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1/*␉Copyright (C) 2004 Garrett A. Kajmowicz␊
2␊
3␉This file is part of the uClibc++ Library.␊
4␊
5␉This library is free software; you can redistribute it and/or␊
6␉modify it under the terms of the GNU Lesser General Public␊
7␉License as published by the Free Software Foundation; either␊
8␉version 2.1 of the License, or (at your option) any later version.␊
9␊
10␉This library is distributed in the hope that it will be useful,␊
11␉but WITHOUT ANY WARRANTY; without even the implied warranty of␊
12␉MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU␊
13␉Lesser General Public License for more details.␊
14␊
15␉You should have received a copy of the GNU Lesser General Public␊
16␉License along with this library; if not, write to the Free Software␊
17␉Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA␊
18*/␊
19␊
20#define __UCLIBCXX_COMPILE_FSTREAM__ 1␊
21␊
22#include <fstream>␊
23␊
24namespace std{␊
25␊
26#ifdef __UCLIBCXX_EXPAND_FSTREAM_CHAR__␊
27␊
28#ifdef __UCLIBCXX_EXPAND_CONSTRUCTORS_DESTRUCTORS__␊
29␊
30␉template _UCXXEXPORT filebuf::basic_filebuf();␊
31␉template _UCXXEXPORT filebuf::~basic_filebuf();␊
32␊
33#endif //__UCLIBCXX_EXPAND_CONSTRUCTORS_DESTRUCTORS__␊
34␊
35␉template _UCXXEXPORT filebuf::int_type filebuf::pbackfail(filebuf::int_type c);␊
36␉template _UCXXEXPORT filebuf * filebuf::open(const char* s, ios_base::openmode mode);␊
37␉template _UCXXEXPORT filebuf * filebuf::close();␊
38␉template _UCXXEXPORT filebuf::int_type filebuf::overflow(filebuf::int_type);␊
39␉template _UCXXEXPORT filebuf::int_type filebuf::underflow ();␊
40␉template _UCXXEXPORT streamsize filebuf::xsputn(const char* s, streamsize n);␊
41␊
42␉template _UCXXEXPORT basic_streambuf<char, char_traits<char> >*␊
43␉␉filebuf::setbuf(char * s, streamsize n);␊
44␊
45␊
46#ifdef __UCLIBCXX_EXPAND_CONSTRUCTORS_DESTRUCTORS__␊
47␊
48␉template _UCXXEXPORT basic_ofstream<char, char_traits<char> >::basic_ofstream();␊
49␉template _UCXXEXPORT basic_ofstream<char, char_traits<char> >::basic_ofstream(const char* s, ios_base::openmode mode);␊
50␉template _UCXXEXPORT basic_ofstream<char, char_traits<char> >::~basic_ofstream();␊
51␊
52␉template _UCXXEXPORT basic_ifstream<char, char_traits<char> >::basic_ifstream();␊
53␉template _UCXXEXPORT basic_ifstream<char, char_traits<char> >::basic_ifstream(const char* s, ios_base::openmode mode);␊
54␉template _UCXXEXPORT basic_ifstream<char, char_traits<char> >::~basic_ifstream();␊
55␊
56#endif //__UCLIBCXX_EXPAND_CONSTRUCTORS_DESTRUCTORS__␊
57␊
58␊
59#endif␊
60␊
61␊
62␊
63#ifdef __UCLIBCXX_HAS_WCHAR__␊
64␊
65template <> _UCXXEXPORT basic_filebuf<wchar_t, char_traits<wchar_t> >::int_type␊
66␉basic_filebuf<wchar_t, char_traits<wchar_t> >::overflow(int_type c)␊
67{␊
