bam/examples/reheader: Add self program record

noodles-bam/examples/bam_reheader.rs

@@ -7,13 +7,30 @@
 use std::{env, io};
 
 use noodles_bam as bam;
+use noodles_sam::header::record::value::{
+    map::{builder::BuildError, program::tag, Program},
+    Map,
+};
+
+fn build_self_program() -> Result<Map<Program>, BuildError> {
+    let args = env::args().collect::<Vec<_>>().join(" ");
+
+    Map::builder()
+        .insert(tag::NAME, env!("CARGO_BIN_NAME"))
+        .insert(tag::VERSION, env!("CARGO_PKG_VERSION"))
+        .insert(tag::COMMAND_LINE, args)
+        .build()
+}
 
-fn main() -> io::Result<()> {
+fn main() -> Result<(), Box<dyn std::error::Error>> {
     let src = env::args().nth(1).expect("missing src");
 
     let mut reader = bam::io::reader::Builder.build_from_path(src)?;
-
     let mut header = reader.read_header()?;
+
+    let pg = build_self_program()?;
+    header.programs_mut().add("noodles", pg)?;
+
     header.add_comment("a comment added by noodles-bam");
 
     let stdout = io::stdout().lock();