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| 1 : | anton | 1.1 | \ Input 13feb93py |
| 2 : | |||
| 3 : | anton | 1.18 | \ Copyright (C) 1995,1996,1997,1999,2003,2004,2005,2006 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 | 1.7 | \ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA. |
| 20 : | anton | 1.1 | |
| 21 : | : (ins) ( max span addr pos1 key -- max span addr pos2 ) | ||
| 22 : | pazsan | 1.13 | >r 2over = IF rdrop bell EXIT THEN |
| 23 : | 2dup + r@ swap c! r> emit 1+ rot 1+ -rot ; | ||
| 24 : | anton | 1.1 | : (bs) ( max span addr pos1 -- max span addr pos2 flag ) |
| 25 : | dup IF | ||
| 26 : | anton | 1.5 | #bs emit space #bs emit 1- rot 1- -rot |
| 27 : | anton | 1.1 | THEN false ; |
| 28 : | anton | 1.5 | : (ret) ( max span addr pos1 -- max span addr pos2 flag ) |
| 29 : | true space ; | ||
| 30 : | anton | 1.1 | |
| 31 : | Create ctrlkeys | ||
| 32 : | jwilke | 1.9 | ' false a, ' false a, ' false a, ' false a, |
| 33 : | ' false a, ' false a, ' false a, ' false a, | ||
| 34 : | |||
| 35 : | ' (bs) a, ' false a, ' (ret) a, ' false a, | ||
| 36 : | ' false a, ' (ret) a, ' false a, ' false a, | ||
| 37 : | |||
| 38 : | ' false a, ' false a, ' false a, ' false a, | ||
| 39 : | ' false a, ' false a, ' false a, ' false a, | ||
| 40 : | |||
| 41 : | ' false a, ' false a, ' false a, ' false a, | ||
| 42 : | ' false a, ' false a, ' false a, ' false a, | ||
| 43 : | anton | 1.1 | |
| 44 : | defer insert-char | ||
| 45 : | ' (ins) IS insert-char | ||
| 46 : | defer everychar | ||
| 47 : | ' noop IS everychar | ||
| 48 : | pazsan | 1.12 | defer everyline |
| 49 : | ' noop IS everyline | ||
| 50 : | anton | 1.1 | |
| 51 : | : decode ( max span addr pos1 key -- max span addr pos2 flag ) | ||
| 52 : | anton | 1.17 | \ perform action corresponding to key; addr max is the buffer, |
| 53 : | \ addr span is the current string in the buffer, and pos1 is the | ||
| 54 : | \ cursor position in the buffer. | ||
| 55 : | pazsan | 1.10 | everychar |
| 56 : | dup -1 = IF drop 4 THEN \ -1 is EOF | ||
| 57 : | dup #del = IF drop #bs THEN \ del is rubout | ||
| 58 : | dup bl u< IF cells ctrlkeys + perform EXIT THEN | ||
| 59 : | \ check for end reached | ||
| 60 : | pazsan | 1.13 | insert-char 0 ; |
| 61 : | anton | 1.1 | |
| 62 : | anton | 1.8 | : edit-line ( c-addr n1 n2 -- n3 ) \ gforth |
| 63 : | \G edit the string with length @var{n2} in the buffer @var{c-addr | ||
| 64 : | \G n1}, like @code{accept}. | ||
| 65 : | pazsan | 1.12 | everyline |
| 66 : | anton | 1.8 | rot over |
| 67 : | 2dup type | ||
| 68 : | anton | 1.15 | BEGIN xkey decode UNTIL |
| 69 : | crook | 1.4 | 2drop nip ; |
| 70 : | anton | 1.8 | |
| 71 : | : accept ( c-addr +n1 -- +n2 ) \ core | ||
| 72 : | \G Get a string of up to @var{n1} characters from the user input | ||
| 73 : | \G device and store it at @var{c-addr}. @var{n2} is the length of | ||
| 74 : | \G the received string. The user indicates the end by pressing | ||
| 75 : | \G @key{RET}. Gforth supports all the editing functions available | ||
| 76 : | \G on the Forth command line (including history and word | ||
| 77 : | \G completion) in @code{accept}. | ||
| 78 : | dup 0< -&24 and throw \ use edit-line to edit given strings | ||
| 79 : | 0 edit-line ; |
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