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Annotation of gforth/script.fs, revision 1.5

1.5     ! anton       1: \ Copyright (C) 2001,2003,2007 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
1.4       anton       7: \ as published by the Free Software Foundation, either version 3
1.2       anton       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
1.4       anton      16: \ along with this program. If not, see http://www.gnu.org/licenses/.
1.2       anton      17: 
1.1       pazsan     18: \ scripting extensions
                     19: 
                     20: : sh-eval ( addr u -- )
                     21:     \G evaluate string + rest of command line
                     22:     2dup 2>r >in @ >r negate
                     23:     source >in @ 1- /string + c@ bl <> + >in +! drop sh
                     24:     $? IF  r> >in ! 2r> defers interpreter-notfound
                     25:     ELSE  rdrop 2rdrop  THEN ;
                     26: ' sh-eval IS interpreter-notfound
                     27: 
                     28: 2Variable sh$  0. sh$ 2!
                     29: : sh-get ( addr u -- addr' u' )
                     30:     \G open command addr u, and read in the result
                     31:     sh$ free-mem-var
                     32:     r/o open-pipe throw dup >r slurp-fid
                     33:     r> close-pipe throw to $? 2dup sh$ 2! ;
                     34: 
                     35: :noname '` parse sh-get ;
                     36: :noname '` parse postpone SLiteral postpone sh-get ;
                     37: interpret/compile: s`