env var injector

Author: Alexander Weber

.complate/config.yaml

@@ -1,48 +1,55 @@
 version: 0.10
 templates:
-    one:
-        content:
-            file: ./.complate/templates/arbitraty-template-file.tpl
-        values:
-            a.summary:
-                static: "random summary"
-    two:
-        content:
-            inline: |-
-                {{ a.alpha }}
-                {{ b.bravo }}
-                {{ c.charlie }}
-                {{ d.delta }}
-                {{ e.echo }}
-        values:
-            a.alpha:
-              prompt: "alpha"
-            b.bravo:
-              shell: "printf bravo"
-            c.charlie:
-              static: "charlie"
-            d.delta:
-                select:
-                    text: Select the version level that shall be incremented
-                    options:
-                      alpha:
-                        display: alpha
-                        value:
-                          static: alpha
-                      bravo:
-                        display: bravo
-                        value:
-                          shell: printf bravo
-            e.echo:
-                check:
-                    text: Select the components that are affected
-                    separator: ", "
-                    options:
-                      alpha:
-                        display: alpha
-                        value:
-                          static: alpha
-                      bravo:
-                        display: bravo
-                        value:
-                          shell: printf bravo
+  zero:
+    content:
+      inline: |-
+        {{ a.alpha }}
+    values:
+      a.alpha:
+        env: ALPHA
+  one:
+    content:
+      file: ./.complate/templates/arbitraty-template-file.tpl
+    values:
+      a.summary:
+        static: "random summary"
+  two:
+    content:
+      inline: |-
+        {{ a.alpha }}
+        {{ b.bravo }}
+        {{ c.charlie }}
+        {{ d.delta }}
+        {{ e.echo }}
+    values:
+      a.alpha:
+        prompt: "alpha"
+      b.bravo:
+        shell: "printf bravo"
+      c.charlie:
+        static: "charlie"
+      d.delta:
+        select:
+          text: Select the version level that shall be incremented
+          options:
+            alpha:
+              display: alpha
+              value:
+                static: alpha
+            bravo:
+              display: bravo
+              value:
+                shell: printf bravo
+      e.echo:
+        check:
+          text: Select the components that are affected
+          separator: ", "
+          options:
+            alpha:
+              display: alpha
+              value:
+                static: alpha
+            bravo:
+              display: bravo
+              value:
+                shell: printf bravo

src/config/mod.rs

@@ -37,6 +37,7 @@ pub struct Option {
 #[derive(Debug, serde::Serialize, serde::Deserialize)]
 #[serde(rename_all = "snake_case")]
 pub enum VariableDefinition {
+    Env(String),
     Static(String),
     Prompt(String),
     Shell(String),
@@ -72,12 +73,19 @@ impl Template {
 pub async fn default_config() -> String {
     r###"version: 0.10
 templates:
+    zero:
+        content:
+            inline: |-
+                {{ a.alpha }}
+        values:
+            a.alpha:
+                env: ALPHA
     one:
         content:
             file: ./.complate/templates/arbitraty-template-file.tpl
         values:
             a.summary:
-                static: "random summary"
+                env: "random summary"
     two:
         content:
             inline: |-
@@ -118,7 +126,8 @@ templates:
                         display: bravo
                         value:
                           shell: printf bravo
-
+            f.foxtrot:
+                env: "FOXTROT"
 "###
     .to_owned()
 }

src/render/mod.rs

@@ -2,6 +2,7 @@ use crate::args::{Backend, ShellTrust};
 use crate::config::{Config, Content, Option, OptionValue, Template, VariableDefinition};
 use async_trait::async_trait;
 use std::collections::BTreeMap;
+use std::env;
 use std::result::Result;
 
 #[cfg(feature = "backend+cli")]
@@ -175,6 +176,7 @@ impl Resolve for VariableDefinition {
         let backend_impl = backend.to_input(shell_trust)?;
 
         match self {
+            VariableDefinition::Env(v) => Ok(env::var(v)?),
             VariableDefinition::Static(v) => Ok(v.to_owned()),
             VariableDefinition::Prompt(v) => backend_impl.prompt(v).await,
             VariableDefinition::Shell(cmd) => backend_impl.shell(cmd, shell_trust).await,