ckrange(1) UNIX System V(Essential Utilities) ckrange(1)
NAME
ckrange - prompt for and validate an integer
SYNOPSIS
ckrange [ -Q ] [ -W width ] [ -l lower ] [ -u upper ] [ -b base ] [ -d
default ]
[ -h help ] [ -e error ] [ -p prompt ] [ -k pid [ -s signal ] ]
errange [ -W width ] [ -l lower ] [ -u upper ] [ -e error ] [ -b base]
helprange [ -W width ] [ -l lower ] [ -u upper ] [ -h help ] [ -b base ]
valrange [ -l lower ] [ -u upper ] [ -b base ] input
DESCRIPTION
ckrange prompts a user and validates the response. It defines, among
other things, a prompt message whose response should be an integer in the
range specified, text for help and error messages, and a default value
(which is returned if the user responds with a RETURN).
This command also defines a range for valid input. If either the lower
or upper limit is left undefined, then the range is bounded on only one
end.
All messages are limited in length to 70 characters and are formatted
automatically. Any white space used in the definition (including
newline) is stripped. The -W option cancels the automatic formatting.
When a tilde is placed at the beginning or end of a message definition,
the default text is inserted at that point, allowing both custom text and
the default text to be displayed.
If the prompt, help or error message is not defined, the default message
(as defined under NOTES) is displayed.
Three visual tool modules are linked to the ckrange command. They are
errange (which formats and displays an error message), helprange (which
formats and displays a help message), and valrange (which validates a
response). These modules should be used in conjunction with FACE
objects. In this instance, the FACE object defines the prompt.
The options and arguments for this command are:
-Q Do not allow quit as a valid response.
-W Use width as the line length for prompt, help, and error messages.
-l The lower limit of the range is lower. Default is the machine's
largest negative integer or long.
-u The upper limit of the range is upper. Default is the machine's
largest positive integer or long.
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ckrange(1) UNIX System V(Essential Utilities) ckrange(1)
-b The base for input is base. Must be 2 to 36, default is 10.
-d The default value is default. The default is not validated and so
does not have to meet any criteria. If default is non-numeric,
ckrange returns 0 and not the alphabetic string.
-h The help message is help.
-e The error message is error.
-p The prompt message is prompt.
-k Send process ID pid a signal if the user chooses to abort.
-s When quit is chosen, send signal to the process whose pid is
specified by the -k option. If no signal is specified, use
SIGTERM.
input Input to be verified against upper and lower limits and base.
EXIT CODES
0 = Successful execution
1 = EOF on input
2 = Usage error
3 = User termination (quit)
NOTES
The default base 10 prompt for ckrange is:
Enter an integer between lower and upper [lower-upper,q,?]
The default base 10 error message is:
ERROR - Please enter an integer between lower and upper.
The default base 10 help message is:
Please enter an integer between lower and upper.
The messages are changed from ``integer'' to ``base base integer'' if the
base is set to a number other than 10.
When the quit option is chosen (and allowed), q is returned along with
the return code 3. The valrange module does not produce any output. It
returns zero for success and non-zero for failure.
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