendant(relativePath));
}
protected String expand(String path, @Nullable IFile anchorFile) {
if (!MacrosFactory.containsMacro(path)) {
return path;
}
String macro = path.substring(2, path.indexOf("}"));
String relativePath = removePrefix(path);
String macroValue = PATH_MACROS.getValue(macro);
if (macroValue != null) {
return getFullPath(macroValue, relativePath);
}
PATH_MACROS.report("Please define path variable in path variables section of settings", macro);
return path;
}
protected String shrink(String absolutePath, IFile anchorFile) {
String fileName;
Set<String> macroNames = PATH_MACROS.getNames();
for (String macro : macroNames) {
String path = PATH_MACROS.getValue(macro);
if (path != null) {
path = getCanonicalPath(path).replace(MacrosFactory.SEPARATOR_CHAR, File.separatorChar);
if (pathStartsWith(absolutePath, path)) {
String relationalPath = shrink(absolutePath, path);
fileName = "${" + macro + "}" + relationalPath;
return fileName;
}
}
}
fileName = absolutePath;
return fileName;
}
private static String getCanonicalPath(String path) {
return FileUtil.getCanonicalPath(path);
}
protected static String shrink(String path, String prefix) {
// since pathStartsWith uses getCanonicalPath
// we use it here also
path = getCanonicalPath(path);
if (path.equals(prefix)) {
return "";
}
assert path.length() >= prefix.length() : "path: " + path + "; prefix: " + prefix;
return File.separator + FileUtil.getRelativePath(path, prefix, File.separator);
}
String removePrefix(String path) {
String result = path.substring(path.indexOf("}") + 1);
if (result.startsWith(File.separator)) {
result = result.substring(1);
}
return result;
}
static boolean pathStartsWith(String path, @NotNull String with) {
// shrink uses getCanonicalPath
path = getCanonicalPath(path);
if (path.equals(with)) {
return true;
}
String fullPart = with + (with.endsWith(File.separator) ? "" : File.separator);
if (!path.toLowerCase().startsWith(fullPart.toLowerCase())) {
return false;
}
String pathReplaced = getCanonicalPath(with + path.substring(with.length()));
return path.equals(pathReplaced);
}
}