diff options
Diffstat (limited to 'tex/context/base/mkiv/l-os.lua')
| -rw-r--r-- | tex/context/base/mkiv/l-os.lua | 558 |
1 files changed, 558 insertions, 0 deletions
diff --git a/tex/context/base/mkiv/l-os.lua b/tex/context/base/mkiv/l-os.lua new file mode 100644 index 000000000..0a86ea6d6 --- /dev/null +++ b/tex/context/base/mkiv/l-os.lua @@ -0,0 +1,558 @@ +if not modules then modules = { } end modules ['l-os'] = { + 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" +} + +-- 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 + +-- os.sleep() => socket.sleep() +-- math.randomseed(tonumber(string.sub(string.reverse(tostring(math.floor(socket.gettime()*10000))),1,6))) + +local os = os +local date, time = os.date, os.time +local find, format, gsub, upper, gmatch = string.find, string.format, string.gsub, string.upper, string.gmatch +local concat = table.concat +local random, ceil, randomseed = math.random, math.ceil, math.randomseed +local rawget, rawset, type, getmetatable, setmetatable, tonumber, tostring = rawget, rawset, type, getmetatable, setmetatable, tonumber, tostring + +-- The following code permits traversing the environment table, at least +-- in luatex. Internally all environment names are uppercase. + +-- The randomseed in Lua is not that random, although this depends on the operating system as well +-- as the binary (Luatex is normally okay). But to be sure we set the seed anyway. + +math.initialseed = tonumber(string.sub(string.reverse(tostring(ceil(socket and socket.gettime()*10000 or time()))),1,6)) + +randomseed(math.initialseed) + +if not os.__getenv__ then + + os.__getenv__ = os.getenv + os.__setenv__ = os.setenv + + 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 = os.execute +local iopopen = io.popen + +function os.resultof(command) + local handle = iopopen(command,"r") -- already has flush + if handle then + local result = handle:read("*all") or "" + handle:close() + return result + else + return "" + end +end + +if not io.fileseparator then + if find(os.getenv("PATH"),";",1,true) then + io.fileseparator, io.pathseparator, os.type = "\\", ";", os.type or "mswin" + else + io.fileseparator, io.pathseparator, os.type = "/" , ":", os.type or "unix" + end +end + +os.type = os.type or (io.pathseparator == ";" and "windows") or "unix" +os.name = os.name or (os.type == "windows" and "mswin" ) or "linux" + +if os.type == "windows" then + os.libsuffix, os.binsuffix, os.binsuffixes = 'dll', 'exe', { 'exe', 'cmd', 'bat' } +else + os.libsuffix, os.binsuffix, os.binsuffixes = 'so', '', { '' } +end + +local launchers = { + windows = "start %s", + macosx = "open %s", + unix = "$BROWSER %s &> /dev/null &", +} + +function os.launch(str) + execute(format(launchers[os.name] or launchers.unix,str)) +end + +if not os.times then -- ? + -- utime = user time + -- stime = system time + -- cutime = children user time + -- cstime = children system time + function os.times() + return { + utime = os.gettimeofday(), -- user + stime = 0, -- system + cutime = 0, -- children user + cstime = 0, -- children system + } + end +end + + +local gettimeofday = os.gettimeofday or os.clock +os.gettimeofday = gettimeofday + +local startuptime = gettimeofday() + +function os.runtime() + return gettimeofday() - startuptime +end + +-- print(os.gettimeofday()-os.time()) +-- os.sleep(1.234) +-- print (">>",os.runtime()) +-- print(os.date("%H:%M:%S",os.gettimeofday())) +-- print(os.date("%H:%M:%S",os.time())) + +-- no need for function anymore as we have more clever code and helpers now +-- this metatable trickery might as well disappear + +local resolvers = os.resolvers or { } +os.resolvers = resolvers + +setmetatable(os, { __index = function(t,k) + local r = resolvers[k] + return r and r(t,k) or nil -- no memoize +end }) + +-- we can use HOSTTYPE on some platforms + +local name, platform = os.name or "linux", os.getenv("MTX_PLATFORM") or "" + +local function guess() + local architecture = os.resultof("uname -m") or "" + if architecture ~= "" then + return architecture + end + architecture = os.getenv("HOSTTYPE") or "" + if architecture ~= "" then + return