Skip to content

R
riscv-gcc-1
Commit c55d0e0d by Magnus Fromreide Committed by Jason Merrill
Options

* sstream: Backport libstdc++-V3 sstream to V2. 

From-SVN: r38000
parent c00996a3
Showing with 347 additions and 225 deletions
libstdc++/ChangeLog
2000-11-24 Magnus Fromreide <magfr@lysator.liu.se>
* sstream: Backport libstdc++-V3 sstream to V2.
2000-10-23 Gabriel Dos Reis <gdr@codesourcery.com> 2000-10-23 Gabriel Dos Reis <gdr@codesourcery.com>
* std/std_valarray.h (valarray::valarray): Use __valarray_copy, * std/std_valarray.h (valarray::valarray): Use __valarray_copy,
......
libstdc++/sstream
/* This is part of libio/iostream, providing -*- C++ -*- input/output. /* This is part of libio/iostream, providing -*- C++ -*- input/output.
Copyright (C) 2000 Free Software Foundation Copyright (C) 2000 Free Software Foundation
This file is part of the GNU IO Library. This library is free This file is part of the GNU IO Library. This library is free
software; you can redistribute it and/or modify it under the software; you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the terms of the GNU General Public License as published by the
Free Software Foundation; either version 2, or (at your option) Free Software Foundation; either version 2, or (at your option)
any later version. any later version.
This library is distributed in the hope that it will be useful, This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details. GNU General Public License for more details.
You should have received a copy of the GNU General Public License 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 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. Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
As a special exception, if you link this library with files As a special exception, if you link this library with files
compiled with a GNU compiler to produce an executable, this does not cause 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. the resulting executable to be covered by the GNU General Public License.
This exception does not however invalidate any other reasons why This exception does not however invalidate any other reasons why
the executable file might be covered by the GNU General Public License. */ the executable file might be covered by the GNU General Public License. */
/* Written by Magnus Fromreide (magfr@lysator.liu.se). */ /* Written by Magnus Fromreide (magfr@lysator.liu.se). */
/* seekoff and ideas for overflow is largely borrowed from libstdc++-v3 */
#ifndef __SSTREAM__
#define __SSTREAM__ #ifndef __SSTREAM__
#define __SSTREAM__
#include <string>
#include <iostream.h> #include <iostream.h>
#include <streambuf.h> #include <streambuf.h>
#include <string>
namespace std
{ namespace std
class stringbuf : public streambuf {
{ class stringbuf : public streambuf
public: {
typedef char char_type; public:
typedef int int_type; typedef char char_type;
typedef streampos pos_type; typedef int int_type;
typedef streamoff off_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)), explicit
rpos(0), bufsize(1) stringbuf(int which=ios::in|ios::out)
{ } : streambuf(), mode(static_cast<ios::open_mode>(which)),
stream(NULL), stream_len(0)
explicit stringbuf(const std::string &s, int which=ios::in|ios::out) : {
streambuf(which), buf(s), mode(static_cast<ios::open_mode>(which)), stringbuf_init();
bufsize(1) }
{
if(mode & ios::in) explicit
{ stringbuf(const string &str, int which=ios::in|ios::out)
setg(&defbuf, &defbuf + bufsize, &defbuf + bufsize); : streambuf(), mode(static_cast<ios::open_mode>(which)),
} stream(NULL), stream_len(0)
if(mode & ios::out) {
{ if (mode & (ios::in|ios::out))
setp(&defbuf, &defbuf + bufsize); {
} stream_len = str.size();
rpos = (mode & ios::ate ? s.size() : 0); stream = new char_type[stream_len];
} str.copy(stream, stream_len);
}
std::string str() const stringbuf_init();
{ }
const_cast<stringbuf*>(this)->sync(); // Sigh, really ugly hack
return buf; virtual
}; ~stringbuf()
{
void str(const std::string& s) delete[] stream;
{ }
buf = s;
if(mode & ios::in) string
{ str() const
gbump(egptr() - gptr()); {
} if (pbase() != 0)
if(mode & ios::out) return string(stream, pptr()-pbase());
{ else
pbump(pbase() - pptr()); return string();
} }
rpos = (mode & ios::ate ? s.size() : 0);
} void
str(const string& str)
protected: {
inline virtual int sync(); delete[] stream;
inline virtual int overflow(int = EOF); stream_len = str.size();
inline virtual int underflow(); stream = new char_type[stream_len];
private: str.copy(stream, stream_len);
