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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).
-- todo: cache:/// home:///
local format, gsub, find, lower, upper, match, gmatch = string.format, string.gsub, string.find, string.lower, string.upper, string.match, string.gmatch
local concat, insert, sortedkeys = table.concat, table.insert, table.sortedkeys
local next, type = next, type
local os = os
local lpegP, lpegS, lpegR, lpegC, lpegCc, lpegCs, lpegCt = lpeg.P, lpeg.S, lpeg.R, lpeg.C, lpeg.Cc, lpeg.Cs, lpeg.Ct
local lpegmatch, lpegpatterns = lpeg.match, lpeg.patterns
local filedirname, filebasename, fileextname, filejoin = file.dirname, file.basename, file.extname, file.join
local collapse_path = file.collapse_path
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_resolvers = logs.new("resolvers")
local resolvers = resolvers
local expanded_path_from_list = resolvers.expanded_path_from_list
local checked_variable = resolvers.checked_variable
local split_configuration_path = resolvers.split_configuration_path
local initializesetter = utilities.setters.initialize
local ostype, osname, osenv, ossetenv, osgetenv = os.type, os.name, os.env, os.setenv, os.getenv
resolvers.cacheversion = '1.0.1'
resolvers.configbanner = ''
resolvers.homedir = environment.homedir
resolvers.criticalvars = { "SELFAUTOLOC", "SELFAUTODIR", "SELFAUTOPARENT", "TEXMFCNF", "TEXMF", "TEXOS" }
resolvers.luacnfspec = '{$SELFAUTODIR,$SELFAUTOPARENT}{,{/share,}/texmf{-local,}/web2c}' -- rubish path
resolvers.luacnfname = 'texmfcnf.lua'
resolvers.luacnfstate = "unknown"
local unset_variable = "unset"
local formats = resolvers.formats
local suffixes = resolvers.suffixes
local dangerous = resolvers.dangerous
local suffixmap = resolvers.suffixmap
local alternatives = resolvers.alternatives
resolvers.instance = resolvers.instance or nil -- the current one (slow access)
local instance = resolvers.instance or nil -- the current one (fast access)
function resolvers.newinstance()
local newinstance = {
progname = 'context',
engine = 'luatex',
format = '',
environment = { },
variables = { },
expansions = { },
files = { },
setups = { },
order = { },
found = { },
foundintrees = { },
origins = { },
hashes = { },
specification = { },
lists = { },
remember = true,
diskcache = true,
renewcache = false,
loaderror = false,
savelists = true,
allresults = false,
pattern = nil, -- lists
data = { }, -- only for loading
force_suffixes = true,
fakepaths = { },
}
local ne = newinstance.environment
for k, v in next, osenv do
ne[upper(k)] = checked_variable(v)
end
return newinstance
end
function resolvers.setinstance(someinstance)
instance = someinstance
resolvers.instance = someinstance
return someinstance
end
function resolvers.reset()
return resolvers.setinstance(resolvers.newinstance())
end
local function reset_hashes()
instance.lists = { }
instance.found = { }
end
function resolvers.setenv(key,value)
if instance then
instance.environment[key] = value
ossetenv(key,value)
end
end
function resolvers.getenv(key)
local value = instance.environment[key]
if value and value ~= "" then
return value
else
local e = osgetenv(key)
return e ~= nil and e ~= "" and checked_variable(e) or ""
end
end
resolvers.env = resolvers.getenv
local function expand_vars(lst) -- simple vars
local variables, getenv = instance.variables, resolvers.getenv
local function resolve(a)
local va = variables[a] or ""
return (va ~= "" and va) or getenv(a) or ""
end
for k=1,#lst do
local var = lst[k]
var = gsub(var,"%$([%a%d%_%-]+)",resolve)
var = gsub(var,";+",";")
var = gsub(var,";[!{}/\\]+;",";")
--~ var = gsub(var,"~",resolvers.homedir)
lst[k] = var
end
end
local function resolve(key)
local value = instance.variables[key]
if value and value ~= "" then
return value
end
local value = instance.environment[key]
if value and value ~= "" then
return value
end
local e = osgetenv(key)
return e ~= nil and e ~= "" and checked_variable(e) or ""
end
local function expanded_var(var) -- simple vars
var = gsub(var,"%$([%a%d%_%-]+)",resolve)
var = gsub(var,";+",";")
var = gsub(var,";[!{}/\\]+;",";")
--~ var = gsub(var,"~",resolvers.homedir)
return var
end
local function entry(entries,name)
if name and name ~= "" then
name = gsub(name,'%$','')
local result = entries[name..'.'..instance.progname] or entries[name]
if result then
return result
else
