fix(stdlib): Add missing functions from 0.28 release (#1553)

* fix(stdlib): Add missing functions from 0.28 release

Missing functions: `split_path`, `basename`, `dirname`

* Add changelog

* Fix changelog file

* Fix split_path tests

Author: thomasqueirozb

changelog.d/1553.fix.md

@@ -0,0 +1,4 @@
+Fixed an issue where `split_path`, `basename`, `dirname` had not been added to VRL's standard
+library and, therefore, appeared to be missing and were inaccessible in the `0.28` release.
+
+authors: thomasqueirozb

src/stdlib/mod.rs

@@ -423,6 +423,7 @@ pub fn all() -> Vec<Box<dyn Function>> {
         Box::new(Array),
         Box::new(Assert),
         Box::new(AssertEq),
+        Box::new(BaseName),
         Box::new(Boolean),
         Box::new(Camelcase),
         Box::new(Ceil),
@@ -436,15 +437,16 @@ pub fn all() -> Vec<Box<dyn Function>> {
         Box::new(DecodeCharset),
         Box::new(DecodeGzip),
         Box::new(DecodeLz4),
+        Box::new(DecodeMimeQ),
         Box::new(DecodePercent),
         Box::new(DecodePunycode),
-        Box::new(DecodeMimeQ),
         Box::new(DecodeSnappy),
         Box::new(DecodeZlib),
         Box::new(DecodeZstd),
         Box::new(Decrypt),
         Box::new(DecryptIp),
         Box::new(Del),
+        Box::new(DirName),
         Box::new(DnsLookup),
         Box::new(Downcase),
         Box::new(EncodeBase16),
@@ -581,6 +583,7 @@ pub fn all() -> Vec<Box<dyn Function>> {
         Box::new(Snakecase),
         Box::new(Slice),
         Box::new(Split),
+        Box::new(SplitPath),
         Box::new(StartsWith),
         Box::new(String),
         Box::new(StripAnsiEscapeCodes),

src/stdlib/split_path.rs

@@ -42,22 +42,22 @@ impl Function for SplitPath {
         &[
             Example {
                 title: "Split path with trailing slash",
-                source: r#"split_path!("/home/user/")"#,
+                source: r#"split_path("/home/user/")"#,
                 result: Ok(r#"["/", "home", "user"]"#),
             },
             Example {
                 title: "Split path from file path",
-                source: r#"split_path!("/home/user")"#,
+                source: r#"split_path("/home/user")"#,
                 result: Ok(r#"["/", "home", "user"]"#),
             },
             Example {
                 title: "Split path from root",
-                source: r#"split_path!("/")"#,
+                source: r#"split_path("/")"#,
                 result: Ok(r#"["/"]"#),
             },
             Example {
                 title: "Empty path returns empty array",
-                source: r#"split_path!("")"#,
+                source: r#"split_path("")"#,
                 result: Ok("[]"),
             },
         ]