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-rw-r--r--contrib/libstdc++/sstream568
1 files changed, 343 insertions, 225 deletions
diff --git a/contrib/libstdc++/sstream b/contrib/libstdc++/sstream
index 714be717e507..45393b14761e 100644
--- a/contrib/libstdc++/sstream
+++ b/contrib/libstdc++/sstream
@@ -1,225 +1,343 @@
-/* This is part of libio/iostream, providing -*- C++ -*- input/output.
-Copyright (C) 2000 Free Software Foundation
-
-This file is part of the GNU IO Library. This library is free
-software; you can redistribute it and/or modify it under the
-terms of the GNU General Public License as published by the
-Free Software Foundation; either version 2, 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 General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with this library; see the file COPYING. If not, write to the Free
-Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
-
-As a special exception, if you link this library with files
-compiled with a GNU compiler to produce an executable, this does not cause
-the resulting executable to be covered by the GNU General Public License.
-This exception does not however invalidate any other reasons why
-the executable file might be covered by the GNU General Public License. */
-
-/* Written by Magnus Fromreide (magfr@lysator.liu.se). */
-
-#ifndef __SSTREAM__
-#define __SSTREAM__
-
-#include <string>
-#include <iostream.h>
-#include <streambuf.h>
-
-namespace std
-{
- class stringbuf : public streambuf
- {
- public:
- typedef char char_type;
- typedef int int_type;
- typedef streampos pos_type;
- typedef streamoff off_type;
-
- explicit stringbuf(int which=ios::in|ios::out) :
- streambuf(which), buf(), mode(static_cast<ios::open_mode>(which)),
- rpos(0), bufsize(1)
- { }
-
- explicit stringbuf(const std::string &s, int which=ios::in|ios::out) :
- streambuf(which), buf(s), mode(static_cast<ios::open_mode>(which)),
- bufsize(1)
- {
- if(mode & ios::in)
- {
- setg(&defbuf, &defbuf + bufsize, &defbuf + bufsize);
- }
- if(mode & ios::out)
- {
- setp(&defbuf, &defbuf + bufsize);
- }
- rpos = (mode & ios::ate ? s.size() : 0);
- }
-
- std::string str() const
- {
- const_cast<stringbuf*>(this)->sync(); // Sigh, really ugly hack
- return buf;
- };
-
- void str(const std::string& s)
- {
- buf = s;
- if(mode & ios::in)
- {
- gbump(egptr() - gptr());
- }
- if(mode & ios::out)
- {
- pbump(pbase() - pptr());
- }
- rpos = (mode & ios::ate ? s.size() : 0);
- }
-
- protected:
- inline virtual int sync();
- inline virtual int overflow(int = EOF);
- inline virtual int underflow();
- private:
- std::string buf;
- ios::open_mode mode;
- std::string::size_type rpos;
- streamsize bufsize;
- char defbuf;
- };
-
- class stringstreambase : virtual public ios {
- protected:
- stringbuf __my_sb;
- public:
- std::string str() const
- {
- return dynamic_cast<stringbuf*>(_strbuf)->str();
- }
- void str(const std::string& s)
- {
- clear();
- dynamic_cast<stringbuf*>(_strbuf)->str(s);
- }
-
- stringbuf* rdbuf()
- {
- return &__my_sb;
- }
- protected:
- stringstreambase(int which) :
- __my_sb(which)
- {
- init (&__my_sb);
- }
-
- stringstreambase(const std::string& s, int which) :
- __my_sb(s, which)
- {
- init (&__my_sb);
- }
- };
-
- class istringstream : public stringstreambase, public istream {
- public:
- istringstream(int which=ios::in) :
- stringstreambase(which)
- { }
-
- istringstream(const std::string& s, int which=ios::in) :
- stringstreambase(s, which)
- { }
- };
-
- class ostringstream : public stringstreambase, public ostream {
- public:
- ostringstream(int which=ios::out) :
- stringstreambase(which)
- { }
-
- ostringstream(const std::string& s, int which=ios::out) :
- stringstreambase(s, which)
- { }
- };
-
- class stringstream : public stringstreambase, public iostream {
- public:
- stringstream(int which=ios::in|ios::out) :
- stringstreambase(which)
- { }
-
- stringstream(const std::string &s, int which=ios::in|ios::out) :
- stringstreambase(s, which)
- { }
- };
-}
-
-inline int std::stringbuf::sync()
-{
- if((mode & ios::out) == 0)
- return EOF;
-
- streamsize n = pptr() - pbase();
- if(n)
- {
- buf.replace(rpos, std::string::npos, pbase(), n);
- if(buf.size() - rpos != n)
- return EOF;
- rpos += n;
- pbump(-n);
- gbump(egptr() - gptr());
- }
- return 0;
-}
-
-inline int std::stringbuf::overflow(int ch)
-{
- if((mode & ios::out) == 0)
- return EOF;
-
- streamsize n = pptr() - pbase();
-
- if(n && sync())
- return EOF;
-
- if(ch != EOF)
- {
- std::string::size_type oldSize = buf.size();
-
- buf.replace(rpos, std::string::npos, ch);
- if(buf.size() - oldSize != 1)
- return EOF;
- ++rpos;
- }
- return 0;
-}
-
-inline int std::stringbuf::underflow()
-{
- sync();
- if((mode & ios::in) == 0)
- {
- return EOF;
- }
- if(rpos >= buf.size())
- {
- return EOF;
- }
-
- std::string::size_type n = egptr() - eback();
- std::string::size_type s;
-
- s = buf.copy(eback(), n, rpos);
- pbump(pbase() - pptr());
- gbump(eback() - gptr());
- int res = (0377 & buf[rpos]);
- rpos += s;
- return res;
-}
-
-#endif /* not __STRSTREAM__ */
+/* This is part of libio/iostream, providing -*- C++ -*- input/output.
