public API

type: fixed

.github/workflows/build.yaml

@@ -39,7 +39,7 @@ jobs:
     runs-on: ${{matrix.os}}
 
     env:
-      RUSTFLAGS: "-D warnings"
+      RUSTFLAGS: --deny warnings
 
     steps:
     - uses: actions/checkout@v2
@@ -63,14 +63,9 @@ jobs:
           target
         key: cargo-${{ env.CACHE_KEY }}-${{ runner.os }}-${{ hashFiles('**/Cargo.lock') }}
 
-    - name: Install Stable
+    - name: Install Rust Toolchain Components
-      uses: actions-rs/toolchain@v1
+      run: |
-      with:
+        rustup component add clippy rustfmt
-        toolchain: stable
-        target: ${{matrix.target}}
-        profile: minimal
-        components: clippy, rustfmt
-        override: true
 
     - name: Info
       run: |

bin/package

@@ -26,16 +26,13 @@ case $os in
     ;;
 esac
 
-case $os in
+RUSTFLAGS='--deny warnings --codegen target-feature=+crt-static' \
-  ubuntu-latest | macos-latest)
+  cargo build --bin $bin --target $target --release
-    cargo rustc --bin $bin --target $target --release
 executable=target/$target/release/$bin
-    ;;
+
-  windows-latest)
+if [[ $os == windows-2016 ]]; then
-    cargo rustc --bin $bin --target $target --release -- -C target-feature="+crt-static"
+  executable=$executable.exe
-    executable=target/$target/release/$bin.exe
+fi
-    ;;
-esac
 
 echo "Building completions..."
 cargo run --package gen -- --bin $executable completion-scripts

rust-toolchain

@@ -0,0 +1 @@
+1.51.0

src/bytes.rs

@@ -7,9 +7,9 @@ const TI: u64 = GI << 10;
 const PI: u64 = TI << 10;
 const EI: u64 = PI << 10;
 
-#[serde(transparent)]
 #[derive(Debug, PartialEq, Copy, Clone, PartialOrd, Ord, Eq, Serialize, Deserialize, Default)]
-pub(crate) struct Bytes(pub(crate) u64);
+#[serde(transparent)]
+pub struct Bytes(pub(crate) u64);
 
 impl Bytes {
   pub(crate) fn kib() -> Self {
@@ -89,7 +89,7 @@ impl FromStr for Bytes {
       _ => {
         return Err(Error::ByteSuffix {
           text: text.to_owned(),
-          suffix: suffix.to_owned(),
+          suffix: suffix.clone(),
         })
       }
     };

src/env.rs

@@ -1,6 +1,6 @@
 use crate::common::*;
 
-pub(crate) struct Env {
+pub struct Env {
   args: Vec<OsString>,
   dir: PathBuf,
   input: Box<dyn InputStream>,
@@ -41,7 +41,7 @@ impl Env {
         .and_then(|width| width.parse::<usize>().ok());
 
       if let Some(width) = width {
-        app = app.set_term_width(width)
+        app = app.set_term_width(width);
       }
 
       app

src/error.rs

@@ -2,7 +2,7 @@ use crate::common::*;
 
 #[derive(Debug, Snafu)]
 #[snafu(visibility(pub(crate)))]
-pub(crate) enum Error {
+pub enum Error {
   #[snafu(display("Failed to parse announce URL: {}", source))]
   AnnounceUrlParse { source: url::ParseError },
   #[snafu(display("Failed to parse byte count `{}`: {}", text, source))]

src/file_path.rs

@@ -1,7 +1,7 @@
 use crate::common::*;
 
-#[serde(transparent)]
 #[derive(Deserialize, Serialize, Debug, PartialEq, Clone, Ord, PartialOrd, Eq)]
+#[serde(transparent)]
 pub(crate) struct FilePath {
   components: Vec<String>,
 }

src/host_port.rs

@@ -1,7 +1,7 @@
 use crate::common::*;
 
 #[derive(Debug, PartialEq, Clone)]
-pub(crate) struct HostPort {
+pub struct HostPort {
   host: Host,
   port: u16,
 }

src/host_port_parse_error.rs

@@ -2,7 +2,7 @@ use crate::common::*;
 
