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codecvt.h (__iconv_adaptor): New adaptor function...

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2000-11-10  Phil Edwards  <pme@sources.redhat.com>

	* include/bits/codecvt.h (__iconv_adaptor):  New adaptor function,
	  courtesy of Alexandre Oliva, to handle const/non-const signatures.
	  (codecvt::do_out):  Use.
	  (codecvt::do_in):  And here.

From-SVN: r37379
This commit is contained in:
Phil Edwards 2000-11-11 00:37:45 +00:00
parent d2ea6600c8
commit 585ddf9c47
2 changed files with 36 additions and 11 deletions
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7
libstdc++-v3/ChangeLog
View File

@ -1,3 +1,10 @@
2000-11-10 Phil Edwards <pme@sources.redhat.com>
* include/bits/codecvt.h (__iconv_adaptor): New adaptor function,
courtesy of Alexandre Oliva, to handle const/non-const signatures.
(codecvt::do_out): Use.
(codecvt::do_in): And here.
2000-11-10 Gabriel Dos Reis <gdr@codesourcery.com>
* include/bits/cpp_type_traits.h: Fix typos. Adjust formatting.

40
libstdc++-v3/include/bits/codecvt.h
View File

@ -372,6 +372,19 @@ namespace std
locale::id
codecvt<_InternT, _ExternT, __enc_traits>::id;
// This adaptor works around the signature problems of the second
// argument to iconv(): SUSv2 and others use 'const char**', but glibc 2.2
// uses 'char**', which is what the standard is (apparently) due to use
// in the future. Using this adaptor, g++ will do the work for us.
template<typename _T>
inline size_t
__iconv_adaptor(size_t(*iconv_func)(iconv_t, _T, size_t *, char**, size_t*),
iconv_t cd, char **inbuf, size_t *inbytesleft,
char **outbuf, size_t *outbytesleft)
{
return iconv_func (cd, (_T)inbuf, inbytesleft, outbuf, outbytesleft);
}
template<typename _InternT, typename _ExternT>
codecvt_base::result
codecvt<_InternT, _ExternT, __enc_traits>::
@ -393,7 +406,7 @@ namespace std
// Argument list for iconv specifies a byte sequence. Thus,
// all to/from arrays must be brutally casted to char*.
char* __cto = reinterpret_cast<char*>(__to);
const char* __cfrom;
char* __cfrom;
size_t __conv;
// Some encodings need a byte order marker as the first item
@ -408,14 +421,16 @@ namespace std
intern_type __cfixed[__size + 1];
__cfixed[0] = static_cast<intern_type>(__int_bom);
char_traits<intern_type>::copy(__cfixed + 1, __from, __size);
__cfrom = reinterpret_cast<const char*>(__cfixed);
__conv = iconv(*__desc, &__cfrom, &__flen, &__cto, &__tlen);
__cfrom = reinterpret_cast<char*>(__cfixed);
__conv = __iconv_adaptor(iconv, *__desc, &__cfrom,
&__flen, &__cto, &__tlen);
}
else
{
intern_type* __cfixed = const_cast<intern_type*>(__from);
__cfrom = reinterpret_cast<const char*>(__cfixed);
__conv = iconv(*__desc, &__cfrom, &__flen, &__cto, &__tlen);
__cfrom = reinterpret_cast<char*>(__cfixed);
__conv = __iconv_adaptor(iconv, *__desc, &__cfrom,
&__flen, &__cto, &__tlen);
}
if (__conv != size_t(-1))
@ -456,7 +471,8 @@ namespace std
// Argument list for iconv specifies a byte sequence. Thus,
// all to/from arrays must be brutally casted to char*.
char* __cto = reinterpret_cast<char*>(__to);
size_t __conv = iconv(*__desc, NULL, NULL, &__cto, &__tlen);
size_t __conv = __iconv_adaptor(iconv,*__desc, NULL, NULL,
&__cto, &__tlen);
if (__conv != size_t(-1))
{
@ -495,7 +511,7 @@ namespace std
// Argument list for iconv specifies a byte sequence. Thus,
// all to/from arrays must be brutally casted to char*.
char* __cto = reinterpret_cast<char*>(__to);
const char* __cfrom;
char* __cfrom;
size_t __conv;
// Some encodings need a byte order marker as the first item
@ -510,14 +526,16 @@ namespace std
extern_type __cfixed[__size + 1];
__cfixed[0] = static_cast<extern_type>(__ext_bom);
char_traits<extern_type>::copy(__cfixed + 1, __from, __size);
__cfrom = reinterpret_cast<const char*>(__cfixed);
__conv = iconv(*__desc, &__cfrom, &__flen, &__cto, &__tlen);
__cfrom = reinterpret_cast<char*>(__cfixed);
__conv = __iconv_adaptor(iconv, *__desc, &__cfrom,
&__flen, &__cto, &__tlen);
}
else
{
extern_type* __cfixed = const_cast<extern_type*>(__from);
__cfrom = reinterpret_cast<const char*>(__cfixed);
__conv = iconv(*__desc, &__cfrom, &__flen, &__cto, &__tlen);
__cfrom = reinterpret_cast<char*>(__cfixed);
__conv = __iconv_adaptor(iconv, *__desc, &__cfrom,
&__flen, &__cto, &__tlen);
}