broken testxml.lua and xmlhandler/dom.lua

[hhrhhr]

1. run without arguments:

   lua testxml.lua
   lua: testxml.lua:95: attempt to call a nil value (global 'read')
   stack traceback:
       testxml.lua:95: in main chunk
       [C]: in ?

   Need fix something like

   index = 1
   + if #arg == 0 then print(_usage); return end

2. domHandler dont work

   lua testxml.lua -dom people.xml
   File    people.xml
   ----------- Dom
   lua: .\xmlhandler/dom.lua:110: attempt to index a nil value (field 'current')
   stack traceback:
       .\xmlhandler/dom.lua:110: in function 'xmlhandler/dom.decl'
       .\XmlParser.lua:205: in upvalue 'parseXmlDeclaration'
       .\XmlParser.lua:367: in upvalue 'parseTagType'
       .\XmlParser.lua:449: in function 'XmlParser.parse'
       testxml.lua:124: in main chunk
       [C]: in ?

[manoelcampos]

Thanks for reporting.

Issues fixed. However, the dom.lua handler is inherited from the original project and I haven't found a utility for it and it may be removed.