 #[derive(Debug, Snafu)]
 #[snafu(visibility(pub(crate)))]
-pub(crate) enum HostPortParseError {
+pub enum HostPortParseError {
   #[snafu(display("Failed to parse host `{}`: {}", text, source))]
   Host {
     text: String,

src/info.rs

@@ -1,22 +1,22 @@
 use crate::common::*;
 
 #[derive(Deserialize, Serialize, Debug, PartialEq, Clone)]
-pub(crate) struct Info {
+pub struct Info {
   #[serde(
     skip_serializing_if = "Option::is_none",
     default,
     with = "unwrap_or_skip"
   )]
-  pub(crate) private: Option<bool>,
+  pub private: Option<bool>,
   #[serde(rename = "piece length")]
-  pub(crate) piece_length: Bytes,
+  pub piece_length: Bytes,
-  pub(crate) name: String,
+  pub name: String,
   #[serde(
     skip_serializing_if = "Option::is_none",
     default,
     with = "unwrap_or_skip"
   )]
-  pub(crate) source: Option<String>,
+  pub source: Option<String>,
   pub(crate) pieces: PieceList,
   #[serde(flatten)]
   pub(crate) mode: Mode,
@@ -26,7 +26,7 @@ pub(crate) struct Info {
     with = "unwrap_or_skip",
     rename = "update-url"
   )]
-  pub(crate) update_url: Option<Url>,
+  pub update_url: Option<Url>,
 }
 
 impl Info {

src/infohash.rs

@@ -1,12 +1,12 @@
 use crate::common::*;
 
 #[derive(Debug, Eq, PartialEq, Copy, Clone)]
-pub(crate) struct Infohash {
+pub struct Infohash {
-  inner: Sha1Digest,
+  pub inner: Sha1Digest,
 }
 
 impl Infohash {
-  pub(crate) fn from_input(input: &Input) -> Result<Infohash, Error> {
+  pub fn from_input(input: &Input) -> Result<Infohash, Error> {
     let value = Value::from_bencode(input.data()).map_err(|error| Error::MetainfoDecode {
       input: input.source().clone(),
       error,
@@ -43,7 +43,7 @@ impl Infohash {
     }
   }
 
-  pub(crate) fn from_bencoded_info_dict(info: &[u8]) -> Infohash {
+  pub fn from_bencoded_info_dict(info: &[u8]) -> Infohash {
     Infohash {
       inner: Sha1Digest::from_data(info),
     }

src/input.rs

@@ -1,20 +1,20 @@
 use crate::common::*;
 
-pub(crate) struct Input {
+pub struct Input {
   source: InputTarget,
   data: Vec<u8>,
 }
 
 impl Input {
-  pub(crate) fn new(source: InputTarget, data: Vec<u8>) -> Input {
+  pub fn new(source: InputTarget, data: Vec<u8>) -> Input {
     Self { source, data }
   }
 
-  pub(crate) fn data(&self) -> &[u8] {
+  pub fn data(&self) -> &[u8] {
     &self.data
   }
 
-  pub(crate) fn source(&self) -> &InputTarget {
+  pub fn source(&self) -> &InputTarget {
     &self.source
   }
 

src/input_target.rs

@@ -1,13 +1,13 @@
 use crate::common::*;
 
 #[derive(PartialEq, Debug, Clone)]
-pub(crate) enum InputTarget {
+pub enum InputTarget {
   Path(PathBuf),
   Stdin,
 }
 
 impl InputTarget {
-  pub(crate) fn try_from_os_str(text: &OsStr) -> Result<Self, OsString> {
+  pub fn try_from_os_str(text: &OsStr) -> Result<Self, OsString> {
     text
       .try_into()
       .map_err(|err: Error| OsString::from(err.to_string()))

src/lib.rs

@@ -41,85 +41,85 @@
 
 #[cfg(test)]
 #[macro_use]
-mod assert_matches;
+pub mod assert_matches;
 
 #[macro_use]
-mod errln;
+pub mod errln;
 
 #[macro_use]
-mod err;
+pub mod err;
 
 #[macro_use]
-mod out;
+pub mod out;
 
 #[macro_use]
-mod outln;
+pub mod outln;
 
 #[cfg(test)]
 #[macro_use]
-mod test_env;
+pub mod test_env;
 
 #[cfg(test)]
-mod test_env_builder;
+pub mod test_env_builder;
 
 #[cfg(test)]
-mod capture;
+pub mod capture;
 
-mod arguments;
+pub mod arguments;
-mod bytes;
+pub mod bytes;
-mod common;
+pub mod common;
-mod consts;
+pub mod consts;
-mod env;
+pub mod env;
-mod error;
+pub mod error;
-mod file_error;
+pub mod file_error;
-mod file_info;
+pub mod file_info;
-mod file_path;
+pub mod file_path;
-mod file_status;
+pub mod file_status;
-mod files;
+pub mod files;
-mod hasher;
+pub mod hasher;
-mod host_port;
+pub mod host_port;
-mod host_port_parse_error;
+pub mod host_port_parse_error;
-mod info;
+pub mod info;
-mod infohash;
+pub mod infohash;
-mod input;
+pub mod input;
-mod input_stream;
+pub mod input_stream;
-mod input_target;
+pub mod input_target;
-mod into_u64;
+pub mod into_u64;
-mod into_usize;
+pub mod into_usize;
-mod invariant;
+pub mod invariant;
-mod lint;
+pub mod lint;
-mod linter;
+pub mod linter;
-mod magnet_link;
+pub mod magnet_link;
-mod magnet_link_parse_error;
+pub mod magnet_link_parse_error;
-mod md5_digest;
+pub mod md5_digest;
-mod metainfo;
+pub mod metainfo;
-mod metainfo_error;
+pub mod metainfo_error;
-mod mode;
+pub mod mode;
-mod options;
+pub mod options;
-mod output_stream;
+pub mod output_stream;
-mod output_target;
+pub mod output_target;
-mod piece_length_picker;
+pub mod piece_length_picker;
-mod piece_list;
+pub mod piece_list;
-mod platform;
+pub mod platform;
-mod platform_interface;
+pub mod platform_interface;
-mod print;
+pub mod print;
-mod reckoner;
+pub mod reckoner;
-mod run;
+pub mod run;
-mod sha1_digest;
+pub mod sha1_digest;
-mod shell;
+pub mod shell;
-mod sort_key;
+pub mod sort_key;
-mod sort_order;
+pub mod sort_order;
-mod sort_spec;
+pub mod sort_spec;
-mod status;
+pub mod status;
-mod step;
+pub mod step;
-mod style;
+pub mod style;
-mod subcommand;
+pub mod subcommand;
-mod table;
+pub mod table;
-mod torrent_summary;
+pub mod torrent_summary;
-mod use_color;
+pub mod use_color;
-mod verifier;
+pub mod verifier;
-mod walker;
+pub mod walker;
-mod xor_args;
+pub mod xor_args;
 
 #[cfg(feature = "bench")]
 pub mod bench;

src/linter.rs

@@ -12,7 +12,7 @@ impl Linter {
   }
 
   pub(crate) fn allow(&mut self, allowed: impl IntoIterator<Item = Lint>) {
-    self.allowed.extend(allowed)
+    self.allowed.extend(allowed);
   }
 
   pub(crate) fn is_allowed(&self, lint: Lint) -> bool {

src/magnet_link.rs

@@ -1,17 +1,17 @@
 use crate::common::*;
 
 #[derive(Debug, PartialEq)]
-pub(crate) struct MagnetLink {
+pub struct MagnetLink {
-  infohash: Infohash,
+  pub infohash: Infohash,
-  name: Option<String>,
+  pub name: Option<String>,
-  peers: Vec<HostPort>,
+  pub peers: Vec<HostPort>,
-  trackers: Vec<Url>,
+  pub trackers: Vec<Url>,
-  indices: BTreeSet<u64>,
+  pub indices: BTreeSet<u64>,
 }
 
 impl MagnetLink {
   /// See `Info::infohash_lossy` for details on when this function is lossy.
-  pub(crate) fn from_metainfo_lossy(metainfo: &Metainfo) -> Result<MagnetLink> {
+  pub fn from_metainfo_lossy(metainfo: &Metainfo) -> Result<MagnetLink> {
     let mut link = Self::with_infohash(metainfo.infohash_lossy()?);
 
     link.set_name(metainfo.info.name.clone());
@@ -23,7 +23,7 @@ impl MagnetLink {
     Ok(link)
   }
 
