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extern/stdcxx/4.2.1/util/locale_stub.cpp

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+/***************************************************************************
+ *
+ * locale_stub.cpp
+ *
+ * $Id: locale_stub.cpp 648752 2008-04-16 17:01:56Z faridz $
+ *
+ ***************************************************************************
+ *
+ * Licensed to the Apache Software  Foundation (ASF) under one or more
+ * contributor  license agreements.  See  the NOTICE  file distributed
+ * with  this  work  for  additional information  regarding  copyright
+ * ownership.   The ASF  licenses this  file to  you under  the Apache
+ * License, Version  2.0 (the  "License"); you may  not use  this file
+ * except in  compliance with the License.   You may obtain  a copy of
+ * the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the  License is distributed on an  "AS IS" BASIS,
+ * WITHOUT  WARRANTIES OR CONDITIONS  OF ANY  KIND, either  express or
+ * implied.   See  the License  for  the  specific language  governing
+ * permissions and limitations under the License.
+ *
+ **************************************************************************/
+
+#include <cstdlib>   // for size_t, system()
+#include <cstring>   // for strcat(), strlen()
+
+
+int main (int argc, char *argv[])
+{
+    // compute the total length of the command line arguments
+    std::size_t arglen = 0;
+    for (int i = 0; i != argc; ++i)
+        arglen += std::strlen (argv [i]);
+
+    // add the length of space separating adjacent pairs
+    arglen += argc;
+
+    // add the length of the option to invoke localeded in locale mode
+    const char argv_1[] = "--locale-mode";
+    arglen += sizeof argv_1;
+
+    const char localedef[] = "localedef";
+    arglen += sizeof localedef;
+
+    // allocate space for the new command line
+    char* const cmdline = new char [arglen];
+
+    // replace the basename of argv[0] with "localedef" keeping the
+    // directory portion, if it's there, followed by the new option
+    // separated by a space
+    std::strcpy (cmdline, argv [0]);
+    char* slash = std::strrchr (cmdline, '/');
+
+    if (0 == slash) {
+        // look for backslash for Windoze
+        slash = std::strrchr (cmdline, '\\');
+    }
+
+    if (slash)
+        std::strcpy (slash + 1, localedef);
+    else
+        std::strcpy (cmdline, localedef);
+
+    std::strcat (cmdline, " ");
+    std::strcat (cmdline, argv_1);
+
+    // copy arguments to the newly allocated buffer
+    for (int i = 1; i != argc; ++i) {
+        std::strcat (cmdline, " ");
+        std::strcat (cmdline, argv [i]);
+    }
+
+    // invoke the localedef utility instructing it to switch
+    // to locale mode
+    const int status = std::system (cmdline);
+
+    // clean up
+    delete[] cmdline;
+
+    return status;
+}