result = resolvers.getenv(name)
if result then
instance.variables[name] = result
resolvers.expand_variables()
return instance.expansions[name] or ""
end
end
end
return ""
end
local function is_entry(entries,name)
if name and name ~= "" then
name = gsub(name,'%$','')
return (entries[name..'.'..instance.progname] or entries[name]) ~= nil
else
return false
end
end
function resolvers.report_critical_variables()
if trace_locating then
for i=1,#resolvers.criticalvars do
local v = resolvers.criticalvars[i]
report_resolvers("variable '%s' set to '%s'",v,resolvers.getenv(v) or "unknown")
end
report_resolvers()
end
resolvers.report_critical_variables = function() end
end
local function identify_configuration_files()
local specification = instance.specification
if #specification == 0 then
local cnfspec = resolvers.getenv('TEXMFCNF')
if cnfspec == "" then
cnfspec = resolvers.luacnfspec
resolvers.luacnfstate = "default"
else
resolvers.luacnfstate = "environment"
end
resolvers.report_critical_variables()
resolvers.expand_variables()
local cnfpaths = expanded_path_from_list(resolvers.split_path(cnfspec))
expand_vars(cnfpaths) --- hm
local luacnfname = resolvers.luacnfname
for i=1,#cnfpaths do
local filename = collapse_path(filejoin(cnfpaths[i],luacnfname))
if lfs.isfile(filename) then
specification[#specification+1] = filename
end
end
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 blob = loadfile(filename)
if blob then
local data = blob()
data = data and data.content
local setups = instance.setups
if data then
if trace_locating then
report_resolvers("loading configuration file '%s'",filename)
report_resolvers()
end
-- flattening is easier to deal with as we need to collapse
local t = { }
for k, v in next, data do -- v = progname
if v ~= unset_variable then
local kind = type(v)
if kind == "string" then
t[k] = v
elseif kind == "table" then
-- this operates on the table directly
initializesetter(filename,k,v)
-- this doesn't (maybe metatables some day)
for kk, vv in next, v do -- vv = variable
if vv ~= unset_variable then
if type(vv) == "string" then
t[kk.."."..k] = vv
end
end
end
else
-- report_resolvers("strange key '%s' in configuration file '%s'",k,filename)
end
end
end
setups[pathname] = t
if resolvers.luacnfstate == "default" then
-- the following code is not tested
local cnfspec = t["TEXMFCNF"]
if cnfspec then
-- 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)
-- 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_resolvers("skipping configuration file '%s'",filename)
end
setups[pathname] = { }
instance.loaderror = true
end
elseif trace_locating then
report_resolvers("skipping configuration file '%s'",filename)
end
instance.order[#instance.order+1] = instance.setups[pathname]
if instance.loaderror then
break
end
end
elseif trace_locating then
report_resolvers("warning: no lua configuration files found")
end
end
local function collapse_configuration_data() -- potential optimization: pass start index (setup and configuration are shared)
local order, variables, environment, origins = instance.order, instance.variables, instance.environment, instance.origins
for i=1,#order do
local c = order[i]
for k,v in next, c do
if variables[k] then
-- okay
else
local ek = environment[k]
if ek and ek ~= "" then
variables[k], origins[k] = ek, "env"
else
local bv = checked_variable(v)
variables[k], origins[k] = bv, "cnf"
end
end
end
end
end
-- database loading
-- locators
function resolvers.locatedatabase(specification)
return resolvers.methodhandler('locators', specification)
end
function resolvers.locators.tex(specification)
if specification and specification ~= '' and lfs.isdir(specification) then
if trace_locating then
report_resolvers("tex locator '%s' found",specification)
end
resolvers.append_hash('file',specification,filename,true) -- cache
elseif trace_locating then
report_resolvers("tex locator '%s' not found",specification)
end
end
-- hashers
function resolvers.hashdatabase(tag,name)
return resolvers.methodhandler('hashers',tag,name)
end
local function load_file_databases()
instance.loaderror, instance.files = false, { }
if not instance.renewcache then
local hashes = instance.hashes
for k=1,#hashes do
local hash = hashes[k]
resolvers.hashdatabase(hash.tag,hash.name)
if instance.loaderror then break end
end
end
end
function resolvers.hashers.tex(tag,name) -- used where?
