Struct EnvParser 

pub struct EnvParser;

A parser for environment variables.

Trait Implementations

impl Debug for EnvParser

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<T: AsRef<str>> Parser<T> for EnvParser

fn parse(args: T) -> Result<Self::Item, Self::Error>

Parses environment variables based on a given prefix.

This function filters environment variables that start with the given prefix, removes the prefix from the key, converts the key to lowercase, and stores the resulting key-value pairs in a Value.

Arguments

• args - A string-like type that represents the prefix to filter environment variables.

Returns

• Result<Self::Item, Self::Error> - A Result containing either:
  • Ok(Value::Table(map)) where map is a Map of filtered and processed environment variables.
  • Err(Error) if an error occurs during parsing (note: this implementation always returns Ok).

Examples

use std::env;

use realme::prelude::*;

// Assuming environment variables: APP_NAME=MyApp, APP_VERSION=1.0
env::set_var("APP_NAME", "MyApp");
env::set_var("APP_VERSION", "1.0");
let result = EnvParser::parse("APP_");
assert!(result.is_ok());
// The resulting map would contain: {"name": "MyApp", "version": "1.0"}

type Item = Value

The type of item produced by the parser.

type Error = Error

The type of error that can occur during parsing.