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|
if not modules then modules = { } end modules ['data-res'] = {
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",
}
-- In practice we will work within one tds tree, but i want to keep
-- the option open to build tools that look at multiple trees, which is
-- why we keep the tree specific data in a table. We used to pass the
-- instance but for practical purposes we now avoid this and use a
-- instance variable. We always have one instance active (sort of global).
-- I will reimplement this module ... way too fuzzy now and we can work
-- with some sensible constraints as it is only is used for context.
-- todo: cache:/// home:/// selfautoparent:/// (sometime end 2012)
local gsub, find, lower, upper, match, gmatch = string.gsub, string.find, string.lower, string.upper, string.match, string.gmatch
local concat, insert, remove, sortedkeys, sortedhash = table.concat, table.insert, table.remove, table.sortedkeys, table.sortedhash
local next, type, rawget = next, type, rawget
local os = os
local P, S, R, C, Cc, Cs, Ct, Carg = lpeg.P, lpeg.S, lpeg.R, lpeg.C, lpeg.Cc, lpeg.Cs, lpeg.Ct, lpeg.Carg
local lpegmatch, lpegpatterns = lpeg.match, lpeg.patterns
local formatters = string.formatters
local filedirname = file.dirname
local filebasename = file.basename
local suffixonly = file.suffixonly
local addsuffix = file.addsuffix
local removesuffix = file.removesuffix
local filejoin = file.join
local collapsepath = file.collapsepath
local joinpath = file.joinpath
local is_qualified_path = file.is_qualified_path
local allocate = utilities.storage.allocate
local settings_to_array = utilities.parsers.settings_to_array
local getcurrentdir = lfs.currentdir
local isfile = lfs.isfile
local isdir = lfs.isdir
local setmetatableindex = table.setmetatableindex
local luasuffixes = utilities.lua.suffixes
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 trace_paths = false trackers .register("resolvers.paths", function(v) trace_paths = v end)
local resolve_otherwise = true directives.register("resolvers.otherwise", function(v) resolve_otherwise = v end)
local report_resolving = logs.reporter("resolvers","resolving")
local resolvers = resolvers
local expandedpathfromlist = resolvers.expandedpathfromlist
local checkedvariable = resolvers.checkedvariable
local splitconfigurationpath = resolvers.splitconfigurationpath
local methodhandler = resolvers.methodhandler
local filtered = resolvers.filtered_from_content
local lookup = resolvers.get_from_content
local cleanpath = resolvers.cleanpath
local resolveprefix = resolvers.resolve
local initializesetter = utilities.setters.initialize
local ostype, osname, osenv, ossetenv, osgetenv = os.type, os.name, os.env, os.setenv, os.getenv
resolvers.cacheversion = "1.100"
resolvers.configbanner = ""
resolvers.homedir = environment.homedir
resolvers.criticalvars = allocate { "SELFAUTOLOC", "SELFAUTODIR", "SELFAUTOPARENT", "TEXMFCNF", "TEXMF", "TEXOS" }
resolvers.luacnfname = "texmfcnf.lua"
resolvers.luacnfstate = "unknown"
-- The web2c tex binaries as well as kpse have built in paths for the configuration
-- files and there can be a depressing truckload of them. This is actually the weak
-- spot of a distribution. So we don't want:
--
-- resolvers.luacnfspec = '{$SELFAUTODIR,$SELFAUTOPARENT}{,{/share,}/texmf{-local,}/web2c}'
--
-- but instead (for instance) use:
--
-- resolvers.luacnfspec = 'selfautoparent:{/texmf{-local,}{,/web2c}}'
--
-- which does not make texlive happy as there is a texmf-local tree one level up
-- (sigh), so we need this. We can assume web2c as mkiv does not run on older
-- texlives anyway.
--
-- texlive:
--
-- selfautoloc:
-- selfautoloc:/share/texmf-local/web2c
-- selfautoloc:/share/texmf-dist/web2c
-- selfautoloc:/share/texmf/web2c
-- selfautoloc:/texmf-local/web2c
-- selfautoloc:/texmf-dist/web2c
-- selfautoloc:/texmf/web2c
-- selfautodir:
-- selfautodir:/share/texmf-local/web2c
-- selfautodir:/share/texmf-dist/web2c
-- selfautodir:/share/texmf/web2c
-- selfautodir:/texmf-local/web2c
-- selfautodir:/texmf-dist/web2c
-- selfautodir:/texmf/web2c
-- selfautoparent:/../texmf-local/web2c
-- selfautoparent:
-- selfautoparent:/share/texmf-local/web2c
-- selfautoparent:/share/texmf-dist/web2c
-- selfautoparent:/share/texmf/web2c
-- selfautoparent:/texmf-local/web2c
-- selfautoparent:/texmf-dist/web2c
-- selfautoparent:/texmf/web2c
--
-- minimals:
--
-- home:texmf/web2c
-- selfautoparent:texmf-local/web2c
-- selfautoparent:texmf-context/web2c
-- selfautoparent:texmf/web2c
-- This is a real mess: you don't want to know what creepy paths end up in the default
-- configuration spec, for instance nested texmf- paths. I'd rather get away from it and
-- specify a proper search sequence but alas ... it is not permitted in texlive and there
-- is no way to check if we run a minimals as texmf-context is not in that spec. It's a
-- compiled-in permutation of historics with the selfautoloc, selfautodir, selfautoparent
-- resulting in weird combinations. So, when we eventually check the 30 something paths
-- we also report weird ones, with weird being: (1) duplicate /texmf or (2) no /web2c in
-- the names.
if environment.default_texmfcnf then
resolvers.luacnfspec = "home:texmf/web2c;" .. environment.default_texmfcnf -- texlive + home: for taco etc
else
resolvers.luacnfspec = concat ( {
"home:texmf/web2c",
"selfautoparent:/texmf-local/web2c",
"selfautoparent:/texmf-context/web2c",
"selfautoparent:/texmf-dist/web2c",
"selfautoparent:/texmf/web2c",
}, ";")
end
local unset_variable = "unset"
local formats = resolvers.formats
local suffixes = resolvers.suffixes
local usertypes = resolvers.usertypes
local dangerous = resolvers.dangerous
local suffixmap = resolvers.suffixmap
resolvers.defaultsuffixes = { "tex" } -- "mkiv", "cld" -- too tricky
resolvers.instance = resolvers.instance or nil -- the current one (slow access)
local instance = resolvers.instance or nil -- the current one (fast access)
-- An instance has an environment (coming from the outside, kept raw), variables
-- (coming from the configuration file), and expansions (variables with nested
-- variables replaced). One can push something into the outer environment and
-- its internal copy, but only the later one will be the raw unprefixed variant.
