mirror of
https://github.com/msva/lua-htmlparser.git
synced 2024-11-04 23:34:20 +00:00
64db283c1d
Do demonstrate how to use it to do something useful. Maybe this could be generalized. But maybe better in a seperate module.
78 lines
1.5 KiB
Lua
78 lines
1.5 KiB
Lua
local HtmlParser = require("HtmlParser")
|
|
|
|
local io = require("io")
|
|
local file = io.input("./test.html")
|
|
local text = io.read("*a") file:close()
|
|
|
|
local root = HtmlParser.parse(text)
|
|
|
|
-- print the tree
|
|
local function p(n)
|
|
local space = string.rep(" ", n.level)
|
|
local s = space .. n.name
|
|
for i,v in ipairs(n.nodes) do
|
|
s = s .. " nodes[" .. i .. "]=" .. v.name
|
|
end
|
|
for k,v in pairs(n.attributes) do
|
|
s = s .. " " .. k .. "=[" .. v .. "]"
|
|
end
|
|
print(s)
|
|
for i,v in ipairs(n.nodes) do
|
|
p(v)
|
|
end
|
|
end
|
|
p(root)
|
|
|
|
local function select( s )
|
|
print ""
|
|
print("->", s)
|
|
local tags = root:select(s)
|
|
for i,t in ipairs(tags) do
|
|
print(t.name)
|
|
end
|
|
print(# tags)
|
|
end
|
|
select("*")
|
|
select("link")
|
|
select("#/contacts/4711")
|
|
select(".chapters")
|
|
select("[href]")
|
|
select("span.firstname")
|
|
select("ul[id]")
|
|
|
|
select("#/contacts/4711")
|
|
select("#/contacts/4711 *")
|
|
select("#/contacts/4711 .lastname")
|
|
select("body li[id]")
|
|
|
|
select("ul")
|
|
select("ul *")
|
|
select("ul > *")
|
|
select("body [class]")
|
|
select("body > [class]")
|
|
|
|
local sel, chapters = root:select("ol.chapters > li"), {}
|
|
for i,v in ipairs(sel) do
|
|
table.insert(chapters, v:getcontent())
|
|
end
|
|
print("\nchapters")
|
|
for i,v in ipairs(chapters) do
|
|
print(i, v)
|
|
end
|
|
|
|
local sel, contacts = root:select("ul.contacts > li"), {}
|
|
for i,v in ipairs(sel) do
|
|
local c = {}
|
|
for fi,fv in ipairs(v:select("span[class]")) do
|
|
c[fv.classes[1]] = fv:getcontent()
|
|
end
|
|
contacts[v.id] = c
|
|
end
|
|
print("\ncontacts")
|
|
for k,v in pairs(contacts) do
|
|
print(k)
|
|
for fk,fv in pairs(v) do
|
|
print(fk, fv)
|
|
end
|
|
end
|