ymin=[ys,ymin].min; ymax=[ys,ymax].max
node=points[i][2].to_i
tagstr=array2tag(points[i][4])
+ tagstr=tagstr.gsub(/[\000-\037]/,"")
tagsql="'"+sqlescape(tagstr)+"'"
# compare node
insertsql =''
currentsql=''
attributes.each do |k,v|
- if v=='' then next end
+ if v=='' or v.nil? then next end
if v[0,6]=='(type ' then next end
if insertsql !='' then insertsql +=',' end
if currentsql!='' then currentsql+=',' end
+ k=k.gsub(/[\000-\037]/,"")
+ v=v.gsub(/[\000-\037]/,"")
insertsql +="(#{way},'"+sqlescape(k)+"','"+sqlescape(v)+"',#{version})"
currentsql+="(#{way},'"+sqlescape(k)+"','"+sqlescape(v)+"')"
end