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if not modules then modules = { } end modules ['luat-mac'] = {
version = 1.001,
comment = "companion to luat-lib.mkiv",
author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
copyright = "PRAGMA ADE / ConTeXt Development Team",
license = "see context related readme files"
}
local P, V, S, R, C, Cs, Cmt = lpeg.P, lpeg.V, lpeg.S, lpeg.R, lpeg.C, lpeg.Cs, lpeg.Cmt
local lpegmatch, patterns = lpeg.match, lpeg.patterns
local insert, remove = table.insert, table.remove
local rep = string.rep
local setmetatable = setmetatable
local report_macros = logs.new("macros")
local stack, top, n, hashes = { }, nil, 0, { }
local function set(s)
if top then
n = n + 1
if n > 9 then
report_macros("number of arguments > 9, ignoring %s",s)
else
local ns = #stack
local h = hashes[ns]
if not h then
h = rep("#",ns)
hashes[ns] = h
end
m = h .. n
top[s] = m
return m
end
end
end
local function get(s)
local m = top and top[s] or s
return m
end
local function push()
top = { }
n = 0
local s = stack[#stack]
if s then
setmetatable(top,{ __index = s })
end
insert(stack,top)
end
local function pop()
top = remove(stack)
end
local leftbrace = P("{")
local rightbrace = P("}")
local escape = P("\\")
local space = patterns.space
local spaces = space^1
local newline = patterns.newline
local nobrace = 1 - leftbrace - rightbrace
local name = R("AZ","az")^1 -- @?! -- utf?
local longname = (leftbrace/"") * (nobrace^1) * (rightbrace/"")
local variable = P("#") * Cs(name + longname)
local escapedname = escape * name
local definer = escape * (P("def") + P("egdx") * P("def"))
local startcode = P("\\starttexdefinition")
local stopcode = P("\\stoptexdefinition")
local anything = patterns.anything
local always = patterns.alwaysmatched
local pushlocal = always / push
local poplocal = always / pop
local declaration = variable / set
local identifier = variable / get
local function matcherror(str,pos)
report_macros("runaway definition at: %s",string.sub(str,pos-30,pos))
end
local grammar = { "converter",
texcode = pushlocal
* startcode
* spaces
* name
* spaces
* (declaration + (1 - newline - space))^0
* V("texbody")
* stopcode
* poplocal,
texbody = ( V("definition")
+ identifier
+ V("braced")
+ (1 - stopcode)
)^0,
definition = pushlocal
* definer
* escapedname
* (declaration + (1-leftbrace))^0
* V("braced")
* poplocal,
braced = leftbrace
* ( V("definition")
+ identifier
+ V("texcode")
+ V("braced")
+ nobrace
)^0
-- * rightbrace^-1, -- the -1 catches errors
* (rightbrace + Cmt(always,matcherror)),
pattern = V("definition") + V("texcode") + anything,
converter = V("pattern")^1,
}
local parser = Cs(grammar)
local checker = P("%") * (1 - newline - P("macros"))^0
* P("macros") * space^0 * P("=") * space^0 * C(patterns.letter^1)
-- maybe namespace
local macros = { } resolvers.macros = macros
function macros.preprocessed(str)
return lpegmatch(parser,str)
end
function macros.convertfile(oldname,newname)
local data = resolvers.loadtexfile(oldname)
data = interfaces.preprocessed(data) or ""
io.savedata(newname,data)
end
function macros.version(data)
return lpegmatch(checker,data)
end
function macros.processmkvi(str,filename)
if (filename and file.suffix(filename) == "mkvi") or lpegmatch(checker,str) == "mkvi" then
return lpegmatch(parser,str) or str
else
return str
end
end
if resolvers.schemes then
local function handler(protocol,name,cachename)
local hashed = url.hashed(name)
local path = hashed.path
if path and path ~= "" then
local data = resolvers.loadtexfile(path)
data = lpegmatch(parser,data) or ""
io.savedata(cachename,data)
end
return cachename
end
resolvers.schemes.install('mkvi',handler,1) -- this will cache !
utilities.sequencers.appendaction(resolvers.openers.helpers.textfileactions,"system","resolvers.macros.processmkvi")
-- utilities.sequencers.disableaction(resolvers.openers.helpers.textfileactions,"resolvers.macros.processmkvi")
end
--~ print(macros.preprocessed([[\def\blä#{blá}{blà:#{blá}}]]))
--~ print(macros.preprocessed([[\def\blä#bla{blà:#bla}]]))
--~ print(macros.preprocessed([[\def\bla#bla{bla:#bla}]]))
--~ print(macros.preprocessed([[\def\test#oeps{test:#oeps}]]))
--~ print(macros.preprocessed([[\def\test#oeps{test:#{oeps}}]]))
--~ print(macros.preprocessed([[\def\test#{oeps:1}{test:#{oeps:1}}]]))
--~ print(macros.preprocessed([[\def\test#{oeps}{test:#oeps}]]))
--~ macros.preprocessed([[\def\test#{oeps}{test:#oeps \halign{##\cr #oeps\cr}]])
--~ print(macros.preprocessed([[\def\test#{oeps}{test:#oeps \halign{##\cr #oeps\cr}}]]))
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