added wxConvUI which determines the conversion used for the UI elements and can be...

[wxWidgets.git] / docs / latex / wx / textfile.tex

diff --git a/docs/latex/wx/textfile.tex b/docs/latex/wx/textfile.tex
index ff7ecc856fb41145b030ad5eff5d5e375af627da..c139c6262afb1066f2e05dcdeb715bbc2b268341 100644 (file)
--- a/docs/latex/wx/textfile.tex
+++ b/docs/latex/wx/textfile.tex
@@ -7,11 +7,11 @@ native" line termination sequences - in fact, it can be also used to modify the
 text files and change the line termination characters from one type (say DOS) to
 another (say Unix).
 
 text files and change the line termination characters from one type (say DOS) to
 another (say Unix).
 

-One word of warning: the class is not at all optimized for big files and so it
-will load the file entirely into memory when opened. Of course, you should not
+One word of warning: the class is not at all optimized for big files and thus
+it will load the file entirely into memory when opened. Of course, you should not

 work in this way with large files (as an estimation, anything over 1 Megabyte is
 surely too big for this class). On the other hand, it is not a serious
 work in this way with large files (as an estimation, anything over 1 Megabyte is
 surely too big for this class). On the other hand, it is not a serious

-limitation for the small files like configuration files or programs sources
+limitation for small files like configuration files or program sources

 which are well handled by wxTextFile.
 
 The typical things you may do with wxTextFile in order are:
 which are well handled by wxTextFile.
 
 The typical things you may do with wxTextFile in order are:


@@ -35,6 +35,7 @@ changed with \helpref{GoToLine}{wxtextfilegotoline}.
 \item Add/remove lines to the file: \helpref{AddLine}{wxtextfileaddline} and 
 \helpref{InsertLine}{wxtextfileinsertline} add new lines while 
 \helpref{RemoveLine}{wxtextfileremoveline} deletes the existing ones.
 \item Add/remove lines to the file: \helpref{AddLine}{wxtextfileaddline} and 
 \helpref{InsertLine}{wxtextfileinsertline} add new lines while 
 \helpref{RemoveLine}{wxtextfileremoveline} deletes the existing ones.

+\helpref{Clear}{wxtextfileclear} resets the file to empty.

 \item Save your changes: notice that the changes you make to the file will {\bf
 not} be saved automatically; calling \helpref{Close}{wxtextfileclose} or doing
 nothing discards them! To save the changes you must explicitly call 
 \item Save your changes: notice that the changes you make to the file will {\bf
 not} be saved automatically; calling \helpref{Close}{wxtextfileclose} or doing
 nothing discards them! To save the changes you must explicitly call 


@@ -119,14 +120,14 @@ be used in this case.
 
 \constfunc{bool}{Exists}{\void}
 
 
 \constfunc{bool}{Exists}{\void}
 

-Return TRUE if file exists - the name of the file should have been specified
+Return true if file exists - the name of the file should have been specified

 in the constructor before calling Exists().
 
 \membersection{wxTextFile::IsOpened}\label{wxtextfileisopened}
 
 \constfunc{bool}{IsOpened}{\void}
 
 in the constructor before calling Exists().
 
 \membersection{wxTextFile::IsOpened}\label{wxtextfileisopened}
 
 \constfunc{bool}{IsOpened}{\void}
 

-Returns TRUE if the file is currently opened.
+Returns true if the file is currently opened.

 
 \membersection{wxTextFile::GetLineCount}\label{wxtextfilegetlinecount}
 
 
 \membersection{wxTextFile::GetLineCount}\label{wxtextfilegetlinecount}
 


@@ -169,16 +170,18 @@ and used by \helpref{GetFirstLine()}{wxtextfilegetfirstline}/\helpref{GetNextLin
 
 \constfunc{bool}{Eof}{\void}
 
 
 \constfunc{bool}{Eof}{\void}
 

-Returns TRUE if the current line is the last one.
+Returns true if the current line is the last one.

 
 \membersection{wxTextFile::GetEOL}\label{wxtextfilegeteol}
 
 \constfunc{static const char*}{GetEOL}{\param{wxTextFileType }{type = typeDefault}}
 
 Get the line termination string corresponding to given constant. {\it typeDefault} is
 
 \membersection{wxTextFile::GetEOL}\label{wxtextfilegeteol}
 
 \constfunc{static const char*}{GetEOL}{\param{wxTextFileType }{type = typeDefault}}
 
 Get the line termination string corresponding to given constant. {\it typeDefault} is

-the value defined during the compilation and corresponds to the native format of the
-platform, i.e. it will be wxTextFileType\_Dos under Windows, wxTextFileType\_Unix under
-Unix and wxTextFileType\_Mac under Mac.
+the value defined during the compilation and corresponds to the native format
+of the platform, i.e. it will be wxTextFileType\_Dos under Windows,
+wxTextFileType\_Unix under Unix (including Mac OS X when compiling with the
+Apple Developer Tools) and wxTextFileType\_Mac under Mac OS (including
+Mac OS X when compiling with CodeWarrior).

