Magnum One

home *** CD-ROM | disk | FTP | other *** search

/ Magnum One / Magnum One (Mid-American Digital) (Disc Manufacturing).iso / d12 / dc104.arc / DC.DOC < prev next >

Wrap

Text File | 1988-09-15 | 14.7 KB | 330 lines

DC - Directory Control Version 1.04 by Peter Esherick Contact via: Albuquerque PC Users' Group or Albuquerque RBBS 296-7672, John Maio, sysop Midnight Express 836-9576, Terry Stein, sysop Surya 294-9601, Paramjeet Singh, sysop ARPANET <ESHERIC@SANDIA-2.ARPA> Command DC ---------- Purpose: To allow selective copying, moving, deleting and browsing of files displayed in a directory listing. Format: DC [d:][source-path] [d:][dest-path] [/O,N,E,D,or S][/F][/V] Remarks: This program is closely based on the CO and DR programs, both written by Michael J. Mefford and published in PC Magazine, vol.6, #17 and #21, 1987. I have combined features from these two programs and also added a number of new features of my own. This program is released into the public domain, as is, with no warranties of any kind. I will be happy to supply source code to any interested party, with the request that if you make any significant changes, modifications, or improvements that you please share these changes, preferably in source code form, with me and the rest of the PC user community. Usage notes: The source and destination directory pathnames are both optional. Options, specified by a "/" followed by a letter, may appear either before or after the pathnames. The options are as follows: /N Sort directory by filename /E Sort directory by extension /D Sort directory by date and time /S Sort directory by file size /O Use original order, i.e. do not sort directory at all. /V Turn on DOS Verify switch for disk file writes /F Fast display on IBM Color display adapters (no snow check) DC comes up displaying the "source" or "working" directory. A brief menu of optional commands is displayed to the right of the directory dispaly. You may move up and down the directory list with the up and down arrow keys on the cursor keypad. Files may be individually copied, deleted, moved or renamed by pressing the function keys F1 through F4, respectively. Alternatively, a number of files may be selected, or "marked" using the grey + and - keys on the right side of the keypad. After marking, pressing the appropriated function key will apply the chosen operation to the entire group of files. Different directories can be displayed in two ways. One is to press the F9 function key and enter a new drive and path name. Alternatively, if you want to move to different sub-directories on the same drive, you can simply press the "Enter" key after using the up or down arrow keys to high-light the desired subdirectory. Note that as always within DOS, ".." denotes the parent of a given subdirectory, i.e. the level above the currently displayed directory. Just as pressing Enter lets you view a new directory, pressing Enter when a filename is highlighted lets you view the contents of the file. In the default mode the display is wrapped at the edge of the screen if a line is more than 80 characters wide. This option can be toggled by pressing W. Display of non-ascii characters can be toggled with the Ascii and Blank options by pressing A or B. In Ascii mode only strings of 5 or more normal ascii characters (including tab or space) are displayed. This is useful for viewing the messages conatained in an .EXE or .COM file. With the Blank option, non-ascii characters are replaced with a blank or space. A final option, "*", masks the high-order bit of non-ascii characters to make wordstar files readable. Key by key summary of commands: Esc Exit program and return to original directory. Alt-Q Exit program leaving the currently displayed dir as the current default drive and directory for DOS. Grey + Mark current file entry, if not a subdirectory or hidden or Ins file, and advance cursor to next line. Grey - Remove mark on current file, and advance cursor to next line. or Del The following functions operate on the marked files, if any, otherwise they operate on the currently highlighted file, provided it is not a sub-directory entry. If the operation is successful the mark is replaced with an asterix (*), if unsuccessful the file is passed over, leaving the mark, and the program proceeds on to the next marked file. F1 Copy file(s) via a read/write sequence to requested target F2 Delete file(s) after asking for confirmation. F3 Move file(s), ie Copy to requested target, delete source. Where possible this function is performed using an across directory rename instead of a file read/write sequence. F4 Rename file(s) or <dir> within the currently displayed directory. F5 Clear all marks F6 Mark all remaining files, ie those not marked with an "*". F7 Swap marked and unmarked files. The following three functions change the active source and dest directories: F8 Swap the Working Directory (source) and the Default Destination Directory F9 Prompt for a new Working (source) Directory F10 Prompt for a new Default Destination Directory The directory can be re-sorted by typing: Alt-N Sort by filename Alt-E Sort by file extension (eg .COM vs .DOC) Alt-D Sort by date and time Alt-S Sort by file size Alt-O Re-read and display dir in original, unsorted order Additional commands not appearing in the menu: Alt F1 Protected copy - bypass filenamess that already exist on target Alt R Re-read working directory. Required after changing diskettes in a floppy-disk drive. Alt C Copy (Duplicates F1) Alt M Move (Duplicates F3) Alt V View (Duplicates Return) View Mode commands: Alt W Toggle word wrap/horizontal scroll Alt A Toggle Ascii string display Alt B Toggle blanking of non-Ascii characters * Toggle wordstar bit mask (shift non-ascii high-order characters (from 128 to 255) down into the displayable ascii range of 1 to 127. Customizing DC.COM Version 104e of DC can now be customized to display the menu and dir text in the colors of your choice. Rather than building into DC.COM an automatic color setting function, I have fallen back on the hacker's choice of letting you patch DC.COM with debug. If this scares you, learn how to use debug, ask a friend, or learn to love the ridiculous choice of colors that is built in to this version. I use a monochrome screen, so it just hasn't been a big thing to me before. Besides understanding DEGUG you need to know two other things: how the PC video display cards translates hex numbers into colors, and what locations to patch (change) in DC.COM. The table below lists the correspondance between hex numbers and