Thanks for the advice. I can provide more of the code, or all the code...
The specific error messages are:
fsed.rb:681:in 'select': Interrupt
from fsed.rb 681:in 'run'
from edit.rb:93
-or-
the application simply reports "Quit", with no error at all
Let me send you the whole loop... it's long and not refactored and a
mess.... so no laughing (out loud...)
I'm not sure what else I could provide. Unix low level io is not one
of my skills...
Appreciate any other advice you guys could give, and I will happily
provide any info you want.
Take Care and thanks!
Mark
while true
if select([@in_io], nil, nil, 1)
c = @in_io.sysread(1)
#c = @in_io.getc
$lf.print"c: #{c.bytes.to_a}\n"
if @supress then # if we are suppressing the mysterious
extra linefeed... we do that here.
@supress = false
c = 0.chr if c.bytes.to_a[0] = 10
end
if @w_mode then #We are in winodw mode, not edit mode...
$lf.print "in wmode\n"
$lf.print "c: #{c.upcase}"
case c
when "\e" #effectively, esc this is cancel for everything
@w_mode = false
@out_io.print @state.screen_clear
else
case @w_type
when ABORT,SAVE
if c.upcase == "Y" then
@state.clear if ABORT
@state.clear_screen
sleep(4)
break
else
@out_io.print @state.screen_clear
@w_mode = false
end
end
end
else
case c
when "\cX" # exit
@out_io.print @state.yes_no_window("Post message... Are you sure?")
@w_type = SAVE
@w_mode = true
when "\cG","\eOP"
@out_io.print @state.help_window
@w_type = MESSAGE
@w_mode = true
when "\cA"
@out_io.print @state.yes_no_window("Abort message... Are you sure?")
@w_type = ABORT
@w_mode = true
when "\cN" #insert line
@state.newline
@out_io.print @state.redraw(true)
when "\cY" #delete line
@state.deleteline
@out_io.print @state.redraw(true)
when "\cL" # refresh
@out_io.print @state.redraw(true)
when "\r","\n"
$lf.print "i'm at newline\n"
@state.newline
@supress = true if @bbs_mode #telnet seems to like to echo
linefeeds. lets supress this ...
@out_io.print @state.redraw(true)
when "\010", "\177"
redraw = @state.backspace
@out_io.print "\e[#{@state.current_y + @state.header_height};1H\e[K"
@out_io.print @state.buffer.line(@state.current_y)
@out_io.print @state.update_cursor_position
@out_io.print @state.redraw(true) if redraw
when "\e" # escape
buf = c
else
if buf.nil?
chr = c.unpack("c")[0]
if (chr >= 32 && chr <= 127)
out_c,redraw = @state.input_char_at_cursor(c)
@out_io.putc(out_c) if !out_c.nil?
@out_io.print @state.redraw(true) if redraw
end
else
buf << c
$lf.print "buf: #{buf}\n"
case buf
when "\e[H","\e[1"
@state.home_cursor
@out_io.print @state.update_cursor_position
when "\e[F","\e[4"
@state.end_cursor
@out_io.print @state.update_cursor_position
when "\e[6"
redraw = @state.page_down
@out_io.print @state.redraw(true) if redraw
when "\e[5"
redraw = @state.page_up
@out_io.print @state.redraw(true) if redraw
when "\e[2"
@state.toggle_ins
@out_io.print @state.redraw(true)
when "\e[A"
redraw = @state.move_cursor_up(1)
if redraw
@out_io.print @state.redraw(true)
else
@out_io.print @state.update_cursor_position
end
buf = nil
when "\e[B"
redraw = @state.move_cursor_down(1)
if redraw
@out_io.print @state.redraw(true)
else
@out_io.print @state.update_cursor_position
end
buf = nil
when "\e[D"
@state.move_cursor_left(1)
@out_io.print @state.update_cursor_position
buf = nil
when "\e[C"
@state.move_cursor_right(1)
@out_io.print @state.update_cursor_position
buf = nil
else
if buf.size >= 3
buf = nil
end
end
end
end
end
end
end
@state.buffer
end
end
2008/7/1 Mark Firestone said:
Anyone getting errors like this.... I'm working on a console mode full
screen editor (that Dossy kindly prototyped for me years ago).
Basically, it's reading $STD_IN with a select, thusly:
if select([@in_io], nil, nil, 1)
c = @in_io.sysread(1)
{lots of stuff to process the input follows...}
Funny thing is, there seems to be a finite amount of code that can be
below here, in the input loop. After I add a certian amount, I start
getting funny errors while I'm typing in the editor, either in select:
interrupt, or the program simply says "Quit" and abends.
If I take some code out, the behaviour stops. Problem is, I need this
code. I was also having the same issues when i was using
term/ansicolor. I wrote my own ansi module and this went away, until
I started adding code to the select loop.
...
I've used select in this way before, on a TCP/IP socket, with no issues....
Frankly, this is far too little information to come up with any
meaningful reply. You do not even give specific errors or stack
traces.
From what you posted I'd say it is something timing related or mixing
sysread with other IO operations but these are a totally wild guesses.
Personally I start implementing with #read and only switch to
#sysread if there is a particular reason for using this.
Cheers
robert
