<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="Source of the Rust file `src/lib/functions/decode_func.rs`."><title>decode_func.rs - source</title><script>if(window.location.protocol!=="file:")document.head.insertAdjacentHTML("beforeend","SourceSerif4-Regular-6b053e98.ttf.woff2,FiraSans-Regular-0fe48ade.woff2,FiraSans-Medium-e1aa3f0a.woff2,SourceCodePro-Regular-8badfe75.ttf.woff2,SourceCodePro-Semibold-aa29a496.ttf.woff2".split(",").map(f=>`<link rel="preload" as="font" type="font/woff2" crossorigin href="../../../static.files/${f}">`).join(""))</script><link rel="stylesheet" href="../../../static.files/normalize-9960930a.css"><link rel="stylesheet" href="../../../static.files/rustdoc-c579a84d.css"><meta name="rustdoc-vars" data-root-path="../../../" data-static-root-path="../../../static.files/" data-current-crate="cli" data-themes="" data-resource-suffix="" data-rustdoc-version="1.86.0-nightly (6067b3631 2025-01-17)" data-channel="nightly" data-search-js="search-ccb196c1.js" data-settings-js="settings-0f613d39.js" ><script src="../../../static.files/storage-59e33391.js"></script><script defer src="../../../static.files/src-script-56102188.js"></script><script defer src="../../../src-files.js"></script><script defer src="../../../static.files/main-5f194d8c.js"></script><noscript><link rel="stylesheet" href="../../../static.files/noscript-893ab5e7.css"></noscript><link rel="alternate icon" type="image/png" href="../../../static.files/favicon-32x32-6580c154.png"><link rel="icon" type="image/svg+xml" href="../../../static.files/favicon-044be391.svg"></head><body class="rustdoc src"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><div class="src-sidebar-title"><h2>Files</h2></div></nav><div class="sidebar-resizer"></div><main><rustdoc-search></rustdoc-search><section id="main-content" class="content"><div class="main-heading"><h1><div class="sub-heading">cli/functions/</div>decode_func.rs</h1><rustdoc-toolbar></rustdoc-toolbar></div><div class="example-wrap"><div data-nosnippet><pre class="src-line-numbers">
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//!
//! Takes an environment variable name and returns its mapped value.
//! In case no mapped value if found, the default value will be returned if provided as last argument or if no default value is provided, the original value is returned.
//! The value will be removed if empty.
//!
</span><span class="attr">#[cfg(test)]
#[path = <span class="string">"decode_func_test.rs"</span>]
</span><span class="kw">mod </span>decode_func_test;
<span class="kw">use </span><span class="kw">crate</span>::environment;
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>invoke(function_args: <span class="kw-2">&</span>Vec<String>) -> Vec<String> {
<span class="kw">if </span>function_args.len() == <span class="number">0 </span>{
<span class="macro">error!</span>(<span class="string">"decode expects at least one argument."</span>);
}
<span class="kw">let </span>env_key = function_args[<span class="number">0</span>].clone();
<span class="kw">let </span>env_value = envmnt::get_or(<span class="kw-2">&</span>env_key, <span class="string">""</span>);
<span class="kw">let </span><span class="kw-2">mut </span>mapped_value = <span class="prelude-val">None</span>;
<span class="kw">let </span><span class="kw-2">mut </span>found = <span class="bool-val">false</span>;
<span class="kw">let </span><span class="kw-2">mut </span>skip = <span class="bool-val">true</span>;
<span class="kw">for </span>item <span class="kw">in </span>function_args.iter() {
<span class="kw">if </span>skip {
skip = <span class="bool-val">false</span>;
} <span class="kw">else if </span>found {
mapped_value = <span class="prelude-val">Some</span>(item.to_string());
<span class="kw">break</span>;
} <span class="kw">else if </span>item.to_string() == env_value {
found = <span class="bool-val">true</span>;
} <span class="kw">else </span>{
skip = <span class="bool-val">true</span>;
}
}
<span class="comment">// if no mapped value found and default value provided
</span><span class="kw">let </span><span class="kw-2">mut </span>output_value = <span class="kw">match </span>mapped_value {
<span class="prelude-val">Some</span>(value) => value.clone(),
<span class="prelude-val">None </span>=> {
<span class="kw">if </span>function_args.len() % <span class="number">2 </span>== <span class="number">0 </span>&& function_args.len() > <span class="number">1 </span>{
function_args[function_args.len() - <span class="number">1</span>].to_string()
} <span class="kw">else </span>{
env_value.clone()
}
}
};
output_value = environment::expand_value(<span class="kw-2">&</span>output_value);
<span class="kw">if </span>output_value.len() > <span class="number">0 </span>{
<span class="macro">vec!</span>[output_value]
} <span class="kw">else </span>{
<span class="macro">vec!</span>[]
}
}
</code></pre></div></section></main></body></html>