From d3deecfb4575ea6c8a3d12867e2311fe951f034f Mon Sep 17 00:00:00 2001
From: Austen Adler <agadler@austenadler.com>
Date: Wed, 15 Nov 2023 22:48:20 -0500
Subject: [PATCH] Add basic tar support

---
 Cargo.lock                                    | 216 ++++++++++++++++++
 Cargo.toml                                    |   7 +-
 .../sample-ncdu-output.json                   |   0
 ncdufmt/src/lib.rs                            |   5 +-
 src/main.rs                                   |   2 +
 src/tar.rs                                    |  54 +++++
 src/types.rs                                  |   7 +
 test-tar.tar                                  | Bin 0 -> 40960 bytes
 8 files changed, 284 insertions(+), 7 deletions(-)
 rename sample-ncdu-output.json => ncdufmt/sample-ncdu-output.json (100%)
 create mode 100644 src/tar.rs
 create mode 100644 src/types.rs
 create mode 100644 test-tar.tar

diff --git a/Cargo.lock b/Cargo.lock
index cd7b7c4..fc18a40 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2,11 +2,20 @@
 # It is not intended for manual editing.
 version = 3
 
+[[package]]
+name = "anyhow"
+version = "1.0.75"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a4668cab20f66d8d020e1fbc0ebe47217433c1b6c8f2040faf858554e394ace6"
+
 [[package]]
 name = "arncdu"
 version = "0.1.0"
 dependencies = [
+ "anyhow",
+ "crossbeam",
  "ncdufmt",
+ "tar",
 ]
 
 [[package]]
@@ -15,12 +24,118 @@ version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d468802bab17cbc0cc575e9b053f41e72aa36bfa6b7f55e3529ffa43161b97fa"
 
+[[package]]
+name = "bitflags"
+version = "1.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
+
+[[package]]
+name = "cfg-if"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
+
+[[package]]
+name = "crossbeam"
+version = "0.8.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2801af0d36612ae591caa9568261fddce32ce6e08a7275ea334a06a4ad021a2c"
+dependencies = [
+ "cfg-if",
+ "crossbeam-channel",
+ "crossbeam-deque",
+ "crossbeam-epoch",
+ "crossbeam-queue",
+ "crossbeam-utils",
+]
+
+[[package]]
+name = "crossbeam-channel"
+version = "0.5.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a33c2bf77f2df06183c3aa30d1e96c0695a313d4f9c453cc3762a6db39f99200"
+dependencies = [
+ "cfg-if",
+ "crossbeam-utils",
+]
+
+[[package]]
+name = "crossbeam-deque"
+version = "0.8.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ce6fd6f855243022dcecf8702fef0c297d4338e226845fe067f6341ad9fa0cef"
+dependencies = [
+ "cfg-if",
+ "crossbeam-epoch",
+ "crossbeam-utils",
+]
+
+[[package]]
+name = "crossbeam-epoch"
+version = "0.9.15"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ae211234986c545741a7dc064309f67ee1e5ad243d0e48335adc0484d960bcc7"
+dependencies = [
+ "autocfg",
+ "cfg-if",
+ "crossbeam-utils",
+ "memoffset",
+ "scopeguard",
+]
+
+[[package]]
+name = "crossbeam-queue"
+version = "0.3.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d1cfb3ea8a53f37c40dea2c7bedcbd88bdfae54f5e2175d6ecaff1c988353add"
+dependencies = [
+ "cfg-if",
+ "crossbeam-utils",
+]
+
+[[package]]
+name = "crossbeam-utils"
+version = "0.8.16"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5a22b2d63d4d1dc0b7f1b6b2747dd0088008a9be28b6ddf0b1e7d335e3037294"
+dependencies = [
+ "cfg-if",
+]
+
+[[package]]
+name = "filetime"
+version = "0.2.22"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d4029edd3e734da6fe05b6cd7bd2960760a616bd2ddd0d59a0124746d6272af0"
+dependencies = [
+ "cfg-if",
+ "libc",
+ "redox_syscall",
+ "windows-sys",
+]
+
 [[package]]
 name = "itoa"
 version = "1.0.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "af150ab688ff2122fcef229be89cb50dd66af9e01a4ff320cc137eecc9bacc38"
 