function resolvers.setenv(key,value,raw)
if instance then
-- this one will be consulted first when we stay inside
-- the current environment (prefixes are not resolved here)
instance.environment[key] = value
-- we feed back into the environment, and as this is used
-- by other applications (via os.execute) we need to make
-- sure that prefixes are resolve
ossetenv(key,raw and value or resolveprefix(value))
end
end
-- Beware we don't want empty here as this one can be called early on
-- and therefore we use rawget.
local function getenv(key)
local value = rawget(instance.environment,key)
if value and value ~= "" then
return value
else
local e = osgetenv(key)
return e ~= nil and e ~= "" and checkedvariable(e) or ""
end
end
resolvers.getenv = getenv
resolvers.env = getenv
-- We are going to use some metatable trickery where we backtrack from
-- expansion to variable to environment.
local function resolvevariable(k)
return instance.expansions[k]
end
local dollarstripper = lpeg.stripper("$")
local inhibitstripper = P("!")^0 * Cs(P(1)^0)
local backslashswapper = lpeg.replacer("\\","/")
local somevariable = P("$") / ""
local somekey = C(R("az","AZ","09","__","--")^1)
local somethingelse = P(";") * ((1-S("!{}/\\"))^1 * P(";") / "")
+ P(";") * (P(";") / "")
+ P(1)
local variableexpander = Cs( (somevariable * (somekey/resolvevariable) + somethingelse)^1 )
local cleaner = P("\\") / "/" + P(";") * S("!{}/\\")^0 * P(";")^1 / ";"
local variablecleaner = Cs((cleaner + P(1))^0)
local somevariable = R("az","AZ","09","__","--")^1 / resolvevariable
local variable = (P("$")/"") * (somevariable + (P("{")/"") * somevariable * (P("}")/""))
local variableresolver = Cs((variable + P(1))^0)
local function expandedvariable(var)
return lpegmatch(variableexpander,var) or var
end
function resolvers.newinstance() -- todo: all vars will become lowercase and alphanum only
-- normally we only need one instance but for special cases we can (re)load one so
-- we stick to this model.
if trace_locating then
report_resolving("creating instance")
end
local environment, variables, expansions, order = allocate(), allocate(), allocate(), allocate()
local newinstance = {
environment = environment,
variables = variables,
expansions = expansions,
order = order,
files = allocate(),
setups = allocate(),
found = allocate(),
foundintrees = allocate(),
hashes = allocate(),
hashed = allocate(),
pathlists = false,-- delayed
specification = allocate(),
lists = allocate(),
data = allocate(), -- only for loading
fakepaths = allocate(),
remember = true,
diskcache = true,
renewcache = false,
renewtree = false,
loaderror = false,
savelists = true,
pattern = nil, -- lists
force_suffixes = true,
pathstack = { },
}
setmetatableindex(variables,function(t,k)
local v
for i=1,#order do
v = order[i][k]
if v ~= nil then
t[k] = v
return v
end
end
if v == nil then
v = ""
end
t[k] = v
return v
end)
setmetatableindex(environment, function(t,k)
local v = osgetenv(k)
if v == nil then
v = variables[k]
end
if v ~= nil then
v = checkedvariable(v) or ""
end
v = resolvers.repath(v) -- for taco who has a : separated osfontdir
t[k] = v
return v
end)
setmetatableindex(expansions, function(t,k)
local v = environment[k]
if type(v) == "string" then
v = lpegmatch(variableresolver,v)
v = lpegmatch(variablecleaner,v)
end
t[k] = v
return v
end)
return newinstance
end
function resolvers.setinstance(someinstance) -- only one instance is active
instance = someinstance
resolvers.instance = someinstance
return someinstance
end
function resolvers.reset()
return resolvers.setinstance(resolvers.newinstance())
end
local function reset_hashes()
instance.lists = { }
instance.pathlists = false
instance.found = { }
end
local function reset_caches()
instance.lists = { }
instance.pathlists = false
end
local slash = P("/")
local pathexpressionpattern = Cs ( -- create lpeg instead (2013/2014)
Cc("^") * (
Cc("%") * S(".-")
+ slash^2 * P(-1) / "/.*"
-- + slash^2 / "/.-/"
-- + slash^2 / "/[^/]*/*" -- too general
+ slash^2 / "/"
+ (1-slash) * P(-1) * Cc("/")
+ P(1)
)^1 * Cc("$") -- yes or no $
)
local cache = { }
local function makepathexpression(str)
if str == "." then
return "^%./$"
else
local c = cache[str]
if not c then
c = lpegmatch(pathexpressionpattern,str)
cache[str] = c
end
return c
end
end
local function reportcriticalvariables(cnfspec)
if trace_locating then
for i=1,#resolvers.criticalvars do
local k = resolvers.criticalvars[i]
local v = resolvers.getenv(k) or "unknown" -- this one will not resolve !
