The Tor Browser: build/stlport/src/strstream.cpp@129ffea94266 (annotated)

build/stlport/src/strstream.cpp@129ffea94266 (annotated)

build/stlport/src/strstream.cpp

Sat, 03 Jan 2015 20:18:00 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Sat, 03 Jan 2015 20:18:00 +0100
branch: TOR_BUG_3246
changeset 7: 129ffea94266
permissions: -rw-r--r--

Conditionally enable double key logic according to:
private browsing mode or privacy.thirdparty.isolate preference and
implement in GetCookieStringCommon and FindCookie where it counts...
With some reservations of how to convince FindCookie users to test
condition and pass a nullptr when disabling double key logic.

 /*
  * Copyright (c) 1999
  * Silicon Graphics Computer Systems, Inc.
  *
  * Copyright (c) 1999
  * Boris Fomitchev
  *
  * This material is provided "as is", with absolutely no warranty expressed
  * or implied. Any use is at your own risk.
  *
  * Permission to use or copy this software for any purpose is hereby granted
  * without fee, provided the above notices are retained on all copies.
  * Permission to modify the code and to distribute modified code is granted,
  * provided the above notices are retained, and a notice that the code was
  * modified is included with the above copyright notice.
  *
  */
 // Implementation of the classes in header <strstream>.
 // WARNING: The classes defined in <strstream> are DEPRECATED.  This
 // header is defined in section D.7.1 of the C++ standard, and it
 // MAY BE REMOVED in a future standard revision.  You should use the
 // header <sstream> instead.
 #include "stlport_prefix.h"
 #include <strstream>
 #include <algorithm>
 #include <limits>
 _STLP_BEGIN_NAMESPACE
 // strstreambuf constructor, destructor.
 strstreambuf::strstreambuf(streamsize initial_capacity)
    : _M_alloc_fun(0), _M_free_fun(0),
      _M_dynamic(true), _M_frozen(false), _M_constant(false) {
   size_t n = (sizeof(streamsize) > sizeof(size_t)) ? __STATIC_CAST(size_t, (min)(__STATIC_CAST(streamsize, (numeric_limits<size_t>::max)()),
                                                                                  (max)(initial_capacity, streamsize(16))))
                                                    : __STATIC_CAST(size_t, (max)(initial_capacity, streamsize(16)));
   char* buf = _M_alloc(n);
   if (buf) {
     setp(buf, buf + n);
     setg(buf, buf, buf);
   }
 }
 strstreambuf::strstreambuf(__alloc_fn alloc_f, __free_fn free_f)
   : _M_alloc_fun(alloc_f), _M_free_fun(free_f),
     _M_dynamic(true), _M_frozen(false), _M_constant(false) {
   size_t n = 16;
   char* buf = _M_alloc(n);
   if (buf) {
     setp(buf, buf + n);
     setg(buf, buf, buf);
   }
 }
 strstreambuf::strstreambuf(char* get, streamsize n, char* put)
   : _M_alloc_fun(0), _M_free_fun(0),
     _M_dynamic(false), _M_frozen(false), _M_constant(false) {
   _M_setup(get, put, n);
 }
 strstreambuf::strstreambuf(signed char* get, streamsize n, signed char* put)
   : _M_alloc_fun(0), _M_free_fun(0),
     _M_dynamic(false), _M_frozen(false), _M_constant(false) {
   _M_setup(__REINTERPRET_CAST(char*,get), __REINTERPRET_CAST(char*,put), n);
 }
 strstreambuf::strstreambuf(unsigned char* get, streamsize n,
                            unsigned char* put)
   : _M_alloc_fun(0), _M_free_fun(0),
     _M_dynamic(false), _M_frozen(false), _M_constant(false) {
   _M_setup(__REINTERPRET_CAST(char*,get), __REINTERPRET_CAST(char*,put), n);
 }
 strstreambuf::strstreambuf(const char* get, streamsize n)
   : _M_alloc_fun(0), _M_free_fun(0),
     _M_dynamic(false), _M_frozen(false), _M_constant(true) {
   _M_setup(__CONST_CAST(char*,get), 0, n);
 }
 strstreambuf::strstreambuf(const signed char* get, streamsize n)
   : _M_alloc_fun(0), _M_free_fun(0),
     _M_dynamic(false), _M_frozen(false), _M_constant(true) {
