From 3fed23aae4dcfc3274b47e66f6d2a4c5d901cae9 Mon Sep 17 00:00:00 2001
From: Jere Suikkila <jeresuikkila@users.noreply.github.com>
Date: Fri, 14 Jul 2023 13:02:37 -0400
Subject: [PATCH] Added convenience wrappers for stringifying geojson (#217)

---
 CHANGES.md                    |  2 ++
 examples/geojson_to_string.rs | 18 ++++++++++++++++++
 src/geojson.rs                | 14 ++++++++++++++
 3 files changed, 34 insertions(+)
 create mode 100644 examples/geojson_to_string.rs

diff --git a/CHANGES.md b/CHANGES.md
index d1e906d..0cd7229 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -9,6 +9,8 @@
 * Modified conversion from JSON to reject zero- and one-dimensional positions.
   * PR: <https://github.com/georust/geojson/pull/225>
 
+* Added `geojson::{to_string, to_string_pretty}` as convenience wrappers around the same `serde_json` methods.
+
 ## 0.24.0
 
 * Added `geojson::{ser, de}` helpers to convert your custom struct to and from GeoJSON. 
diff --git a/examples/geojson_to_string.rs b/examples/geojson_to_string.rs
new file mode 100644
index 0000000..350d4f5
--- /dev/null
+++ b/examples/geojson_to_string.rs
@@ -0,0 +1,18 @@
+use std::error::Error;
+use std::fs::File;
+use std::io::BufReader;
+
+use geojson::{Feature, GeoJson};
+
+fn main() -> Result<(), Box<dyn Error>> {
+    let file_reader = BufReader::new(File::open("tests/fixtures/canonical/good-feature.geojson")?);
+
+    let feature: Feature = serde_json::from_reader(file_reader)?;
+    
+    let geojson: GeoJson = feature.into();
+
+    println!("{}", &geojson.clone().to_string()?);
+    println!("{}", &geojson.to_string_pretty()?);
+
+    Ok(())
+}
diff --git a/src/geojson.rs b/src/geojson.rs
index 862e571..e06c509 100644
--- a/src/geojson.rs
+++ b/src/geojson.rs
@@ -233,6 +233,20 @@ impl GeoJson {
     {
         serde_json::from_reader(rdr)
     }
+
+    /// Convenience wrapper for [serde_json::to_string()]
+    pub fn to_string(self) -> Result<String> {
+        ::serde_json::to_string(&self)
+            .map_err(|err| Error::MalformedJson(err))
+            .and_then(|s| Ok(s.to_string()))
+    }
+
+    /// Convenience wrapper for [serde_json::to_string_pretty()]
+    pub fn to_string_pretty(self) -> Result<String> {
+        ::serde_json::to_string_pretty(&self)
+            .map_err(|err| Error::MalformedJson(err))
+            .and_then(|s| Ok(s.to_string()))
+    }
 }
 
 impl TryFrom<JsonObject> for GeoJson {