The ifx_gl_ismpunct() function
The ifx_gl_ismpunct() function determines whether a multibyte character contains a punctuation character.
Syntax
#include <ifxgls.h>
...
int ifx_gl_ismpunct(mb, mb_byte_limit)
gl_mchar_t *mb;
int mb_byte_limit;- mb
- A pointer to the multibyte character whose character classification you want to determine.
- mb_byte_limit
- The integer number of bytes to read from mb to try to form a complete multibyte character. If mb_byte_limit is IFX_GL_NO_LIMIT, the ifx_gl_ismpunct() function reads as many bytes as necessary from mb to form a complete character.
| Valid in client application | Valid in DataBlade® UDR |
|---|---|
| Yes | Yes |
Usage
The ifx_gl_ismpunct() function
tests whether mb is in the punct character class
according to the rules of the current locale. The punct character
class contains the following characters:
- The single-byte ASCII punctuation characters: ! @ # $ % ^ & * ( ) - _ = + \ | ' ~ [ ] { } ; : ' , . / < > ?
- Any non-ASCII punctuation characters that the locale might define
Graphic characters that are not really punctuation characters have traditionally been put in the punct class; instead they are in the graph class. Characters in this class are also in the graph and print classes. No characters in the upper, lower, alpha, digit, xdigit, blank, space, or cntrl classes are in this class.
Locale information
The LC_CTYPE category of the current locale affects the behavior of this function because it defines the punct character class.
Return values
- >0
- The *mb character is in the punct character class.
- 0
- The function was not successful, and the error number is set to indicate the cause. See the Errors section.
Errors
This function does not return a unique
value to indicate an error. If an error occurred, the function returns
0 and sets the ifx_gl_lc_errno() error number to
one of the following values.
- IFX_GL_EILSEQ
- The *mb value is not a valid multibyte character.
- IFX_GL_EINVAL
- The function cannot determine whether mb is a valid multibyte character because it would need to read more than mb_byte_limit bytes from mb. If mb_byte_limit is less than or equal to 0, this function always returns this error.