locale_stub.cpp

Go to the documentation of this file.

 
#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;
}