68␉typedef basic_streambuf<wchar_t, char_traits<wchar_t> > wstreambuf;␊
69␉typedef char_traits<wchar_t> wtraits;␊
70␊
71␉if(is_open() == false){␊
72␉␉//Can't do much␊
73␉␉return wtraits::eof();␊
74␉}␊
75␊
76␉mbstate_t ps = { 0 };␊
77␉char out_array[8];␊
78␉size_t out_size;␊
79␊
80␊
81␉if( wstreambuf::pbase() != 0 ){␊
82␊
83␉␉//Write all possible character from the existing array first␊
84␉␉size_t chars_written = 0;␊
85␉␉while(wstreambuf::pbase() && (wstreambuf::pbase() + chars_written !=wstreambuf::pptr()) ){␊
86␉␉␉out_size = wcrtomb(out_array, wstreambuf::pbase()[chars_written], &ps);␊
87␉␉␉if(out_size == (size_t)(-1) || fwrite(out_array, out_size, 1, fp) == 0){␊
88␉␉␉␉break;␊
89␉␉␉}␊
90␉␉␉++chars_written;␊
91␉␉}␊
92␊
93␉␉if( wstreambuf::pbase() + chars_written == wstreambuf::pptr() ){␊
94␉␉␉wstreambuf::pbump(-chars_written);␊
95␉␉}else{␊
96␉␉␉//Shuffle data back into order␊
97␉␉␉size_t chars_left = wstreambuf::pptr() - wstreambuf::pbase() - chars_written;␊
98␉␉␉for(size_t i = 0; i < chars_left; ++i){␊
99␉␉␉␉wstreambuf::pbase()[i] = (wstreambuf::pptr() - chars_written)[i];␊
100␉␉␉}␊
101␉␉␉return wtraits::eof();␊
102␉␉}␊
103␉}␊
104␊
105␉if( !wtraits::eq_int_type(c, wtraits::eof()) ){␊
106␉␉out_size = wcrtomb(out_array, c, &ps);␊
107␉␉if(out_size == (size_t)(-1) || fwrite(out_array, out_size, 1, fp) == 0){␊
108␉␉␉return wtraits::eof();␊
109␉␉}␊
110␉␉return c;␊
111␉}␊
112␊
113␉return wtraits::not_eof(c);␊
114}␊
115␊
116␊
117template <> _UCXXEXPORT basic_filebuf<wchar_t, char_traits<wchar_t> >::int_type␊
118 basic_filebuf<wchar_t, char_traits<wchar_t> >::underflow()␊
119{␊
120␉/*Some variables used internally:␊
121␉Buffer pointers:␊
122␊
123␉charT * mgbeg;␊
124␉charT * mgnext;␊
125␉charT * mgend;␊
126␊
127␉eback() returns mgbeg␊
128␉gptr() returns mgnext␊
129␉egptr() returns mgend␊
130␊
131␉gbump(int n) mgnext+=n␊
132␉*/␊
133␊
134␉typedef char_traits<wchar_t> traits;␊
135␉typedef basic_streambuf<wchar_t, traits> wstreambuf;␊
136␊
137␊
138␉if(wstreambuf::eback() == wstreambuf::gptr() && 0 != wstreambuf::eback()){␉//Buffer is full␊
139␉␉return traits::to_int_type(*wstreambuf::gptr());␊
140␉}␊
141␊
142 size_t in_size;␊
143␊
144␉wchar_t c = 0;␊
145␉wint_t wi = 0;␊
146␉in_size = 0;␊
147␊
148␉wi = fgetwc(fp);␊
149␉if(WEOF == wi){␊
150␉␉fprintf(stderr, "WEOF returned by fgetwc\n");␊
151␉␉return traits::eof();␊
152␉}␊
153␊
154␉c = traits::to_char_type(wi);␊
155␊
156␉if(wstreambuf::eback() == 0){␊
157␉␉return traits::to_int_type(c);␊
158␉}␊
159␊
160␉for(wchar_t * i = wstreambuf::gptr(); i < wstreambuf::egptr(); ++i){␊
161␉␉*(i-1) = *i;␊
162␉}␊
163␊
164␉*(wstreambuf::egptr()-1) = c;␊
165␉␊
166␉wstreambuf::mgnext -= 1;␊
167␊
168␉return traits::to_int_type(*wstreambuf::gptr());␊
169}␊
170␊
171#endif // __UCLIBCXX_HAS_WCHAR__␊
172␊
173␊
174}␊
175

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