architecture + end + return os.resultof("echo $HOSTTYPE") or "" +end + +-- os.bits = 32 | 64 + +if platform ~= "" then + + os.platform = platform + +elseif os.type == "windows" then + + -- we could set the variable directly, no function needed here + + -- PROCESSOR_ARCHITECTURE : binary platform + -- PROCESSOR_ARCHITEW6432 : OS platform + + function resolvers.platform(t,k) + local platform, architecture = "", os.getenv("PROCESSOR_ARCHITECTURE") or "" + if find(architecture,"AMD64",1,true) then + -- platform = "mswin-64" + platform = "win64" + else + platform = "mswin" + end + os.setenv("MTX_PLATFORM",platform) + os.platform = platform + return platform + end + +elseif name == "linux" then + + function resolvers.platform(t,k) + -- 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",1,true) then + platform = "linux-64" + elseif find(architecture,"ppc",1,true) then + platform = "linux-ppc" + else + platform = "linux" + end + os.setenv("MTX_PLATFORM",platform) + os.platform = platform + return platform + end + +elseif name == "macosx" then + + --[[ + Identifying the architecture of OSX is quite a mess and this + is the best we can come up with. For some reason $HOSTTYPE is + a kind of pseudo environment variable, not known to the current + environment. And yes, uname cannot be trusted either, so there + is a change that you end up with a 32 bit run on a 64 bit system. + Also, some proper 64 bit intel macs are too cheap (low-end) and + therefore not permitted to run the 64 bit kernel. + ]]-- + + function resolvers.platform(t,k) + -- local platform, architecture = "", os.getenv("HOSTTYPE") or "" + -- if architecture == "" then + -- architecture = os.resultof("echo $HOSTTYPE") or "" + -- end + local platform, architecture = "", os.resultof("echo $HOSTTYPE") or "" + if architecture == "" then + -- print("\nI have no clue what kind of OSX you're running so let's assume an 32 bit intel.\n") + platform = "osx-intel" + elseif find(architecture,"i386",1,true) then + platform = "osx-intel" + elseif find(architecture,"x86_64",1,true) then + platform = "osx-64" + else + platform = "osx-ppc" + end + os.setenv("MTX_PLATFORM",platform) + os.platform = platform + return platform + end + +elseif name == "sunos" then + + function resolvers.platform(t,k) + local platform, architecture = "", os.resultof("uname -m") or "" + if find(architecture,"sparc",1,true) then + platform = "solaris-sparc" + else -- if architecture == 'i86pc' + platform = "solaris-intel" + end + os.setenv("MTX_PLATFORM",platform) + os.platform = platform + return platform + end + +elseif name == "freebsd" then + + function resolvers.platform(t,k) + local platform, architecture = "", os.resultof("uname -m") or "" + if find(architecture,"amd64",1,true) then + platform = "freebsd-amd64" + else + platform = "freebsd" + end + os.setenv("MTX_PLATFORM",platform) + os.platform = platform + return platform + end + +elseif name == "kfreebsd" then + + function resolvers.platform(t,k) + -- 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",1,true) then + platform = "kfreebsd-amd64" + else + platform = "kfreebsd-i386" + end + os.setenv("MTX_PLATFORM",platform) + os.platform = platform + return platform + end + +else + + -- platform = "linux" + -- os.setenv("MTX_PLATFORM",platform) + -- os.platform = platform + + function resolvers.platform(t,k) + local platform = "linux" + os.setenv("MTX_PLATFORM",platform) + os.platform = platform + return platform + end + +end + +os.newline = name == "windows" and "\013\010" or "\010" -- crlf or lf + +function resolvers.bits(t,k) + local bits = find(os.platform,"64",1,true) and 64 or 32 + os.bits = bits + return bits +end + +-- beware, we set the randomseed + +-- from wikipedia: Version 4 UUIDs use a scheme relying only on random numbers. This algorithm sets the +-- version number as well as two reserved bits. All other bits are set using a random or pseudorandom +-- data source. Version 4 UUIDs have the form xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx with hexadecimal +-- digits x and hexadecimal digits 8, 9, A, or B for y. e.g. f47ac10b-58cc-4372-a567-0e02b2c3d479. +-- +-- as we don't call this function too often there is not so much risk on repetition + +local t = { 8, 9, "a", "b" } + +function os.uuid() + return format("%04x%04x-4%03x-%s%03x-%04x-%04x%04x%04x", + random(0xFFFF),random(0xFFFF), + random(0x0FFF), + t[ceil(random(4))] or 8,random(0x0FFF), + random(0xFFFF), + random(0xFFFF),random(0xFFFF),random(0xFFFF) + ) +end + +local d + +function os.timezone(delta) + d = d or tonumber(tonumber(date("%H")-date("!