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if not modules then modules = { } end modules ['file-lib'] = {
version = 1.001,
comment = "companion to file-lib.mkvi",
author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
copyright = "PRAGMA ADE / ConTeXt Development Team",
license = "see context related readme files"
}
-- todo: check all usage of truefilename at the tex end and remove
-- files there (and replace definitions by full names)
local format, gsub = string.format, string.gsub
local trace_libraries = false trackers.register("resolvers.libraries", function(v) trace_libraries = v end)
----- trace_files = false trackers.register("resolvers.readfile", function(v) trace_files = v end)
local report_library = logs.reporter("files","library")
----- report_files = logs.reporter("files","readfile")
local removesuffix = file.removesuffix
local getreadfilename = resolvers.getreadfilename
local loaded = { }
local defaultpatterns = { "%s" }
local function defaultaction(name,foundname)
report_files("asked name %a, found name %a",name,foundname)
end
local function defaultfailure(name)
report_files("asked name %a, not found",name)
end
function resolvers.uselibrary(specification) -- todo: reporter
local name = specification.name
if name and name ~= "" then
local patterns = specification.patterns or defaultpatterns
local action = specification.action or defaultaction
local failure = specification.failure or defaultfailure
local onlyonce = specification.onlyonce
local files = utilities.parsers.settings_to_array(name)
local truename = environment.truefilename
local function found(filename)
local somename = truename and truename(filename) or filename
local foundname = getreadfilename("any",".",somename) -- maybe some day also an option not to backtrack .. and ../.. (or block global)
return foundname ~= "" and foundname
end
for i=1,#files do
local filename = files[i]
if not loaded[filename] then
local foundname = nil
local barename = removesuffix(filename)
-- direct search (we have an explicit suffix)
if barename ~= filename then
foundname = found(filename)
if trace_libraries then
report_library("checking %a: %s",filename,foundname or "not found")
end
end
if not foundname then
-- pattern based search
for i=1,#patterns do
local wanted = format(patterns[i],barename)
foundname = found(wanted)
if trace_libraries then
report_library("checking %a as %a: %s",filename,wanted,foundname or "not found")
end
if foundname then
break
end
end
end
if not loaded[foundname] then
if foundname then
action(name,foundname)
if onlyonce then
loaded[foundname] = true -- todo: base this on return value
end
elseif failure then
failure(name)
end
if onlyonce then
loaded[filename] = true -- todo: base this on return value
end
end
end
end
end
end
commands.uselibrary = resolvers.uselibrary -- for the moment
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