diff options
Diffstat (limited to 'Master/texmf-dist/tex/context/base/file-mod.lua')
-rw-r--r-- | Master/texmf-dist/tex/context/base/file-mod.lua | 170 |
1 files changed, 170 insertions, 0 deletions
diff --git a/Master/texmf-dist/tex/context/base/file-mod.lua b/Master/texmf-dist/tex/context/base/file-mod.lua new file mode 100644 index 00000000000..e6592f0f062 --- /dev/null +++ b/Master/texmf-dist/tex/context/base/file-mod.lua @@ -0,0 +1,170 @@ +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, concat, tonumber = string.format, table.concat, tonumber + +local trace_modules = false trackers.register("modules.loading", function(v) trace_modules = v end) + +local report_modules = logs.reporter("resolvers","modules") + +commands = commands or { } +local commands = commands + +local findbyscheme = resolvers.finders.byscheme -- use different one + +-- modules can have a specific suffix or can specify one + +local prefixes = { "m", "p", "s", "x", "v", "t" } +local suffixes = { "mkvi", "mkiv", "tex", "cld", "lua" } -- order might change and how about cld +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: '%s'",fullname) + end + foundname = resolvers.findtexfile(fullname) or "" + elseif file.extname(name) ~= "" then + if trace_modules then + report_modules("checking file: '%s'",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: '%s'",fullname) + end + foundname = findbyscheme("any",fullname) or "" + if foundname ~= "" then + break + end + end + end + if foundname ~= "" then + if trace_modules then + report_modules("loading: '%s'",foundname) + end + context.startreadingfile() + resolvers.jobs.usefile(foundname,true) -- once, notext + -- context.input(foundname) + context.stopreadingfile() + return true + else + return false + end +end + +function commands.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] + if status == 0 then + -- not found + elseif status == 1 then + status = status + 1 + else + if trace_modules then + report_modules("locating: prefix: '%s', askedname: '%s', truename: '%s'",prefix or "", askedname or "", truename or "") + 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 usemodule(truename) then + status = 1 + else + status = 0 + end + end + end + if status == 0 then + report_modules("not found: '%s'",askedname) + elseif status == 1 then + report_modules("loaded: '%s'",trace_modules and truename or askedname) + else + report_modules("already loaded: '%s'",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 + local ts = (nt>0 and format(" (%s)",concat(t," "))) or "" + local fs = (nf>0 and format(" (%s)",concat(f," "))) or "" + return format("%s requested, %s found%s, %s missing%s",nt+nf,nt,ts,nf,fs) + else + return nil + end +end) + +-- moved from syst-lua.lua: + +local splitter = lpeg.tsplitter(lpeg.S(". "),tonumber) + +function commands.doifolderversionelse(one,two) -- one >= two + if not two then + one, two = environment.version, one + elseif one == "" then + one = environment.version + end + one = lpeg.match(splitter,one) + two = lpeg.match(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) + commands.testcase(one>=two) +end |