lyx_mirror/src/support/environment.h
Angus Leeming 923623a5ce Remove spurious unicode char in comment.
git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@10393 a592a061-630c-0410-9148-cb99ea01b6c8
2005-08-09 16:56:36 +00:00

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// -*- C++ -*-
/**
* \file environment.h
* This file is part of LyX, the document processor.
* Licence details can be found in the file COPYING.
*
* \author Angus Leeming
*
* Full author contact details are available in file CREDITS.
*/
#ifndef LYX_ENVIRONMENT_H
#define LYX_ENVIRONMENT_H
#include <string>
#include <vector>
namespace lyx {
namespace support {
/// @returns the contents of the environment variable @c name.
std::string const getEnv(std::string const & envname);
/** @returns the contents of the environment variable @c name,
* split into path elements using the OS-dependent separator token.
* Each element is then passed through os::internal_path() to
* guarantee that it is in the form of a unix-style path.
* If the environment variable is not set, then the function returns
* an empty vector.
 */
std::vector<std::string> const getEnvPath(std::string const & name);
/** Set the contents of the environment variable @c name to @c value.
* @returns true if the variable was set successfully.
*/
bool setEnv(std::string const & name, std::string const & value);
/** Set the contents of the environment variable @c name
* using the paths stored in the @c env vector.
* Each element is passed through os::external_path().
* Multiple elements are concatenated into a single string using
* os::path_separator().
*/
void setEnvPath(std::string const & name, std::vector<std::string> const & env);
/** Prepend a list of paths to that returned by the environment variable.
* Identical paths occurring later in the list are removed.
* @param name the name of the environment variable.
* @prefix the list of paths in OS-native syntax.
* Eg "/foo/bar:/usr/bin:/usr/local/bin" on *nix,
* "C:\foo\bar;C:\windows" on Windows.
*/
void prependEnvPath(std::string const & name, std::string const & prefix);
} // namespace support
} // namespace lyx
#endif // LYX_ENVIRONMENT_H