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if not modules then modules = { } end modules ['data-ini'] = {
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 next, type, getmetatable, rawset = next, type, getmetatable, rawset
local gsub, find, gmatch, char = string.gsub, string.find, string.gmatch, string.char
local filedirname, filebasename, filejoin = file.dirname, file.basename, file.join
local ostype, osname, osuname, ossetenv, osgetenv = os.type, os.name, os.uname, os.setenv, os.getenv
local P, S, R, C, Cs, Cc, lpegmatch = lpeg.P, lpeg.S, lpeg.R, lpeg.C, lpeg.Cs, lpeg.Cc, lpeg.match
local trace_locating = false trackers.register("resolvers.locating", function(v) trace_locating = v end)
local trace_detail = false trackers.register("resolvers.details", function(v) trace_detail = v end)
local trace_expansions = false trackers.register("resolvers.expansions", function(v) trace_expansions = v end)
local report_initialization = logs.reporter("resolvers","initialization")
-- The code here used to be part of a data-res but for convenience we now split it over multiple
-- files. As this file is now the starting point we introduce resolvers here. We also put some
-- helpers here that later can be reimplemented of extended.
resolvers = resolvers or { }
local resolvers = resolvers
-- We don't want the kpse library to kick in. Also, we want to be able to
-- execute programs. Control over execution is implemented later.
texconfig.kpse_init = false
texconfig.shell_escape = 't'
if not (environment and environment.default_texmfcnf) and kpse and kpse.default_texmfcnf then
local default_texmfcnf = kpse.default_texmfcnf()
-- looks more like context:
default_texmfcnf = gsub(default_texmfcnf,"$SELFAUTOLOC","selfautoloc:")
default_texmfcnf = gsub(default_texmfcnf,"$SELFAUTODIR","selfautodir:")
default_texmfcnf = gsub(default_texmfcnf,"$SELFAUTOPARENT","selfautoparent:")
default_texmfcnf = gsub(default_texmfcnf,"$HOME","home:")
--
environment.default_texmfcnf = default_texmfcnf
end
kpse = { original = kpse }
setmetatable(kpse, {
__index = function(kp,name)
report_initialization("fatal error: kpse library is accessed (key: %s)",name)
os.exit()
end
} )
-- First we check a couple of environment variables. Some might be
-- set already but we need then later on. We start with the system
-- font path.
do
local osfontdir = osgetenv("OSFONTDIR")
if osfontdir and osfontdir ~= "" then
-- ok
elseif osname == "windows" then
ossetenv("OSFONTDIR","c:/windows/fonts//")
elseif osname == "macosx" then
ossetenv("OSFONTDIR","$HOME/Library/Fonts//;/Library/Fonts//;/System/Library/Fonts//")
end
end
-- Next comes the user's home path. We need this as later on we have
-- to replace ~ with its value.
do
local homedir = osgetenv(ostype == "windows" and 'USERPROFILE' or 'HOME') or ''
if not homedir or homedir == "" then
homedir = char(127) -- we need a value, later we wil trigger on it
end
homedir = file.collapsepath(homedir)
ossetenv("HOME", homedir) -- can be used in unix cnf files
ossetenv("USERPROFILE",homedir) -- can be used in windows cnf files
environment.homedir = homedir
end
-- The following code sets the name of the own binary and its
-- path. This is fallback code as we have os.selfdir now.
do
local args = environment.originalarguments or arg -- this needs a cleanup
if not environment.ownmain then
environment.ownmain = status and string.match(string.lower(status.banner),"this is ([%a]+)") or "luatex"
end
local ownbin = environment.ownbin or args[-2] or arg[-2] or args[-1] or arg[-1] or arg[0] or "luatex"
local ownpath = environment.ownpath or os.selfdir
ownbin = file.collapsepath(ownbin)
ownpath = file.collapsepath(ownpath)
if not ownpath or ownpath == "" or ownpath == "unset" then
ownpath = args[-1] or arg[-1]
ownpath = ownpath and filedirname(gsub(ownpath,"\\","/"))
if not ownpath or ownpath == "" then
ownpath = args[-0] or arg[-0]
ownpath = ownpath and filedirname(gsub(ownpath,"\\","/"))
end
local binary = ownbin
if not ownpath or ownpath == "" then
ownpath = ownpath and filedirname(binary)
end
if not ownpath or ownpath == "" then
if os.binsuffix ~= "" then
binary = file.replacesuffix(binary,os.binsuffix)
end
local path = osgetenv("PATH")
if path then
for p in gmatch(path,"[^"..io.pathseparator.."]+") do
local b = filejoin(p,binary)
if lfs.isfile(b) then
-- we assume that after changing to the path the currentdir function
-- resolves to the real location and use this side effect here; this
-- trick is needed because on the mac installations use symlinks in the
-- path instead of real locations
local olddir = lfs.currentdir()
if lfs.chdir(p) then
local pp = lfs.currentdir()
if trace_locating and p ~= pp then
report_initialization("following symlink %a to %a",p,pp)
end
ownpath = pp
lfs.chdir(olddir)
else
if trace_locating then
report_initialization("unable to check path %a",p)
end
ownpath = p
end
break
end
end
end
end
if not ownpath or ownpath == "" then
ownpath = "."