local content = caches.loadcontent(tag,'files')
if content then
instance.files[tag] = content
else
instance.files[tag] = { }
instance.loaderror = true
end
end
local function locate_file_databases()
-- todo: cache:// and tree:// (runtime)
local texmfpaths = resolvers.expanded_path_list('TEXMF')
for i=1,#texmfpaths do
local path = collapse_path(texmfpaths[i])
local stripped = gsub(path,"^!!","")
local runtime = stripped == path
path = resolvers.clean_path(path)
if stripped ~= "" then
if lfs.isdir(path) then
local spec = resolvers.splitmethod(stripped)
if spec.scheme == "cache" then
stripped = spec.path
elseif runtime and (spec.noscheme or spec.scheme == "file") then
stripped = "tree:///" .. stripped
end
if trace_locating then
if runtime then
report_resolvers("locating list of '%s' (runtime)",path)
else
report_resolvers("locating list of '%s' (cached)",path)
end
end
resolvers.locatedatabase(stripped) -- nothing done with result
else
if trace_locating then
if runtime then
report_resolvers("skipping list of '%s' (runtime)",path)
else
report_resolvers("skipping list of '%s' (cached)",path)
end
end
end
end
end
if trace_locating then
report_resolvers()
end
end
local function generate_file_databases()
local hashes = instance.hashes
for i=1,#hashes do
resolvers.methodhandler('generators',hashes[i].tag)
end
if trace_locating then
report_resolvers()
end
end
local function save_file_databases() -- will become cachers
for i=1,#instance.hashes do
local hash = instance.hashes[i]
local cachename = hash.tag
if hash.cache then
local content = instance.files[cachename]
caches.collapsecontent(content)
caches.savecontent(cachename,"files",content)
elseif trace_locating then
report_resolvers("not saving runtime tree '%s'",cachename)
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.append_hash(type,tag,name,cache)
if trace_locating then
report_resolvers("hash '%s' appended",tag)
end
insert(instance.hashes, { type = type, tag = tag, name = name, cache = cache } )
end
function resolvers.prepend_hash(type,tag,name,cache)
if trace_locating then
report_resolvers("hash '%s' prepended",tag)
end
insert(instance.hashes, 1, { type = type, tag = tag, name = name, cache = cache } )
end
function resolvers.extend_texmf_var(specification) -- crap, we could better prepend the hash
-- local t = resolvers.expanded_path_list('TEXMF') -- full expansion
local t = resolvers.split_path(resolvers.getenv('TEXMF'))
insert(t,1,specification)
local newspec = concat(t,";")
if instance.environment["TEXMF"] then
instance.environment["TEXMF"] = newspec
elseif instance.variables["TEXMF"] then
instance.variables["TEXMF"] = newspec
else
-- weird
end
resolvers.expand_variables()
reset_hashes()
end
function resolvers.generators.tex(specification,tag)
instance.files[tag or specification] = resolvers.scan_files(specification)
end
function resolvers.splitexpansions()
local ie = instance.expansions
for k,v in next, ie do
local t, h, p = { }, { }, split_configuration_path(v)
for kk=1,#p do
local vv = p[kk]
if vv ~= "" and not h[vv] then
t[#t+1] = 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.data_state()
return caches.contentstate()
end
function resolvers.expand_variables()
local expansions, environment, variables = { }, instance.environment, instance.variables
local getenv = resolvers.getenv
instance.expansions = expansions
local engine, progname = instance.engine, instance.progname
if type(engine) ~= "string" then instance.engine, engine = "", "" end
if type(progname) ~= "string" then instance.progname, progname = "", "" end
if engine ~= "" then environment['engine'] = engine end
