static size_t SDL_ScanUintPtrT(const char *text, int radix, uintptr_t *valuep)
{
    const char *textstart = text;
    uintptr_t value = 0;

    if ( radix == 16 && SDL_strncmp(text, "0x", 2) == 0 ) {
        text += 2;
    }
    for ( ; ; ) {
        int v;
        if ( SDL_isdigit((unsigned char) *text) ) {
            v = *text - '0';
        } else if ( radix == 16 && SDL_isupperhex(*text) ) {
            v = 10 + (*text - 'A');
        } else if ( radix == 16 && SDL_islowerhex(*text) ) {
            v = 10 + (*text - 'a');
        } else {
            break;
        }
        value *= radix;
        value += v;
        ++text;
    }
    if ( valuep ) {
        *valuep = value;
    }
    return (text - textstart);
}
Beispiel #2
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static size_t
SDL_ScanLong(const char *text, int radix, long *valuep)
{
    const char *textstart = text;
    long value = 0;
    SDL_bool negative = SDL_FALSE;

    if (*text == '-') {
        negative = SDL_TRUE;
        ++text;
    }
    if (radix == 16 && SDL_strncmp(text, "0x", 2) == 0) {
        text += 2;
    }
    for (;;) {
        int v;
        if (SDL_isdigit((unsigned char) *text)) {
            v = *text - '0';
        } else if (radix == 16 && SDL_isupperhex(*text)) {
            v = 10 + (*text - 'A');
        } else if (radix == 16 && SDL_islowerhex(*text)) {
            v = 10 + (*text - 'a');
        } else {
            break;
        }
        value *= radix;
        value += v;
        ++text;
    }
    if (valuep) {
        if (negative && value) {
            *valuep = -value;
        } else {
            *valuep = value;
        }
    }
    return (text - textstart);
}