X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/f1e7793361bb0106611e5d1373b4e1e6ed30f14f..a1c3cdc4a2c4cc2b15d7fdf60c1be228f9fbc520:/docs/latex/wx/filename.tex?ds=sidebyside diff --git a/docs/latex/wx/filename.tex b/docs/latex/wx/filename.tex index 4c79011c30..3239145221 100644 --- a/docs/latex/wx/filename.tex +++ b/docs/latex/wx/filename.tex @@ -6,7 +6,7 @@ %% Created: 30.11.01 %% RCS-ID: $Id$ %% Copyright: (c) 2001 Vadim Zeitlin -%% License: wxWidgets license +%% License: wxWindows license %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% \section{\class{wxFileName}}\label{wxfilename} @@ -56,7 +56,7 @@ enum wxPathFormat \latexignore{\rtfignore{\wxheading{Function groups}}} -\membersection{File name format} +\membersection{File name format}\label{filenameformat} wxFileName currently supports the file names in the Unix, DOS/Windows, Mac OS and VMS formats. Although these formats are quite different, wxFileName tries @@ -73,47 +73,68 @@ state and \helpref{IsOk}{wxfilenameisok} returns {\tt false} for it. File names can be case-sensitive or not, the function\rtfsp \helpref{IsCaseSensitive}{wxfilenameiscasesensitive} allows to determine this. -The rules for determining if the file name is absolute or relative also depends -on the file name format and the only portable way to answer to this question is -to use \helpref{IsAbsolute}{wxfilenameisabsolute} method. To ensure that the -filename is absolute you may use \helpref{MakeAbsolute}{wxfilenamemakeabsolute}. -There is also an inverse function -\helpref{MakeRelativeTo}{wxfilenamemakerelativeto} which undoes what -\helpref{Normalize(wxPATH\_NORM\_DOTS)}{wxfilenamenormalize} does. +The rules for determining whether the file name is absolute or relative also +depend on the file name format and the only portable way to answer this +question is to use \helpref{IsAbsolute}{wxfilenameisabsolute} or\rtfsp +\helpref{IsRelative}{wxfilenameisrelative} method. Note that on Windows, "X:" +refers to the current working directory on drive X. Therefore, a wxFileName +instance constructed from for example "X:dir/file.ext" treats the portion +beyond drive separator as being relative to that directory. + +To ensure that the filename is absolute, you may use\rtfsp +\helpref{MakeAbsolute}{wxfilenamemakeabsolute}. There is also an inverse +function \helpref{MakeRelativeTo}{wxfilenamemakerelativeto} which undoes +what \helpref{Normalize(wxPATH\_NORM\_DOTS)}{wxfilenamenormalize} does. Other functions returning information about the file format provided by this class are \helpref{GetVolumeSeparator}{wxfilenamegetvolumeseparator},\rtfsp \helpref{IsPathSeparator}{wxfilenameispathseparator}. -\helpref{IsRelative}{wxfilenameisrelative} +\membersection{File name construction}\label{filenameconstruction} -\membersection{File name construction} +You can initialize a wxFileName instance using one of the following functions: -TODO. +\helpref{wxFileName constructors}{wxfilenamewxfilename}\\ +\helpref{Assign}{wxfilenameassign}\\ +\helpref{AssignCwd}{wxfilenameassigncwd}\\ +\helpref{AssignDir}{wxfilenameassigndir}\\ +\helpref{AssignHomeDir}{wxfilenameassignhomedir}\\ +\helpref{AssignHomeTempFileName}{wxfilenameassigntempfilename}\\ +\helpref{operator $=$}{wxfilenameoperatorassign} -\membersection{File tests} +\membersection{File tests}\label{filetests} -Before doing the other tests you should use \helpref{IsOk}{wxfilenameisok} to -verify that the filename is well defined. If it is, -\helpref{FileExists}{wxfilenamefileexists} can be used to test if a file with -such name exists and \helpref{DirExists}{wxfilenamedirexists} - if a directory -with this name exists. +Before doing other tests, you should use \helpref{IsOk}{wxfilenameisok} to +verify that the filename is well defined. If it is,\rtfsp +\helpref{FileExists}{wxfilenamefileexists} can be used to test