#include <istream>
#include <ostream>
#include <bits/codecvt.h>
-#include <cstdio> // For BUFSIZ
+#include <cstdio> // For BUFSIZ
#include <bits/basic_file.h> // For __basic_file, __c_lock
+#ifdef __GXX_EXPERIMENTAL_CXX0X__
+#include <string> // For std::string overloads.
+#endif
_GLIBCXX_BEGIN_NAMESPACE(std)
* external disk file, and maintains a joint file position for both
* sequences. Many of its semantics are described in terms of similar
* behavior in the Standard C Library's @c FILE streams.
- */
+ */
// Requirements on traits_type, specific to this class:
// traits_type::pos_type must be fpos<traits_type::state_type>
// traits_type::off_type must be streamoff
* Actual size of internal buffer. This number is equal to the size
* of the put area + 1 position, reserved for the overflow char of
* a full area.
- */
+ */
size_t _M_buf_size;
// Set iff _M_buf is allocated memory from _M_allocate_internal_buffer.
bool _M_buf_allocated;
/**
- * _M_reading == false && _M_writing == false for 'uncommitted' mode;
+ * _M_reading == false && _M_writing == false for 'uncommitted' mode;
* _M_reading == true for 'read' mode;
* _M_writing == true for 'write' mode;
*
* NB: _M_reading == true && _M_writing == true is unused.
- */
+ */
bool _M_reading;
bool _M_writing;
* Necessary bits for putback buffer management.
*
* @note pbacks of over one character are not currently supported.
- */
- char_type _M_pback;
+ */
+ char_type _M_pback;
char_type* _M_pback_cur_save;
char_type* _M_pback_end_save;
- bool _M_pback_init;
+ bool _M_pback_init;
//@}
// Cached codecvt facet.
* Buffer for external characters. Used for input when
* codecvt::always_noconv() == false. When valid, this corresponds
* to eback().
- */
+ */
char* _M_ext_buf;
/**
* Size of buffer held by _M_ext_buf.
- */
+ */
streamsize _M_ext_buf_size;
/**
* Pointers into the buffer held by _M_ext_buf that delimit a
* subsequence of bytes that have been read but not yet converted.
* When valid, _M_ext_next corresponds to egptr().
- */
+ */
const char* _M_ext_next;
char* _M_ext_end;
* Initializes pback buffers, and moves normal buffers to safety.
* Assumptions:
* _M_in_cur has already been moved back
- */
+ */
void
_M_create_pback()
{
* Deactivates pback buffer contents, and restores normal buffer.
* Assumptions:
* The pback buffer has only moved forward.
- */
+ */
void
_M_destroy_pback() throw()
{
*
* The default constructor initializes the parent class using its
* own default ctor.
- */
+ */
basic_filebuf();
/**
* @brief The destructor closes the file first.
- */
+ */
virtual
~basic_filebuf()
{ this->close(); }
// Members:
/**
* @brief Returns true if the external file is open.
- */
+ */
bool
is_open() const throw()
{ return _M_file.is_open(); }
__filebuf_type*
open(const char* __s, ios_base::openmode __mode);
+#ifdef __GXX_EXPERIMENTAL_CXX0X__
+ /**
+ * @brief Opens an external file.
+ * @param s The name of the file.
+ * @param mode The open mode flags.
+ * @return @c this on success, NULL on failure
+ */
+ __filebuf_type*
+ open(const std::string& __s, ios_base::openmode __mode)
+ { return open(__s.c_str(), __mode); }
+#endif
+
/**
* @brief Closes the currently associated file.
* @return @c this on success, NULL on failure
* all the characters. The file is then closed.
*
* If any operations fail, this function also fails.
- */
+ */
__filebuf_type*
close();
* buffer; see
* http://gcc.gnu.org/onlinedocs/libstdc++/manual/bk01pt11ch25s02.html
* for more.
- */
+ */
virtual __streambuf_type*
setbuf(char_type* __s, streamsize __n);
* __off == egptr() - eback() upon underflow/uflow ('read' mode);
* __off == 0 upon overflow ('write' mode);
* __off == -1 upon open, setbuf, seekoff/pos ('uncommitted' mode).
- *
+ *
* NB: epptr() - pbase() == _M_buf_size - 1, since _M_buf_size
* reflects the actual allocated memory and the last cell is reserved
* for the overflow char of a full put area.
- */
+ */
void
_M_set_buffer(streamsize __off)
{
* functions from std::basic_istream. To control the associated
* sequence, an instance of std::basic_filebuf is used, which this page
* refers to as @c sb.
