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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 *path (in)			  File path in a  form	appro‐
						  priate for the current plat‐
						  form (see the filename  man‐
						  ual	entry  for  acceptable
						  forms for path names).

       int *argcPtr (out)			  Filled  in  with  number  of
						  path elements in path.

       const char ***argvPtr (out)		  *argvPtr  will  be filled in
						  with the address of an array
						  of  pointers	to the strings
						  that are the extracted  ele‐
						  ments	 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       These  procedures have been superceded by the objectified procedures in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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