Mime type from filename

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Julien Delange 2018-07-12 15:18:19 -07:00 committed by Andy Gauge
commit 4b1ed71d95
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[ex-toml-config]: encoding/complex.html#deserialize-a-toml-configuration-file [ex-toml-config]: encoding/complex.html#deserialize-a-toml-configuration-file
[ex-byteorder-le]: encoding/complex.html#read-and-write-integers-in-little-endian-byte-order [ex-byteorder-le]: encoding/complex.html#read-and-write-integers-in-little-endian-byte-order
{{#include links.md}} {{#include links.md}}

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| Recipe | Crates | Categories | | Recipe | Crates | Categories |
|--------|--------|------------| |--------|--------|------------|
| [Get MIME type from string][ex-mime-from-string] | [![mime-badge]][mime] | [![cat-encoding-badge]][cat-encoding] | | [Get MIME type from string][ex-mime-from-string] | [![mime-badge]][mime] | [![cat-encoding-badge]][cat-encoding] |
| [Get MIME type from filename][ex-mime-from-filename] | [![mime-badge]][mime] | [![cat-encoding-badge]][cat-encoding] |
| [Parse the MIME type of a HTTP response][ex-http-response-mime-type] | [![mime-badge]][mime] [![reqwest-badge]][reqwest] | [![cat-net-badge]][cat-net] [![cat-encoding-badge]][cat-encoding] | | [Parse the MIME type of a HTTP response][ex-http-response-mime-type] | [![mime-badge]][mime] [![reqwest-badge]][reqwest] | [![cat-net-badge]][cat-net] [![cat-encoding-badge]][cat-encoding] |
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[ex-url-rm-frag]: web/url.html#remove-fragment-identifiers-and-query-pairs-from-a-url [ex-url-rm-frag]: web/url.html#remove-fragment-identifiers-and-query-pairs-from-a-url
[ex-mime-from-string]: web/mime.html#get-mime-type-from-string [ex-mime-from-string]: web/mime.html#get-mime-type-from-string
[ex-mime-from-filename]: web/mime.html#get-mime-type-from-filename
[ex-http-response-mime-type]: web/mime.html#parse-the-mime-type-of-a-http-response [ex-http-response-mime-type]: web/mime.html#parse-the-mime-type-of-a-http-response
{{#include links.md}} {{#include links.md}}

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{{#include mime/string.md}} {{#include mime/string.md}}
{{#include mime/filename.md}}
{{#include mime/request.md}} {{#include mime/request.md}}
{{#include ../links.md}} {{#include ../links.md}}

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## Get MIME type from filename
[![mime-badge]][mime] [![cat-encoding-badge]][cat-encoding]
The following example shows how to return the correct MIME type from a given
filename using the [mime] crate. The program will check for file extensions
and match against a known list. The return value is [`mime:Mime`].
```rust
extern crate mime;
use mime::Mime;
fn find_mimetype (filename : &String) -> Mime{
let parts : Vec<&str> = filename.split('.').collect();
let res = match parts.last() {
Some(v) =>
match *v {
"png" => mime::IMAGE_PNG,
"jpg" => mime::IMAGE_JPEG,
"json" => mime::APPLICATION_JSON,
&_ => mime::TEXT_PLAIN,
},
None => mime::TEXT_PLAIN,
};
return res;
}
fn main() {
let filenames = vec!("foobar.jpg", "foo.bar", "foobar.png");
for file in filenames {
let mime = find_mimetype(&file.to_owned());
println!("MIME for {}: {}", file, mime);
}
}
```
[`mime:Mime`]: https://docs.rs/mime/*/mime/struct.Mime.html