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2023-08-07 19:29:24 +08:00
commit 34d6c5d489
4832 changed files with 1389451 additions and 0 deletions
--- a/STLPORT/stlport/stl/_sstream.c
+++ b/STLPORT/stlport/stl/_sstream.c
@@ -0,0 +1,543 @@
+/*
+ * 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.
+ *
+ */ 
+
+#ifndef _STLP_SSTREAM_C
+#define _STLP_SSTREAM_C
+
+#ifndef _STLP_SSTREAM_H
+# include <stl/_sstream.h>
+#endif
+
+# if defined (_STLP_EXPOSE_STREAM_IMPLEMENTATION)
+
+# if defined ( _STLP_NESTED_TYPE_PARAM_BUG )
+// no wint_t is supported for this mode
+# define __BSB_int_type__ int
+# define __BSB_pos_type__ streampos
+# else
+# define __BSB_int_type__ _STLP_TYPENAME_ON_RETURN_TYPE basic_stringbuf<_CharT, _Traits, _Alloc>::int_type
+# define __BSB_pos_type__ _STLP_TYPENAME_ON_RETURN_TYPE basic_stringbuf<_CharT, _Traits, _Alloc>::pos_type
+# endif
+
+_STLP_BEGIN_NAMESPACE
+
+//----------------------------------------------------------------------
+// Non-inline stringbuf member functions.
+
+// Constructors.  Note that the base class constructor sets all of the
+// get and area pointers to null.
+
+template <class _CharT, class _Traits, class _Alloc>
+basic_stringbuf<_CharT, _Traits, _Alloc>
+  ::basic_stringbuf(ios_base::openmode __mode)
+    : basic_streambuf<_CharT, _Traits>(), _M_mode(__mode), _M_str()
+{}
+
+template <class _CharT, class _Traits, class _Alloc>
+basic_stringbuf<_CharT, _Traits, _Alloc>
+  ::basic_stringbuf(const basic_string<_CharT, _Traits, _Alloc>& __s, ios_base::openmode __mode)
+    : basic_streambuf<_CharT, _Traits>(), _M_mode(__mode), _M_str(__s)
+{
+  _M_set_ptrs();
+}
+
+template <class _CharT, class _Traits, class _Alloc>
+basic_stringbuf<_CharT, _Traits, _Alloc>::~basic_stringbuf()
+{}
+
+// Set the underlying string to a new value.
+template <class _CharT, class _Traits, class _Alloc>
+void 
+basic_stringbuf<_CharT, _Traits, _Alloc>::str(const basic_string<_CharT, _Traits, _Alloc>& __s)
+{
+  _M_str = __s;
+  _M_set_ptrs();
+}
+
+template <class _CharT, class _Traits, class _Alloc>
+void 
+basic_stringbuf<_CharT, _Traits, _Alloc>::_M_set_ptrs() {
+  _CharT* __data_ptr = __CONST_CAST(_CharT*,_M_str.data());
+  _CharT* __data_end = __data_ptr + _M_str.size();
+  // The initial read position is the beginning of the string.
+  if (_M_mode & ios_base::in)
+    this->setg(__data_ptr, __data_ptr, __data_end);
+  
+  // The initial write position is the beginning of the string.
+  if (_M_mode & ios_base::out) {
+    if (_M_mode & ios_base::app)
+      this->setp(__data_end, __data_end);
+    else
+      this->setp(__data_ptr, __data_end);
+  }
+}
+
+// Precondition: gptr() >= egptr().  Returns a character, if one is available.
+template <class _CharT, class _Traits, class _Alloc>
+__BSB_int_type__
+basic_stringbuf<_CharT, _Traits, _Alloc>::underflow()
+{
+  return this->gptr() != this->egptr()
+    ? _Traits::to_int_type(*this->gptr())
+    : _Traits::eof();
+}
+
+// Precondition: gptr() >= egptr().