if progname ~= "" then environment['progname'] = progname end
for k,v in next, environment do
local a, b = match(k,"^(%a+)%_(.*)%s*$")
if a and b then
expansions[a..'.'..b] = v
else
expansions[k] = v
end
end
for k,v in next, environment do -- move environment to expansions (variables are already in there)
if not expansions[k] then expansions[k] = v end
end
for k,v in next, variables do -- move variables to expansions
if not expansions[k] then expansions[k] = v end
end
local busy = false
local function resolve(a)
busy = true
return expansions[a] or getenv(a)
end
while true do
busy = false
for k,v in next, expansions do
local s, n = gsub(v,"%$([%a%d%_%-]+)",resolve)
local s, m = gsub(s,"%$%{([%a%d%_%-]+)%}",resolve)
if n > 0 or m > 0 then
s = gsub(s,";+",";")
s = gsub(s,";[!{}/\\]+;",";")
expansions[k]= s
end
end
if not busy then break end
end
for k,v in next, expansions do
expansions[k] = gsub(v,"\\", '/')
end
end
function resolvers.variable(name)
return entry(instance.variables,name)
end
function resolvers.expansion(name)
return entry(instance.expansions,name)
end
function resolvers.is_variable(name)
return is_entry(instance.variables,name)
end
function resolvers.is_expansion(name)
return is_entry(instance.expansions,name)
end
function resolvers.unexpanded_path_list(str)
local pth = resolvers.variable(str)
local lst = resolvers.split_path(pth)
return expanded_path_from_list(lst)
end
function resolvers.unexpanded_path(str)
return file.join_path(resolvers.unexpanded_path_list(str))
end
local done = { }
function resolvers.reset_extra_path()
local ep = instance.extra_paths
if not ep then
ep, done = { }, { }
instance.extra_paths = ep
elseif #ep > 0 then
instance.lists, done = { }, { }
end
end
function resolvers.register_extra_path(paths,subpaths)
local ep = instance.extra_paths or { }
local n = #ep
if paths and paths ~= "" then
if subpaths and subpaths ~= "" then
for p in gmatch(paths,"[^,]+") do
-- we gmatch each step again, not that fast, but used seldom
for s in gmatch(subpaths,"[^,]+") do
local ps = p .. "/" .. s
if not done[ps] then
ep[#ep+1] = resolvers.clean_path(ps)
done[ps] = true
end
end
end
else
for p in gmatch(paths,"[^,]+") do
if not done[p] then
ep[#ep+1] = resolvers.clean_path(p)
done[p] = true
end
end
end
elseif subpaths and subpaths ~= "" then
for i=1,n do
-- we gmatch each step again, not that fast, but used seldom
for s in gmatch(subpaths,"[^,]+") do
local ps = ep[i] .. "/" .. s
if not done[ps] then
ep[#ep+1] = resolvers.clean_path(ps)
done[ps] = true
end
end
end
end
if #ep > 0 then
instance.extra_paths = ep -- register paths
end
if #ep > n then
instance.lists = { } -- erase the cache
end
end
local function made_list(instance,list)
local ep = instance.extra_paths
if not ep or #ep == 0 then
return list
else
local done, new = { }, { }
-- honour . .. ../.. but only when at the start
for k=1,#list do
local v = list[k]
if not done[v] then
if find(v,"^[%.%/]$") then
done[v] = true
new[#new+1] = v
else
break
end
end
end
-- first the extra paths
for k=1,#ep do
local v = ep[k]
if not done[v] then
done[v] = true
new[#new+1] = v
end
end
-- next the formal paths
for k=1,#list do
local v = list[k]
if not done[v] then
done[v] = true
new[#new+1] = v
end
end
return new
end
end
function resolvers.clean_path_list(str)
local t = resolvers.expanded_path_list(str)
if t then
for i=1,#t do
t[i] = collapse_path(resolvers.clean_path(t[i]))
end
end
return t
end
function resolvers.expand_path(str)
return file.join_path(resolvers.expanded_path_list(str))
end
function resolvers.expanded_path_list(str)
if not str then
return ep or { } -- ep ?