report_resolving("variable %a set to %a",k,v)
end
report_resolving()
if cnfspec then
report_resolving("using configuration specification %a",type(cnfspec) == "table" and concat(cnfspec,",") or cnfspec)
end
report_resolving()
end
reportcriticalvariables = function() end
end
local function identify_configuration_files()
local specification = instance.specification
if #specification == 0 then
local cnfspec = getenv("TEXMFCNF")
if cnfspec == "" then
cnfspec = resolvers.luacnfspec
resolvers.luacnfstate = "default"
else
resolvers.luacnfstate = "environment"
end
reportcriticalvariables(cnfspec)
local cnfpaths = expandedpathfromlist(resolvers.splitpath(cnfspec))
local luacnfname = resolvers.luacnfname
for i=1,#cnfpaths do
local filepath = cnfpaths[i]
local filename = collapsepath(filejoin(filepath,luacnfname))
local realname = resolveprefix(filename) -- can still have "//" ... needs checking
-- todo: environment.skipweirdcnfpaths directive
if trace_locating then
local fullpath = gsub(resolveprefix(collapsepath(filepath)),"//","/")
local weirdpath = find(fullpath,"/texmf.+/texmf") or not find(fullpath,"/web2c",1,true)
report_resolving("looking for %a on %s path %a from specification %a",luacnfname,weirdpath and "weird" or "given",fullpath,filepath)
end
if isfile(realname) then
specification[#specification+1] = filename -- unresolved as we use it in matching, relocatable
if trace_locating then
report_resolving("found configuration file %a",realname)
end
end
end
if trace_locating then
report_resolving()
end
elseif trace_locating then
report_resolving("configuration files already identified")
end
end
local function load_configuration_files()
local specification = instance.specification
if #specification > 0 then
local luacnfname = resolvers.luacnfname
for i=1,#specification do
local filename = specification[i]
local pathname = filedirname(filename)
local filename = filejoin(pathname,luacnfname)
local realname = resolveprefix(filename) -- no shortcut
local blob = loadfile(realname)
if blob then
local setups = instance.setups
local data = blob()
local parent = data and data.parent
if parent then
local filename = filejoin(pathname,parent)
local realname = resolveprefix(filename) -- no shortcut
local blob = loadfile(realname)
if blob then
local parentdata = blob()
if parentdata then
report_resolving("loading configuration file %a",filename)
data = table.merged(parentdata,data)
end
end
end
data = data and data.content
if data then
if trace_locating then
report_resolving("loading configuration file %a",filename)
report_resolving()
end
local variables = data.variables or { }
local warning = false
for k, v in next, data do
local variant = type(v)
if variant == "table" then
initializesetter(filename,k,v)
elseif variables[k] == nil then
if trace_locating and not warning then
report_resolving("variables like %a in configuration file %a should move to the 'variables' subtable",
k,resolveprefix(filename))
warning = true
end
variables[k] = v
end
end
setups[pathname] = variables
if resolvers.luacnfstate == "default" then
-- the following code is not tested
local cnfspec = variables["TEXMFCNF"]
if cnfspec then
if trace_locating then
report_resolving("reloading configuration due to TEXMF redefinition")
end
-- we push the value into the main environment (osenv) so
-- that it takes precedence over the default one and therefore
-- also over following definitions
resolvers.setenv("TEXMFCNF",cnfspec) -- resolves prefixes
-- we now identify and load the specified configuration files
instance.specification = { }
identify_configuration_files()
load_configuration_files()
-- we prevent further overload of the configuration variable
resolvers.luacnfstate = "configuration"
-- we quit the outer loop
break
end
end
else
if trace_locating then
report_resolving("skipping configuration file %a (no content)",filename)
end
setups[pathname] = { }
instance.loaderror = true
end
elseif trace_locating then
report_resolving("skipping configuration file %a (no valid format)",filename)
end
instance.order[#instance.order+1] = instance.setups[pathname]
if instance.loaderror then
break
end
end
elseif trace_locating then
report_resolving("warning: no lua configuration files found")
end
end
-- scheme magic ... database loading
local function load_file_databases()
instance.loaderror, instance.files = false, allocate()
if not instance.renewcache then
local hashes = instance.hashes
for k=1,#hashes do
local hash = hashes[k]
resolvers.hashers.byscheme(hash.type,hash.name)
if instance.loaderror then break end
end
end
end
local function locate_file_databases()
-- todo: cache:// and tree:// (runtime)
local texmfpaths = resolvers.expandedpathlist("TEXMF")
if #texmfpaths > 0 then
for i=1,#texmfpaths do
local path = collapsepath(texmfpaths[i])
path = gsub(path,"/+$","") -- in case $HOME expands to something with a trailing /
local stripped = lpegmatch(inhibitstripper,path) -- the !! thing
if stripped ~= "" then
local runtime = stripped == path
path = cleanpath(path)
local spec = resolvers.splitmethod(stripped)
if runtime and (spec.noscheme or spec.scheme == "file") then
stripped = "tree:///" .. stripped
elseif spec.scheme == "cache" or spec.scheme == "file" then
stripped = spec.path
end
if trace_locating then
if runtime then
report_resolving("locating list of %a (runtime) (%s)",path,stripped)
else
report_resolving("locating list of %a (cached)",path)
end
end
methodhandler('locators',stripped)
end
end
if trace_locating then
report_resolving()
end
elseif trace_locating then
report_resolving("no texmf paths are defined (using TEXMF)")
end
end
local function generate_file_databases()
local hashes = instance.hashes
for k=1,#hashes do
local hash = hashes[k]
methodhandler('generators',hash.name)
end
if trace_locating then
report_resolving()
end
end
local function save_file_databases() -- will become cachers
for i=1,#instance.hashes do
local hash = instance.hashes[i]
local cachename = hash.name
if hash.cache then
local content = instance.files[cachename]
caches.collapsecontent(content)
if trace_locating then
report_resolving("saving tree %a",cachename)
end
caches.savecontent(cachename,"files",content)
elseif trace_locating then
report_resolving("not saving runtime tree %a",cachename)
end
end
end
function resolvers.renew(hashname)
if hashname and hashname ~= "" then
local expanded = resolvers.expansion(hashname) or ""
if expanded ~= "" then
if trace_locating then
report_resolving("identifying tree %a from %a",expanded,hashname)
end
hashname = expanded
else
if trace_locating then
report_resolving("identifying tree %a",hashname)
end
end
local realpath = resolveprefix(hashname)
if isdir(realpath) then
if trace_locating then
report_resolving("using path %a",realpath)
end
methodhandler('generators',hashname)
-- could be shared
local content = instance.files[hashname]
caches.collapsecontent(content)
if trace_locating then
report_resolving("saving tree %a",hashname)
end
caches.savecontent(hashname,"files",content)
-- till here
else
report_resolving("invalid path %a",realpath)
end
end
end
local function load_databases()
locate_file_databases()
if instance.diskcache and not instance.renewcache then
load_file_databases()
if instance.loaderror then
generate_file_databases()
save_file_databases()
end
else
generate_file_databases()
if instance.renewcache then
save_file_databases()
end
end
end
function resolvers.appendhash(type,name,cache)
-- safeguard ... tricky as it's actually a bug when seen twice
if not instance.hashed[name] then
if trace_locating then
report_resolving("hash %a appended",name)
end
insert(instance.hashes, { type = type, name = name, cache = cache } )
instance.hashed[name] = cache
end
end
function resolvers.prependhash(type,name,cache)
-- safeguard ... tricky as it's actually a bug when seen twice
if not instance.hashed[name] then
if trace_locating then
report_resolving("hash %a prepended",name)
end
insert(instance.hashes, 1, { type = type, name = name, cache = cache } )
instance.hashed[name] = cache
end
end
function resolvers.extendtexmfvariable(specification) -- crap, we could better prepend the hash
local t = resolvers.splitpath(getenv("TEXMF")) -- okay?
