1 files changed, 40 insertions, 0 deletions
diff --git a/examples/tutorial-pipeline-search-01.rs b/examples/tutorial-pipeline-search-01.rs
new file mode 100644
index 0000000..3bfb8ea
--- /dev/null
+++ b/examples/tutorial-pipeline-search-01.rs
@@ -0,0 +1,40 @@
+use std::env;
+use std::error::Error;
+use std::io;
+use std::process;
+
+fn run() -> Result<(), Box<dyn Error>> {
+    // Get the query from the positional arguments.
+    // If one doesn't exist, return an error.
+    let query = match env::args().nth(1) {
+        None => return Err(From::from("expected 1 argument, but got none")),
+        Some(query) => query,
+    };
+
+    // Build CSV readers and writers to stdin and stdout, respectively.
+    let mut rdr = csv::Reader::from_reader(io::stdin());
+    let mut wtr = csv::Writer::from_writer(io::stdout());
+
+    // Before reading our data records, we should write the header record.
+    wtr.write_record(rdr.headers()?)?;
+
+    // Iterate over all the records in `rdr`, and write only records containing
+    // `query` to `wtr`.
+    for result in rdr.records() {
+        let record = result?;
+        if record.iter().any(|field| field == &query) {
+            wtr.write_record(&record)?;
+        }
+    }
+
+    // CSV writers use an internal buffer, so we should always flush when done.
+    wtr.flush()?;
+    Ok(())
+}
+
+fn main() {
+    if let Err(err) = run() {
+        println!("{}", err);
+        process::exit(1);
+    }
+}