{"name":"LuaRock \"htmlparser\"","tagline":"Parse HTML text into a tree of elements with selectors","body":"[1]: http://wscherphof.github.com/lua-set/\r\n[2]: http://api.jquery.com/category/selectors/\r\n\r\n##Install\r\nHtmlparser is a listed [LuaRock](http://luarocks.org/repositories/rocks/). Install using [LuaRocks](http://www.luarocks.org/): `luarocks install htmlparser`\r\n\r\n###Dependencies\r\nHtmlparser depends on [Lua 5.2](http://www.lua.org/download.html), and on the [\"set\"][1] LuaRock, which is installed along automatically. To be able to run the tests, [lunitx](https://github.com/dcurrie/lunit) also comes along as a LuaRock\r\n\r\n##Usage\r\nStart off with\r\n```lua\r\nrequire(\"luarocks.loader\")\r\nlocal htmlparser = require(\"htmlparser\")\r\n```\r\nThen, parse some html:\r\n```lua\r\nlocal root = htmlparser.parse(htmlstring)\r\n```\r\nThe input to parse may be the contents of a complete html document, or any valid html snippet, as long as all tags are correctly opened and closed.\r\nNow, find specific contained elements by selecting:\r\n```lua\r\nlocal elements = root:select(selectorstring)\r\n```\r\nOr in shorthand:\r\n```lua\r\nlocal elements = root(selectorstring)\r\n```\r\nThis wil return a list of elements, all of which are of the same type as the root element, and thus support selecting as well, if ever needed:\r\n```lua\r\nfor _,e in ipairs(elements) do\r\n\tprint(e.name)\r\n\tlocal subs = e(subselectorstring)\r\n\tfor _,sub in ipairs(subs) do\r\n\t\tprint(\"\", sub.name)\r\n\tend\r\nend\r\n```\r\nThe root element is a container for the top level elements in the parsed text, i.e. the `<html>` element in a parsed html document would be a child of the returned root element.\r\n\r\n##Selectors\r\nSupported selectors are a subset of [jQuery's selectors][2]:\r\n\r\n- `\"*\"` all contained elements\r\n- `\"element\"` elements with the given tagname\r\n- `\"#id\"` elements with the given id attribute value\r\n- `\".class\"` elements with the given classname in the class attribute\r\n- `\"[attribute]\"` elements with an attribute of the given name\r\n- `\"[attribute='value']\"` equals: elements with the given value for the given attribute\r\n- `\"[attribute!='value']\"` not equals: elements without the given attribute, or having the attribute, but with a different value\r\n- `\"[attribute|='value']\"` prefix: attribute's value is given value, or starts with given value, followed by a hyphen (`-`)\r\n- `\"[attribute*='value']\"` contains: attribute's value contains given value\r\n- `\"[attribute~='value']\"` word: attribute's value is a space-separated token, where one of the tokens is the given value\r\n- `\"[attribute^='value']\"` starts with: attribute's value starts with given value\r\n- `\"[attribute$='value']\"` ends with: attribute's value ends with given value\r\n- `\":not(selectorstring)\"` elements not selected by given selector string\r\n- `\"ancestor descendant\"` elements selected by the `descendant` selector string, that are a descendant of any element selected by the `ancestor` selector string\r\n- `\"parent > child\"` elements selected by the `child` selector string, that are a child element of any element selected by the `parent` selector string\r\n\r\nSelectors can be combined; e.g. `\".class:not([attribute]) element.class\"`\r\n\r\n##Element type\r\nAll tree elements provide, apart from `:select` and `()`, the following accessors:\r\n\r\n###Basic\r\n- `.name` the element's tagname\r\n- `.attributes` a table with keys and values for the element's attributes; `{}` if none\r\n- `.id` the value of the element's id attribute; `nil` if not present\r\n- `.classes` an array with the classes listed in element's class attribute; `{}` if none\r\n- `:getcontent()` the raw text between the opening and closing tags of the element; `\"\"`ifnone\r\n-`.nodes`anarraywiththeelement'schildelements,`{}`ifnone\r\n-`.parent`theelementthatcontainsthiselement;`root.parent`is`nil`\r\n\r\n###Other\r\n-`.index`sequencenumberofelementsinorderofappearance;rootindexis`0`\r\n-`:ge
