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|
use super::{Context, Module, ModuleConfig};
use crate::configs::c::CConfig;
use crate::formatter::StringFormatter;
use crate::formatter::VersionFormatter;
use once_cell::sync::Lazy;
use semver::Version;
use std::borrow::Cow;
use std::ops::Deref;
/// Creates a module with the current C compiler and version
pub fn module<'a>(context: &'a Context) -> Option<Module<'a>> {
let mut module = context.new_module("c");
let config: CConfig = CConfig::try_load(module.config);
let is_c_project = context
.try_begin_scan()?
.set_extensions(&config.detect_extensions)
.set_files(&config.detect_files)
.set_folders(&config.detect_folders)
.is_match();
if !is_c_project {
return None;
}
let parsed = StringFormatter::new(config.format).and_then(|formatter| {
let c_compiler_info = Lazy::new(|| context.exec_cmds_return_first(config.commands));
formatter
.map_meta(|var, _| match var {
"symbol" => Some(config.symbol),
_ => None,
})
.map_style(|variable| match variable {
"style" => Some(Ok(config.style)),
_ => None,
})
.map(|variable| match variable {
"name" => {
let c_compiler_info = &c_compiler_info.deref().as_ref()?.stdout;
let c_compiler = if c_compiler_info.contains("clang") {
"clang"
} else if c_compiler_info.contains("Free Software Foundation") {
"gcc"
} else {
return None;
};
Some(Ok(Cow::Borrowed(c_compiler)))
}
"version" => {
let c_compiler_info = &c_compiler_info.deref().as_ref()?.stdout;
// Clang says ...
// Apple clang version 13.0.0 ...\n
// OpenBSD clang version 11.1.0\n...
// FreeBSD clang version 11.0.1 ...\n
// so we always want the first semver-ish whitespace-
// separated "word".
// gcc says ...
// gcc (OmniOS 151036/9.3.0-il-1) 9.3.0\n...
// gcc (Debian 10.2.1-6) 10.2.1 ...\n
// cc (GCC) 3.3.5 (Debian 1:3.3.5-13)\n...
// so again we always want the first semver-ish word.
VersionFormatter::format_module_version(
module.get_name(),
c_compiler_info
.split_whitespace()
.find(|word| Version::parse(word).is_ok())?,
config.version_format,
)
.map(Cow::Owned)
.map(Ok)
}
_ => None,
})
.parse(None, Some(context))
});
module.set_segments(match parsed {
Ok(segments) => segments,
Err(error) => {
log::warn!("Error in module `c`:\n{}", error);
return None;
}
});
Some(module)
}
#[cfg(test)]
mod tests {
use crate::{test::ModuleRenderer, utils::CommandOutput};
use nu_ansi_term::Color;
use std::fs::File;
use std::io;
#[test]
fn folder_without_c_files() -> io::Result<()> {
let dir = tempfile::tempdir()?;
let actual = ModuleRenderer::new("c").path(dir.path()).collect();
let expected = None;
assert_eq!(expected, actual);
dir.close()
}
#[test]
fn folder_with_c_file() -> io::Result<()> {
let dir = tempfile::tempdir()?;
File::create(dir.path().join("any.c"))?.sync_all()?;
// What happens when `cc --version` says it's modern gcc?
// The case when it claims to be clang is covered in folder_with_h_file,
// and uses the mock in src/test/mod.rs.
let actual = ModuleRenderer::new("c")
.cmd(
"cc --version",
Some(CommandOutput {
stdout: String::from(
"\
cc (Debian 10.2.1-6) 10.2.1 20210110
Copyright (C) 2020 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.",
),
stderr: String::default(),
}),
)
.path(dir.path())
.collect();
let expected = Some(format!(
"via {}",
Color::Fixed(149).bold().paint("C v10.2.1-gcc ")
));
assert_eq!(expected, actual);
// What happens when `cc --version` says it's ancient gcc?
let actual = ModuleRenderer::new("c")
.cmd(
"cc --version",
Some(CommandOutput {
stdout: String::from(
"\
cc (GCC) 3.3.5 (Debian 1:3.3.5-13)
Copyright (C) 2003 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.",
),
stderr: String::default(),
}),
)
.path(dir.path())
.collect();
let expected = Some(format!(
"via {}",
Color::Fixed(149).bold().paint("C v3.3.5-gcc ")
));
assert_eq!(expected, actual);
// What happens with an unknown C compiler? Needless to say, we're
// not running on a Z80 so we're never going to see this one in reality!
let actual = ModuleRenderer::new("c")
.cmd(
"cc --version",
Some(CommandOutput {
stdout: String::from("HISOFT-C Compiler V1.2\nCopyright © 1984 HISOFT"),
stderr: String::default(),
}),
)
.path(dir.path())
.collect();
let expected = Some(format!("via {}", Color::Fixed(149).bold().paint("C ")));
assert_eq!(expected, actual);
// What happens when 'cc --version' doesn't work, but 'gcc --version' does?
// This stubs out `cc` but we'll fall back to `gcc --version` as defined in
// src/test/mod.rs.
// Also we don't bother to redefine the config for this one, as we've already
// proved we can parse its version.
let actual = ModuleRenderer::new("c")
.cmd("cc --version", None)
.path(dir.path())
.collect();
let expected = Some(format!(
"via {}",
Color::Fixed(149).bold().paint("C v10.2.1-gcc ")
));
assert_eq!(expected, actual);
// Now with both 'cc' and 'gcc' not working, this should fall back to 'clang --version'
let actual = ModuleRenderer::new("c")
.cmd("cc --version", None)
.cmd("gcc --version", None)
.path(dir.path())
.collect();
let expected = Some(format!(
"via {}",
Color::Fixed(149).bold().paint("C v11.1.0-clang ")
));
assert_eq!(expected, actual);
// What happens when we can't find any of cc, gcc or clang?
let actual = ModuleRenderer::new("c")
.cmd("cc --version", None)
.cmd("gcc --version", None)
.cmd("clang --version", None)
.path(dir.path())
.collect();
let expected = Some(format!("via {}", Color::Fixed(149).bold().paint("C ")));
assert_eq!(expected, actual);
dir.close()
}
#[test]
fn folder_with_h_file() -> io::Result<()> {
let dir = tempfile::tempdir()?;
File::create(dir.path().join("any.h"))?.sync_all()?;
let actual = ModuleRenderer::new("c").path(dir.path()).collect();
let expected = Some(format!(
"via {}",
Color::Fixed(149).bold().paint("C v11.0.1-clang ")
));
assert_eq!(expected, actual);
dir.close()
}
}
|
