* Licence details can be found in the file COPYING.
*
* \author Angus Leeming
- * \author João Luis M. Assirati
- * \author Lars Gullik Bjønnes
+ * \author João Luis M. Assirati
+ * \author Lars Gullik Bjønnes
*
* Full author contact details are available in file CREDITS.
*/
#include "support/environment.h"
#include "support/docstring.h"
+#include "support/lstrings.h"
#include "support/os.h"
-#include <boost/tokenizer.hpp>
-
+#include <algorithm> // for remove
#include <cstdlib>
#include <map>
#include <sstream>
namespace lyx {
namespace support {
-string const getEnv(string const & envname)
+
+bool hasEnv(string const & name)
+{
+ return getenv(name.c_str());
+}
+
+
+string const getEnv(string const & name)
{
// f.ex. what about error checking?
- char const * const ch = getenv(envname.c_str());
+ char const * const ch = getenv(name.c_str());
return ch ? to_utf8(from_local8bit(ch)) : string();
}
vector<string> const getEnvPath(string const & name)
{
- typedef boost::char_separator<char> Separator;
- typedef boost::tokenizer<Separator> Tokenizer;
-
string const env_var = getEnv(name);
- Separator const separator(string(1, os::path_separator()).c_str());
- Tokenizer const tokens(env_var, separator);
- Tokenizer::const_iterator it = tokens.begin();
- Tokenizer::const_iterator const end = tokens.end();
+ string const separator(1, os::path_separator());
- vector<string> vars;
- for (; it != end; ++it)
- vars.push_back(os::internal_path(*it));
-
- return vars;
+ return getVectorFromString(env_var, separator);
}
string const encoded = to_local8bit(from_utf8(value));
#if defined (HAVE_SETENV)
- return ::setenv(name.c_str(), encoded.c_str(), true);
+ return ::setenv(name.c_str(), encoded.c_str(), 1) == 0;
#elif defined (HAVE_PUTENV)
+ // According to http://pubs.opengroup.org/onlinepubs/9699919799/functions/putenv.html
+ // the argument of putenv() needs to be static, because changing its
+ // value will change the environment. Therefore we need a different static
+ // storage for each variable.
+ // FIXME THREAD
static map<string, string> varmap;
varmap[name] = name + '=' + encoded;
return ::putenv(const_cast<char*>(varmap[name].c_str())) == 0;
void prependEnvPath(string const & name, string const & prefix)
{
+ string const separator(1, os::path_separator());
+ vector<string> reversed_tokens
+ = getVectorFromString(prefix, separator);
vector<string> env_var = getEnvPath(name);
- typedef boost::char_separator<char> Separator;
- typedef boost::tokenizer<Separator> Tokenizer;
-
- Separator const separator(string(1, os::path_separator()).c_str());
-
// Prepend each new element to the list, removing identical elements
// that occur later in the list.
- Tokenizer const tokens(prefix, separator);
- vector<string> reversed_tokens(tokens.begin(), tokens.end());
-
typedef vector<string>::const_reverse_iterator token_iterator;
token_iterator it = reversed_tokens.rbegin();
token_iterator const end = reversed_tokens.rend();
setEnvPath(name, env_var);
}
+
+bool unsetEnv(string const & name)
+{
+#if defined(HAVE_UNSETENV)
+ // FIXME: does it leak?
+ return ::unsetenv(name.c_str()) == 0;
+#elif defined(HAVE_PUTENV)
+ // This is OK with MSVC and MinGW at least.
+ // The argument of putenv() does not need to be a static variable in this
+ // case, since the variable is removed from the environment.
+ return ::putenv(const_cast<char*>((name + "=").c_str())) == 0;
+#else
+#error No environment-unsetting function has been defined.
+#endif
+}
+
+
} // namespace support
} // namespace lyx