elseif instance.savelists then
-- engine+progname hash
str = gsub(str,"%$","")
if not instance.lists[str] then -- cached
local lst = made_list(instance,resolvers.split_path(resolvers.expansion(str)))
instance.lists[str] = expanded_path_from_list(lst)
end
return instance.lists[str]
else
local lst = resolvers.split_path(resolvers.expansion(str))
return made_list(instance,expanded_path_from_list(lst))
end
end
function resolvers.expanded_path_list_from_var(str) -- brrr
local tmp = resolvers.var_of_format_or_suffix(gsub(str,"%$",""))
if tmp ~= "" then
return resolvers.expanded_path_list(tmp)
else
return resolvers.expanded_path_list(str)
end
end
function resolvers.expand_path_from_var(str)
return file.join_path(resolvers.expanded_path_list_from_var(str))
end
function resolvers.expand_braces(str) -- output variable and brace expansion of STRING
local ori = resolvers.variable(str)
local pth = expanded_path_from_list(resolvers.split_path(ori))
return file.join_path(pth)
end
resolvers.isreadable = { }
function resolvers.isreadable.file(name)
local readable = lfs.isfile(name) -- brrr
if trace_detail then
if readable then
report_resolvers("file '%s' is readable",name)
else
report_resolvers("file '%s' is not readable", name)
end
end
return readable
end
resolvers.isreadable.tex = resolvers.isreadable.file
-- name
-- name/name
local function collect_files(names)
local filelist = { }
for k=1,#names do
local fname = names[k]
if trace_detail then
report_resolvers("checking name '%s'",fname)
end
local bname = filebasename(fname)
local dname = filedirname(fname)
if dname == "" or find(dname,"^%.") then
dname = false
else
dname = "/" .. dname .. "$"
end
local hashes = instance.hashes
for h=1,#hashes do
local hash = hashes[h]
local blobpath = hash.tag
local files = blobpath and instance.files[blobpath]
if files then
if trace_detail then
report_resolvers("deep checking '%s' (%s)",blobpath,bname)
end
local blobfile = files[bname]
if not blobfile then
local rname = "remap:"..bname
blobfile = files[rname]
if blobfile then
bname = files[rname]
blobfile = files[bname]
end
end
if blobfile then
local blobroot = files.__path__ or blobpath
if type(blobfile) == 'string' then
if not dname or find(blobfile,dname) then
local kind = hash.type
local search = filejoin(blobpath,blobfile,bname)
local result = resolvers.concatinators[hash.type](blobroot,blobfile,bname)
if trace_detail then
report_resolvers("match: kind '%s', search '%s', result '%s'",kind,search,result)
end
filelist[#filelist+1] = { kind, search, result }
end
else
for kk=1,#blobfile do
local vv = blobfile[kk]
if not dname or find(vv,dname) then
local kind = hash.type
local search = filejoin(blobpath,vv,bname)
local result = resolvers.concatinators[hash.type](blobroot,vv,bname)
if trace_detail then
report_resolvers("match: kind '%s', search '%s', result '%s'",kind,search,result)
end
filelist[#filelist+1] = { kind, search, result }
end
end
end
end
elseif trace_locating then
report_resolvers("no match in '%s' (%s)",blobpath,bname)
end
end
end
return #filelist > 0 and filelist or nil
end
function resolvers.register_in_trees(name)
if not find(name,"^%.") then
instance.foundintrees[name] = (instance.foundintrees[name] or 0) + 1 -- maybe only one
end
end
-- split the next one up for readability (bu 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 lfs.isdir(name) then
fakepaths[name] = 1 -- directory
else
fakepaths[name] = 2 -- no directory
end
end
return fakepaths[name] == 1
end
local function collect_instance_files(filename,collected) -- todo : plugin (scanners, checkers etc)
local result = collected or { }
local stamp = nil
filename = collapse_path(filename)
-- speed up / beware: format problem
if instance.remember then
stamp = filename .. "--" .. instance.engine .. "--" .. instance.progname .. "--" .. instance.format
if instance.found[stamp] then
if trace_locating then
report_resolvers("remembering file '%s'",filename)
end
resolvers.register_in_trees(filename) -- for tracing used files
return instance.found[stamp]
end
end
if not dangerous[instance.format or "?"] then
if resolvers.isreadable.file(filename) then
if trace_detail then
report_resolvers("file '%s' found directly",filename)
end
instance.found[stamp] = { filename }
return { filename }
end
end
if find(filename,'%*') then
if trace_locating then
report_resolvers("checking wildcard '%s'", filename)
end
result = resolvers.find_wildcard_files(filename)
elseif file.is_qualified_path(filename) then
if resolvers.isreadable.file(filename) then
if trace_locating then
report_resolvers("qualified name '%s'", filename)
end
result = { filename }
else
local forcedname, ok, suffix = "", false, fileextname(filename)
if suffix == "" then -- why
if instance.format == "" then
forcedname = filename .. ".tex"
if resolvers.isreadable.file(forcedname) then
if trace_locating then
report_resolvers("no suffix, forcing standard filetype 'tex'")
end
result, ok = { forcedname }, true
end
else
local format_suffixes = suffixes[instance.format]
if format_suffixes then
for i=1,#format_suffixes do