insert(t,1,specification)
local newspec = concat(t,",") -- not ;
if instance.environment["TEXMF"] then
instance.environment["TEXMF"] = newspec
elseif instance.variables["TEXMF"] then
instance.variables["TEXMF"] = newspec
else
-- weird
end
reset_hashes()
end
function resolvers.splitexpansions()
local ie = instance.expansions
for k,v in next, ie do
local t, tn, h, p = { }, 0, { }, splitconfigurationpath(v)
for kk=1,#p do
local vv = p[kk]
if vv ~= "" and not h[vv] then
tn = tn + 1
t[tn] = vv
h[vv] = true
end
end
if #t > 1 then
ie[k] = t
else
ie[k] = t[1]
end
end
end
-- end of split/join code
-- we used to have 'files' and 'configurations' so therefore the following
-- shared function
function resolvers.datastate()
return caches.contentstate()
end
function resolvers.variable(name)
local name = name and lpegmatch(dollarstripper,name)
local result = name and instance.variables[name]
return result ~= nil and result or ""
end
function resolvers.expansion(name)
local name = name and lpegmatch(dollarstripper,name)
local result = name and instance.expansions[name]
return result ~= nil and result or ""
end
function resolvers.unexpandedpathlist(str)
local pth = resolvers.variable(str)
local lst = resolvers.splitpath(pth)
return expandedpathfromlist(lst)
end
function resolvers.unexpandedpath(str)
return joinpath(resolvers.unexpandedpathlist(str))
end
function resolvers.pushpath(name)
local pathstack = instance.pathstack
local lastpath = pathstack[#pathstack]
local pluspath = filedirname(name)
if lastpath then
lastpath = collapsepath(filejoin(lastpath,pluspath))
else
lastpath = collapsepath(pluspath)
end
insert(pathstack,lastpath)
if trace_paths then
report_resolving("pushing path %a",lastpath)
end
end
function resolvers.poppath()
local pathstack = instance.pathstack
if trace_paths and #pathstack > 0 then
report_resolving("popping path %a",pathstack[#pathstack])
end
remove(pathstack)
end
function resolvers.stackpath()
local pathstack = instance.pathstack
local currentpath = pathstack[#pathstack]
return currentpath ~= "" and currentpath or nil
end
local done = { }
function resolvers.resetextrapath()
local ep = instance.extra_paths
if not ep then
done = { }
instance.extra_paths = { }
elseif #ep > 0 then
done = { }
reset_caches()
end
end
function resolvers.registerextrapath(paths,subpaths)
if not subpaths or subpaths == "" then
if not paths or path == "" then
return -- invalid spec
elseif done[paths] then
return -- already done
end
end
local paths = settings_to_array(paths)
local subpaths = settings_to_array(subpaths)
local ep = instance.extra_paths or { }
local oldn = #ep
local newn = oldn
local nofpaths = #paths
local nofsubpaths = #subpaths
if nofpaths > 0 then
if nofsubpaths > 0 then
for i=1,nofpaths do
local p = paths[i]
for j=1,nofsubpaths do
local s = subpaths[j]
local ps = p .. "/" .. s
if not done[ps] then
newn = newn + 1
ep[newn] = cleanpath(ps)
done[ps] = true
end
end
end
else
for i=1,nofpaths do
local p = paths[i]
if not done[p] then
newn = newn + 1
ep[newn] = cleanpath(p)
done[p] = true
end
end
end
elseif nofsubpaths > 0 then
for i=1,oldn do
for j=1,nofsubpaths do
local s = subpaths[j]
local ps = ep[i] .. "/" .. s
if not done[ps] then
newn = newn + 1
ep[newn] = cleanpath(ps)
done[ps] = true
end
end
end
end
if newn > 0 then
instance.extra_paths = ep -- register paths
end
if newn ~= oldn then
reset_caches()
end
end
function resolvers.pushextrapath(path)
local paths = settings_to_array(path)
if instance.extra_stack then
insert(instance.extra_stack,1,paths)
else
instance.extra_stack = { paths }
end
reset_caches()
end
function resolvers.popextrapath()
if instance.extra_stack then
reset_caches()
return remove(instance.extra_stack,1)
end
end
local function made_list(instance,list,extra_too)
local done = { }
local new = { }
local newn = 0
-- a helper
local function add(p)
for k=1,#p do
local v = p[k]
if not done[v] then
done[v] = true
newn = newn + 1
new[newn] = v
end
end
end
-- honour . .. ../.. but only when at the start
for k=1,#list do
local v = list[k]
if done[v] then
-- skip
elseif find(v,"^[%.%/]$") then
done[v] = true
newn = newn + 1
new[newn] = v
else
break
end
end
if extra_too then
-- first the stacked paths
local es = instance.extra_stack
if es and #es > 0 then
for k=1,#es do
add(es[k])
end
end
-- then the extra paths
local ep = instance.extra_paths
if ep and #ep > 0 then
add(ep)
end
end
-- last the formal paths
add(list)
return new
end
function resolvers.cleanpathlist(str)
local t = resolvers.expandedpathlist(str)
if t then
for i=1,#t do
t[i] = collapsepath(cleanpath(t[i]))
end
end
return t
end
function resolvers.expandpath(str)
return joinpath(resolvers.expandedpathlist(str))
end
function resolvers.expandedpathlist(str,extra_too)
if not str then
return { }
elseif instance.savelists then -- hm, what if two cases, with and without extra_too
str = lpegmatch(dollarstripper,str)
local lists = instance.lists
local lst = lists[str]
if not lst then
local l = made_list(instance,resolvers.splitpath(resolvers.expansion(str)),extra_too)
lst = expandedpathfromlist(l)
lists[str] = lst
end
return lst
else
local lst = resolvers.splitpath(resolvers.expansion(str))
return made_list(instance,expandedpathfromlist(lst),extra_too)
end
end
function resolvers.expandedpathlistfromvariable(str) -- brrr / could also have cleaner ^!! /$ //
str = lpegmatch(dollarstripper,str)
local tmp = resolvers.variableofformatorsuffix(str)
return resolvers.expandedpathlist(tmp ~= "" and tmp or str)
end
function resolvers.expandpathfromvariable(str)
return joinpath(resolvers.expandedpathlistfromvariable(str))
end
function resolvers.cleanedpathlist(v) -- can be cached if needed
local t = resolvers.expandedpathlist(v)
for i=1,#t do
t[i] = resolvers.resolve(resolvers.cleanpath(t[i]))
end
return t
end
function resolvers.expandbraces(str) -- output variable and brace expansion of STRING
-- local ori = resolvers.variable(str)
-- if ori == "" then
local ori = str
-- end
local pth = expandedpathfromlist(resolvers.splitpath(ori))
return joinpath(pth)
end
function resolvers.registerfilehash(name,content,someerror)
if content then
instance.files[name] = content
else
instance.files[name] = { }
if somerror == true then -- can be unset
instance.loaderror = someerror
end