+template <class _CharT, class _Traits, class _Alloc>
+__BSB_int_type__
+basic_stringbuf<_CharT, _Traits, _Alloc>::uflow()
+{
+  if (this->gptr() != this->egptr()) {
+    int_type __c = _Traits::to_int_type(*this->gptr());
+    this->gbump(1);
+    return __c;
+  }
+  else
+    return _Traits::eof();
+}
+
+template <class _CharT, class _Traits, class _Alloc>
+__BSB_int_type__
+basic_stringbuf<_CharT, _Traits, _Alloc>::pbackfail(int_type __c)
+{
+  if (this->gptr() != this->eback()) {
+    if (!_Traits::eq_int_type(__c, _Traits::eof())) {
+      if (_Traits::eq(_Traits::to_char_type(__c), this->gptr()[-1])) {
+        this->gbump(-1);
+        return __c;
+      }
+      else if (_M_mode & ios_base::out) {
+        this->gbump(-1);
+        *this->gptr() = __c;
+        return __c;
+      }
+      else
+        return _Traits::eof();
+    }
+    else {
+      this->gbump(-1);
+      return _Traits::not_eof(__c);
+    }
+  }
+  else
+    return _Traits::eof();
+}
+
+template <class _CharT, class _Traits, class _Alloc>
+__BSB_int_type__
+basic_stringbuf<_CharT, _Traits, _Alloc>::overflow(int_type __c)
+{
+  // fbp : reverse order of "ifs" to pass Dietmar's test.
+  // Apparently, standard allows overflow with eof even for read-only streams.
+  if (!_Traits::eq_int_type(__c, _Traits::eof())) {
+    if (_M_mode & ios_base::out) {
+      if (!(_M_mode & ios_base::in)) {
+        // It's a write-only streambuf, so we can use special append buffer.
+        if (this->pptr() == this->epptr())
+          this->_M_append_buffer();
+      
+        if (this->pptr() != this->epptr()) {
+          *this->pptr() = _Traits::to_char_type(__c);
+          this->pbump(1);
+          return __c;
+        }
+        else
+          return _Traits::eof();
+      }
+
+      else {
+        // We're not using a special append buffer, just the string itself.
+        if (this->pptr() == this->epptr()) {
+          ptrdiff_t __offset = this->gptr() - this->eback();
+          _M_str.push_back(_Traits::to_char_type(__c));
+
+	  _CharT* __data_ptr = __CONST_CAST(_CharT*,_M_str.data());
+	  size_t __data_size = _M_str.size();
+
+          this->setg(__data_ptr, __data_ptr + __offset, __data_ptr+__data_size);
+          this->setp(__data_ptr, __data_ptr + __data_size);
+          this->pbump((int)__data_size);
+          return __c;
+        }
+        else {
+          *this->pptr() = _Traits::to_char_type(__c);
+          this->pbump(1);
+          return __c;
+        }
+      }
+    }
+    else                          // Overflow always fails if it's read-only 
+      return _Traits::eof();
+  }
+  else                        // __c is EOF, so we don't have to do anything
+    return _Traits::not_eof(__c);
+}
+
+template <class _CharT, class _Traits, class _Alloc>
+streamsize 
+basic_stringbuf<_CharT, _Traits, _Alloc>::xsputn(const char_type* __s,
+                                                 streamsize __n)
+{
+  streamsize __nwritten = 0;
+
+  if ((_M_mode & ios_base::out) && __n > 0) {
+    // If the put pointer is somewhere in the middle of the string,
+    // then overwrite instead of append.
+    if (this->pbase() == _M_str.data() ) {
+      ptrdiff_t __avail = _M_str.data() + _M_str.size() - this->pptr();
+      if (__avail > __n) {
+        _Traits::copy(this->pptr(), __s, __n);
+        this->pbump((int)__n);
+        return __n;
+      }
+      else {
+        _Traits::copy(this->pptr(), __s, __avail);
+        __nwritten += __avail;
+        __n -= __avail;
+        __s += __avail;
+        this->setp(_M_Buf, _M_Buf + __STATIC_CAST(int,_S_BufSiz));
+      }
+    }
+
+    // At this point we know we're appending.
