feat: New std library "env" for accessing the process environment

1 files changed, 74 insertions, 0 deletions

diff --git a/docs/std/env.md b/docs/std/env.md
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+# Standard Library: Env (`std/env.zc`)
+
+`Env` is a Zen-C library for accessing the environment of the process environment.
+
+## Usage
+
+```zc
+import "std/env.zc"
+
+fn main() {
+    Env::set("HELLO", "world");
+
+    var hello = Env::get("HELLO");
+
+    if (hello.is_some()) {
+        println "Hello {hello.unwrap()}";
+    }
+}
+```
+
+## Enum
+
+```zc
+enum EnvRes {
+    ERR,
+    OK,
+}
+```
+
+## Methods
+
+### get
+
+Retrieves the env-var as borrowed string (char *) (no alloc)
+
+```zc
+fn get(name: string) -> Option<string>
+```
+
+### get_dup
+
+Retrieves the env-var as caller-owned String() (heap alloc)
+
+```zc
+fn get_dup(name: string) -> Option<String>
+```
+
+### set
+
+Sets an env-var variable
+
+```zc
+fn set(name: string, value: string) -> EnvRes
+```
+
+### set_overwrite
+
+Overwrites an exisiting env-var / creates it if it doesn't exist
+
+```zc
+fn set_overwrite(name: string, value: string) -> EnvRes
+```
+
+### unset
+
+Unsets an existing env-var
+
+```zc
+fn unset(name: string) -> EnvRes
+```
+
+---
+
+Check the ``examples`` folder for more.