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namespace FSharp.Data
open FSharp.Data
open System.Runtime.CompilerServices
[<AutoOpen>]
module private DocumentUtils =
let inline toLower (s: string) = s.ToLowerInvariant()
let inline getNameSet names = names |> Seq.map toLower |> Set.ofSeq
// --------------------------------------------------------------------------------------
[<CompilationRepresentation(CompilationRepresentationFlags.ModuleSuffix)>]
/// Module with operations on HTML documents
module HtmlDocument =
/// Returns the doctype of the document
let docType doc =
match doc with
| HtmlDocument(docType = docType) -> docType
//// Gets all of the root elements of the document
let elements doc =
match doc with
| HtmlDocument(elements = elements) -> elements
/// <summary>
/// Returns all of the root elements of the document that match the set of names
/// </summary>
/// <param name="names">The set of names to match</param>
/// <param name="doc">The given document</param>
let inline elementsNamed names doc =
let nameSet = getNameSet names
doc |> elements |> List.filter (HtmlNode.name >> nameSet.Contains)
/// <summary>
/// Gets all of the descendants of this document that statisfy the given predicate
/// </summary>
/// <param name="recurseOnMatch">If a match is found continues down the tree matching child elements</param>
/// <param name="predicate">The predicate by which to match the nodes to return</param>
/// <param name="doc">The given document</param>
let inline descendants recurseOnMatch predicate doc =
doc
|> elements
|> Seq.collect (HtmlNode.descendantsAndSelf recurseOnMatch predicate)
/// <summary>
/// Finds all of the descendant nodes of this document that match the given set of names
/// </summary>
/// <param name="recurseOnMatch">If a match is found continues down the tree matching child elements</param>
/// <param name="names">The set of names to match</param>
/// <param name="doc">The given document</param>
let inline descendantsNamed recurseOnMatch names doc =
let nameSet = getNameSet names
doc |> descendants recurseOnMatch (HtmlNode.name >> nameSet.Contains)
/// <summary>
/// Gets all of the descendants of this document that statisfy the given predicate
/// </summary>
/// <param name="recurseOnMatch">If a match is found continues down the tree matching child elements</param>
/// <param name="predicate">The predicate by which to match the nodes to return</param>
/// <param name="doc">The given document</param>
let inline descendantsWithPath recurseOnMatch predicate doc =
doc
|> elements
|> Seq.collect (HtmlNode.descendantsAndSelfWithPath recurseOnMatch predicate)
/// <summary>
/// Finds all of the descendant nodes of this document that match the given set of names
/// </summary>
/// <param name="recurseOnMatch">If a match is found continues down the tree matching child elements</param>
/// <param name="names">The set of names to match</param>
/// <param name="doc">The given document</param>
let inline descendantsNamedWithPath recurseOnMatch names doc =
let nameSet = getNameSet names
doc |> descendantsWithPath recurseOnMatch (HtmlNode.name >> nameSet.Contains)
/// <summary>
/// Finds the body element of the given document,
/// this throws an exception if no body element exists.
/// </summary>
/// <param name="x">The given document</param>
let inline body (x: HtmlDocument) =
match List.ofSeq <| descendantsNamed false [ "body" ] x with
| [] -> failwith "No element body found!"
| body :: _ -> body
/// <summary>
/// Tries to find the body element of the given document.
/// </summary>
/// <param name="x">The given document</param>
let inline tryGetBody (x: HtmlDocument) =
match List.ofSeq <| descendantsNamed false [ "body" ] x with
| [] -> None
| body :: _ -> Some body
/// <summary>
/// Finds the html element of the given document,
/// this throws an exception if no html element exists.
/// </summary>
/// <param name="x">The given document</param>
let inline html (x: HtmlDocument) =
match List.ofSeq <| descendantsNamed false [ "html" ] x with
| [] -> failwith "No element html found!"
| html :: _ -> html
/// <summary>
/// Tries to find the html element of the given document.