   _M_setup(__REINTERPRET_CAST(char*, __CONST_CAST(signed char*,get)), 0, n);
 }
 strstreambuf::strstreambuf(const unsigned char* get, streamsize n)
   : _M_alloc_fun(0), _M_free_fun(0),
     _M_dynamic(false), _M_frozen(false), _M_constant(true) {
   _M_setup(__REINTERPRET_CAST(char*, __CONST_CAST(unsigned char*,get)), 0, n);
 }
 strstreambuf::~strstreambuf() {
   if (_M_dynamic && !_M_frozen)
     _M_free(eback());
 }
 void strstreambuf::freeze(bool frozenflag) {
   if (_M_dynamic)
     _M_frozen = frozenflag;
 }
 char* strstreambuf::str() {
   freeze(true);
   return eback();
 }
 int strstreambuf::pcount() const {
   return int(pptr() ? pptr() - pbase() : 0);
 }
 strstreambuf::int_type strstreambuf::overflow(int_type c) {
   if (c == traits_type::eof())
     return traits_type::not_eof(c);
   // Try to expand the buffer.
   if (pptr() == epptr() && _M_dynamic && !_M_frozen && !_M_constant) {
     ptrdiff_t old_size = epptr() - pbase();
     ptrdiff_t new_size = (max)(2 * old_size, ptrdiff_t(1));
     char* buf = _M_alloc(new_size);
     if (buf) {
       memcpy(buf, pbase(), old_size);
       char* old_buffer = pbase();
       bool reposition_get = false;
       ptrdiff_t old_get_offset;
       if (gptr() != 0) {
         reposition_get = true;
         old_get_offset = gptr() - eback();
       }
       setp(buf, buf + new_size);
       pbump((int)old_size);
       if (reposition_get)
         setg(buf, buf + old_get_offset, buf + (max)(old_get_offset, old_size));
       _M_free(old_buffer);
     }
   }
   if (pptr() != epptr()) {
     *pptr() = traits_type::to_char_type(c);
     pbump(1);
     return c;
   }
   else
     return traits_type::eof();
 }
 strstreambuf::int_type strstreambuf::pbackfail(int_type c) {
   if (gptr() != eback()) {
     if (c == traits_type::eof()) {
       gbump(-1);
       return traits_type::not_eof(c);
     }
     else if (c == gptr()[-1]) {
       gbump(-1);
       return c;
     }
     else if (!_M_constant) {
       gbump(-1);
       *gptr() = traits_type::to_char_type(c);
       return c;
     }
   }
   return traits_type::eof();
 }
 strstreambuf::int_type strstreambuf::underflow() {
   if (gptr() == egptr() && pptr() && pptr() > egptr())
     setg(eback(), gptr(), pptr());
   if (gptr() != egptr())
     return (unsigned char) *gptr();
   else
     return _Traits::eof();
 }
 basic_streambuf<char, char_traits<char> >*
 strstreambuf::setbuf(char*, streamsize) {
   return this;
 }
 strstreambuf::pos_type
 strstreambuf::seekoff(off_type off,
                       ios_base::seekdir dir, ios_base::openmode mode) {
   bool do_get = false;
   bool do_put = false;
   if ((mode & (ios_base::in | ios_base::out)) ==
           (ios_base::in | ios_base::out) &&
       (dir == ios_base::beg || dir == ios_base::end))
     do_get = do_put = true;
   else if (mode & ios_base::in)
     do_get = true;
   else if (mode & ios_base::out)
     do_put = true;
   // !gptr() is here because, according to D.7.1 paragraph 4, the seekable
   // area is undefined if there is no get area.
   if ((!do_get && !do_put) || (do_put && !pptr()) || !gptr())
     return pos_type(off_type(-1));
   char* seeklow  = eback();
   char* seekhigh = epptr() ? epptr() : egptr();
   off_type newoff;
   switch(dir) {
   case ios_base::beg:
     newoff = 0;
     break;
   case ios_base::end:
     newoff = seekhigh - seeklow;
     break;
   case ios_base::cur:
     newoff = do_put ? pptr() - seeklow : gptr() - seeklow;
     break;
   default:
     return pos_type(off_type(-1));
   }
   off += newoff;
   if (off < 0 || off > seekhigh - seeklow)
     return pos_type(off_type(-1));
   if (do_put) {
     if (seeklow + __STATIC_CAST(ptrdiff_t, off) < pbase()) {
       setp(seeklow, epptr());
       pbump((int)off);
     }