end
end
local function isreadable(name)
local readable = isfile(name) -- not file.is_readable(name) asit can be a dir
if trace_detail then
if readable then
report_resolving("file %a is readable",name)
else
report_resolving("file %a is not readable", name)
end
end
return readable
end
-- name | name/name
local function collect_files(names) -- potential files .. sort of too much when asking for just one file
local filelist = { } -- but we need it for pattern matching later on
local noffiles = 0
local function check(hash,root,pathname,path,name)
if not pathname or find(path,pathname) then
local variant = hash.type
local search = filejoin(root,path,name) -- funny no concatinator
local result = methodhandler('concatinators',variant,root,path,name)
if trace_detail then
report_resolving("match: variant %a, search %a, result %a",variant,search,result)
end
noffiles = noffiles + 1
filelist[noffiles] = { variant, search, result }
end
end
for k=1,#names do
local filename = names[k]
if trace_detail then
report_resolving("checking name %a",filename)
end
local basename = filebasename(filename)
local pathname = filedirname(filename)
if pathname == "" or find(pathname,"^%.") then
pathname = false
else
pathname = gsub(pathname,"%*",".*")
pathname = "/" .. pathname .. "$"
end
local hashes = instance.hashes
for h=1,#hashes do
local hash = hashes[h]
local hashname = hash.name
local content = hashname and instance.files[hashname]
if content then
if trace_detail then
report_resolving("deep checking %a, base %a, pattern %a",hashname,basename,pathname)
end
local path, name = lookup(content,basename)
if path then
local metadata = content.metadata
local realroot = metadata and metadata.path or hashname
if type(path) == "string" then
check(hash,realroot,pathname,path,name)
else
for i=1,#path do
check(hash,realroot,pathname,path[i],name)
end
end
end
elseif trace_locating then
report_resolving("no match in %a (%s)",hashname,basename)
end
end
end
return noffiles > 0 and filelist or nil
end
local fit = { }
function resolvers.registerintrees(filename,format,filetype,usedmethod,foundname)
local foundintrees = instance.foundintrees
if usedmethod == "direct" and filename == foundname and fit[foundname] then
-- just an extra lookup after a test on presence
else
local t = {
filename = filename,
format = format ~= "" and format or nil,
filetype = filetype ~= "" and filetype or nil,
usedmethod = usedmethod,
foundname = foundname,
}
fit[foundname] = t
foundintrees[#foundintrees+1] = t
end
end
-- split the next one up for readability (but this module needs a cleanup anyway)
local function can_be_dir(name) -- can become local
local fakepaths = instance.fakepaths
if not fakepaths[name] then
if isdir(name) then
fakepaths[name] = 1 -- directory
else
fakepaths[name] = 2 -- no directory
end
end
return fakepaths[name] == 1
end
local preparetreepattern = Cs((P(".")/"%%." + P("-")/"%%-" + P(1))^0 * Cc("$"))
-- -- -- begin of main file search routing -- -- -- needs checking as previous has been patched
local collect_instance_files
local function find_analyze(filename,askedformat,allresults)
local filetype, wantedfiles, ext = '', { }, suffixonly(filename)
-- too tricky as filename can be bla.1.2.3:
--
-- if not suffixmap[ext] then
-- wantedfiles[#wantedfiles+1] = filename
-- end
wantedfiles[#wantedfiles+1] = filename
if askedformat == "" then
if ext == "" or not suffixmap[ext] then
local defaultsuffixes = resolvers.defaultsuffixes
local formatofsuffix = resolvers.formatofsuffix
for i=1,#defaultsuffixes do
local forcedname = filename .. '.' .. defaultsuffixes[i]
wantedfiles[#wantedfiles+1] = forcedname
filetype = formatofsuffix(forcedname)
if trace_locating then
report_resolving("forcing filetype %a",filetype)
end
end
else
filetype = resolvers.formatofsuffix(filename)
if trace_locating then
report_resolving("using suffix based filetype %a",filetype)
end
end
else
if ext == "" or not suffixmap[ext] then
local format_suffixes = suffixes[askedformat]
if format_suffixes then
for i=1,#format_suffixes do
wantedfiles[#wantedfiles+1] = filename .. "." .. format_suffixes[i]
end
end
end
filetype = askedformat
if trace_locating then
report_resolving("using given filetype %a",filetype)
end
end
return filetype, wantedfiles
end
local function find_direct(filename,allresults)
if not dangerous[askedformat] and isreadable(filename) then
if trace_detail then
report_resolving("file %a found directly",filename)
end
return "direct", { filename }
end
end
local function find_wildcard(filename,allresults)
if find(filename,'*',1,true) then
if trace_locating then
report_resolving("checking wildcard %a", filename)
end
local result = resolvers.findwildcardfiles(filename)
if result then
return "wildcard", result
end
end
end
local function find_qualified(filename,allresults,askedformat,alsostripped) -- this one will be split too
if not is_qualified_path(filename) then
return
end
if trace_locating then
report_resolving("checking qualified name %a", filename)
end
if isreadable(filename) then
if trace_detail then
report_resolving("qualified file %a found", filename)
end
return "qualified", { filename }
end
if trace_detail then
report_resolving("locating qualified file %a", filename)
end
local forcedname, suffix = "", suffixonly(filename)
if suffix == "" then -- why
local format_suffixes = askedformat == "" and resolvers.defaultsuffixes or suffixes[askedformat]
if format_suffixes then
for i=1,#format_suffixes do
local s = format_suffixes[i]
forcedname = filename .. "." .. s
if isreadable(forcedname) then
if trace_locating then
report_resolving("no suffix, forcing format filetype %a", s)
end
return "qualified", { forcedname }
end
end
end
end
if alsostripped and suffix and suffix ~= "" then
-- try to find in tree (no suffix manipulation), here we search for the
-- matching last part of the name
local basename = filebasename(filename)
local pattern = lpegmatch(preparetreepattern,filename)
-- messy .. to be sorted out
local savedformat = askedformat
local format = savedformat or ""
if format == "" then
askedformat = resolvers.formatofsuffix(suffix)
end
if not format then
askedformat = "othertextfiles" -- kind of everything, maybe all
end
--
-- is this really what we want? basename if we have an explicit path?
