1 files changed, 66 insertions, 17 deletions
diff --git a/src/env.rs b/src/env.rs
index 5eb06cc1..8735d913 100644
--- a/src/env.rs
+++ b/src/env.rs
@@ -1,24 +1,73 @@
-#[cfg(not(test))]
 use std::env;
 
-/// If `name` is set and, after trimming whitespace, is not empty string, then return that trimmed
-/// string. Else None.
-pub fn get_env_var(_name: &str) -> Option<String> {
-    #[cfg(not(test))]
-    match env::var(_name).unwrap_or_else(|_| "".to_string()).trim() {
-        "" => None,
-        non_empty_string => Some(non_empty_string.to_string()),
+const COLORTERM: &str = "COLORTERM";
+const BAT_THEME: &str = "BAT_THEME";
+const GIT_CONFIG_PARAMETERS: &str = "GIT_CONFIG_PARAMETERS";
+const GIT_PREFIX: &str = "GIT_PREFIX";
+const DELTA_FEATURES: &str = "DELTA_FEATURES";
+const DELTA_NAVIGATE: &str = "DELTA_NAVIGATE";
+const DELTA_EXPERIMENTAL_MAX_LINE_DISTANCE_FOR_NAIVELY_PAIRED_LINES: &str =
+    "DELTA_EXPERIMENTAL_MAX_LINE_DISTANCE_FOR_NAIVELY_PAIRED_LINES";
+const DELTA_PAGER: &str = "DELTA_PAGER";
+const BAT_PAGER: &str = "BAT_PAGER";
+const PAGER: &str = "PAGER";
+
+#[derive(Default, Clone)]
+pub struct DeltaEnv {
+    pub bat_theme: Option<String>,
+    pub colorterm: Option<String>,
+    pub current_dir: Option<std::path::PathBuf>,
+    pub experimental_max_line_distance_for_naively_paired_lines: Option<String>,
+    pub features: Option<String>,
+    pub git_config_parameters: Option<String>,
+    pub git_prefix: Option<String>,
+    pub navigate: Option<String>,
+    pub pagers: (Option<String>, Option<String>, Option<String>),
+}
+
+impl DeltaEnv {
+    /// Create a structure with current environment variable
+    pub fn init() -> Self {
+        let bat_theme = env::var(BAT_THEME).ok();
+        let colorterm = env::var(COLORTERM).ok();
+        let experimental_max_line_distance_for_naively_paired_lines =
+            env::var(DELTA_EXPERIMENTAL_MAX_LINE_DISTANCE_FOR_NAIVELY_PAIRED_LINES).ok();
+        let features = env::var(DELTA_FEATURES).ok();
+        let git_config_parameters = env::var(GIT_CONFIG_PARAMETERS).ok();
+        let git_prefix = env::var(GIT_PREFIX).ok();
+        let navigate = env::var(DELTA_NAVIGATE).ok();
+
+        let current_dir = env::current_dir().ok();
+        let pagers = (
+            env::var(DELTA_PAGER).ok(),
+            env::var(BAT_PAGER).ok(),
+            env::var(PAGER).ok(),
+        );
+
+        Self {
+            bat_theme,
+            colorterm,
+            current_dir,
+            experimental_max_line_distance_for_naively_paired_lines,
+            features,
+            git_config_parameters,
+            git_prefix,
+            navigate,
+            pagers,
+        }
     }
-    #[cfg(test)]
-    None
 }
 
-/// If `name` is set to any value at all (including "") then return true; else false.
-pub fn get_boolean_env_var(_name: &str) -> bool {
-    #[cfg(not(test))]
-    {
-        env::var(_name).ok().is_some()
+#[cfg(test)]
+pub mod tests {
+    use super::DeltaEnv;
+    use std::env;
+
+    #[test]
+    fn test_env_parsing() {
+        let feature = "Awesome Feature";
+        env::set_var("DELTA_FEATURES", feature);
+        let env = DeltaEnv::init();
+        assert_eq!(env.features, Some(feature.into()));
     }
-    #[cfg(test)]
-    false
 }