preview torrent files with transmission-show

4 files changed, 44 insertions, 2 deletions

diff --git a/development.md b/development.md
index d3da7e9..9e0707c 100644
--- a/development.md
+++ b/development.md
@@ -874,6 +874,7 @@ New view: Tree ! Toggle with 't', fold with 'z'. Navigate normally.
 - Dynamic filtering while typing a filter
 - Search as you type: do / then type a pattern and you will jump to the match.
 - replace `tar tvf` by `bsdtar -v --list --file`. Which can preview .deb and .rpm files
+- preview torrent files with `transmission-show`
 
 #### Changelog
 
@@ -944,7 +945,7 @@ New view: Tree ! Toggle with 't', fold with 'z'. Navigate normally.
 - [x] setting a filter reset the "found" searched path & index
 - [x] search as you type
 - [x] replace `tar tvf` by `bsdtar -v --list --file`. Which can preview .deb and .rpm files
-- [ ] torrent with [transmission show](https://github.com/ranger/ranger/blob/38bb8901004b75a407ffee4b9e176bc0a436cb15/ranger/data/scope.sh#L82C13-L82C48)
+- [x] torrent with `transmission-show`
 
 ## TODO
 
diff --git a/src/common/constant_strings_paths.rs b/src/common/constant_strings_paths.rs
index c8477d6..5089884 100644
--- a/src/common/constant_strings_paths.rs
+++ b/src/common/constant_strings_paths.rs
@@ -210,3 +210,5 @@ pub const LIBREOFFICE: &str = "libreoffice";
 pub const LAZYGIT: &str = "lazygit";
 /// duf
 pub const NCDU: &str = "ncdu";
+/// transmission-show
+pub const TRANSMISSION_SHOW: &str = "transmission-show";
diff --git a/src/io/display.rs b/src/io/display.rs
index 7b102ac..27f4469 100644
--- a/src/io/display.rs
+++ b/src/io/display.rs
@@ -396,6 +396,9 @@ impl<'a> WinMain<'a> {
             Preview::FifoCharDevice(text) => {
                 impl_preview!(text, tab, length, canvas, line_number_width, window, height)
             }
+            Preview::Torrent(text) => {
+                impl_preview!(text, tab, length, canvas, line_number_width, window, height)
+            }
 
             Preview::Empty => (),
         }
diff --git a/src/modes/display/preview.rs b/src/modes/display/preview.rs
index a04e2a9..05dfcfd 100644
--- a/src/modes/display/preview.rs
+++ b/src/modes/display/preview.rs
@@ -16,7 +16,7 @@ use tuikit::attr::{Attr, Color};
 
 use crate::common::{
     CALC_PDF_PATH, FFMPEG, FONTIMAGE, ISOINFO, JUPYTER, LIBREOFFICE, LSBLK, LSOF, MEDIAINFO,
-    PANDOC, RSVG_CONVERT, SS, THUMBNAIL_PATH, UEBERZUG,
+    PANDOC, RSVG_CONVERT, SS, THUMBNAIL_PATH, TRANSMISSION_SHOW, UEBERZUG,
 };
 use crate::log_info;
 use crate::modes::ContentWindow;
@@ -47,6 +47,7 @@ pub enum ExtensionKind {
     Notebook,
     Office,
     Epub,
+    Torrent,
     #[default]
     Unknown,
 }
@@ -72,6 +73,7 @@ impl ExtensionKind {
             "ipynb" => Self::Notebook,
             "doc" | "docx" | "odt" | "sxw" | "xlsx" | "xls" => Self::Office,
             "epub" => Self::Epub,
+            "torrent" => Self::Torrent,
             _ => Self::Unknown,
         }
     }
@@ -107,6 +109,7 @@ pub enum Preview {
     Socket(Socket),
     BlockDevice(BlockDevice),
     FifoCharDevice(FifoCharDevice),
+    Torrent(Torrent),
     #[default]
     Empty,
 }
@@ -201,6 +204,10 @@ impl Preview {
                     ExtensionKind::Epub if is_program_in_path(PANDOC) => {
                         Ok(Self::epub(&file_info.path).context("Preview: Couldn't parse epub")?)
                     }
+                    ExtensionKind::Torrent if is_program_in_path(TRANSMISSION_SHOW) => {
+                        Ok(Self::torrent(&file_info.path)
+                            .context("Preview couldn't explore the torrent file")?)
+                    }
                     _ => match Self::preview_syntaxed(extension, &file_info.path) {
                         Some(syntaxed_preview) => Ok(syntaxed_preview),
                         None => Self::preview_text_or_binary(file_info),
@@ -300,6 +307,10 @@ impl Preview {
         ))
     }
 
+    pub fn torrent(path: &Path) -> Result<Self> {
+        Ok(Self::Torrent(Torrent::new(path).context("")?))
+    }
+
     /// The size (most of the time the number of lines) of the preview.
     /// Some preview (thumbnail, empty) can't be scrolled and their size is always 0.
     pub fn len(&self) -> usize {
@@ -317,6 +328,7 @@ impl Preview {
             Self::Socket(socket) => socket.len(),
             Self::BlockDevice(blockdevice) => blockdevice.len(),
             Self::FifoCharDevice(fifo) => fifo.len(),
+            Self::Torrent(torrent) => torrent.len(),
         }
     }
 
@@ -1106,6 +1118,29 @@ impl Iso {
     }
 }
 
+pub struct Torrent {
+    pub content: Vec<String>,
+    length: usize,
+}
+
+impl Torrent {
+    fn new(path: &Path) -> Result<Self> {
+        let path = path.to_str().context("couldn't parse the path")?;
+        let content: Vec<String> =
+            execute_and_capture_output_without_check(TRANSMISSION_SHOW, &[path])?
+                .lines()
+                .map(|s| s.to_owned())
+                .collect();
+        Ok(Self {
+            length: content.len(),
+            content,
+        })
+    }
+    fn len(&self) -> usize {
+        self.length
+    }
+}
+
 /// Common trait for many preview methods which are just a bunch of lines with
 /// no specific formatting.
 /// Some previewing (thumbnail and syntaxed text) needs more details.
@@ -1151,3 +1186,4 @@ impl_window!(Socket, String);
 impl_window!(BlockDevice, String);
 impl_window!(FifoCharDevice, String);
 impl_window!(TreeLines, TreeLineBuilder);
+impl_window!(Torrent, String);