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use clap::ArgMatches;
use rayon::prelude::*;
use std::io::{self, Write};
use crate::config::Config;
use crate::context::Context;
use crate::module::Module;
use crate::module::ALL_MODULES;
use crate::modules;
// List of default prompt order
// NOTE: If this const value is changed then Default prompt order subheading inside
// prompt heading of config docs needs to be updated according to changes made here.
const DEFAULT_PROMPT_ORDER: &[&str] = &[
"username",
"hostname",
"directory",
"git_branch",
"git_state",
"git_status",
"package",
"nodejs",
"ruby",
"rust",
"python",
"golang",
"nix_shell",
"cmd_duration",
"line_break",
"jobs",
#[cfg(feature = "battery")]
"time",
"character",
];
pub fn prompt(args: ArgMatches) {
let context = Context::new(args);
let config = &context.config;
let stdout = io::stdout();
let mut handle = stdout.lock();
// Write a new line before the prompt
if config.get_as_bool("add_newline") != Some(false) {
writeln!(handle).unwrap();
}
let mut prompt_order: Vec<&str> = Vec::new();
// Write out a custom prompt order
if let Some(modules) = config.get_as_array("prompt_order") {
// if prompt_order = [] use default_prompt_order
if !modules.is_empty() {
for module in modules {
let str_value = module.as_str();
if let Some(value) = str_value {
if ALL_MODULES.contains(&value) {
prompt_order.push(value);
} else {
log::debug!(
"Expected prompt_order to contain value from {:?}. Instead received {}",
ALL_MODULES,
value,
);
}
} else {
log::debug!(
"Expected prompt_order to be an array of strings. Instead received {} of type {}",
module,
module.type_str()
);
}
}
} else {
prompt_order = DEFAULT_PROMPT_ORDER.to_vec();
}
} else {
prompt_order = DEFAULT_PROMPT_ORDER.to_vec();
}
let modules = &prompt_order
.par_iter()
.filter(|module| context.is_module_enabled(module))
.map(|module| modules::handle(module, &context)) // Compute modules
.flatten()
.collect::<Vec<Module>>(); // Remove segments set to `None`
let mut printable = modules.iter();
// Print the first module without its prefix
if let Some(first_module) = printable.next() {
let module_without_prefix = first_module.to_string_without_prefix();
write!(handle, "{}", module_without_prefix).unwrap()
}
// Print all remaining modules
printable.for_each(|module| write!(handle, "{}", module).unwrap());
}
pub fn module(module_name: &str, args: ArgMatches) {
let context = Context::new(args);
// If the module returns `None`, print an empty string
let module = modules::handle(module_name, &context)
.map(|m| m.to_string())
.unwrap_or_default();
print!("{}", module);
}
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