Add new `Runtime` constructor

that accepts a Configuration argument;
removed `GetConfiguration` trait and all the previous changes
needed for it

4 files changed, 163 insertions, 189 deletions

diff --git a/imag-link/src/main.rs b/imag-link/src/main.rs
index f254488b..18354bb0 100644
--- a/imag-link/src/main.rs
+++ b/imag-link/src/main.rs
@@ -350,14 +350,11 @@ mod tests {
     use libimagrt::spec::CliSpec;
     use libimagrt::runtime::Runtime;
     use libimagrt::error::RuntimeError;
-    use libimagrt::configuration::{Configuration, GetConfiguration, InternalConfiguration,
-                                   Result as ConfigResult, ConfigErrorKind};
-    use libimagrt::configuration::error::MapErrInto;
+    use libimagrt::configuration::{Configuration, InternalConfiguration};
 
     use libimagstore::storeid::StoreId;
     use libimagstore::store::{Result as StoreResult, FileLockEntry};
 
-    static TOML_CONFIG_FILE: &[u8] = include_bytes!("../test_config.toml");
     static DEFAULT_ENTRY: &str = "\
 ---\
 [imag]\
@@ -392,20 +389,18 @@ version = \"0.3.0\"\
         }
     }
 
-    impl<'a> GetConfiguration for MockLinkApp<'a> {
-        fn get_configuration(&self, _: &PathBuf) -> ConfigResult<Configuration> {
-            ::toml::de::from_slice(TOML_CONFIG_FILE)
-                .map_err_into(ConfigErrorKind::TOMLParserError)
-                .map(Configuration::new)
-        }
-    }
-
     impl<'a> InternalConfiguration for MockLinkApp<'a> {
         fn enable_logging(&self) -> bool {
             false
         }
     }
 
+    fn generate_test_config() -> Option<Configuration> {
+        ::toml::de::from_str("[store]\nimplicit-create=true")
+                    .map(Configuration::with_value)
+                    .ok()
+    }
+
     fn generate_test_runtime<'a>(mut args: Vec<&'static str>) -> Result<Runtime<'a>, RuntimeError> {
         let mut cli_args = vec!["imag-link",
                                 "--no-color",
@@ -417,7 +412,7 @@ version = \"0.3.0\"\
         cli_args.append(&mut args);
 
         let cli_app = MockLinkApp::new(cli_args);
-        Runtime::new(cli_app)
+        Runtime::with_configuration(cli_app, generate_test_config())
     }
 
     fn create_test_entry<'a, S: AsRef<OsStr>>(rt: &'a Runtime, name: S) -> StoreResult<StoreId> {
diff --git a/imag-link/test_config.toml b/imag-link/test_config.toml
deleted file mode 100644
index 3041de6f..00000000
--- a/imag-link/test_config.toml
+++ /dev/null
@@ -1,43 +0,0 @@
-[store]
-implicit-create = true
-store-unload-hook-aspects  = []
-pre-create-hook-aspects    = []
-post-create-hook-aspects   = []
-pre-move-hook-aspects      = []
-post-move-hook-aspects     = []
-pre-retrieve-hook-aspects  = []
-post-retrieve-hook-aspects = []
-pre-update-hook-aspects    = []
-post-update-hook-aspects   = []
-pre-delete-hook-aspects    = []
-post-delete-hook-aspects   = []
-
-[store.aspects.debug]
-parallel = false
-
-[store.aspects.vcs]
-parallel = false
-
-[store.hooks.stdhook_debug]
-aspect = "vcs"
-
-[store.hooks.stdhook_git_update]
-aspect = "vcs"
-enabled = false
-
-[store.hooks.stdhook_git_update.commit]
-enabled = false
-
-[store.hooks.stdhook_git_delete]
-aspect = "vcs"
-enabled = false
-
-[store.hooks.stdhook_git_delete.commit]
-enabled = false
-
-[store.hooks.stdhook_git_storeunload]
-aspect = "vcs"
-enabled = false
-
-[store.hooks.stdhook_git_storeunload.commit]
-enabled = false
diff --git a/libimagrt/src/configuration.rs b/libimagrt/src/configuration.rs
index 78902c41..15e54356 100644
--- a/libimagrt/src/configuration.rs
+++ b/libimagrt/src/configuration.rs
@@ -73,21 +73,33 @@ impl Configuration {
     /// with all variants.
     ///
     /// If that doesn't work either, an error is returned.
-    pub fn new(toml_config: Value) -> Configuration {
-        let verbosity   = get_verbosity(&toml_config);
-        let editor      = get_editor(&toml_config);
-        let editor_opts = get_editor_opts(&toml_config);
-
-        debug!("Building configuration");
-        debug!("  - verbosity  : {:?}", verbosity);
-        debug!("  - editor     : {:?}", editor);
-        debug!("  - editor-opts: {}", editor_opts);
-
-        Configuration {
-            config: toml_config,
-            verbosity: verbosity,
-            editor: editor,
-            editor_opts: editor_opts,
+    pub fn new(rtp: &PathBuf) -> Result<Configuration> {
+        fetch_config(&rtp).map(|cfg| {
+            let verbosity   = get_verbosity(&cfg);
+            let editor      = get_editor(&cfg);
+            let editor_opts = get_editor_opts(&cfg);
+
+            debug!("Building configuration");
+            debug!("  - verbosity  : {:?}", verbosity);
+            debug!("  - editor     : {:?}", editor);
+            debug!("  - editor-opts: {}", editor_opts);
+
+            Configuration {
+                config: cfg,
+                verbosity: verbosity,
+                editor: editor,
+                editor_opts: editor_opts,
+            }
+        })
+    }
+
+    /// Get a new configuration object built from the given toml value.
+    pub fn with_value(value: Value) -> Configuration {
+        Configuration{
+            verbosity: get_verbosity(&value),
+            editor: get_editor(&value),
+            editor_opts: get_editor_opts(&value),
+            config: value,
         }
     }
 