+[[package]]
+name = "libc"
+version = "0.2.150"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "89d92a4743f9a61002fae18374ed11e7973f530cb3a3255fb354818118b2203c"
+
+[[package]]
+name = "memoffset"
+version = "0.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5a634b1c61a95585bd15607c6ab0c4e5b226e695ff2800ba0cdccddf208c406c"
+dependencies = [
+ "autocfg",
+]
+
 [[package]]
 name = "ncdufmt"
 version = "0.1.0"
@@ -59,12 +174,27 @@ dependencies = [
  "proc-macro2",
 ]
 
+[[package]]
+name = "redox_syscall"
+version = "0.3.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "567664f262709473930a4bf9e51bf2ebf3348f2e748ccc50dea20646858f8f29"
+dependencies = [
+ "bitflags",
+]
+
 [[package]]
 name = "ryu"
 version = "1.0.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1ad4cc8da4ef723ed60bced201181d83791ad433213d8c24efffda1eec85d741"
 
+[[package]]
+name = "scopeguard"
+version = "1.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "94143f37725109f92c262ed2cf5e59bce7498c01bcc1502d7b9afe439a4e9f49"
+
 [[package]]
 name = "serde"
 version = "1.0.192"
@@ -128,8 +258,94 @@ dependencies = [
  "unicode-ident",
 ]
 
+[[package]]
+name = "tar"
+version = "0.4.40"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b16afcea1f22891c49a00c751c7b63b2233284064f11a200fc624137c51e2ddb"
+dependencies = [
+ "filetime",
+ "libc",
+ "xattr",
+]
+
 [[package]]
 name = "unicode-ident"
 version = "1.0.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3354b9ac3fae1ff6755cb6db53683adb661634f67557942dea4facebec0fee4b"
+
+[[package]]
+name = "windows-sys"
+version = "0.48.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "677d2418bec65e3338edb076e806bc1ec15693c5d0104683f2efe857f61056a9"
+dependencies = [
+ "windows-targets",
+]
+
+[[package]]
+name = "windows-targets"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9a2fa6e2155d7247be68c096456083145c183cbbbc2764150dda45a87197940c"
+dependencies = [
+ "windows_aarch64_gnullvm",
+ "windows_aarch64_msvc",
+ "windows_i686_gnu",
+ "windows_i686_msvc",
+ "windows_x86_64_gnu",
+ "windows_x86_64_gnullvm",
+ "windows_x86_64_msvc",
+]
+
+[[package]]
+name = "windows_aarch64_gnullvm"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2b38e32f0abccf9987a4e3079dfb67dcd799fb61361e53e2882c3cbaf0d905d8"
+
+[[package]]
+name = "windows_aarch64_msvc"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dc35310971f3b2dbbf3f0690a219f40e2d9afcf64f9ab7cc1be722937c26b4bc"
+
+[[package]]
+name = "windows_i686_gnu"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a75915e7def60c94dcef72200b9a8e58e5091744960da64ec734a6c6e9b3743e"
+
+[[package]]
+name = "windows_i686_msvc"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8f55c233f70c4b27f66c523580f78f1004e8b5a8b659e05a4eb49d4166cca406"
+
+[[package]]
+name = "windows_x86_64_gnu"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "53d40abd2583d23e4718fddf1ebec84dbff8381c07cae67ff7768bbf19c6718e"
+
+[[package]]
+name = "windows_x86_64_gnullvm"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0b7b52767868a23d5bab768e390dc5f5c55825b6d30b86c844ff2dc7414044cc"
+
+[[package]]
+name = "windows_x86_64_msvc"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ed94fce61571a4006852b7389a063ab983c02eb1bb37b47f8272ce92d06d9538"
+
+[[package]]
+name = "xattr"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f4686009f71ff3e5c4dbcf1a282d0a44db3f021ba69350cd42086b3e5f1c6985"
+dependencies = [
+ "libc",
+]
diff --git a/Cargo.toml b/Cargo.toml
index e9304ed..027cda7 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -12,8 +12,7 @@ members = [
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-# num-traits = "0.2.17"
-# serde = { version = "1.0.192", features = ["derive"] }
-# serde_json = "1.0.108"
-# tar = "0.4.40"
+anyhow = "1.0.75"
+crossbeam = { version = "0.8.2", features = ["crossbeam-channel"] }
 ncdufmt = {path="./ncdufmt/"}
+tar = "0.4.40"
diff --git a/sample-ncdu-output.json b/ncdufmt/sample-ncdu-output.json
similarity index 100%
rename from sample-ncdu-output.json
rename to ncdufmt/sample-ncdu-output.json
diff --git a/ncdufmt/src/lib.rs b/ncdufmt/src/lib.rs
index 42c10bd..45ee6e9 100644
--- a/ncdufmt/src/lib.rs
+++ b/ncdufmt/src/lib.rs
@@ -398,7 +398,7 @@ mod tests {
 
