Add example for mime crate

Cargo.toml

@@ -46,6 +46,7 @@ threadpool = "1.6"
 toml = "0.4"
 url = "1.6"
 walkdir = "2.0"
+mime = "0.3.5"
 
 [target.'cfg(target_os = "linux")'.dependencies]
 syslog = "3.3.0"

src/encoding.md

@@ -14,6 +14,7 @@
 | [Handle invalid CSV data with Serde][ex-invalid-csv] | [![csv-badge]][csv] [![serde-badge]][serde] | [![cat-encoding-badge]][cat-encoding] |
 | [Serialize records to CSV][ex-serialize-csv] | [![csv-badge]][csv] | [![cat-encoding-badge]][cat-encoding] |
 | [Serialize records to CSV using Serde][ex-csv-serde] | [![csv-badge]][csv] [![serde-badge]][serde] | [![cat-encoding-badge]][cat-encoding] |
+| [Get MIME type from filename][ex-mime-from-filename] | [![mime-badge]][mime] | [![cat-encoding-badge]][cat-encoding] |
 
 [ex-json-value]: #ex-json-value
 <a name="ex-json-value"></a>
@@ -688,6 +689,68 @@ fn run() -> Result<()> {
 # quick_main!(run);
 ```
 
+
+[ex-mime-from-filename]: #ex-mime-from-filename
+<a name="ex-mime-from-filename"></a>
+## 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.
+
+```rust
+# #[macro_use]
+# extern crate error_chain;
+#[macro_use]
+
+use std::io;
+#
+# error_chain! {
+#    foreign_links {
+#        IOError(std::io::Error);
+#    }
+# }
+
+extern crate mime;
+use mime::Mime;
+
+/// Return the MIME type according to file extension. Default is text/plain
+fn find_mimetype (filename : &String) -> Mime{
+
+    let parts : Vec<&str> = filename.split('.').collect();
+
+	 /// Filter on the file extension
+    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 run() -> Result<()> {
+    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);
+	 }
+
+
+    Ok(())
+}
+#
+# quick_main!(run);
+```
+
+
+
+
 {{#include links.md}}
 
 <!-- API Reference -->

src/intro.md

@@ -72,6 +72,7 @@ community. It needs and welcomes help. For details see
 | [Handle invalid CSV data with Serde][ex-invalid-csv] | [![csv-badge]][csv] [![serde-badge]][serde] | [![cat-encoding-badge]][cat-encoding] |
 | [Serialize records to CSV][ex-serialize-csv] | [![csv-badge]][csv] | [![cat-encoding-badge]][cat-encoding] |
 | [Serialize records to CSV using Serde][ex-csv-serde] | [![csv-badge]][csv] [![serde-badge]][serde] | [![cat-encoding-badge]][cat-encoding] |
+| [Get MIME type from filename][ex-mime-from-filename] | [![mime-badge]][mime] | [![cat-encoding-badge]][cat-encoding] |
 
 ## [Concurrency](concurrency.html)
 
@@ -176,6 +177,7 @@ community. It needs and welcomes help. For details see
 [ex-csv-filter]: encoding.html#ex-csv-filter
 [ex-csv-read]: encoding.html#ex-csv-read
 [ex-csv-serde]: encoding.html#ex-csv-serde
+[ex-mime-from-filename]: encoding.html#ex-mime-from-filename
 [ex-datetime-arithmetic]: basics.html#ex-datetime-arithmetic
 [ex-dedup-filenames]: app.html#ex-dedup-filenames
 [ex-error-chain-avoid-discarding]: basics.html#ex-error-chain-avoid-discarding

src/links.md

@@ -63,7 +63,9 @@ Keep lines sorted.
 [crossbeam-badge]: https://badge-cache.kominick.com/crates/v/crossbeam.svg?label=crossbeam
 [crossbeam]: https://docs.rs/crossbeam/
 [csv-badge]: https://badge-cache.kominick.com/crates/v/csv.svg?label=csv
+[mime-badge]: https://badge-cache.kominick.com/crates/v/csv.svg?label=mime
 [csv]: https://docs.rs/csv/
+[mime]: https://docs.rs/mime/
 [data-encoding-badge]: https://badge-cache.kominick.com/crates/v/data-encoding.svg?label=data-encoding
 [data-encoding]: https://docs.rs/data-encoding/
 [env_logger-badge]: https://badge-cache.kominick.com/crates/v/env_logger.svg?label=env_logger