%H"))) + if delta then + if d > 0 then + return format("+%02i:00",d) + else + return format("-%02i:00",-d) + end + else + return 1 + end +end + +local timeformat = format("%%s%s",os.timezone(true)) +local dateformat = "!%Y-%m-%d %H:%M:%S" +local lasttime = nil +local lastdate = nil + +function os.fulltime(t,default) + t = t and tonumber(t) or 0 + if t > 0 then + -- valid time + elseif default then + return default + else + t = time() + end + if t ~= lasttime then + lasttime = t + lastdate = format(timeformat,date(dateformat)) + end + return lastdate +end + +local dateformat = "%Y-%m-%d %H:%M:%S" +local lasttime = nil +local lastdate = nil + +function os.localtime(t,default) + t = t and tonumber(t) or 0 + if t > 0 then + -- valid time + elseif default then + return default + else + t = time() + end + if t ~= lasttime then + lasttime = t + lastdate = date(dateformat,t) + end + return lastdate +end + +function os.converttime(t,default) + local t = tonumber(t) + if t and t > 0 then + return date(dateformat,t) + else + return default or "-" + end +end + +local memory = { } + +local function which(filename) + local fullname = memory[filename] + if fullname == nil then + local suffix = file.suffix(filename) + local suffixes = suffix == "" and os.binsuffixes or { suffix } + for directory in gmatch(os.getenv("PATH"),"[^" .. io.pathseparator .."]+") do + local df = file.join(directory,filename) + for i=1,#suffixes do + local dfs = file.addsuffix(df,suffixes[i]) + if io.exists(dfs) then + fullname = dfs + break + end + end + end + if not fullname then + fullname = false + end + memory[filename] = fullname + end + return fullname +end + +os.which = which +os.where = which + +function os.today() + return date("!*t") -- table with values +end + +function os.now() + return date("!%Y-%m-%d %H:%M:%S") -- 2011-12-04 14:59:12 +end + +-- if not os.sleep and socket then +-- os.sleep = socket.sleep +-- end + +if not os.sleep then + local socket = socket + function os.sleep(n) + if not socket then + -- so we delay ... if os.sleep is really needed then one should also + -- be sure that socket can be found + socket = require("socket") + end + socket.sleep(n) + end +end + +-- print(os.which("inkscape.exe")) +-- print(os.which("inkscape")) +-- print(os.which("gs.exe")) +-- print(os.which("ps2pdf")) + +-- These are moved from core-con.lua (as I needed them elsewhere). + +local function isleapyear(year) + return (year % 400 == 0) or ((year % 100 ~= 0) and (year % 4 == 0)) +end + +os.isleapyear = isleapyear + +-- nicer: +-- +-- local days = { +-- [false] = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }, +-- [true] = { 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 } +-- } +-- +-- local function nofdays(year,month) +-- return days[isleapyear(year)][month] +-- return month == 2 and isleapyear(year) and 29 or days[month] +-- end +-- +-- more efficient: + +local days = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 } + +local function nofdays(year,month) + if not month then + return isleapyear(year) and 365 or 364 + else + return month == 2 and isleapyear(year) and 29 or days[month] + end +end + +os.nofdays = nofdays + +function os.weekday(day,month,year) + return date("%w",time { year = year, month = month, day = day }) + 1 +end + +function os.validdate(year,month,day) + -- we assume that all three values are set + -- year is always ok, even if lua has a 1970 time limit + if month < 1 then + month = 1 + elseif month > 12 then + month = 12 + end + if day < 1 then + day = 1 + else + local max = nofdays(year,month) + if day > max then + day = max + end + end + return year, month, day +end |