X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/8daf3c366409ae9b9f657370c43cc15896704b14..9379c0d752144826342fa2688a77aa5cccea3d9b:/docs/latex/wx/pathlist.tex?ds=sidebyside diff --git a/docs/latex/wx/pathlist.tex b/docs/latex/wx/pathlist.tex index b74547fea1..aa241be222 100644 --- a/docs/latex/wx/pathlist.tex +++ b/docs/latex/wx/pathlist.tex @@ -2,12 +2,10 @@ The path list is a convenient way of storing a number of directories, and when presented with a filename without a directory, searching for an existing file -in those directories. Storing the filename only in an application's files and -using a locally-defined list of directories makes the application and its files more -portable. +in those directories. -Use the \helpref{wxFileName::SplitPath}{wxfilenamesplitpath} global function -to extract the filename from the path. +Be sure to look also at \helpref{wxStandardPaths}{wxstandardpaths} if you only +want to search files in some standard paths. \wxheading{Derived from} @@ -19,7 +17,7 @@ to extract the filename from the path. \wxheading{See also} -\helpref{wxArrayString}{wxarraystring} +\helpref{wxArrayString}{wxarraystring}, \helpref{wxStandardPaths}{wxstandardpaths}, \helpref{wxFileName}{wxfilename} \latexignore{\rtfignore{\wxheading{Members}}} @@ -40,45 +38,65 @@ Constructs the object calling the \helpref{Add}{wxpathlistadd} function. \func{void}{AddEnvList}{\param{const wxString\& }{env\_variable}} Finds the value of the given environment variable, and adds all paths -to the path list. Useful for finding files in the PATH variable, for +to the path list. Useful for finding files in the {\tt PATH} variable, for example. \membersection{wxPathList::Add}\label{wxpathlistadd} -\func{void}{Add}{\param{const wxString\& }{path}} +\func{bool}{Add}{\param{const wxString\& }{path}} \func{void}{Add}{\param{const wxArrayString\& }{arr}} -The first form adds the given directory (the filename if present is removed) -to the path list, if the path is not already in the list. +The first form adds the given directory to the path list, if the path is not already in the list. +If the path cannot be normalized for some reason, it returns \false. The second form just calls the first form on all elements of the given array. +The {\it path} is always considered a directory but no existence checks will be done on it +(because if it doesn't exist, it could be created later and thus result a valid path when +\helpref{FindValidPath}{wxpathlistfindvalidpath} is called). + +{\bf Note:} if the given path is relative, it won't be made absolute before adding it +(this is why \helpref{FindValidPath}{wxpathlistfindvalidpath} may return relative paths). + \membersection{wxPathList::EnsureFileAccessible}\label{wxpathlistensurefileaccessible} -\func{void}{EnsureFileAccessible}{\param{const wxString\& }{filename}} +\func{bool}{EnsureFileAccessible}{\param{const wxString\& }{filename}} -Given a full filename (with path), ensures that files in the same path -can be accessed using the pathlist. It does this by stripping the -filename and adding the path to the list if not already there. +Given a full filename (with path), calls \helpref{Add}{wxpathlistadd} with the path +of the file. \membersection{wxPathList::FindAbsoluteValidPath}\label{wxpathlistfindabsolutepath} \constfunc{wxString}{FindAbsoluteValidPath}{\param{const wxString\& }{file}} -Searches for a full path for an existing file by appending {\it file} to -successive members of the path list. If the file wasn't found, an empty -string is returned. +Like \helpref{FindValidPath}{wxpathlistfindvalidpath} but this function always +returns an absolute path (eventually prepending the current working directory +to the value returned \helpref{FindValidPath}{wxpathlistfindvalidpath}) or an +empty string. \membersection{wxPathList::FindValidPath}\label{wxpathlistfindvalidpath} \constfunc{wxString}{FindValidPath}{\param{const wxString\& }{file}} -Searches for a full path for an existing file by appending {\it file} to -successive members of the path list. If the file wasn't found, an empty string -is returned. This path may be relative to the current working directory. +Searches the given file in all paths stored in this class. +The first path which concatenated to the given string points to an existing +file (see \helpref{wxFileExists}{wxfileexists}) is returned. + +If the file wasn't found in any of the stored paths, an empty string is returned. + +The given string must be a file name, eventually with a path prefix (if the path +prefix is absolute, only its name will be searched); i.e. it must not end with +a directory separator (see \helpref{wxFileName::GetPathSeparator}{wxfilenamegetpathseparator}) +otherwise an assertion will fail. + +The returned path may be relative to the current working directory. +Note in fact that wxPathList can be used to store both relative and absolute paths so that +if you \helpref{Add()}{wxpathlistadd}ed relative paths, then the current working directory +(see \helpref{wxGetCwd}{wxgetcwd} and \helpref{wxSetWorkingDirectory}{wxsetworkingdirectory}) +may affect the value returned by this function!