The function set_field_type declares a data type for a
given form field. This is the type checked by validation
functions. The predefined types are as follows:
@@ -88,70 +89,69 @@
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
- notice that the string list is not copied, only a
- reference to it is stored in the field. So you should
- avoid using a list that lives in automatic variables
- on the stack.
+ notice that the string list is copied. So you may use
+ a list that lives in automatic variables 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.
- If the maximum value is less than or equal to the
+ 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 than or equal to the
minimum value, the range is simply ignored. On return
the field buffer is formatted according to the printf
- format specification ".*ld", where the '*' is
- replaced by the precision argument. For details of
+ format specification ".*ld", where the '*' is
+ replaced by the precision argument. For details of
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
+ 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.
- If your system supports locales, the decimal point
- character to be used must be the one specified by
- your locale. If the maximum value is less than or
- equal to 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 replaced by the precision argument.
- For details of the precision handling see printf's
+ If your system supports locales, the decimal point
+ character to be used must be the one specified by
+ your locale. If the maximum value is less than or
+ equal to 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 replaced by the precision argument.
+ For details of 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
- the regular expression matches it. 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]*$" always means that you have to
- fill all eight positions with digits. If you want to
- allow fewer digits, you may use for example "^[0-9]*
- *$" which is good for trailing spaces (up to an empty
- field), or "^ *[0-9]* *$" which is good for leading
- and trailing spaces around the digits.
+ Regular expression data. Requires a regular expres-
+ sion (char*) third argument; the data is valid if
+ the regular expression matches it. Regular expres-
+ sions are in the format of regcomp and regexec.
+ Please notice that the regular expression must match
+ the whole field. If you have for example an eight
+ character wide field, a regular expression "^[0-9]*$"
+ always means that you have to fill all eight posi-
+ tions with digits. If you want to allow fewer digits,
+ you may use for example "^[0-9]* *$" which is good
+ for trailing spaces (up to an empty field), or "^
+ *[0-9]* *$" which is good for leading and trailing
+ spaces around the digits.
TYPE_IPV4
An Internet Protocol Version 4 address. This requires
- no additional argument. It is checked whether or not
- the buffer has the form a.b.c.d, where a,b,c and d
+ no additional argument. It is checked whether or not
+ the buffer has the form a.b.c.d, where a,b,c and d
are numbers between 0 and 255. Trailing blanks in the
- buffer are ignored. The address itself is not vali-
+ buffer are ignored. The address itself is not vali-
dated. Please note that this is an ncurses extension.
- This field type may not be available in other curses
+ This field type may not be available in other curses
implementations.
- It is possible to set up new programmer-defined field
+ It is possible to set up new programmer-defined field
types. See the form_fieldtype(3x) manual page.
-
RETURN VALUE
- The functions field_type and field_arg return NULL on
+