From 192b3b588553bf461777068e1ae4157ed88b238a Mon Sep 17 00:00:00 2001
From: Matthias Beyer <mail@beyermatthias.de>
Date: Sat, 5 Mar 2016 12:30:40 +0100
Subject: [PATCH] Switch to TOML as configuration language behind the scenes

---
 libimagrt/Cargo.toml           |  2 +-
 libimagrt/src/configuration.rs | 57 +++++++++++++++++++++++++++-------
 libimagrt/src/lib.rs           |  2 +-
 3 files changed, 47 insertions(+), 14 deletions(-)

diff --git a/libimagrt/Cargo.toml b/libimagrt/Cargo.toml
index 276295fb..655546b9 100644
--- a/libimagrt/Cargo.toml
+++ b/libimagrt/Cargo.toml
@@ -5,7 +5,7 @@ authors = ["Matthias Beyer <mail@beyermatthias.de>"]
 
 [dependencies]
 clap = "2.1.1"
-config = "0.1.3"
+toml = "0.1.27"
 log = "0.3.4"
 xdg-basedir = "0.2.2"
 itertools = "0.4.6"
diff --git a/libimagrt/src/configuration.rs b/libimagrt/src/configuration.rs
index 79ff6ee5..e46da970 100644
--- a/libimagrt/src/configuration.rs
+++ b/libimagrt/src/configuration.rs
@@ -2,8 +2,7 @@ use std::default::Default;
 use std::path::PathBuf;
 use std::result::Result as RResult;
 
-pub use config::types::Config;
-pub use config::reader::from_file;
+use toml::{Parser, Value};
 
 /**
  * Errors which are related to configuration-file loading
@@ -133,9 +132,9 @@ impl Configuration {
      */
     pub fn new(rtp: &PathBuf) -> Result<Configuration> {
         fetch_config(&rtp).map(|cfg| {
-            let verbosity   = cfg.lookup_boolean("verbosity").unwrap_or(false);
-            let editor      = cfg.lookup_str("editor").map(String::from);
-            let editor_opts = String::from(cfg.lookup_str("editor-opts").unwrap_or(""));
+            let verbosity   = get_verbosity(&cfg);
+            let editor      = get_editor(&cfg);
+            let editor_opts = get_editor_opts(&cfg);
 
             debug!("Building configuration");
             debug!("  - verbosity  : {:?}", verbosity);
@@ -152,13 +151,41 @@ impl Configuration {
 
 }
 
+fn get_verbosity(v: &Value) -> bool {
+    match v {
+        &Value::Table(ref t) => t.get("verbose")
+                .map(|v| match v { &Value::Boolean(b) => b, _ => false, })
+                .unwrap_or(false),
+        _ => false,
+    }
+}
+
+fn get_editor(v: &Value) -> Option<String> {
+    match v {
+        &Value::Table(ref t) => t.get("editor")
+                .and_then(|v| match v { &Value::String(ref s) => Some(s.clone()), _ => None, }),
+        _ => None,
+    }
+}
+
+fn get_editor_opts(v: &Value) -> String {
+    match v {
+        &Value::Table(ref t) => t.get("editor-opts")
+                .and_then(|v| match v { &Value::String(ref s) => Some(s.clone()), _ => None, })
+                .unwrap_or(String::new()),
+        _ => String::new(),
+    }
+}
+
 /**
  * Helper to fetch the config file
  *
  * Tests several variants for the config file path and uses the first one which works.
  */
-fn fetch_config(rtp: &PathBuf) -> Result<Config> {
+fn fetch_config(rtp: &PathBuf) -> Result<Value> {
     use std::env;
+    use std::fs::File;
+    use std::io::Read;
 
     use xdg_basedir;
     use itertools::Itertools;
@@ -184,14 +211,20 @@ fn fetch_config(rtp: &PathBuf) -> Result<Config> {
         .flatten()
         .filter(|path| path.exists())
         .map(|path| {
-            from_file(&path)
-                    .map_err(|e| {
-                        ConfigError::new(ConfigErrorKind::ConfigParsingFailed, Some(Box::new(e)))
-                    })
+            let content = {
+                let mut s = String::new();
+                let mut f = File::open(path);
+                if f.is_err() {
+                }
+                let mut f = f.unwrap();
+                f.read_to_string(&mut s);
+                s
+            };
+            Parser::new(&content[..]).parse()
         })
-        .filter(|loaded| loaded.is_ok())
+        .filter(|loaded| loaded.is_some())
         .nth(0)
-        .map(|inner| inner.unwrap())
+        .map(|inner| Value::Table(inner.unwrap()))
         .ok_or(ConfigError::new(ConfigErrorKind::NoConfigFileFound, None))
 }
 
diff --git a/libimagrt/src/lib.rs b/libimagrt/src/lib.rs
index 9e81f088..4db24dc5 100644
--- a/libimagrt/src/lib.rs
+++ b/libimagrt/src/lib.rs
@@ -3,7 +3,7 @@
 #[cfg(unix)] extern crate xdg_basedir;
 
 extern crate clap;
-extern crate config;
+extern crate toml;
 
 extern crate libimagstore;
 extern crate libimagutil;