support inplace editing from stdin (#34)

Signed-off-by: suryapandian <[email protected]>

Author: suryapandian

Diff for: test/secret.yaml

@@ -0,0 +1,9 @@
+apiVersion: v1
+data:
+  color: aHR0cHM6Ly9zdXJ5YXBhbmRpYW4ud29yZHByZXNzLmNvbS8=
+kind: Secret
+metadata:
+  creationTimestamp: "2042-11-04T10:11:22Z"
+  name: test-secret
+  namespace:  test-namespace
+type: Opaque

Diff for: test/yq.test.bats

@@ -38,6 +38,12 @@
   rm test/output.json
 }
 
+@test "yq_in_place_edit" {
+  cat test/secret.yaml |  yq -i '.metadata.name="updated-name"' > test/output.yaml
+  cat test/output.yaml | yq '.metadata.name' | grep 'updated-name'
+  rm test/output.yaml
+}
+
 @test "exit_codes" {
   run yq -h
   [ "$status" -eq 0 ]

Diff for: yq.rs

@@ -65,7 +65,7 @@ struct Args {
     toml_output: bool,
 
     /// Edit the input file in place
-    #[arg(short, long, default_value = "false", requires = "file")]
+    #[arg(short, long, default_value = "false")]
     in_place: bool,
 
     /// Query to be sent to jq (see https://jqlang.github.io/jq/manual/)
@@ -292,7 +292,7 @@ fn main() -> Result<()> {
     let input = args.read_input()?;
     let stdout = args.shellout(input)?;
     let output = args.output(stdout)?;
-    if args.in_place {
+    if args.in_place && args.file.is_some() {
         let f = args.file.unwrap(); // required
         std::fs::write(f, output + "\n")?;
     } else {