Tcl_SplitPath(3) Tcl Library Procedures Tcl_SplitPath(3)
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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 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 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.
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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These procedures have been superceded by the objectified procedures in the FileSystem man page, which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 man-ner: manner:
ner: 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 ele-ments elements
ments 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_ABSO-LUTE, TCL_PATH_ABSOLUTE,
LUTE, TCL_PATH_RELATIVE, or TCL_PATH_VOLUME_RELATIVE. See the filename manual entry for a descrip-tion description
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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