use dprint_cli_core::download_url;
use dprint_cli_core::logging::{log_action_with_progress, show_confirm, show_multi_select, show_select, Logger, ProgressBars};
use dprint_core::types::ErrBox;
use std::fs;
use std::path::{Path, PathBuf};
use std::time::SystemTime;
use super::{DirEntry, DirEntryKind, Environment};
use crate::plugins::CompilationResult;
#[derive(Clone)]
pub struct RealEnvironment {
logger: Logger,
progress_bars: Option<ProgressBars>,
is_verbose: bool,
}
impl RealEnvironment {
pub fn new(is_verbose: bool, is_silent: bool) -> Result<RealEnvironment, ErrBox> {
let logger = Logger::new("dprint", is_silent);
let progress_bars = if is_silent { None } else { ProgressBars::new(&logger) };
let environment = RealEnvironment {
logger,
progress_bars,
is_verbose,
};
if let Err(err) = environment.mk_dir_all(&get_cache_dir()?) {
return err!("Error creating cache directory: {:?}", err);
}
Ok(environment)
}
}
impl Environment for RealEnvironment {
fn is_real(&self) -> bool {
true
}
fn read_file(&self, file_path: impl AsRef<Path>) -> Result<String, ErrBox> {
Ok(String::from_utf8(self.read_file_bytes(file_path)?)?)
}
fn read_file_bytes(&self, file_path: impl AsRef<Path>) -> Result<Vec<u8>, ErrBox> {
log_verbose!(self, "Reading file: {}", file_path.as_ref().display());
match fs::read(&file_path) {
Ok(bytes) => Ok(bytes),
Err(err) => err!("Error reading file {}: {}", file_path.as_ref().display(), err.to_string()),
}
}
fn write_file(&self, file_path: impl AsRef<Path>, file_text: &str) -> Result<(), ErrBox> {
self.write_file_bytes(file_path, file_text.as_bytes())
}
fn write_file_bytes(&self, file_path: impl AsRef<Path>, bytes: &[u8]) -> Result<(), ErrBox> {
log_verbose!(self, "Writing file: {}", file_path.as_ref().display());
match fs::write(&file_path, bytes) {
Ok(_) => Ok(()),
Err(err) => err!("Error writing file {}: {}", file_path.as_ref().display(), err.to_string()),
}
}
fn remove_file(&self, file_path: impl AsRef<Path>) -> Result<(), ErrBox> {
log_verbose!(self, "Deleting file: {}", file_path.as_ref().display());
match fs::remove_file(&file_path) {
Ok(_) => Ok(()),
Err(err) if err.kind() == std::io::ErrorKind::NotFound => Ok(()),
Err(err) => err!("Error deleting file {}: {}", file_path.as_ref().display(), err.to_string()),
}
}
fn remove_dir_all(&self, dir_path: impl AsRef<Path>) -> Result<(), ErrBox> {
log_verbose!(self, "Deleting directory: {}", dir_path.as_ref().display());
match fs::remove_dir_all(&dir_path) {
Ok(_) => Ok(()),
Err(err) if err.kind() == std::io::ErrorKind::NotFound => Ok(()),
Err(err) => err!("Error removing directory {}: {}", dir_path.as_ref().display(), err.to_string()),
}
}
fn download_file(&self, url: &str) -> Result<Vec<u8>, ErrBox> {
log_verbose!(self, "Downloading url: {}", url);
download_url(url, &self.progress_bars, |env_var_name| std::env::var(env_var_name).ok())
}
fn dir_info(&self, dir_path: impl AsRef<Path>) -> Result<Vec<DirEntry>, ErrBox> {
let mut entries = Vec::new();
let dir_info = match std::fs::read_dir(&dir_path) {
Ok(result) => result,
Err(err) => {
if is_system_volume_error(dir_path.as_ref(), &err) {
return Ok(Vec::with_capacity(0));
} else {
return Err(Box::new(err));
}
}
};
for entry in dir_info {
let entry = entry?;
let file_type = entry.file_type()?;
if file_type.is_dir() {
entries.push(DirEntry {
kind: DirEntryKind::Directory,
path: entry.path().to_path_buf(),
});
} else if file_type.is_file() {
entries.push(DirEntry {
kind: DirEntryKind::File,
path: entry.path().to_path_buf(),
});
}
}
Ok(entries)
}
fn path_exists(&self, file_path: impl AsRef<Path>) -> bool {
log_verbose!(self, "Checking path exists: {}", file_path.as_ref().display());
file_path.as_ref().exists()
}
fn canonicalize(&self, path: impl AsRef<Path>) -> Result<PathBuf, ErrBox> {
Ok(dunce::canonicalize(path)?)
}
fn is_absolute_path(&self, path: impl AsRef<Path>) -> bool {
path.as_ref().is_absolute()
}
fn mk_dir_all(&self, path: impl AsRef<Path>) -> Result<(), ErrBox> {
log_verbose!(self, "Creating directory: {}", path.as_ref().display());
match fs::create_dir_all(&path) {
Ok(_) => Ok(()),
Err(err) => err!("Error creating directory {}: {}", path.as_ref().display(), err.to_string()),
}
}
fn cwd(&self) -> PathBuf {
std::env::current_dir().expect("Expected to get the current working directory.")
