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|
require "time"
require "open3"
class IO
def readline_nonblock
buffer = ""
buffer << read_nonblock(1) while buffer[-1] != "\n"
buffer
rescue IO::WaitReadable => blocking
if (not buffer.empty?)
ungetc(buffer)
end
raise blocking
end
end
class Ncurses::WINDOW
def print_line(str, hscroll=0)
revert_color = false
str[0,5].match(/\033\[3(.)m/) { |c| #Line starts with an escape sequence. We handle that `a la xterm`
Ncurses.init_pair(10, c[1].to_i, Ncurses::COLOR_BLACK)
self.attron(Ncurses.COLOR_PAIR(10))
revert_color = true
str = str[5,str.length]
}
str = str.gsub("\011"," ")
#Any other control char is ignored and escaped
str = str.gsub(/[[:cntrl:]]/) { |m|
"^"+(m.ord + 64).chr
}
if(hscroll > 0)
strcut = str[hscroll,str.length]
if(strcut.nil? or strcut.empty?)
str = ""
else
str = "…"+strcut
end
end
strlen = str.length
winlen = self.getmaxx-self.getcurx-1
if(strlen <= winlen)
self.addstr(str + " "*(winlen-strlen))
else
self.addstr(str[0,winlen-1]+"…")
end
if(revert_color)
self.attroff(Ncurses.COLOR_PAIR(10))
end
end
end
class List_Win
def initialize(sections, size)
@params = sections
@win = Ncurses::WINDOW.new(0, size*Ncurses.COLS()/100, 0, 0)
@win.border(*([0]*8))
@win.keypad(true)
@win.timeout(1000)
@win.refresh()
@entry = 0
end
def getch()
@win.getch()
end
def clear()
@win.clear()
end
def resize(x,y)
@win.resize(x,y)
end
def move(x,y)
@win.move(x,y)
end
def refresh()
@win.refresh()
end
def print_list(entry=nil)
if(not entry.nil?)
@entry = entry
end
i = 0
@params.each { |section_name,section|
if(@entry == i)
@win.attron(Ncurses::A_REVERSE)
end
@win.move(i+1,1)
@win.print_line(section['Name'])
if(@entry == i)
@win.attroff(Ncurses::A_REVERSE)
end
i = i+1
}
@win.border(*([0]*8))
@win.move(0,3)
@win.addstr("Menu")
@win.refresh()
end
end
class Buff_Win
def initialize(winsize,winpos,params)
@params = params
@win = Ncurses::WINDOW.new(0, winsize, 0, winpos)
@panel = Ncurses::Panel::PANEL.new(@win)
if(@params['Type'] == 'oneshot')
@buffer = Buffer.new(0)
else
@buffer = Buffer.new(@params['Buffer'].to_i)
end
@proc = nil
@curr_offset = 0
@hscroll = 0
update_date()
spawn_proc()
print_buffer()
end
def move_resize(winsize,winpos)
newwin = Ncurses::WINDOW.new(0, winsize, 0, winpos)
Ncurses::Panel.replace_panel(@panel, newwin)
Ncurses.delwin(@win)
@win = newwin
print_buffer()
end
def update_date()
@last_update = Time.now
@date = @last_update.strftime("%F %R:%S")
end
def win_border()
@win.border(*([0]*8))
win_header()
end
def win_header()
@win.move(0,3)
@win.addnstr(@params['Name'],@win.getmaxx-@date.length-10)
@win.move(0,@win.getmaxx-@date.length-2)
@win.addstr(@date)
end
def refresh()
@win.refresh()
end
def clear()
@win.clear()
end
def show_win()
Ncurses::Panel.top_panel(@panel)
Ncurses::Panel.update_panels
end
def hscroll(scroll=0)
@hscroll += scroll
if(@hscroll < 0)
@hscroll = 0
end
if(@hscroll > @buffer.maxlen()-@win.getmaxx+3)
@hscroll = @buffer.maxlen()-@win.getmaxx+3
end
print_buffer()
refresh()
end
def scroll(scroll=0,goto=nil,fact=nil)
if (not fact.nil?)
scroll = (fact * @win.getmaxy.to_f).to_i
elsif (not goto.nil?)
@curr_offset = (goto * @buffer.size()).to_i
scroll = 0
end
#@curr_offset -= @win.getmaxy/2
@curr_offset += scroll
if(@curr_offset < 0)
@curr_offset = 0
end
if(@curr_offset > @buffer.size()-@win.getmaxy+2)
@curr_offset = @buffer.size()-@win.getmaxy+2
end
print_buffer()
refresh()
end
def print_buffer()
#clear()
win_border()
j = 1
@buffer.yield(@win.getmaxy-2,@curr_offset) { |l,type|
@win.move(j,1)
if(type == 1) then @win.attron(Ncurses.COLOR_PAIR(1)) end
@win.print_line(l,hscroll=@hscroll)
if(type == 1) then @win.attroff(Ncurses.COLOR_PAIR(1)) end
j = j+1
}
if(@buffer.has_before?)
@win.move(2,@win.getmaxx-1)
@win.attron(Ncurses::A_REVERSE)
@win.addstr("↑")
@win.attroff(Ncurses::A_REVERSE)
end
if(@buffer.has_after?)
@win.move(@win.getmaxy-2,@win.getmaxx-1)
@win.attron(Ncurses::A_REVERSE)
@win.addstr("↓")
@win.attroff(Ncurses::A_REVERSE)
end
end
def proc_readlines()
begin
while true
@buffer.push(@proc.readline_nonblock)
update_date()
end
rescue IO::WaitReadable
end
end
def update(force=false)
if(@params['Type'] == 'continuous')
proc_readlines()
end
if(@params['Type'] == 'oneshot')
if(force or (Time.now - @last_update > @params['Periodic'].to_i))
@buffer.clear()
spawn_proc()
clear()
end
end
print_buffer()
end
def spawn_proc()
if(@params['Type'] == 'oneshot')
update_date()
Open3.popen3(@params["Command"]) { |i,o,e,t|
while ((not o.eof?) or (not e.eof?))
rs = IO.select([o,e],nil)[0]
r = (rs[0].eof?)? rs[1] : rs[0]
if r.fileno == o.fileno
@buffer.push(r.readline)
elsif r.fileno == e.fileno
@buffer.push(r.readline,type=1)
end
end
}
elsif(@params['Type'] == 'continuous')
@proc = IO.popen(@params["Command"])
proc_readlines()
end
end
end
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