std::string buf; stringbuf_init();
ios::open_mode mode; }
std::string::size_type rpos;
streamsize bufsize; protected:
char defbuf; // The buffer is already in gptr, so if it ends then it is out of data.
}; virtual int
underflow()
class stringstreambase : virtual public ios { {
protected: return EOF;
stringbuf __my_sb; }
public:
std::string str() const virtual int
{ overflow(int c = EOF)
return dynamic_cast<stringbuf*>(_strbuf)->str(); {
} int res;
void str(const std::string& s) if (mode & ios::out)
{ {
clear(); if (c != EOF)
dynamic_cast<stringbuf*>(_strbuf)->str(s); {
} streamsize old_stream_len = stream_len;
stream_len += 1;
stringbuf* rdbuf() char_type* new_stream = new char_type[stream_len];
{ memcpy(new_stream, stream, old_stream_len);
return &__my_sb; delete[] stream;
} stream = new_stream;
protected: stringbuf_sync(gptr()-eback(), pptr()-pbase());
stringstreambase(int which) : sputc(c);
__my_sb(which) res = c;
{ }
init (&__my_sb); else
} res = EOF;
}
stringstreambase(const std::string& s, int which) : else
__my_sb(s, which) res = 0;
{ return res;
init (&__my_sb); }
}
}; virtual streambuf*
setbuf(char_type* s, streamsize n)
class istringstream : public stringstreambase, public istream { {
public: if (n != 0)
istringstream(int which=ios::in) : {
stringstreambase(which) delete[] stream;
{ } stream = new char_type[n];
memcpy(stream, s, n);
istringstream(const std::string& s, int which=ios::in) : stream_len = n;
stringstreambase(s, which) stringbuf_sync(0, 0);
{ } }
}; return this;
}
class ostringstream : public stringstreambase, public ostream {
public: virtual pos_type
ostringstream(int which=ios::out) : seekoff(off_type off, ios::seek_dir way, int which = ios::in | ios::out)
stringstreambase(which) {
{ } pos_type ret = pos_type(off_type(-1));
bool testin = which & ios::in && mode & ios::in;
ostringstream(const std::string& s, int which=ios::out) : bool testout = which & ios::out && mode & ios::out;
stringstreambase(s, which) bool testboth = testin && testout && way != ios::cur;
{ }
}; if (stream_len && ((testin != testout) || testboth))
{
class stringstream : public stringstreambase, public iostream { char_type* beg = stream;
public: char_type* curi = NULL;
stringstream(int which=ios::in|ios::out) : char_type* curo = NULL;
stringstreambase(which) char_type* endi = NULL;
{ } char_type* endo = NULL;
stringstream(const std::string &s, int which=ios::in|ios::out) : if (testin)
stringstreambase(s, which) {
{ } curi = gptr();
}; endi = egptr();
} }
if (testout)
inline int std::stringbuf::sync() {
{ curo = pptr();
if((mode & ios::out) == 0) endo = epptr();
return EOF; }
streamsize n = pptr() - pbase(); off_type newoffi = 0;
if(n) off_type newoffo = 0;
{ if (way == ios::beg)
buf.replace(rpos, std::string::npos, pbase(), n); {
if(buf.size() - rpos != n) newoffi = beg - curi;
return EOF; newoffo = beg - curo;
rpos += n; }
pbump(-n); else if (way == ios::end)
gbump(egptr() - gptr()); {
} newoffi = endi - curi;
return 0; newoffo = endo - curo;
} }
inline int std::stringbuf::overflow(int ch) if (testin && newoffi + off + curi - beg >= 0 &&
{ endi - beg >= newoffi + off + curi - beg)
if((mode & ios::out) == 0) {
return EOF; gbump(newoffi + off);
ret = pos_type(newoffi + off + curi);
streamsize n = pptr() - pbase(); }
if (testout && newoffo + off + curo - beg >= 0 &&
if(n && sync()) endo - beg >= newoffo + off + curo - beg)
return EOF; {
pbump(newoffo + off);
if(ch != EOF) ret = pos_type(newoffo + off + curo);
{ }
std::string::size_type oldSize = buf.size(); }
return ret;
buf.replace(rpos, std::string::npos, ch); }
if(buf.size() - oldSize != 1)
return EOF; virtual pos_type
++rpos; seekpos(pos_type sp, int which = ios::in | ios::out)
} {
return 0; pos_type ret = seekoff(sp, ios::beg, which);
} return ret;
}
inline int std::stringbuf::underflow()
{ private:
sync(); void
if((mode & ios::in) == 0) stringbuf_sync(streamsize i, streamsize o)
{ {
return EOF; if (mode & ios::in)
} setg(stream, stream + i, stream + stream_len);
if(rpos >= buf.size()) if (mode & ios::out)
{ {
return EOF; setp(stream, stream + stream_len);
} pbump(o);
}
std::string::size_type n = egptr() - eback(); }
std::string::size_type s; void
stringbuf_init()
s = buf.copy(eback(), n, rpos); {
pbump(pbase() - pptr()); if (mode & ios::ate)
gbump(eback() - gptr()); stringbuf_sync(0, stream_len);
int res = (0377 & buf[rpos]); else
rpos += s; stringbuf_sync(0, 0);
return res; }
}
private:
#endif /* not __STRSTREAM__ */ 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__ */
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment