Hi.
Next part of the migration from Java to rust 
Is it the rust way to use File glob via crates.io: Rust Package Registry or globset crates.io: Rust Package Registry or an directory iterator and a filter/match combo as shown in Directory Traversal - Rust Cookbook ?
I now need to collect all files in a log directory based on the file glob. The issue is the {...} pattern which is not supported by glob as described in this issue Several file extension pattern · Issue #163 · rust-lang/glob · GitHub . I thought that globset could help here. 
The globs
/log71761/{2025-03,2025-04,2025-05,2025-06,2025-07,2025-08,2025-09,2025-10}.{gz,log}
and
/log71771/{2025-03,2025-04,2025-05,2025-06,2025-07,2025-08,2025-09,2025-10}.{gz,log}
DIRECTORY1=/log71761 \
DIRECTORY2=/log71771 \
DEST_FILE=lala.csv \
cargo run
use glob::glob;
use globset::GlobBuilder;
use jiff::{ToSpan, Zoned, fmt::strtime};
use std::{
env,
path::{Path, PathBuf, MAIN_SEPARATOR_STR},
process::exit,
str::FromStr,
};
const PATH1: &str = "/log/76/";
const PATH2: &str = "/log/77/";
fn main() {
println!("Hello, world!");
let path1 = env::var("DIRECTORY1").unwrap_or(PATH1.to_string());
let path2 = env::var("DIRECTORY2").unwrap_or(PATH2.to_string());
let _dest_file = env::var("DEST_FILE").unwrap_or(DEST_FILE.to_string());
//create_dir_glob creates the file glob
println!(
"dir files: {:#?}",
get_log_file_names(&[path1, path2], create_dir_glob())
);
}
fn get_log_file_names(paths: &[String], glob_pattern: String) -> Vec::<PathBuf> {
let mut all_files= Vec::<PathBuf>::new();
// Iterate over given Paths and collect all files in the directory
// based on glob pattern
for path in paths {
println!("My path :{:#?}:", path);
println!("glob_pattern :{:#?}:", glob_pattern);
// combine the given directory with file glob
let mut full_path = String::from(path);
full_path.push_str(MAIN_SEPARATOR_STR);
full_path.push_str(&glob_pattern);
// here is now my issue. globset || glob || filter?
println!("full_path :{:#?}:", full_path);
let mut glob = GlobBuilder::new(&full_path);
glob.literal_separator(true);
let my_glob = match glob.build() {
Ok(new_glob) => {
println!("new_glob :{}:", new_glob);
new_glob
}
Err(e_glob) => {
println!("Error at glob: {:#?}", e_glob.to_string());
exit(-2);
}
};
println!("glob :{:?}:", my_glob);
//for entry in glob(&full_path) {
/* for entry in match glob(&full_path) {
Ok(my_entry) => {
println!("my_entry :{:?}", my_entry);
my_entry
}
Err(e_glob) => {
println!("Error at glob: {:#?}", e_glob.to_string());
exit(-2);
}
} { */
//println!("entry :{:#?}", entry);
// add file entry to the all_files Vector
// all_files
//}
}
//"".to_string()
all_files
}
fn create_dir_glob() -> String {
let mut to_glob_files = match String::from_str("*{") {
Ok(new_str) => new_str,
Err(e) => {
println!("Error at String::from_str error: {:#?}", e.to_string());
exit(-1);
}
};
let start: Zoned = Zoned::now();
let start_minus_n_months = match start.checked_sub(7.months()) {
Ok(new_months) => new_months,
Err(e_mon) => {
println!(
"Error at checked_sub_months error: {:#?}",
e_mon.to_string()
);
exit(-2);
}
};
let it = start_minus_n_months
.datetime()
.series(1.month())
.filter_map(|dt| dt.to_zoned(start.time_zone().clone()).ok())
.take_while(|zdt| zdt <= start);
for zdt in it {
let temp = match strtime::format("%Y-%m,", &zdt) {
Ok(new_temp) => new_temp,
Err(e_format) => {
println!(
"Error at strtime::format error: {:#?}",
e_format.to_string()
);
exit(-2);
}
};
to_glob_files.push_str(&temp);
//println!("* {}", zdt.strftime("%Y-%m"));
}
// println!("capa: {}", to_glob_files.capacity());
// println!("len: {}", to_glob_files.len());
// Remove last ',' from the loop above
to_glob_files.truncate(to_glob_files.len() - 1);
// println!("len after -1: {}", to_glob_files.len());
to_glob_files.push_str("}*.{gz,log}");
//println!("to glob: '{}'", to_glob_files);
to_glob_files
}
Thanks for reading and help.