Merge pull request #7 from jonas-schievink/popen
Enable `io.popen` on Linux
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commit
75b7024a93
13
build.rs
13
build.rs
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@ -1,8 +1,17 @@
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extern crate gcc;
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use std::env;
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fn main() {
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gcc::Config::new()
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.define("LUA_USE_APICHECK", None)
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let mut config = gcc::Config::new();
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if env::var("CARGO_CFG_TARGET_OS") == Ok("linux".to_string()) {
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// Among other things, this enables `io.popen` support.
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// Despite the name, we could enable this on more platforms.
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config.define("LUA_USE_LINUX", None);
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}
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config.define("LUA_USE_APICHECK", None)
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.include("lua")
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.file("lua/lapi.c")
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.file("lua/lauxlib.c")
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@ -0,0 +1,40 @@
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//! This example shows a simple read-evaluate-print-loop (REPL).
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extern crate rlua;
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use rlua::*;
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use std::io::prelude::*;
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use std::io::{stdin, stdout, stderr, BufReader};
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fn main() {
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let lua = Lua::new();
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let mut stdout = stdout();
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let mut stdin = BufReader::new(stdin());
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loop {
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write!(stdout, "> ").unwrap();
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stdout.flush().unwrap();
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let mut line = String::new();
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loop {
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stdin.read_line(&mut line).unwrap();
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match lua.eval::<LuaMultiValue>(&line) {
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Ok(values) => {
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println!("{}", values.iter().map(|value| format!("{:?}", value)).collect::<Vec<_>>().join("\t"));
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break;
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}
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Err(LuaError(LuaErrorKind::IncompleteStatement(_), _)) => {
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// continue reading input and append it to `line`
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write!(stdout, ">> ").unwrap();
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stdout.flush().unwrap();
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}
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Err(e) => {
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writeln!(stderr(), "error: {}", e).unwrap();
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break;
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}
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}
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}
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}
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}
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