std::ctype_byname< _CharT >(3cxx) std::ctype_byname< _CharT >(3cxx)
NAME
std::ctype_byname< _CharT > - class ctype_byname [22.2.1.2].
SYNOPSIS
Inherits std::ctype< _CharT >.
Public Types
typedef const int * __to_type
typedef _CharT char_type
typedef ctype< _CharT >::mask mask
Public Member Functions
ctype_byname (const char *__s, size_t __refs=0)
ctype_byname (const string &__s, size_t __refs=0)
const char_type * is (const char_type *__lo, const char_type *__hi,
mask *__vec) const
Return a mask array.
bool is (mask __m, char_type __c) const
Test char_type classification.
char narrow (char_type __c, char __dfault) const
Narrow char_type to char.
const char_type * narrow (const char_type *__lo, const char_type *__hi,
char __dfault, char *__to) const
Narrow array to char array.
const char_type * scan_is (mask __m, const char_type *__lo, const
char_type *__hi) const
Find char_type matching a mask.
const char_type * scan_not (mask __m, const char_type *__lo, const
char_type *__hi) const
Find char_type not matching a mask.
const char_type * tolower (char_type *__lo, const char_type *__hi)
const
Convert array to lowercase.
char_type tolower (char_type __c) const
Convert to lowercase.
const char_type * toupper (char_type *__lo, const char_type *__hi)
const
Convert array to uppercase.
char_type toupper (char_type __c) const
Convert to uppercase.
char_type widen (char __c) const
Widen char to char_type.
const char * widen (const char *__lo, const char *__hi, char_type
*__to) const
Widen array to char_type.
Static Public Attributes
static const mask alnum
static const mask alpha
static const mask blank
static const mask cntrl
static const mask digit
static const mask graph
static locale::id id
The facet id for ctype<char_type>
static const mask lower
static const mask print
static const mask punct
static const mask space
static const mask upper
static const mask xdigit
Protected Member Functions
virtual const char_type * do_is (const char_type *__lo, const char_type
*__hi, mask *__vec) const
Return a mask array.
virtual bool do_is (mask __m, char_type __c) const
Test char_type classification.
virtual char do_narrow (char_type, char __dfault) const
Narrow char_type to char.
virtual const char_type * do_narrow (const char_type *__lo, const
char_type *__hi, char __dfault, char *__to) const
Narrow char_type array to char.
virtual const char_type * do_scan_is (mask __m, const char_type *__lo,
const char_type *__hi) const
Find char_type matching mask.
virtual const char_type * do_scan_not (mask __m, const char_type *__lo,
const char_type *__hi) const
Find char_type not matching mask.
virtual const char_type * do_tolower (char_type *__lo, const char_type
*__hi) const
Convert array to lowercase.
virtual char_type do_tolower (char_type __c) const
Convert to lowercase.
virtual const char_type * do_toupper (char_type *__lo, const char_type
*__hi) const
Convert array to uppercase.
virtual char_type do_toupper (char_type __c) const
Convert to uppercase.
virtual char_type do_widen (char __c) const
Widen char.
virtual const char * do_widen (const char *__lo, const char *__hi,
char_type *__dest) const
Widen char array.
Static Protected Member Functions
static __c_locale _S_clone_c_locale (__c_locale &__cloc) throw ()
static void _S_create_c_locale (__c_locale &__cloc, const char *__s,
__c_locale __old=0)
static void _S_destroy_c_locale (__c_locale &__cloc)
static __c_locale _S_get_c_locale ()
static const char * _S_get_c_name () throw ()
static __c_locale _S_lc_ctype_c_locale (__c_locale __cloc, const char
*__s)
Detailed Description
template<typename _CharT>
class std::ctype_byname< _CharT >" class ctype_byname [22.2.1.2].
Member Function Documentation
template<typename _CharT > virtual const char_type* std::ctype< _CharT
>::do_is (const char_type * __lo, const char_type * __hi, mask * __vec)
const [protected], [virtual], [inherited]
Return a mask array. This function finds the mask for each char_type in
the range [lo,hi) and successively writes it to vec. vec must have as
many elements as the input.
do_is() is a hook for a derived facet to change the behavior of
classifying. do_is() must always return the same result for the same
input.
Parameters
__lo Pointer to start of range.
__hi Pointer to end of range.
__vec Pointer to an array of mask storage.
Returns
__hi.
Implements std::__ctype_abstract_base< _CharT >.
template<typename _CharT > virtual bool std::ctype< _CharT >::do_is (mask
__m, char_type __c) const [protected], [virtual], [inherited]
Test char_type classification. This function finds a mask M for c and
compares it to mask m.
do_is() is a hook for a derived facet to change the behavior of
classifying. do_is() must always return the same result for the same
input.