-  pub(crate) fn with_infohash(infohash: Infohash) -> Self {
+  pub fn with_infohash(infohash: Infohash) -> Self {
     MagnetLink {
       infohash,
       name: None,
@@ -34,23 +34,23 @@ impl MagnetLink {
   }
 
   #[allow(dead_code)]
-  pub(crate) fn set_name(&mut self, name: impl Into<String>) {
+  pub fn set_name(&mut self, name: impl Into<String>) {
     self.name = Some(name.into());
   }
 
-  pub(crate) fn add_peer(&mut self, peer: HostPort) {
+  pub fn add_peer(&mut self, peer: HostPort) {
     self.peers.push(peer);
   }
 
-  pub(crate) fn add_tracker(&mut self, tracker: Url) {
+  pub fn add_tracker(&mut self, tracker: Url) {
     self.trackers.push(tracker);
   }
 
-  pub(crate) fn add_index(&mut self, index: u64) {
+  pub fn add_index(&mut self, index: u64) {
     self.indices.insert(index);
   }
 
-  pub(crate) fn to_url(&self) -> Url {
+  pub fn to_url(&self) -> Url {
     let mut url = Url::parse("magnet:").invariant_unwrap("`magnet:` is valid URL");
 
     let mut query = format!("xt=urn:btih:{}", self.infohash);
@@ -85,7 +85,7 @@ impl MagnetLink {
     url
   }
 
-  fn parse(text: &str) -> Result<Self, MagnetLinkParseError> {
+  pub fn parse(text: &str) -> Result<Self, MagnetLinkParseError> {
     let url = Url::parse(&text).context(magnet_link_parse_error::Url)?;
 
     if url.scheme() != "magnet" {

src/magnet_link_parse_error.rs

@@ -2,7 +2,7 @@ use crate::common::*;
 
 #[derive(Debug, Snafu)]
 #[snafu(visibility(pub(crate)))]
-pub(crate) enum MagnetLinkParseError {
+pub enum MagnetLinkParseError {
   #[snafu(display("Failed to parse hex string `{}`: {}", text, source))]
   HexParse {
     text: String,

src/md5_digest.rs

@@ -1,7 +1,7 @@
 use crate::common::*;
 
-#[serde(transparent)]
 #[derive(Deserialize, Serialize, Debug, Eq, PartialEq, Copy, Clone)]
+#[serde(transparent)]
 pub(crate) struct Md5Digest {
   #[serde(with = "SerHex::<serde_hex::Strict>")]
   bytes: [u8; 16],

src/metainfo.rs

@@ -1,68 +1,68 @@
 use crate::common::*;
 
 #[derive(Deserialize, Serialize, Debug, PartialEq, Clone)]
-pub(crate) struct Metainfo {
+pub struct Metainfo {
   #[serde(
     skip_serializing_if = "Option::is_none",
     default,
     with = "unwrap_or_skip"
   )]
-  pub(crate) announce: Option<String>,
+  pub announce: Option<String>,
   #[serde(
     rename = "announce-list",
     skip_serializing_if = "Option::is_none",
     default,
     with = "unwrap_or_skip"
   )]
-  pub(crate) announce_list: Option<Vec<Vec<String>>>,
+  pub announce_list: Option<Vec<Vec<String>>>,
   #[serde(
     skip_serializing_if = "Option::is_none",
     default,
     with = "unwrap_or_skip"
   )]
-  pub(crate) comment: Option<String>,
+  pub comment: Option<String>,
   #[serde(
     rename = "created by",
     skip_serializing_if = "Option::is_none",
     default,
     with = "unwrap_or_skip"
   )]
-  pub(crate) created_by: Option<String>,
+  pub created_by: Option<String>,
   #[serde(
     rename = "creation date",
     skip_serializing_if = "Option::is_none",
     default,
     with = "unwrap_or_skip"
   )]
-  pub(crate) creation_date: Option<u64>,
+  pub creation_date: Option<u64>,
   #[serde(
     skip_serializing_if = "Option::is_none",
     default,
     with = "unwrap_or_skip"
   )]
-  pub(crate) encoding: Option<String>,
+  pub encoding: Option<String>,
-  pub(crate) info: Info,
+  pub info: Info,
   #[serde(
     skip_serializing_if = "Option::is_none",
     default,
     with = "unwrap_or_skip"
   )]
-  pub(crate) nodes: Option<Vec<HostPort>>,
+  pub nodes: Option<Vec<HostPort>>,
 }
 
