Annotation of gforth/kernel/files.fs, revision 1.25

1.1       anton       1: \ File specifiers                                       11jun93jaw
                      2: 
1.24      anton       3: \ Copyright (C) 1995,1996,1997,1998,2000,2003,2006 Free Software Foundation, Inc.
1.1       anton       4: 
                      5: \ This file is part of Gforth.
                      6: 
                      7: \ Gforth is free software; you can redistribute it and/or
                      8: \ modify it under the terms of the GNU General Public License
1.25    ! anton       9: \ as published by the Free Software Foundation, either version 3
1.1       anton      10: \ of the License, or (at your option) any later version.
                     11: 
                     12: \ This program is distributed in the hope that it will be useful,
                     13: \ but WITHOUT ANY WARRANTY; without even the implied warranty of
                     14: \ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
                     15: \ GNU General Public License for more details.
                     16: 
                     17: \ You should have received a copy of the GNU General Public License
1.25    ! anton      18: \ along with this program. If not, see http://www.gnu.org/licenses/.
1.1       anton      19: 
1.9       anton      20: 4 Constant w/o ( -- fam ) \ file       w-o
                     21: 2 Constant r/w ( -- fam ) \ file       r-w
                     22: 0 Constant r/o ( -- fam ) \ file       r-o
1.1       anton      23: 
1.9       anton      24: : bin ( fam1 -- fam2 ) \ file
1.1       anton      25:     1 or ;
                     26: 
                     27: \ BIN WRITE-LINE                                        11jun93jaw
                     28: 
                     29: : write-line ( c-addr u fileid -- ior ) \ file
                     30:     dup >r write-file
                     31:     ?dup IF
                     32:        r> drop EXIT
                     33:     THEN
1.8       anton      34:     newline r> write-file ;
1.1       anton      35: 
                     36: \ include-file                                         07apr93py
                     37: 
1.16      pazsan     38: has? new-input 0= [IF]
1.21      anton      39: : loadfilename>r ( addr1 u1 -- R: addr2 u2 )
                     40:     r> loadfilename 2@ 2>r >r
                     41:     loadfilename 2! ;
                     42: 
                     43: : r>loadfilename ( R: addr u -- )
                     44:     r> 2r> loadfilename 2! >r ;
                     45: 
1.1       anton      46: : push-file  ( -- )  r>
1.13      pazsan     47:     #fill-bytes @ >r
                     48:     loadline @    >r
                     49:     loadfile @    >r
                     50:     blk @         >r
                     51:     tibstack @    >r
                     52:     >tib @        >r
                     53:     #tib @        >r
                     54:     >in @         >r  >r
1.3       pazsan     55:     >tib @ tibstack @ = IF  #tib @ tibstack +!  THEN
                     56:     tibstack @ >tib ! ;
1.1       anton      57: 
                     58: : pop-file   ( throw-code -- throw-code )
                     59:   dup IF
1.23      anton      60:       input-error-data >error
1.1       anton      61:   THEN
                     62:   r>
1.13      pazsan     63:   r> >in         !
                     64:   r> #tib        !
                     65:   r> >tib        !
                     66:   r> tibstack    !
                     67:   r> blk         !
                     68:   r> loadfile    !
                     69:   r> loadline    !
                     70:   r> #fill-bytes !  >r ;
1.1       anton      71: 
                     72: : read-loop ( i*x -- j*x )
                     73:   BEGIN  refill  WHILE  interpret  REPEAT ;
                     74: 
1.10      anton      75: : include-file1 ( i*x wfileid -- j*x ior1 ior2 )
1.6       crook      76:     \G Interpret (process using the text interpreter) the contents of
1.7       crook      77:     \G the file @var{wfileid}.
1.4       anton      78:     push-file  loadfile !
                     79:     0 loadline ! blk off  ['] read-loop catch
                     80:     loadfile @ close-file swap 2dup or
1.10      anton      81:     pop-file  drop ;
                     82: 
                     83: : include-file2 ( i*x wfileid -- j*x )
                     84:     \ like include-file, but does not update loadfile#
                     85:     include-file1 throw throw ;
1.1       anton      86: 
1.10      anton      87: : include-file ( i*x wfileid -- j*x ) \ file
1.21      anton      88:     s" *a file*" loadfilename>r
1.10      anton      89:     include-file1
1.21      anton      90:     r>loadfilename
1.10      anton      91:     throw throw ;
1.16      pazsan     92: [THEN]
1.10      anton      93:     
1.1       anton      94: \ additional words only needed if there is file support
                     95: 
1.17      jwilke     96: Redefinitions-start
1.2       jwilke     97: 
1.1       anton      98: : ( ( compilation 'ccc<close-paren>' -- ; run-time -- ) \ core,file    paren
                     99:     loadfile @ 0= IF  postpone (  EXIT  THEN
                    100:     BEGIN
                    101:        >in @
                    102:        [char] ) parse nip
                    103:        >in @ rot - = \ is there no delimter?
                    104:     WHILE
                    105:        refill 0=
                    106:        IF
                    107:            warnings @
                    108:            IF
                    109:                ." warning: ')' missing" cr
                    110:            THEN
                    111:            EXIT
                    112:        THEN
                    113:     REPEAT ; immediate
                    114: 
1.17      jwilke    115: Redefinitions-end

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