main: Write YAML to standard output

Create an adapter from `std::fmt::Write` to `std::io::Write` based on
the following idea in the standard library:

https://github.com/rust-lang/rust/blob/master/library/std/src/io/mod.rs#L1634-L1652

Since `yaml_rust::YamlEmitter::new()` requires a `std::fmt::Write`,
adapt standard output so the emitter can write to it.

1 files changed, 4 insertions, 3 deletions

diff --git a/src/main.rs b/src/main.rs
index 7f372ea..2ac689c 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -94,9 +94,10 @@ fn main() {
                 ).unwrap(),
             };
 
-            let mut emitter = yaml_rust::YamlEmitter::new(
-                &mut std::io::stdout().lock(),
-            );
+            let stdout = std::io::stdout();
+            let mut stdout_handle = stdout.lock();
+            let mut buffer = yaqlite::yaml::IoAdapter::new(&mut stdout_handle);
+            let mut emitter = yaml_rust::YamlEmitter::new(&mut buffer);
             emitter.dump(&yaml_data).unwrap();
 
             dbconn.close().unwrap();