[ sfv_md5.exe - version 1.3.2.8 or later ]

Type "sfv_md5.exe" to see version and show usage below.


Usage
c(reate) [fo,t, d,u] <checksum file> [input files]
v(erify) [vs,vd,d,u] <checksum file>

Option
 /fo   : Search file only for wildcard
 /t<n> : Save time stamp
 /vs<n>: Skip verification by recent result
 /vd"*": Set directory of recent result
 /d"*" : Set directory of input files
 /u    : Console output is encoded with UTF-8


[ Usage description ]

key input :
 Push "c" key if you want to cancel process.
 Push "p" / "r" key if you want to pasue / resume process.

exit code (bit-wise OR) :
  0 = normal end
  1 = fatal error
  2 = cancel by c-key
  4 = input files are incomplete
  8 | 4 = input files are missing or incomplete
256 = checksum file is incomplete

specifying <checksum file> :
 <checksum file> is either absolute path or relative path from current directory.
Note, it is not relative path from the SFV client's directory.

 <checksum file> can be a NTFS "alternate data stream".
It is like a normal file path and ":something stream name".
If you want to add checksum into "C:\test\sample.mp3" as a stream "digest.md5",
the path is "C:\test\sample.mp3:digest.md5".
Caution !! this client cannot delete the stream which contains checksum data.
Use a tool like "AlternateStreamView" to delete streams from a file.

create :
 You create a SFV or MD5 checksum file.
To specify a checksum file, <checksum file> cannot contain "*" or "?".
You must specify extension ".sfv" or ".md5" to select file format.
CRC-32 is saved in SFV file.
MD5 hash is saved in MD5 file (md5sum format).

 You can write multiple input files in command line.
The order of files in a checksum file is different from this command order.
You cannot supply input files of same filename as the creating checksum file.

 All input files must have same base-directory (root).
This directory can be set by /d option, or directory of <checksum file> is used.
Though it is possible to input with absolute path,
[input files] are set as relative path from the base-directory.
A short filename in a path will be converted to long filename.

 [input files] can contain "*" or "?" for search.
"*" is treated as multiple unknown characters.
"?" is treated as single unknown character.
If it is "*", all files in the specified directory are searched.
If these are "*.txt" and "*.doc", files with extensions ".txt" and ".doc"
in the specified directory are searched.
When you don't see hidden files on Windows Explorer, they are ignored by search.
If you want to search hidden files, change Windows Explorer setting to see them.

 [input files] can be folder, though the folder itself is ignored.
If it is "folder_name", files in the folder are searched.
(This is same as "folder_name/*".)
Because the folder only is un-supported, "folder_name/" is invalid.

verify :
 You check files in a checksum file.
If some files are broken or missing, this show how many files are incomplete.
For when the specified checksum file does not exist,
<checksum file> may contain "*" or "?" with partial filename to search other files.

 Because checksum is written in any text encoding,
it is difficult to recognize which to used for decoding.
If filenames contain non-ASCII characters,
it is preferable to convert encoding to UTF-8 or UTF-16.
Because there are many kinds of format for MD5 hash,
some format may not be supported.


[ Option description ]

 Every options must start with prefix "/" or "-".
If you use either one at first option, you must use it at all following options.
It means that it is impossible to mix "/" and "-" in options of same command line.
If checksum file's filename (or relative path) is started by "-",
you need to use "/" for prefix of options to distinguish checksum file.

 /fo :
 Set this, if you want to ignore folders at wildcard matching search.
This setting disable recursive search into folder also.
Note, sub-directory of file is still possible.

 /t :
 Set this, if you want to save time stamp of checksum file or input files.
Because the time zone is local of your PC, it looks different on other time zone.
/t1 = save update time of checksum file
/t2 = do above and, save file size and update time of each input files
This additional data is just a comment, and it's not checked while verification.

 /vs :
 Set this, if you want to save a current verification result
and/or re-use a previous verification results.
This feature is disabled by default. (same as /vs0)
If you want to disable this feature, set 0.
If you want to re-use a result of recent verification, set value from 1 to 7.
Old data files are erased, when there is no update for the specified period.
(1= 1 day, 2= 3 days, 3= 1 week, 4= half month, 5= 1 month, 6= 1 year, 7= unlimited)
If you want to newly create a result of this time, add 8 to period.

 One recent verification result data is saved as one file, "0_***.bin".
*** part depends on MD5 hash of the file body.
Don't modify these files, or corrupted data will make failure.

 /vd :
 If you want to save recent verification results in a different directory
from the PAR client's directory, use this setting to set path.

 /d :
 If input files exist in a different directory from checksum file,
use this setting to set the path as base-directory.
This is either absolute path or relative path from current directory.
If you include space in path, use "" to specify where is end.
Note, setting "/dC:" is same as setting current directory of C-drive.
If you want to set direct root of C-drive, you must set "/dC:/".

 for example, /dC:/data/ , /d"C:/Program Files/" , /d../data/

 When this is not set, the directory of checksum file is used.
If input files are specified with absolute path in command-line,
the parent directory of the first input file is used.

 /u :
 This setting is useful to show filename of non-supported language.
You may decode the UTF-8 encoded output with Internet Browser.


[ Supporting file format ]

Writing & reading SFV file :
 There are filename and CRC-32 checksum in each line like below;

filename_1 12345678
filename_2 23456789
filename_3 3456789A

Reading other style of SFV file :
 A filename may contain space.
A filename may be covered by "".
A filename may be started with ; (normally ; is comment).
There may be some space between filename and CRC.

"a_filename_1"   12345678
some_filename_2  23456789
other filename_3 3456789A
;filename_4      456789AB


Writing & reading MD5 file (MD5Summer style) :
 There are MD5 hash and filename after * in each line like below;

123456789ABCDEF0123456789ABCDEF0 *something_filename_1
23456789ABCDEF1023456789ABCDEF01 *something_filename_2
3456789ABCDEF1203456789ABCDEF012 *something_filename_3

Reading BSD/OpenSSL style of MD5 file :
 There are hash type (MD5), filename, and MD5 hash in each line.
There may be loss of space before/after ().

MD5 (filename_1) = 123456789ABCDEF0123456789ABCDEF0
MD5(filename_2) = 23456789ABCDEF1023456789ABCDEF01
MD5 (filename_3)= 3456789ABCDEF1203456789ABCDEF012

Reading Easy MD5 Creator style of MD5 file :
 There are filename and MD5 hash in each line.
A filename may contain space.
There must be only one space between filename and hash.

a_filename_1 123456789ABCDEF0123456789ABCDEF0
some_filename_2 23456789ABCDEF1023456789ABCDEF01
other filename_3 3456789ABCDEF1203456789ABCDEF012

