- form_field_validation - data type validation for fields
+ form_field_validation - data type validation for fields
SYNOPSIS
- #include<form.h>
+ #include<form.h>
int set_field_type(FIELD *field, FIELDTYPE *type, ...);
FIELDTYPE *field_type(const FIELD *field);
void *field_arg(const FIELD *field);
@@ -18,23 +56,23 @@
DESCRIPTION
- The function set_field_type declares a data type for a
+ The function set_field_type declares a data type for a
given form field. This is the type checked by validation
functions. The types are as follows:
TYPE_ALNUM
- Alphanumeric data. Requires a third int argument, a
+ Alphanumeric data. Requires a third int argument, a
minimum field width.
TYPE_ALPHA
- Character data. Requires a third int argument, a
+ Character data. Requires a third int argument, a
minimum field width.
TYPE_ENUM
Accept one of a specified set of strings. Requires a
- third (char**) argument pointing to a string list; a
- fourth int flag argument to enable case-sensitivity;
- and a fifth int flag argument specifying whether a
+ third (char**) argument pointing to a string list; a
+ fourth int flag argument to enable case-sensitivity;
+ and a fifth int flag argument specifying whether a
partial match must be a unique one (if this flag is
off, a prefix matches the first of any set of more
than one list elements with that prefix). Please
@@ -44,37 +82,37 @@
on the stack.
TYPE_INTEGER
- Integer data, parsable to an integer by atoi(3).
- Requires a third int argument controlling the preci-
- sion, a fourth long argument constraining minimum
- value, and a fifth long constraining maximum value.
+ Integer data, parsable to an integer by atoi(3).
+ Requires a third int argument controlling the preci-
+ sion, a fourth long argument constraining minimum
+ value, and a fifth long constraining maximum value.
If the maximum value is less or equal the minimum
value, the range is simply ignored. On return the
- field buffer is formatted according to the printf
+ field buffer is formatted according to the printf
format specification ".*ld", where the '*' is
replaced by the precision argument. For details of
- the precision handling see printf's man-page.
+ the precision handling see printf's man-page.
TYPE_NUMERIC
Numeric data (may have a decimal-point part).
- Requires a third int argument controlling the preci-
- sion, a fourth double argument constraining minimum
- value, and a fifth double constraining maximum value.
+ Requires a third int argument controlling the preci-
+ sion, a fourth double argument constraining minimum
+ value, and a fifth double constraining maximum value.
If your system supports locale's, the decimal point
character to be used must be the one specified by
your locale. If the maximum value is less or equal
the minimum value, the range is simply ignored. On
return the field buffer is formatted according to the
- printf format specification ".*f", where the '*' is
+ printf format specification ".*f", where the '*' is
replaced by the precision argument. For details of
- the precision handling see printf's man-page.
+ the precision handling see printf's man-page.
TYPE_REGEXP
Regular expression data. Requires a regular expres-
- sion (char*) third argument; the data is valid if
+ sion (char*) third argument; the data is valid if
the regular expression matches it. Regular expres-
- sions are in the format of regcomp(3x) and
- regexec(3x). Please notice that the regular expres-
+ sions are in the format of regcomp(3x) and
+ regexec(3x). Please notice that the regular expres-
sion must match the whole field. If you have for
example an eight character wide field, a regular
expression "^[0-9]*$" always means that you have to
@@ -95,30 +133,30 @@
implementations.
It is possible to set up new programmer-defined field
- types. See the form_fieldtype(3x) manual page.
+ types. See the form_fieldtype(3x) manual page.
RETURN VALUE
- The functions field_type and field_arg return NULL on
- error. The function set_field_type returns one of the fol-
+ The functions field_type and field_arg return NULL on
+ error. The function set_field_type returns one of the fol-
lowing:
- E_OK The routine succeeded.
+ E_OK The routine succeeded.
- E_SYSTEM_ERROR
- System error occurred (see errno).
+ E_SYSTEM_ERROR
+ System error occurred (see errno).
- The header file <form.h> automatically includes the header
- file <curses.h>.
+ The header file <form.h> automatically includes the header
+ file <curses.h>.