[Audacity-nyquist] Nyquist UTF-8 ToolBox, version 0.1

[edgar <edg...@we...>]

Hi all on the Audacity Nyquist list,

;;; Nyquist UTF-8 ToolBox
;;
;; Version 0.1 - October 30, 2010 - edgar-rft[at]web.de
;;
;; This library provides some very simple functions to manipulate
;; ASCII and UTF-8 encoded strings via Nyquist/XLISP list functions.
;;
;; UTF-8-BYTE-P - tests if a XLISP character is a valid UTF-8 byte
;; UTF-8-BYTES  - returns the number of bytes of an UTF-8 character
;;
;; UTF-8-STRING-TO-LIST - UTF-8 string -> list of "string-characters"
;; UTF-8-LIST-TO-STRING - list of "string-characters" -> XLISP string
;;
;; In the list of "string-characters" every ASCII or UTF-8 character
;; from 1-byte to 4-byte is represented by its own list element:
;;
;; (utf-8-string-to-list "hällö") => ("h" "\303\244" "l" "l" "\303\266")
;;                                     h       ä      l   l       ö
;;
;; The list can be manipulated by standard Nyquist list functions and
;; then re-converted into a string by UTF-8-LIST-TO-STRING.
;;
;; The UTF-8 toolbox may help to write custom UTF-8 string access
;; functions like UTF-8-SUBSEQ or UTF-8-STRING-SEARCH with no need
;; to care about the underlying low-level octal sequences.

The rest of the text you can read in the zip-file in the attachment...

Note that albeit I was sitting now for nearly a week on this code every
day for several hours I do not think that it already belongs to the
masterpieces of computer science.

If you find bugs or something else do not be afraid to complain. :)

Thanks,

- edgar