luasocket/samples/lpr.lua

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local lp = require("lp")
local function usage()
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print('\nUsage: lua lptest.lua [filename] [keyword=val...]\n')
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print('Valid keywords are :')
print(
' host=remote host or IP address (default "localhost")\n' ..
' queue=remote queue or printer name (default "printer")\n' ..
' port=remote port number (default 515)\n' ..
' user=sending user name\n' ..
' format=["binary" | "text" | "ps" | "pr" | "fortran"] (default "binary")\n' ..
' banner=true|false\n' ..
' indent=number of columns to indent\n' ..
' mail=email of address to notify when print is complete\n' ..
' title=title to use for "pr" format\n' ..
' width=width for "text" or "pr" formats\n' ..
' class=\n' ..
' job=\n' ..
' name=\n' ..
' localbind=true|false\n'
)
return nil
end
if not arg or not arg[1] then
return usage()
end
do
local s="opt = {"
for i = 2 , table.getn(arg), 1 do
s = s .. string.gsub(arg[i],"[%s%c%p]*([%w]*)=([\"]?[%w%s_!@#$%%^&*()<>:;]+[\"]\?\.?)","%1%=\"%2\",\n")
end
s = s .. "};\n"
assert(loadstring(s))();
if not arg[2] then
return usage()
end
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if arg[1] ~= "query" then
r,e=lp.send(arg[1],opt)
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io.stdout:write(tostring(r or e),'\n')
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else
r,e=lp.query(opt)
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io.stdout:write(tostring(r or e), '\n')
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end
end
-- trivial tests
--lua lp.lua lp.lua queue=default host=localhost
--lua lp.lua lp.lua queue=default host=localhost format=binary localbind=1
--lua lp.lua query queue=default host=localhost