Function _strptime

util/datetime/strptime.cpp:173–611

    #endif

static char*
_strptime(const char* buf, const char* fmt, struct tm* tm, int* GMTp)
{
    char c;
    const char* ptr;
    int i;
    size_t len = 0;
    int Ealternative, Oalternative;
    struct lc_time_T* tptr = __get_current_time_locale();

    ptr = fmt;
    while (*ptr != 0) {
        if (*buf == 0)
            break;

        c = *ptr++;

        if (c != '%') {
            if (isspace((unsigned char)c))
                while (*buf != 0 && isspace((unsigned char)*buf))
                    ++buf;
            else if (c != *buf++)
                return 0;
            continue;
        }

        Ealternative = 0;
        Oalternative = 0;
    label:
        c = *ptr++;
        switch (c) {
            case 0:
            case '%':
                if (*buf++ != '%')
                    return 0;
                break;

            case '+':
                buf = _strptime(buf, tptr->date_fmt, tm, GMTp);
                if (buf == 0)
                    return 0;
                break;

            case 'C':
                if (!isdigit((unsigned char)*buf))
                    return 0;

                /* XXX This will break for 3-digit centuries. */
                len = 2;
                for (i = 0; len && *buf != 0 && isdigit((unsigned char)*buf); buf++) {
                    i *= 10;
                    i += *buf - '0';
                    --len;
                }
                if (i < 19)
                    return 0;

                tm->tm_year = i * 100 - 1900;