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Diffstat (limited to 'misc/uClibc++/include/cxx/streambuf')
-rw-r--r-- | misc/uClibc++/include/cxx/streambuf | 329 |
1 files changed, 329 insertions, 0 deletions
diff --git a/misc/uClibc++/include/cxx/streambuf b/misc/uClibc++/include/cxx/streambuf new file mode 100644 index 000000000..0daa388f0 --- /dev/null +++ b/misc/uClibc++/include/cxx/streambuf @@ -0,0 +1,329 @@ +/* Copyright (C) 2004 Garrett A. Kajmowicz + + This file is part of the uClibc++ Library. + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with this library; if not, write to the Free Software + Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA +*/ + +#include <basic_definitions> +#include <locale> +#include <string> +#include <iosfwd> + +#ifndef HEADER_STD_STREAMBUF +#define HEADER_STD_STREAMBUF 1 + +#include <ios> + +#pragma GCC visibility push(default) + +namespace std{ + + template <class charT, class traits> class _UCXXEXPORT basic_streambuf{ + public: +#ifdef __UCLIBCXX_SUPPORT_CDIR__ + friend ios_base::Init::Init(); +#endif + // Types: + typedef charT char_type; + typedef typename traits::int_type int_type; + typedef typename traits::pos_type pos_type; + typedef typename traits::off_type off_type; + typedef traits traits_type; + + virtual ~basic_streambuf(); + + locale pubimbue(const locale &loc); + + locale getloc() const{ + return myLocale; + } + + basic_streambuf<char_type,traits>* pubsetbuf(char_type* s, streamsize n){ + return setbuf(s,n); + } + pos_type pubseekoff(off_type off, + typename ios_base::seekdir way, + ios_base::openmode which = ios_base::in | + ios_base::out + ) + { + return seekoff(off,way,which); + } + pos_type pubseekpos(pos_type sp, ios_base::openmode which = ios_base::in | ios_base::out){ + return seekpos(sp,which); + } + int pubsync(){ + return sync(); + } + + streamsize in_avail(); + + int_type snextc(); + + int_type sbumpc(); + + int_type sgetc(); + + streamsize sgetn(char_type* s, streamsize n){ + return xsgetn(s,n); + } + + int_type sputbackc(char_type c); + + int_type sungetc(); + + int_type sputc(char_type c); + + streamsize sputn(const char_type* s, streamsize n){ + if(openedFor & ios_base::app){ + seekoff(0, ios_base::end, ios_base::out); + } + return xsputn(s, n); + } + + protected: + locale myLocale; + //Pointers for the "get" buffers + charT * mgbeg; + charT * mgnext; + charT * mgend; + + //Pointers for the "put" buffers + charT * mpbeg; + charT * mpnext; + charT * mpend; + + //In the event of null buffers Lets us know what the buffer is opened for + ios_base::openmode openedFor; + + basic_streambuf(); + + basic_streambuf(const basic_streambuf<char, char_traits<char> > &) + : myLocale(), + mgbeg(0), mgnext(0), mgend(0), mpbeg(0), mpnext(0), mpend(0), + openedFor(0) + { } + basic_streambuf<char, char_traits<char> > & operator=(const basic_streambuf<char, char_traits<char> > &){ + return *this; + } + + char_type* eback() const{ + return mgbeg; + } + char_type* gptr() const{ + return mgnext; + } + char_type* egptr() const{ + return mgend; + } + void gbump(int n){ + mgnext+=n; + } + void setg(char_type* gbeg, char_type* gnext, char_type* gend){ + mgbeg = gbeg; + mgnext = gnext; + mgend = gend; + } + + char_type* pbase() const{ + return mpbeg; + } + char_type* pptr() const{ + return mpnext; + } + char_type* epptr() const{ + return mpend; + } + void pbump(int n){ + mpnext+=n; + } + void setp(char_type* pbeg, char_type* pend){ + mpbeg = pbeg; + mpnext = pbeg; + mpend = pend; + } + + virtual void imbue(const locale &loc){ + myLocale = loc; + } + + //Virtual functions which we will not implement + + virtual basic_streambuf<char_type,traits>* setbuf(char_type* , streamsize){ + return 0; + } + virtual pos_type seekoff(off_type , ios_base::seekdir, + ios_base::openmode = ios_base::in | ios_base::out) + { + return 0; + } + virtual pos_type seekpos(pos_type , ios_base::openmode = ios_base::in | ios_base::out){ + return 