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Text File | 1992-03-04 | 12.3 KB | 381 lines

┌──────────────────────────────────────────────────────────────┐ │ ENHANCED SET INSTRUCTION 2.12 - (C) 1992 STERN Marc │ └──────────────────────────────────────────────────────────────┘ All you always wanted to put in an environment variable and never dare to ask DOS for... XSET: The way to easily write efficient batch files. XSET allows you to put EVERYTHING you want in a variable of the current environment and use it as if you gave it the value with the standard DOS command 'SET'. You will be able to write very efficient batch files including string manipulation, calculation,... XSET is the more powerful environment variable manipulation program you never saw. It also has the easiest and most intuitive user interface it is possible to write. XSET is fully compatible with MS-DOS 5.0, DR-DOS 6.0, NDOS & 4DOS 4.0 . XSET has five major features: ════════════════════════════ - XSET permits to catch the output of any command (internal or external) or program and put it into an environment variable. - XSET has several built-in commands to modify the output of a program or a string given on the command-line (extract a part of a string,...) - XSET has a built-in full floating-point calculation functionalitie: ────────────────────────────────────────────── You can make incremental loops, input a calculation string and output a number,... - XSET can manage variable contents of more than 128 characters (your path can now be as long as you want) - XSET has some other built-in commands to give you access to some system datas (date, time, ...) * type XSET with no parameters to have the full description of all functionalities (parameters and effects). Example of use: ══════════════ Rem: in all the examples, the command XSET and the its built-in commands are typed in uppercase and the environment variables names are in lowercase. This is only for readability; when you type it, you may mix lowercases and uppercase as you want. The case is only significant for arguments strings you enter on the command-line. The 'C:>' represents your prompt, do not type it! 1) C:> XSET datvar DATE Puts the date into the variable 'datvar' Type the command SET and you will see all the environment variables: ... COMSPEC=... DATVAR=dd-mm-yy (where dd,mm,yy are replaced by current day, month and year) ... You can now use the variable 'datvar' in a batch file: ECHO the date is %datvar% 2) C:> XSET name INPUT "Enter your name: " Inputs a string from the keyboard (usual answer terminated by <Enter>) and puts it into the variable 'name'. You can now use the variable 'name' in a batch file to enter personal environment for each user: ECHO Hello %name%, beginning the work CD \%name% 3) C:> CD | XSET dirname Puts the output of the command 'CD' (i.e. the current directory name) into the variable 'dirname'. You can write a batch file to go to another directory, execute a program and come back into the current one rem ------------------ CD | XSET dirname CD \otherdir myprog ... cd %dirname% set dirname= rem ------------------ 4) You can write a batch file with automatic loops rem ------------------ set loop=1 :next if %loop% == 20 goto end ....... anything you want ....... XSET loop MATH %loop% + 1 goto next :end rem ------------------ 5) You can write a batch file where the user may enter a calculation and use it as a number rem ------------------ XSET calc INPUT "Enter your calculation: " XSET result MATH %calc% echo %calc% = %result% rem ------------------ 6) More complex example of a login procedure rem ---------------------- LOGIN.BAT -------------------------------- echo off cls rem Ask login name from keyboard rem ---------------------------- XSET login INPUT "Enter login name : " rem Test if directory corresponding to login name already exist rem ----------------------------------------------------------- if exist c:\%login%\nul goto LOGIN rem Directory does not exist, ask to create it rem ------------------------------------------ echo: echo Login '%login%' does not exist. echo Do you want to create it? (Y/N) rem Only "yYnN" keys are allowed rem ---------------------------- XSET ask KEY "yYnN" XSET ask UPPER %ask% if "%ask%" == "N" goto INPUT rem Create directory rem ---------------- md c:\%login% :LOGIN set ask= cd \%login% if exist autouser.bat autouser.bat rem ----------------------------------------------------------------- 7) And much more ... Installation: ════════════ - XSET.EXE is ready to use; no installation, but it is a SHAREWARE version. - To get a registered version of XSET, print the XSET.REG file, fill it and send it to me; you will then receive the password mandatory to use the program REGISTER. You will receive each new upgrade for