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|
if not modules then modules = { } end modules ['mlib-run'] = {
version = 1.001,
comment = "companion to mlib-ctx.mkiv",
author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
copyright = "PRAGMA ADE / ConTeXt Development Team",
license = "see context related readme files",
}
local type = type
local find = string.find
local concat = table.concat
local trace_terminal = false trackers.register("metapost.terminal", function(v) trace_terminal = v end)
local report_metapost = logs.reporter("metapost")
local report_terminal = logs.reporter("metapost","terminal")
local report_logger = logs.reporter("metapost","log")
local report_error = logs.reporter("metapost","error")
mplib.realtimelogging = false
local l, nl, dl = { }, 0, false
local t, nt, dt = { }, 0, false
local e, ne, de = { }, 0, false
local function logger(target,str)
if target == 1 then
-- log
elseif target == 2 or target == 3 then
-- term
if str == "\n" then
mplib.realtimelogging = true
if nl > 0 then
report_logger(concat(l,"",1,nl))
nl, dl = 0, false
elseif not dl then
report_logger("")
dl = true
end
else
nl = nl + 1
l[nl] = str
end
elseif target == 4 then
report_error(str)
end
end
local finders = { }
mplib.finders = finders -- also used in meta-lua.lua
local new_instance = mplib.new
local function validftype(ftype)
if ftype == "mp" then
return "mp"
else
return nil
end
end
finders.file = function(specification,name,mode,ftype)
return resolvers.findfile(name,validftype(ftype))
end
local findtexfile = resolvers.findtexfile
local opentexfile = resolvers.opentexfile
local splitlines = string.splitlines
local function writetoterminal(terminaldata,maxterm,d)
local t = type(d)
local n = 0
if t == "string" then
d = splitlines(d)
n = #d
for i=1,#d do
maxterm = maxterm + 1
terminaldata[maxterm] = d[i]
end
elseif t == "table" then
for i=1,#d do
local l = d[i]
if find(l,"[\n\r]") then
local s = splitlines(l)
local m = #s
for i=1,m do
maxterm = maxterm + 1
terminaldata[maxterm] = s[i]
end
n = n + m
else
maxterm = maxterm + 1
terminaldata[maxterm] = d[i]
n = 1
end
end
end
if trace_terminal then
report_metapost("writing %i lines, in cache %s",n,maxterm)
end
return maxterm
end
local function readfromterminal(terminaldata,maxterm,nowterm)
if nowterm >= maxterm then
terminaldata[nowterm] = false
maxterm = 0
nowterm = 0
if trace_terminal then
report_metapost("resetting, maxcache %i",#terminaldata)
end
return maxterm, nowterm, nil
else
if nowterm > 0 then
terminaldata[nowterm] = false
end
nowterm = nowterm + 1
local s = terminaldata[nowterm]
if trace_terminal then
report_metapost("reading line %i: %s",nowterm,s)
end
return maxterm, nowterm, s
end
end
local function fileopener()
-- these can go into the table itself
local terminaldata = { }
local maxterm = 0
local nowterm = 0
local terminal = {
name = "terminal",
close = function()
-- terminal = { }
-- maxterm = 0
-- nowterm = 0
end,
reader = function()
local line
maxterm, nowterm, line = readfromterminal(terminaldata,maxterm,nowterm)
return line
end,
writer = function(d)
maxterm = writetoterminal(terminaldata,maxterm,d)
end,
}
return function(name,mode,kind)
if name == "terminal" then
-- report_metapost("opening terminal")
return terminal
elseif mode == "w" then
local f = io.open(name,"wb")
if f then
-- report_metapost("opening file %a for writing",full)
return {
name = full,
writer = function(s) return f:write(s) end, -- io.write(f,s)
close = function() f:close() end,
}
end
else
local full = findtexfile(name,validftype(ftype))
if full then
-- report_metapost("opening file %a for reading",full)
return opentexfile(full)
end
end
end
end
local function finder(name,mode,kind)
return findtexfile(name,kind)
end
function mplib.new(specification)
local openfile = fileopener()
specification.find_file = finder
specification.run_logger = logger
specification.open_file = openfile
specification.interaction = "silent"
specification.halt_on_error = true
local instance = new_instance(specification)
return instance, openfile("terminal")
end
mplib.finder = finder
|