     else {
       setp(pbase(), epptr());
       pbump((int)(off - (pbase() - seeklow)));
     }
   }
   if (do_get) {
     if (off <= egptr() - seeklow)
       setg(seeklow, seeklow + __STATIC_CAST(ptrdiff_t, off), egptr());
     else if (off <= pptr() - seeklow)
       setg(seeklow, seeklow + __STATIC_CAST(ptrdiff_t, off), pptr());
     else
       setg(seeklow, seeklow + __STATIC_CAST(ptrdiff_t, off), epptr());
   }
   return pos_type(newoff);
 }
 strstreambuf::pos_type
 strstreambuf::seekpos(pos_type pos, ios_base::openmode mode) {
   return seekoff(pos - pos_type(off_type(0)), ios_base::beg, mode);
 }
 char* strstreambuf::_M_alloc(size_t n) {
   if (_M_alloc_fun)
     return __STATIC_CAST(char*,_M_alloc_fun(n));
   else
     return new char[n];
 }
 void strstreambuf::_M_free(char* p) {
   if (p) {
     if (_M_free_fun)
       _M_free_fun(p);
     else
       delete[] p;
   }
 }
 void strstreambuf::_M_setup(char* get, char* put, streamsize n) {
   if (get) {
     size_t N = n > 0 ? size_t(n) : n == 0 ? strlen(get) : size_t(INT_MAX);
     if (put) {
       setg(get, get, get + N);
       setp(put, put + N);
     }
     else {
       setg(get, get, get + N);
     }
   }
 }
 //----------------------------------------------------------------------
 // Class istrstream
 istrstream::istrstream(char* s)
   : basic_istream<char, char_traits<char> >(0), _M_buf(s, 0) {
   this->init(&_M_buf);
 }
 istrstream::istrstream(const char* s)
   : basic_istream<char, char_traits<char> >(0), _M_buf(s, 0) {
   this->init(&_M_buf);
 }
 istrstream::istrstream(char* s, streamsize n)
   : basic_istream<char, char_traits<char> >(0), _M_buf(s, n) {
   this->init(&_M_buf);
 }
 istrstream::istrstream(const char* s, streamsize n)
   : basic_istream<char, char_traits<char> >(0), _M_buf(s, n) {
   this->init(&_M_buf);
 }
 istrstream::~istrstream() {}
 strstreambuf* istrstream::rdbuf() const {
   return __CONST_CAST(strstreambuf*,&_M_buf);
 }
 char* istrstream::str() { return _M_buf.str(); }
 //----------------------------------------------------------------------
 // Class ostrstream
 ostrstream::ostrstream()
   : basic_ostream<char, char_traits<char> >(0), _M_buf() {
   basic_ios<char, char_traits<char> >::init(&_M_buf);
 }
 ostrstream::ostrstream(char* s, int n, ios_base::openmode mode)
   : basic_ostream<char, char_traits<char> >(0),
     _M_buf(s, n, mode & ios_base::app ? s + strlen(s) : s) {
   basic_ios<char, char_traits<char> >::init(&_M_buf);
 }
 ostrstream::~ostrstream() {}
 strstreambuf* ostrstream::rdbuf() const {
   return __CONST_CAST(strstreambuf*,&_M_buf);
 }
 void ostrstream::freeze(bool freezeflag) {
   _M_buf.freeze(freezeflag);
 }
 char* ostrstream::str() {
   return _M_buf.str();
 }
 int ostrstream::pcount() const {
   return _M_buf.pcount();
 }
 //----------------------------------------------------------------------
 // Class strstream
 strstream::strstream()
   : basic_iostream<char, char_traits<char> >(0), _M_buf() {
   basic_ios<char, char_traits<char> >::init(&_M_buf);
 }
 strstream::strstream(char* s, int n, ios_base::openmode mode)
   : basic_iostream<char, char_traits<char> >(0),
     _M_buf(s, n, mode & ios_base::app ? s + strlen(s) : s) {
   basic_ios<char, char_traits<char> >::init(&_M_buf);
 }
 strstream::~strstream() {}
 strstreambuf* strstream::rdbuf() const {
   return __CONST_CAST(strstreambuf*,&_M_buf);
 }
 void strstream::freeze(bool freezeflag) {
   _M_buf.freeze(freezeflag);
 }
 int strstream::pcount() const {
   return _M_buf.pcount();
 }
 char* strstream::str() {
   return _M_buf.str();
 }
 _STLP_END_NAMESPACE
 // Local Variables:
 // mode:C++
 // End:

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build/stlport/src/strstream.cpp@129ffea94266 (annotated)

build/stlport/src/strstream.cpp