X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/e2a6f23364aefcd5095dc6558e3ab8144363fa96..7a632f1056d7894daca7342394c1db9b61f6aecf:/docs/latex/wx/inputstr.tex diff --git a/docs/latex/wx/inputstr.tex b/docs/latex/wx/inputstr.tex index fec1deea18..1df6d394dc 100644 --- a/docs/latex/wx/inputstr.tex +++ b/docs/latex/wx/inputstr.tex @@ -3,13 +3,15 @@ % ----------------------------------------------------------------------------- \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} + % ----------- % ctor & dtor @@ -20,75 +22,88 @@ 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::GetC} + +\func{char}{GetC}{\void} + +Returns the first character in the input queue and removes it. + +\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::GetC} - -\func{char}{GetC}{\void} +\membersection{wxInputStream::Read} -Returns the first character in the input queue and removes it. +\func{wxInputStream\&}{Read}{\param{void *}{buffer}, \param{size\_t}{ size}} -\membersection{wxInputStream::Read} +Reads the specified amount of bytes and stores the data in {\it buffer}. -\func{wxInputStream\&}{Read}{\param{void *}{buffer}, \param{size_t}{ size}} +\wxheading{Warning} -Reads the specified amount of bytes and stores the data in \it{buffer}. +The buffer absolutely needs to have at least the specified size. -\it{WARNING!} The buffer absolutely needs to have at least the specified size. +\wxheading{Return value} 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. -% ------------------ -% Position functions -% ------------------ +\wxheading{Return value} + +This function returns a reference on the current object, so the user can test +any states of the stream right away. + \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{wxinputstream_ungetch} -\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 datas 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.