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if not modules then modules = { } end modules ['data-zip'] = {
version = 1.001,
comment = "companion to luat-lib.mkiv",
author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
copyright = "PRAGMA ADE / ConTeXt Development Team",
license = "see context related readme files"
}
local format, find, match = string.format, string.find, string.match
local unpack = unpack or table.unpack
local trace_locating = false trackers.register("resolvers.locating", function(v) trace_locating = v end)
local report_resolvers = logs.new("resolvers")
-- zip:///oeps.zip?name=bla/bla.tex
-- zip:///oeps.zip?tree=tex/texmf-local
-- zip:///texmf.zip?tree=/tex/texmf
-- zip:///texmf.zip?tree=/tex/texmf-local
-- zip:///texmf-mine.zip?tree=/tex/texmf-projects
local resolvers = resolvers
zip = zip or { }
local zip = zip
zip.archives = zip.archives or { }
local archives = zip.archives
zip.registeredfiles = zip.registeredfiles or { }
local registeredfiles = zip.registeredfiles
local finders, openers, loaders = resolvers.finders, resolvers.openers, resolvers.loaders
local locators, hashers, concatinators = resolvers.locators, resolvers.hashers, resolvers.concatinators
local function validzip(str) -- todo: use url splitter
if not find(str,"^zip://") then
return "zip:///" .. str
else
return str
end
end
function zip.openarchive(name)
if not name or name == "" then
return nil
else
local arch = archives[name]
if not arch then
local full = resolvers.find_file(name) or ""
arch = (full ~= "" and zip.open(full)) or false
archives[name] = arch
end
return arch
end
end
function zip.closearchive(name)
if not name or (name == "" and archives[name]) then
zip.close(archives[name])
archives[name] = nil
end
end
function locators.zip(specification) -- where is this used? startup zips (untested)
specification = resolvers.splitmethod(specification)
local zipfile = specification.path
local zfile = zip.openarchive(name) -- tricky, could be in to be initialized tree
if trace_locating then
if zfile then
report_resolvers("zip locator, archive '%s' found",specification.original)
else
report_resolvers("zip locator, archive '%s' not found",specification.original)
end
end
end
function hashers.zip(tag,name)
if trace_locating then
report_resolvers("loading zip file '%s' as '%s'",name,tag)
end
resolvers.usezipfile(format("%s?tree=%s",tag,name))
end
function concatinators.zip(tag,path,name)
if not path or path == "" then
return format('%s?name=%s',tag,name)
else
return format('%s?name=%s/%s',tag,path,name)
end
end
function resolvers.isreadable.zip(name)
return true
end
function finders.zip(specification,filetype)
specification = resolvers.splitmethod(specification)
if specification.path then
local q = url.query(specification.query)
if q.name then
local zfile = zip.openarchive(specification.path)
if zfile then
if trace_locating then
report_resolvers("zip finder, archive '%s' found",specification.path)
end
local dfile = zfile:open(q.name)
if dfile then
dfile = zfile:close()
if trace_locating then
report_resolvers("zip finder, file '%s' found",q.name)
end
return specification.original
elseif trace_locating then
report_resolvers("zip finder, file '%s' not found",q.name)
end
elseif trace_locating then
report_resolvers("zip finder, unknown archive '%s'",specification.path)
end
end
end
if trace_locating then
report_resolvers("zip finder, '%s' not found",filename)
end
return unpack(finders.notfound)
end
function openers.zip(specification)
local zipspecification = resolvers.splitmethod(specification)
if zipspecification.path then
local q = url.query(zipspecification.query)
if q.name then
local zfile = zip.openarchive(zipspecification.path)
if zfile then
if trace_locating then
report_resolvers("zip opener, archive '%s' opened",zipspecification.path)
end
local dfile = zfile:open(q.name)
if dfile then
logs.show_open(specification)
if trace_locating then
report_resolvers("zip opener, file '%s' found",q.name)
end
return openers.text_opener(specification,dfile,'zip')
elseif trace_locating then
report_resolvers("zip opener, file '%s' not found",q.name)
end
elseif trace_locating then
report_resolvers("zip opener, unknown archive '%s'",zipspecification.path)
end
end
end
if trace_locating then
report_resolvers("zip opener, '%s' not found",filename)
end
return unpack(openers.notfound)
end
function loaders.zip(specification)
specification = resolvers.splitmethod(specification)
if specification.path then
local q = url.query(specification.query)
if q.name then
local zfile = zip.openarchive(specification.path)
if zfile then
if trace_locating then
report_resolvers("zip loader, archive '%s' opened",specification.path)
end
local dfile = zfile:open(q.name)
if dfile then
logs.show_load(filename)
if trace_locating then
report_resolvers("zip loader, file '%s' loaded",filename)
end
local s = dfile:read("*all")
dfile:close()
return true, s, #s
elseif trace_locating then
report_resolvers("zip loader, file '%s' not found",q.name)
end
elseif trace_locating then
report_resolvers("zip loader, unknown archive '%s'",specification.path)
end
end
end
if trace_locating then
report_resolvers("zip loader, '%s' not found",filename)
end
return unpack(openers.notfound)
end
-- zip:///somefile.zip
-- zip:///somefile.zip?tree=texmf-local -> mount
function resolvers.usezipfile(zipname)
zipname = validzip(zipname)
local specification = resolvers.splitmethod(zipname)
local zipfile = specification.path
if zipfile and not registeredfiles[zipname] then
local tree = url.query(specification.query).tree or ""
local z = zip.openarchive(zipfile)
if z then
local instance = resolvers.instance
if trace_locating then
report_resolvers("zip registering, registering archive '%s'",zipname)
end
statistics.starttiming(instance)
resolvers.prepend_hash('zip',zipname,zipfile)
resolvers.extend_texmf_var(zipname) -- resets hashes too
registeredfiles[zipname] = z
instance.files[zipname] = resolvers.register_zip_file(z,tree or "")
statistics.stoptiming(instance)
elseif trace_locating then
report_resolvers("zip registering, unknown archive '%s'",zipname)
end
elseif trace_locating then
report_resolvers("zip registering, '%s' not found",zipname)
end
end
function resolvers.register_zip_file(z,tree)
local files, filter = { }, ""
if tree == "" then
filter = "^(.+)/(.-)$"
else
filter = format("^%s/(.+)/(.-)$",tree)
end
if trace_locating then
report_resolvers("zip registering, using filter '%s'",filter)
end
local register, n = resolvers.register_file, 0
for i in z:files() do
local path, name = match(i.filename,filter)
if path then
if name and name ~= '' then
register(files, name, path)
n = n + 1
else
-- directory
end
else
register(files, i.filename, '')
n = n + 1
end
end
report_resolvers("zip registering, %s files registered",n)
return files
end
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