 impl Metainfo {
-  pub(crate) fn from_input(input: &Input) -> Result<Metainfo> {
+  pub fn from_input(input: &Input) -> Result<Metainfo> {
     Self::deserialize(input.source(), input.data())
   }
 
-  pub(crate) fn deserialize(source: &InputTarget, data: &[u8]) -> Result<Metainfo, Error> {
+  pub fn deserialize(source: &InputTarget, data: &[u8]) -> Result<Metainfo, Error> {
     let metainfo = bendy::serde::de::from_bytes(&data).context(error::MetainfoDeserialize {
       input: source.clone(),
     })?;
     Ok(metainfo)
   }
 
-  pub(crate) fn serialize(&self) -> Result<Vec<u8>, Error> {
+  pub fn serialize(&self) -> Result<Vec<u8>, Error> {
     bendy::serde::ser::to_bytes(&self).context(error::MetainfoSerialize)
   }
 
@@ -99,7 +99,7 @@ impl Metainfo {
     self.info.content_size()
   }
 
-  pub(crate) fn trackers<'a>(&'a self) -> impl Iterator<Item = Result<Url>> + 'a {
+  pub fn trackers<'a>(&'a self) -> impl Iterator<Item = Result<Url>> + 'a {
     let mut seen = HashSet::new();
     iter::once(&self.announce)
       .flatten()

src/metainfo_error.rs

@@ -1,7 +1,7 @@
 use crate::common::*;
 
 #[derive(Debug, Copy, Clone)]
-pub(crate) enum MetainfoError {
+pub enum MetainfoError {
   Type,
   InfoMissing,
   InfoType,

src/mode.rs

@@ -1,7 +1,7 @@
 use crate::common::*;
 
-#[serde(untagged)]
 #[derive(Deserialize, Serialize, Debug, PartialEq, Clone)]
+#[serde(untagged)]
 pub(crate) enum Mode {
   Single {
     length: Bytes,

src/output_stream.rs

@@ -1,10 +1,10 @@
 use crate::common::*;
 
 pub(crate) struct OutputStream {
+  active: bool,
   stream: Box<dyn Write>,
   style: bool,
   term: bool,
-  active: bool,
 }
 
 impl OutputStream {

src/sha1_digest.rs

@@ -1,22 +1,22 @@
 use crate::common::*;
 
 #[derive(Debug, Eq, PartialEq, Copy, Clone)]
-pub(crate) struct Sha1Digest {
+pub struct Sha1Digest {
-  bytes: [u8; Self::LENGTH],
+  pub bytes: [u8; Self::LENGTH],
 }
 
 impl Sha1Digest {
-  pub(crate) const LENGTH: usize = 20;
+  pub const LENGTH: usize = 20;
 
-  pub(crate) fn from_bytes(bytes: [u8; Self::LENGTH]) -> Self {
+  pub fn from_bytes(bytes: [u8; Self::LENGTH]) -> Self {
     Sha1Digest { bytes }
   }
 
-  pub(crate) fn bytes(self) -> [u8; Self::LENGTH] {
+  pub fn bytes(self) -> [u8; Self::LENGTH] {
     self.bytes
   }
 