--
if basename ~= filename then
local resolved = collect_instance_files(basename,askedformat,allresults)
if #resolved == 0 then
local lowered = lower(basename)
if filename ~= lowered then
resolved = collect_instance_files(lowered,askedformat,allresults)
end
end
resolvers.format = savedformat
--
if #resolved > 0 then
local result = { }
for r=1,#resolved do
local rr = resolved[r]
if find(rr,pattern) then
result[#result+1] = rr
end
end
if #result > 0 then
return "qualified", result
end
end
end
-- a real wildcard:
--
-- local filelist = collect_files({basename})
-- result = { }
-- for f=1,#filelist do
-- local ff = filelist[f][3] or ""
-- if find(ff,pattern) then
-- result[#result+1], ok = ff, true
-- end
-- end
-- if #result > 0 then
-- return "qualified", result
-- end
end
end
local function check_subpath(fname)
if isreadable(fname) then
if trace_detail then
report_resolving("found %a by deep scanning",fname)
end
return fname
end
end
-- this caching is not really needed (seldom accessed) but more readable
-- we could probably move some to a higher level but then we need to adapt
-- more code ... maybe some day
local function makepathlist(list,filetype)
local typespec = resolvers.variableofformat(filetype)
local pathlist = resolvers.expandedpathlist(typespec,filetype and usertypes[filetype]) -- only extra path with user files
local entry = { }
if pathlist and #pathlist > 0 then
for k=1,#pathlist do
local path = pathlist[k]
local prescanned = find(path,'^!!')
local resursive = find(path,'//$')
local pathname = lpegmatch(inhibitstripper,path)
local expression = makepathexpression(pathname)
local barename = gsub(pathname,"/+$","")
barename = resolveprefix(barename)
local scheme = url.hasscheme(barename)
local schemename = gsub(barename,"%.%*$",'') -- after scheme
-- local prescanned = path ~= pathname -- ^!!
-- local resursive = find(pathname,'//$')
entry[k] = {
path = path,
pathname = pathname,
prescanned = prescanned,
recursive = recursive,
expression = expression,
barename = barename,
scheme = scheme,
schemename = schemename,
}
end
entry.typespec = typespec
list[filetype] = entry
else
list[filetype] = false
end
return entry
end
-- pathlist : resolved
-- dirlist : unresolved or resolved
-- filelist : unresolved
local function find_intree(filename,filetype,wantedfiles,allresults)
local pathlists = instance.pathlists
if not pathlists then
pathlists = setmetatableindex(allocate(),makepathlist)
instance.pathlists = pathlists
end
local pathlist = pathlists[filetype]
if pathlist then
-- list search
local method = "intree"
local filelist = collect_files(wantedfiles) -- okay, a bit over the top when we just look relative to the current path
local dirlist = { }
local result = { }
if filelist then
for i=1,#filelist do
dirlist[i] = filedirname(filelist[i][3]) .. "/" -- was [2] .. gamble
end
end
if trace_detail then
report_resolving("checking filename %a in tree",filename)
end
for k=1,#pathlist do
local entry = pathlist[k]
local path = entry.path
local pathname = entry.pathname
local done = false
-- using file list
if filelist then -- database
-- compare list entries with permitted pattern -- /xx /xx//
local expression = entry.expression
if trace_detail then
report_resolving("using pattern %a for path %a",expression,pathname)
end
for k=1,#filelist do
local fl = filelist[k]
local f = fl[2]
local d = dirlist[k]
-- resolve is new:
if find(d,expression) or find(resolveprefix(d),expression) then
-- todo, test for readable
result[#result+1] = resolveprefix(fl[3]) -- no shortcut
done = true
if allresults then
if trace_detail then
report_resolving("match to %a in hash for file %a and path %a, continue scanning",expression,f,d)
end
else
if trace_detail then
report_resolving("match to %a in hash for file %a and path %a, quit scanning",expression,f,d)
end
break
end
elseif trace_detail then
report_resolving("no match to %a in hash for file %a and path %a",expression,f,d)
end
end
end
if done then
method = "database"
else
-- beware: we don't honor allresults here in a next attempt (done false)
-- but that is kind of special anyway
method = "filesystem" -- bonus, even when !! is specified
local scheme = entry.scheme
if not scheme or scheme == "file" then
local pname = entry.schemename
if not find(pname,"*",1,true) then
if can_be_dir(pname) then
-- hm, rather useless as we don't go deeper and if we would we could also
-- auto generate the file database .. however, we need this for extra paths
-- that are not hashed (like sources on my machine) .. so, this is slightly
-- out of order but at least fast (and we seldom end up here, only when a file
-- is not already found
-- inspect(entry)
if not done and not entry.prescanned then
if trace_detail then
report_resolving("quick root scan for %a",pname)
end
for k=1,#wantedfiles do
local w = wantedfiles[k]
local fname = check_subpath(filejoin(pname,w))
if fname then
result[#result+1] = fname
done = true
if not allresults then
break
end
end
end
if not done and entry.recursive then -- maybe also when allresults
-- collect files in path (and cache the result)
if trace_detail then
report_resolving("scanning filesystem for %a",pname)
end
local files = resolvers.simplescanfiles(pname,false,true)
for k=1,#wantedfiles do
local w = wantedfiles[k]
local subpath = files[w]
if not subpath or subpath == "" then
-- rootscan already done
elseif type(subpath) == "string" then
local fname = check_subpath(filejoin(pname,subpath,w))
if fname then
result[#result+1] = fname
done = true
if not allresults then
break
end
end
else
for i=1,#subpath do
local sp = subpath[i]
if sp == "" then
-- roottest already done
else
local fname = check_subpath(filejoin(pname,sp,w))
if fname then
result[#result+1] = fname
done = true
if not allresults then
break
end
end
end
end
if done and not allresults then
break
end
end
end
end
end
end
else
