The Tor Browser: comparison build/stlport/src/strstream.cpp

--1:000000000000
+:240012b423ae
+/*
+* 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:

The Tor Browser / file comparison

comparison: build/stlport/src/strstream.cpp

build/stlport/src/strstream.cpp