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-rw-r--r--gdb/common/environ.h103
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diff --git a/gdb/common/environ.h b/gdb/common/environ.h
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--- a/gdb/common/environ.h
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-/* Header for environment manipulation library.
- Copyright (C) 1989-2019 Free Software Foundation, Inc.
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 3 of the License, or
- (at your option) any later version.
-
- 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 General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>. */
-
-#ifndef COMMON_ENVIRON_H
-#define COMMON_ENVIRON_H
-
-#include <vector>
-#include <set>
-
-/* Class that represents the environment variables as seen by the
- inferior. */
-
-class gdb_environ
-{
-public:
- /* Regular constructor and destructor. */
- gdb_environ ()
- {
- /* Make sure that the vector contains at least a NULL element.
- If/when we add more variables to it, NULL will always be the
- last element. */
- m_environ_vector.push_back (NULL);
- }
-
- ~gdb_environ ()
- {
- clear ();
- }
-
- /* Move constructor. */
- gdb_environ (gdb_environ &&e)
- : m_environ_vector (std::move (e.m_environ_vector)),
- m_user_set_env (std::move (e.m_user_set_env)),
- m_user_unset_env (std::move (e.m_user_unset_env))
- {
- /* Make sure that the moved-from vector is left at a valid
- state (only one NULL element). */
- e.m_environ_vector.clear ();
- e.m_environ_vector.push_back (NULL);
- e.m_user_set_env.clear ();
- e.m_user_unset_env.clear ();
- }
-
- /* Move assignment. */
- gdb_environ &operator= (gdb_environ &&e);
-
- /* Create a gdb_environ object using the host's environment
- variables. */
- static gdb_environ from_host_environ ();
-
- /* Clear the environment variables stored in the object. */
- void clear ();
-
- /* Return the value in the environment for the variable VAR. The
- returned pointer is only valid as long as the gdb_environ object
- is not modified. */
- const char *get (const char *var) const;
-
- /* Store VAR=VALUE in the environment. */
- void set (const char *var, const char *value);
-
- /* Unset VAR in environment. */
- void unset (const char *var);
-
- /* Return the environment vector represented as a 'char **'. */
- char **envp () const;
-
- /* Return the user-set environment vector. */
- const std::set<std::string> &user_set_env () const;
-
- /* Return the user-unset environment vector. */
- const std::set<std::string> &user_unset_env () const;
-
-private:
- /* Unset VAR in environment. If UPDATE_UNSET_LIST is true, then
- also update M_USER_UNSET_ENV to reflect the unsetting of the
- environment variable. */
- void unset (const char *var, bool update_unset_list);
-
- /* A vector containing the environment variables. */
- std::vector<char *> m_environ_vector;
-
- /* The environment variables explicitly set by the user. */
- std::set<std::string> m_user_set_env;
-
- /* The environment variables explicitly unset by the user. */
- std::set<std::string> m_user_unset_env;
-};
-
-#endif /* COMMON_ENVIRON_H */