Tcl_Concat(3TCL) Tcl Library Procedures Tcl_Concat(3TCL)__________________________________________________________________________________________________________________________________________________NAME
Tcl_Concat - concatenate a collection of strings
SYNOPSIS
#include <tcl.h>
CONST char *
Tcl_Concat(argc, argv)
ARGUMENTS
int argc (in) Number of strings.
CONST char * CONST argv[](in)
Array of strings to concatenate. Must have argc entries.
_________________________________________________________________DESCRIPTION
Tcl_Concat is a utility procedure used by several of the Tcl commands. Given a collection of strings, it concatenates them together into a
single string, with the original strings separated by spaces. This procedure behaves differently than Tcl_Merge, in that the arguments are
simply concatenated: no effort is made to ensure proper list structure. However, in most common usage the arguments will all be proper
lists themselves; if this is true, then the result will also have proper list structure.
Tcl_Concat eliminates leading and trailing white space as it copies strings from argv to the result. If an element of argv consists of
nothing but white space, then that string is ignored entirely. This white-space removal was added to make the output of the concat command
cleaner-looking.
The result string is dynamically allocated using Tcl_Alloc; the caller must eventually release the space by calling Tcl_Free. |
SEE ALSO |
Tcl_ConcatObj |
KEYWORDS |
concatenate, strings |
ATTRIBUTES |
See attributes(5) for descriptions of the following attributes: |
+--------------------+-----------------+ ||
| ATTRIBUTE TYPE | ATTRIBUTE VALUE | ||
+--------------------+-----------------+ ||
|Availability | SUNWTcl | ||
+--------------------+-----------------+ ||
|Interface Stability | Uncommitted | ||
+--------------------+-----------------+ ||
NOTES |
Source for Tcl is available on http://opensolaris.org. |
Tcl 7.5 Tcl_Concat(3TCL)
Check Out this Related Man Page
Tcl_SplitPath(3TCL) Tcl Library Procedures Tcl_SplitPath(3TCL)__________________________________________________________________________________________________________________________________________________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.
_________________________________________________________________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 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_VOL-
UME_RELATIVE. See the filename manual entry for a description of the path types for each platform.
KEYWORDS
file, filename, join, path, split, type
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+--------------------+-----------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+--------------------+-----------------+
|Availability | SUNWTcl |
+--------------------+-----------------+
|Interface Stability | Uncommitted |
+--------------------+-----------------+
NOTES
Source for Tcl is available on http://opensolaris.org.
Tcl 7.5 Tcl_SplitPath(3TCL)