Function xmlSchemaValidateDuration

ThirdParty/libxml2/vtklibxml2/xmlschemastypes.c:2001–2161

* xmlSchemaValidateDuration: * @type: the predefined type * @duration: string to analyze * @val: the return computed value * * Check that @duration conforms to the lexical space of the duration type. * if true a value is computed and returned in @val. * * Returns 0 if this validates, a positive error code number otherwise * and -1 in case of internal or API error. */

 *         and -1 in case of internal or API error.
 */
static int
xmlSchemaValidateDuration (xmlSchemaTypePtr type ATTRIBUTE_UNUSED,
	                   const xmlChar *duration, xmlSchemaValPtr *val,
			   int collapse) {
    const xmlChar  *cur = duration;
    xmlSchemaValPtr dur;
    int isneg = 0;
    unsigned int seq = 0;
    long days, secs = 0;
    double sec_frac = 0.0;

    if (duration == NULL)
	return -1;

    if (collapse)
	while IS_WSP_BLANK_CH(*cur) cur++;

    if (*cur == '-') {
        isneg = 1;
        cur++;
    }

    /* duration must start with 'P' (after sign) */
    if (*cur++ != 'P')
	return 1;

    if (*cur == 0)
	return 1;

    dur = xmlSchemaNewValue(XML_SCHEMAS_DURATION);
    if (dur == NULL)
	return -1;

    while (*cur != 0) {
        long           num = 0;
        size_t         has_digits = 0;
        int            has_frac = 0;
        const xmlChar  desig[] = {'Y', 'M', 'D', 'H', 'M', 'S'};

        /* input string should be empty or invalid date/time item */
        if (seq >= sizeof(desig))
            goto error;

        /* T designator must be present for time items */
        if (*cur == 'T') {
            if (seq > 3)
                goto error;
            cur++;
            seq = 3;
        } else if (seq == 3)
            goto error;

        /* Parse integral part. */
        while (*cur >= '0' && *cur <= '9') {
            long digit = *cur - '0';

            if (num > LONG_MAX / 10)
                goto error;