local s = format_suffixes[i]
forcedname = filename .. "." .. s
if resolvers.isreadable.file(forcedname) then
if trace_locating then
report_resolvers("no suffix, forcing format filetype '%s'", s)
end
result, ok = { forcedname }, true
break
end
end
end
end
end
if not ok 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 = gsub(filename .. "$","([%.%-])","%%%1")
local savedformat = instance.format
local format = savedformat or ""
if format == "" then
instance.format = resolvers.format_of_suffix(suffix)
end
if not format then
instance.format = "othertextfiles" -- kind of everything, maybe texinput is better
end
--
if basename ~= filename then
local resolved = collect_instance_files(basename)
if #result == 0 then
local lowered = lower(basename)
if filename ~= lowered then
resolved = collect_instance_files(lowered)
end
end
resolvers.format = savedformat
--
for r=1,#resolved do
local rr = resolved[r]
if find(rr,pattern) then
result[#result+1], ok = rr, true
end
end
end
-- a real wildcard:
--
-- if not ok then
-- local filelist = collect_files({basename})
-- for f=1,#filelist do
-- local ff = filelist[f][3] or ""
-- if find(ff,pattern) then
-- result[#result+1], ok = ff, true
-- end
-- end
-- end
end
if not ok and trace_locating then
report_resolvers("qualified name '%s'", filename)
end
end
else
-- search spec
local filetype, extra, done, wantedfiles, ext = '', nil, false, { }, fileextname(filename)
-- tricky as filename can be bla.1.2.3
--~ if not suffixmap[ext] then --- probably needs to be done elsewhere too
--~ wantedfiles[#wantedfiles+1] = filename
--~ end
if ext == "" then
if not instance.force_suffixes then
wantedfiles[#wantedfiles+1] = filename
end
else
wantedfiles[#wantedfiles+1] = filename
end
if instance.format == "" then
if ext == "" or not suffixmap[ext] then
local forcedname = filename .. '.tex'
wantedfiles[#wantedfiles+1] = forcedname
filetype = resolvers.format_of_suffix(forcedname)
if trace_locating then
report_resolvers("forcing filetype '%s'",filetype)
end
else
filetype = resolvers.format_of_suffix(filename)
if trace_locating then
report_resolvers("using suffix based filetype '%s'",filetype)
end
end
else
if ext == "" or not suffixmap[ext] then
local format_suffixes = suffixes[instance.format]
if format_suffixes then
for i=1,#format_suffixes do
wantedfiles[#wantedfiles+1] = filename .. "." .. format_suffixes[i]
end
end
end
filetype = instance.format
if trace_locating then
report_resolvers("using given filetype '%s'",filetype)
end
end
local typespec = resolvers.variable_of_format(filetype)
local pathlist = resolvers.expanded_path_list(typespec)
if not pathlist or #pathlist == 0 then
-- no pathlist, access check only / todo == wildcard
if trace_detail then
report_resolvers("checking filename '%s', filetype '%s', wanted files '%s'",filename, filetype or '?',concat(wantedfiles," | "))
end
for k=1,#wantedfiles do
local fname = wantedfiles[k]
if fname and resolvers.isreadable.file(fname) then
filename, done = fname, true
result[#result+1] = filejoin('.',fname)
break
end
end
-- this is actually 'other text files' or 'any' or 'whatever'
local filelist = collect_files(wantedfiles)
local fl = filelist and filelist[1]
if fl then
filename = fl[3]
result[#result+1] = filename
done = true
end
else
-- list search
local filelist = collect_files(wantedfiles)
local dirlist = { }
if filelist then
for i=1,#filelist do
dirlist[i] = filedirname(filelist[i][3]) .. "/" -- was [2] .. gamble
end
end
if trace_detail then
report_resolvers("checking filename '%s'",filename)
end
-- a bit messy ... esp the doscan setting here
local doscan
for k=1,#pathlist do
local path = pathlist[k]
if find(path,"^!!") then doscan = false else doscan = true end
local pathname = gsub(path,"^!+", '')
done = false
-- using file list
if filelist then
local expression
-- compare list entries with permitted pattern -- /xx /xx//
if not find(pathname,"/$") then
expression = pathname .. "/"
else
expression = pathname
end
expression = gsub(expression,"([%-%.])","%%%1") -- this also influences
expression = gsub(expression,"//+$", '/.*') -- later usage of pathname
expression = gsub(expression,"//", '/.-/') -- not ok for /// but harmless
expression = "^" .. expression .. "$"
if trace_detail then
report_resolvers("using pattern '%s' for path '%s'",expression,pathname)
end
for k=1,#filelist do
local fl = filelist[k]
local f = fl[2]
local d = dirlist[k]
if find(d,expression) then
--- todo, test for readable
result[#result+1] = fl[3]
done = true
if instance.allresults then
if trace_detail then
report_resolvers("match to '%s' in hash for file '%s' and path '%s', continue scanning",expression,f,d)
end
else
if trace_detail then
report_resolvers("match to '%s' in hash for file '%s' and path '%s', quit scanning",expression,f,d)
end
break
end
elseif trace_detail then
report_resolvers("no match to '%s' in hash for file '%s' and path '%s'",expression,f,d)
end
end
end
if not done and doscan then
-- check if on disk / unchecked / does not work at all / also zips
if resolvers.splitmethod(pathname).scheme == 'file' then -- ?
