python.c

/* 
 * Minimal Android/SDL-specific main program
 * */
#include "Python.h"
#include <locale.h>
#include "SDL.h"
#include <string.h>

int
main(int argc, char *argv[])
{
    wchar_t **argv_copy;
    /* We need a second copy, as Python might modify the first one. */
    wchar_t **argv_copy2;
    int i, res;
    char *oldloc;

    argv_copy = (wchar_t **)PyMem_RawMalloc(sizeof(wchar_t*) * (argc+1));
    argv_copy2 = (wchar_t **)PyMem_RawMalloc(sizeof(wchar_t*) * (argc+1));
    if (!argv_copy || !argv_copy2) {
        SDL_LogCritical(SDL_LOG_CATEGORY_APPLICATION, "out of memory");
        return 1;
    }

    for (i = 0; i < argc; i++) {
        argv_copy[i] = Py_DecodeLocale(argv[i], NULL);
        if (!argv_copy[i]) {
            SDL_LogCritical(SDL_LOG_CATEGORY_APPLICATION,
                    "unable to decode the command line argument #%i", i + 1);
            return 1;
        }
        argv_copy2[i] = argv_copy[i];
    }
    argv_copy2[argc] = argv_copy[argc] = NULL;

#ifdef __ANDROID__
    /* Get prefix (SDL external storage path) */
    const char *sdl_prefix = SDL_AndroidGetExternalStoragePath();


    /* Get exec prefix (SDL internal storage path) */
    const char *sdl_exec_prefix = SDL_AndroidGetInternalStoragePath();
    if (sdl_exec_prefix == NULL) {
        SDL_LogCritical(SDL_LOG_CATEGORY_APPLICATION,
                "SDL_AndroidGetInternalStoragePath failed");
        return 1;
    }

    const char *sdl_combined_prefix;
    char *_blah = NULL;

    if (sdl_prefix) {
        _blah = (char*) SDL_calloc(SDL_strlen(sdl_prefix) + SDL_strlen(sdl_exec_prefix) + 2, sizeof(char));
        strcat(_blah, sdl_prefix);
        strcat(_blah, ":");
        strcat(_blah, sdl_exec_prefix);
        sdl_combined_prefix = _blah;
    } else {
        sdl_combined_prefix = sdl_exec_prefix;
    }
    SDL_Log("Combined prefix is %s", sdl_combined_prefix);

    /* Decode path into wchar_t */
    wchar_t *py_home = Py_DecodeLocale(sdl_combined_prefix, NULL);
    if (py_home == NULL) {
        SDL_LogCritical(SDL_LOG_CATEGORY_APPLICATION,
                "Could not decode SDL_AndroidGetInternalStoragePath");
        return 1;
    }
    /* Set python home */
    Py_SetPythonHome(py_home);
#endif
    /* Run python */
    res = Py_Main(argc, argv_copy);
    for (i = 0; i < argc; i++) {
        PyMem_RawFree(argv_copy2[i]);
    }
    PyMem_RawFree(argv_copy);
    PyMem_RawFree(argv_copy2);
#ifdef __ANDROID__
    PyMem_RawFree(py_home);
    if (_blah) SDL_free(_blah);
#endif
    if (res != 0) {
        SDL_LogCritical(SDL_LOG_CATEGORY_APPLICATION, "cpython returned %d!", res);
    }
    return res;
}