-- no access needed for non existing path, speedup (esp in large tree with lots of fake)
end
else
-- we can have extra_paths that are urls
for k=1,#wantedfiles do
-- independent url scanner
local pname = entry.barename
local fname = methodhandler('finders',pname .. "/" .. wantedfiles[k])
if fname then
result[#result+1] = fname
done = true
if not allresults then
break
end
end
end
end
end
-- todo recursive scanning
if done and not allresults then
break
end
end
if #result > 0 then
return method, result
end
end
end
local function find_onpath(filename,filetype,wantedfiles,allresults)
if trace_detail then
report_resolving("checking filename %a, filetype %a, wanted files %a",filename,filetype,concat(wantedfiles," | "))
end
local result = { }
for k=1,#wantedfiles do
local fname = wantedfiles[k]
if fname and isreadable(fname) then
filename = fname
result[#result+1] = filejoin('.',fname)
if not allresults then
break
end
end
end
if #result > 0 then
return "onpath", result
end
end
local function find_otherwise(filename,filetype,wantedfiles,allresults) -- other text files | any | whatever
local filelist = collect_files(wantedfiles)
local fl = filelist and filelist[1]
if fl then
return "otherwise", { resolveprefix(fl[3]) } -- filename
end
end
-- we could have a loop over the 6 functions but then we'd have to
-- always analyze .. todo: use url split
collect_instance_files = function(filename,askedformat,allresults) -- uses nested
if not filename or filename == "" then
return { }
end
askedformat = askedformat or ""
filename = collapsepath(filename,".")
filename = gsub(filename,"^%./",getcurrentdir().."/") -- we will merge dir.expandname and collapse some day
if allresults then
-- no need for caching, only used for tracing
local filetype, wantedfiles = find_analyze(filename,askedformat)
local results = {
{ find_direct (filename,true) },
{ find_wildcard (filename,true) },
{ find_qualified(filename,true,askedformat) }, -- we can add ,true if we want to find dups
{ find_intree (filename,filetype,wantedfiles,true) },
{ find_onpath (filename,filetype,wantedfiles,true) },
{ find_otherwise(filename,filetype,wantedfiles,true) },
}
local result, status, done = { }, { }, { }
for k, r in next, results do
local method, list = r[1], r[2]
if method and list then
for i=1,#list do
local c = collapsepath(list[i])
if not done[c] then
result[#result+1] = c
done[c] = true
end
status[#status+1] = formatters["%-10s: %s"](method,c)
end
end
end
if trace_detail then
report_resolving("lookup status: %s",table.serialize(status,filename))
end
return result, status
else
local method, result, stamp, filetype, wantedfiles
if instance.remember then
if askedformat == "" then
stamp = formatters["%s::%s"](suffixonly(filename),filename)
else
stamp = formatters["%s::%s"](askedformat,filename)
end
result = stamp and instance.found[stamp]
if result then
if trace_locating then
report_resolving("remembered file %a",filename)
end
return result
end
end
method, result = find_direct(filename)
if not result then
method, result = find_wildcard(filename)
if not result then
method, result = find_qualified(filename,false,askedformat)
if not result then
filetype, wantedfiles = find_analyze(filename,askedformat)
method, result = find_intree(filename,filetype,wantedfiles)
if not result then
method, result = find_onpath(filename,filetype,wantedfiles)
if resolve_otherwise and not result then
-- this will search everywhere in the tree
method, result = find_otherwise(filename,filetype,wantedfiles)
end
end
end
end
end
if result and #result > 0 then
local foundname = collapsepath(result[1])
resolvers.registerintrees(filename,askedformat,filetype,method,foundname)
result = { foundname }
else
result = { } -- maybe false
end
if stamp then
if trace_locating then
report_resolving("remembering file %a using hash %a",filename,stamp)
end
instance.found[stamp] = result
end
return result
end
end
-- -- -- end of main file search routing -- -- --
local function findfiles(filename,filetype,allresults)
if not filename or filename == "" then
return { }
end
local result, status = collect_instance_files(filename,filetype or "",allresults)
if not result or #result == 0 then
local lowered = lower(filename)
if filename ~= lowered then
result, status = collect_instance_files(lowered,filetype or "",allresults)
end
end
return result or { }, status
end
function resolvers.findfiles(filename,filetype)
return findfiles(filename,filetype,true)
end
function resolvers.findfile(filename,filetype)
return findfiles(filename,filetype,false)[1] or ""
end
function resolvers.findpath(filename,filetype)
return filedirname(findfiles(filename,filetype,false)[1] or "")
end
local function findgivenfiles(filename,allresults)
local base = filebasename(filename)
local result = { }
local hashes = instance.hashes
--
local function okay(hash,path,name)
local found = methodhandler('concatinators',hash.type,hash.name,path,name)
if found and found ~= "" then
result[#result+1] = resolveprefix(found)
return not allresults
end
end
--
for k=1,#hashes do
local hash = hashes[k]
local content = instance.files[hash.name]
if content then
local path, name = lookup(content,base)
if not path then
-- no match
elseif type(path) == "string" then
if okay(hash,path,name) then
return result
end
else
for i=1,#path do
if okay(hash,path[i],name) then
return result
end
end
end
end
end
--
return result
end
function resolvers.findgivenfiles(filename)
return findgivenfiles(filename,true)
end
function resolvers.findgivenfile(filename)
return findgivenfiles(filename,false)[1] or ""
end
local makewildcard = Cs(
(P("^")^0 * P("/") * P(-1) + P(-1)) /".*"
+ (P("^")^0 * P("/") / "")^0 * (P("*")/".*" + P("-")/"%%-" + P(".")/"%%." + P("?")/"."+ P("\\")/"/" + P(1))^0
)
function resolvers.wildcardpattern(pattern)
return lpegmatch(makewildcard,pattern) or pattern
end
-- we use more function calls than before but we also have smaller trees so