-  pub(crate) fn from_data(data: impl AsRef<[u8]>) -> Self {
+  pub fn from_data(data: impl AsRef<[u8]>) -> Self {
     Sha1::from(data).digest().into()
   }
 }

src/shell.rs

@@ -4,7 +4,7 @@ use structopt::clap;
 
 #[derive(Copy, Clone, EnumVariantNames, IntoStaticStr, EnumString, EnumIter, Debug)]
 #[strum(serialize_all = "kebab-case")]
-pub(crate) enum Shell {
+pub enum Shell {
   Zsh,
   Bash,
   Fish,
@@ -62,6 +62,6 @@ mod tests {
 
   #[test]
   fn variants() {
-    assert_eq!(Shell::VARIANTS, clap::Shell::variants())
+    assert_eq!(Shell::VARIANTS, clap::Shell::variants());
   }
 }

src/subcommand/torrent/create.rs

@@ -338,9 +338,7 @@ impl Create {
 
     if let OutputTarget::Path(path) = &output {
       if !self.force && path.exists() {
-        return Err(Error::OutputExists {
+        return Err(Error::OutputExists { path: path.clone() });
-          path: path.to_owned(),
-        });
       }
     }
 
@@ -1151,7 +1149,7 @@ mod tests {
         length: Bytes(3),
         md5sum: None,
       }
-    )
+    );
   }
 
   #[test]
@@ -1182,7 +1180,7 @@ mod tests {
         length: Bytes(4),
         md5sum: None,
       }
-    )
+    );
   }
 
   #[test]
@@ -1213,7 +1211,7 @@ mod tests {
         length: Bytes(4),
         md5sum: None,
       }
-    )
+    );
   }
 
   #[test]
@@ -1258,7 +1256,7 @@ mod tests {
           },
         ],
       }
-    )
+    );
   }
 
   #[test]
@@ -1285,7 +1283,7 @@ mod tests {
         length: Bytes(3),
         md5sum: None,
       }
-    )
+    );
   }
 
   #[test]
@@ -1319,7 +1317,7 @@ mod tests {
         length: Bytes(3),
         md5sum: None,
       }
-    )
+    );
   }
 
   #[test]
@@ -1346,7 +1344,7 @@ mod tests {
         length: Bytes(0),
         md5sum: None,
       }
-    )
+    );
   }
 
   #[test]
@@ -1367,7 +1365,7 @@ mod tests {
     env.assert_ok();
     let metainfo = env.load_metainfo("foo.torrent");
     assert_eq!(metainfo.info.pieces.count(), 0);
-    assert_eq!(metainfo.info.mode, Mode::Multiple { files: Vec::new() })
+    assert_eq!(metainfo.info.mode, Mode::Multiple { files: Vec::new() });
   }
 
   #[test]

src/subcommand/torrent/verify.rs

@@ -16,7 +16,19 @@ const INPUT_FLAG: &str = "input-flag";
   version_message(consts::VERSION_MESSAGE),
   about("Verify files against a .torrent file.")
 )]
+#[cfg_attr(test, structopt(setting = AppSettings::ColorNever))]
 pub(crate) struct Verify {
+  #[structopt(
+    long = "base-directory",
+    short = "b",
+    value_name = "BASE-DIRECTORY",
+    conflicts_with = "content",
+    empty_values(false),
+    parse(from_os_str),
+    help = "Look for torrent content in `BASE-DIRECTORY`/`NAME`, where `NAME` is the `name` field \
+            of the torrent info dictionary."
+  )]
+  base_directory: Option<PathBuf>,
   #[structopt(
     long = "content",
     short = "c",
@@ -24,7 +36,7 @@ pub(crate) struct Verify {
     empty_values(false),
     parse(from_os_str),
     help = "Verify torrent content at `PATH` against torrent metainfo. Defaults to `name` field \
-            of torrent info dictionary."
+            of the torrent info dictionary."
   )]
   content: Option<PathBuf>,
   #[structopt(
@@ -64,13 +76,19 @@ impl Verify {
 
     let metainfo = Metainfo::from_input(&input)?;
 
