Restore wxFile docs
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@54447 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
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@ -141,25 +141,40 @@ public:
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class wxFile
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{
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public:
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//@{
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/**
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Associates the file with the given file descriptor, which has already been
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opened.
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Opening mode
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*/
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enum OpenMode { read, write, read_write, write_append, write_excl };
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/**
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Standard file descriptors
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*/
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enum { fd_invalid = -1, fd_stdin, fd_stdout, fd_stderr };
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/**
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Default constructor.
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*/
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wxFile();
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/**
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Opens a file with a filename.
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@param filename
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The filename.
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@param mode
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The mode in which to open the file. May be one of read(), write() and
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wxFile::read_write.
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@param fd
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An existing file descriptor (see Attach() for the list of predefined
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descriptors)
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The mode in which to open the file. May be one of @c wxFile::read,
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@c wxFile::write and @c wxFile::read_write.
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*/
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wxFile();
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wxFile(const wxString& filename,
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wxFile::OpenMode mode = wxFile::read);
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/**
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Associates the file with the given file descriptor, which has already been
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opened. See Attach() for the list of predefined descriptors.
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@param fd
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An existing file descriptor.
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*/
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wxFile(int fd);
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//@}
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/**
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Destructor will close the file.
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@ -168,17 +183,17 @@ public:
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~wxFile();
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/**
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This function verifies if we may access the given file in specified mode. Only
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values of read() or write() really make sense here.
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This function verifies if we may access the given file in specified mode.
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Only values of @c wxFile::read or @c wxFile::write really make sense here.
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*/
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static bool Access(const wxString& name, OpenMode mode);
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/**
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Attaches an existing file descriptor to the wxFile object. Example of predefined
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file descriptors are 0, 1 and 2 which correspond to stdin, stdout and stderr
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(and
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have symbolic names of @b wxFile::fd_stdin, @b wxFile::fd_stdout and @b
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wxFile::fd_stderr).
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Attaches an existing file descriptor to the wxFile object. Example of
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predefined file descriptors are 0, 1 and 2 which correspond to stdin,
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stdout and stderr (and have symbolic names of @c wxFile::fd_stdin,
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@c wxFile::fd_stdout and @c wxFile::fd_stderr).
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The descriptor should be already opened and it will be closed by wxFile
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object.
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*/
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@ -207,11 +222,11 @@ public:
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/**
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Returns @true if the end of the file has been reached.
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Note that the behaviour of the file pointer based class
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wxFFile is different as wxFFile::Eof
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will return @true here only if an attempt has been made to read
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@e past the last byte of the file, while wxFile::Eof() will return @true
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even before such attempt is made if the file pointer is at the last position
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in the file.
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wxFFile is different as wxFFile::Eof will return @true here only if an
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attempt has been made to read @b past the last byte of the file, while
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wxFile::Eof() will return @true even before such attempt is made if the
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file pointer is at the last position in the file.
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Note also that this function doesn't work on unseekable file descriptors
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(examples include pipes, terminals and sockets under Unix) and an attempt to
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use it will result in an error message in such case. So, to read the entire
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@ -262,14 +277,17 @@ public:
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bool Open(const wxString& filename,
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wxFile::OpenMode mode = wxFile::read);
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//@{
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/**
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if there was an error.
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Reads from the file into a memory buffer.
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@param buffer
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Buffer to write in
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@param count
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Bytes to read
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@return The number of bytes read, or the symbol wxInvalidOffset
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*/
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size_t Read(void* buffer, size_t count);
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Parameters Return value
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The number of bytes read, or the symbol wxInvalidOffset();
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//@}
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/**
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Seeks to the specified position.
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@ -299,19 +317,30 @@ public:
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wxFileOffset SeekEnd(wxFileOffset ofs = 0);
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/**
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Returns the current position or wxInvalidOffset if file is not opened or if
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another
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error occurred.
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Returns the current position or wxInvalidOffset if file is not opened or
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if another error occurred.
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*/
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wxFileOffset Tell() const;
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/**
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Write data to the file (descriptor).
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@buffer
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Buffer from which to read data
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@param count
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Number of bytes to write
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@return The number of bytes written.
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*/
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size_t Write(const void *buffer, size_t count);
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/**
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Writes the contents of the string to the file, returns @true on success.
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The second argument is only meaningful in Unicode build of wxWidgets when
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@a conv is used to convert @a s to multibyte representation.
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@a conv is used to convert @a s to a multibyte representation.
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Note that this method only works with @c NUL-terminated strings, if you want
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to write data with embedded @c NULs to the file you should use the other
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@ref write() "Write() overload".
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Write() overload.
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*/
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bool Write(const wxString& s, const wxMBConv& conv = wxConvUTF8);
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