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| 1 : | pazsan | 1.1 | \ very simple archive format 29jul2012py |
| 2 : | |||
| 3 : | \ Copyright (C) 2012 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 3 | ||
| 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, see http://www.gnu.org/licenses/. | ||
| 19 : | |||
| 20 : | \ the intention for this format is to ship Gforth's files to | ||
| 21 : | \ limited systems in a very simple format (simpler than tar) | ||
| 22 : | \ so that unpacking is totally trivial. | ||
| 23 : | \ File system capabilities expected are similar to vfat | ||
| 24 : | \ no date stamp is given | ||
| 25 : | \ the file is supposed to be compressed with zlib afterwards | ||
| 26 : | |||
| 27 : | \ Format of each file: | ||
| 28 : | \ 32 bit len type filename\0 - counted+zero-terminated, aligned to 4 bytes | ||
| 29 : | \ 32 bit size, little endian, aligend to 4 bytes | ||
| 30 : | \ file contents, plus alignment to 4 bytes | ||
| 31 : | \ type is: | ||
| 32 : | \ 'f' for file, | ||
| 33 : | \ 'd' for directory, | ||
| 34 : | \ 's' for symlink, | ||
| 35 : | \ 'h' for hardlink | ||
| 36 : | \ rules for directories are: Specify each before first use | ||
| 37 : | |||
| 38 : | 4 buffer: fsize | ||
| 39 : | |||
| 40 : | : >align ( n -- ) dup sfaligned swap - spaces ; | ||
| 41 : | : .len ( n -- ) fsize le-l! fsize 4 type ; | ||
| 42 : | : .z ( -- ) 0 .len ; | ||
| 43 : | : .entry ( addr u char -- addr u ) | ||
| 44 : | >r dup 2 + .len r> emit 2dup type 0 emit dup 2 + >align ; | ||
| 45 : | |||
| 46 : | : -scan ( addr u char -- addr' u' ) | ||
| 47 : | >r BEGIN dup WHILE 1- 2dup + c@ r@ = UNTIL THEN | ||
| 48 : | rdrop ; | ||
| 49 : | |||
| 50 : | wordlist constant dirs | ||
| 51 : | |||
| 52 : | : :dir ( addr u -- ) | ||
| 53 : | get-current >r dirs set-current nextname create r> set-current ; | ||
| 54 : | |||
| 55 : | "." :dir | ||
| 56 : | |||
| 57 : | : ?dir ( addr u -- ) | ||
| 58 : | '/' -scan dup 0= IF 2drop EXIT THEN | ||
| 59 : | 2dup dirs search-wordlist 0= IF | ||
| 60 : | 2dup recurse | ||
| 61 : | 'd' .entry .z :dir | ||
| 62 : | ELSE | ||
| 63 : | drop 2drop | ||
| 64 : | THEN ; | ||
| 65 : | |||
| 66 : | : dump-a-file ( addr u -- ) | ||
| 67 : | 2dup ?dir | ||
| 68 : | 'f' .entry | ||
| 69 : | slurp-file dup .len 2dup type dup >align | ||
| 70 : | drop free throw ; | ||
| 71 : | |||
| 72 : | : dump-files ( -- ) | ||
| 73 : | BEGIN argc @ 1 > WHILE | ||
| 74 : | next-arg dump-a-file | ||
| 75 : | REPEAT ; | ||
| 76 : | |||
| 77 : | script? [IF] | ||
| 78 : | argc @ 1 = [IF] | ||
| 79 : | ." call archive.fs <file list> >output" cr bye | ||
| 80 : | [ELSE] | ||
| 81 : | dump-files bye | ||
| 82 : | [THEN] | ||
| 83 : | [THEN] |
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