whether a file +with such name exists and \helpref{DirExists}{wxfilenamedirexists} can be used +to test for directory existence. File names should be compared using \helpref{SameAs}{wxfilenamesameas} method -or \helpref{$==$}{wxfilenameoperatorequal}. +or \helpref{operator $==$}{wxfilenameoperatorequal}. + +For testing basic access modes, you can use: + +\helpref{IsDirWritable}{wxfilenameisdirwritable}\\ +\helpref{IsDirReadable}{wxfilenameisdirreadable}\\ +\helpref{IsFileWritable}{wxfilenameisfilewritable}\\ +\helpref{IsFileReadable}{wxfilenameisfilereadable}\\ +\helpref{IsFileExecutable}{wxfilenameisfileexecutable} -\membersection{File name components} +\membersection{File name components}\label{filenamecomponents} -These functions allow to examine and modify the directories of the path: +These functions allow to examine and modify the individual directories of the +path: \helpref{AppendDir}{wxfilenameappenddir}\\ \helpref{InsertDir}{wxfilenameinsertdir}\\ \helpref{GetDirCount}{wxfilenamegetdircount} \helpref{PrependDir}{wxfilenameprependdir}\\ -\helpref{RemoveDir}{wxfilenameremovedir} +\helpref{RemoveDir}{wxfilenameremovedir}\\ +\helpref{RemoveLastDir}{wxfilenameremovelastdir} To change the components of the file name individually you can use the following functions: @@ -125,11 +146,13 @@ following functions: \helpref{HasName}{wxfilenamehasname}\\ \helpref{HasVolume}{wxfilenamehasvolume}\\ \helpref{SetExt}{wxfilenamesetext}\\ +\helpref{ClearExt}{wxfilenameclearext}\\ +\helpref{SetEmptyExt}{wxfilenamesetemptyext}\\ \helpref{SetName}{wxfilenamesetname}\\ \helpref{SetVolume}{wxfilenamesetvolume}\\ -\membersection{Operations} +\membersection{Operations}\label{filenameoperations} These methods allow to work with the file creation, access and modification times. Note that not all filesystems under all platforms implement these times @@ -195,6 +218,8 @@ assert failure in debug build). \func{void}{Assign}{\param{const wxString\& }{fullpath}, \param{wxPathFormat }{format = wxPATH\_NATIVE}} +\func{void}{Assign}{\param{const wxString\& }{volume}, \param{const wxString\& }{path}, \param{const wxString\& }{name}, \param{const wxString\& }{ext}, \param{bool }{hasExt}, \param{wxPathFormat }{format = wxPATH\_NATIVE}} + \func{void}{Assign}{\param{const wxString\& }{volume}, \param{const wxString\& }{path}, \param{const wxString\& }{name}, \param{const wxString\& }{ext}, \param{wxPathFormat }{format = wxPATH\_NATIVE}} \func{void}{Assign}{\param{const wxString\& }{path}, \param{const wxString\& }{name}, \param{wxPathFormat }{format = wxPATH\_NATIVE}} @@ -248,6 +273,18 @@ temporary file couldn't be created, the object is put into the\rtfsp Reset all components to default, uninitialized state. +\membersection{wxFileName::ClearExt}\label{wxfilenameclearext} + +\func{void}{SetClearExt}{\void} + +Removes the extension from the file name resulting in a +file name with no trailing dot. + +\wxheading{See also} + +\helpref{SetExt}{wxfilenamesetext} +\helpref{SetEmptyExt}{wxfilenamesetemptyext} + \membersection{wxFileName::CreateTempFileName}\label{wxfilenamecreatetempfilename} \func{static wxString}{CreateTempFileName}{\param{const wxString\& }{prefix}, \param{wxFile *}{fileTemp = {\tt NULL}}} @@ -324,7 +361,7 @@ function exists mainly for symmetry with \helpref{DirName}{wxfilenamedirname}. \func{static wxString}{GetCwd}{\param{const wxString\& }{volume = ""}} Retrieves the value of the current working directory on the specified volume. If -the volume is empty, the programs current working directory is returned for the +the volume is empty, the program's current working directory is returned for the current volume. \wxheading{Return value} @@ -411,7 +448,12 @@ Returns the last time the file was last modified. \constfunc{wxString}{GetName}{\void} -Returns the name part of the filename. +Returns the name part of