-    let content = self.content.as_ref().map_or_else(
+    let content = self
-      || match target {
+      .content
+      .as_ref()
+      .cloned()
+      .or_else(|| {
+        self
+          .base_directory
+          .map(|base_directory| base_directory.join(&metainfo.info.name).lexiclean())
+      })
+      .unwrap_or_else(|| match target {
         InputTarget::Path(path) => path.join("..").join(&metainfo.info.name).lexiclean(),
         InputTarget::Stdin => PathBuf::from(&metainfo.info.name),
-      },
+      });
-      PathBuf::clone,
-    );
 
     let progress_bar = if env.err().is_styled_term() && !options.quiet {
       let style = ProgressStyle::default_bar()
@@ -137,6 +155,20 @@ mod tests {
     assert_matches!(env.run(), Err(Error::Clap { .. }));
   }
 
+  #[test]
+  fn base_directory_conflicts_with_content() {
+    let mut env = test_env! {
+      args: ["torrent", "verify", "foo.torrent", "--content", "foo", "--base-directory", "dir"],
+      tree: {},
+    };
+    assert_eq!(
+      env.run().unwrap_err().to_string(),
+      "error: The argument '--content <PATH>' cannot be used with '--base-directory \
+       <BASE-DIRECTORY>'\n\nUSAGE:\n    imdl torrent verify <INPUT> --base-directory \
+       <BASE-DIRECTORY> --content <PATH>\n\nFor more information try --help\n"
+    );
+  }
+
   #[test]
   fn pass() -> Result<()> {
     let mut create_env = test_env! {
@@ -323,6 +355,62 @@ mod tests {
     Ok(())
   }
 
+  #[test]
+  fn base_directory() -> Result<()> {
+    let mut create_env = test_env! {
+      args: [
+        "torrent",
+        "create",
+        "--input",
+        "foo",
+        "--announce",
+        "https://bar",
+      ],
+      tree: {
+        foo: {
+          a: "abc",
+          d: "efg",
+          h: "ijk",
+        },
+      },
+    };
+
+    create_env.assert_ok();
+
+    create_env.create_dir("dir");
+
+    create_env.rename("foo", "dir/foo");
+
+    let torrent = create_env.resolve("foo.torrent")?;
+    let dir = create_env.resolve("dir")?;
+
+    let mut verify_env = test_env! {
+      args: [
+        "torrent",
+        "verify",
+        "--input",
+        &torrent,
+        "--base-directory",
+        &dir,
+      ],
+      tree: {},
+    };
+
+    verify_env.assert_ok();
+
+    let want = format!(
+      "[1/2] \u{1F4BE} Loading metainfo from `{}`…\n[2/2] \u{1F9EE} Verifying pieces from \
+       `{}`…\n\u{2728}\u{2728} Verification succeeded! \u{2728}\u{2728}\n",
+      torrent.display(),
+      dir.join("foo").display(),
+    );
+
+    assert_eq!(verify_env.err(), want);
+    assert_eq!(verify_env.out(), "");
+
+    Ok(())
+  }
+
   #[test]
   fn verify_stdin() -> Result<()> {
     let mut create_env = test_env! {

src/test_env.rs

@@ -37,19 +37,19 @@ macro_rules! test_env {
 
 pub(crate) struct TestEnv {
   env: Env,
-  #[allow(unused)]
-  tempdir: TempDir,
   err: Capture,
   out: Capture,
+  #[allow(unused)]
+  tempdir: TempDir,
 }
 
 impl TestEnv {
   pub(crate) fn new(tempdir: TempDir, env: Env, err: Capture, out: Capture) -> TestEnv {
     Self {
-      tempdir,
-      err,
       env,
+      err,
       out,
+      tempdir,
     }
   }
 
@@ -77,6 +77,14 @@ impl TestEnv {
     fs::create_dir(self.env.resolve(path).unwrap()).unwrap();
   }
 
+  pub(crate) fn rename(&self, from: impl AsRef<Path>, to: impl AsRef<Path>) {
+    fs::rename(
+      self.env.resolve(from).unwrap(),
+      self.env.resolve(to).unwrap(),
+    )
+    .unwrap();
+  }
+
   pub(crate) fn read_to_string(&self, path: impl AsRef<Path>) -> String {
     fs::read_to_string(self.env.resolve(path).unwrap()).unwrap()
   }

src/torrent_summary.rs

@@ -1,30 +1,30 @@
 use crate::common::*;
 