@@ -211,74 +223,68 @@ fn get_editor_opts(v: &Value) -> String {
     }
 }
 
-pub trait GetConfiguration {
-    /// Helper to fetch the config file
-    ///
-    /// Default implementation tests several variants for the config file path and uses the first
-    /// one which works.
-    fn get_configuration(&self, rtp: &PathBuf) -> Result<Configuration> {
-        use std::env;
-        use std::fs::File;
-        use std::io::Read;
-        use std::io::Write;
-        use std::io::stderr;
-
-        use xdg_basedir;
-        use itertools::Itertools;
-
-        use libimagutil::variants::generate_variants as gen_vars;
-        use libimagerror::trace::trace_error;
-
-        let variants = vec!["config", "config.toml", "imagrc", "imagrc.toml"];
-        let modifier = |base: &PathBuf, v: &'static str| {
-            let mut base = base.clone();
-            base.push(String::from(v));
-            base
-        };
-
-        vec![
-            vec![rtp.clone()],
-            gen_vars(rtp.clone(), variants.clone(), &modifier),
-
-            env::var("HOME").map(|home| gen_vars(PathBuf::from(home), variants.clone(), &modifier))
-                            .unwrap_or(vec![]),
-
-            xdg_basedir::get_data_home().map(|data_dir| gen_vars(data_dir, variants.clone(), &modifier))
-                                        .unwrap_or(vec![]),
-        ].iter()
-            .flatten()
-            .filter(|path| path.exists() && path.is_file())
-            .map(|path| {
-                let content = {
-                    let mut s = String::new();
-                    let f = File::open(path);
-                    if f.is_err() {
-                        return None
-                    }
-                    let mut f = f.unwrap();
-                    f.read_to_string(&mut s).ok();
-                    s
-                };
-
-                match ::toml::de::from_str(&content[..]) {
-                    Ok(res) => res,
-                    Err(e) => {
-                        write!(stderr(), "Config file parser error:").ok();
-                        trace_error(&e);
-                        None
-                    }
+/// 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<Value> {
+    use std::env;
+    use std::fs::File;
+    use std::io::Read;
+    use std::io::Write;
+    use std::io::stderr;
+
+    use xdg_basedir;
+    use itertools::Itertools;
+
+    use libimagutil::variants::generate_variants as gen_vars;
+    use libimagerror::trace::trace_error;
+
+    let variants = vec!["config", "config.toml", "imagrc", "imagrc.toml"];
+    let modifier = |base: &PathBuf, v: &'static str| {
+        let mut base = base.clone();
+        base.push(String::from(v));
+        base
+    };
+
+    vec![
+        vec![rtp.clone()],
+        gen_vars(rtp.clone(), variants.clone(), &modifier),
+
+        env::var("HOME").map(|home| gen_vars(PathBuf::from(home), variants.clone(), &modifier))
+                        .unwrap_or(vec![]),
+
+        xdg_basedir::get_data_home().map(|data_dir| gen_vars(data_dir, variants.clone(), &modifier))
+                                    .unwrap_or(vec![]),
+    ].iter()
+        .flatten()
+        .filter(|path| path.exists() && path.is_file())
+        .map(|path| {
+            let content = {
+                let mut s = String::new();
+                let f = File::open(path);
+                if f.is_err() {
+                    return None
                 }
-            })
-            .filter(|loaded| loaded.is_some())
-            .nth(0)
-            .map(|inner| Value::Table(inner.unwrap()))
-            .ok_or(ConfigErrorKind::NoConfigFileFound.into())
-            .map(Configuration::new)
-    }
+                let mut f = f.unwrap();
+                f.read_to_string(&mut s).ok();
+                s
+            };
+
+            match ::toml::de::from_str(&content[..]) {
+                Ok(res) => res,
+                Err(e) => {
+                    write!(stderr(), "Config file parser error:").ok();
+                    trace_error(&e);
+                    None
+                }
+            }
+        })
+        .filter(|loaded| loaded.is_some())
+        .nth(0)
+        .map(|inner| Value::Table(inner.unwrap()))
+        .ok_or(ConfigErrorKind::NoConfigFileFound.into())
 }
 
