X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/da3aea64f9e3cb2a3135ec108ab1721eae8457e2..0376ed540882131da043250a4341389f18f34bf6:/docs/latex/wx/inputstr.tex diff --git a/docs/latex/wx/inputstr.tex b/docs/latex/wx/inputstr.tex index 795b834dd3..a46d41fa39 100644 --- a/docs/latex/wx/inputstr.tex +++ b/docs/latex/wx/inputstr.tex @@ -3,13 +3,17 @@ % ----------------------------------------------------------------------------- \section{\class{wxInputStream}}\label{wxinputstream} +wxInputStream is an abstract base class which may not be used directly. + \wxheading{Derived from} \helpref{wxStreamBase}{wxstreambase} -\wxheading{See also} +\wxheading{Include files} + + -\helpref{wxStreamBuffer}{wxstreambuffer} +\latexignore{\rtfignore{\wxheading{Members}}} % ----------- % ctor & dtor @@ -20,37 +24,41 @@ Creates a dummy input stream. -\func{}{wxInputStream}{\param{wxStreamBuffer *}{sbuf}} - -Creates an input stream using the specified stream buffer \it{sbuf}. This -stream buffer can point to another stream. - \membersection{wxInputStream::\destruct{wxInputStream}} \func{}{\destruct{wxInputStream}}{\void} Destructor. -% ----------- -% IO function -% ----------- -\membersection{wxInputStream::Peek} - -\func{char}{Peek}{\void} - -Returns the first character in the input queue without removing it. - \membersection{wxInputStream::GetC} \func{char}{GetC}{\void} Returns the first character in the input queue and removes it. +\membersection{wxInputStream::Eof}\label{wxinputstreameof} + +\constfunc{wxInputStream}{Eof}{\void} + +Returns true if the end of stream has been reached. + +\membersection{wxInputStream::LastRead}\label{wxinputstreamlastread} + +\constfunc{size\_t}{LastRead}{\void} + +Returns the last number of bytes read. + +\membersection{wxInputStream::Peek} + +\func{char}{Peek}{\void} + +Returns the first character in the input queue without removing it. + \membersection{wxInputStream::Read} -\func{wxInputStream\&}{Read}{\param{void *}{buffer}, \param{size_t}{ size}} +\func{wxInputStream\&}{Read}{\param{void *}{buffer}, \param{size\_t}{ size}} -Reads the specified amount of bytes and stores the data in \it{buffer}. +Reads the specified amount of bytes and stores the data in {\it buffer}. \wxheading{Warning} @@ -61,7 +69,7 @@ The buffer absolutely needs to have at least the specified size. This function returns a reference on the current object, so the user can test any states of the stream right away. -\func{wxInputStream\&}{Read}{\param{wxOutputStream\&}{ stream_out}} +\func{wxInputStream\&}{Read}{\param{wxOutputStream\&}{ stream\_out}} Reads data from the input queue and stores it in the specified output stream. The data is read until an error is raised by one of the two streams. @@ -71,33 +79,39 @@ The data is read until an error is raised by one of the two streams. This function returns a reference on the current object, so the user can test any states of the stream right away. -% ------------------ -% Position functions -% ------------------ \membersection{wxInputStream::SeekI} -\func{off_t}{SeekI}{\param{off_t}{ pos}, \param{wxSeekMode}{ mode = wxFromStart}} +\func{off\_t}{SeekI}{\param{off\_t}{ pos}, \param{wxSeekMode}{ mode = wxFromStart}} Changes the stream current position. \membersection{wxInputStream::TellI} -\constfunc{off_t}{TellI}{\void} +\constfunc{off\_t}{TellI}{\void} Returns the current stream position. -% --------------- -% State functions -% --------------- -\membersection{wxInputStream::InputStreamBuffer} +\membersection{wxInputStream::Ungetch}\label{wxinputstreamungetch} -\func{wxStreamBuffer*}{InputStreamBuffer}{\void} +\func{size\_t}{Ungetch}{\param{const char*}{ buffer}, \param{size\_t}{ size}} -Returns the stream buffer associated with the input stream. +This function is only useful in {\it read} mode. It is the manager of the "Write-Back" +buffer. This buffer acts like a temporary buffer where data which has to be +read during the next read IO call are put. This is useful when you get a big +block of data which you didn't want to read: you can replace them at the top +of the input queue by this way. -\membersection{wxInputStream::LastRead} +Be very careful about this call in connection with calling SeekI() on the same +stream. Any call to SeekI() will invalidate any previous call to this method +(otherwise you could SeekI() to one position, "unread" a few bytes there, SeekI() +to another position and data would be either lost or corrupted). -\constfunc{size_t}{LastRead}{\void} +\wxheading{Return value} -Returns the last number of bytes read. +Returns the amount of bytes saved in the Write-Back buffer. + +\func{bool}{Ungetch}{\param{char }{c}} + +This function acts like the previous one except that it takes only one +character: it is sometimes shorter to use than the generic function.