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/*
* Copyright 2000-2013 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 com.jetbrains.python.sdk;
import com.google.common.collect.Lists;
import com.google.common.collect.Sets;
import com.intellij.openapi.util.text.StringUtil;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import java.io.File;
import java.util.Collection;
import java.util.List;
import java.util.Map;
import java.util.Set;
/**
* @author traff
*/
public class PythonEnvUtil {
@SuppressWarnings("SpellCheckingInspection") public static final String PYTHONPATH = "PYTHONPATH";
@SuppressWarnings("SpellCheckingInspection") public static final String PYTHONUNBUFFERED = "PYTHONUNBUFFERED";
@SuppressWarnings("SpellCheckingInspection") public static final String PYTHONIOENCODING = "PYTHONIOENCODING";
@SuppressWarnings("SpellCheckingInspection") public static final String IPYTHONENABLE = "IPYTHONENABLE";
private PythonEnvUtil() { }
public static Map<String, String> setPythonUnbuffered(@NotNull Map<String, String> env) {
env.put(PYTHONUNBUFFERED, "1");
return env;
}
public static Map<String, String> setPythonIOEncoding(@NotNull Map<String, String> env, @NotNull String encoding) {
env.put(PYTHONIOENCODING, encoding);
return env;
}
/**
* Appends a value to the end os a path-like environment variable, using system-dependent path separator.
*
* @param source path-like string to append to
* @param value what to append
* @return modified path-like string
*/
@NotNull
public static String appendToPathEnvVar(@Nullable String source, @NotNull String value) {
if (StringUtil.isEmpty(source)) return value;
Set<String> paths = Sets.newHashSet(source.split(File.pathSeparator));
return !paths.contains(value) ? source + File.pathSeparator + value : source;
}
public static void addPathsToEnv(@NotNull Map<String, String> env, String key, @NotNull Collection<String> values) {
for (String val : values) {
addPathToEnv(env, key, val);
}
}
public static void addPathToEnv(@NotNull Map<String, String> env, String key, String value) {
if (!StringUtil.isEmpty(value)) {
if (env.containsKey(key)) {
env.put(key, appendToPathEnvVar(env.get(key), value));
}
else {
env.put(key, value);
}
}
}
public static void addToPythonPath(@NotNull Map<String, String> env, @NotNull Collection<String> values) {
addPathsToEnv(env, PYTHONPATH, values);
}
public static void addToPythonPath(@NotNull Map<String, String> env, String value) {
addPathToEnv(env, PYTHONPATH, value);
}
public static List<String> getPathListFromEnv(@NotNull Map<String, String> env, String envKey) {
String pythonPath = env.get(envKey);
return pythonPath != null ? Lists.newArrayList(pythonPath.split(File.pathSeparator)) : null;
}
}
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