Tcl_JoinPath man page on Minix

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Tcl_SplitPath(3)	    Tcl Library Procedures	      Tcl_SplitPath(3)

______________________________________________________________________________

NAME
       Tcl_SplitPath,  Tcl_JoinPath,  Tcl_GetPathType  -  manipulate platform-
       dependent file paths

SYNOPSIS
       #include <tcl.h>

       Tcl_SplitPath(path, argcPtr, argvPtr)

       char *
       Tcl_JoinPath(argc, argv, resultPtr)

       Tcl_PathType
       Tcl_GetPathType(path)

ARGUMENTS
       CONST char * CONST	  *argvPtr(in)
					    File path in  a  form  appropriate
					    for	 the current platform (see the
					    filename manual entry for  accept‐
					    able forms for path names).

       int	     *argcPtr	  (out)	    Filled in with number of path ele‐
					    ments in path.

       CONST char    ***argvPtr	  (out)	    *argvPtr will be  filled  in  with
					    the	 address of an array of point‐
					    ers to the strings	that  are  the
					    extracted elements of path.	 There
					    will be *argcPtr valid entries  in
					    the	 array,	 followed  by  a  NULL
					    entry.

       int	     argc	  (in)	    Number of elements in argv.

       CONST char * CONST	  *argv(in) Array of path  elements  to	 merge
					    together into a single path.

       Tcl_DString   *resultPtr	  (in/out)  A	pointer	  to   an  initialized
					    Tcl_DString to which the result of
					    Tcl_JoinPath will be appended.
_________________________________________________________________

DESCRIPTION
       These  procedures have been superceded by the objectified procedures in
       the FileSystem man page, which are more efficient.

       These procedures may be used to disassemble and reassemble  file	 paths
       in  a  platform	independent manner: they provide C-level access to the
       same functionality as the file split, file join, and file pathtype com‐
       mands.

       Tcl_SplitPath breaks a path into its constituent elements, returning an
       array of pointers to the elements using argcPtr and argvPtr.  The  area
       of  memory pointed to by *argvPtr is dynamically allocated; in addition
       to the array of pointers, it also holds copies of  all  the  path  ele‐
       ments.	It is the caller's responsibility to free all of this storage.
       For example, suppose that you have called Tcl_SplitPath with  the  fol‐
       lowing code:
	      int argc;
	      char *path;
	      char **argv;
	      ...
	      Tcl_SplitPath(string, &argc, &argv);
       Then  you  should eventually free the storage with a call like the fol‐
       lowing:
	      Tcl_Free((char *) argv);

       Tcl_JoinPath is the inverse of Tcl_SplitPath: it takes a collection  of
       path elements given by argc and argv and generates a result string that
       is a properly constructed  path.	 The  result  string  is  appended  to
       resultPtr.  ResultPtr must refer to an initialized Tcl_DString.

       If  the	result	of Tcl_SplitPath is passed to Tcl_JoinPath, the result
       will refer to the same location, but may not be in the same form.  This
       is because Tcl_SplitPath and Tcl_JoinPath eliminate duplicate path sep‐
       arators and return a normalized form for each platform.

       Tcl_GetPathType	returns	 the  type  of	the  specified	 path,	 where
       Tcl_PathType   is   one	of  TCL_PATH_ABSOLUTE,	TCL_PATH_RELATIVE,  or
       TCL_PATH_VOLUME_RELATIVE.  See the filename manual entry for a descrip‐
       tion of the path types for each platform.

KEYWORDS
       file, filename, join, path, split, type

Tcl				      7.5		      Tcl_SplitPath(3)
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