NAME

     zip_file_set_dostime, zip_file_set_mtime — set last modification time (mtime) for file in
     zip

LIBRARY

     libzip (-lzip)

SYNOPSIS

     #include <zip.h>

     int
     zip_file_set_dostime(zip_t *archive, zip_uint64_t index, zip_uint16_t dostime,
         zip_uint16_t dosdate, zip_flags_t flags);

     int
     zip_file_set_mtime(zip_t *archive, zip_uint64_t index, time_t mtime, zip_flags_t flags);

DESCRIPTION

     The zip_file_set_mtime() function sets the last modification time (mtime) for the file at
     position index in the zip archive to mtime.  Currently, no support for any flags is
     implemented.

     In the zip archive, the time and date are saved as two 16-bit integers.  To set the values
     directly, call the zip_file_set_dostime() function.  The values of the time bytes are
     defined as follows:

           0-4    day of the month (1-31)

           5-8    month (January = 1, February = 2, ...)

           9-15   year offset from 1980 (1980 = 0, 1981 = 1, ...)

     The values of the date bytes are defined as follows:

           0-4    seconds divided by two (1-2 = 1, 3-4 = 2, ...)

           5-10   minute (0-59)

           11-15  hour (0-23)

RETURN VALUES

     Upon successful completion 0 is returned.  Otherwise, -1 is returned and the error
     information in archive is set to indicate the error.

ERRORS

     zip_file_set_dostime() and zip_file_set_mtime() fail if:

     [ZIP_ER_INVAL]     index is not a valid file index in archive.

     [ZIP_ER_MEMORY]    Required memory could not be allocated.

     [ZIP_ER_RDONLY]    The archive was opened in read-only mode.

SEE ALSO

     libzip(3), zip_stat(3)

HISTORY

     zip_file_set_mtime() was added in libzip 1.0.  zip_file_set_dostime() was added in libzip
     1.6.

AUTHORS

     Dieter Baron <dillo@nih.at> and Thomas Klausner <tk@giga.or.at>

CAVEATS

     Following historical practice, the zip_file_set_mtime() function translates the time from
     the zip archive into the local time zone.  If you want to avoid this, use the
     zip_file_set_dostime() function instead.