Cleanup startup error exit paths

Make startup methods return Results so that the main binary can exit
cleanly instead of using std::process::exit from arbitrary positions,
which exits the process immediately and doesn't run destructors.

1 files changed, 0 insertions, 77 deletions

diff --git a/build.rs b/build.rs
deleted file mode 100644
index 6907b0d3..00000000
--- a/build.rs
+++ /dev/null
@@ -1,77 +0,0 @@
-/*
- * meli - bin.rs
- *
- * Copyright 2019 Manos Pitsidianakis
- *
- * This file is part of meli.
- *
- * meli is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * meli is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with meli. If not, see <http://www.gnu.org/licenses/>.
- */
-use std::fs::File;
-use std::io::prelude::*;
-use std::io::BufWriter;
-use std::path::PathBuf;
-use std::process::Command;
-
-fn main() -> Result<(), std::io::Error> {
-    if let Err(e) = std::fs::create_dir("src/manuals") {
-        if e.kind() != std::io::ErrorKind::AlreadyExists {
-            Err(e)?;
-        }
-    }
-    let mut build_flag = false;
-    let meli_1_metadata = std::fs::metadata("meli.1")?;
-    if let Ok(metadata) = std::fs::metadata("src/manuals/meli.txt") {
-        if metadata.modified()? < meli_1_metadata.modified()? {
-            build_flag = true;
-        }
-    } else {
-        /* Doesn't exist */
-        build_flag = true;
-    }
-
-    if build_flag {
-        let output = if let Ok(output) = Command::new("mandoc").args(&["meli.1"]).output() {
-            output.stdout
-        } else {
-            b"mandoc was not found on your system. It's required in order to compile the manual pages into plain text for use with the --*manual command line flags.".to_vec()
-        };
-        let man_path = PathBuf::from("src/manuals/meli.txt");
-        let file = File::create(&man_path)?;
-        BufWriter::new(file).write_all(&output)?;
-    }
-
-    let mut build_flag = false;
-    let meli_conf_5_metadata = std::fs::metadata("meli.conf.5")?;
-    if let Ok(metadata) = std::fs::metadata("src/manuals/meli_conf.txt") {
-        if metadata.modified()? < meli_conf_5_metadata.modified()? {
-            build_flag = true;
-        }
-    } else {
-        /* Doesn't exist */
-        build_flag = true;
-    }
-
-    if build_flag {
-        let output = if let Ok(output) = Command::new("mandoc").args(&["meli.conf.5"]).output() {
-            output.stdout
-        } else {
-            b"mandoc was not found on your system. It's required in order to compile the manual pages into plain text for use with the --*manual command line flags.".to_vec()
-        };
-        let man_path = PathBuf::from("src/manuals/meli_conf.txt");
-        let file = File::create(&man_path)?;
-        BufWriter::new(file).write_all(&output)?;
-    }
-    Ok(())
-}