add xz support

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "fqkit"
-version = "0.3.8"
+version = "0.3.9"
 edition = "2021"
 authors = ["sharkLoc <[email protected]>"]
 rust-version = "1.65.0"
@@ -31,3 +31,4 @@ regex = "1.9.5"
 rgb = "0.8.36"
 term_size = "0.3.2"
 textplots = "0.8.4"
+xz2 = "0.1.7"

README.md

@@ -40,19 +40,20 @@ cargo install --git https://github.com/sharkLoc/fqkit.git
 ```bash
 FqKit -- A simple and cross-platform program for fastq file manipulation
 
-Version: 0.3.8
+Version: 0.3.9
 
 Authors: sharkLoc <[email protected]>
 Source code: https://github.com/sharkLoc/fqkit.git
 
 Fqkit supports reading and writing gzip (.gz) format.
-Bzip2 format is supported since v0.3.8
+Bzip2 (.bz2) format is supported since v0.3.8.
+Xz (.xz) format is supported since v0.3.9.
 
 Compression level:
   format   range   default   crate
   gzip     1-9     6         https://crates.io/crates/flate2
   bzip     1-9     6         https://crates.io/crates/bzip2
-
+  xz       1-9     6         https://crates.io/crates/xz2
 
 Usage: fqkit [OPTIONS] <COMMAND>
 

src/barcode.rs

@@ -96,6 +96,7 @@ pub fn split_fq(
     outdir: &str,
     gzip: bool,
     bzip2: bool,
+    xz: bool,
     compression_level: u32,
 ) -> Result<()> {
     let start = Instant::now();
@@ -111,8 +112,11 @@ pub fn split_fq(
     if bzip2 {
         n += 1;
     }
+    if xz {
+        n += 1;
+    }
     if n > 1 {
-        error!("only one of the flags --gzip and --bzip2 is allowed");
+        error!("only one of the flags --gzip, --xz and --bzip2 is allowed");
         std::process::exit(1);
     }
 
@@ -128,20 +132,26 @@ pub fn split_fq(
                 format!("{}/{}_1.fq.gz", outdir, name) 
             } else if bzip2 { 
                 format!("{}/{}_1.fq.bz2", outdir, name)
+            } else if xz {
+                format!("{}/{}_1.fq.xz", outdir, name)
             } else {
                 format!("{}/{}_1.fq", outdir, name)
             };
             let fq2 = if gzip {
                 format!("{}/{}_2.fq.gz", outdir, name)
             } else if bzip2 {
                 format!("{}/{}_2.fq.bz2", outdir, name)
+            } else if xz {
+                format!("{}/{}_2.fq.xz", outdir, name)
             } else {
                 format!("{}/{}_2.fq", outdir, name)
             };
             let bar = if gzip {
                 format!("{}/{}_barcode.fq.gz", outdir, name)
             } else if bzip2 {
                 format!("{}/{}_barcode.fq.bz2", outdir, name)
+            } else if xz {
+                format!("{}/{}_barcode.fq.xz", outdir, name)
             } else {
                 format!("{}/{}_barcode.fq", outdir, name)
             };