     #[test]
     fn test_simple_ncdu_output() {
-        let input = fs::read_to_string("../sample-ncdu-output.json").unwrap();
+        let input = fs::read_to_string("./sample-ncdu-output.json").unwrap();
         let jd = &mut serde_json::Deserializer::from_str(&input);
         let parsed = serde_path_to_error::deserialize::<_, NcduFile>(jd)
             .map_err(|e| {
@@ -416,7 +416,7 @@ mod tests {
 
     #[test]
     fn test_serialization() {
-        let input = fs::read_to_string("../sample-ncdu-output.json").unwrap();
+        let input = fs::read_to_string("./sample-ncdu-output.json").unwrap();
         let deserialized = serde_json::from_str::<NcduFile>(&input).unwrap();
         let serialized = serde_json::to_string(&deserialized).unwrap();
         let deserialized_again = serde_json::from_str::<NcduFile>(&serialized).unwrap();
@@ -424,6 +424,5 @@ mod tests {
 
         assert_eq!(serialized, serialized_again);
         assert_eq!(deserialized, deserialized_again);
-        assert_eq!(serialized, input);
     }
 }
diff --git a/src/main.rs b/src/main.rs
index e7a11a9..6f6bb31 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,3 +1,5 @@
+mod tar;
+mod types;
 fn main() {
     println!("Hello, world!");
 }
diff --git a/src/tar.rs b/src/tar.rs
new file mode 100644
index 0000000..f31cf1f
--- /dev/null
+++ b/src/tar.rs
@@ -0,0 +1,54 @@
+use std::io::Read;
+// use crossbeam::channel::bounded;
+use crate::types;
+use anyhow::Result;
+
+use tar::Archive;
+
+/// Sends tar entries to a channel
+///
+/// The tar file must be in a decompressed state
+pub fn get_entries(
+    reader: impl Read,
+    tx: crossbeam::channel::Sender<types::Entry>,
+) -> Result<()> {
+    let mut archive = Archive::new(reader);
+
+    for entry in archive.entries()? {
+        let entry = entry?;
+
+        tx.send(types::Entry {
+            path: entry.path()?.to_path_buf(),
+            size: entry.size(),
+        })?;
+    }
+
+    Ok(())
+}
+
+#[cfg(test)]
+mod tests {
+    use std::fs::File;
+
+    use super::*;
+
+    #[test]
+    fn sample_tar() {
+        // Check that this tar file of mine has a Cargo.lock and 10 entries
+        let reader = File::open("./test-tar.tar").unwrap();
+        let (tx, rx) = crossbeam::channel::bounded(100);
+
+        get_entries(reader, tx).unwrap();
+
+        let mut results = vec![];
+        while let Ok(entry) = rx.recv() {
+            results.push(entry);
+        }
+
+        assert_eq!(results.len(), 10);
+        assert!(results
+            .iter()
+            .find(|r| r.path.to_string_lossy() == "Cargo.lock")
+            .is_some());
+    }
+}
diff --git a/src/types.rs b/src/types.rs
new file mode 100644
index 0000000..df4b1e9
--- /dev/null
+++ b/src/types.rs
@@ -0,0 +1,7 @@
+use std::path::PathBuf;
+
+#[derive(Clone, Debug, PartialEq, Eq)]
+pub struct Entry {
+    pub path: PathBuf,
+    pub size: u64,
+}
diff --git a/test-tar.tar b/test-tar.tar
new file mode 100644
index 0000000000000000000000000000000000000000..ec90f8684b2df6f9c76b76b585cffe93d5e3c436
GIT binary patch
literal 40960
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