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if not modules then modules = { } end modules ['data-pre'] = {
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"
}
-- filename : only the basename, including suffix (file:)
-- pathname : the pathpart (path:)
-- locate : lookup in database (full: kpse: loc:)
-- home : home path
-- jobpath : job path
-- relative : relative path ./ ../ ../.. (rel:)
-- auto : relatove or lookup
-- toppath : topmost path in input stack
-- selfautodir : rather tex specific
-- selfautoloc : rather tex specific
-- selfautoparent : rather tex specific
-- environment : expansion of variable (env:)
--
-- nodename : computer name
-- machine : private, when set
-- sysname : operating system name
-- version : operating system version
-- release : operating system release
local resolvers = resolvers
local prefixes = resolvers.prefixes
local cleanpath = resolvers.cleanpath
local findgivenfile = resolvers.findgivenfile
local expansion = resolvers.expansion
local getenv = resolvers.getenv -- we can probably also use resolvers.expansion
local basename = file.basename
local dirname = file.dirname
local joinpath = file.join
local isfile = lfs.isfile
prefixes.environment = function(str)
return cleanpath(expansion(str))
end
local function relative(str,n)
if not isfile(str) then
local pstr = "./" .. str
if isfile(pstr) then
str = pstr
else
local p = "../"
for i=1,n or 2 do
local pstr = p .. str
if isfile(pstr) then
str = pstr
break
else
p = p .. "../"
end
end
end
end
return cleanpath(str)
end
local function locate(str)
local fullname = findgivenfile(str) or ""
return cleanpath(fullname ~= "" and fullname or str)
end
prefixes.relative = relative
prefixes.locate = locate
prefixes.auto = function(str)
local fullname = relative(str)
if not isfile(fullname) then
fullname = locate(str)
end
return fullname
end
prefixes.filename = function(str)
local fullname = findgivenfile(str) or ""
return cleanpath(basename((fullname ~= "" and fullname) or str)) -- no cleanpath needed here
end
prefixes.pathname = function(str)
local fullname = findgivenfile(str) or ""
return cleanpath(dirname((fullname ~= "" and fullname) or str))
end
prefixes.selfautoloc = function(str)
local pth = getenv('SELFAUTOLOC')
return cleanpath(str and joinpath(pth,str) or pth)
end
prefixes.selfautoparent = function(str)
local pth = getenv('SELFAUTOPARENT')
return cleanpath(str and joinpath(pth,str) or pth)
end
prefixes.selfautodir = function(str)
local pth = getenv('SELFAUTODIR')
return cleanpath(str and joinpath(pth,str) or pth)
end
prefixes.home = function(str)
local pth = getenv('HOME')
return cleanpath(str and joinpath(pth,str) or pth)
end
prefixes.env = prefixes.environment
prefixes.rel = prefixes.relative
prefixes.loc = prefixes.locate
prefixes.kpse = prefixes.locate
prefixes.full = prefixes.locate
prefixes.file = prefixes.filename
prefixes.path = prefixes.pathname
-- This one assumes that inputstack is set (used in the tex loader). It is a momentary resolve
-- as the top of the input stack changes.
local function toppath()
local inputstack = resolvers.inputstack -- dependency, actually the code should move but it's
if not inputstack then -- more convenient to keep it here
return "."
end
local pathname = dirname(inputstack[#inputstack] or "")
if pathname == "" then
return "."
else
return pathname
end
end
-- The next variant is similar but bound to explicitly registered paths. Practice should
-- show if that gives the same results as the previous one. It is meant for a project
-- stucture.
local function jobpath()
local path = resolvers.stackpath()
if not path or path == "" then
return "."
else
return path
end
end
resolvers.toppath = toppath
resolvers.jobpath = jobpath
-- This hook sit into the resolver:
prefixes.toppath = function(str) return cleanpath(joinpath(toppath(),str)) end -- str can be nil or empty
prefixes.jobpath = function(str) return cleanpath(joinpath(jobpath(),str)) end -- str can be nil or empty
resolvers.setdynamic("toppath")
resolvers.setdynamic("jobpath")
-- for a while (obsolete):
--
-- prefixes.jobfile = prefixes.jobpath
-- resolvers.setdynamic("jobfile")
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