TYPE3

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

diff --git a/src/type3_AndroidCloud/anbox-master/external/process-cpp-minimal/include/core/posix/this_process.h b/src/type3_AndroidCloud/anbox-master/external/process-cpp-minimal/include/core/posix/this_process.h
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+/*
+ * 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>
+ */
+
+#ifndef CORE_POSIX_THIS_PROCESS_H_
+#define CORE_POSIX_THIS_PROCESS_H_
+
+#include <core/posix/visibility.h>
+
+#include <functional>
+#include <iosfwd>
+#include <string>
+#include <system_error>
+
+namespace core
+{
+namespace posix
+{
+class Process;
+namespace this_process
+{
+namespace env
+{
+/**
+ * @brief for_each invokes a functor for every key-value pair in the environment.
+ * @param [in] functor Invoked for every key-value pair.
+ */
+CORE_POSIX_DLL_PUBLIC void for_each(
+        const std::function<void(const std::string&, const std::string&)>& functor) noexcept(true);
+
+/**
+ * @brief get queries the value of an environment variable.
+ * @throw std::runtime_error if there is no variable with the given key defined in the env.
+ * @param [in] key Name of the variable to query the value for.
+ * @return Contents of the variable.
+ */
+CORE_POSIX_DLL_PUBLIC std::string get_or_throw(const std::string& key);
+
+/**
+ * @brief get queries the value of an environment variable.
+ * @param [in] key Name of the variable to query the value for.
+ * @param [in] default_value Default value to return when key is not present in the environment.
+ * @return Contents of the variable or an empty string if the variable is not defined.
+ */
+CORE_POSIX_DLL_PUBLIC std::string get(
+        const std::string& key,
+        const std::string& default_value = std::string()) noexcept(true);
+
+/**
+ * @brief unset_or_throw removes the variable with name key from the environment.
+ * @throw std::system_error in case of errors.
+ * @param [in] key Name of the variable to unset.
+ */
+CORE_POSIX_DLL_PUBLIC void unset_or_throw(const std::string& key);
+
+/**
+ * @brief unset removes the variable with name key from the environment.
+ * @return false in case of errors, true otherwise.
+ * @param [in] key Name of the variable to unset.
+ * @param [out] se Receives error details if unset returns false.
+ */
+CORE_POSIX_DLL_PUBLIC bool unset(const std::string& key,
+                            std::error_code& se) noexcept(true);
+
+/**
+ * @brief set_or_throw will adjust the contents of the variable identified by key to the provided value.
+ * @throw std::system_error in case of errors.
+ * @param [in] key Name of the variable to set the value for.
+ * @param [in] value New contents of the variable.
+ */
+CORE_POSIX_DLL_PUBLIC void set_or_throw(const std::string& key,
+                                   const std::string& value);
+/**
+ * @brief set will adjust the contents of the variable identified by key to the provided value.
+ * @return false in case of errors, true otherwise.
+ * @param [in] key Name of the variable to set the value for.
+ * @param [in] value New contents of the variable.
+ * @param [out] se Receives the details in case of errors.
+ */
+CORE_POSIX_DLL_PUBLIC bool set(const std::string &key,
+                          const std::string &value,
+                          std::error_code& se) noexcept(true);
+}
+
+/**
+  * @brief Returns a Process instance corresponding to this process.
+  */
+CORE_POSIX_DLL_PUBLIC Process instance() noexcept(true);
+
+/**
+ * @brief Query the parent of the process.
+ * @return The parent of the process.
+ */
+CORE_POSIX_DLL_PUBLIC Process parent() noexcept(true);
+
+/**
+ * @brief Access this process's stdin.
+ */
+CORE_POSIX_DLL_PUBLIC std::istream& cin() noexcept(true);
+
+/**
+ * @brief Access this process's stdout.
+ */
+CORE_POSIX_DLL_PUBLIC std::ostream& cout() noexcept(true);
+
+/**
+ * @brief Access this process's stderr.
+ */
+CORE_POSIX_DLL_PUBLIC std::ostream& cerr() noexcept(true);
+}
+}
+}
+
+#endif // CORE_POSIX_THIS_PROCESS_H_