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-rw-r--r--Master/texmf-dist/tex/context/base/data-pre.lua117
1 files changed, 95 insertions, 22 deletions
diff --git a/Master/texmf-dist/tex/context/base/data-pre.lua b/Master/texmf-dist/tex/context/base/data-pre.lua
index 9348f6cd39c..f774ba6eb0d 100644
--- a/Master/texmf-dist/tex/context/base/data-pre.lua
+++ b/Master/texmf-dist/tex/context/base/data-pre.lua
@@ -1,4 +1,4 @@
-if not modules then modules = { } end modules ['data-res'] = {
+if not modules then modules = { } end modules ['data-pre'] = {
version = 1.001,
comment = "companion to luat-lib.mkiv",
author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
@@ -6,17 +6,29 @@ if not modules then modules = { } end modules ['data-res'] = {
license = "see context related readme files"
}
+-- It could be interesting to hook the resolver in the file
+-- opener so that unresolved prefixes travel around and we
+-- get more abstraction.
+
+-- As we use this beforehand we will move this up in the chain
+-- of loading.
+
--~ print(resolvers.resolve("abc env:tmp file:cont-en.tex path:cont-en.tex full:cont-en.tex rel:zapf/one/p-chars.tex"))
-local upper, lower, gsub = string.upper, string.lower, string.gsub
+local resolvers = resolvers
+local prefixes = utilities.storage.allocate()
+resolvers.prefixes = prefixes
-local prefixes = { }
+local gsub = string.gsub
+local cleanpath, findgivenfile, expansion = resolvers.cleanpath, resolvers.findgivenfile, resolvers.expansion
+local getenv = resolvers.getenv -- we can probably also use resolvers.expansion
+local P, Cs, lpegmatch = lpeg.P, lpeg.Cs, lpeg.match
prefixes.environment = function(str)
- return resolvers.clean_path(os.getenv(str) or os.getenv(upper(str)) or os.getenv(lower(str)) or "")
+ return cleanpath(expansion(str))
end
-prefixes.relative = function(str,n)
+prefixes.relative = function(str,n) -- lfs.isfile
if io.exists(str) then
-- nothing
elseif io.exists("./" .. str) then
@@ -32,7 +44,7 @@ prefixes.relative = function(str,n)
end
end
end
- return resolvers.clean_path(str)
+ return cleanpath(str)
end
prefixes.auto = function(str)
@@ -44,18 +56,34 @@ prefixes.auto = function(str)
end
prefixes.locate = function(str)
- local fullname = resolvers.find_given_file(str) or ""
- return resolvers.clean_path((fullname ~= "" and fullname) or str)
+ local fullname = findgivenfile(str) or ""
+ return cleanpath((fullname ~= "" and fullname) or str)
end
prefixes.filename = function(str)
- local fullname = resolvers.find_given_file(str) or ""
- return resolvers.clean_path(file.basename((fullname ~= "" and fullname) or str))
+ local fullname = findgivenfile(str) or ""
+ return cleanpath(file.basename((fullname ~= "" and fullname) or str))
end
prefixes.pathname = function(str)
- local fullname = resolvers.find_given_file(str) or ""
- return resolvers.clean_path(file.dirname((fullname ~= "" and fullname) or str))
+ local fullname = findgivenfile(str) or ""
+ return cleanpath(file.dirname((fullname ~= "" and fullname) or str))
+end
+
+prefixes.selfautoloc = function(str)
+ return cleanpath(file.join(getenv('SELFAUTOLOC'),str))
+end
+
+prefixes.selfautoparent = function(str)
+ return cleanpath(file.join(getenv('SELFAUTOPARENT'),str))
+end
+
+prefixes.selfautodir = function(str)
+ return cleanpath(file.join(getenv('SELFAUTODIR'),str))
+end
+
+prefixes.home = function(str)
+ return cleanpath(file.join(getenv('HOME'),str))
end
prefixes.env = prefixes.environment
@@ -84,19 +112,28 @@ local function _resolve_(method,target)
end
end
-local function resolve(str)
- if type(str) == "table" then
- for k=1,#str do
- local v = str[k]
- str[k] = resolve(v) or v
- end
- elseif str and str ~= "" then
- str = gsub(str,"([a-z]+):([^ \"\']*)",_resolve_)
+local resolved, abstract = { }, { }
+
+function resolvers.resetresolve(str)
+ resolved, abstract = { }, { }
+end
+
+local function resolve(str) -- use schemes, this one is then for the commandline only
+ local res = resolved[str]
+ if not res then
+ res = gsub(str,"([a-z][a-z]+):([^ \"\']*)",_resolve_)
+ resolved[str] = res
+ abstract[res] = str
end
- return str
+ return res
+end
+
+local function unresolve(str)
+ return abstract[str] or str
end
-resolvers.resolve = resolve
+resolvers.resolve = resolve
+resolvers.unresolve = unresolve
if os.uname then
@@ -107,3 +144,39 @@ if os.uname then
end
end
+
+if os.type == "unix" then
+
+ local pattern
+
+ local function makepattern(t,k,v)
+ local colon = P(":")
+ local p
+ for k, v in table.sortedpairs(prefixes) do
+ if p then
+ p = P(k) + p
+ else
+ p = P(k)
+ end
+ end
+ pattern = Cs((p * colon + colon/";" + P(1))^0)
+ if t then
+ t[k] = v
+ end
+ end
+
+ makepattern()
+
+ getmetatable(prefixes).__newindex = makepattern
+
+ function resolvers.repath(str)
+ return lpegmatch(pattern,str)
+ end
+
+else -- already the default:
+
+ function resolvers.repath(str)
+ return str
+ end
+
+end