X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/dbd94b75015561fe527069c138ce43c44797fe35..36d55705af108772d5ecf9b5ebcc3e651c840b3d:/docs/latex/wx/wxstring.tex diff --git a/docs/latex/wx/wxstring.tex b/docs/latex/wx/wxstring.tex index c66a16915e..40305dd472 100644 --- a/docs/latex/wx/wxstring.tex +++ b/docs/latex/wx/wxstring.tex @@ -16,6 +16,11 @@ method ({\tt length()} in this case, always the lowercase version) should be used as it will ensure smoother transition to {\tt std::string} when wxWidgets starts using it instead of wxString. +Also please note that in this manual \texttt{char} is sometimes used instead of +\texttt{wxChar} because it hasn't been fully updated yet. Please substitute as +necessary and refer to the sources in case of a doubt. + + \wxheading{Derived from} None @@ -119,7 +124,8 @@ length of the prefix then. \helpref{CmpNoCase}{wxstringcmpnocase}\\ \helpref{IsSameAs}{wxstringissameas}\\ \helpref{Matches}{wxstringmatches}\\ -\helpref{StartsWith}{wxstringstartswith} +\helpref{StartsWith}{wxstringstartswith}\\ +\helpref{EndsWith}{wxstringendswith} \membersection{Substring extraction}\label{substringextractioninwxstring} @@ -135,7 +141,9 @@ substring. \helpref{BeforeLast}{wxstringbeforelast}\\ \helpref{AfterFirst}{wxstringafterfirst}\\ \helpref{AfterLast}{wxstringafterlast}\\ -\helpref{StartsWith}{wxstringstartswith} +\helpref{StartsWith}{wxstringstartswith}\\ +\helpref{EndsWith}{wxstringendswith} + \membersection{Case conversion}\label{caseconversioninwxstring} @@ -540,7 +548,7 @@ Returns the empty string if {\it ch} is not found. \membersection{wxString::c\_str}\label{wxstringcstr} -\constfunc{const char *}{c\_str}{\void} +\constfunc{const wxChar *}{c\_str}{\void} Returns a pointer to the string data ({\tt const char*} in ANSI build, {\tt const wchar\_t*} in Unicode build). @@ -560,6 +568,8 @@ See also: \helpref{Empty}{wxstringempty} \membersection{wxString::Cmp}\label{wxstringcmp} +\constfunc{int}{Cmp}{\param{const wxString\&}{ s}} + \constfunc{int}{Cmp}{\param{const char*}{ psz}} Case-sensitive comparison. @@ -572,6 +582,8 @@ See also \helpref{CmpNoCase}{wxstringcmpnocase}, \helpref{IsSameAs}{wxstringissa \membersection{wxString::CmpNoCase}\label{wxstringcmpnocase} +\constfunc{int}{CmpNoCase}{\param{const wxString\&}{ s}} + \constfunc{int}{CmpNoCase}{\param{const char*}{ psz}} Case-insensitive comparison. @@ -638,7 +650,7 @@ Same as \helpref{Find}{wxstringfind}. Returns string representation suitable for passing to OS' functions for file handling. In ANSI build, this is same as \helpref{c\_str}{wxstringcstr}. In Unicode build, returned value can be either wide character string -or C string in charset matching the {\tt wxConvFile} object, depending on +or C string in charset matching the {\tt wxConvFileName} object, depending on the OS. \wxheading{See also} @@ -659,7 +671,7 @@ This static function returns the string containing the result of calling \membersection{wxString::FormatV}\label{wxstringformatv} -\func{static wxString}{Format}{\param{const wxChar }{*format}, \param{va\_list }{argptr}} +\func{static wxString}{FormatV}{\param{const wxChar }{*format}, \param{va\_list }{argptr}} This static function returns the string containing the result of calling \helpref{PrintfV}{wxstringprintfv} with the passed parameters on it. @@ -694,7 +706,7 @@ Returns the character at position {\it n} (read-only). \membersection{wxString::GetData}\label{wxstringgetdata} -\constfunc{const char*}{GetData}{\void} +\constfunc{const wxChar*}{GetData}{\void} wxWidgets compatibility conversion. Returns a constant pointer to the data in the string. @@ -723,16 +735,6 @@ to put the string back into a reasonable state. Same as \helpref{wxString::Find}{wxstringfind}. -\constfunc{size\_t}{Index}{\param{const char*}{ sz}, \param{bool}{ caseSensitive = true}, \param{bool}{ fromEnd = false}} - -Search the element in the array, starting from either side. - -If {\it fromEnd} is true, reverse search direction. - -If {\bf caseSensitive}, comparison is case sensitive (the default). - -Returns the index of the first item matched, or {\tt wxNOT\_FOUND}. - % TODO %\membersection{wxString::insert}\label{wxstringinsert} % Wrong! @@ -774,9 +776,7 @@ caseSensitive is true by default (case matters). Returns true if strings are equal, false otherwise. -See also \helpref{Cmp}{wxstringcmp}, \helpref{CmpNoCase}{wxstringcmpnocase}, \helpref{IsSameAs}{wxstringissameas2} - -\membersection{wxString::IsSameAs}\label{wxstringissameas2} +See also \helpref{Cmp}{wxstringcmp}, \helpref{CmpNoCase}{wxstringcmpnocase} \constfunc{bool}{IsSameAs}{\param{char}{ c}, \param{bool}{ caseSensitive = true}} @@ -785,7 +785,7 @@ case-sensitive if {\it caseSensitive} is true (default) or not if it is false. Returns true if the string is equal to the character, false otherwise. -See also \helpref{Cmp}{wxstringcmp}, \helpref{CmpNoCase}{wxstringcmpnocase}, \helpref{IsSameAs}{wxstringissameas} +See also \helpref{Cmp}{wxstringcmp}, \helpref{CmpNoCase}{wxstringcmpnocase} \membersection{wxString::IsWord}\label{wxstringisword} @@ -917,7 +917,7 @@ Same as Truncate. Removes the portion from {\it pos} to the end of the string. \func{wxString\&}{Remove}{\param{size\_t}{ pos}, \param{size\_t}{ len}} -Removes the {\it len} characters from the string, starting at {\it pos}. +Removes {\it len} characters from the string, starting at {\it pos}. \membersection{wxString::RemoveLast}\label{wxstringremovelast} @@ -970,6 +970,16 @@ of the string (i.e. after the prefix) into {\it rest} string if it is not {\tt NULL}. Otherwise, the function returns {\tt false} and doesn't modify the {\it rest}. +\membersection{wxString::EndsWith}\label{wxstringendswith} + +\constfunc{bool}{EndsWith}{\param{const wxChar }{*suffix}, \param{wxString }{*rest = NULL}} + +This function can be used to test if the string ends with the specified +{\it suffix}. If it does, the function will return {\tt true} and put the +beginning of the string before the suffix into {\it rest} string if it is not +{\tt NULL}. Otherwise, the function returns {\tt false} and doesn't +modify the {\it rest}. + \membersection{wxString::Strip}\label{wxstringstrip} \begin{verbatim} @@ -1045,10 +1055,13 @@ familiar with C) results. \constfunc{bool}{ToULong}{\param{unsigned long}{ *val}, \param{int }{base = $10$}} -Attempts to convert the string to a unsigned integer in base {\it base}. +Attempts to convert the string to an unsigned integer in base {\it base}. Returns {\tt true} on success in which case the number is stored in the location pointed to by {\it val} or {\tt false} if the string does not -represent a valid number in the given base. +represent a valid number in the given base. Please notice that this function +behaves in the same way as the standard \texttt{strtoul()} and so it simply +converts negative numbers to unsigned representation instead of rejecting them +(e.g. $-1$ is returned as \texttt{ULONG\_MAX}). See \helpref{wxString::ToLong}{wxstringtolong} for the more detailed description of the {\it base} parameter. @@ -1062,7 +1075,8 @@ description of the {\it base} parameter. \func{wxString\&}{Trim}{\param{bool}{ fromRight = true}} -Removes spaces from the left or from the right (default). +Removes white-space (space, tabs, form feed, newline and carriage return) from +the left or from the right end of the string (right is default). \membersection{wxString::Truncate}\label{wxstringtruncate} @@ -1168,11 +1182,13 @@ Concatenation in place: the argument is appended to the string. \membersection{wxString::operator []}\label{wxstringoperatorbracket} -\func{char\&}{operator []}{\param{size\_t}{ i}} +\func{wxChar\&}{operator []}{\param{size\_t}{ i}} -\func{char}{operator []}{\param{size\_t}{ i}} +\constfunc{wxChar}{operator []}{\param{size\_t}{ i}} -\func{char}{operator []}{\param{int}{ i}} +\func{wxChar\&}{operator []}{\param{int}{ i}} + +\constfunc{wxChar}{operator []}{\param{int}{ i}} Element extraction. @@ -1264,6 +1280,13 @@ buffer (which must be writable, of course) you might call it like this: } \end{verbatim} +Note that the exact usage of this depends on whether on not wxUSE\_STL is enabled. If +wxUSE\_STL is enabled, wxStringBuffer creates a separate empty character buffer, and +if wxUSE\_STL is disabled, it uses GetWriteBuf() from wxString, keeping the same buffer +wxString uses intact. In other words, relying on wxStringBuffer containing the old +wxString data is probably not a good idea if you want to build your program in both +with and without wxUSE\_STL. + \wxheading{Derived from} None @@ -1292,7 +1315,83 @@ Restores the string passed to the constructor to the usable state by calling \membersection{wxStringBuffer::operator wxChar *}\label{wxstringbufferwxchar} -\constfunc{wxChar *}{operator wxChar *}{\void} +\func{wxChar *}{operator wxChar *}{\void} + +Returns the writable pointer to a buffer of the size at least equal to the +length specified in the constructor. + + + +\section{\class{wxStringBufferLength}}\label{wxstringbufferlength} + +This tiny class allows to conveniently access the \helpref{wxString}{wxstring} +internal buffer as a writable pointer without any risk of forgetting to restore +the string to the usable state later, and allows the user to set the internal +length of the string. + +For example, assuming you have a low-level OS function called +{\tt int GetMeaningOfLifeAsString(char *)} copying the value in the provided +buffer (which must be writable, of course), and returning the actual length +of the string, you might call it like this: + +\begin{verbatim} + wxString theAnswer; + wxStringBuffer theAnswerBuffer(theAnswer, 1024); + int nLength = GetMeaningOfLifeAsString(theAnswerBuffer); + theAnswerBuffer.SetLength(nLength); + if ( theAnswer != "42" ) + { + wxLogError("Something is very wrong!"); + } +\end{verbatim} + +Note that the exact usage of this depends on whether on not wxUSE\_STL is enabled. If +wxUSE\_STL is enabled, wxStringBuffer creates a separate empty character buffer, and +if wxUSE\_STL is disabled, it uses GetWriteBuf() from wxString, keeping the same buffer +wxString uses intact. In other words, relying on wxStringBuffer containing the old +wxString data is probably not a good idea if you want to build your program in both +with and without wxUSE\_STL. + +Note that SetLength {\tt must} be called before wxStringBufferLength destructs. + +\wxheading{Derived from} + +None + +\wxheading{Include files} + + + +\latexignore{\rtfignore{\wxheading{Members}}} + +\membersection{wxStringBufferLength::wxStringBufferLength}\label{wxstringbufferlengthctor} + +\func{}{wxStringBufferLength}{\param{const wxString\& }{str}, \param{size\_t }{len}} + +Constructs a writable string buffer object associated with the given string +and containing enough space for at least {\it len} characters. Basically, this +is equivalent to calling \helpref{GetWriteBuf}{wxstringgetwritebuf} and +saving the result. + +\membersection{wxStringBufferLength::\destruct{wxStringBufferLength}}\label{wxstringbufferlengthdtor} + +\func{}{\destruct{wxStringBufferLength}}{\void} + +Restores the string passed to the constructor to the usable state by calling +\helpref{UngetWriteBuf}{wxstringungetwritebuf} on it. + +\membersection{wxStringBufferLength::SetLength}\label{wxstringbufferlengthsetlength} + +\func{void}{SetLength}{\param{size\_t }{nLength}} + +Sets the internal length of the string referred to by wxStringBufferLength to +{\it nLength} characters. + +Must be called before wxStringBufferLength destructs. + +\membersection{wxStringBufferLength::operator wxChar *}\label{wxstringbufferlengthwxchar} + +\func{wxChar *}{operator wxChar *}{\void} Returns the writable pointer to a buffer of the size at least equal to the length specified in the constructor.