0; + } + virtual int sync(){ + return 0; + } + + virtual int showmanyc(){ + return 0; + } + virtual streamsize xsgetn(char_type* , streamsize ){ + return 0; + } + virtual int_type underflow(){ + return traits_type::eof(); + } + virtual int_type uflow(){ + int_type ret = underflow(); + if (!traits_type::eq_int_type(ret, traits_type::eof())) + gbump(1); + return ret; + } + + virtual int_type pbackfail(int_type c = traits::eof()){ + return c; + } + virtual streamsize xsputn(const char_type* c, streamsize n){ + //This function is designed to be replaced by subclasses + for(streamsize i = 0; i< n; ++i){ + if(sputc(c[i]) == traits::eof()){ + return i; + } + } + return n; + } + virtual int_type overflow (int_type c = traits::eof()){ + return c; + } + }; + + typedef basic_streambuf<char> streambuf; +#ifdef __UCLIBCXX_HAS_WCHAR__ + typedef basic_streambuf<wchar_t> wstreambuf; +#endif + + +//Definitions put below to allow for easy expansion of code + + template <class C, class T> basic_streambuf<C, T>::~basic_streambuf(){ } + + template <class C, class T> locale basic_streambuf<C, T>::pubimbue(const locale &loc){ + locale temp = myLocale; + myLocale = loc; + return temp; + } + + template <class C, class T> streamsize basic_streambuf<C, T>::in_avail(){ + if(mgend !=0 && mgnext !=0){ + return mgend - mgnext; + } + return showmanyc(); + } + + template <class C, class T> typename basic_streambuf<C, T>::int_type basic_streambuf<C, T>::sbumpc(){ + if(mgbeg == 0 || mgnext == mgend){ + return uflow(); + } + int_type retval = T::to_int_type(*gptr()); + gbump(1); + return retval; + } + + template <class C, class T> typename basic_streambuf<C, T>::int_type basic_streambuf<C, T>::snextc(){ + if(sbumpc() == T::eof() ){ + return T::eof() ; + } + return sgetc(); + } + + template <class C, class T> typename basic_streambuf<C, T>::int_type basic_streambuf<C, T>::sgetc(){ + if(mgbeg == 0 || mgnext == mgend){ + return underflow(); + } + return T::to_int_type(*gptr()); + } + + template <class C, class T> typename basic_streambuf<C, T>::int_type basic_streambuf<C, T>::sputbackc(char_type c){ + if(mgbeg == 0 || mgnext == mgbeg || !T::eq(c, gptr()[-1] )){ + return pbackfail(T::to_int_type(c)); + } + gbump(-1); + return T::to_int_type(*gptr()); + } + + template <class C, class T> typename basic_streambuf<C, T>::int_type basic_streambuf<C, T>::sungetc(){ + if(mgbeg == 0 || mgnext == mgbeg){ + return ios_base::failbit; + } + gbump(-1); + return T::to_int_type(*gptr()); + } + + template <class C, class T> typename basic_streambuf<C, T>::int_type basic_streambuf<C, T>::sputc(char_type c){ + if(openedFor & ios_base::app){ + seekoff(0, ios_base::end, ios_base::out); + } + if(mpnext < mpend){ + *mpnext = c; + ++mpnext; + }else{ + return overflow( T::to_int_type(c) ); + } + return T::to_int_type(c); + } + + template <class C, class T> basic_streambuf<C, T>::basic_streambuf() + : myLocale(), + mgbeg(0), mgnext(0), mgend(0), mpbeg(0), mpnext(0), mpend(0), + openedFor(0) + { } + + + + + + +#ifdef __UCLIBCXX_EXPAND_STREAMBUF_CHAR__ +#ifndef __UCLIBCXX_COMPILE_STREAMBUF__ + +#ifdef __UCLIBCXX_EXPAND_CONSTRUCTORS_DESTRUCTORS__ + + template <> _UCXXEXPORT streambuf::basic_streambuf(); + template <> _UCXXEXPORT streambuf::~basic_streambuf(); + +#endif //__UCLIBCXX_EXPAND_CONSTRUCTORS_DESTRUCTORS__ + + template <> _UCXXEXPORT locale streambuf::pubimbue(const locale &loc); + template <> _UCXXEXPORT streamsize streambuf::in_avail(); + template <> _UCXXEXPORT streambuf::int_type streambuf::sbumpc(); + template <> _UCXXEXPORT streambuf::int_type streambuf::snextc(); + template <> _UCXXEXPORT streambuf::int_type streambuf::sgetc(); + template <> _UCXXEXPORT streambuf::int_type streambuf::sputbackc(char_type c); + template <> _UCXXEXPORT streambuf::int_type streambuf::sungetc(); + template <> _UCXXEXPORT streambuf::int_type streambuf::sputc(char_type c); + +#endif +#endif + + + + + +} + +#pragma GCC visibility pop + +#endif |