+Copyright (C) 2000 Free Software Foundation
+
+This file is part of the GNU IO Library. This library is free
+software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the
+Free Software Foundation; either version 2, 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 General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this library; see the file COPYING. If not, write to the Free
+Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+As a special exception, if you link this library with files
+compiled with a GNU compiler to produce an executable, this does not cause
+the resulting executable to be covered by the GNU General Public License.
+This exception does not however invalidate any other reasons why
+the executable file might be covered by the GNU General Public License. */
+
+/* Written by Magnus Fromreide (magfr@lysator.liu.se). */
+/* seekoff and ideas for overflow is largely borrowed from libstdc++-v3 */
+
+#ifndef __SSTREAM__
+#define __SSTREAM__
+
+#include <iostream.h>
+#include <streambuf.h>
+#include <string>
+
+namespace std
+{
+ class stringbuf : public streambuf
+ {
+ public:
+ typedef char char_type;
+ typedef int int_type;
+ typedef streampos pos_type;
+ typedef streamoff off_type;
+
+ explicit
+ stringbuf(int which=ios::in|ios::out)
+ : streambuf(), mode(static_cast<ios::open_mode>(which)),
+ stream(NULL), stream_len(0)
+ {
+ stringbuf_init();
+ }
+
+ explicit
+ stringbuf(const string &str, int which=ios::in|ios::out)
+ : streambuf(), mode(static_cast<ios::open_mode>(which)),
+ stream(NULL), stream_len(0)
+ {
+ if (mode & (ios::in|ios::out))
+ {
+ stream_len = str.size();
+ stream = new char_type[stream_len];
+ str.copy(stream, stream_len);
+ }
+ stringbuf_init();
+ }
+
+ virtual
+ ~stringbuf()
+ {
+ delete[] stream;
+ }
+
+ string
+ str() const
+ {
+ if (pbase() != 0)
+ return string(stream, pptr()-pbase());
+ else
+ return string();
+ }
+
+ void
+ str(const string& str)
+ {
+ delete[] stream;
+ stream_len = str.size();
+ stream = new char_type[stream_len];
+ str.copy(stream, stream_len);
+ stringbuf_init();
+ }
+
+ protected:
+ // The buffer is already in gptr, so if it ends then it is out of data.
