Merge pull request #10 from icetemple/array-type

feat(array): add new feature for impl vec

README.md

@@ -109,12 +109,39 @@ cargo test
 * [x] Concat env variables to one variable
 * [x] Add nested namespaces
 * [x] Support meta for namespaces
-* [ ] Support array type
+* [x] Support array type
 * [ ] Support hashmap type
 * [ ] Support custom env type
 * [ ] Common configuration for namespace variables
 
 
+## Available features
+
+* default = ["macro", "primitives"]
+* macro = []
+* array = ["serde_json"]
+* primitives = ["numbers", "bool"]
+* numbers = ["int", "uint", "float"]
+* int = ["i8", "i16", "i32", "i64", "i128", "isize"]
+* uint = ["u8", "u16", "u32", "u64", "u128", "usize"]
+* float = ["f32", "f64"]
+* i8    = []
+* i16   = []
+* i32   = []
+* i64   = []
+* i128  = []
+* isize = []
+* u8    = []
+* u16   = []
+* u32   = []
+* u64   = []
+* u128  = []
+* usize = []
+* f32   = []
+* f64   = []
+* bool  = []
+
+
 ## License
 
 [MIT] © [Ice Temple](https://github.com/icetemple)

examples/diesel/Cargo.toml

@@ -7,6 +7,6 @@ edition = "2018"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-itconfig = { path = "../../itconfig" }
+itconfig = { path = "../../itconfig", default-features = false, features = ["macro"] }
 dotenv = "0.15.0"
 diesel = { version = "1.4.3", features = ["postgres"] }

itconfig/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "itconfig"
-version = "0.10.1"
+version = "0.10.2"
 authors = ["Dmitriy Pleshevskiy <dmitriy@ideascup.me>"]
 description = "Easy build a configs from environment variables and use it in globally."
 categories = ["config", "web-programming"]
@@ -14,17 +14,17 @@ readme = "README.md"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
-[badges]
-travis-ci = { repository = "icetemple/itconfig-rs" }
-maintenance = { status = "actively-developed" }
-
 [dependencies]
 failure = { version = "0.1.6", features = ["derive"]}
+serde_json = { version = "1.0.44", optional = true }
 
 [features]
-default = ["macro", "numbers", "bool"]
+default = ["macro", "primitives"]
 macro = []
 
+array = ["serde_json"]
+
+primitives = ["numbers", "bool"]
 numbers = ["int", "uint", "float"]
 int = ["i8", "i16", "i32", "i64", "i128", "isize"]
 uint = ["u8", "u16", "u32", "u64", "u128", "usize"]
@@ -48,3 +48,8 @@ f32   = []
 f64   = []
 
 bool  = []
+
+
+[badges]
+travis-ci = { repository = "icetemple/itconfig-rs" }
+maintenance = { status = "actively-developed" }

itconfig/README.md

@@ -90,12 +90,38 @@ fn main() {
 * [x] Concat env variables to one variable
 * [x] Add nested namespaces
 * [x] Support meta for namespaces
-* [ ] Support array type
+* [x] Support array type
 * [ ] Support hashmap type
 * [ ] Support custom env type
 * [ ] Common configuration for namespace variables
 
 
+## Available features
+
+* default = ["macro", "primitives"]
+* macro = []
+* array = ["serde_json"]
+* primitives = ["numbers", "bool"]
+* numbers = ["int", "uint", "float"]
+* int = ["i8", "i16", "i32", "i64", "i128", "isize"]
+* uint = ["u8", "u16", "u32", "u64", "u128", "usize"]
+* float = ["f32", "f64"]
+* i8    = []
+* i16   = []
+* i32   = []
+* i64   = []
+* i128  = []
+* isize = []
+* u8    = []
+* u16   = []
+* u32   = []
+* u64   = []
+* u128  = []
+* usize = []
+* f32   = []
+* f64   = []
+* bool  = []
+
 
 ## License
 

itconfig/src/envstr.rs

@@ -74,6 +74,42 @@ impl FromEnvString for bool {
 }
 
 
+
+#[cfg(feature = "array")]
+pub enum ArrayEnvError {
+    InvalidType,
+    FailedToParse,
+}
+
+
+#[cfg(feature = "array")]
+impl<T> FromEnvString for Vec<T>
+    where T: FromEnvString
+{
+    type Err = ArrayEnvError;
+
+    fn from_env_string(s: &EnvString) -> Result<Self, Self::Err> {
+        serde_json::from_str::<Vec<isize>>(s.trim())
+            .map(|vec| {
+                vec.iter().map(|v| v.to_string()).collect::<Vec<String>>()
+            })
+            .or_else(|_| {
+                serde_json::from_str::<Vec<String>>(s.trim())
+            })
+            .map_err(|_| ArrayEnvError::InvalidType)
+            .and_then(|vec| {
+                vec.iter()
+                    .map(|v| {
+                        v.to_env_string()
+                            .parse::<T>()
+                            .map_err(|_| ArrayEnvError::FailedToParse)
+                    })
+                    .collect::<Result<Vec<T>, _>>()
+            })
+    }
+}
+
+
 impl FromEnvString for String {
     type Err = ();