newlisp/util/nls

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#!/usr/bin/newlisp
; - nls - newLISP shell combines interactive OS and LISP shell
;
; v.1.0 - adapted to new manual HTML formatting 2009-08-04
; v.1.1 - better regex string for syntax filtering 2011-11-01
; now formats dolist, dotimes ... etc. correctly
; v.1.2 - fix for Windows probelm passing cr-lf in command-event
; c.1.3 - cut off cr-lf only on versions < 10.4.1
;
; Directory and file commands to not work yet on names containing spaces!
; Does not work with <,>,<<,>>
;
;
; Use the prompt as if a Bash shell. Commands not starting with an opening
; parenthesis or space are interpreted as UNIX shell cmomands, commands
; starting with parenthesis or space are interpreted as interacive newLISP
; commands.
(define (help func-name)
(when (= func-name "help") (set 'func-name ""))
(if (find func-name "|+*-") (push "\\" func-name))
(set 'helpfile (read-file (if (= ostype "Win32")
(string (env "NEWLISPDIR") "/newlisp_manual.html")
"/usr/share/doc/newlisp/newlisp_manual.html")))
(set 'html-text (join
(find-all (format {(syntax: \(%s.*?)(<br/>|</h4>)} func-name ) helpfile $1) "\n"))
(replace "<.*?>" html-text "" 0)
(replace "&lt;" html-text "<")
(replace "&gt;" html-text ">")
(replace "&amp;" html-text "&")
(println html-text)
"")
; set the prompt to the current path
(prompt-event (fn (ctx) (string ctx ":" (real-path) "> ")))
; handle some special commands, newLISP expressions and shell commands
(command-event (fn (s)
(if (and (< (sys-info -2) 10401) (= ostype "Win32"))
(set 's (chop s 2)))
(if
; get syntax help
(starts-with s "\\?|help" 0)
(help (last (parse s " ")))
; restart newLISP
(starts-with s "reset")
(reset true) ; restart
; avoid X-windows beeing started on OS X
(starts-with s "x")
""
; all directory changes must be done inside newLISP
; previous directory cd -
(starts-with s "cd -")
(begin
(set 'new-dir prev-dir)
(set 'prev-dir (real-path))
(string " " (true? (change-dir new-dir))))
; pushd
(starts-with s "pushd")
(begin
(set 'prev-dir (real-path))
(push prev-dir dir-stack)
(string " " (true? (change-dir (last (parse s " "))))))
; popd
(starts-with s "popd")
(begin
(set 'prev-dir (real-path))
(string " " (true? (change-dir (pop dir-stack)))))
; go to home directory
(= s "cd")
(begin
(set 'prev-dir (real-path))
(string " " (true? (change-dir (env "HOME")))))
; change directory cd
(starts-with s "cd")
(begin
(set 'prev-dir (real-path))
(string " " (true? (change-dir (last (parse s " "))))))
; else handle as a shell command, start newLISP expressions
; with either a space or a parenthesis
(starts-with s "[\\.a-zA-Z]" 0)
(append "!" s)
true s)))
;; eof