+ virtual int
+ underflow()
+ {
+ return EOF;
+ }
+
+ virtual int
+ overflow(int c = EOF)
+ {
+ int res;
+ if (mode & ios::out)
+ {
+ if (c != EOF)
+ {
+ streamsize old_stream_len = stream_len;
+ stream_len += 1;
+ char_type* new_stream = new char_type[stream_len];
+ memcpy(new_stream, stream, old_stream_len);
+ delete[] stream;
+ stream = new_stream;
+ stringbuf_sync(gptr()-eback(), pptr()-pbase());
+ sputc(c);
+ res = c;
+ }
+ else
+ res = EOF;
+ }
+ else
+ res = 0;
+ return res;
+ }
+
+ virtual streambuf*
+ setbuf(char_type* s, streamsize n)
+ {
+ if (n != 0)
+ {
+ delete[] stream;
+ stream = new char_type[n];
+ memcpy(stream, s, n);
+ stream_len = n;
+ stringbuf_sync(0, 0);
+ }
+ return this;
+ }
+
+ virtual pos_type
+ seekoff(off_type off, ios::seek_dir way, int which = ios::in | ios::out)
+ {
+ pos_type ret = pos_type(off_type(-1));
+ bool testin = which & ios::in && mode & ios::in;
+ bool testout = which & ios::out && mode & ios::out;
+ bool testboth = testin && testout && way != ios::cur;
+
+ if (stream_len && ((testin != testout) || testboth))
+ {
+ char_type* beg = stream;
+ char_type* curi = NULL;
+ char_type* curo = NULL;
+ char_type* endi = NULL;
+ char_type* endo = NULL;
+
+ if (testin)
+ {
+ curi = gptr();
+ endi = egptr();
+ }
+ if (testout)
+ {
+ curo = pptr();
+ endo = epptr();
+ }
+
+ off_type newoffi = 0;
+ off_type newoffo = 0;
+ if (way == ios::beg)
+ {
+ newoffi = beg - curi;
+ newoffo = beg - curo;
+ }
+ else if (way == ios::end)
+ {
+ newoffi = endi - curi;
+ newoffo = endo - curo;
+ }
+
+ if (testin && newoffi + off + curi - beg >= 0 &&
+ endi - beg >= newoffi + off + curi - beg)
+ {
+ gbump(newoffi + off);
+ ret = pos_type(newoffi + off + curi);
+ }
+ if (testout && newoffo + off + curo - beg >= 0 &&
+ endo - beg >= newoffo + off + curo - beg)
+ {
+ pbump(newoffo + off);
+ ret = pos_type(newoffo + off + curo);
+ }
+ }
+ return ret;
+ }
+
+ virtual pos_type
+ seekpos(pos_type sp, int which = ios::in | ios::out)
+ {
+ pos_type ret = seekoff(sp, ios::beg, which);
+ return ret;
+ }
+
+ private:
+ void
+ stringbuf_sync(streamsize i, streamsize o)
+ {
+ if (mode & ios::in)
+ setg(stream, stream + i, stream + stream_len);
+ if (mode & ios::out)
+ {
+ setp(stream, stream + stream_len);
+ pbump(o);
+ }
+ }
+ void
+ stringbuf_init()
+ {
+ if (mode & ios::ate)
+ stringbuf_sync(0, stream_len);
+ else
+ stringbuf_sync(0, 0);
+ }
+
+ private:
+ ios::open_mode mode;
+ char_type* stream;
+ streamsize stream_len;
+ };
+
+ class istringstream : public istream {
+ public:
+ typedef char char_type;
+ typedef int int_type;
+ typedef streampos pos_type;
+ typedef streamoff off_type;
+
+ explicit
+ istringstream(int which=ios::in)
+ : istream(&sb), sb(which | ios::in)
+ { }
+
+ explicit
+ istringstream(const string& str, int which=ios::in)
+ : istream(&sb), sb(str, which | ios::in)
+ { }
+
+ stringbuf*
+ rdbuf() const
+ {
+ return const_cast<stringbuf*>(&sb);
+ }
+
+ string
+ str() const
+ {
+ return rdbuf()->str();
+ }
+ void
+ str(const string& s)
+ {
+ rdbuf()->str(s);
+ }
+ private:
+ stringbuf sb;
+ };
+
+ class ostringstream : public ostream {
+ public:
+ typedef char char_type;
+ typedef int int_type;
+ typedef streampos pos_type;
+ typedef streamoff off_type;
+
+ explicit
+ ostringstream(int which=ios::out)
+ : ostream(&sb), sb(which | ios::out)
+ { }
+
+ explicit
+ ostringstream(const string& str, int which=ios::out)
+ : ostream(&sb), sb(str, which | ios::out)
+ { }
+
+ stringbuf*
+ rdbuf() const
+ {
+ return const_cast<stringbuf*>(&sb);
+ }
+
+ string
+ str() const
+ {
+ return rdbuf()->str();
+ }
+
+ void str(const string& s)
+ {
+ rdbuf()->str(s);
+ }
+ private:
+ stringbuf sb;
+ };
+
+ class stringstream : public iostream {
+ public:
+ typedef char char_type;
+ typedef int int_type;
+ typedef streampos pos_type;
+ typedef streamoff off_type;
+
+ explicit
+ stringstream(int which=ios::out|ios::in)
+ : iostream(&sb), sb(which)
+ { }
+
+ explicit
+ stringstream(const string& str, int which=ios::out|ios::in)
+ : iostream(&sb), sb(str, which)
+ { }
+
+ stringbuf*
+ rdbuf() const
+ {
+ return const_cast<stringbuf*>(&sb);
+ }
+
+ string
+ str() const
+ {
+ return rdbuf()->str();
+ }
+
+ void
+ str(const string& s)
+ {
+ rdbuf()->str(s);
+ }
+ private:
+ stringbuf sb;
+ };
+};
+
+#endif /* not __STRSTREAM__ */