+    if (_M_mode & ios_base::in) {
+      ptrdiff_t __get_offset = this->gptr() - this->eback();
+      _M_str.append(__s, __s + __n);
+      
+      _CharT* __data_ptr = __CONST_CAST(_CharT*,_M_str.data());
+      size_t __data_size = _M_str.size();
+
+      this->setg(__data_ptr, __data_ptr + __get_offset, __data_ptr+__data_size);
+      this->setp(__data_ptr, __data_ptr + __data_size);
+      this->pbump((int)__data_size);
+    }
+    else {
+      _M_append_buffer();
+      _M_str.append(__s, __s + __n);
+    }
+
+    __nwritten += __n;
+  }
+
+  return __nwritten;
+}
+
+template <class _CharT, class _Traits, class _Alloc>
+streamsize 
+basic_stringbuf<_CharT, _Traits, _Alloc>::_M_xsputnc(char_type __c,
+                                                     streamsize __n)
+{
+  streamsize __nwritten = 0;
+
+  if ((_M_mode & ios_base::out) && __n > 0) {
+    // If the put pointer is somewhere in the middle of the string,
+    // then overwrite instead of append.
+    if (this->pbase() == _M_str.data()) {
+      ptrdiff_t __avail = _M_str.data() + _M_str.size() - this->pptr();
+      if (__avail > __n) {
+        _Traits::assign(this->pptr(), __n, __c);
+        this->pbump((int)__n);
+        return __n;
+      }
+      else {
+        _Traits::assign(this->pptr(), __avail, __c);
+        __nwritten += __avail;
+        __n -= __avail;
+        this->setp(_M_Buf, _M_Buf + __STATIC_CAST(int,_S_BufSiz));
+      }
+    }
+
+    // At this point we know we're appending.
+    if (this->_M_mode & ios_base::in) {
+      ptrdiff_t __get_offset = this->gptr() - this->eback();
+      _M_str.append(__n, __c);
+
+      _CharT* __data_ptr = __CONST_CAST(_CharT*,_M_str.data());
+      size_t __data_size = _M_str.size();
+
+      this->setg(__data_ptr, __data_ptr + __get_offset, __data_ptr+__data_size);
+      this->setp(__data_ptr, __data_ptr + __data_size);
+      this->pbump((int)__data_size);
+
+    }
+    else {
+      _M_append_buffer();
+      _M_str.append(__n, __c);      
+    }
+
+    __nwritten += __n;
+  }
+
+  return __nwritten;
+}
+
+// According to the C++ standard the effects of setbuf are implementation
+// defined, except that setbuf(0, 0) has no effect.  In this implementation,
+// setbuf(<anything>, n), for n > 0, calls reserve(n) on the underlying
+// string.
+template <class _CharT, class _Traits, class _Alloc>
+basic_streambuf<_CharT, _Traits>*
+basic_stringbuf<_CharT, _Traits, _Alloc>::setbuf(_CharT*, streamsize __n)
+{
+  if (__n > 0) {
+    bool __do_get_area = false;
+    bool __do_put_area = false;
+    ptrdiff_t __offg = 0;
+    ptrdiff_t __offp = 0;
+
+    if (this->pbase() == _M_str.data()) {
+      __do_put_area = true;
+      __offp = this->pptr() - this->pbase();
+    }
+
+    if (this->eback() == _M_str.data()) {
+      __do_get_area = true;
+      __offg = this->gptr() - this->eback();
+    }
+
+    if ((_M_mode & ios_base::out) && !(_M_mode & ios_base::in))
+      _M_append_buffer();
+
+    _M_str.reserve(__n);
+
+    _CharT* __data_ptr = __CONST_CAST(_CharT*,_M_str.data());
+    size_t __data_size = _M_str.size();
+
+    if (__do_get_area) {
+      this->setg(__data_ptr, __data_ptr + __offg, __data_ptr+__data_size);
+    }
+
+    if (__do_put_area) {
+      this->setp(__data_ptr, __data_ptr+__data_size);
+      this->pbump((int)__offp);
+    }
+  }
+
+  return this;
+}
