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malachite/src/internal/read.rs

109 lines
3.4 KiB
Rust

use std::fs;
use std::path::Path;
use crate::internal::structs::{Config, Repo, SplitRepo, UnexpandedConfig};
use crate::internal::AppExitCode;
use crate::{crash, log};
pub fn parse_cfg(verbose: bool) -> Config {
// Crash if mlc.toml doesn't exist
if !Path::exists("mlc.toml".as_ref()) {
crash!(
AppExitCode::ConfigNotFound,
"Config file not found (mlc.toml)"
);
}
// Reading the config file to an UnexpandedConfig struct
let file = fs::read_to_string("mlc.toml").unwrap();
let config: UnexpandedConfig = toml::from_str(&file).unwrap_or_else(|e| {
crash!(
AppExitCode::ConfigParseError,
"Error parsing config file: {}",
e
);
// This is unreachable, but rustc complains about it otherwise
std::process::exit(1);
});
log!(verbose, "Config file read: {:?}", config);
// Crash if incorrect mode is set
if config.base.mode != "workspace" && config.base.mode != "repository" {
crash!(
AppExitCode::InvalidMode,
"Invalid mode in mlc.toml, must be either \"repository\" or \"workspace\""
);
}
let mut expanded_repos: Vec<Repo> = vec![];
// Parsing repos from the config file
for x in config.repositories.repos {
log!(verbose, "Parsing repo: {:?}", x);
// Splits the repo name and index inta a SplitRepo struct
let split: Vec<&str> = x.split(':').collect();
let split_struct = SplitRepo {
id: split[0].parse().unwrap(),
name: split[1].parse().unwrap(),
};
log!(verbose, "Split repo: {:?}", split_struct);
// Parses all necessary values for expanding the repo to a Repo struct
let id = split_struct.id;
// If a branch is defined, parse it
let branch = if split_struct.name.contains('/') {
log!(verbose, "Branch defined: {}", split_struct.name);
Some(
split_struct.name.split('/').collect::<Vec<&str>>()[1]
.to_string()
.replace('!', ""),
)
} else {
log!(verbose, "No branch defined");
None
};
// Strip branch and priority info from the name, if present
let name = if split_struct.name.contains('/') {
split_struct.name.split('/').collect::<Vec<&str>>()[0].to_string()
} else {
split_struct.name.to_string().replace('!', "")
};
// Substitutes the name into the url
let urls = &config.repositories.urls;
let mut urls_vec = vec![];
for (i, url) in urls {
if i == &id {
log!(verbose, "Substituting url: {:?}", url);
urls_vec.push(url);
}
}
let url = urls_vec[0].replace("{}", &name);
// Counts instances of ! in the name, and totals a priority accordingly
let priority = &split_struct.name.matches('!').count();
// Creates and pushes Repo struct to expanded_repos
let repo = Repo {
name,
url,
branch,
priority: *priority,
};
log!(verbose, "Expanded repo: {:?}", repo);
expanded_repos.push(repo);
}
// Returns parsed config file
let conf = Config {
base: config.base,
mode: config.mode,
repositories: expanded_repos,
};
log!(verbose, "Config: {:?}", conf);
conf
}