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Annotation of gforth/kernel/files.fs, revision 1.22

1.1       anton       1: \ File specifiers                                       11jun93jaw
                      2: 
1.22    ! anton       3: \ Copyright (C) 1995,1996,1997,1998,2000,2003 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
                      9: \ as published by the Free Software Foundation; either version 2
                     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
                     18: \ along with this program; if not, write to the Free Software
1.15      anton      19: \ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
1.1       anton      20: 
1.9       anton      21: 4 Constant w/o ( -- fam ) \ file       w-o
                     22: 2 Constant r/w ( -- fam ) \ file       r-w
                     23: 0 Constant r/o ( -- fam ) \ file       r-o
1.1       anton      24: 
1.9       anton      25: : bin ( fam1 -- fam2 ) \ file
1.1       anton      26:     1 or ;
                     27: 
                     28: \ BIN WRITE-LINE                                        11jun93jaw
                     29: 
                     30: : write-line ( c-addr u fileid -- ior ) \ file
                     31:     dup >r write-file
                     32:     ?dup IF
                     33:        r> drop EXIT
                     34:     THEN
1.8       anton      35:     newline r> write-file ;
1.1       anton      36: 
                     37: \ include-file                                         07apr93py
                     38: 
1.16      pazsan     39: has? new-input 0= [IF]
1.21      anton      40: : loadfilename>r ( addr1 u1 -- R: addr2 u2 )
                     41:     r> loadfilename 2@ 2>r >r
                     42:     loadfilename 2! ;
                     43: 
                     44: : r>loadfilename ( R: addr u -- )
                     45:     r> 2r> loadfilename 2! >r ;
                     46: 
1.1       anton      47: : push-file  ( -- )  r>
1.13      pazsan     48:     #fill-bytes @ >r
                     49:     loadline @    >r
                     50:     loadfile @    >r
                     51:     blk @         >r
                     52:     tibstack @    >r
                     53:     >tib @        >r
                     54:     #tib @        >r
                     55:     >in @         >r  >r
1.3       pazsan     56:     >tib @ tibstack @ = IF  #tib @ tibstack +!  THEN
                     57:     tibstack @ >tib ! ;
1.1       anton      58: 
                     59: : pop-file   ( throw-code -- throw-code )
                     60:   dup IF
1.16      pazsan     61:          source >in @ sourceline# sourcefilename >error
1.1       anton      62:   THEN
                     63:   r>
1.13      pazsan     64:   r> >in         !
                     65:   r> #tib        !
                     66:   r> >tib        !
                     67:   r> tibstack    !
                     68:   r> blk         !
                     69:   r> loadfile    !
                     70:   r> loadline    !
                     71:   r> #fill-bytes !  >r ;
1.1       anton      72: 
                     73: : read-loop ( i*x -- j*x )
                     74:   BEGIN  refill  WHILE  interpret  REPEAT ;
                     75: 
1.10      anton      76: : include-file1 ( i*x wfileid -- j*x ior1 ior2 )
1.6       crook      77:     \G Interpret (process using the text interpreter) the contents of
1.7       crook      78:     \G the file @var{wfileid}.
1.4       anton      79:     push-file  loadfile !
                     80:     0 loadline ! blk off  ['] read-loop catch
                     81:     loadfile @ close-file swap 2dup or
1.10      anton      82:     pop-file  drop ;
                     83: 
                     84: : include-file2 ( i*x wfileid -- j*x )
                     85:     \ like include-file, but does not update loadfile#
                     86:     include-file1 throw throw ;
1.1       anton      87: 
1.10      anton      88: : include-file ( i*x wfileid -- j*x ) \ file
1.21      anton      89:     s" *a file*" loadfilename>r
1.10      anton      90:     include-file1
1.21      anton      91:     r>loadfilename
1.10      anton      92:     throw throw ;
1.16      pazsan     93: [THEN]
1.10      anton      94:     
1.1       anton      95: \ additional words only needed if there is file support
                     96: 
1.17      jwilke     97: Redefinitions-start
1.2       jwilke     98: 
1.1       anton      99: : ( ( compilation 'ccc<close-paren>' -- ; run-time -- ) \ core,file    paren
                    100:     loadfile @ 0= IF  postpone (  EXIT  THEN
                    101:     BEGIN
                    102:        >in @
                    103:        [char] ) parse nip
                    104:        >in @ rot - = \ is there no delimter?
                    105:     WHILE
                    106:        refill 0=
                    107:        IF
                    108:            warnings @
                    109:            IF
                    110:                ." warning: ')' missing" cr
                    111:            THEN
                    112:            EXIT
                    113:        THEN
                    114:     REPEAT ; immediate
                    115: 
1.17      jwilke    116: Redefinitions-end