Parameters
__c The char_type to find the mask of.
__m The mask to compare against.
Returns
(M & __m) != 0.
Implements std::__ctype_abstract_base< _CharT >.
template<typename _CharT > virtual char std::ctype< _CharT >::do_narrow
(char_type __c, char __dfault) const [protected], [virtual],
[inherited]
Narrow char_type to char. This virtual function converts the argument
to char using the simplest reasonable transformation. If the conversion
fails, dfault is returned instead.
do_narrow() is a hook for a derived facet to change the behavior of
narrowing. do_narrow() must always return the same result for the same
input.
Note: this is not what you want for codepage conversions. See codecvt
for that.
Parameters
__c The char_type to convert.
__dfault Char to return if conversion fails.
Returns
The converted char.
Implements std::__ctype_abstract_base< _CharT >.
Referenced by std::ctype< char >::narrow().
template<typename _CharT > virtual const char_type* std::ctype< _CharT
>::do_narrow (const char_type * __lo, const char_type * __hi, char
__dfault, char * __to) const [protected], [virtual], [inherited]
Narrow char_type array to char. This virtual function converts each
char_type in the range [__lo,__hi) to char using the simplest
reasonable transformation and writes the results to the destination
array. For any element in the input that cannot be converted, __dfault
is used instead.
do_narrow() is a hook for a derived facet to change the behavior of
narrowing. do_narrow() must always return the same result for the same
input.
Note: this is not what you want for codepage conversions. See codecvt
for that.
Parameters
__lo Pointer to start of range.
__hi Pointer to end of range.
__dfault Char to use if conversion fails.
__to Pointer to the destination array.
Returns
__hi.
Implements std::__ctype_abstract_base< _CharT >.
template<typename _CharT > virtual const char_type* std::ctype< _CharT
>::do_scan_is (mask __m, const char_type * __lo, const char_type *
__hi) const [protected], [virtual], [inherited]
Find char_type matching mask. This function searches for and returns
the first char_type c in [__lo,__hi) for which is(__m,c) is true.
do_scan_is() is a hook for a derived facet to change the behavior of
match searching. do_is() must always return the same result for the
same input.
Parameters
__m The mask to compare against.
__lo Pointer to start of range.
__hi Pointer to end of range.
Returns
Pointer to a matching char_type if found, else __hi.
Implements std::__ctype_abstract_base< _CharT >.
template<typename _CharT > virtual const char_type* std::ctype< _CharT
>::do_scan_not (mask __m, const char_type * __lo, const char_type *
__hi) const [protected], [virtual], [inherited]
Find char_type not matching mask. This function searches for and
returns a pointer to the first char_type c of [lo,hi) for which is(m,c)
is false.
do_scan_is() is a hook for a derived facet to change the behavior of
match searching. do_is() must always return the same result for the
same input.
Parameters
__m The mask to compare against.
__lo Pointer to start of range.
__hi Pointer to end of range.
Returns
Pointer to a non-matching char_type if found, else __hi.
Implements std::__ctype_abstract_base< _CharT >.
template<typename _CharT > virtual const char_type* std::ctype< _CharT
>::do_tolower (char_type * __lo, const char_type * __hi) const
[protected], [virtual], [inherited]
Convert array to lowercase. This virtual function converts each
char_type in the range [__lo,__hi) to lowercase if possible. Other
elements remain untouched.
do_tolower() is a hook for a derived facet to change the behavior of
lowercasing. do_tolower() must always return the same result for the
same input.
Parameters
__lo Pointer to start of range.
__hi Pointer to end of range.
Returns
__hi.
Implements std::__ctype_abstract_base< _CharT >.
template<typename _CharT > virtual char_type std::ctype< _CharT
>::do_tolower (char_type __c) const [protected], [virtual],
[inherited]
Convert to lowercase. This virtual function converts the argument to
lowercase if possible. If not possible (for example, '2'), returns the
argument.
do_tolower() is a hook for a derived facet to change the behavior of
lowercasing. do_tolower() must always return the same result for the
same input.
Parameters
__c The char_type to convert.
Returns
The lowercase char_type if convertible, else __c.
Implements std::__ctype_abstract_base< _CharT >.
Referenced by std::ctype< char >::tolower().
template<typename _CharT > virtual const char_type* std::ctype< _CharT
>::do_toupper (char_type * __lo, const char_type * __hi) const
[protected], [virtual], [inherited]
Convert array to uppercase. This virtual function converts each
char_type in the range [__lo,__hi) to uppercase if possible. Other
elements remain untouched.
do_toupper() is a hook for a derived facet to change the behavior of
uppercasing. do_toupper() must always return the same result for the
same input.