foreground and background colors on the PC. To get the correct number for a combined foreground color plus background number, you add the hex digits for the two. For example, brown on a blue background is given by 16h, where as brown on a green background is given by 26h. Note that in a hexidecimal representation, which is what debug uses, the first digit is the background color, while the second (least significant) digit gives the foreground color. Foreground (normal) Foreground (intense) Background -------------------------------------------------------------- 0 black 8 dark gray 0 black 1 blue 9 light blue 10h blue 2 green 0Ah light green 20h green 3 cyan 0Bh light cyan 30h cyan 4 red 0Ch light red 40h red 5 magenta 0Dh light mag. 50h magenta 6 brown 0Eh yellow 60h brown 7 gray 0Fh intense white 70h gray OK, now you now how to define a color. If you are a veteran hacker, than the next table tells you all you need to know. If your not, hold on, we'll get you there. Location Name Default Where used ------------------------------------------------------ 103h NORMAL 02 Directory display 104h INTENSE 0Bh Pathname display 105h MENU 16H Menu display 106h BORDER 1EH Menu border 107h INVERSE 74H Highlighted dir entry Now, to use DEBUG to change the default colors, first (1) Find DEBUG.COM from your DOS disk if you haven't already got it (2) Use COPY to make a copy of DC.COM on a working disk so you don't mess up your one and only copy. (3) Assuming DEBUG is in the default directory or accessible via the path command, and that DC.COM is present in the default directory of the currently logged disk, type the following (at the DOS prompt): DEBUG DC.COM (Debug will respond with a hyphen -) d103l5 (Debug will display the current values of the colors) e103 (Debug will display the first color, followed by a '.', for example 02. At this point type in the one or two digit number that you want to use for the NORMAL color. If you don't want to change it, press the space bar. After entering the number or a space, debug will go on to the next color, and you repeat the last step until you have entered something for all five colors. If you want to quit and go back, press the Enter (return) key, and re- enter the e103 command at the '-' prompt. When your done here you only two more steps to go: W (This command writes the modified file back on to the disk. (Debug responds with "Writing 17F3 bytes", or something close) Q (And the Q command quits DEBUG and returns you to DOS. Other Patch Locations: Switch character (108h): For the UNIX hackers, there's one more byte that you can change at your pleasure, and that is one I have labeled SWITCH at location 108h in the DC.COM file. The character/byte at location 108h is used to identify an option entered on the DOS command line when you first call up DC. Normally this is '/', so that options would be specified by /d or /o. By changing the byte at location 108 to '-', options can be entered as -d or -o. This lets you use '/' in your path names, so that instead of entering command lines like: DC C:\COMM\DOWN D:\UTIL /D You can now enter: DC C:/COMM/DOWN D:/UTIL -D or DC C:\COMM\DOWN -d D:\UTIL or DC -d C:/COMM\DOWN D:/UTIL -D But not: DC C:\COMM\DOWN D:/UTIL /D (This will clearly confuse DC) (Note that since the problem is with the option switch, and since there are no options entered with pathnames once the programming is running, you can use either / or \ as a path delimiter when entering a destination or changing the path with F9 or F10 keys.) Snow Checking (109H): When DC starts up it checks BIOS data area (Segment 40) to see if the current display adapter is a monochrome or color card. If it isn't mono, then DC will query the display adapter, before writing a character to the display memory, to see if it is ok to do so. This procedure is necessary to avoid spurious dots or "snow" on old IBM Color Graphics Adapters (CGA's). Unfortunately, this also slows things down quite a bit. If you prefer speed over a clean display update, or if you have an EGA or other color display adapter that doesn't need to do this checking, then put 0FFh in the byte at 109h. A zero at this location will enable snow checking on all but the monochrome display adapter (which never needs it anyway). If you want to temporarily try out what this patch does, use the /F option switch when you start up DC. Acknowledgments: My thanks to Steve Grandi of U. Arizona for some helpful suggestions. Steve and I are currently working on revision 1.05 that adds a DOS shell and some other new functions to DC. Steve has also implemented a UNIX style "-" switch version that uses "/" instead of "\" as the path delimiter. Revision history: DC version 1.04(f) - June 13, 1988 Add Ins/Del as duplicates to Grey +/- keys Fix Backspace bug that occurred on original PC's Work on display speed/ cursor overrun problem Minor(?) change in memory management Last ditch- moved data to end of file to save space DC version 1.03(f) - May 9, 1988 Save and restore original text attribute Simplify clutter of clear window subroutines Add customizable option switchchar for UNIX hacks Fix bug occurring in copy of 0 byte size files Fix error that occurs when rename is applied to destination dir Fix writing to prn once more Add Refresh to original order sort Minor fixes and revisions to save a few bytes Add rename for directories More work on error recovery - write protected target DC version 1.03 - April 6, 1988 Add customizable colors and switch-char Add Rename for directories Automatically re-read dir with Alt-O original order sort More work on error recovery - write protected target DC version 1.02 - March 14, 1988 Added Alt-F1 "Protected Copy" function. Tweaked file view function to save 4 bytes. Now highlights last sub-dir viewed when returning to parent dir DC version 1.01 - March 7, 1988 Modified method of handling directory changes F9 (change work dir) now relative to displayed work dir Allow specifying both source and dest paths on entry Earlier versions COD1 through COD9: Dec '87 to Mar. '88 Combined DR and CO, Added ability to change directories Added more screen info on bytes free Added "spedometer" display of marked files, bytes Added "View" options to toggle word wrap, Horizontal scroll blanking or full suppression of non-ASCII Features that could be added: Sub-directory functions like RMDIR and MKDIR on directories Improved error messages on disk not ready, etc View options: hex dump a la Buerg's LIST.COM search/scan for text display current horizontal scroll position improve provisions for re-synch in mode toggles