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std::path::{Path}; +use walkdir::{WalkDir, DirEntry}; +use smartstring::alias::String; +use structopt::StructOpt; +use std::fs::File; +use std::io; +use std::io::Read; +use mime_guess; +use xdg_mime::SharedMimeInfo; +use mime_guess::Mime; + +// TODO: test if this actually works on a windows machine +#[cfg(windows)] +fn is_hidden(entry: &DirEntry) -> bool { + use std::os::windows::prelude::*; + use std::fs; + fs::metadata(entry) // try to get metadata for file + .map_or( + false, // if getting metadata/attributes fails, assume it's not hidden + |f| f.file_attributes() & 0x2 // flag for hidden - https://docs.microsoft.com/en-us/windows/win32/fileio/file-attribute-constants + ) +} + +#[cfg(not(windows))] +fn is_hidden(entry: &DirEntry) -> bool { + entry.file_name().to_str().map_or(false, |f| f.starts_with(".")) +} + +fn ext_match(args: ¶meters::Parameters, entry: &DirEntry) -> bool { + if entry.file_type().is_dir() { + return true; + } + + if !args.scan_hidden && is_hidden(entry) { + return false; + } + + let path = Path::new(entry.file_name()); + + if let Some(extensions) = &args.extensions { + return match path.extension() { + None => true, + Some(ext) => { + extensions.contains(&ext.to_string_lossy().into()) + } + } + } + false +} + +fn mime_type(db: &SharedMimeInfo, filepath: &Path) -> io::Result, > { + let mut buffer = [0; 1024]; + // attempt to read up to the first kilobyte of the file + let mut file = File::open(filepath)?; + + file.read(&mut buffer)?; + + Ok(db.get_mime_type_for_data(&buffer).map(|m| m.0)) +} + +fn get_ext_from_mime(mime: &Mime) -> Option { + match mime_guess::get_mime_extensions(mime) // get a list of possible extensions for this mime type + .map(|g| g[0]) { // take the first option in the list and return it as a string + // jpeg files are given the primary extension "jpe", due to the extension list being stored in alphabetical order. + // to handle this particular case, swap "jpe" out for "jpg", and leave everything else the same, making sure we + // convert the &strs to Strings. + Some("jpe") => Some(String::from("jpg")), + Some(ext) => Some(String::from(ext)), + None => None + } +} + +fn main() { + let args = parameters::Parameters::from_args(); + let db = xdg_mime::SharedMimeInfo::new(); + println!("{:#?}", args); + // println!("{:#?}", args.dirs); + println!("=====\nIterating directory: {:?}\n=====", args.dirs); + + let stepper = WalkDir::new(&args.dirs).into_iter(); + for entry in stepper.filter_entry(|e| ext_match(&args, e)) { + let entry = entry.unwrap(); + if !entry.file_type().is_file() { + println!("{} is not a file", entry.path().display()); + continue + } + + // let result = tree_magic_mini::from_filepath(entry.path()).unwrap_or("???"); + let result = mime_type(&db, entry.path()).unwrap().unwrap(); + println!( + "{} has type {}, extension should be {:?}", + entry.path().display(), + result, + get_ext_from_mime(&result) + ); + } + + // println!("WEBP CHECK: {:#?}", tree_magic_mini::match_filepath( + // "image/webp", + // Path::new("imgs/true_webp_lossless.webp")) + // ); +} diff --git a/src/parameters.rs b/src/parameters.rs new file mode 100644 index 0000000..28c1877 --- /dev/null +++ b/src/parameters.rs @@ -0,0 +1,19 @@ +use structopt::StructOpt; +use std::path::PathBuf; +use smartstring::alias::String; + +#[derive(StructOpt, Debug)] +pub struct Parameters { + /// Only examine files with these extensions (Comma-separated list) + #[structopt(short, long, use_delimiter = true)] + pub extensions: Option>, + + /// Don't skip hidden files and directories + #[structopt(short, long)] + pub scan_hidden: bool, + + /// Directories to process + #[structopt(name = "DIRS", default_value = ".", parse(from_os_str))] + // dirs: PathBuf + pub dirs: PathBuf, +}