Add sysexits exit code

Doesn't capture input or I/O errors. Not bothering to return EX_NOINPUT
or EX_IOERR or EX_CANTCREAT because I don't want to bother creating an
error enum and variants for each case.

1 files changed, 4 insertions, 0 deletions

diff --git a/src/main.rs b/src/main.rs
index 492707f..957dbe6 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,8 +1,10 @@
 use anyhow::{self, Context};
+use exitcode;
 use getopts::Options;
 use lopdf::{Document, Object};
 
 use std::env;
+use std::process;
 
 
 fn main() {
@@ -10,6 +12,8 @@ fn main() {
         Ok(_) => (),
         Err(e) => {
             eprintln!("error: {}", e);
+
+            process::exit(exitcode::SOFTWARE);
         },
     };
 }