4 changed files with 325 additions and 0 deletions
@ -0,0 +1,211 @@
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# It is not intended for manual editing. |
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@ -0,0 +1,11 @@
|
||||
[package] |
||||
name = "globtest" |
||||
version = "0.1.0" |
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edition = "2021" |
||||
|
||||
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html |
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|
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[dependencies] |
||||
async-recursion = "1.0.5" |
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regex = "1.9.5" |
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tokio = { version = "1.32.0", features = ["rt", "macros", "fs"] } |
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@ -0,0 +1,3 @@
|
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# GlobTest |
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|
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Testing making some simple `cp` using Tokio, with wildcard expansion (not actual globs, but close). |
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@ -0,0 +1,100 @@
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use std::path::{Path, PathBuf}; |
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|
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use regex::Regex; |
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|
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#[tokio::main(flavor = "current_thread")] |
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async fn main() { |
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let mut args = std::env::args(); |
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args.next(); // jump the command name.
|
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|
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let source = PathBuf::from(args.next().expect("I want a place to copy from!")); |
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let target = PathBuf::from(args.next().expect("I want a place to copy to!")); |
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|
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println!("From {source:?} to {target:?}"); |
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|
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match (source.is_file(), source.is_dir()) { |
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(true, true) => { |
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println!("NO, WAIT! HOW THE THING IS A FILE AND DIR AT THE SAME TIME?!?!"); |
||||
} |
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(true, false) => { |
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println!("Source is file"); |
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copy_file(&source, &target).await; |
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} |
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(false, true) => { |
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println!("Source is a whole directory"); |
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copy_dir(&source, &target).await; |
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} |
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(false, false) => { |
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println!("Source is not a file or a directory"); |
||||
copy_magic(&source, &target).await |
||||
} |
||||
} |
||||
} |
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|
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/// Magical copy
|
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async fn copy_magic(source: &Path, target: &Path) { |
||||
if let Some(name) = source.file_name() { |
||||
if name.to_str().unwrap().contains('*') { |
||||
copy_mask(source, target).await; |
||||
} else { |
||||
println!("Source is not a file, not a dir and it doesn't have a mask."); |
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println!("I think you're nuts"); |
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} |
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} |
||||
} |
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|
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async fn copy_mask(source: &Path, target: &Path) { |
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let mask = source.file_name().unwrap(); |
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let source = source.parent().unwrap(); |
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let re = Regex::new(&mask.to_str().unwrap().replace("*", ".*")).unwrap(); |
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|
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let mut reader = tokio::fs::read_dir(&source).await.unwrap(); |
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while let Ok(Some(entry)) = reader.next_entry().await { |
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let entry = entry.path(); |
||||
if entry.is_file() { |
||||
if let Some(name) = entry.file_name() { |
||||
// does the name match the mask?
|
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if re.is_match(name.to_str().unwrap()) { |
||||
copy_file(&source.join(name), target).await; |
||||
} |
||||
} |
||||
} |
||||
} |
||||
} |
||||
|
||||
/// Make a copy of a directory
|
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#[async_recursion::async_recursion] |
||||
async fn copy_dir(source: &Path, target: &Path) { |
||||
if !target.is_dir() { |
||||
println!("Can't copy a whole directory to something that it is NOT a directory!"); |
||||
return; |
||||
} |
||||
|
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let mut reader = tokio::fs::read_dir(&source).await.unwrap(); |
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while let Ok(Some(entry)) = reader.next_entry().await { |
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let entry = entry.path(); |
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if entry.is_file() { |
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copy_file(&entry, &target).await; |
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} else { |
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let name = entry.file_name().unwrap(); |
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let target = target.join(name); |
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tokio::fs::create_dir_all(&target).await.unwrap(); |
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copy_dir(&entry, &target).await; |
||||
} |
||||
} |
||||
} |
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|
||||
/// Make a copy of a file.
|
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async fn copy_file(source: &Path, target: &Path) { |
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if target.is_dir() { |
||||
println!("Copying to a directory"); |
||||
let filename = source.file_name().unwrap(); // after all, it IS a file
|
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let target = target.join(filename); |
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println!("Copying from {:?} to {:?}", source, target); |
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tokio::fs::copy(source, target).await.unwrap(); |
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} else { |
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println!("Assuming the destination is already the filename"); |
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println!("Copying from {:?} to {:?}", source, target); |
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tokio::fs::copy(source, target).await.unwrap(); |
||||
} |
||||
} |
||||
Loading…
Reference in new issue