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68 lines
3.1 KiB
68 lines
3.1 KiB
defmodule AutoLinker do
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@moduledoc """
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Create url links from text containing urls.
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Turns an input string like `"Check out google.com"` into
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`Check out "<a href=\"http://google.com\" target=\"_blank\" rel=\"noopener noreferrer\">google.com</a>"`
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## Examples
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iex> AutoLinker.link("google.com")
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~s(<a href="http://google.com" class="auto-linker" target="_blank" rel="noopener noreferrer">google.com</a>)
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iex> AutoLinker.link("google.com", new_window: false, rel: false)
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~s(<a href="http://google.com" class="auto-linker">google.com</a>)
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iex> AutoLinker.link("google.com", new_window: false, rel: false, class: false)
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~s(<a href="http://google.com">google.com</a>)
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iex> AutoLinker.link("[Google](http://google.com)", markdown: true, new_window: false, rel: false, class: false)
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~s(<a href='http://google.com'>Google</a>)
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iex> AutoLinker.link("[Google Search](http://google.com)", markdown: true)
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~s(<a href='http://google.com' class="auto-linker" target="_blank" rel="noopener noreferrer">Google Search</a>)
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"""
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import AutoLinker.Parser
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@doc """
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Auto link a string.
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Options:
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* `class: "auto-linker"` - specify the class to be added to the generated link. false to clear
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* `rel: "noopener noreferrer"` - override the rel attribute. false to clear
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* `new_window: true` - set to false to remove `target='_blank'` attribute
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* `scheme: false` - Set to true to link urls with schema `http://google`
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* `truncate: false` - Set to a number to truncate urls longer then the number. Truncated urls will end in `..`
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* `strip_prefix: true` - Strip the scheme prefix
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* `exclude_class: false` - Set to a class name when you don't want urls auto linked in the html of the give class
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* `exclude_id: false` - Set to an element id when you don't want urls auto linked in the html of the give element
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* `exclude_patterns: ["```"]` - Don't link anything between the the pattern
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* `markdown: false` - link markdown style links
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* `email: false` - link email links
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* `mention: false` - link @mentions (when `true`, requires `mention_prefix` or `mention_handler` options to be set)
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* `mention_prefix: nil` - a prefix to build a link for a mention (example: `https://example.com/user/`)
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* `mention_handler: nil` - a custom handler to validate and formart a mention
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* `hashtag: false` - link #hashtags (when `true`, requires `hashtag_prefix` or `hashtag_handler` options to be set)
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* `hashtag_prefix: nil` - a prefix to build a link for a hashtag (example: `https://example.com/tag/`)
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* `hashtag_handler: nil` - a custom handler to validate and formart a hashtag
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* `extra: false` - link urls with rarely used schemes (magnet, ipfs, irc, etc.)
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Each of the above options can be specified when calling `link(text, opts)`
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or can be set in the `:auto_linker`'s configuration. For example:
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config :auto_linker,
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class: false,
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new_window: false
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Note that passing opts to `link/2` will override the configuration settings.
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"""
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def link(text, opts \\ []) do
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parse(text, opts)
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end
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def link_map(text, acc, opts \\ []) do
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parse({text, acc}, opts)
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end
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end
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