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50 lines
1.6 KiB
Markdown
50 lines
1.6 KiB
Markdown
---
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title: base64
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description: "`base64Encode` and `base64Decode` let you easily decode content with a base64 encoding and vice versa through pipes."
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date: 2017-02-01
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publishdate: 2017-02-01
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lastmod: 2017-02-01
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categories: [functions]
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menu:
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docs:
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parent: "functions"
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keywords: []
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relatedfuncs: []
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signature: ["base64Decode INPUT", "base64Encode INPUT"]
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workson: []
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hugoversion:
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deprecated: false
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draft: false
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aliases: []
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---
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An example:
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{{< code file="base64-input.html" >}}
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<p>Hello world = {{ "Hello world" | base64Encode }}</p>
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<p>SGVsbG8gd29ybGQ = {{ "SGVsbG8gd29ybGQ=" | base64Decode }}</p>
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{{< /code >}}
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{{< output file="base-64-output.html" >}}
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<p>Hello world = SGVsbG8gd29ybGQ=</p>
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<p>SGVsbG8gd29ybGQ = Hello world</p>
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{{< /output >}}
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You can also pass other data types as arguments to the template function which tries to convert them. The following will convert *42* from an integer to a string because both `base64Encode` and `base64Decode` always return a string.
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```
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{{ 42 | base64Encode | base64Decode }}
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=> "42" rather than 42
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```
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## `base64` with APIs
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Using base64 to decode and encode becomes really powerful if we have to handle
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responses from APIs.
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```
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{{ $resp := getJSON "https://api.github.com/repos/gohugoio/hugo/readme" }}
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{{ $resp.content | base64Decode | markdownify }}
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```
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The response of the GitHub API contains the base64-encoded version of the [README.md](https://github.com/gohugoio/hugo/blob/master/README.md) in the Hugo repository. Now we can decode it and parse the Markdown. The final output will look similar to the rendered version on GitHub.
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