Parameters
__lo Pointer to start of range.
__hi Pointer to end of range.
Returns
__hi.
Implements std::__ctype_abstract_base< _CharT >.
template<typename _CharT > virtual char_type std::ctype< _CharT
>::do_toupper (char_type __c) const [protected], [virtual],
[inherited]
Convert to uppercase. This virtual function converts the char_type
argument to uppercase if possible. If not possible (for example, '2'),
returns the argument.
do_toupper() is a hook for a derived facet to change the behavior of
uppercasing. do_toupper() must always return the same result for the
same input.
Parameters
__c The char_type to convert.
Returns
The uppercase char_type if convertible, else __c.
Implements std::__ctype_abstract_base< _CharT >.
Referenced by std::ctype< char >::toupper().
template<typename _CharT > virtual char_type std::ctype< _CharT >::do_widen
(char __c) const [protected], [virtual], [inherited]
Widen char. This virtual function converts the char to char_type using
the simplest reasonable transformation.
do_widen() is a hook for a derived facet to change the behavior of
widening. do_widen() must always return the same result for the same
input.
Note: this is not what you want for codepage conversions. See codecvt
for that.
Parameters
__c The char to convert.
Returns
The converted char_type
Implements std::__ctype_abstract_base< _CharT >.
Referenced by std::ctype< char >::widen().
template<typename _CharT > virtual const char* std::ctype< _CharT
>::do_widen (const char * __lo, const char * __hi, char_type * __to)
const [protected], [virtual], [inherited]
Widen char array. This function converts each char in the input to
char_type using the simplest reasonable transformation.
do_widen() is a hook for a derived facet to change the behavior of
widening. do_widen() must always return the same result for the same
input.
Note: this is not what you want for codepage conversions. See codecvt
for that.
Parameters
__lo Pointer to start range.
__hi Pointer to end of range.
__to Pointer to the destination array.
Returns
__hi.
Implements std::__ctype_abstract_base< _CharT >.
template<typename _CharT > const char_type* std::__ctype_abstract_base<
_CharT >::is (const char_type * __lo, const char_type * __hi, mask *
__vec) const [inline], [inherited]
Return a mask array. This function finds the mask for each char_type in
the range [lo,hi) and successively writes it to vec. vec must have as
many elements as the char array. It does so by returning the value of
ctype<char_type>::do_is().
Parameters
__lo Pointer to start of range.
__hi Pointer to end of range.
__vec Pointer to an array of mask storage.
Returns
__hi.
References std::__ctype_abstract_base< _CharT >::do_is().
template<typename _CharT > bool std::__ctype_abstract_base< _CharT >::is
(mask __m, char_type __c) const [inline], [inherited]
Test char_type classification. This function finds a mask M for __c and
compares it to mask __m. It does so by returning the value of
ctype<char_type>::do_is().
Parameters
__c The char_type to compare the mask of.
__m The mask to compare against.
Returns
(M & __m) != 0.
References std::__ctype_abstract_base< _CharT >::do_is().
Referenced by std::time_get< _CharT, _InIter >::get().
template<typename _CharT > char std::__ctype_abstract_base< _CharT
>::narrow (char_type __c, char __dfault) const [inline], [inherited]
Narrow char_type to char. This function converts the char_type to char
using the simplest reasonable transformation. If the conversion fails,
dfault is returned instead. It does so by returning
ctype<char_type>::do_narrow(__c).
Note: this is not what you want for codepage conversions. See codecvt
for that.
Parameters
__c The char_type to convert.
__dfault Char to return if conversion fails.
Returns
The converted char.
References std::__ctype_abstract_base< _CharT >::do_narrow().
Referenced by std::time_get< _CharT, _InIter >::get(), and
std::time_put< _CharT, _OutIter >::put().
template<typename _CharT > const char_type* std::__ctype_abstract_base<
_CharT >::narrow (const char_type * __lo, const char_type * __hi, char
__dfault, char * __to) const [inline], [inherited]
Narrow array to char array. This function converts each char_type in
the input to char using the simplest reasonable transformation and
writes the results to the destination array. For any char_type in the
input that cannot be converted, dfault is used instead. It does so by
returning ctype<char_type>::do_narrow(__lo, __hi, __dfault, __to).
Note: this is not what you want for codepage conversions. See codecvt
for that.
Parameters
__lo Pointer to start of range.
__hi Pointer to end of range.
__dfault Char to use if conversion fails.
__to Pointer to the destination array.
Returns
__hi.
References std::__ctype_abstract_base< _CharT >::do_narrow().
template<typename _CharT > const char_type* std::__ctype_abstract_base<
_CharT >::scan_is (mask __m, const char_type * __lo, const char_type *
__hi) const [inline], [inherited]
Find char_type matching a mask. This function searches for and returns
the first char_type c in [lo,hi) for which is(m,c) is true. It does so
by returning ctype<char_type>::do_scan_is().
