Tcl_SplitPath (3)

SYNOPSIS

#include <tcl.h>
Tcl_SplitPath(path, argcPtr, argvPtr)
char *
Tcl_JoinPath(argc, argv, resultPtr)
Tcl_PathType
Tcl_GetPathType(path)

ARGUMENTS

Tcl_DString ***argvPtr char *path in File path in a form appropriate for the current platform (see the filename manual entry for acceptable forms for path names). int *argcPtr out Filled in with number of path elements in path. char ***argvPtr out *argvPtr will be filled in with the address of an array of pointers 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. char **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 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 commands.

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 elements. It is the caller's responsibility to free all of this storage. For example, suppose that you have called Tcl_SplitPath with the following code: int argc; char *path; char **argv; ... Tcl_SplitPath(string, &argc, &argv); Then you should eventually free the storage with a call like the following: 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 separators 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 description of the path types for each platform.

KEYWORDS

file, filename, join, path, split, type '\" '\" Copyright (c) 1995-1996 Sun Microsystems, Inc. '\" '\" See the file "license.terms" for information on usage and redistribution '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES. '\" '\" RCS: @(#) $Id: StaticPkg.3,v 1.2 1998/09/14 18:39:50 stanton Exp $ '\" '\" The definitions below are for supplemental macros used in Tcl/Tk '\" manual entries. '\" '\" .AP type name in/out ?indent? '\" Start paragraph describing an argument to a library procedure. '\" type is type of argument (int, etc.), in/out is either "in", "out", '\" or "in/out" to describe whether procedure reads or modifies arg, '\" and indent is equivalent to second arg of .IP (shouldn't ever be '\" needed; use .AS below instead) '\" '\" .AS ?type? ?name? '\" Give maximum sizes of arguments for setting tab stops. Type and '\" name are examples of largest possible arguments that will be passed '\" to .AP later. If args are omitted, default tab stops are used. '\" '\" .BS '\" Start box enclosure. From here until next .BE, everything will be '\" enclosed in one large box. '\" '\" .BE '\" End of box enclosure. '\" '\" .CS '\" Begin code excerpt. '\" '\" .CE '\" End code excerpt. '\" '\" .VS ?version? ?br? '\" Begin vertical sidebar, for use in marking newly-changed parts '\" of man pages. The first argument is ignored and used for recording '\" the version when the .VS was added, so that the sidebars can be '\" found and removed when they reach a certain age. If another argument '\" is present, then a line break is forced before starting the sidebar. '\" '\" .VE '\" End of vertical sidebar. '\" '\" .DS '\" Begin an indented unfilled display. '\" '\" .DE '\" End of indented unfilled display. '\" '\" .SO '\" Start of list of standard options for a Tk widget. The '\" options follow on successive lines, in four columns separated '\" by tabs. '\" '\" .SE '\" End of list of standard options for a Tk widget. '\" '\" .OP cmdName dbName dbClass '\" Start of description of a specific option. cmdName gives the '\" option's name as specified in the class command, dbName gives '\" the option's name in the option database, and dbClass gives '\" the option's class in the option database. '\" '\" .UL arg1 arg2 '\" Print arg1 underlined, then print arg2 normally. '\" '\" RCS: @(#) $Id: man.macros,v 1.2 1998/09/14 18:39:54 stanton Exp $ '\" '\" # Set up traps and other miscellaneous stuff for Tcl/Tk man pages. t .wh -1.3i ^B ^l \n(.l b '\" # Start an argument description AP !"\\$4"" .TP \\$4 \{\ !"\\$2"" .TP \\n()Cu .TP 15