DBFHeader "Date of Last Update" not correct

[michalis]

The following corrections are all part of the dbfopen.c source file, under ogr/ogrsf_frmts/shape/

DBF Header files define a "date of last update" in position 1-3. This is not currently handled correctly, as it inserts a dummy date (07/26/95) on all calls to write a new header (function DBFWriteHeader). The attached file utilizes time.h to retrieve a time_h struct to grab the current date from the system using gmtime_r().

Similarly, when updating headers, the "date of last update" header part is not handled (DBFUpdateHeader). As with the previous correction, a time_h struct initialized through gmtime_r() is used to insert the correct date in the header.

For information about the date of last update in the header, please see ​http://www.clicketyclick.dk/databases/xbase/format/dbf.html#DBF_STRUCT

[michalis]

Updated dbfopen.c that uses time.h to correctly set dates in DBF headers.

[Even Rouault]

Similar ticket opened as #3919

[michalis]

Replying to rouault:

Similar ticket opened as #3919

My mistake, I missed that when I was searching for tickets with the term DBF in them.

[Jukka Rahkonen]

Duplicate of #3919. However, this ticket may have a better patch.