Added interactive mode

src/main.rs

@@ -170,11 +170,11 @@ fn handle_connection(context: Arc<Mutex<Context>>, path: PathBuf, mut stream: Tc
     let mut pk_path = path.to_path_buf();
     let mut data_path = path.to_path_buf();
 
-    let (pki_path, start_level, relative_path) = if relative_path.is_empty() {
+    let (pki_path, start_level, relative_path, partial) = if relative_path.is_empty() {
         pk_path.push("index.pk");
         data_path.push("index.dat");
 
-        (None, 0, String::new())
+        (None, 0, String::new(), None)
     } else {
         let mut pki_path = path.to_path_buf();
 
@@ -186,11 +186,17 @@ fn handle_connection(context: Arc<Mutex<Context>>, path: PathBuf, mut stream: Tc
             return;
         }
 
+        let (path, num) = if let Some((path, num)) = path.rsplit_once('=') {
+            (path, num.parse::<usize>().ok())
+        } else {
+            (path.as_ref(), None)
+        };
+
         pk_path.push(format!("{path}.pk"));
         pki_path.push(format!("{path}.pki"));
         data_path.push(format!("{path}.dat"));
 
-        (Some(pki_path), 1, path.to_string())
+        (Some(pki_path), 1, path.to_string(), num)
     };
 
     if relative_path.split('/').any(|name| name == "Images") {
@@ -240,6 +246,7 @@ fn handle_connection(context: Arc<Mutex<Context>>, path: PathBuf, mut stream: Tc
         &pk_path,
         pki_path.as_ref().map(|path| path.as_ref()),
         &data_path,
+        partial,
         start_level,
     )
 }
@@ -290,6 +297,7 @@ fn handle_relative_connection(
     pk_path: &Path,
     pki_path: Option<&Path>,
     data_path: &Path,
+    partial: Option<usize>,
     start_level: usize,
 ) {
     let mut name = None;
@@ -409,16 +417,81 @@ fn handle_relative_connection(
     };
 
     if let Ok(pk_file) = File::open(pk_path) {
+        let lines = BufReader::new(pk_file).lines();
+
+        if let Some(i) = partial {
+            let mut last_empty = true;
+            let mut block = 0;
+            let lines: Vec<_> = lines.map(|line| line.unwrap_or_default()).collect();
+            let mut lines = lines.into_iter();
+            if i > 0 {
+                while let Some(line) = lines.next() {
+                    let empty = line.trim().is_empty();
+                    if empty == last_empty {
+                        continue;
+                    }
+                    if empty {
+                        block += 1;
+                        if block == i {
+                            break;
+                        }
+                    }
+                    last_empty = empty;
+                }
+            }
+
+            if i > 0 {
+                let prev = i - 1;
+                let _ = writeln!(stream, "<a href=\"/{relative_path}={prev}\">&lt; Prev</a>");
+            } else {
+                let _ = writeln!(stream, "<font color=\"gray\">&lt; Prev</font>");
+            }
+
+            for line in lines.clone() {
+                let empty = line.trim().is_empty();
+                if empty == last_empty {
+                    continue;
+                }
+                if empty {
+                    block += 1;
+                }
+                last_empty = empty;
+            }
+            if i + 1 < block {
+                let next = i + 1;
+                let _ = writeln!(stream, "<a href=\"/{relative_path}={next}\">Next &gt;</a>");
+            } else {
+                let _ = writeln!(stream, "<font color=\"gray\">Next &gt;</font>");
+            }
+
+            let mut has_text = false;
             convert_extended(
-            BufReader::new(pk_file)
-                .lines()
-                .map(|line| line.unwrap_or_default()),
+                lines
+                    .take_while(|line| {
+                        let empty = line.trim().is_empty();
+                        if !empty {
+                            has_text = true;
+                        }
+                        !empty || !has_text
+                    })
+                    .chain(std::iter::once(String::new())),
                 &mut stream,
                 Settings::default()
                     .with_handler(handle_entry)
                     .with_start_level(start_level)
                     .with_use_textboxes(true),
             );
+        } else {
+            let _ = writeln!(stream, "<a href=\"/{relative_path}=0\">&lt; Play &gt;</a>");
+            convert_extended(
+                lines.map(|line| line.unwrap_or_default()),
+                &mut stream,
+                Settings::default()
+                    .with_handler(handle_entry)
+                    .with_start_level(start_level)
+                    .with_use_textboxes(true),
+            );
+        }
     } else {
         unreachable!();
     }
@@ -434,15 +507,64 @@ fn handle_relative_connection(
     if let Some(pki_path) = pki_path {
         if let Ok(pki_file) = File::open(pki_path) {
             let _ = writeln!(stream, "<h1>Description</h1>");
+            let lines = BufReader::new(pki_file).lines();
 
+            if let Some(i) = partial {
+                let mut last_empty = true;
+                let mut block = 0;
+                let lines: Vec<_> = lines.map(|line| line.unwrap_or_default()).collect();
+                let mut lines = lines.into_iter();
+                if i > 0 {
+                    while let Some(line) = lines.next() {
+                        let empty = line.trim().is_empty();
+                        if empty == last_empty {
+                            continue;
+                        }
+                        if empty {
+                            block += 1;
+                            if block == i {
+                                break;
+                            }
+                        }
+                        last_empty = empty;
+                    }
+                }
                 convert_subheader(
-                BufReader::new(pki_file)
-                    .lines()
-                    .map(|line| line.unwrap_or_default()),
+                    lines
+                        .clone()
+                        .take_while(|line| {
+                            let empty = line.trim().is_empty();
+                            last_empty = empty;
+                            empty && !last_empty
+                        })
+                        .chain(std::iter::once(String::new())),
                     &mut stream,
                     1,
                 );
 
+                if i > 0 {
+                    let prev = i - 1;
+                    let _ = writeln!(stream, "<a href=\"/{relative_path}={prev}\">&lt; Prev</a>");
+                }
+
+                for line in lines {
+                    let empty = line.trim().is_empty();
+                    if empty == last_empty {
+                        continue;
+                    }
+                    if empty {
+                        block += 1;
+                    }
+                    last_empty = empty;
+                }
+                if i + 1 < block {
+                    let next = i + 1;
+                    let _ = writeln!(stream, "<a href=\"/{relative_path}={next}\">Next &gt;</a>");
+                }
+            } else {
+                convert_subheader(lines.map(|line| line.unwrap_or_default()), &mut stream, 1);
+            }
+
             let _ = writeln!(stream, "<hr>");
             let _ = writeln!(stream, "<a href=\"/{parent_path}\">&lt;&lt; Back</a>");
         } else {