-- why bother
local function findwildcardfiles(filename,allresults,result)
local result = result or { }
local base = filebasename(filename)
local dirn = filedirname(filename)
local path = lower(lpegmatch(makewildcard,dirn) or dirn)
local name = lower(lpegmatch(makewildcard,base) or base)
local files = instance.files
--
if find(name,"*",1,true) then
local hashes = instance.hashes
local function okay(found,path,base,hashname,hashtype)
if find(found,path) then
local full = methodhandler('concatinators',hashtype,hashname,found,base)
if full and full ~= "" then
result[#result+1] = resolveprefix(full)
return not allresults
end
end
end
for k=1,#hashes do
local hash = hashes[k]
local hashname = hash.name
local hashtype = hash.type
if hashname and hashtype then
for found, base in filtered(files[hashname],name) do
if type(found) == 'string' then
if okay(found,path,base,hashname,hashtype) then
break
end
else
for i=1,#found do
if okay(found[i],path,base,hashname,hashtype) then
break
end
end
end
end
end
end
else
local function okayokay(found,path,base,hashname,hashtype)
if find(found,path) then
local full = methodhandler('concatinators',hashtype,hashname,found,base)
if full and full ~= "" then
result[#result+1] = resolveprefix(full)
return not allresults
end
end
end
--
local hashes = instance.hashes
for k=1,#hashes do
local hash = hashes[k]
local hashname = hash.name
local hashtype = hash.type
if hashname and hashtype then
local found, base = lookup(content,base)
if not found then
-- nothing
elseif type(found) == 'string' then
if okay(found,path,base,hashname,hashtype) then
break
end
else
for i=1,#found do
if okay(found[i],path,base,hashname,hashtype) then
break
end
end
end
end
end
end
-- we can consider also searching the paths not in the database, but then
-- we end up with a messy search (all // in all path specs)
return result
end
function resolvers.findwildcardfiles(filename,result)
return findwildcardfiles(filename,true,result)
end
function resolvers.findwildcardfile(filename)
return findwildcardfiles(filename,false)[1] or ""
end
-- main user functions
function resolvers.automount()
-- implemented later
end
function resolvers.load(option)
statistics.starttiming(instance)
identify_configuration_files()
load_configuration_files()
if option ~= "nofiles" then
load_databases()
resolvers.automount()
end
statistics.stoptiming(instance)
local files = instance.files
return files and next(files) and true
end
function resolvers.loadtime()
return statistics.elapsedtime(instance)
end
local function report(str)
if trace_locating then
report_resolving(str) -- has already verbose
else
print(str)
end
end
function resolvers.dowithfilesandreport(command, files, ...) -- will move
if files and #files > 0 then
if trace_locating then
report('') -- ?
end
if type(files) == "string" then
files = { files }
end
for f=1,#files do
local file = files[f]
local result = command(file,...)
if type(result) == 'string' then
report(result)
else
for i=1,#result do
report(result[i]) -- could be unpack
end
end
end
end
end
-- obsolete
-- resolvers.varvalue = resolvers.variable -- output the value of variable $STRING.
-- resolvers.expandvar = resolvers.expansion -- output variable expansion of STRING.
function resolvers.showpath(str) -- output search path for file type NAME
return joinpath(resolvers.expandedpathlist(resolvers.formatofvariable(str)))
end
function resolvers.registerfile(files, name, path)
if files[name] then
if type(files[name]) == 'string' then
files[name] = { files[name], path }
else
files[name] = path
end
else
files[name] = path
end
end
function resolvers.dowithpath(name,func)
local pathlist = resolvers.expandedpathlist(name)
for i=1,#pathlist do
func("^"..cleanpath(pathlist[i]))
end
end
function resolvers.dowithvariable(name,func)
func(expandedvariable(name))
end
function resolvers.locateformat(name)
local engine = environment.ownmain or "luatex"
local barename = removesuffix(name)
local fullname = addsuffix(barename,"fmt")
local fmtname = caches.getfirstreadablefile(fullname,"formats",engine) or ""
if fmtname == "" then
fmtname = resolvers.findfile(fullname)
fmtname = cleanpath(fmtname)
end
if fmtname ~= "" then
local barename = removesuffix(fmtname)
local luaname = addsuffix(barename,luasuffixes.lua)
local lucname = addsuffix(barename,luasuffixes.luc)
local luiname = addsuffix(barename,luasuffixes.lui)
if isfile(luiname) then
return barename, luiname
elseif isfile(lucname) then
return barename, lucname
elseif isfile(luaname) then
return barename, luaname
end
end
return nil, nil
end
function resolvers.booleanvariable(str,default)
local b = resolvers.expansion(str)
if b == "" then
return default
else
b = toboolean(b)
return (b == nil and default) or b
end
end
function resolvers.dowithfilesintree(pattern,handle,before,after) -- will move, can be a nice iterator instead
local instance = resolvers.instance
local hashes = instance.hashes
for i=1,#hashes do
local hash = hashes[i]
local blobtype = hash.type
local blobpath = hash.name
if blobtype and blobpath then
local total = 0
local checked = 0
local done = 0
if before then
before(blobtype,blobpath,pattern)
end
for path, name in filtered(instance.files[blobpath],pattern) do
if type(path) == "string" then
checked = checked + 1
if handle(blobtype,blobpath,path,name) then
done = done + 1
end
else
checked = checked + #path
for i=1,#path do
if handle(blobtype,blobpath,path[i],name) then
done = done + 1
end
end
end
end
if after then
after(blobtype,blobpath,pattern,total,checked,done)
end
end
end
end
local obsolete = resolvers.obsolete or { }
resolvers.obsolete = obsolete
resolvers.find_file = resolvers.findfile obsolete.find_file = resolvers.findfile
resolvers.find_files = resolvers.findfiles obsolete.find_files = resolvers.findfiles
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