Parameters
__m The mask to compare against.
__lo Pointer to start of range.
__hi Pointer to end of range.
Returns
Pointer to matching char_type if found, else __hi.
References std::__ctype_abstract_base< _CharT >::do_scan_is().
template<typename _CharT > const char_type* std::__ctype_abstract_base<
_CharT >::scan_not (mask __m, const char_type * __lo, const char_type *
__hi) const [inline], [inherited]
Find char_type not matching a mask. This function searches for and
returns the first char_type c in [lo,hi) for which is(m,c) is false. It
does so by returning ctype<char_type>::do_scan_not().
Parameters
__m The mask to compare against.
__lo Pointer to first char in range.
__hi Pointer to end of range.
Returns
Pointer to non-matching char if found, else __hi.
References std::__ctype_abstract_base< _CharT >::do_scan_not().
template<typename _CharT > const char_type* std::__ctype_abstract_base<
_CharT >::tolower (char_type * __lo, const char_type * __hi) const
[inline], [inherited]
Convert array to lowercase. This function converts each char_type in
the range [__lo,__hi) to lowercase if possible. Other elements remain
untouched. It does so by returning ctype<char_type>:: do_tolower(__lo,
__hi).
Parameters
__lo Pointer to start of range.
__hi Pointer to end of range.
Returns
__hi.
References std::__ctype_abstract_base< _CharT >::do_tolower().
template<typename _CharT > char_type std::__ctype_abstract_base< _CharT
>::tolower (char_type __c) const [inline], [inherited]
Convert to lowercase. This function converts the argument to lowercase
if possible. If not possible (for example, '2'), returns the argument.
It does so by returning ctype<char_type>::do_tolower(c).
Parameters
__c The char_type to convert.
Returns
The lowercase char_type if convertible, else __c.
References std::__ctype_abstract_base< _CharT >::do_tolower().
Referenced by std::time_get< _CharT, _InIter >::get().
template<typename _CharT > const char_type* std::__ctype_abstract_base<
_CharT >::toupper (char_type * __lo, const char_type * __hi) const
[inline], [inherited]
Convert array to uppercase. This function converts each char_type in
the range [lo,hi) to uppercase if possible. Other elements remain
untouched. It does so by returning ctype<char_type>:: do_toupper(lo,
hi).
Parameters
__lo Pointer to start of range.
__hi Pointer to end of range.
Returns
__hi.
References std::__ctype_abstract_base< _CharT >::do_toupper().
template<typename _CharT > char_type std::__ctype_abstract_base< _CharT
>::toupper (char_type __c) const [inline], [inherited]
Convert to uppercase. This function converts the argument to uppercase
if possible. If not possible (for example, '2'), returns the argument.
It does so by returning ctype<char_type>::do_toupper().
Parameters
__c The char_type to convert.
Returns
The uppercase char_type if convertible, else __c.
References std::__ctype_abstract_base< _CharT >::do_toupper().
Referenced by std::time_get< _CharT, _InIter >::get().
template<typename _CharT > char_type std::__ctype_abstract_base< _CharT
>::widen (char __c) const [inline], [inherited]
Widen char to char_type. This function converts the char argument to
char_type using the simplest reasonable transformation. It does so by
returning ctype<char_type>::do_widen(c).
Note: this is not what you want for codepage conversions. See codecvt
for that.
Parameters
__c The char to convert.
Returns
The converted char_type.
References std::__ctype_abstract_base< _CharT >::do_widen().
Referenced by std::money_get< _CharT, _InIter >::do_get(),
std::time_get< _CharT, _InIter >::do_get(), std::money_put< _CharT,
_OutIter >::do_put(), and std::time_put< _CharT, _OutIter >::do_put().
template<typename _CharT > const char* std::__ctype_abstract_base< _CharT
>::widen (const char * __lo, const char * __hi, char_type * __to) const
[inline], [inherited]
Widen array to char_type. This function converts each char in the input
to char_type using the simplest reasonable transformation. It does so
by returning ctype<char_type>::do_widen(c).
Note: this is not what you want for codepage conversions. See codecvt
for that.
Parameters
__lo Pointer to start of range.
__hi Pointer to end of range.
__to Pointer to the destination array.
Returns
__hi.
References std::__ctype_abstract_base< _CharT >::do_widen().
Member Data Documentation
template<typename _CharT > locale::id std::ctype< _CharT >::id [static],
[inherited]
The facet id for ctype<char_type>
Author
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