+
+template <class _CharT, class _Traits, class _Alloc>
+__BSB_pos_type__
+basic_stringbuf<_CharT, _Traits, _Alloc>::seekoff(off_type __off, 
+            ios_base::seekdir __dir,
+            ios_base::openmode __mode)
+{
+  bool __in  = false;
+  bool __out = false;
+  
+  if ((__mode & (ios_base::in | ios_base::out)) == (ios_base::in | ios_base::out) ) {
+    if (__dir == ios_base::beg || __dir == ios_base::end)
+      __in = __out = true;
+  }
+  else if (__mode & ios_base::in)
+    __in = true;
+  else if (__mode & ios_base::out)
+    __out = true;
+
+  if (!__in && !__out)
+    return pos_type(off_type(-1));
+  else if ((__in  && (!(_M_mode & ios_base::in) || this->gptr() == 0)) ||
+           (__out && (!(_M_mode & ios_base::out) || this->pptr() == 0)))
+    return pos_type(off_type(-1));
+
+  if ((_M_mode & ios_base::out) && !(_M_mode & ios_base::in))
+    _M_append_buffer();
+
+  streamoff __newoff;
+  switch(__dir) {
+  case ios_base::beg:
+    __newoff = 0;
+    break;
+  case ios_base::end:
+    __newoff = _M_str.size();
+    break;
+  case ios_base::cur:
+    __newoff = __in ? this->gptr() - this->eback() 
+                    : this->pptr() - this->pbase();
+    break;
+  default:
+    return pos_type(off_type(-1));
+  }
+
+  __off += __newoff;
+
+  if (__in) {
+    ptrdiff_t __n = this->egptr() - this->eback();
+
+    if (__off < 0 || __off > __n)
+      return pos_type(off_type(-1));
+    else
+      this->setg(this->eback(), this->eback() + __off, this->eback() + __n);
+  }
+
+  if (__out) {
+    ptrdiff_t __n = this->epptr() - this->pbase();
+
+    if (__off < 0 || __off > __n)
+      return pos_type(off_type(-1));
+    else {
+      this->setp(this->pbase(), this->pbase() + __n);
+      this->pbump((int)__off);
+    }
+  }
+
+  return pos_type(__off);
+}
+
+template <class _CharT, class _Traits, class _Alloc>
+__BSB_pos_type__
+basic_stringbuf<_CharT, _Traits, _Alloc>
+  ::seekpos(pos_type __pos, ios_base::openmode __mode)
+{
+  bool __in  = (__mode & ios_base::in) != 0;
+  bool __out = (__mode & ios_base::out) != 0;
+
+  if ((__in  && (!(_M_mode & ios_base::in) || this->gptr() == 0)) ||
+      (__out && (!(_M_mode & ios_base::out) || this->pptr() == 0)))
+    return pos_type(off_type(-1));
+
+  const off_type __n = __pos - pos_type(off_type(0));
+  if ((_M_mode & ios_base::out) && !(_M_mode & ios_base::in))
+    _M_append_buffer();
+
+  if (__in) {
+    if (__n < 0 || __n > this->egptr() - this->eback())
+      return pos_type(off_type(-1));
+    this->setg(this->eback(), this->eback() + __n, this->egptr());
+  }
+
+  if (__out) {
+    if (__n < 0 || size_t(__n) > _M_str.size())
+      return pos_type(off_type(-1));
+
+    _CharT* __data_ptr = __CONST_CAST(_CharT*,_M_str.data());
+    size_t __data_size = _M_str.size();
+    
+    this->setp(__data_ptr, __data_ptr+__data_size);
+    this->pbump((int)__n);
+  }
+
+  return __pos;
+}
+
+// This is declared as a const member function because it is 
+// called by basic_stringbuf<>::str().  Precondition: this is a
+// write-only stringbuf.  We can't use an output buffer for read-
+// write stringbufs.  Postcondition: pptr is reset to the beginning
+// of the buffer.
+template <class _CharT, class _Traits, class _Alloc>
+void basic_stringbuf<_CharT, _Traits, _Alloc>::_M_append_buffer() const
+
+{
+  // Do we have a buffer to append?
