Informática Multimedia 1995 April

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Text File | 1991-07-11 | 12.5 KB | 270 lines

MV 2.6 A Fast File Mover with wildcard shortcut support and directory removal option by Bob Eyer July 11, 1991 Syntax ------ MV SourceFile [TargetPath] [D] SourceFile is a filename or a filespec specifying what is to be moved. It may be a single filename or wildcard, as well as a shortcut such as '..\.', '.', 'C:.', or even 'C:' or a subdirectory name. TargetPath is the destination where the files will be moved. Again, this parameter supports all DOS wildcard shortcuts, such as is supported by DOS COPY and DEL, and will detect DOS's default path for a non-local drive, just as does COPY and DEL. In the event that TargetPath is not mentioned, MV will assume that the target is the local (default) directory, as does COPY. D an optional parameter which, if specified, will cause MV to attempt to remove the subdirectory mentioned in SourceFile. If D is specified, a TargetPath MUST be mentioned; otherwise, MV will interpret D as a target subdirectory. New improvements in MV: ---------------------- - Buffer size has been increased in the current version, thus providing a small increase in the speed of MV's copy mode. - A problem in all previous versions, that the date/time stamp was not duplicated on the target file when a file is moved to a different drive, is now corrected. The current version will preserve the date/time and attribute stamps under copy mode, just as it does under rename mode. - The old attribute exclusionary condition has been liberalised. In previous versions, move operations were excluded to files which had the Read Only, System, or Hidden attributes. In the current version, the exclusion has been narrowed to System files. As a result, it is now possible to move Read Only or Hidden files, as well as Reset or Archive files. However, the exclusion against System files remains in force. The purpose of this exclusion is to prevent the user from moving Operating System files from his boot drive, an operation which would require him/her to reformat or re-SYS, and reload then that drive from backups before he/she could use it again. - MV will now issue the message NOT COPIED for a move attempt to another drive, where insufficient space exists on that drive; however, MV will pass control to the next file - and, if it is small enough to fit, that file will be moved normally. - Source files are now opened in SHAREd mode - which means that, in local area networks where file sharing is achieved through the use of DOS SHARE, an attempt of the user to move a file which is in use by another user will merely pause processing slightly or cause a documented return without a processing halt. Discussion ---------- There are many file movers in the PD/shareware market; some much smaller than MV 2.6, others considerably larger in size and sporting menus. However, the smallest of the genre characteristically do not support DOS wildcard shortcuts, and only a few of the larger ones offer consistent such support. This is the primary reason why I wrote this little utility. I got tired of having to type 'MOVE *.* WORK' every time I wanted to transfer everything in the local directory to the WORK subdirectory. A command like that should go like this: 'MV . WORK' saving, in principle, two keystrokes, just like a COPY shortcut. I also found it tedious to change subdirectories in order to transfer them back again. I wanted it to function just like a COPY command, so that I could say things like 'MV WORK' and get all the files back again without having to switch directories. MV requires video input only for confirm/no confirm on overwriting a file and for interrupting processing, where the user wants to break execution immediately after moving the current file. But in both cases, console input is redirectable (so MV can be run remotely through a communications gateway) and uses just one key-stroke (no ENTER key). The Space Bar is used for interrupting processing between files. Y (or y) is used for confirm on overwrite. The best way to check out MV is to treat it exactly like a COPY command on a series of files you can afford to lose; there should be no difference, except for the file naming function of COPY: MV does not support moving a source file to a target area with a different base name specified on the commandline; and MV uses an optional commandline parameter "D" to instruct the program whether to attempt to remove the source directory. A short discussion of examples follows: Suppose we have a file called ABC.EXE in directory \COMPILE and we've been working in directory \COMPILE\ABC to compile a new version of ABC.EXE. We now wish to update the COMPILE directory version. MV handles the job nicely: MV *.exe .. This command will direct the new EXE file to be moved to the parent directory and will result in an overwrite situation, assuming the old version is in that directory. Hitting Y in response to the prompt will cause the overwrite. The video display will be: ..\ABC.EXE exists. Overwrite? [Y/N]y ABC.EXE --> ..\ABC.EXE 1 file(s) moved Note the confirming message '1 file(s) moved'. MV always issues either this confirmation with the number of files affected or the message 'No file(s) moved' where no action was taken, say where all the source files are System files. Where the target file to be overwritten is Read Only, the attempt to overwrite will cause no action to be taken, and there will be a message that the target file was not deleted. The reason for this is that, before each overwrite, MV first attempts to delete the target file, in preparation for the new write. If it cannot, it just returns with the appropriate diagnostic message. Other examples -------------- MV ABC.DOC C:LM Moves ABC.DOC to the LM subdirectory of the default directory of C: MV c:lm\abc.doc Moves ABC.DOC back from the LM subdirectory of the default path of C: (Notice that this example has no explicit target path, and is assumed to be the default directory.) MV XYZ C:\ Moves XYZ to the root directory of C: MV XYZ C: Moves XYZ to the default directory of C: MV . ..\A Moves everything in the current directory to the A subdirectory of the current directory's parent. MV . ..\..\B Moves everything in the current directory to the B subdirectory of the current directory's grandparent. MV ..\..\B Moves everything in the B subdirectory of the current directory's grandparent to the current directory. MV W . D Moves everything in the W subdirectory to the current directory and then removes the W subdirectory. Errors ------ MV thoroughly accounts for all errors and displays the appropriate status message with each file on which the program operates. 1. No parameters on the command line. In this case, MV will return a short help screen and DOS error level of 1. 2. No files satisfying the Source filespec. MV will return the message 'No such file(s)' and error level of 1. 3. Space bar is hit. MV responds by halting with the message 'Processing interrupted' and error level of 1. However, MV does not permit the spacebar halt to affect the integrity of a pending file transfer. MV holds the halt instruction from the keyboard buffer until the pending file is completely transferred. 4. Source file has the System attribute. MV takes no action, issuing a 'NO ACTION - System file' message. 5. Copy/rename operation not complete or erroneous. MV returns the message that the source file has not been copied, proceeds to delete any possible remnant in the target area, with a message about no deletion if not complete, and then returns control to the next entry. 6. MV detects duplicate in target area. See Example 1 above for discussion. DISCLAIMER: ========== This program is circulated as freeware without any guarantee or warranty; and the user, by downloading this program, or any variant thereof or by receiving it or any of its versions in any other form, agrees to accept full responsibility for its use. It is therefore understood that the user accepts this program or any previous version as is. Bob Eyer The author may also be reached at Compuserve [73230,2620] ROSE MEDIA 416-733-2285 (Main Conf) Toronto CMIX 416-277-2363 (Main Conference) Canada CANADA REMOTE 416-629-7044 (IBM Conf) ----------------------------------------------------------------- End of documentation. ----------------end-of-author's-documentation--------------- Software Library Information: This disk copy provided as a service of Public (software) Library We are not the authors of this program, nor are we associated with the author in any way other than as a distributor of the program in accordance with the author's terms of distribution. 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