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| 1 : | anton | 1.1 | \ input output basics (extra since) 02mar97jaw |
| 2 : | |||
| 3 : | anton | 1.24 | \ Copyright (C) 1995,1996,1997,1998,2000,2003 Free Software Foundation, Inc. |
| 4 : | anton | 1.1 | |
| 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 : | anton | 1.21 | \ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA. |
| 20 : | anton | 1.1 | |
| 21 : | jwilke | 1.12 | require ./basics.fs |
| 22 : | |||
| 23 : | jwilke | 1.2 | \ Output 13feb93py |
| 24 : | |||
| 25 : | jwilke | 1.3 | has? os [IF] |
| 26 : | jwilke | 1.2 | 0 Value outfile-id ( -- file-id ) \ gforth |
| 27 : | pazsan | 1.5 | 0 Value infile-id ( -- file-id ) \ gforth |
| 28 : | pazsan | 1.7 | |
| 29 : | jwilke | 1.2 | : (type) ( c-addr u -- ) \ gforth |
| 30 : | outfile-id write-file drop \ !! use ?DUP-IF THROW ENDIF instead of DROP ? | ||
| 31 : | ; | ||
| 32 : | |||
| 33 : | : (emit) ( c -- ) \ gforth | ||
| 34 : | outfile-id emit-file drop \ !! use ?DUP-IF THROW ENDIF instead of DROP ? | ||
| 35 : | ; | ||
| 36 : | pazsan | 1.5 | |
| 37 : | : (key) ( -- c ) \ gforth | ||
| 38 : | infile-id key-file ; | ||
| 39 : | |||
| 40 : | : (key?) ( -- flag ) \ gforth | ||
| 41 : | infile-id key?-file ; | ||
| 42 : | jwilke | 1.2 | [THEN] |
| 43 : | |||
| 44 : | pazsan | 1.7 | undef-words |
| 45 : | pazsan | 1.13 | |
| 46 : | pazsan | 1.7 | Defer type ( c-addr u -- ) \ core |
| 47 : | crook | 1.9 | \G If @var{u}>0, display @var{u} characters from a string starting |
| 48 : | \G with the character stored at @var{c-addr}. | ||
| 49 : | pazsan | 1.13 | [IFDEF] write-file |
| 50 : | : (type) 0 write-file drop ; | ||
| 51 : | [ELSE] | ||
| 52 : | crook | 1.9 | : (type) BEGIN dup WHILE |
| 53 : | >r dup c@ (emit) 1+ r> 1- REPEAT 2drop ; | ||
| 54 : | pazsan | 1.13 | [THEN] |
| 55 : | pazsan | 1.4 | |
| 56 : | pazsan | 1.7 | [IFDEF] (type) ' (type) IS Type [THEN] |
| 57 : | jwilke | 1.2 | |
| 58 : | Defer emit ( c -- ) \ core | ||
| 59 : | crook | 1.8 | \G Display the character associated with character value c. |
| 60 : | pazsan | 1.7 | : (emit) ( c -- ) \ gforth |
| 61 : | 0 emit-file drop \ !! use ?DUP-IF THROW ENDIF instead of DROP ? | ||
| 62 : | ; | ||
| 63 : | |||
| 64 : | [IFDEF] (emit) ' (emit) IS emit [THEN] | ||
| 65 : | jwilke | 1.2 | |
| 66 : | crook | 1.10 | Defer key ( -- char ) \ core |
| 67 : | \G Receive (but do not display) one character, @var{char}. | ||
| 68 : | pazsan | 1.7 | |
| 69 : | [IFDEF] (key) ' (key) IS key [THEN] | ||
| 70 : | pazsan | 1.5 | |
| 71 : | crook | 1.14 | Defer key? ( -- flag ) \ facility key-question |
| 72 : | crook | 1.10 | \G Determine whether a character is available. If a character is |
| 73 : | \G available, @var{flag} is true; the next call to @code{key} will | ||
| 74 : | \G yield the character. Once @code{key?} returns true, subsequent | ||
| 75 : | anton | 1.19 | \G calls to @code{key?} before calling @code{key} or @code{ekey} will |
| 76 : | crook | 1.10 | \G also return true. |
| 77 : | pazsan | 1.7 | |
| 78 : | [IFDEF] (key?) ' (key?) IS key? [THEN] | ||
| 79 : | |||
| 80 : | all-words | ||
| 81 : | jwilke | 1.2 | |
| 82 : | : (.") "lit count type ; | ||
| 83 : | : (S") "lit count ; | ||
| 84 : | |||
| 85 : | anton | 1.1 | \ Input 13feb93py |
| 86 : | |||
| 87 : | 07 constant #bell ( -- c ) \ gforth | ||
| 88 : | 08 constant #bs ( -- c ) \ gforth | ||
| 89 : | 09 constant #tab ( -- c ) \ gforth | ||
| 90 : | 7F constant #del ( -- c ) \ gforth | ||
| 91 : | 0D constant #cr ( -- c ) \ gforth | ||
| 92 : | \ the newline key code | ||
| 93 : | 0C constant #ff ( -- c ) \ gforth | ||
| 94 : | 0A constant #lf ( -- c ) \ gforth | ||
| 95 : | |||
| 96 : | jwilke | 1.3 | : bell #bell emit [ has? os [IF] ] outfile-id flush-file drop [ [THEN] ] ; |
| 97 : | crook | 1.14 | : cr ( -- ) \ core c-r |
| 98 : | anton | 1.17 | \G Output a newline (of the favourite kind of the host OS). Note |
| 99 : | \G that due to the way the Forth command line interpreter inserts | ||
| 100 : | \G newlines, the preferred way to use @code{cr} is at the start | ||
| 101 : | \G of a piece of text; e.g., @code{cr ." hello, world"}. | ||
| 102 : | newline type ; | ||
| 103 : | anton | 1.1 | |
| 104 : | crook | 1.8 | : space ( -- ) \ core |
| 105 : | \G Display one space. | ||
| 106 : | bl emit ; | ||
| 107 : | |||
| 108 : | pazsan | 1.7 | has? ec [IF] |
| 109 : | crook | 1.8 | : spaces ( n -- ) \ core |
| 110 : | \G If n > 0, display n spaces. | ||
| 111 : | 0 max 0 ?DO space LOOP ; | ||
| 112 : | pazsan | 1.7 | : backspaces 0 max 0 ?DO #bs emit LOOP ; |
| 113 : | [ELSE] | ||
| 114 : | anton | 1.1 | \ space spaces 21mar93py |
| 115 : | decimal | ||
| 116 : | Create spaces ( u -- ) \ core | ||
| 117 : | anton | 1.18 | \G Display @var{n} spaces. |
| 118 : | crook | 1.8 | bl 80 times \ times from target compiler! 11may93jaw |
| 119 : | anton | 1.1 | DOES> ( u -- ) |
| 120 : | crook | 1.8 | swap |
| 121 : | 0 max 0 ?DO I' I - &80 min 2dup type +LOOP drop ; | ||
| 122 : | anton | 1.1 | Create backspaces |
| 123 : | crook | 1.8 | 08 80 times \ times from target compiler! 11may93jaw |
| 124 : | anton | 1.1 | DOES> ( u -- ) |
| 125 : | crook | 1.8 | swap |
| 126 : | 0 max 0 ?DO I' I - &80 min 2dup type +LOOP drop ; | ||
| 127 : | anton | 1.1 | hex |
| 128 : | [THEN] | ||
| 129 : |
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