diff options
Diffstat (limited to 'Master/texmf-dist/tex/context/base/l-os.lua')
| -rw-r--r-- | Master/texmf-dist/tex/context/base/l-os.lua | 139 |
1 files changed, 104 insertions, 35 deletions
diff --git a/Master/texmf-dist/tex/context/base/l-os.lua b/Master/texmf-dist/tex/context/base/l-os.lua index fba2cd31770..91150623945 100644 --- a/Master/texmf-dist/tex/context/base/l-os.lua +++ b/Master/texmf-dist/tex/context/base/l-os.lua @@ -6,32 +6,119 @@ if not modules then modules = { } end modules ['l-os'] = { license = "see context related readme files" } +-- This file deals with some operating system issues. Please don't bother me +-- with the pros and cons of operating systems as they all have their flaws +-- and benefits. Bashing one of them won't help solving problems and fixing +-- bugs faster and is a waste of time and energy. +-- +-- path separators: / or \ ... we can use / everywhere +-- suffixes : dll so exe <none> ... no big deal +-- quotes : we can use "" in most cases +-- expansion : unless "" are used * might give side effects +-- piping/threads : somewhat different for each os +-- locations : specific user file locations and settings can change over time +-- +-- os.type : windows | unix (new, we already guessed os.platform) +-- os.name : windows | msdos | linux | macosx | solaris | .. | generic (new) +-- os.platform : extended os.name with architecture + -- maybe build io.flush in os.execute -local find, format, gsub = string.find, string.format, string.gsub +local os = os +local find, format, gsub, upper = string.find, string.format, string.gsub, string.upper +local concat = table.concat local random, ceil = math.random, math.ceil +local rawget, rawset, type, getmetatable, setmetatable, tonumber = rawget, rawset, type, getmetatable, setmetatable, tonumber + +-- The following code permits traversing the environment table, at least +-- in luatex. Internally all environment names are uppercase. + +if not os.__getenv__ then + + os.__getenv__ = os.getenv + os.__setenv__ = os.setenv -local execute, spawn, exec, ioflush = os.execute, os.spawn or os.execute, os.exec or os.execute, io.flush + if os.env then + + local osgetenv = os.getenv + local ossetenv = os.setenv + local osenv = os.env local _ = osenv.PATH -- initialize the table + + function os.setenv(k,v) + if v == nil then + v = "" + end + local K = upper(k) + osenv[K] = v + if type(v) == "table" then + v = concat(v,";") -- path + end + ossetenv(K,v) + end + + function os.getenv(k) + local K = upper(k) + local v = osenv[K] or osenv[k] or osgetenv(K) or osgetenv(k) + if v == "" then + return nil + else + return v + end + end + + else + + local ossetenv = os.setenv + local osgetenv = os.getenv + local osenv = { } + + function os.setenv(k,v) + if v == nil then + v = "" + end + local K = upper(k) + osenv[K] = v + end + + function os.getenv(k) + local K = upper(k) + local v = osenv[K] or osgetenv(K) or osgetenv(k) + if v == "" then + return nil + else + return v + end + end + + local function __index(t,k) + return os.getenv(k) + end + local function __newindex(t,k,v) + os.setenv(k,v) + end + + os.env = { } + + setmetatable(os.env, { __index = __index, __newindex = __newindex } ) + + end + +end + +-- end of environment hack + +local execute, spawn, exec, iopopen, ioflush = os.execute, os.spawn or os.execute, os.exec or os.execute, io.popen, io.flush function os.execute(...) ioflush() return execute(...) end function os.spawn (...) ioflush() return spawn (...) end function os.exec (...) ioflush() return exec (...) end +function io.popen (...) ioflush() return iopopen(...) end function os.resultof(command) - ioflush() -- else messed up logging local handle = io.popen(command,"r") - if not handle then - -- print("unknown command '".. command .. "' in os.resultof") - return "" - else - return handle:read("*all") or "" - end + return handle and handle:read("*all") or "" end ---~ os.type : windows | unix (new, we already guessed os.platform) ---~ os.name : windows | msdos | linux | macosx | solaris | .. | generic (new) ---~ os.platform : extended os.name with architecture - if not io.fileseparator then if find(os.getenv("PATH"),";") then io.fileseparator, io.pathseparator, os.type = "\\", ";", os.type or "mswin" @@ -89,7 +176,7 @@ end -- no need for function anymore as we have more clever code and helpers now -- this metatable trickery might as well disappear -os.resolvers = os.resolvers or { } +os.resolvers = os.resolvers or { } -- will become private local resolvers = os.resolvers @@ -102,24 +189,6 @@ end setmetatable(os,osmt) -if not os.setenv then - - -- we still store them but they won't be seen in - -- child processes although we might pass them some day - -- using command concatination - - local env, getenv = { }, os.getenv - - function os.setenv(k,v) - env[k] = v - end - - function os.getenv(k) - return env[k] or getenv(k) - end - -end - -- we can use HOSTTYPE on some platforms local name, platform = os.name or "linux", os.getenv("MTX_PLATFORM") or "" @@ -159,7 +228,7 @@ elseif os.type == "windows" then elseif name == "linux" then function os.resolvers.platform(t,k) - -- we sometims have HOSTTYPE set so let's check that first + -- we sometimes have HOSTTYPE set so let's check that first local platform, architecture = "", os.getenv("HOSTTYPE") or os.resultof("uname -m") or "" if find(architecture,"x86_64") then platform = "linux-64" @@ -237,10 +306,10 @@ elseif name == "freebsd" then elseif name == "kfreebsd" then function os.resolvers.platform(t,k) - -- we sometims have HOSTTYPE set so let's check that first + -- we sometimes have HOSTTYPE set so let's check that first local platform, architecture = "", os.getenv("HOSTTYPE") or os.resultof("uname -m") or "" if find(architecture,"x86_64") then - platform = "kfreebsd-64" + platform = "kfreebsd-amd64" else platform = "kfreebsd-i386" end |