local pname = gsub(pathname,"%.%*$",'')
if not find(pname,"%*") then
local ppname = gsub(pname,"/+$","")
if can_be_dir(ppname) then
for k=1,#wantedfiles do
local w = wantedfiles[k]
local fname = filejoin(ppname,w)
if resolvers.isreadable.file(fname) then
if trace_detail then
report_resolvers("found '%s' by scanning",fname)
end
result[#result+1] = fname
done = true
if not instance.allresults then break end
end
end
else
-- no access needed for non existing path, speedup (esp in large tree with lots of fake)
end
end
end
end
if not done and doscan then
-- todo: slow path scanning ... although we now have tree:// supported in $TEXMF
end
if done and not instance.allresults then break end
end
end
end
for k=1,#result do
local rk = collapse_path(result[k])
result[k] = rk
resolvers.register_in_trees(rk) -- for tracing used files
end
if instance.remember then
instance.found[stamp] = result
end
return result
end
if not resolvers.concatinators then resolvers.concatinators = { } end
resolvers.concatinators.tex = filejoin
resolvers.concatinators.file = resolvers.concatinators.tex
function resolvers.find_files(filename,filetype,mustexist)
if type(mustexist) == boolean then
-- all set
elseif type(filetype) == 'boolean' then
filetype, mustexist = nil, false
elseif type(filetype) ~= 'string' then
filetype, mustexist = nil, false
end
instance.format = filetype or ''
local result = collect_instance_files(filename)
if #result == 0 then
local lowered = lower(filename)
if filename ~= lowered then
return collect_instance_files(lowered)
end
end
instance.format = ''
return result
end
function resolvers.find_file(filename,filetype,mustexist)
return (resolvers.find_files(filename,filetype,mustexist)[1] or "")
end
function resolvers.find_path(filename,filetype)
local path = resolvers.find_files(filename,filetype)[1] or ""
-- todo return current path
return file.dirname(path)
end
function resolvers.find_given_files(filename)
local bname, result = filebasename(filename), { }
local hashes = instance.hashes
for k=1,#hashes do
local hash = hashes[k]
local files = instance.files[hash.tag] or { }
local blist = files[bname]
if not blist then
local rname = "remap:"..bname
blist = files[rname]
if blist then
bname = files[rname]
blist = files[bname]
end
end
if blist then
if type(blist) == 'string' then
result[#result+1] = resolvers.concatinators[hash.type](hash.tag,blist,bname) or ""
if not instance.allresults then break end
else
for kk=1,#blist do
local vv = blist[kk]
result[#result+1] = resolvers.concatinators[hash.type](hash.tag,vv,bname) or ""
if not instance.allresults then break end
end
end
end
end
return result
end
function resolvers.find_given_file(filename)
return (resolvers.find_given_files(filename)[1] or "")
end
local function doit(path,blist,bname,tag,kind,result,allresults)
local done = false
if blist and kind then
if type(blist) == 'string' then
-- make function and share code
if find(lower(blist),path) then
result[#result+1] = resolvers.concatinators[kind](tag,blist,bname) or ""
done = true
end
else
for kk=1,#blist do
local vv = blist[kk]
if find(lower(vv),path) then
result[#result+1] = resolvers.concatinators[kind](tag,vv,bname) or ""
done = true
if not allresults then break end
end
end
end
end
return done
end
function resolvers.find_wildcard_files(filename) -- todo: remap: and lpeg
local result = { }
local bname, dname = filebasename(filename), filedirname(filename)
local path = gsub(dname,"^*/","")
path = gsub(path,"*",".*")
path = gsub(path,"-","%%-")
if dname == "" then
path = ".*"
end
local name = bname
name = gsub(name,"*",".*")
name = gsub(name,"-","%%-")
path = lower(path)
name = lower(name)
local files, allresults, done = instance.files, instance.allresults, false
if find(name,"%*") then
local hashes = instance.hashes