- */
+ */
template<typename _CharT, typename _Traits>
class basic_ifstream : public basic_istream<_CharT, _Traits>
{
* Initializes @c sb using its default constructor, and passes
* @c &sb to the base class initializer. Does not open any files
* (you haven't given it a filename to open).
- */
+ */
basic_ifstream() : __istream_type(), _M_filebuf()
{ this->init(&_M_filebuf); }
*
* Tip: When using std::string to hold the filename, you must use
* .c_str() before passing it to this constructor.
- */
+ */
explicit
basic_ifstream(const char* __s, ios_base::openmode __mode = ios_base::in)
: __istream_type(), _M_filebuf()
this->open(__s, __mode);
}
+#ifdef __GXX_EXPERIMENTAL_CXX0X__
+ /**
+ * @brief Create an input file stream.
+ * @param s std::string specifying the filename.
+ * @param mode Open file in specified mode (see std::ios_base).
+ *
+ * @c ios_base::in is automatically included in @a mode.
+ */
+ explicit
+ basic_ifstream(const std::string& __s,
+ ios_base::openmode __mode = ios_base::in)
+ : __istream_type(), _M_filebuf()
+ {
+ this->init(&_M_filebuf);
+ this->open(__s, __mode);
+ }
+#endif
+
/**
* @brief The destructor does nothing.
*
* The file is closed by the filebuf object, not the formatting
* stream.
- */
+ */
~basic_ifstream()
{ }
* @return The current basic_filebuf buffer.
*
* This hides both signatures of std::basic_ios::rdbuf().
- */
+ */
__filebuf_type*
rdbuf() const
{ return const_cast<__filebuf_type*>(&_M_filebuf); }
/**
* @brief Wrapper to test for an open file.
* @return @c rdbuf()->is_open()
- */
+ */
bool
is_open()
{ return _M_filebuf.is_open(); }
*
* Tip: When using std::string to hold the filename, you must use
* .c_str() before passing it to this constructor.
- */
+ */
void
open(const char* __s, ios_base::openmode __mode = ios_base::in)
{
this->clear();
}
+#ifdef __GXX_EXPERIMENTAL_CXX0X__
+ /**
+ * @brief Opens an external file.
+ * @param s The name of the file.
+ * @param mode The open mode flags.
+ *
+ * Calls @c std::basic_filebuf::open(s,mode|in). If that function
+ * fails, @c failbit is set in the stream's error state.
+ */
+ void
+ open(const std::string& __s, ios_base::openmode __mode = ios_base::in)
+ {
+ if (!_M_filebuf.open(__s, __mode | ios_base::in))
+ this->setstate(ios_base::failbit);
+ else
+ // _GLIBCXX_RESOLVE_LIB_DEFECTS
+ // 409. Closing an fstream should clear error state
+ this->clear();
+ }
+#endif
+
/**
* @brief Close the file.
*
* Calls @c std::basic_filebuf::close(). If that function
* fails, @c failbit is set in the stream's error state.
- */
+ */
void
close()
{
* functions from std::basic_ostream. To control the associated
* sequence, an instance of std::basic_filebuf is used, which this page
* refers to as @c sb.
- */
+ */
template<typename _CharT, typename _Traits>
class basic_ofstream : public basic_ostream<_CharT,_Traits>
{
* Initializes @c sb using its default constructor, and passes
* @c &sb to the base class initializer. Does not open any files
* (you haven't given it a filename to open).
- */
+ */
basic_ofstream(): __ostream_type(), _M_filebuf()
{ this->init(&_M_filebuf); }
*
* Tip: When using std::string to hold the filename, you must use
* .c_str() before passing it to this constructor.
- */
+ */
explicit
basic_ofstream(const char* __s,
ios_base::openmode __mode = ios_base::out|ios_base::trunc)
this->open(__s, __mode);
}
+#ifdef __GXX_EXPERIMENTAL_CXX0X__
+ /**
+ * @brief Create an output file stream.
+ * @param s std::string specifying the filename.
+ * @param mode Open file in specified mode (see std::ios_base).
+ *
+ * @c ios_base::out|ios_base::trunc is automatically included in
+ * @a mode.
+ */
+ explicit
+ basic_ofstream(const std::string& __s,
+ ios_base::openmode __mode = ios_base::out|ios_base::trunc)
+ : __ostream_type(), _M_filebuf()
+ {
+ this->init(&_M_filebuf);
+ this->open(__s, __mode);
+ }
+#endif
+
/**
* @brief The destructor does nothing.
*
* The file is closed by the filebuf object, not the formatting
* stream.
- */
+ */
~basic_ofstream()
{ }
* @return The current basic_filebuf buffer.
*
* This hides both signatures of std::basic_ios::rdbuf().
