TYPE3

[iec.git] / src / type3_AndroidCloud / anbox-master / external / process-cpp-minimal / src / core / posix / this_process.cpp

diff --git a/src/type3_AndroidCloud/anbox-master/external/process-cpp-minimal/src/core/posix/this_process.cpp b/src/type3_AndroidCloud/anbox-master/external/process-cpp-minimal/src/core/posix/this_process.cpp
new file mode 100644 (file)
index 0000000..53f5241
--- /dev/null
+++ b/src/type3_AndroidCloud/anbox-master/external/process-cpp-minimal/src/core/posix/this_process.cpp
@@ -0,0 +1,177 @@
+/*
+ * Copyright © 2013 Canonical Ltd.
+ *
+ * This program is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License version 3,
+ * as published by the Free Software Foundation.
+ *
+ * This program 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 Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Authored by: Thomas Voß <thomas.voss@canonical.com>
+ */
+
+#include <core/posix/this_process.h>
+#include <core/posix/process.h>
+
+#include <boost/algorithm/string.hpp>
+
+#include <iostream>
+#include <mutex>
+#include <sstream>
+#include <vector>
+
+#include <cerrno>
+#include <cstdlib>
+
+#if defined(_GNU_SOURCE)
+#include <unistd.h>
+#else
+extern char** environ;
+#endif
+
+namespace core
+{
+namespace posix
+{
+namespace this_process
+{
+namespace env
+{
+namespace
+{
+std::mutex& env_guard()
+{
+    static std::mutex m;
+    return m;
+}
+}
+
+void for_each(const std::function<void(const std::string&, const std::string&)>& functor) noexcept(true)
+{
+    std::lock_guard<std::mutex> lg(env_guard());
+    auto it = ::environ;
+    while (it != nullptr && *it != nullptr)
+    {
+        std::string line(*it);        
+        functor(line.substr(0,line.find_first_of('=')),
+                line.substr(line.find_first_of('=')+1));
+        ++it;
+    }
+}
+
+std::string get_or_throw(const std::string& key)
+{
+    std::lock_guard<std::mutex> lg(env_guard());
+
+    auto result = ::getenv(key.c_str());
+
+    if (result == nullptr)
+    {
+        std::stringstream ss;
+        ss << "Variable with name " << key << " is not defined in the environment";
+        throw std::runtime_error(ss.str());
+    }
+
+    return std::string{result};
+}
+
+std::string get(const std::string& key,
+                const std::string& default_value) noexcept(true)
+{
+    std::lock_guard<std::mutex> lg(env_guard());
+
+    auto result = ::getenv(key.c_str());
+    return std::string{result ? result : default_value};
+}
+
+void unset_or_throw(const std::string& key)
+{
+    std::lock_guard<std::mutex> lg(env_guard());
+
+    auto rc = ::unsetenv(key.c_str());
+
+    if (rc == -1)
+        throw std::system_error(errno, std::system_category());
+}
+
+bool unset(const std::string& key,
+           std::error_code& se) noexcept(true)
+{
+    std::lock_guard<std::mutex> lg(env_guard());
+
+    auto rc = ::unsetenv(key.c_str());
+
+    if (rc == -1)
+    {
+        se = std::error_code(errno, std::system_category());
+        return false;
+    }
+
+    return true;
+}
+
+void set_or_throw(const std::string& key,
+                  const std::string& value)
+{
+    std::lock_guard<std::mutex> lg(env_guard());
+
+    static const int overwrite = 0;
+    auto rc = ::setenv(key.c_str(), value.c_str(), overwrite);
+
+    if (rc == -1)
+        throw std::system_error(errno, std::system_category());
+}
+
+bool set(const std::string &key,
+         const std::string &value,
+         std::error_code& se) noexcept(true)
+{
+    std::lock_guard<std::mutex> lg(env_guard());
+
+    static const int overwrite = 0;
+    auto rc = ::setenv(key.c_str(), value.c_str(), overwrite);
+
+    if (rc == -1)
+    {
+        se = std::error_code(errno, std::system_category());
+        return false;
+    }
+
+    return true;
+}
+}
+
+Process instance() noexcept(true)
+{
+    static const Process self{getpid()};
+    return self;
+}
+
+Process parent() noexcept(true)
+{
+    return Process(getppid());
+}
+
+std::istream& cin() noexcept(true)
+{
+    return std::cin;
+}
+
+std::ostream& cout() noexcept(true)
+{
+    return std::cout;
+}
+
+std::ostream& cerr() noexcept(true)
+{
+    return std::cerr;
+}
+}
+}
+}