report_initialization("forcing fallback to ownpath %a",ownpath)
elseif trace_locating then
report_initialization("using ownpath %a",ownpath)
end
end
environment.ownbin = ownbin
environment.ownpath = ownpath
end
resolvers.ownpath = environment.ownpath
function resolvers.getownpath()
return environment.ownpath
end
-- The self variables permit us to use only a few (or even no)
-- environment variables.
do
local ownpath = environment.ownpath or dir.current()
if ownpath then
ossetenv('SELFAUTOLOC', file.collapsepath(ownpath))
ossetenv('SELFAUTODIR', file.collapsepath(ownpath .. "/.."))
ossetenv('SELFAUTOPARENT', file.collapsepath(ownpath .. "/../.."))
else
report_initialization("error: unable to locate ownpath")
os.exit()
end
end
-- The running os:
-- todo: check is context sits here os.platform is more trustworthy
-- that the bin check as mtx-update runs from another path
local texos = environment.texos or osgetenv("TEXOS")
local texmfos = environment.texmfos or osgetenv('SELFAUTODIR')
if not texos or texos == "" then
texos = file.basename(texmfos)
end
ossetenv('TEXMFOS', texmfos) -- full bin path
ossetenv('TEXOS', texos) -- partial bin parent
ossetenv('SELFAUTOSYSTEM',os.platform) -- bonus
environment.texos = texos
environment.texmfos = texmfos
-- The current root:
local texroot = environment.texroot or osgetenv("TEXROOT")
if not texroot or texroot == "" then
texroot = osgetenv('SELFAUTOPARENT')
ossetenv('TEXROOT',texroot)
end
environment.texroot = file.collapsepath(texroot)
if type(profiler) == "table" and not jit then
directives.register("system.profile",function()
profiler.start("luatex-profile.log")
end)
end
-- a forward definition
-- Because we use resolvers.resolve a lot later on, we will implement the basics here and
-- add more later.
local prefixes = utilities.storage.allocate()
resolvers.prefixes = prefixes
local resolved = { }
local abstract = { }
local dynamic = { }
function resolvers.resetresolve(str)
resolved, abstract = { }, { }
end
function resolvers.allprefixes(separator)
local all = table.sortedkeys(prefixes)
if separator then
for i=1,#all do
all[i] = all[i] .. ":"
end
end
return all
end
local function _resolve_(method,target)
local action = prefixes[method]
if action then
return action(target)
else
return method .. ":" .. target
end
end
function resolvers.unresolve(str)
return abstract[str] or str
end
function resolvers.setdynamic(str)
dynamic[str] = true
end
-- home:xx;selfautoparent:xx;
local pattern = Cs((C(R("az")^2) * P(":") * C((1-S(" \"\';,"))^1) / _resolve_ + P(1))^0)
local prefix = C(R("az")^2) * P(":")
local target = C((1-S(" \"\';,"))^1)
local notarget = (#S(";,") + P(-1)) * Cc("")
local p_resolve = Cs(((prefix * (target + notarget)) / _resolve_ + P(1))^0)
local p_simple = prefix * P(-1)
local function resolve(str) -- use schemes, this one is then for the commandline only
if type(str) == "table" then
local res = { }
for i=1,#str do
res[i] = resolve(str[i])
end
return res
end
-- already resolved
local res = resolved[str]
if res then
return res
end
-- simple resolving of (dynamic) methods
local simple = lpegmatch(p_simple,str)
local action = prefixes[simple]
if action then
local res = action(res)
if not dynamic[simple] then
resolved[simple] = res
abstract[res] = simple
end
return res
end
-- more extensive resolving (multiple too)
res = lpegmatch(p_resolve,str)
resolved[str] = res
abstract[res] = str
return res
end
resolvers.resolve = resolve
if type(osuname) == "function" then
for k, v in next, osuname() do
if not prefixes[k] then
prefixes[k] = function() return v end
end
end
end
if ostype == "unix" then
-- We need to distringuish between a prefix and something else : so we
-- have a special repath variant for linux. Also, when a new prefix is
-- defined, we need to remake the matcher.
local pattern
local function makepattern(t,k,v)
if t then
rawset(t,k,v)
end
local colon = P(":")
for k, v in table.sortedpairs(prefixes) do
if p then
p = P(k) + p
else
p = P(k)
end
end
pattern = Cs((p * colon + colon/";" + P(1))^0)
end
makepattern()
table.setmetatablenewindex(prefixes,makepattern)
function resolvers.repath(str)
return lpegmatch(pattern,str)
end
else -- already the default:
function resolvers.repath(str)
return str
end
end
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