free!!! Problems: ════════ - If the size of your environment space is not big enough, you will receive an error message 'XSET : not enough environment space.' This is not a bug, it is because the environment space reserved for the variables is too small. You must increase it by modifying the line 'SHELL=...' in your CONFIG.SYS. By default, DOS reserves 256 bytes environment space; this is generally insufficient. Try 640 bytes (or more if you need it) by adding '/e:640' at the line 'SHELL=...' ex: SHELL=COMMAND.COM /E:640 /P If this problem is encountered in a secondary shell (i.e. you run the batch file from a menu that runs a secondary shell) here is a way to work around the problem (this is a DOS problem that could be avoided by the program that runs the secondary shell): put in your AUTOEXEC.BAT a line such as: SET TO_DELETE=something_very_long_to_be_sure_this_takes_very_much_space and, before using variables in the secondary shell delete this --------- variable with the command: SET TO_DELETE= Additional information: 32.2.427.98.52 (after 19h) ══════════════════════ or 32.2.465.01.19 E-mail: stern@mble.philips.be Syntax: XSET <dosvar> COMMAND [args..] Commands Arguments Action and value assigned to <dosvar> -------- --------- ------------------------------------- INPUT [prompt] echo <prompt> and read input from standard input ex: XSET name INPUT Enter your name: PASSWD [prompt] same as INPUT without echoing APPEND {string} old value + <string> ex: XSET path APPEND ;c:\msc600\bin;c:\msc600\binb Rem: this allow you to bypass the 128 characters limit of DOS KEY string key pressed (must be in <string> if not empty) ex: XSET k KEY 123aAbB only keys 123aAbB are allowed ex: XSET k KEY all are allowed LENGTH {string} number of characters in <string> LEFT n {string} the leftmost <n> characters of <string> ex: XSET var LEFT 3 abcdef puts 'abc' in variable 'var' MID m n {string} the <n> characters in <string> starting from the <m>th RIGHT n {string} the rightmost <n> characters of <string> UPPER {string} uppercase <string> LOWER {string} lowercase <string> CHANGE s1 s2 {s3} change <s1> by <s2> in <s3> SEARCH str1 {str2} portion of <str1> matching <str2> <str2> is a UNIX-like regular expression. A regular expression is one or more occurrences of one or more characters. The following symbols are treated specially: ^ start of line $ end of line . any character \ quote next character * match zero or more time preceding character (or character set) + match one or more time preceding character (or character set) [] set of characters ('^' means non-inclusion, '-' means range) ex: [aeiou0-9] match a, e, i, o, u, and 0 thru 9 [^ae0-9] match anything but a, e and 0 thru 9 ^a match any line beginning by 'a' v$ match any line ending by 'v' XSET t SEARCH "^T.*K$" "This line will be OK" XSET t SEARCH "^T.*[1-9].*K$" "Warning: This line will not be OK" XSET t SEARCH "^T.*K$" "This line will not be OK!" XSET t SEARCH "^T.*K" "This line will be OK!" XSET t SEARCH "T.*K$" "Warning: This line will be OK" COUNT {string} the number of words in <string> WORD n {string} pick the <n>-th word in <string> LINE n read the <n>-th line from standard input MATH {expr} result of calculation of expression <expr> valid operators: + - * / () on floats + - * / () %% on integers ex: XSET var MATH 3+(2*5) + %new% MIN ┌{str1...strn} minimum or maximum of numbers or strings list MAX └{num1...numn} (one string may not contain <space> or <tab>) ex: XSET var MIN 3.6 4 9.02 ex: XSET var MAX 3.6 4 abc 3.9j DATE system date (dd-mm-yy) DAY day of the month (1-31) MONTH month number (1-12) YEAR system year (4 digits) DAYOFWEEK day in the week ( 0 = sunday,... ) TIME system time (hh:mm:ss - 24h format) HOUR system hour (0-24) MINUTE system minutes (0-59) SEC system seconds (0-59) BYTEFREE [drive] number of bytes free on specified (or current) drive DENSITY [drive] drive density (360, 720, 1200, 1440 or 0) DIR [drive] current directory of <drive> or current drive FPATH {file} full pathname of a filename FDRIVE {file} drive of a filename FDIR {file} drive & directory of a filename FEXT {file} extension of a file name (no period included) FNAME {file} name of a file without extension FXNAME {file} name & extension of a file FSIZE {file} size of a file TRUENAME {file} full truename of a file ERRORLEVEL errorlevel code of last command Rem: This command is only valid for - MS-DOS 3.20, 3.21, 3.30, 4.0, 4.01 & 5.0 - NDOS 6.0 Results are unpredictable under other OS or command processor like 4DOS, DR-DOS, PC-DOS,... [...] are optional arguments. If arguments {...} are missing, they are read from the standard input. Non quoted arguments on command-line will be separated by 1 blank. Rem: 'XSET var' is equivalent to 'XSET var INPUT' or 'XSET var LINE 1' and is more performant.