Simplify PipelineData::print (#6119)

* Simplify PipelineData::print

Signed-off-by: nibon7 <nibon7@163.com>

* make write_all_and_flush to be associated function

Signed-off-by: nibon7 <nibon7@163.com>

crates/nu-protocol/src/pipeline_data.rs

@@ -467,29 +467,23 @@ impl PipelineData {
                     self,
                 )?;
 
-                for item in table {
+                table.write_all_and_flush(engine_state, config, no_newline, to_stderr)?;
-                    let mut out = if let Value::Error { error } = item {
-                        let working_set = StateWorkingSet::new(engine_state);
-
-                        format_error(&working_set, &error)
-                    } else if no_newline {
-                        item.into_string("", config)
-                    } else {
-                        item.into_string("\n", config)
-                    };
-
-                    if !no_newline {
-                        out.push('\n');
-                    }
-
-                    if !to_stderr {
-                        stdout_write_all_and_flush(out)?
-                    } else {
-                        stderr_write_all_and_flush(out)?
-                    }
-                }
             }
             None => {
+                self.write_all_and_flush(engine_state, config, no_newline, to_stderr)?;
+            }
+        };
+
+        Ok(())
+    }
+
+    fn write_all_and_flush(
+        self,
+        engine_state: &EngineState,
+        config: &Config,
+        no_newline: bool,
+        to_stderr: bool,
+    ) -> Result<(), ShellError> {
         for item in self {
             let mut out = if let Value::Error { error } = item {
                 let working_set = StateWorkingSet::new(engine_state);
@@ -511,8 +505,6 @@ impl PipelineData {
                 stderr_write_all_and_flush(out)?
             }
         }
-            }
-        };
 
         Ok(())
     }