DOKK / manpages / debian 12 / tcl8.6-doc / Tcl_TranslateFileName.3tcl.en
Tcl_TranslateFileName(3tcl) Tcl Library Procedures Tcl_TranslateFileName(3tcl) 







Tcl_TranslateFileName - convert file name to native form and
    replace tilde with home directory








#include <tcl.h>

char *
Tcl_TranslateFileName(interp, name, bufferPtr)









  
Tcl_Interp *interp (in)

  
Interpreter in which to report an error, if any.

  
const char *name (in)

  
File name, which may start with a “~”.

  
Tcl_DString *bufferPtr (in/out)

  
If needed, this dynamic string is used to store the new file name. At the
      time of the call it should be uninitialized or free. The caller must
      eventually call Tcl_DStringFree to free up anything stored here.
    
    

    

  










This utility procedure translates a file name to a
    platform-specific form which, after being converted to the appropriate
    encoding, is suitable for passing to the local operating system. In
    particular, it converts network names into native form and does tilde
    substitution.


However, with the advent of the newer
    Tcl_FSGetNormalizedPath and Tcl_FSGetNativePath, there is no
    longer any need to use this procedure. In particular,
    Tcl_FSGetNativePath performs all the necessary translation and
    encoding conversion, is virtual-filesystem aware, and caches the native
    result for faster repeated calls. Finally Tcl_FSGetNativePath does
    not require you to free anything afterwards.


If Tcl_TranslateFileName has to do tilde substitution or
    translate the name then it uses the dynamic string at *bufferPtr to
    hold the new string it generates. After Tcl_TranslateFileName returns
    a non-NULL result, the caller must eventually invoke Tcl_DStringFree
    to free any information placed in *bufferPtr. The caller need not
    know whether or not Tcl_TranslateFileName actually used the string;
    Tcl_TranslateFileName initializes *bufferPtr even if it does
    not use it, so the call to Tcl_DStringFree will be safe in either
    case.


If an error occurs (e.g. because there was no user by the given
    name) then NULL is returned and an error message will be left in the
    interpreter's result. When an error occurs, Tcl_TranslateFileName
    frees the dynamic string itself so that the caller need not call
    Tcl_DStringFree.


The caller is responsible for making sure that the interpreter's
    result has its default empty value when Tcl_TranslateFileName is
    invoked.








filename(3tcl)








file name, home directory, tilde, translate, user







  

    8.1
    Tcl