Add option: -c

src/bin/pq.rs

@@ -39,6 +39,10 @@ struct Opt {
     /// sort keys of objects on output. it on works when --to option is json, currently
     #[structopt(short = "S", long)]
     sort_keys: bool,
+
+    /// compact instead of pretty-printed output, only when outputting in JSON
+    #[structopt(short, long)]
+    compact: bool,
 }
 
 fn main() -> anyhow::Result<()> {
@@ -48,6 +52,7 @@ fn main() -> anyhow::Result<()> {
         from,
         to,
         sort_keys,
+        compact,
     } = Opt::from_args();
     let _ = {
         let input = if let Some(file) = file_or_stdin {
@@ -81,7 +86,7 @@ fn main() -> anyhow::Result<()> {
             lang.sort_keys();
         }
 
-        lang.print();
+        lang.print(compact);
     };
 
     Ok(())

src/lib/lang.rs

@@ -136,7 +136,7 @@ impl Lang {
         self.data = data;
     }
 
-    pub fn print(&self) -> anyhow::Result<()> {
+    pub fn print(&self, compact: bool) -> anyhow::Result<()> {
         let output = match (&self.to, &self.from == &self.to) {
             (LangType::Csv, _) => {
                 // To pad missing values with null, serialize them to json, deserialize them with polars, and write them to csv from there.
@@ -159,6 +159,7 @@ impl Lang {
                 let s = String::from_utf8(v)?;
                 s
             }
+            (LangType::Json, _) if compact => serde_json::to_string(&self.data).unwrap(),
             (LangType::Json, _) => serde_json::to_string_pretty(&self.data).unwrap(),
             (_, true) => self.text.to_owned(),
             (LangType::Toml, _) => {

tests-make/convert.toml

@@ -19,6 +19,15 @@ tobe = '''
 }
 '''
 
+[tests.to-json-compact]
+script = '''
+echo $INPUT | ./target/debug/pq -t json -c
+'''
+tobe = '''
+{"name":"Mew","id":151,"fleeRate":0.1}
+'''
+
+
 [tests.to-toml]
 script = '''
 echo $INPUT | ./target/debug/pq -t toml