-impl<'a> GetConfiguration for App<'a, 'a> {}
-
 pub trait InternalConfiguration {
     fn enable_logging(&self) -> bool {
         true
diff --git a/libimagrt/src/runtime.rs b/libimagrt/src/runtime.rs
index 57f4f170..0ec1de19 100644
--- a/libimagrt/src/runtime.rs
+++ b/libimagrt/src/runtime.rs
@@ -29,7 +29,7 @@ use clap::{Arg, ArgMatches};
 use log;
 use log::LogLevelFilter;
 
-use configuration::{Configuration, GetConfiguration, InternalConfiguration};
+use configuration::{Configuration, InternalConfiguration};
 use error::RuntimeError;
 use error::RuntimeErrorKind;
 use error::MapErrInto;
@@ -56,14 +56,9 @@ impl<'a> Runtime<'a> {
     /// and builds the Runtime object with it.
     ///
     /// The cli_app object should be initially build with the ::get_default_cli_builder() function.
-    pub fn new<C>(mut cli_app: C) -> Result<Runtime<'a>, RuntimeError>
-        where C: Clone + CliSpec<'a> + GetConfiguration + InternalConfiguration
+    pub fn new<C>(cli_app: C) -> Result<Runtime<'a>, RuntimeError>
+        where C: Clone + CliSpec<'a> + InternalConfiguration
     {
-        use std::env;
-        use std::io::stdout;
-
-        use clap::Shell;
-
         use libimagerror::trace::trace_error;
         use libimagerror::into::IntoError;
 
@@ -71,11 +66,51 @@ impl<'a> Runtime<'a> {
 
         let matches = cli_app.clone().matches();
 
-        let is_debugging = matches.is_present("debugging");
-        let is_verbose   = matches.is_present("verbosity");
-        let colored      = !matches.is_present("no-color-output");
+        let rtp = get_rtp_match(&matches);
+
+        let configpath = matches.value_of(Runtime::arg_config_name())
+                                .map_or_else(|| rtp.clone(), PathBuf::from);
+
+        let config = match Configuration::new(&configpath) {
+            Err(e) => if e.err_type() != ConfigErrorKind::NoConfigFileFound {
+                return Err(RuntimeErrorKind::Instantiate.into_error_with_cause(Box::new(e)));
+            } else {
+                warn!("No config file found.");
+                warn!("Continuing without configuration file");
+                None
+            },
+
+            Ok(mut config) => {
+                if let Err(e) = config.override_config(get_override_specs(&matches)) {
+                    error!("Could not apply config overrides");
+                    trace_error(&e);
+
+                    // TODO: continue question (interactive)
+                }
+
+                Some(config)
+            }
+        };
+
+        Runtime::with_configuration(cli_app, config)
+    }
+
+    /// Builds the Runtime object using the given `config`.
+    pub fn with_configuration<C>(mut cli_app: C, config: Option<Configuration>) -> Result<Runtime<'a>, RuntimeError>
+        where C: Clone + CliSpec<'a> + InternalConfiguration
+    {
+        use std::io::stdout;
+
+        use clap::Shell;
+
+        let matches = cli_app.clone().matches();
+
+        let is_debugging = matches.is_present(Runtime::arg_debugging_name());
 