for k=1,#hashes do
local hash = hashes[k]
local tag, kind = hash.tag, hash.type
for kk, hh in next, files[hash.tag] do
if not find(kk,"^remap:") then
if find(lower(kk),name) then
if doit(path,hh,kk,tag,kind,result,allresults) then done = true end
if done and not allresults then break end
end
end
end
end
else
local hashes = instance.hashes
for k=1,#hashes do
local hash = hashes[k]
local tag, kind = hash.tag, hash.type
if doit(path,files[tag][bname],bname,tag,kind,result,allresults) then done = true end
if done and not allresults then break 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.find_wildcard_file(filename)
return (resolvers.find_wildcard_files(filename)[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()
collapse_configuration_data()
resolvers.expand_variables()
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.for_files(command, files, filetype, mustexist)
if files and #files > 0 then
local function report(str)
if trace_locating then
report_resolvers(str) -- has already verbose
else
print(str)
end
end
if trace_locating then
report('') -- ?
end
for f=1,#files do
local file = files[f]
local result = command(file,filetype,mustexist)
if type(result) == 'string' then
report(result)
else
for i=1,#result do
report(result[i]) -- could be unpack
end
end
end
end
end
-- strtab
resolvers.var_value = resolvers.variable -- output the value of variable $STRING.
resolvers.expand_var = resolvers.expansion -- output variable expansion of STRING.
function resolvers.show_path(str) -- output search path for file type NAME
return file.join_path(resolvers.expanded_path_list(resolvers.format_of_var(str)))
end
-- resolvers.find_file(filename)
-- resolvers.find_file(filename, filetype, mustexist)
-- resolvers.find_file(filename, mustexist)
-- resolvers.find_file(filename, filetype)
function resolvers.register_file(files, name, path)
if files[name] then
if type(files[name]) == 'string' then
files[name] = { files[name], path }
else
files[name] = path
end
else
files[name] = path
end
end
function resolvers.do_with_path(name,func)
local pathlist = resolvers.expanded_path_list(name)
for i=1,#pathlist do
func("^"..resolvers.clean_path(pathlist[i]))
end
end
function resolvers.do_with_var(name,func)
func(expanded_var(name))
end
function resolvers.locate_format(name)
local barename = gsub(name,"%.%a+$","")
local fmtname = caches.getfirstreadablefile(barename..".fmt","formats") or ""
if fmtname == "" then
fmtname = resolvers.find_files(barename..".fmt")[1] or ""
fmtname = resolvers.clean_path(fmtname)
end
if fmtname ~= "" then
local barename = file.removesuffix(fmtname)
local luaname, lucname, luiname = barename .. ".lua", barename .. ".luc", barename .. ".lui"
if lfs.isfile(luiname) then
return barename, luiname
elseif lfs.isfile(lucname) then
return barename, lucname
elseif lfs.isfile(luaname) then
return barename, luaname
end
end
return nil, nil
end
function resolvers.boolean_variable(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.with_files(pattern,handle,before,after) -- 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.tag
if blobpath then
if before then
before(blobtype,blobpath,pattern)
end
local files = instance.files[blobpath]
local total, checked, done = 0, 0, 0
if files then
for k,v in next, files do
total = total + 1
if find(k,"^remap:") then
k = files[k]
v = k -- files[k] -- chained
end
if find(k,pattern) then
if type(v) == "string" then
checked = checked + 1
if handle(blobtype,blobpath,v,k) then
done = done + 1
end
else
checked = checked + #v
for i=1,#v do
if handle(blobtype,blobpath,v[i],k) then
done = done + 1
end
end
end
end
end
end
if after then
after(blobtype,blobpath,pattern,total,checked,done)
end
end
end
end
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