128 lines
3.2 KiB
Rust
128 lines
3.2 KiB
Rust
use std::path::{PathBuf,Path};
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use std::fs;
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use std::os::unix::fs::MetadataExt;
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use std::ffi::OsString;
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#[derive(Debug)]
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pub enum DbError {
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EntryNotFound(String)
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}
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#[derive(Debug, Clone)]
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pub struct Entry {
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pub name: OsString,
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pub path: PathBuf,
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pub base_dir: PathBuf,
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}
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impl Entry {
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pub fn new(path: PathBuf, name: OsString, base_dir: PathBuf) -> Entry {
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Entry {
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path,
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name,
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base_dir,
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}
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}
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pub fn read_setting(&self, setting: &str) -> Option<String> {
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let mut path = self.path.clone();
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path.set_extension(setting);
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read_or_none(&path)
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}
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}
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pub fn from(path_name: &str, filter: impl Fn(&Path) -> bool) -> Result<Vec<Entry>, std::io::Error> {
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let path = PathBuf::from(&path_name);
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let mut entries = Vec::new();
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for file in path.read_dir()? {
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if file.is_err() {
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// Dismiss individual errors (in case there's a permission problem)
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// TODO: maybe print a warning? Actually a configurable error level
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// (using enum variants) should be passed to the function to configure
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// whether to continue silently or error out for individual files
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continue;
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}
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let entry = file?.path();
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if filter(&entry) {
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entries.push(
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Entry::new(
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entry.clone(),
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entry.file_name().expect("Failed to read file name").to_os_string(),
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path.clone()
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)
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);
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}
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}
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return Ok(entries);
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}
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/// Reads the file and strips whitespace (including newlines)
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/// Useful for file-based key-value store
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pub fn read_or_none(path: &Path) -> Option<String> {
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if !path.is_file() {
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return None;
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}
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match fs::read_to_string(path) {
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Ok(content) => {
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// Remove trailing space/newlines
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Some(content.trim().to_string())
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},
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Err(e) => {
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eprintln!("IO ERROR: {}", e);
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None
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}
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}
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}
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fn list_files(path: &Path) -> Vec<PathBuf> {
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let mut res = Vec::new();
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match fs::read_dir(path) {
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Ok(files) => {
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for r in files {
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match r {
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Ok(entry) => {
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let file = entry.path();
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if file.is_file() {
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res.push(file);
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}
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},
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Err(e) => {
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eprintln!("IOERROR: {}", e)
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}
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}
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}
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},
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Err(e) => {
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eprintln!("IOERROR: {}", e);
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}
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}
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return res;
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}
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// If the file doesn't exist or fails, return false
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pub fn is_executable(path: &Path) -> bool {
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// Do not match directories
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if !path.is_file() {
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return false;
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}
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match fs::metadata(path) {
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Ok(stat) => {
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let mode = stat.mode();
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// Check user exec permission)
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if (mode & 0o100) == 0o100 {
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true
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} else {
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false
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}
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},
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Err(e) => {
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eprintln!("IO Error: {}", e);
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false
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}
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}
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}
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