         if cli_app.enable_logging() {
+            let is_verbose = matches.is_present(Runtime::arg_verbosity_name());
+            let colored    = !matches.is_present(Runtime::arg_no_color_output_name());
+
             Runtime::init_logger(is_debugging, is_verbose, colored);
         }
 
@@ -89,64 +124,29 @@ impl<'a> Runtime<'a> {
             _ => debug!("Not generating shell completion script"),
         }
 
-        let rtp : PathBuf = matches.value_of("runtimepath")
-            .map_or_else(|| {
-                env::var("HOME")
-                    .map(PathBuf::from)
-                    .map(|mut p| { p.push(".imag"); p})
-                    .unwrap_or_else(|_| {
-                        panic!("You seem to be $HOME-less. Please get a $HOME before using this software. We are sorry for you and hope you have some accommodation anyways.");
-                    })
-            }, PathBuf::from);
-        let storepath = matches.value_of("storepath")
+        let rtp = get_rtp_match(&matches);
+
+        let storepath = matches.value_of(Runtime::arg_storepath_name())
                                 .map_or_else(|| {
                                     let mut spath = rtp.clone();
                                     spath.push("store");
                                     spath
                                 }, PathBuf::from);
 
-        let configpath = matches.value_of("config")
-                                .map_or_else(|| rtp.clone(), PathBuf::from);
-
-        debug!("RTP path    = {:?}", rtp);
-        debug!("Store path  = {:?}", storepath);
-        debug!("Config path = {:?}", configpath);
-
-        let cfg = match cli_app.get_configuration(&configpath) {
-            Err(e) => if e.err_type() != ConfigErrorKind::NoConfigFileFound {
-                return Err(RuntimeErrorKind::Instantiate.into_error_with_cause(Box::new(e)));
-            } else {
-                warn!("No config file found.");
-                warn!("Continuing without configuration file");
-                None
-            },
-
-            Ok(mut cfg) => {
-                if let Err(e) = cfg.override_config(get_override_specs(&matches)) {
-                    error!("Could not apply config overrides");
-                    trace_error(&e);
-
-                    // TODO: continue question (interactive)
-                }
-
-                Some(cfg)
-            }
-        };
-
-        let store_config = match cfg {
+        let store_config = match config {
             Some(ref c) => c.store_config().cloned(),
             None        => None,
         };
 
         if is_debugging {
-            write!(stderr(), "Config: {:?}\n", cfg).ok();
+            write!(stderr(), "Config: {:?}\n", config).ok();
             write!(stderr(), "Store-config: {:?}\n", store_config).ok();
         }
 
-        Store::new(storepath.clone(), store_config).map(|store| {
+        Store::new(storepath, store_config).map(|store| {
             Runtime {
                 cli_matches: matches,
-                configuration: cfg,
+                configuration: config,
                 rtp: rtp,
                 store: store,
             }
@@ -408,6 +408,22 @@ impl<'a> Runtime<'a> {
     }
 }
 
+fn get_rtp_match<'a>(matches: &ArgMatches<'a>) -> PathBuf {
+    use std::env;
+
+    matches.value_of(Runtime::arg_runtimepath_name())
+        .map_or_else(|| {
+            env::var("HOME")
+                .map(PathBuf::from)
+                .map(|mut p| { p.push(".imag"); p })
+                .unwrap_or_else(|_| {
+                    panic!("You seem to be $HOME-less. Please get a $HOME before using this \
+                            software. We are sorry for you and hope you have some \
+                            accommodation anyways.");
+                })
+        }, PathBuf::from)
+}
+
 fn get_override_specs(matches: &ArgMatches) -> Vec<String> {
     matches
         .values_of("config-override")