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Merge pull request #1024 from matthiasbeyer/libimagrt/config-loading-fix

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Libimagrt/config loading fix
This commit is contained in:
Matthias Beyer 2017-08-27 14:57:31 +02:00 committed by GitHub
commit 31254071e5
1 changed files with 22 additions and 14 deletions
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36
libimagrt/src/configuration.rs
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@ -36,7 +36,8 @@ generate_error_module!(
);
);
pub use self::error::{ConfigError, ConfigErrorKind};
pub use self::error::{ConfigError, ConfigErrorKind, MapErrInto};
use libimagerror::into::IntoError;
/// Result type of this module. Either `T` or `ConfigError`
pub type Result<T> = RResult<T, ConfigError>;
@ -70,8 +71,8 @@ impl Configuration {
/// with all variants.
///
/// If that doesn't work either, an error is returned.
pub fn new(rtp: &PathBuf) -> Result<Configuration> {
fetch_config(&rtp).map(|cfg| {
pub fn new(config_searchpath: &PathBuf) -> Result<Configuration> {
fetch_config(&config_searchpath).map(|cfg| {
let verbosity = get_verbosity(&cfg);
let editor = get_editor(&cfg);
let editor_opts = get_editor_opts(&cfg);
@ -223,7 +224,7 @@ fn get_editor_opts(v: &Value) -> String {
/// Helper to fetch the config file
///
/// Tests several variants for the config file path and uses the first one which works.
fn fetch_config(rtp: &PathBuf) -> Result<Value> {
fn fetch_config(searchpath: &PathBuf) -> Result<Value> {
use std::env;
use std::fs::File;
use std::io::Read;
@ -244,8 +245,8 @@ fn fetch_config(rtp: &PathBuf) -> Result<Value> {
};
vec![
vec![rtp.clone()],
gen_vars(rtp.clone(), variants.clone(), &modifier),
vec![searchpath.clone()],
gen_vars(searchpath.clone(), variants.clone(), &modifier),
env::var("HOME").map(|home| gen_vars(PathBuf::from(home), variants.clone(), &modifier))
.unwrap_or(vec![]),
@ -255,30 +256,37 @@ fn fetch_config(rtp: &PathBuf) -> Result<Value> {
].iter()
.flatten()
.filter(|path| path.exists() && path.is_file())
.map(|path| {
.filter_map(|path| {
let content = {
let mut s = String::new();
let f = File::open(path);
if f.is_err() {
let _ = write!(stderr(), "Error opening file: {:?}", f);
return None
}
let mut f = f.unwrap();
let mut s = String::new();
f.read_to_string(&mut s).ok();
s
};
match ::toml::de::from_str(&content[..]) {
Ok(res) => res,
match ::toml::de::from_str::<::toml::Value>(&content[..]) {
Ok(res) => Some(res),
Err(e) => {
write!(stderr(), "Config file parser error:").ok();
trace_error(&e);
let line_col = e
.line_col()
.map(|(line, col)| {
format!("Line {}, Column {}", line, col)
})
.unwrap_or_else(|| String::from("Line unknown, Column unknown"));
let _ = write!(stderr(), "Config file parser error at {}", line_col);
trace_error(&ConfigErrorKind::TOMLParserError.into_error_with_cause(Box::new(e)));
None
}
}
})
.filter(|loaded| loaded.is_some())
.nth(0)
.map(|inner| Value::Table(inner.unwrap()))
.ok_or(ConfigErrorKind::NoConfigFileFound.into())
}