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<!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/disasm.rs`."><title>disasm.rs - source</title><script>if(window.location.protocol!=="file:")document.head.insertAdjacentHTML("beforeend","SourceSerif4-Regular-46f98efaafac5295.ttf.woff2,FiraSans-Regular-018c141bf0843ffd.woff2,FiraSans-Medium-8f9a781e4970d388.woff2,SourceCodePro-Regular-562dcc5011b6de7d.ttf.woff2,SourceCodePro-Semibold-d899c5a5c4aeb14a.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-76eba96aa4d2e634.css"><link rel="stylesheet" href="../../static.files/rustdoc-b0742ba02757f159.css"><meta name="rustdoc-vars" data-root-path="../../" data-static-root-path="../../static.files/" data-current-crate="juicebox_asm" data-themes="" data-resource-suffix="" data-rustdoc-version="1.83.0 (90b35a623 2024-11-26)" data-channel="1.83.0" data-search-js="search-f0d225181b97f9a4.js" data-settings-js="settings-805db61a62df4bd2.js" ><script src="../../static.files/storage-1d39b6787ed640ff.js"></script><script defer src="../../static.files/src-script-e66d777a5a92e9b2.js"></script><script defer src="../../src-files.js"></script><script defer src="../../static.files/main-f070b9041d14864c.js"></script><noscript><link rel="stylesheet" href="../../static.files/noscript-0111fcff984fae8f.css"></noscript><link rel="alternate icon" type="image/png" href="../../static.files/favicon-32x32-422f7d1d52889060.png"><link rel="icon" type="image/svg+xml" href="../../static.files/favicon-2c020d218678b618.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">juicebox_asm/</div>disasm.rs</h1><rustdoc-toolbar></rustdoc-toolbar></div><div class="example-wrap"><div data-nosnippet><pre class="src-line-numbers">
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<a href="#51" id="51">51</a></pre></div><pre class="rust"><code><span class="kw">use </span>std::io::{ErrorKind, Write};
<span class="kw">use </span>std::process::{Command, Stdio};
<span class="doccomment">/// Disassemble the code currently added to the runtime, using
/// [`ndisasm`](https://nasm.us/index.php) and print it to _stdout_. If
/// `ndisasm` is not available on the system this prints a warning and
/// becomes a nop.
///
/// # Panics
///
/// Panics if anything goes wrong with spawning, writing to or reading from
/// the `ndisasm` child process.
</span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>disasm<T: AsRef<[u8]>>(code: T) {
<span class="kw">let </span>code = code.as_ref();
<span class="comment">// Create ndisasm process, which expects input on stdin.
</span><span class="kw">let </span><span class="kw-2">mut </span>child = <span class="kw">match </span>Command::new(<span class="string">"ndisasm"</span>)
.args([<span class="string">"-b64"</span>, <span class="string">"-"</span>])
.stdin(Stdio::piped())
.stdout(Stdio::piped())
.spawn()
{
<span class="prelude-val">Ok</span>(child) => child,
<span class="prelude-val">Err</span>(err) <span class="kw">if </span>err.kind() == ErrorKind::NotFound => {
<span class="macro">println!</span>(<span class="string">"disasm: skipping, ndisasm not found"</span>);
<span class="kw">return</span>;
}
<span class="prelude-val">Err</span>(err) => {
<span class="macro">panic!</span>(<span class="string">"{:?}"</span>, err);
}
};
<span class="comment">// Write code to stdin of ndisasm.
</span>child
.stdin
.take()
.expect(<span class="string">"failed to take stdin"</span>)
.write_all(code)
.expect(<span class="string">"failed to write bytes to stdin"</span>);
<span class="comment">// Wait for output from ndisasm and print to stdout.
</span><span class="macro">println!</span>(
<span class="string">"{}"</span>,
String::from_utf8_lossy(
<span class="kw-2">&</span>child
.wait_with_output()
.expect(<span class="string">"failed to get stdout"</span>)
.stdout
)
);
}
</code></pre></div></section></main></body></html>
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