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parse-xml-stream.lua
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executable file
·218 lines (194 loc) · 6.11 KB
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#!/usr/bin/env luajit
local xmlua = require("xmlua")
local listener = {}
function listener:start_document()
print("Start document")
end
function listener:print_element_content(content, indent)
if content.type == "PCDATA" then
print(indent .. "type: " .. content.type)
print(indent .. "occur: " .. content.occur)
elseif content.type == "ELEMENT" then
print(indent .. "type: " .. content.type)
print(indent .. "occur: " .. content.occur)
print(indent .. "prefix: " .. (content.prefix or ""))
print(indent .. "name: " .. content.name)
else
print(indent .. "type: " .. content.type)
print(indent .. "occur: " .. content.occur)
for i, child in pairs(content.children) do
print(indent .. "child[" .. i .. "]:")
self:print_element_content(child, indent .. " ")
end
end
end
function listener:element_declaration(name, element_type, content)
print("Element name: " .. name)
print("Element type: " .. element_type)
if element_type == "EMPTY" then
return
end
print("Content:")
self:print_element_content(content, " ")
end
function listener:attribute_declaration(name,
attribute_name,
attribute_type,
default_value_type,
default_value,
enumerated_values)
print("Element name: " .. name)
print("Attribute name: " .. attribute_name)
print("Attribute type: " .. attribute_type)
if default_value then
print("Default value type: " .. default_value_type)
print("Default value: " .. default_value)
end
for _, v in pairs(enumerated_values) do
print("Enumrated value: " .. v)
end
end
function listener:notation_declaration(name, public_id, system_id)
print("Notation name: " .. name)
if public_id ~= nil then
print("Notation public id: " .. public_id)
end
if system_id ~= nil then
print("Notation system id: " .. system_id)
end
end
function listener:unparsed_entity_declaration(name,
public_id,
system_id,
notation_name)
print("Unparserd entity name: " .. name)
if public_id ~= nil then
print("Unparserd entity public id: " .. public_id)
end
if system_id ~= nil then
print("Unparserd entity system id: " .. system_id)
end
print("Unparserd entity notation_name: " .. notation_name)
end
function listener:entity_declaration(name,
entity_type,
public_id,
system_id,
content)
print("Entity name: " .. name)
print("Entity type: " .. entity_type)
if public_id ~= nil then
print("Entity public id: " .. public_id)
end
if system_id ~= nil then
print("Entity system id: " .. system_id)
end
print("Entity content: " .. content)
end
function listener:internal_subset(name, external_id, system_id)
print("Internal subset name: " .. name)
if external_id ~= nil then
print("Internal subset external id: " .. external_id)
end
if system_id ~= nil then
print("Internal subset system id: " .. system_id)
end
end
function listener:external_subset(name, external_id, system_id)
print("External subset name: " .. name)
if external_id ~= nil then
print("External subset external id: " .. external_id)
end
if system_id ~= nil then
print("External subset system id: " .. system_id)
end
end
function listener:cdata_block(cdata_block)
print("CDATA block: " .. cdata_block)
end
function listener:comment(comment)
print("Comment: " .. comment)
end
function listener:processing_instruction(target, data)
print("Processing instruction target: " .. target)
print("Processing instruction data: " .. data)
end
function listener:ignorable_whitespace(ignorable_whitespaces)
print("Ignorable whitespaces: " .. "\"" .. ignorable_whitespaces .. "\"")
print("Ignorable whitespaces length: " .. #ignorable_whitespaces)
end
function listener:text(text)
print("Text: <" .. text .. ">")
end
function listener:reference(entity_name)
print("Reference entity name: " .. entity_name)
end
function listener:start_element(local_name,
prefix,
uri,
namespaces,
attributes)
print("Start element: " .. local_name)
if prefix then
print(" prefix: " .. prefix)
end
if uri then
print(" URI: " .. uri)
end
for namespace_prefix, namespace_uri in pairs(namespaces) do
if namespace_prefix == "" then
print(" Default namespace: " .. namespace_uri)
else
print(" Namespace: " .. namespace_prefix .. ": " .. namespace_uri)
end
end
if attributes then
if #attributes > 0 then
print(" Attributes:")
for i, attribute in pairs(attributes) do
local name
if attribute.prefix then
name = attribute.prefix .. ":" .. attribute.local_name
else
name = attribute.local_name
end
if attribute.uri then
name = name .. "{" .. attribute.uri .. "}"
end
print(" " .. name .. ": " .. attribute.value)
end
end
end
end
function listener:end_element(local_name, prefix, uri)
print("End element: " .. local_name)
if prefix then
print(" prefix: " .. prefix)
end
if uri then
print(" URI: " .. uri)
end
end
function listener:warning(message)
print("Warning message:", message)
print("Pedantic:", parser.is_pedantic)
end
function listener:error(xml_error)
print("Error domain:", xml_error["domain"])
print("Error code:", xml_error["code"])
print("Error message:", xml_error["message"])
print("Error level:", xml_error["level"])
print("Error line:", xml_error["line"])
end
function listener:end_document()
print("End document")
end
local parser = xmlua.XMLStreamSAXParser.new(listener)
while true do
local line = io.stdin:read()
if not line then
parser:finish()
break
end
parser:parse(line)
end