Gasboy CFN III Manager Manual V3.6 - Manual (Page 219)

MDE-4871 CFN III Manager’s Manual for Windows® XP Embedded - Version 3.6 · August 2010 Page 20-7
How to Use the IF Command Advanced Command Files
How to Set User Variables in Command Files
The names %a through %z are user variables (a percent sign followed by an uppercase letter
is a system variable, discussed in the Making your own commands chapter). They are set with
the command SET_VAR or SET.
The full syntax of SET_VAR is:
Options: [;I] |
{variable {= | @ } [string] |
variable {+ | - | * | / | % | ^} number_value |
variable $ filename [line [column[length]]] |
variable ~ string [column [length]] |
variable ? filename |
variable # string}
variable < format number
Argument Function
none list contents of all variables
;I deletes all variables
variable = string sets variable equal to value (literal text, %
parameter number, or % variable name)
variable @ string echoes string text as prompt, sets variable
equal to line typed by user
variable {+ | - | * | / | % | ^} number_value sets variable to the result of performing the
given mathematical operation on the current
value of variable and number_value; % = mod,
^ = exclusive or
variable $ filename [line [column [length]]] sets variable to the substring at location line
column in filename, for length characters
variable ~ string [column [length]] sets variable to string; if string is followed by a
blank space and a number, column, that number
is the offset into the string, from the left, before
the remainder of string will be set to variable;
(any blank spaces in the string itself must be
enclosed in quotation marks.); the second
number, length, if present, specifies how many
characters after the offset will be included in
variable
variable ? filename sets variable to exact length in bytes of disk file
named by filename
variable # string sets variable to length in characters of string
variable < format number allows a number to be formatted into a user
variable using the same format options available
for the p1 option in EHCO. This is useful for
converting the internal format of numbers in
command files (which do not have decimal points
in them) into a form that can be used as input for
commands that require decimal points in the
correct place for different international formats.
For example, if the current international format is
USA:
set x < @M 12345
would place ‘123.45 into variable ‘x’.