the filename (without extension). + +\wxheading{See also} + +\helpref{GetFullName}{wxfilenamegetfullname} + \membersection{wxFileName::GetPath}\label{wxfilenamegetpath} @@ -469,6 +511,17 @@ same as \helpref{GetPathSeparators}{wxfilenamegetpathseparators} except for VMS path format where $]$ is used at the end of the path part. +\membersection{wxFileName::GetPathWithSep}\label{wxfilenamegetpathwithsep} + +\constfunc{wxString}{GetPathWithSep}{\param{wxPathFormat }{format = wxPATH\_NATIVE}} + +Returns the path with the trailing separator, useful for appending the name to +the given path. + +This is the same as calling \helpref{GetPath}{wxfilenamegetpath} +\texttt{(wxPATH\_GET\_VOLUME | wxPATH\_GET\_SEPARATOR, format)}. + + \membersection{wxFileName::GetShortPath}\label{wxfilenamegetshortpath} \constfunc{wxString}{GetShortPath}{\void} @@ -476,6 +529,40 @@ path format where $]$ is used at the end of the path part. Return the short form of the path (returns identity on non-Windows platforms). +\membersection{wxFileName::GetSize}\label{wxfilenamegetsize} + +\constfunc{wxULongLong}{GetSize}{\void} + +\func{static wxULongLong}{GetSize}{\param{const wxString\& }{filename}} + +Returns the size of this file (first form) or the size of the given file (second form). +If the file does not exist or its size could not be read (because e.g. the file is locked +by another process) the returned value is {\tt wxInvalidSize}. + + +\membersection{wxFileName::GetHumanReadableSize}\label{wxfilenamegethumanreadablesize} + +\constfunc{wxString}{GetHumanReadableSize}{\param{const wxString\& }{failmsg = "Not available"}, \param{int }{precision = 1}} + +\func{static wxString}{GetHumanReadableSize}{\param{const wxULongLong\& }{bytes}, \param{const wxString\& }{nullsize = "Not available"}, \param{int }{precision = 1}} + +Returns the size of this file (first form) or the given number of bytes (second form) +in a human-readable form. + +If the size could not be retrieved the {\tt failmsg} string is returned (first form). +If {\tt bytes} is {\tt wxInvalidSize} or zero, then {\tt nullsize} is returned (second form). + +In case of success, the returned string is a floating-point number with {\tt precision} decimal digits +followed by the size unit (B, kB, MB, GB, TB: respectively bytes, kilobytes, megabytes, gigabytes, terabytes). + + +\membersection{wxFileName::GetTempDir}\label{wxfilenamegettempdir} + +\func{static wxString}{GetTempDir}{\void} + +Returns the directory used for temporary files. + + \membersection{wxFileName::GetTimes}\label{wxfilenamegettimes} \constfunc{bool}{GetTimes}{\param{wxDateTime* }{dtAccess}, \param{wxDateTime* }{dtMod}, \param{wxDateTime* }{dtCreate}} @@ -500,7 +587,7 @@ needed. \constfunc{wxString}{GetVolume}{\void} -Returns the string containing the volume for this file name, mepty if it +Returns the string containing the volume for this file name, empty if it doesn't have one or if the file system doesn't support volumes at all (for example, Unix). @@ -535,7 +622,7 @@ Returns {\tt true} if a volume specifier is present. \membersection{wxFileName::InsertDir}\label{wxfilenameinsertdir} -\func{void}{InsertDir}{\param{int }{before}, \param{const wxString\& }{dir}} +\func{void}{InsertDir}{\param{size\_t }{before}, \param{const wxString\& }{dir}} Inserts a directory component before the zero-based position in the directory list. Please see \helpref{AppendDir}{wxfilenameappenddir} for important notes. @@ -555,6 +642,56 @@ Returns {\tt true} if this filename is absolute. Returns {\tt true} if the file names of this type are case-sensitive. +\membersection{wxFileName::IsDirReadable}\label{wxfilenameisdirreadable} + +\constfunc{bool}{IsDirReadable}{\void} + +\func{static bool}{IsDirReadable}{\param{const wxString\& }{dir}} + +Returns {\tt true} if the directory component of this instance (or given \arg{dir}) +is an existing directory and this process has read permissions on it. +Read permissions on a directory mean that you can list the directory contents but it +doesn't imply that you have read permissions on the files contained. + + +\membersection{wxFileName::IsDirWritable}\label{wxfilenameisdirwritable} + +\constfunc{bool}{IsDirWritable}{\void} + +\func{static bool}{IsDirWritable}{\param{const wxString\& }{dir}} + +Returns {\tt true} if the directory component of this instance (or given \arg{dir}) +is an existing directory and this process has write permissions on it. +Write permissions on a directory mean that you can create new files in the directory. + + +\membersection{wxFileName::IsFileExecutable}\label{wxfilenameisfileexecutable} + +\constfunc{bool}{IsFileExecutable}{\void} + +\func{static bool}{IsFileExecutable}{\param{const wxString\& }{file}} + +Returns {\tt true} if a file with this name exists and if this process has execute permissions on it. + + +\membersection{wxFileName::IsFileReadable}\label{wxfilenameisfilereadable} + +\constfunc{bool}{IsFileReadable}{\void} + +\func{static bool}{IsFileReadable}{\param{const wxString\& }{file}} + +Returns {\tt true} if a file with this name exists and if this process has read permissions on it. + + +\membersection{wxFileName::IsFileWritable}\label{wxfilenameisfilewritable} + +\constfunc{bool}{IsFileWritable}{\void} + +\func{static bool}{IsFileWritable}{\param{const wxString\& }{file}} + +Returns {\tt true} if a file with this name exists and if this process has write permissions on it. + + \membersection{wxFileName::IsOk}\label{wxfilenameisok} \constfunc{bool}{IsOk}{\void} @@ -589,6 +726,23 @@ directory or file really exists, you should use \helpref{DirExists}{wxfilenamedirexists} or \helpref{FileExists}{wxfilenamefileexists} for this. +\membersection{wxFileName::MacFindDefaultTypeAndCreator}\label{wxfilenamemacfinddefaulttypeandcreator} + +\func{static bool}{MacFindDefaultTypeAndCreator}{\param{const wxString\& }{ext}, \param{wxUint32* }{type}, \param{wxUint32* }{creator}} + +On Mac OS, gets the common type and creator for the given extension. + +\membersection{wxFileName::MacRegisterDefaultTypeAndCreator}\label{wxfilenamemacregisterdefaulttypeandcreator} + +\func{static void}{MacRegisterDefaultTypeAndCreator}{\param{const wxString\& }{ext}, \param{wxUint32 }{type}, \param{wxUint32 }{creator}} + +On Mac OS, registers application defined extensions and their default type and creator. + +\membersection{wxFileName::MacSetDefaultTypeAndCreator}\label{wxfilenamemacsetdefaulttypeandcreator} + +\func{bool}{MacSetDefaultTypeAndCreator}{\void} + +On Mac OS, looks up the appropriate type and creator from the registration and then sets it. \membersection{wxFileName::MakeAbsolute}\label{wxfilenamemakeabsolute} @@ -661,20 +815,25 @@ any or-combination of the following constants: \begin{twocollist} \twocolitem{{\bf wxPATH\_NORM\_ENV\_VARS}}{replace env vars with their values} -\twocolitem{{\bf wxPATH\_NORM\_DOTS}}{squeeze all .. and . and prepend cwd} -\twocolitem{{\bf wxPATH\_NORM\_TILDE}}{Unix only: replace ~ and ~user} -\twocolitem{{\bf wxPATH\_NORM\_CASE}}{if filesystem is case insensitive, transform to tolower case} -\twocolitem{{\bf wxPATH\_NORM\_ABSOLUTE}}{make the path absolute} +\twocolitem{{\bf wxPATH\_NORM\_DOTS}}{squeeze all .. and . when possible; if there are too many .. and thus they cannot be all removed, \false will be returned} +\twocolitem{{\bf wxPATH\_NORM\_CASE}}{if filesystem is case insensitive, transform to lower case} +\twocolitem{{\bf wxPATH\_NORM\_ABSOLUTE}}{make the path absolute prepending \arg{cwd}} \twocolitem{{\bf wxPATH\_NORM\_LONG}}{make the path the long form} \twocolitem{{\bf wxPATH\_NORM\_SHORTCUT}}{resolve if it is a shortcut (Windows only)} +\twocolitem{{\bf wxPATH\_NORM\_TILDE}}{replace ~ and ~user (Unix only)} \twocolitem{{\bf wxPATH\_NORM\_ALL}}{all of previous flags except \texttt{wxPATH\_NORM\_CASE}} \end{twocollist} }% \docparam{cwd}{If not empty, this directory will be used instead of current -working directory in normalization.