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Diffstat (limited to 'tex/context/base/mkiv/file-mod.lua')
| -rw-r--r-- | tex/context/base/mkiv/file-mod.lua | 242 |
1 files changed, 242 insertions, 0 deletions
diff --git a/tex/context/base/mkiv/file-mod.lua b/tex/context/base/mkiv/file-mod.lua new file mode 100644 index 000000000..7f3763c5d --- /dev/null +++ b/tex/context/base/mkiv/file-mod.lua @@ -0,0 +1,242 @@ +if not modules then modules = { } end modules ['file-mod'] = { + version = 1.001, + comment = "companion to file-mod.mkvi", + author = "Hans Hagen, PRAGMA-ADE, Hasselt NL", + copyright = "PRAGMA ADE / ConTeXt Development Team", + license = "see context related readme files" +} + +-- This module will be redone! For instance, the prefixes will move to data-* +-- as they arr sort of generic along with home:// etc/. + +-- context is not defined yet! todo! (we need to load tupp-fil after cld) +-- todo: move startreadingfile to lua and push regime there + +--[[ldx-- +<p>It's more convenient to manipulate filenames (paths) in +<l n='lua'/> than in <l n='tex'/>. These methods have counterparts +at the <l n='tex'/> side.</p> +--ldx]]-- + +local format, find, concat, tonumber = string.format, string.find, table.concat, tonumber + +local trace_modules = false trackers .register("modules.loading", function(v) trace_modules = v end) +local permit_unprefixed = false directives.register("modules.permitunprefixed", function(v) permit_unprefixed = v end) + +local report_modules = logs.reporter("resolvers","modules") + +local commands = commands +local context = context +local implement = interfaces.implement + +local findbyscheme = resolvers.finders.byscheme -- use different one +local iterator = utilities.parsers.iterator + +-- modules can have a specific suffix or can specify one + +local prefixes = { + "m", -- module, extends functionality + "p", -- private code + "s", -- styles + "x", -- xml specific modules + -- "v", -- an old internal one for examples + "t", -- third party extensions +} + +-- the order might change and how about cld + +local suffixes = { + "mkvi", -- proprocessed mkiv files + "mkiv", -- mkiv files + "tex", -- normally source code files + "cld", -- context lua documents (often stand alone) + "lua", -- lua files +} + +local modstatus = { } + +local function usemodule(name,hasscheme) + local foundname + if hasscheme then + -- no auto suffix as http will return a home page or error page + -- so we only add one if missing + local fullname = file.addsuffix(name,"tex") + if trace_modules then + report_modules("checking url %a",fullname) + end + foundname = resolvers.findtexfile(fullname) or "" + elseif file.suffix(name) ~= "" then + if trace_modules then + report_modules("checking file %a",name) + end + foundname = findbyscheme("any",name) or "" + else + for i=1,#suffixes do + local fullname = file.addsuffix(name,suffixes[i]) + if trace_modules then + report_modules("checking file %a",fullname) + end + foundname = findbyscheme("any",fullname) or "" + if foundname ~= "" then + break + end + end + end + if foundname ~= "" then + if trace_modules then + report_modules("loading file %a",foundname) + end + context.startreadingfile() + resolvers.jobs.usefile(foundname,true) -- once, notext + -- context.input(foundname) + context.stopreadingfile() + return true + else + return false + end +end + +function environment.usemodules(prefix,askedname,truename) + local truename = truename or environment.truefilename(askedname) + local hasprefix = prefix and prefix ~= "" + local hashname = ((hasprefix and prefix) or "*") .. "-" .. truename + local status = modstatus[hashname] or false -- yet unset + if status == 0 then + -- not found + elseif status == 1 then + status = status + 1 + else + if trace_modules then + report_modules("locating, prefix %a, askedname %a, truename %a",prefix,askedname,truename) + end + local hasscheme = url.hasscheme(truename) + if hasscheme then + -- no prefix and suffix done + if usemodule(truename,true) then + status = 1 + else + status = 0 + end + elseif hasprefix then + if usemodule(prefix .. "-" .. truename) then + status = 1 + else + status = 0 + end + else + for i=1,#prefixes do + -- todo: reconstruct name i.e. basename + local thename = prefixes[i] .. "-" .. truename + if usemodule(thename) then + status = 1 + break + end + end + if status then + -- ok, don't change + elseif find(truename,"%-") and usemodule(truename) then + -- assume a user namespace + report_modules("using user prefixed file %a",truename) + status = 1 + elseif permit_unprefixed and usemodule(truename) then + report_modules("using unprefixed file %a",truename) + status = 1 + else + status = 0 + end + end + end + if status == 0 then + report_modules("%a is not found",askedname) + elseif status == 1 then + report_modules("%a is loaded",trace_modules and truename or askedname) + else + report_modules("%a is already loaded",trace_modules and truename or askedname) + end + modstatus[hashname] = status +end + +statistics.register("loaded tex modules", function() + if next(modstatus) then + local t, f, nt, nf = { }, { }, 0, 0 + for k, v in table.sortedhash(modstatus) do + k = file.basename(k) + if v == 0 then + nf = nf + 1 + f[nf] = k + else + nt = nt + 1 + t[nt] = k + end + end + if nf == 0 then + return format("%s requested, all found (%s)",nt,concat(t," ")) + elseif nt == 0 then + return format("%s requested, all missing (%s)",nf,concat(f," ")) + else + return format("%s requested, %s found (%s), %s missing (%s)",nt+nf,nt,concat(t," "),nf,concat(f," ")) + end + else + return nil + end +end) + +-- moved from syst-lua.lua: + +local lpegmatch = lpeg.match +local splitter = lpeg.tsplitter(lpeg.S(". "),tonumber) + +function environment.comparedversion(one,two) -- one >= two + if not two or two == "" then + one, two = environment.version, one + elseif one == "" then + one = environment.version + end + one = lpegmatch(splitter,one) + two = lpegmatch(splitter,two) + one = (one[1] or 0) * 10000 + (one[2] or 0) * 100 + (one[3] or 0) + two = (two[1] or 0) * 10000 + (two[2] or 0) * 100 + (two[3] or 0) + if one < two then + return -1 + elseif one > two then + return 1 + else + return 0 + end +end + +environment.comparedversion = comparedversion + + +function environment.useluamodule(list) + for filename in iterator(list) do + environment.loadluafile(filename) + end +end + +local strings = interfaces.strings + +implement { + name = "usemodules", + actions = environment.usemodules, + arguments = strings[2] +} + +implement { + name = "doifelseolderversion", + actions = function(one,two) commands.doifelse(comparedversion(one,two) >= 0) end, + arguments = strings[2] +} + +implement { + name = "useluamodule", + actions = environment.useluamodule, + arguments = "string" +} + +implement { + name = "loadluamodule", + actions = function(name) dofile(resolvers.findctxfile(name)) end, -- hack + arguments = "string" +} + |