/usr/share/doc/lsyncd/examples/limagemagic.lua is in lsyncd 2.1.6-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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-- Lsyncd user-script that creates a "magic" image converter directory.
--
-- This configuration will automatically convert all images that are placed
-- in the directory 'magicdir' all resulting images are placed in the same
-- directory!
--
-- Be sure to mkdir 'magicdir' first.
-----
-- Fileformats: .jpg .gif .png
--
local formats = { jpg=true, gif=true, png=true, }
convert = {
delay = 0,
maxProcesses = 99,
action = function(inlet)
local event = inlet.getEvent()
if event.isdir then
-- ignores events on dirs
inlet.discardEvent(event)
return
end
-- extract extension and basefilename
local p = event.pathname
local ext = string.match(p, ".*%.([^.]+)$")
local base = string.match(p, "(.*)%.[^.]+$")
if not formats[ext] then
-- an unknown extenion
log("Normal", "not doing something on ."..ext)
inlet.discardEvent(event)
return
end
-- autoconvert on create and modify
if event.etype == "Create" or event.etype == "Modify" then
-- builds one bash command
local cmd = ""
-- do for all other extensions
for k, _ in pairs(formats) do
if k ~= ext then
-- excludes files to be created, so no
-- followup actions will occur
inlet.addExclude(base..'.'..k)
if cmd ~= "" then
cmd = cmd .. " && "
end
cmd = cmd..
'/usr/bin/convert "'..
event.source..p..'" "'..
event.source..base..'.'..k..
'" || /bin/true'
end
end
log("Normal", "Converting "..p)
spawnShell(event, cmd)
return
end
-- deletes all formats if you delete one
if event.etype == "Delete" then
-- builds one bash command
local cmd = ""
-- do for all other extensions
for k, _ in pairs(formats) do
if k ~= ext then
-- excludes files to be created, so no
-- followup actions will occur
inlet.addExclude(base..'.'..k)
if cmd ~= "" then
cmd = cmd .. " && "
end
cmd = cmd..
'rm "'..event.source..base..'.'..k..
'" || /bin/true'
end
end
log("Normal", "Deleting all "..p)
spawnShell(event, cmd)
return
end
-- ignores other events.
inlet.discardEvent(event)
end,
-----
-- Removes excludes when convertions are finished
--
collect = function(event, exitcode)
local p = event.pathname
local ext = string.match(p, ".*%.([^.]+)$")
local base = string.match(p, "(.*)%.[^.]+$")
local inlet = event.inlet
if event.etype == "Create" or
event.etype == "Modify" or
event.etype == "Delete"
then
for k, _ in pairs(formats) do
inlet.rmExclude(base..'.'..k)
end
end
end,
-----
-- Does not collapse anything
collapse = function()
return 3
end,
}
sync{convert, source="magicdir", subdirs=false}
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