File:
[gforth] /
gforth /
kernel /
io.fs
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1.7:
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Fri Dec 11 22:54:31 1998 UTC (25 years, 4 months ago) by
pazsan
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MAIN
CVS tags:
v0-4-0,
HEAD
Added further options to shrink a kernel down
Cleaned up conditional primitives (works now for C-generated part, too)
Cleaned up mach files for embedded architectures
Cleaned up options in the kernel
1: \ input output basics (extra since) 02mar97jaw
2:
3: \ Copyright (C) 1995,1996,1997,1998 Free Software Foundation, Inc.
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
19: \ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20:
21: \ Output 13feb93py
22:
23: has? os [IF]
24: 0 Value outfile-id ( -- file-id ) \ gforth
25: 0 Value infile-id ( -- file-id ) \ gforth
26:
27: : (type) ( c-addr u -- ) \ gforth
28: outfile-id write-file drop \ !! use ?DUP-IF THROW ENDIF instead of DROP ?
29: ;
30:
31: : (emit) ( c -- ) \ gforth
32: outfile-id emit-file drop \ !! use ?DUP-IF THROW ENDIF instead of DROP ?
33: ;
34:
35: : (key) ( -- c ) \ gforth
36: infile-id key-file ;
37:
38: : (key?) ( -- flag ) \ gforth
39: infile-id key?-file ;
40: [THEN]
41:
42: undef-words
43:
44: Defer type ( c-addr u -- ) \ core
45: : (type) BEGIN dup WHILE
46: >r dup c@ (emit) 1+ r> 1- REPEAT 2drop ;
47:
48: [IFDEF] (type) ' (type) IS Type [THEN]
49:
50: Defer emit ( c -- ) \ core
51: : (emit) ( c -- ) \ gforth
52: 0 emit-file drop \ !! use ?DUP-IF THROW ENDIF instead of DROP ?
53: ;
54:
55: [IFDEF] (emit) ' (emit) IS emit [THEN]
56:
57: Defer key ( -- c ) \ core
58: : (key) ( -- c ) \ gforth
59: 0 key-file ;
60:
61: [IFDEF] (key) ' (key) IS key [THEN]
62:
63: Defer key? ( -- flag ) \ core
64: : (key?) ( -- flag ) \ gforth
65: 0 key?-file ;
66:
67: [IFDEF] (key?) ' (key?) IS key? [THEN]
68:
69: all-words
70:
71: : (.") "lit count type ;
72: : (S") "lit count ;
73:
74: \ Input 13feb93py
75:
76: 07 constant #bell ( -- c ) \ gforth
77: 08 constant #bs ( -- c ) \ gforth
78: 09 constant #tab ( -- c ) \ gforth
79: 7F constant #del ( -- c ) \ gforth
80: 0D constant #cr ( -- c ) \ gforth
81: \ the newline key code
82: 0C constant #ff ( -- c ) \ gforth
83: 0A constant #lf ( -- c ) \ gforth
84:
85: : bell #bell emit [ has? os [IF] ] outfile-id flush-file drop [ [THEN] ] ;
86: : cr ( -- ) \ core
87: \ emit a newline
88: [ has? crlf [IF] ] #cr emit #lf emit
89: [ [ELSE] ] #lf emit
90: [ [THEN] ]
91: ;
92:
93: : space bl emit ;
94: has? ec [IF]
95: : spaces 0 max 0 ?DO space LOOP ;
96: : backspaces 0 max 0 ?DO #bs emit LOOP ;
97: [ELSE]
98: \ space spaces 21mar93py
99: decimal
100: Create spaces ( u -- ) \ core
101: bl 80 times \ times from target compiler! 11may93jaw
102: DOES> ( u -- )
103: swap
104: 0 max 0 ?DO I' I - &80 min 2dup type +LOOP drop ;
105: Create backspaces
106: 08 80 times \ times from target compiler! 11may93jaw
107: DOES> ( u -- )
108: swap
109: 0 max 0 ?DO I' I - &80 min 2dup type +LOOP drop ;
110: hex
111: [THEN]
112:
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