Moving on to beta2.

samples/lpr.lua

@@ -0,0 +1,51 @@
+local lp = require("lp")
+
+local function usage()
+  print('\nUsage: lp filename [keyword=val...]\n')
+  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
+    if arg[1] ~= "query" then
+        r,e=lp.send(arg[1],opt)
+        io.stderr:write(tostring(r or e),'\n')
+    else
+        r,e=lp.query(opt)
+        io.stderr:write(tostring(r or e), '\n')
+    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