Annotation of gforth/script.fs, revision 1.3

1.3     ! anton       1: \ Copyright (C) 2001,2003 Free Software Foundation, Inc.
1.2       anton       2: 
                      3: \ This file is part of Gforth.
                      4: 
                      5: \ Gforth is free software; you can redistribute it and/or
                      6: \ modify it under the terms of the GNU General Public License
                      7: \ as published by the Free Software Foundation; either version 2
                      8: \ of the License, or (at your option) any later version.
                      9: 
                     10: \ This program is distributed in the hope that it will be useful,
                     11: \ but WITHOUT ANY WARRANTY; without even the implied warranty of
                     12: \ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
                     13: \ GNU General Public License for more details.
                     14: 
                     15: \ You should have received a copy of the GNU General Public License
                     16: \ along with this program; if not, write to the Free Software
                     17: \ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
                     18: 
1.1       pazsan     19: \ scripting extensions
                     20: 
                     21: : sh-eval ( addr u -- )
                     22:     \G evaluate string + rest of command line
                     23:     2dup 2>r >in @ >r negate
                     24:     source >in @ 1- /string + c@ bl <> + >in +! drop sh
                     25:     $? IF  r> >in ! 2r> defers interpreter-notfound
                     26:     ELSE  rdrop 2rdrop  THEN ;
                     27: ' sh-eval IS interpreter-notfound
                     28: 
                     29: 2Variable sh$  0. sh$ 2!
                     30: : sh-get ( addr u -- addr' u' )
                     31:     \G open command addr u, and read in the result
                     32:     sh$ free-mem-var
                     33:     r/o open-pipe throw dup >r slurp-fid
                     34:     r> close-pipe throw to $? 2dup sh$ 2! ;
                     35: 
                     36: :noname '` parse sh-get ;
                     37: :noname '` parse postpone SLiteral postpone sh-get ;
                     38: interpret/compile: s`

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