- */
+ */
__filebuf_type*
rdbuf() const
{ return const_cast<__filebuf_type*>(&_M_filebuf); }
/**
* @brief Wrapper to test for an open file.
* @return @c rdbuf()->is_open()
- */
+ */
bool
is_open()
{ return _M_filebuf.is_open(); }
*
* Tip: When using std::string to hold the filename, you must use
* .c_str() before passing it to this constructor.
- */
+ */
void
open(const char* __s,
ios_base::openmode __mode = ios_base::out | ios_base::trunc)
this->clear();
}
+#ifdef __GXX_EXPERIMENTAL_CXX0X__
+ /**
+ * @brief Opens an external file.
+ * @param s The name of the file.
+ * @param mode The open mode flags.
+ *
+ * Calls @c std::basic_filebuf::open(s,mode|out|trunc). If that
+ * function fails, @c failbit is set in the stream's error state.
+ */
+ void
+ open(const std::string& __s,
+ ios_base::openmode __mode = ios_base::out | ios_base::trunc)
+ {
+ if (!_M_filebuf.open(__s, __mode | ios_base::out))
+ this->setstate(ios_base::failbit);
+ else
+ // _GLIBCXX_RESOLVE_LIB_DEFECTS
+ // 409. Closing an fstream should clear error state
+ this->clear();
+ }
+#endif
+
/**
* @brief Close the file.
*
* Calls @c std::basic_filebuf::close(). If that function
* fails, @c failbit is set in the stream's error state.
- */
+ */
void
close()
{
* the inherited functions from std::basic_iostream. To control the
* associated sequence, an instance of std::basic_filebuf is used, which
* this page refers to as @c sb.
- */
+ */
template<typename _CharT, typename _Traits>
class basic_fstream : public basic_iostream<_CharT, _Traits>
{
* Initializes @c sb using its default constructor, and passes
* @c &sb to the base class initializer. Does not open any files
* (you haven't given it a filename to open).
- */
+ */
basic_fstream()
: __iostream_type(), _M_filebuf()
{ this->init(&_M_filebuf); }
*
* Tip: When using std::string to hold the filename, you must use
* .c_str() before passing it to this constructor.
- */
+ */
explicit
basic_fstream(const char* __s,
ios_base::openmode __mode = ios_base::in | ios_base::out)
this->open(__s, __mode);
}
+#ifdef __GXX_EXPERIMENTAL_CXX0X__
+ /**
+ * @brief Create an input/output file stream.
+ * @param s Null terminated string specifying the filename.
+ * @param mode Open file in specified mode (see std::ios_base).
+ */
+ explicit
+ basic_fstream(const std::string& __s,
+ ios_base::openmode __mode = ios_base::in | ios_base::out)
+ : __iostream_type(NULL), _M_filebuf()
+ {
+ this->init(&_M_filebuf);
+ this->open(__s, __mode);
+ }
+#endif
+
/**
* @brief The destructor does nothing.
*
* The file is closed by the filebuf object, not the formatting
* stream.
- */
+ */
~basic_fstream()
{ }
* @return The current basic_filebuf buffer.
*
* This hides both signatures of std::basic_ios::rdbuf().
- */
+ */
__filebuf_type*
rdbuf() const
{ return const_cast<__filebuf_type*>(&_M_filebuf); }
/**
* @brief Wrapper to test for an open file.
* @return @c rdbuf()->is_open()
- */
+ */
bool
is_open()
{ return _M_filebuf.is_open(); }
*
* Tip: When using std::string to hold the filename, you must use
* .c_str() before passing it to this constructor.
- */
+ */
void
open(const char* __s,
ios_base::openmode __mode = ios_base::in | ios_base::out)
this->clear();
}
+#ifdef __GXX_EXPERIMENTAL_CXX0X__
+ /**
+ * @brief Opens an external file.
+ * @param s The name of the file.
+ * @param mode The open mode flags.
+ *
+ * Calls @c std::basic_filebuf::open(s,mode). If that
+ * function fails, @c failbit is set in the stream's error state.
+ */
+ void
+ open(const std::string& __s,
+ ios_base::openmode __mode = ios_base::in | ios_base::out)
+ {
+ if (!_M_filebuf.open(__s, __mode))
+ this->setstate(ios_base::failbit);
+ else
+ // _GLIBCXX_RESOLVE_LIB_DEFECTS
+ // 409. Closing an fstream should clear error state
+ this->clear();
+ }
+#endif
+
/**
* @brief Close the file.
*
* Calls @c std::basic_filebuf::close(). If that function
* fails, @c failbit is set in the stream's error state.
- */
+ */
void
close()
{
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