+  if (this->pbase() == this->_M_Buf && this->pptr() != this->_M_Buf) {
+    basic_stringbuf<_CharT, _Traits, _Alloc>* __this = __CONST_CAST(_Self*,this);
+    __this->_M_str.append((const _CharT*)this->pbase(), (const _CharT*)this->pptr());
+    __this->setp(__CONST_CAST(_CharT*,_M_Buf),
+                 __CONST_CAST(_CharT*,_M_Buf + __STATIC_CAST(int,_S_BufSiz)));
+  }
+
+  // Have we run off the end of the string?
+  else if (this->pptr() == this->epptr()) {
+    basic_stringbuf<_CharT, _Traits, _Alloc>* __this = __CONST_CAST(_Self*,this);
+    __this->setp(__CONST_CAST(_CharT*,_M_Buf),
+                 __CONST_CAST(_CharT*,_M_Buf + __STATIC_CAST(int,_S_BufSiz)));
+  }
+}
+
+//----------------------------------------------------------------------
+// Non-inline istringstream member functions.
+
+template <class _CharT, class _Traits, class _Alloc>
+basic_istringstream<_CharT, _Traits, _Alloc>
+  ::basic_istringstream(ios_base::openmode __mode)
+    : basic_istream<_CharT, _Traits>(0),
+      _M_buf(__mode | ios_base::in)
+{
+  this->init(&_M_buf);
+}
+
+template <class _CharT, class _Traits, class _Alloc>
+basic_istringstream<_CharT, _Traits, _Alloc>
+  ::basic_istringstream(const _String& __str,ios_base::openmode __mode)
+    : basic_istream<_CharT, _Traits>(0),
+      _M_buf(__str, __mode | ios_base::in)
+{
+  this->init(&_M_buf);
+}
+
+template <class _CharT, class _Traits, class _Alloc>
+basic_istringstream<_CharT, _Traits, _Alloc>::~basic_istringstream()
+{}
+
+//----------------------------------------------------------------------
+// Non-inline ostringstream member functions.
+
+template <class _CharT, class _Traits, class _Alloc>
+basic_ostringstream<_CharT, _Traits, _Alloc>
+  ::basic_ostringstream(ios_base::openmode __mode)
+    : basic_ostream<_CharT, _Traits>(0),
+      _M_buf(__mode | ios_base::out)
+{
+  this->init(&_M_buf);
+}
+  
+template <class _CharT, class _Traits, class _Alloc>
+basic_ostringstream<_CharT, _Traits, _Alloc>
+  ::basic_ostringstream(const _String& __str, ios_base::openmode __mode)
+    : basic_ostream<_CharT, _Traits>(0),
+      _M_buf(__str, __mode | ios_base::out)
+{
+  this->init(&_M_buf);
+}
+
+template <class _CharT, class _Traits, class _Alloc>
+basic_ostringstream<_CharT, _Traits, _Alloc>::~basic_ostringstream()
+{}
+
+//----------------------------------------------------------------------
+// Non-inline stringstream member functions.
+
+template <class _CharT, class _Traits, class _Alloc>
+basic_stringstream<_CharT, _Traits, _Alloc>
+  ::basic_stringstream(ios_base::openmode __mode)
+    : basic_iostream<_CharT, _Traits>(0), _M_buf(__mode)
+{
+   this->init(&_M_buf);
+}
+
+template <class _CharT, class _Traits, class _Alloc>
+basic_stringstream<_CharT, _Traits, _Alloc>
+  ::basic_stringstream(const _String& __str, ios_base::openmode __mode)
+    : basic_iostream<_CharT, _Traits>(0), _M_buf(__str, __mode)
+{
+  this->init(&_M_buf);
+}
+
+template <class _CharT, class _Traits, class _Alloc>
+basic_stringstream<_CharT, _Traits, _Alloc>::~basic_stringstream()
+{}
+
+_STLP_END_NAMESPACE
+
+# undef __BSB_int_type__
+# undef __BSB_pos_type__
+
+# endif /* EXPOSE */
+
+#endif /* _STLP_SSTREAM_C */