impl except test

src/archive/mod.rs

@@ -1,5 +1,6 @@
 //! Archive compression algorithms
 
 pub mod rar;
+pub mod sevenz;
 pub mod tar;
 pub mod zip;

src/archive/sevenz.rs

@@ -0,0 +1,40 @@
+//! SevenZip archive format compress function
+use std::{
+    env::current_dir,
+    path::{Path, PathBuf},
+};
+
+pub fn compress_sevenz(files: Vec<PathBuf>, output_path: &Path) -> crate::Result<bool> {
+    let mut writer = sevenz_rust::SevenZWriter::create(output_path).map_err(crate::Error::SevenzipError)?;
+
+    for filep in files.iter() {
+        writer
+            .push_archive_entry::<std::fs::File>(
+                sevenz_rust::SevenZWriter::<std::fs::File>::create_archive_entry(
+                    filep,
+                    filep
+                        .strip_prefix(current_dir()?)
+                        .expect("StripPrefix Failed")
+                        .as_os_str()
+                        .to_str()
+                        .unwrap()
+                        .to_string(),
+                ),
+                None,
+            )
+            .map_err(crate::Error::SevenzipError)?;
+    }
+
+    writer.finish()?;
+    Ok(true)
+}
+
+pub fn decompress_sevenz(input_file_path: &Path, output_path: &Path) -> crate::Result<usize> {
+    let mut count: usize = 0;
+    sevenz_rust::decompress_file_with_extract_fn(input_file_path, output_path, |entry, reader, dest| {
+        count += 1;
+        sevenz_rust::default_entry_extract_fn(entry, reader, dest)
+    })
+    .map_err(crate::Error::SevenzipError)?;
+    Ok(count)
+}

src/commands/compress.rs

@@ -1,5 +1,4 @@
 use std::{
-    env::current_dir,
     io::{self, BufWriter, Cursor, Seek, Write},
     path::{Path, PathBuf},
 };
@@ -128,28 +127,7 @@ pub fn compress_files(
             return Ok(false);
         },
         SevenZip => {
-            let mut writer =
-                sevenz_rust::SevenZWriter::create(output_path).map_err(|e| crate::Error::SevenzipError(e))?;
-
-            for filep in files.iter() {
-                writer
-                    .push_archive_entry::<std::fs::File>(
-                        sevenz_rust::SevenZWriter::<std::fs::File>::create_archive_entry(
-                            filep,
-                            filep
-                                .strip_prefix(current_dir()?)
-                                .expect("StripPrefix Failed")
-                                .as_os_str()
-                                .to_str()
-                                .unwrap()
-                                .to_string(),
-                        ),
-                        None,
-                    )
-                    .map_err(|e| crate::Error::SevenzipError(e))?;
-            }
-
-            writer.finish()?;
+            archive::sevenz::compress_sevenz(files, output_path)?;
         }
     }
 

src/commands/decompress.rs

@@ -165,14 +165,16 @@ pub fn decompress_file(
             }
         },
         SevenZip => {
-            let mut count = 0;
-            sevenz_rust::decompress_file_with_extract_fn(input_file_path, output_dir, 
-            |entry, reader, dest| {
-                count += 1;
-                sevenz_rust::default_entry_extract_fn(entry, reader, dest)
+            if let ControlFlow::Continue(files) = smart_unpack(
+                |output_dir| crate::archive::sevenz::decompress_sevenz(input_file_path, output_dir),
+                output_dir,
+                &output_file_path,
+                question_policy,
+            )? {
+                files
+            } else {
+                return Ok(());
             }
-            ).map_err(|x| crate::Error::SevenzipError(x))?;
-            count
         }
     };
 

src/commands/list.rs

@@ -88,6 +88,13 @@ pub fn list_archive_contents(
             }
         },
         SevenZip => {
+            if formats.len() > 1 {
+                warn_user_about_loading_zip_in_memory();
+                if !user_wants_to_continue(archive_path, question_policy, QuestionAction::Decompression)? {
+                    return Ok(());
+                }
+            }
+
             let mut a = Vec::new();
 
             sevenz_rust::decompress_file_with_extract_fn(archive_path, ".", |entry, _, _| {
@@ -97,7 +104,7 @@ pub fn list_archive_contents(
                 }));
                 Ok(true)
             })
-            .map_err(|e| crate::Error::SevenzipError(e))?;
+            .map_err(crate::Error::SevenzipError)?;
             Box::new(a.into_iter())
         }
         Gzip | Bzip | Lz4 | Lzma | Snappy | Zstd => {

src/utils/fs.rs

@@ -91,6 +91,9 @@ pub fn try_infer_extension(path: &Path) -> Option<Extension> {
             && buf.starts_with(&[0x52, 0x61, 0x72, 0x21, 0x1A, 0x07])
             && (buf[6] == 0x00 || (buf.len() >= 8 && buf[6..=7] == [0x01, 0x00]))
     }
+    fn is_sevenz(buf: &[u8]) -> bool {
+        buf.starts_with(&[0x37, 0x7A, 0xBC, 0xAF, 0x27, 0x1C])
+    }
 
     let buf = {
         let mut buf = [0; 270];
@@ -124,6 +127,8 @@ pub fn try_infer_extension(path: &Path) -> Option<Extension> {
         Some(Extension::new(&[Zstd], "zst"))
     } else if is_rar(&buf) {
         Some(Extension::new(&[Rar], "rar"))
+    } else if is_sevenz(&buf) {
+        Some(Extension::new(&[SevenZip], "7z"))
     } else {
         None
     }