} +working directory in normalization (see wxPATH\_NORM\_ABSOLUTE).} + +\docparam{format}{The file name format to use when processing the paths, native by default.} + -\docparam{format}{The file name format, native by default.} +\wxheading{Return value} + +\true if normalization was successfully or \false otherwise. \membersection{wxFileName::PrependDir}\label{wxfilenameprependdir} @@ -688,9 +847,20 @@ Prepends a directory to the file path. Please see \membersection{wxFileName::RemoveDir}\label{wxfilenameremovedir} -\func{void}{RemoveDir}{\param{int }{pos}} +\func{void}{RemoveDir}{\param{size\_t }{pos}} + +Removes the specified directory component from the path. + +\wxheading{See also} + +\helpref{GetDirCount}{wxfilenamegetdircount} + + +\membersection{wxFileName::RemoveLastDir}\label{wxfilenameremovelastdir} -Removes a directory name. +\func{void}{RemoveLastDir}{\void} + +Removes last directory component from the path. \membersection{wxFileName::Rmdir}\label{wxfilenamermdir} @@ -722,8 +892,28 @@ Changes the current working directory. \func{void}{SetExt}{\param{const wxString\& }{ext}} -Sets the extension of this file name. +Sets the extension of the file name. Setting an empty string +as the extension will remove the extension resulting in a file +name without a trailing dot, unlike a call to +\helpref{SetEmptyExt}{wxfilenamesetemptyext}. + +\wxheading{See also} +\helpref{SetEmptyExt}{wxfilenamesetemptyext} +\helpref{ClearExt}{wxfilenameclearext} + +\membersection{wxFileName::SetEmptyExt}\label{wxfilenamesetemptyext} + +\func{void}{SetEmptyExt}{\void} + +Sets the extension of the file name to be an empty extension. +This is different from having no extension at all as the file +name will have a trailing dot after a call to this method. + +\wxheading{See also} + +\helpref{SetExt}{wxfilenamesetext} +\helpref{ClearExt}{wxfilenameclearext} \membersection{wxFileName::SetFullName}\label{wxfilenamesetfullname} @@ -736,7 +926,11 @@ The full name is the file name and extension (but without the path). \func{void}{SetName}{\param{const wxString\& }{name}} -Sets the name. +Sets the name part (without extension). + +\wxheading{See also} + +\helpref{SetFullName}{wxfilenamesetfullname} \membersection{wxFileName::SetTimes}\label{wxfilenamesettimes} @@ -755,6 +949,8 @@ Sets the volume specifier. \membersection{wxFileName::SplitPath}\label{wxfilenamesplitpath} +\func{static void}{SplitPath}{\param{const wxString\& }{fullpath}, \param{wxString* }{volume}, \param{wxString* }{path}, \param{wxString* }{name}, \param{wxString* }{ext}, \param{bool }{*hasExt = \texttt{NULL}}, \param{wxPathFormat }{format = wxPATH\_NATIVE}} + \func{static void}{SplitPath}{\param{const wxString\& }{fullpath}, \param{wxString* }{volume}, \param{wxString* }{path}, \param{wxString* }{name}, \param{wxString* }{ext}, \param{wxPathFormat }{format = wxPATH\_NATIVE}} \func{static void}{SplitPath}{\param{const wxString\& }{fullpath}, \param{wxString* }{path}, \param{wxString* }{name}, \param{wxString* }{ext}, \param{wxPathFormat }{format = wxPATH\_NATIVE}} @@ -771,6 +967,10 @@ without leading dot. All three of them may be empty if the corresponding component is. The old contents of the strings pointed to by these parameters will be overwritten in any case (if the pointers are not {\tt NULL}). +Note that for a filename ``foo.'' the extension is present, as indicated by the +trailing dot, but empty. If you need to cope with such cases, you should use +\arg{hasExt} instead of relying on testing whether \arg{ext} is empty or not. + \membersection{wxFileName::SplitVolume}\label{wxfilenamesplitvolume}