-pub(crate) struct TorrentSummary {
+pub struct TorrentSummary {
   infohash: Infohash,
   metainfo: Metainfo,
   size: Bytes,
 }
 
 #[derive(Serialize)]
-pub(crate) struct TorrentSummaryJson {
+pub struct TorrentSummaryJson {
-  name: String,
+  pub name: String,
-  comment: Option<String>,
+  pub comment: Option<String>,
-  creation_date: Option<u64>,
+  pub creation_date: Option<u64>,
-  created_by: Option<String>,
+  pub created_by: Option<String>,
-  source: Option<String>,
+  pub source: Option<String>,
-  info_hash: String,
+  pub info_hash: String,
-  torrent_size: u64,
+  pub torrent_size: u64,
-  content_size: u64,
+  pub content_size: u64,
-  private: bool,
+  pub private: bool,
-  tracker: Option<String>,
+  pub tracker: Option<String>,
-  announce_list: Vec<Vec<String>>,
+  pub announce_list: Vec<Vec<String>>,
-  update_url: Option<String>,
+  pub update_url: Option<String>,
-  dht_nodes: Vec<String>,
+  pub dht_nodes: Vec<String>,
-  piece_size: u64,
+  pub piece_size: u64,
-  piece_count: usize,
+  pub piece_count: usize,
-  file_count: usize,
+  pub file_count: usize,
-  files: Vec<String>,
+  pub files: Vec<String>,
 }
 
 impl TorrentSummary {
@@ -37,14 +37,14 @@ impl TorrentSummary {
   }
 
   /// See `Info::infohash_lossy` for details on when this function is lossy.
-  pub(crate) fn from_metainfo_lossy(metainfo: Metainfo) -> Result<Self> {
+  pub fn from_metainfo_lossy(metainfo: Metainfo) -> Result<Self> {
     let bytes = metainfo.serialize()?;
     let size = Bytes(bytes.len().into_u64());
     let infohash = metainfo.infohash_lossy()?;
     Ok(Self::new(metainfo, infohash, size))
   }
 
-  pub(crate) fn from_input(input: &Input) -> Result<Self> {
+  pub fn from_input(input: &Input) -> Result<Self> {
     let metainfo = Metainfo::from_input(input)?;
     let infohash = Infohash::from_input(input)?;
     let size = Bytes(input.data().len().into_u64());
@@ -52,7 +52,7 @@ impl TorrentSummary {
     Ok(Self::new(metainfo, infohash, size))
   }
 
-  pub(crate) fn write(&self, env: &mut Env) -> Result<()> {
+  pub fn write(&self, env: &mut Env) -> Result<()> {
     let table = self.table();
 
     if env.out().is_term() {
@@ -168,16 +168,16 @@ impl TorrentSummary {
     table
   }
 
-  pub(crate) fn write_json(&self, env: &mut Env) -> Result<()> {
+  pub fn write_json(&self, env: &mut Env) -> Result<()> {
     let data = self.torrent_summary_data();
     let json = serde_json::to_string(&data).context(error::JsonSerialize)?;
     outln!(env, "{}", json)?;
     Ok(())
   }
 
-  fn torrent_summary_data(&self) -> TorrentSummaryJson {
+  pub fn torrent_summary_data(&self) -> TorrentSummaryJson {
     let (file_count, files) = match &self.metainfo.info.mode {
-      Mode::Single { .. } => (1, vec![self.metainfo.info.name.to_owned()]),
+      Mode::Single { .. } => (1, vec![self.metainfo.info.name.clone()]),
       Mode::Multiple { files } => (
         files.len(),
         files
@@ -197,7 +197,7 @@ impl TorrentSummary {
     };
 
     TorrentSummaryJson {
-      name: self.metainfo.info.name.to_owned(),
+      name: self.metainfo.info.name.clone(),
       comment: self.metainfo.comment.clone(),
       creation_date: self.metainfo.creation_date,
       created_by: self.metainfo.created_by.clone(),