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OS type and CPU architecture detection in Lua language
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local function getOS() | |
local raw_os_name, raw_arch_name = '', '' | |
-- LuaJIT shortcut | |
if jit and jit.os and jit.arch then | |
raw_os_name = jit.os | |
raw_arch_name = jit.arch | |
else | |
-- is popen supported? | |
local popen_status, popen_result = pcall(io.popen, "") | |
if popen_status then | |
popen_result:close() | |
-- Unix-based OS | |
raw_os_name = io.popen('uname -s','r'):read('*l') | |
raw_arch_name = io.popen('uname -m','r'):read('*l') | |
else | |
-- Windows | |
local env_OS = os.getenv('OS') | |
local env_ARCH = os.getenv('PROCESSOR_ARCHITECTURE') | |
if env_OS and env_ARCH then | |
raw_os_name, raw_arch_name = env_OS, env_ARCH | |
end | |
end | |
end | |
raw_os_name = (raw_os_name):lower() | |
raw_arch_name = (raw_arch_name):lower() | |
local os_patterns = { | |
['windows'] = 'Windows', | |
['linux'] = 'Linux', | |
['mac'] = 'Mac', | |
['darwin'] = 'Mac', | |
['^mingw'] = 'Windows', | |
['^cygwin'] = 'Windows', | |
['bsd$'] = 'BSD', | |
['SunOS'] = 'Solaris', | |
} | |
local arch_patterns = { | |
['^x86$'] = 'x86', | |
['i[%d]86'] = 'x86', | |
['amd64'] = 'x86_64', | |
['x86_64'] = 'x86_64', | |
['Power Macintosh'] = 'powerpc', | |
['^arm'] = 'arm', | |
['^mips'] = 'mips', | |
} | |
local os_name, arch_name = 'unknown', 'unknown' | |
for pattern, name in pairs(os_patterns) do | |
if raw_os_name:match(pattern) then | |
os_name = name | |
break | |
end | |
end | |
for pattern, name in pairs(arch_patterns) do | |
if raw_arch_name:match(pattern) then | |
arch_name = name | |
break | |
end | |
end | |
return os_name, arch_name | |
end | |
if select(1, ...) ~= 'os_name' then | |
print(("%q %q"):format(getOS())) | |
else | |
return { | |
getOS = getOS, | |
} | |
end |
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