/// </summary>
/// <param name="x">The given document</param>
let inline tryGetHtml (x: HtmlDocument) =
match List.ofSeq <| descendantsNamed false [ "html" ] x with
| [] -> None
| html :: _ -> Some html
[<Extension>]
/// Extension methods with operations on HTML documents
type HtmlDocumentExtensions =
/// <summary>
/// Returns all of the root elements of the current document
/// </summary>
/// <param name="doc">The given document</param>
[<Extension>]
static member Elements(doc: HtmlDocument) = HtmlDocument.elements doc
/// <summary>
/// Returns all of the root elements in the current document that match the set of names
/// </summary>
/// <param name="doc">The given document</param>
/// <param name="names">The set of names to match</param>
[<Extension>]
static member Elements(doc: HtmlDocument, names: seq<string>) = HtmlDocument.elementsNamed names doc
/// <summary>
/// Returns all of the root elements in the current document that match the name
/// </summary>
/// <param name="doc">The given document</param>
/// <param name="name">The name to match</param>
[<Extension>]
static member Elements(doc: HtmlDocument, name: string) = HtmlDocument.elementsNamed [ name ] doc
/// <summary>
/// Gets all of the descendants of this document that statisfy the given predicate
/// </summary>
/// <param name="doc">The given document</param>
/// <param name="predicate">The predicate by which to match the nodes to return</param>
/// <param name="recurseOnMatch">If a match is found continues down the tree matching child elements</param>
[<Extension>]
static member Descendants(doc: HtmlDocument, predicate, recurseOnMatch) =
HtmlDocument.descendants recurseOnMatch predicate doc
/// <summary>
/// Gets all of the descendants of this document that statisfy the given predicate
/// Recurses on match
/// </summary>
/// <param name="doc">The given document</param>
/// <param name="predicate">The predicate by which to match the nodes to return</param>
[<Extension>]
static member Descendants(doc: HtmlDocument, predicate) =
let recurseOnMatch = true
HtmlDocument.descendants recurseOnMatch predicate doc
/// Gets all of the descendants of this document
/// Recurses on match
[<Extension>]
static member Descendants(doc: HtmlDocument) =
let recurseOnMatch = true
let predicate = fun _ -> true
HtmlDocument.descendants recurseOnMatch predicate doc
/// <summary>
/// Finds all of the descendant nodes of this document that match the given set of names
/// </summary>
/// <param name="doc">The given document</param>
/// <param name="names">The set of names to match</param>
/// <param name="recurseOnMatch">If a match is found continues down the tree matching child elements</param>
[<Extension>]
static member Descendants(doc: HtmlDocument, names: seq<string>, recurseOnMatch) =
HtmlDocument.descendantsNamed recurseOnMatch names doc
/// <summary>
/// Finds all of the descendant nodes of this document that match the given set of names
/// Recurses on match
/// </summary>
/// <param name="doc">The given document</param>
/// <param name="names">The set of names to match</param>
[<Extension>]
static member Descendants(doc: HtmlDocument, names: seq<string>) =
let recurseOnMatch = true
HtmlDocument.descendantsNamed recurseOnMatch names doc
/// <summary>
/// Finds all of the descendant nodes of this document that match the given name
/// </summary>
/// <param name="doc">The given document</param>
/// <param name="name">The name to match</param>
/// <param name="recurseOnMatch">If a match is found continues down the tree matching child elements</param>
[<Extension>]
static member Descendants(doc: HtmlDocument, name: string, recurseOnMatch) =
HtmlDocument.descendantsNamed recurseOnMatch [ name ] doc
/// <summary>
/// Finds all of the descendant nodes of this document that match the given name
/// Recurses on match
/// </summary>
/// <param name="doc">The given document</param>
/// <param name="name">The name to match</param>
[<Extension>]
static member Descendants(doc: HtmlDocument, name: string) =
let recurseOnMatch = true
HtmlDocument.descendantsNamed recurseOnMatch [ name ] doc
