View Source Premailex.Util (Premailex v0.3.17)
Module that contains utility functions.
Link to this section Summary
Functions
Traverses tree searching for needle, and will call provided function on any occurances.
Traverse all trees in array searching for needle, and will call function with element and number times needle has been found so far.
Traverses tree until first match for needle.
Link to this section Types
@type html_tree() :: Premailex.HTMLParser.html_tree()
Link to this section Functions
Traverses tree searching for needle, and will call provided function on any occurances.
If the function returns {:halt, any}
, traverse will stop, and result will
be {:halt, html_tree}
.
examples
Examples
iex> Premailex.Util.traverse({"div", [], [{"p", [], ["First paragraph"]}, {"p", [], ["Second paragraph"]}]}, "p", fn {name, attrs, _children} -> {name, attrs, ["Updated"]} end)
{"div", [], [{"p", [], ["Updated"]}, {"p", [], ["Updated"]}]}
iex> Premailex.Util.traverse({"div", [], [{"p", [], ["First paragraph"]}, {"p", [], ["Second paragraph"]}]}, {"p", [], ["Second paragraph"]}, fn {name, attrs, _children} -> {name, attrs, ["Updated"]} end)
{"div", [], [{"p", [], ["First paragraph"]}, {"p", [], ["Updated"]}]}
iex> Premailex.Util.traverse({"div", [], [{:comment, "This is a comment"}, {"p", [], ["Paragraph"]}]}, :comment, fn {:comment, _comment} -> {:comment, "Updated"} end)
{"div", [], [{:comment, "Updated"}, {"p", [], ["Paragraph"]}]}
Traverse all trees in array searching for needle, and will call function with element and number times needle has been found so far.
examples
Examples
iex> Premailex.Util.traverse_reduce([{"p", [], ["First paragraph"]}, {"p", [], ["Second paragraph"]}], "p", fn({name, attrs, _children}, acc) -> {name, attrs, ["Updated " <> to_string(acc)]} end)
{[{"p", [], ["Updated 0"]}, {"p", [], ["Updated 1"]}], 2}
Traverses tree until first match for needle.
examples
Examples
iex> Premailex.Util.traverse_until_first({"div", [], [{"p", [], ["First paragraph"]}, {"p", [], ["Second paragraph"]}]}, "p", fn {name, attrs, _children} -> {name, attrs, ["Updated"]} end)
{"div", [], [{"p", [], ["Updated"]}, {"p", [], ["Second paragraph"]}]}