Definitions for the MS-DOS to Unix time conversions. More...

#include <time.h>
#include <inttypes.h>

Typedefs
typedef uint32_t	dostime_t

Functions
CLASS_DECL_ACME dostime_t	minimum_dos_time ()
	Return the minimum possible value.
CLASS_DECL_ACME dostime_t	maximum_dos_time ()
	Return the maximum possible value .
CLASS_DECL_ACME posix_time	dos_time_unix_time (dostime_t dostime)
	Convert a DOS time to a Unix time.
CLASS_DECL_ACME dostime_t	dos_time (::i32 year, ::i32 month, ::i32 day, ::i32 hour, ::i32 minute, ::i32 second)
CLASS_DECL_ACME dostime_t	unix_time_dos_time (posix_time unix_time)
	Convert a Unix date to a DOS date.

Detailed Description

Definitions for the MS-DOS to Unix time conversions.

This header defines a few functions helping in converting MS-DOS to Unix time and vice versa.

Note: This uses C code.

Function Documentation

◆ dos_time_unix_time()

CLASS_DECL_ACME posix_time dos_time_unix_time ( dos_time_t dostime )

Convert a DOS time to a Unix time.

This function returns the Unix posix_time value (GMT/UTC time) from the DOS format (local) time dostime, where dostime is a four ::u8 value (date in most significant word, time in least significant word), see dostime() function.

If the input DOS time is invalid, then the function returns -1.

Note: If the dostime is not valid (one of the parameters is out of range) then the function returns -1.

Parameters

[in] dostime A DOS time value as found in a zip file.

Returns: The DOS time converted to a Unix time or -1.

See also: dostime()

\FIXME Maximum for tm_mday depends on month/year.

◆ maximum_dos_time()

CLASS_DECL_ACME dostime_t maximum_dos_time ( )

Return the maximum possible value .

This function returns the maximum DOS time that can be represented in a dos_time_t parameter.

At this time we use a 32 bit field (like the Zip archive) so the maximum is Dec 31, 2107 23:59:59.

Note: To get the corresponding Unix time, use the dos2unixtime() as in:

posix_time max(dos2unixtime(maxdostime()));

posix_time

Definition posix_time.h:8

Returns: The largest possible DOS time.

◆ minimum_dos_time()

CLASS_DECL_ACME dostime_t minimum_dos_time ( )

Return the minimum possible value.

This function returns the minimum DOS time that can be represented in a dos_time_t parameter.

At this time we use a 32 bit field (like the Zip archive) so the maximum is Dec 31, 2107 23:59:59.

Note: To get the corresponding Unix time, use the dos2unixtime() as in:

posix_time min(dos2unixtime(mindostime()));

Returns: The smallest possible DOS time.

◆ unix_time_dos_time()

CLASS_DECL_ACME dostime_t unix_time_dos_time ( posix_time unix_time )

Convert a Unix date to a DOS date.

This function return the Unix posix_time converted in DOS format, rounded up to the next even second.