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README (1485B) | |
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1 trivial-gray-streams | |
2 ==================== | |
3 | |
4 Gray streams is an interface proposed for inclusion with ANSI CL | |
5 by David N. Gray in Issue STREAM-DEFINITION-BY-USER | |
6 (http://www.nhplace.com/kent/CL/Issues/stream-definition-by-user.html). | |
7 The proposal did not make it into ANSI CL, but most popular | |
8 CL implementations implement this facility anyway. | |
9 | |
10 This system provides an extremely thin compatibility layer for gray | |
11 streams. | |
12 | |
13 How to use it | |
14 ============= | |
15 | |
16 Use the package TRIVIAL-GRAY-STREAMS to refer Gray stream | |
17 classes to inherit from, generic functions to implement. | |
18 | |
19 Extensions | |
20 ========== | |
21 | |
22 The Gray proposal was made before the ANCI CL standard was finalized, | |
23 and was based on the Common Lisp The Language book. | |
24 | |
25 The book does not have cl:file-position, cl:read-sequence, cl:write-sequ… | |
26 functions. That's why (we think) the Gray proposal does not specify | |
27 their counterparts: stream-file-position, stream-read-sequence, stream-w… | |
28 | |
29 trivial-gray-streams supports these functions: | |
30 | |
31 Generic function STREAM-READ-SEQUENCE (stream sequence start end &key) | |
32 Generic function STREAM-WRITE-SEQUENCE (stream sequence start end &key) | |
33 | |
34 Notice that we use two required arguments and allow additional | |
35 keyword arguments. Your methods on these function should have | |
36 compliant lambda lists: | |
37 (stream sequence start end &key) | |
38 | |
39 Generic function STREAM-FILE-POSITION (stream) => file position | |
40 Generic function (SETF STREAM-FILE-POSITION) (position-spec stream) => s… |