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Fix sending of long code strings to REPL using temporary files (#89) #122

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Fix sending of long code strings to REPL using temporary files (#89) #122

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9eddee1
Fix sending of long code strings to REPL using temporary files (issue…
arbv Jun 22, 2016
1c8238e
Send short (<= 500 characters) code strings directly to Lua REPL.
arbv Jun 22, 2016
9368e41
Remove useless check for trailing newline (it was made above).
arbv Jun 23, 2016
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54 changes: 49 additions & 5 deletions lua-mode.el
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Original file line number Diff line number Diff line change
Expand Up @@ -1778,13 +1778,57 @@ When called interactively, switch to the process buffer."
(interactive)
(set-marker lua-region-end (or arg (point))))

(defun lua-send-string (str)
"Send STR plus a newline to Lua subprocess.
(defun lua-send-string (chunk-str)
"Load CHUNK-STR plus a newline into Lua subprocess.

If `lua-process' is nil or dead, start a new process first."
(unless (string-equal (substring str -1) "\n")
(setq str (concat str "\n")))
(process-send-string (lua-get-create-process) str))
(let ((str (if (string-equal (substring chunk-str -1) "\n")
chunk-str
(concat chunk-str "\n")))
(lua-process (lua-get-create-process)))
(if (<= (length str) 500) ; handle "short" strings directly
(process-send-string lua-process str)
(let ((tmp-file (make-temp-file "luamode" nil ".tmp"))) ; handle long strings via temporary files
;; write data into temporary file
(with-temp-buffer
(insert str)
(write-file tmp-file))
;; evaluate data in the temporary file and then remove it
(process-send-string
lua-process
(format (concat
"\n"
"local tmp = '%s';"
"local res, e = pcall(function () "
" local do_loadstring = loadstring or load;"
""
" local f, e = io.open(tmp, 'r');" ; open temporary file
" if e then "
" os.remove(tmp);"
" error(e);"
" return;"
" end "
""
" local cont, e = f:read('*all');" ; read all data
" if e then "
" os.remove(tmp);"
" error(e);"
" return;"
" end "
""
" f:close(); f = nil;" ; close and remove file
" os.remove(tmp);"
""
" local f, e = do_loadstring(cont);" ; handle chunk
" if e then "
" error(e);"
" return;"
" end "
""
" return f();" ; execute chunk
"end);"
"if e then _, _ = os.remove(tmp); error(e); end" ; handle error, if any
"\n") tmp-file))))))

(defun lua-send-current-line ()
"Send current line to Lua subprocess, found in `lua-process'.
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