/// <summary>
/// Gets all of the descendants of this document that statisfy the given predicate
/// </summary>
/// <param name="doc">The given document</param>
/// <param name="predicate">The predicate by which to match the nodes to return</param>
/// <param name="recurseOnMatch">If a match is found continues down the tree matching child elements</param>
[<Extension>]
static member DescendantsWithPath(doc: HtmlDocument, predicate, recurseOnMatch) =
HtmlDocument.descendantsWithPath recurseOnMatch predicate doc
/// <summary>
/// Gets all of the descendants of this document that statisfy the given predicate
/// Recurses on match
/// </summary>
/// <param name="doc">The given document</param>
/// <param name="predicate">The predicate by which to match the nodes to return</param>
[<Extension>]
static member DescendantsWithPath(doc: HtmlDocument, predicate) =
let recurseOnMatch = true
HtmlDocument.descendantsWithPath recurseOnMatch predicate doc
/// Gets all of the descendants of this document
/// Recurses on match
[<Extension>]
static member DescendantsWithPath(doc: HtmlDocument) =
let recurseOnMatch = true
let predicate = fun _ -> true
HtmlDocument.descendantsWithPath recurseOnMatch predicate doc
/// <summary>
/// Finds all of the descendant nodes of this document that match the given set of names
/// </summary>
/// <param name="doc">The given document</param>
/// <param name="names">The set of names to match</param>
/// <param name="recurseOnMatch">If a match is found continues down the tree matching child elements</param>
[<Extension>]
static member DescendantsWithPath(doc: HtmlDocument, names: seq<string>, recurseOnMatch) =
HtmlDocument.descendantsNamedWithPath recurseOnMatch names doc
/// <summary>
/// Finds all of the descendant nodes of this document that match the given set of names
/// Recurses on match
/// </summary>
/// <param name="doc">The given document</param>
/// <param name="names">The set of names to match</param>
[<Extension>]
static member DescendantsWithPath(doc: HtmlDocument, names: seq<string>) =
let recurseOnMatch = true
HtmlDocument.descendantsNamedWithPath recurseOnMatch names doc
/// <summary>
/// Finds all of the descendant nodes of this document that match the given name
/// </summary>
/// <param name="doc">The given document</param>
/// <param name="name">The name to match</param>
/// <param name="recurseOnMatch">If a match is found continues down the tree matching child elements</param>
[<Extension>]
static member DescendantsWithPath(doc: HtmlDocument, name: string, recurseOnMatch) =
HtmlDocument.descendantsNamedWithPath recurseOnMatch [ name ] doc
/// <summary>
/// Finds all of the descendant nodes of this document that match the given name
/// Recurses on match
/// </summary>
/// <param name="doc">The given document</param>
/// <param name="name">The name to match</param>
[<Extension>]
static member DescendantsWithPath(doc: HtmlDocument, name: string) =
let recurseOnMatch = true
HtmlDocument.descendantsNamedWithPath recurseOnMatch [ name ] doc
/// Finds the body element of the given document,
/// this throws an exception if no body element exists.
[<Extension>]
static member Body(doc: HtmlDocument) = HtmlDocument.body doc
/// Tries to find the body element of the given document.
[<Extension>]
static member TryGetBody(doc: HtmlDocument) = HtmlDocument.tryGetBody doc
/// Finds the html element of the given document,
/// this throws an exception if no html element exists.
[<Extension>]
static member Html(doc: HtmlDocument) = HtmlDocument.html doc
/// Tries to find the html element of the given document.
[<Extension>]
static member TryGetHtml(doc: HtmlDocument) = HtmlDocument.tryGetHtml doc
// --------------------------------------------------------------------------------------
[<CompilationRepresentation(CompilationRepresentationFlags.ModuleSuffix)>]
/// Provides the dynamic operator for getting attribute values from HTML elements
module HtmlExtensions =
/// Gets the value of an attribute from an HTML element
let (?) (node: HtmlNode) name = HtmlNode.attributeValue name node