 
 \membersection{wxTextFile::GetFirstLine}\label{wxtextfilegetfirstline}
 
 
 \membersection{wxTextFile::GetFirstLine}\label{wxtextfilegetfirstline}
 


@@ -189,10 +192,13 @@ allows more "iterator-like" traversal of the list of lines, i.e. you may
 write something like:
 
 \begin{verbatim}
 write something like:
 
 \begin{verbatim}

-for ( str = GetFirstLine(); !Eof(); str = GetNextLine() )
+wxTextFile file;
+...
+for ( str = file.GetFirstLine(); !file.Eof(); str = file.GetNextLine() )

 {
     // do something with the current line in str
 }
 {
     // do something with the current line in str
 }

+// do something with the last line in str

 \end{verbatim}
 
 \membersection{wxTextFile::GetNextLine}\label{wxtextfilegetnextline}
 \end{verbatim}
 
 \membersection{wxTextFile::GetNextLine}\label{wxtextfilegetnextline}


@@ -212,7 +218,21 @@ Gets the previous line in the file.
 
 \func{wxString\&}{GetLastLine}{\void}
 
 
 \func{wxString\&}{GetLastLine}{\void}
 

-Gets the last line of the file.
+Gets the last line of the file. Together with 
+\helpref{GetPrevLine}{wxtextfilegetprevline} it allows to enumerate the lines
+in the file from the end to the beginning like this:
+
+\begin{verbatim}
+wxTextFile file;
+...
+for ( str = file.GetLastLine();
+      file.GetCurrentLine() > 0;
+      str = file.GetPrevLine() )
+{
+    // do something with the current line in str
+}
+// do something with the first line in str
+\end{verbatim}

 
 \membersection{wxTextFile::GetLineType}\label{wxtextfilegetlinetype}
 
 
 \membersection{wxTextFile::GetLineType}\label{wxtextfilegetlinetype}
 


@@ -242,28 +262,41 @@ Insert a line before the line number {\it n}.
 
 \membersection{wxTextFile::Open}\label{wxtextfileopen}
 
 
 \membersection{wxTextFile::Open}\label{wxtextfileopen}
 

-\constfunc{bool}{Open}{\void}
+\constfunc{bool}{Open}{\param{wxMBConv\&}{ conv = wxConvUTF8}}

 
 

-\constfunc{bool}{Open}{\param{const wxString\& }{strFile}}
+\constfunc{bool}{Open}{\param{const wxString\& }{strFile}, \param{wxMBConv\&}{ conv = wxConvUTF8}}

 
 Open() opens the file with the given name or the name which was given in the
 \helpref{constructor}{wxtextfilector} and also loads file in memory on
 success. It will fail if the file does not exist, 
 \helpref{Create}{wxtextfilecreate} should be used in this case.
 
 
 Open() opens the file with the given name or the name which was given in the
 \helpref{constructor}{wxtextfilector} and also loads file in memory on
 success. It will fail if the file does not exist, 
 \helpref{Create}{wxtextfilecreate} should be used in this case.
 

+The {\it conv} argument is only meaningful in Unicode build of wxWidgets when
+it is used to convert the file to wide character representation.
+

 \membersection{wxTextFile::RemoveLine}\label{wxtextfileremoveline}
 
 \constfunc{void}{RemoveLine}{\param{size\_t }{n}}
 
 Delete line number {\it n} from the file.
 
 \membersection{wxTextFile::RemoveLine}\label{wxtextfileremoveline}
 
 \constfunc{void}{RemoveLine}{\param{size\_t }{n}}
 
 Delete line number {\it n} from the file.
 

+\membersection{wxTextFile::Clear}\label{wxtextfileclear}
+
+\constfunc{void}{Clear}{\void}
+
+Delete all lines from the file, set current line number to 0.
+

 \membersection{wxTextFile::Write}\label{wxtextfilewrite}
 
 \membersection{wxTextFile::Write}\label{wxtextfilewrite}
 

-\constfunc{bool}{Write}{\param{wxTextFileType }{typeNew = wxTextFileType\_None}}
+\constfunc{bool}{Write}{\param{wxTextFileType }{typeNew = wxTextFileType\_None}, \param{wxMBConv\&}{ conv = wxConvUTF8}}

 
 Change the file on disk. The {\it typeNew} parameter allows you to change the
 file format (default argument means "don't change type") and may be used to
 convert, for example, DOS files to Unix.
 
 
 Change the file on disk. The {\it typeNew} parameter allows you to change the
 file format (default argument means "don't change type") and may be used to
 convert, for example, DOS files to Unix.
 

-Returns TRUE if operation succeeded, FALSE if it failed.
+The {\it conv} argument is only meaningful in Unicode build of wxWidgets when
+it is used to convert all lines to multibyte representation before writing them
+them to physical file.
+
+Returns true if operation succeeded, false if it failed.