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Diffstat (limited to 'tex/context/base/data-ini.lua')
| -rw-r--r-- | tex/context/base/data-ini.lua | 222 |
1 files changed, 222 insertions, 0 deletions
diff --git a/tex/context/base/data-ini.lua b/tex/context/base/data-ini.lua new file mode 100644 index 000000000..5805c4301 --- /dev/null +++ b/tex/context/base/data-ini.lua @@ -0,0 +1,222 @@ +if not modules then modules = { } end modules ['data-ini'] = { + 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 gsub, find, gmatch = string.gsub, string.find, string.gmatch +local concat = table.concat +local next, type = next, type + +local filedirname, filebasename, fileextname, filejoin = file.dirname, file.basename, file.extname, file.join + +local trace_locating = false trackers.register("resolvers.locating", function(v) trace_locating = v end) +local trace_detail = false trackers.register("resolvers.details", function(v) trace_detail = v end) +local trace_expansions = false trackers.register("resolvers.expansions", function(v) trace_expansions = v end) + +local report_resolvers = logs.new("resolvers") + +local ostype, osname, ossetenv, osgetenv = os.type, os.name, os.setenv, os.getenv + +-- The code here used to be part of a data-res but for convenience +-- we now split it over multiple files. As this file is now the +-- starting point we introduce resolvers here. + +resolvers = resolvers or { } + +-- We don't want the kpse library to kick in. Also, we want to be able to +-- execute programs. Control over execution is implemented later. + +texconfig.kpse_init = false +texconfig.shell_escape = 't' + +kpse = { original = kpse } + +setmetatable(kpse, { + __index = function(kp,name) + local r = resolvers[name] + if not r then + r = function (...) + report_resolvers("not supported: %s(%s)",name,concat(...)) + end + rawset(kp,name,r) + end + return r + end +} ) + +-- First we check a couple of environment variables. Some might be +-- set already but we need then later on. We start with the system +-- font path. + +do + + local osfontdir = osgetenv("OSFONTDIR") + + if osfontdir and osfontdir ~= "" then + -- ok + elseif osname == "windows" then + ossetenv("OSFONTDIR","c:/windows/fonts//") + elseif osname == "macosx" then + ossetenv("OSFONTDIR","$HOME/Library/Fonts//;/Library/Fonts//;/System/Library/Fonts//") + end + +end + +-- Next comes the user's home path. We need this as later on we have +-- to replace ~ with its value. + +do + + local homedir = osgetenv(ostype == "windows" and 'USERPROFILE' or 'HOME') or '~' + + homedir = file.collapse_path(homedir) + + ossetenv("HOME", homedir) -- can be used in unix cnf files + ossetenv("USERPROFILE",homedir) -- can be used in windows cnf files + + environment.homedir = homedir + +end + +-- The following code sets the name of the own binary and its +-- path. This is fallback code as we have os.selfdir now. + +do + + local args = environment.original_arguments or arg -- this needs a cleanup + + local ownbin = environment.ownbin or args[-2] or arg[-2] or args[-1] or arg[-1] or arg[0] or "luatex" + local ownpath = environment.ownpath or os.selfdir + + ownbin = file.collapse_path(ownbin) + ownpath = file.collapse_path(ownpath) + + if not ownpath or ownpath == "" or ownpath == "unset" then + ownpath = args[-1] or arg[-1] + ownpath = ownpath and filedirname(gsub(ownpath,"\\","/")) + if not ownpath or ownpath == "" then + ownpath = args[-0] or arg[-0] + ownpath = ownpath and filedirname(gsub(ownpath,"\\","/")) + end + local binary = ownbin + if not ownpath or ownpath == "" then + ownpath = ownpath and filedirname(binary) + end + if not ownpath or ownpath == "" then + if os.binsuffix ~= "" then + binary = file.replacesuffix(binary,os.binsuffix) + end + local path = osgetenv("PATH") + if path then + for p in gmatch(path,"[^"..io.pathseparator.."]+") do + local b = filejoin(p,binary) + if lfs.isfile(b) then + -- we assume that after changing to the path the currentdir function + -- resolves to the real location and use this side effect here; this + -- trick is needed because on the mac installations use symlinks in the + -- path instead of real locations + local olddir = lfs.currentdir() + if lfs.chdir(p) then + local pp = lfs.currentdir() + if trace_locating and p ~= pp then + report_resolvers("following symlink '%s' to '%s'",p,pp) + end + ownpath = pp + lfs.chdir(olddir) + else + if trace_locating then + report_resolvers("unable to check path '%s'",p) + end + ownpath = p + end + break + end + end + end + end + if not ownpath or ownpath == "" then + ownpath = "." + report_resolvers("forcing fallback ownpath .") + elseif trace_locating then + report_resolvers("using ownpath '%s'",ownpath) + end + end + + environment.ownbin = ownbin + environment.ownpath = ownpath + +end + +resolvers.ownpath = environment.ownpath + +function resolvers.getownpath() + return environment.ownpath +end + +-- The self variables permit us to use only a few (or even no) +-- environment variables. + +do + + local ownpath = environment.ownpath or dir.current() + + if ownpath then + ossetenv('SELFAUTOLOC', file.collapse_path(ownpath)) + ossetenv('SELFAUTODIR', file.collapse_path(ownpath .. "/..")) + ossetenv('SELFAUTOPARENT', file.collapse_path(ownpath .. "/../..")) + else + report_resolvers("error: unable to locate ownpath") + os.exit() + end + +end + +-- The running os: + +-- todo: check is context sits here os.platform is more trustworthy +-- that the bin check as mtx-update runs from another path + +local texos = environment.texos or osgetenv("TEXOS") +local texmfos = environment.texmfos or osgetenv('SELFAUTODIR') + +if not texos or texos == "" then + texos = file.basename(texmfos) +end + +ossetenv('TEXMFOS', texmfos) -- full bin path +ossetenv('TEXOS', texos) -- partial bin parent +ossetenv('SELFAUTOSYSTEM',os.platform) -- bonus + +environment.texos = texos +environment.texmfos = texmfos + +-- The current root: + +local texroot = environment.texroot or osgetenv("TEXROOT") + +if not texroot or texroot == "" then + texroot = osgetenv('SELFAUTOPARENT') + ossetenv('TEXROOT',texroot) +end + +environment.texroot = file.collapse_path(texroot) + +-- Tracing. Todo ... + +function resolvers.settrace(n) -- no longer number but: 'locating' or 'detail' + if n then + trackers.disable("resolvers.*") + trackers.enable("resolvers."..n) + end +end + +resolvers.settrace(osgetenv("MTX_INPUT_TRACE")) + +-- todo: + +-- if profiler and osgetenv("MTX_PROFILE_RUN") == "YES" then +-- profiler.start("luatex-profile.log") +-- end |