Initial import of csv-1.1.5.
Bug: 155309706
Change-Id: Id08b46b0989d3b869c4a014d10ea98193b7c3b32
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);
+ }
+}