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prompt.arc
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prompt.arc
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; Prompt: Web-based programming application. 4 Aug 06.
(= appdir* "arc/apps/")
(defop prompt req
(let user (get-user req)
(if (admin user)
(prompt-page user)
(pr "Sorry."))))
(def prompt-page (user . msg)
(ensure-dir appdir*)
(ensure-dir (string appdir* user))
(whitepage
(prbold "Prompt")
(hspace 20)
(pr user " | ")
(link "logout")
(when msg (hspace 10) (apply pr msg))
(br2)
(tag (table border 0 cellspacing 10)
(each app (dir (+ appdir* user))
(tr (td app)
(td (userlink user 'edit (edit-app user app)))
(td (userlink user 'run (run-app user app)))
(td (hspace 40)
(userlink user 'delete (rem-app user app))))))
(br2)
(aform (fn (req)
(when-umatch user req
(aif (goodname (arg req "app"))
(edit-app user it)
(prompt-page user "Bad name."))))
(tab (row "name:" (input "app") (submit "create app"))))))
(def app-path (user app)
(and user app (+ appdir* user "/" app)))
(def read-app (user app)
(aand (app-path user app)
(file-exists it)
(w/infile i it (readall i))))
(def write-app (user app exprs)
(awhen (app-path user app)
(w/outfile o it
(each e exprs (write e o)))))
(def rem-app (user app)
(let file (app-path user app)
(if (file-exists file)
(do (rmfile (app-path user app))
(prompt-page user "Program " app " deleted."))
(prompt-page user "No such app."))))
(def edit-app (user app)
(whitepage
(pr "user: " user " app: " app)
(br2)
(aform (fn (req)
(let u2 (get-user req)
(if (is u2 user)
(do (when (is (arg req "cmd") "save")
(write-app user app (readall (arg req "exprs"))))
(prompt-page user))
(login-page 'both nil
(fn (u ip) (prompt-page u))))))
(textarea "exprs" 10 82
(pprcode (read-app user app)))
(br2)
(buts 'cmd "save" "cancel"))))
(def pprcode (exprs)
(each e exprs
(ppr e)
(pr "\n\n")))
(def view-app (user app)
(whitepage
(pr "user: " user " app: " app)
(br2)
(tag xmp (pprcode (read-app user app)))))
(def run-app (user app)
(let exprs (read-app user app)
(if exprs
(on-err (fn (c) (pr "Error: " (details c)))
(fn () (map eval exprs)))
(prompt-page user "Error: No application " app " for user " user))))
(wipe repl-history*)
(defop repl req
(if (admin (get-user req))
(replpage req)
(pr "Sorry.")))
(def replpage (req)
(whitepage
(repl (readall (or (arg req "expr") "")) "repl")))
(def repl (exprs url)
(each expr exprs
(on-err (fn (c) (push (list expr c t) repl-history*))
(fn ()
(= that (eval expr) thatexpr expr)
(push (list expr that) repl-history*))))
(form url
(textarea "expr" 8 60)
(sp)
(submit))
(tag xmp
(each (expr val err) (firstn 20 repl-history*)
(pr "> ")
(ppr expr)
(prn)
(prn (if err "Error: " "")
(ellipsize (tostring (write val)) 800)))))
(defop help req
(withs
(
rawargs (listtab:req 'args)
args [coerce (rawargs _) 'string]
nonempty [if (isnt "" _) _]
enempty [if (no _) "" _]
;not yet implemented in base libs as of this writing.
urlencode
(fn (s)
(let code [coerce _ 'int 16]
(tostring
(forlen i s
(if (some (s i)
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz1234567890")
(pr (s i))
(is (s i) #\space)
(pr "+")
(pr "%" (coerce (code:s i) 'string 16)))))))
enformat
(fn (s)
;inter-recursion needed, so just assign nothing
(let (get normal one-bracket inlink one-close
emit-char out-char build build2
bldg emit-link) nil
(=
get
(with (i 0 l (len s))
(fn () (if (< i l) (do1 (cut s i (+ 1 i)) (++ i)))))
normal
(fn ()
(caselet c (get)
nil nil
"[" (emit-char c one-bracket)
(emit-char c normal)))
one-bracket
(fn ()
(caselet c (get)
nil nil
"[" (emit-char c inlink)
(emit-char c normal)))
inlink
(fn ()
(caselet c (get)
nil nil
"]" (one-close)
(build c inlink)))
one-close
(fn ()
(caselet c (get)
nil nil
"]" (emit-link (fn () (pr "]]") (normal)))
(build2 "]" c inlink)))
emit-char
(fn (c next)
(out-char c)
(next))
out-char
(fn (c)
(case c
"<" (pr "<")
">" (pr ">")
"&" (pr "&")
"\"" (pr """)
"/" (pr "⁄")
" " (nbsp)
"\n" (br)
(pr c)))
build
(fn (c next) (push c bldg) (next))
build2
(fn (c1 c2 next) (push c1 bldg) (push c2 bldg) (next))
emit-link
(fn (next)
(let ln (apply + (rev bldg))
(link ln
(if (help* (coerce ln 'sym))
(+ "?sym=" (urlencode ln))
(+ "?str=" (urlencode ln)))))
(wipe bldg)
(next)))
(tag (code) (normal)) )))
(tag (html)
(tag (head)
(tag (title)
(aif (nonempty:args "sym") (pr it " - ")
(nonempty:args "str") (pr "\"" it "\" - "))
(pr "Online help")))
(tag (body)
(aif
(nonempty:args "sym")
(enformat (eval `(tostring:help ,(coerce it 'sym))))
(nonempty:args "str")
(prall
;mysteriously, at the time of this writing, (+ "?sym=" _) fails
(map
(compose
[tostring
(link (eschtml _)
(tostring (pr "?sym=" (urlencode _))))]
string)
(helpsearch-core (coerce it 'string)))
"Related symbols:<br>" "<br>")
(pr "Welcome to online help. "
"Enter your search below.") )
;Use 'tag because we want to use get method for
;this form, in order to allow the user to bookmark
;search results.
(tag (form method 'get action 'help)
(inputs "sym" "Search Function "
20 (enempty:args "sym")
"str" "Search Docstrings "
20 (enempty:args "str") )
(br)
(submit "Search"))
;dummy form to force reload of this operation
(tag (form method 'get action 'help)
(submit "Clear") )))))