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1 | \ ========== Copyright Header Begin ========================================== |
2 | \ | |
3 | \ Hypervisor Software File: propenc.fth | |
4 | \ | |
5 | \ Copyright (c) 2006 Sun Microsystems, Inc. All Rights Reserved. | |
6 | \ | |
7 | \ - Do no alter or remove copyright notices | |
8 | \ | |
9 | \ - Redistribution and use of this software in source and binary forms, with | |
10 | \ or without modification, are permitted provided that the following | |
11 | \ conditions are met: | |
12 | \ | |
13 | \ - Redistribution of source code must retain the above copyright notice, | |
14 | \ this list of conditions and the following disclaimer. | |
15 | \ | |
16 | \ - Redistribution in binary form must reproduce the above copyright notice, | |
17 | \ this list of conditions and the following disclaimer in the | |
18 | \ documentation and/or other materials provided with the distribution. | |
19 | \ | |
20 | \ Neither the name of Sun Microsystems, Inc. or the names of contributors | |
21 | \ may be used to endorse or promote products derived from this software | |
22 | \ without specific prior written permission. | |
23 | \ | |
24 | \ This software is provided "AS IS," without a warranty of any kind. | |
25 | \ ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, | |
26 | \ INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A | |
27 | \ PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN | |
28 | \ MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR | |
29 | \ ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR | |
30 | \ DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN | |
31 | \ OR ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR | |
32 | \ FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE | |
33 | \ DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, | |
34 | \ ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF | |
35 | \ SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. | |
36 | \ | |
37 | \ You acknowledge that this software is not designed, licensed or | |
38 | \ intended for use in the design, construction, operation or maintenance of | |
39 | \ any nuclear facility. | |
40 | \ | |
41 | \ ========== Copyright Header End ============================================ | |
42 | id: @(#)propenc.fth 1.5 98/04/08 | |
43 | purpose: Property encoding and decoding primitives | |
44 | copyright: Copyright 1990 Sun Microsystems, Inc. All Rights Reserved | |
45 | ||
46 | \ External encoding and decoding for primitive data types | |
47 | ||
48 | \ Encode integers into a byte array, suitable for passing to Unix. | |
49 | \ Decode integers from a byte array. | |
50 | ||
51 | decimal | |
52 | headers | |
53 | \ Merge two property-encoded arrays into a single array | |
54 | \ Assumes that adr0+len0 == adr1 | |
55 | : encode+ ( adr0 len0 adr1 len1 -- adr0 len0+len1 ) nip + ; | |
56 | ||
57 | ||
58 | \ Copy a byte array into the dictionary. | |
59 | : encode-bytes ( adr len -- adr' len ) | |
60 | here >r ( adr len ) | |
61 | bounds ?do i c@ c, loop ( rs: start ) | |
62 | r> here over - ( adr' len ) | |
63 | ; | |
64 | ||
65 | : decode-bytes ( adr1 len1 len2 -- adr1+len2 len1-len2 adr1 len2 ) | |
66 | >r over swap r@ /string rot r> | |
67 | ; | |
68 | ||
69 | ||
70 | \ Copy a string to the dictionary, and add a null byte at the end | |
71 | : encode-string ( adr len -- adr' len+1 ) | |
72 | here >r ( adr len ) | |
73 | bounds ?do i c@ c, loop 0 c, ( ) ( rs: start ) | |
74 | r> here over - ( adr' len+1 ) | |
75 | ; | |
76 | ||
77 | \ adrb,lenb is the initial null-terminated string from the argument string. | |
78 | \ lenb does not include the null. adra lena is the remainder string. | |
79 | : decode-string ( adr len -- adra lena adrb lenb ) | |
80 | 0 left-parse-string | |
81 | ; | |
82 | : get-encoded-string ( adr len -- adr len-1 ) 1- ; | |
83 | ||
84 | \ Copy an int as 4 bytes to the dictionary | |
85 | : encode-int ( i -- adr len ) here swap be-l, /l ; | |
86 | ||
87 | : decode-int ( adr len -- adr' len' n ) | |
88 | over be-l@ >r /l /string r> | |
89 | ; | |
90 | : get-encoded-int ( adr len -- n ) drop be-l@ ; | |
91 | ||
92 | headerless | |
93 | ||
94 | : ?base ( adr len -- adr' len' ) | |
95 | dup 2 > if ( adr len ) | |
96 | over c@ ascii 0 = if ( adr len ) | |
97 | over 1+ c@ ascii x = if ( adr len ) | |
98 | hex 2 /string ( adr+2 len-2 ) | |
99 | else ( adr len ) | |
100 | octal 1 /string ( adr+1 len-1 ) | |
101 | then ( adr' len' ) | |
102 | then ( adr' len' ) | |
103 | then ( adr' len' ) | |
104 | ; | |
105 | ||
106 | headers | |
107 | : encode-number ( adr len apf -- n ) | |
108 | drop ( adr,len ) | |
109 | base @ >r decimal ( adr,len ) ( r: base ) | |
110 | ?base strip-blanks ( adr',len' ) ( r: base ) | |
111 | $number r> base ! if ( ) | |
112 | p" bad-number" throw ( ) | |
113 | then ( n ) | |
114 | ; |