/elec/propeller-clock

To get this branch, use:
bzr branch http://bzr.ed.am/elec/propeller-clock
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
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