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Annotation of micropolis/src/tclx/tclsrc/pushd.tcl, revision 1.1.1.1

1.1       root        1: #
                      2: # pushd.tcl --
                      3: #
                      4: # C-shell style directory stack procs.
                      5: #
                      6: #------------------------------------------------------------------------------
                      7: # Copyright 1992 Karl Lehenbauer and Mark Diekhans.
                      8: #
                      9: # Permission to use, copy, modify, and distribute this software and its
                     10: # documentation for any purpose and without fee is hereby granted, provided
                     11: # that the above copyright notice appear in all copies.  Karl Lehenbauer and
                     12: # Mark Diekhans make no representations about the suitability of this
                     13: # software for any purpose.  It is provided "as is" without express or
                     14: # implied warranty.
                     15: #------------------------------------------------------------------------------
                     16: # $Id: pushd.tcl,v 2.0 1992/10/16 04:52:06 markd Rel $
                     17: #------------------------------------------------------------------------------
                     18: #
                     19: 
                     20: #@package: TclX-directory_stack pushd popd dirs
                     21: 
                     22: global TCLENV(dirPushList)
                     23: 
                     24: set TCLENV(dirPushList) ""
                     25: 
                     26: proc pushd {args} {
                     27:     global TCLENV
                     28: 
                     29:     if {[llength $args] > 1} {
                     30:         error "bad # args: pushd [dir_to_cd_to]"
                     31:     }
                     32:     set TCLENV(dirPushList) [linsert $TCLENV(dirPushList) 0 [pwd]]
                     33: 
                     34:     if {[llength $args] != 0} {
                     35:         cd [glob $args]
                     36:     }
                     37: }
                     38: 
                     39: proc popd {} {
                     40:     global TCLENV
                     41: 
                     42:     if [llength $TCLENV(dirPushList)] {
                     43:         cd [lvarpop TCLENV(dirPushList)]
                     44:         pwd
                     45:     } else {
                     46:         error "directory stack empty"
                     47:     }
                     48: }
                     49: 
                     50: proc dirs {} { 
                     51:     global TCLENV
                     52:     echo [pwd] $TCLENV(dirPushList)
                     53: }

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