}
fn log(&self, text: &str) {
self.logger.log(text, "dprint");
}
fn log_silent(&self, text: &str) {
self.logger.log_bypass_silent(text, "dprint");
}
fn log_stderr_with_context(&self, text: &str, context_name: &str) {
self.logger.log_err(text, context_name);
}
fn log_action_with_progress<
TResult: std::marker::Send + std::marker::Sync,
TCreate: FnOnce(Box<dyn Fn(usize)>) -> TResult + std::marker::Send + std::marker::Sync,
>(
&self,
message: &str,
action: TCreate,
total_size: usize,
) -> TResult {
log_action_with_progress(&self.progress_bars, message, action, total_size)
}
fn get_cache_dir(&self) -> PathBuf {
get_cache_dir().unwrap()
}
fn get_time_secs(&self) -> u64 {
SystemTime::now().duration_since(std::time::SystemTime::UNIX_EPOCH).unwrap().as_secs()
}
fn get_selection(&self, prompt_message: &str, item_indent_width: u16, items: &Vec<String>) -> Result<usize, ErrBox> {
show_select(&self.logger, "dprint", prompt_message, item_indent_width, items)
}
fn get_multi_selection(&self, prompt_message: &str, item_indent_width: u16, items: &Vec<(bool, String)>) -> Result<Vec<usize>, ErrBox> {
show_multi_select(
&self.logger,
"dprint",
prompt_message,
item_indent_width,
items.iter().map(|(value, text)| (value.to_owned(), text)).collect(),
)
}
fn confirm(&self, prompt_message: &str, default_value: bool) -> Result<bool, ErrBox> {
show_confirm(&self.logger, "dprint", prompt_message, default_value)
}
fn get_terminal_width(&self) -> u16 {
dprint_cli_core::terminal::get_terminal_width().unwrap_or(60)
}
#[inline]
fn is_verbose(&self) -> bool {
self.is_verbose
}
fn compile_wasm(&self, wasm_bytes: &[u8]) -> Result<CompilationResult, ErrBox> {
crate::plugins::compile_wasm(wasm_bytes)
}
fn stdout(&self) -> Box<dyn std::io::Write + Send> {
Box::new(std::io::stdout())
}
fn stdin(&self) -> Box<dyn std::io::Read + Send> {
Box::new(std::io::stdin())
}
#[cfg(windows)]
fn ensure_system_path(&self, directory_path: &str) -> Result<(), ErrBox> {
use winreg::{enums::*, RegKey};
log_verbose!(self, "Ensuring '{}' is on the path.", directory_path);
let hkcu = RegKey::predef(HKEY_CURRENT_USER);
let (env, _) = hkcu.create_subkey("Environment")?;
let mut path: String = env.get_value("Path")?;
if !path.split(";").any(|p| p == directory_path) {
if !path.is_empty() && !path.ends_with(';') {
path.push_str(";")
}
path.push_str(&directory_path);
env.set_value("Path", &path)?;
}
Ok(())
}
#[cfg(windows)]
fn remove_system_path(&self, directory_path: &str) -> Result<(), ErrBox> {
use winreg::{enums::*, RegKey};
log_verbose!(self, "Ensuring '{}' is on the path.", directory_path);
let hkcu = RegKey::predef(HKEY_CURRENT_USER);
let (env, _) = hkcu.create_subkey("Environment")?;
let path: String = env.get_value("Path")?;
let mut paths = path.split(";").collect::<Vec<_>>();
let original_len = paths.len();
paths.retain(|p| p != &directory_path);
let was_removed = original_len != paths.len();
if was_removed {
env.set_value("Path", &paths.join(";"))?;
}
Ok(())
}
}
const CACHE_DIR_ENV_VAR_NAME: &str = "DPRINT_CACHE_DIR";
fn get_cache_dir() -> Result<PathBuf, ErrBox> {
get_cache_dir_internal(|var_name| std::env::var(var_name).ok())
}
fn get_cache_dir_internal(get_env_var: impl Fn(&str) -> Option<String>) -> Result<PathBuf, ErrBox> {
if let Some(dir_path) = get_env_var(CACHE_DIR_ENV_VAR_NAME) {
if !dir_path.trim().is_empty() {
let dir_path = PathBuf::from(dir_path);
return if !dir_path.is_absolute() {
err!("The {} environment variable must specify an absolute path.", CACHE_DIR_ENV_VAR_NAME)
} else {
Ok(dir_path)
};
}
}
match dirs::cache_dir() {
Some(dir) => Ok(dir.join("dprint").join("cache")),
None => err!("Expected to find cache directory"),
}
}
fn is_system_volume_error(dir_path: &Path, err: &std::io::Error) -> bool {
cfg!(target_os = "windows")
&& matches!(err.raw_os_error(), Some(5))
&& matches!(dir_path.file_name().map(|f| f.to_str()).flatten(), Some("System Volume Information"))
}
#[cfg(test)]
mod test {
use super::*;
#[test]
fn should_get_cache_dir_based_on_env_var() {
let default_dir = dirs::cache_dir().unwrap().join("dprint").join("cache");
let value = if cfg!(target_os = "windows") {
"C:/.dprint-cache"
} else {
"/home/david/.dprint-cache"
};
assert_eq!(get_cache_dir_internal(|_| Some(value.to_string())).unwrap().to_string_lossy(), value);
assert_eq!(get_cache_dir_internal(|_| Some("".to_string())).unwrap(), default_dir);
assert_eq!(get_cache_dir_internal(|_| Some(" ".to_string())).unwrap(), default_dir);
assert_eq!(get_cache_dir_internal(|_| None).unwrap(), default_dir);
}
#[test]
fn should_error_when_cache_dir_env_var_relative() {
let result = get_cache_dir_internal(|_| Some("./dir".to_string())).err();
assert_eq!(
result.unwrap().to_string(),
"The DPRINT_CACHE_DIR environment variable must specify an absolute path."
);
}
}