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shapereader/dbf.h  view on Meta::CPAN

/**
 * Record
 */
typedef struct dbf_record_t {
    char *bytes; /* Raw data of length record_size */
} dbf_record_t;

/**
 * Convert a Julian date into a tm structure
 *
 * Calculates the calendar date from a Julian date and the time since
 * midnight.
 *
 * The tm_isdst member of the tm structure is always set to -1.
 *
 * @param jd days since 1 January -4712.
 * @param jt milliseconds since midnight.
 * @param[out] tm the converted date.
 *
 * @see "Astronomical Algorithms" @cite Astronomical_Algorithms, p. 63 for a
 *      description of the algorithm.
 */
extern void dbf_jd_to_tm(int32_t jd, int32_t jt, struct tm *tm);

/**
 * Converts a date string in the format "YYYYMMDD" into a tm structure
 *
 * Fills a tm structure with the day, month and year from a date string.
 *
 * The tm_wday member is only valid after 15 October 1582 in the Gregorian
 * calendar.
 *
 * The tm_isdst member is always set to -1.
 *
 * @param ymd a date string in the format "YYYYMMDD".
 * @param n the string length
 * @param[out] tm the converted date.
 * @return true on success, otherwise false.
 */
extern int dbf_yyyymmdd_to_tm(const char *ymd, size_t n, struct tm *tm);

shapereader/dbf.h  view on Meta::CPAN

                             const dbf_field_t *field, const char **pbytes,
                             size_t *len);

/**
 * Get a date
 *
 * Fills a tm structure with the day, month and year from a date in the
 * format "YYYYMMDD".
 *
 * The tm_wday member is only valid after 15 October 1582 in the Gregorian
 * calendar.
 *
 * The tm_isdst member is always set to -1.
 *
 * @memberof dbf_record_t
 * @param record a record.
 * @param field a field in the record.
 * @param[out] tm a tm structure.
 * @return true on success, otherwise false.
 */
extern int dbf_record_date(const dbf_record_t *record,