feat(*): restore standalone split feature

crates/cli/src/cli.rs

@@ -3,7 +3,7 @@ use clap::{crate_version, Parser, Subcommand};
 use crate::alias::AliasCommands;
 use crate::{
     CompileArgs, DownloadArgs, DumpArgs, IndexArgs, InfoArgs, LexiconArgs, LookupArgs, MergeArgs,
-    NewArgs, SearchArgs, ServeArgs, TokenizeArgs,
+    NewArgs, SearchArgs, ServeArgs, SplitArgs, TokenizeArgs,
 };
 
 #[derive(Debug, Parser)]
@@ -71,6 +71,10 @@ pub enum Commands {
     #[command(arg_required_else_help = true)]
     Serve(ServeArgs),
 
+    /// Splits text into component dictionary words without attempting a whole-word lookup first
+    #[command(arg_required_else_help = true)]
+    Split(SplitArgs),
+
     /// Tokenize text and find dictionary entries for each token
     #[command(arg_required_else_help = true)]
     Tokenize(TokenizeArgs),

crates/cli/src/lib.rs

@@ -15,6 +15,7 @@ mod new;
 mod print;
 mod search;
 mod serve;
+mod split;
 mod tokenize;
 mod utils;
 
@@ -34,5 +35,6 @@ pub use new::*;
 pub use print::*;
 pub use search::*;
 pub use serve::*;
+pub use split::*;
 pub use tokenize::*;
 pub use utils::*;

crates/cli/src/main.rs

@@ -1,7 +1,7 @@
 use clap::Parser;
 use console::style;
 use odict_cli::{
-    alias, compile, download, dump, index, info, lexicon, lookup, merge, new, search, serve,
+    alias, compile, download, dump, index, info, lexicon, lookup, merge, new, search, serve, split,
     tokenize, CLIContext, Commands, CLI,
 };
 
@@ -23,6 +23,7 @@ async fn main() {
         Commands::Search(ref args) => search(&mut ctx, args).await,
         Commands::Serve(ref args) => serve(&mut ctx, args).await,
         Commands::Info(ref args) => info(&mut ctx, args).await,
+        Commands::Split(ref args) => split(&mut ctx, args).await,
         Commands::Tokenize(ref args) => tokenize(&mut ctx, args).await,
     };
 

crates/cli/src/serve/mod.rs

@@ -18,6 +18,7 @@ use crate::CLIContext;
 
 mod lookup;
 mod search;
+mod split;
 mod tokenize;
 
 #[derive(Debug, Clone, ValueEnum)]
@@ -174,6 +175,7 @@ pub async fn serve<'a>(ctx: &mut CLIContext<'a>, args: &ServeArgs) -> anyhow::Re
             .app_data(Data::clone(&data))
             .service(lookup::handle_lookup)
             .service(search::handle_search)
+            .service(split::handle_split)
             .service(tokenize::handle_tokenize)
     })
     .bind(("0.0.0.0", *port))?

crates/cli/src/serve/split.rs

@@ -0,0 +1,104 @@
+use actix_web::{
+    get,
+    http::{header::ContentType, StatusCode},
+    web::{Data, Path, Query},
+    HttpResponse, Responder, ResponseError,
+};
+use derive_more::{Display, Error};
+use odict::{format::json::ToJSON, split::SplitOptions};
+use serde::Deserialize;
+
+use crate::get_lookup_entries;
+
+#[derive(Debug, Deserialize)]
+pub struct SplitRequest {
+    q: String,
+    follow: Option<bool>,
+    min_length: Option<usize>,
+}
+
+#[derive(Debug, Display, Error)]
+enum SplitError {
+    #[display("Dictionary not found: {}", name)]
+    DictionaryNotFound { name: String },
+
+    #[display("Failed to read dictionary: {}", name)]
+    DictionaryReadError { name: String },
+
+    #[display("Split error: {}", message)]
+    SplitError { message: String },
+
+    #[display("Failed to serialize response")]
+    SerializeError,
+}
+
+impl ResponseError for SplitError {
+    fn error_response(&self) -> HttpResponse {
+        HttpResponse::build(self.status_code())
+            .insert_header(ContentType::html())
+            .body(self.to_string())
+    }
+
+    fn status_code(&self) -> StatusCode {
+        match *self {
+            SplitError::DictionaryNotFound { .. } => StatusCode::NOT_FOUND,
+            SplitError::DictionaryReadError { .. } => StatusCode::INTERNAL_SERVER_ERROR,
+            SplitError::SplitError { .. } => StatusCode::INTERNAL_SERVER_ERROR,
+            SplitError::SerializeError => StatusCode::INTERNAL_SERVER_ERROR,
+        }
+    }
+}
+
+#[get("/{name}/split")]
+async fn handle_split(
+    params: Query<SplitRequest>,
+    dict: Path<String>,
+    dictionary_cache: Data<crate::serve::DictionaryCache>,
+) -> Result<impl Responder, SplitError> {
+    let SplitRequest {
+        q: raw_queries,
+        follow,
+        min_length,
+    } = params.0;
+
+    let queries = raw_queries
+        .split(',')
+        .map(|s| s.to_string())
+        .collect::<Vec<_>>();
+
+    let dictionary_name = dict.into_inner();
+
+    let file = dictionary_cache
+        .get(&dictionary_name)
+        .await
+        .map_err(|_e| SplitError::DictionaryReadError {
+            name: dictionary_name.to_string(),
+        })?
+        .ok_or(SplitError::DictionaryNotFound {
+            name: dictionary_name.to_string(),
+        })?;
+
+    let dictionary = file
+        .contents()
+        .map_err(|_e| SplitError::DictionaryReadError {
+            name: dictionary_name.to_string(),
+        })?;
+
+    let opts = SplitOptions::default()
+        .threshold(min_length.unwrap_or(1))
+        .follow(follow.unwrap_or(false));
+
+    let entries = dictionary
+        .split(&queries, &opts)
+        .map_err(|e| SplitError::SplitError {
+            message: e.to_string(),
+        })?;
+
+    let json = get_lookup_entries(entries)
+        .to_json(true)
+        .map_err(|_e| SplitError::SerializeError)?;
+
+    Ok(HttpResponse::Ok()
+        .content_type("application/json")
+        .body(json))
+}

crates/cli/src/split.rs

@@ -0,0 +1,98 @@
+use std::time::Duration;
+
+use crate::enums::PrintFormat;
+use crate::get_lookup_entries;
+use crate::{context::CLIContext, print_entries};
+use clap::Args;
+use odict::{download::DictionaryDownloader, split::SplitOptions, LoadOptions, OpenDictionary};
+
+#[derive(Debug, Args)]
+#[command(args_conflicts_with_subcommands = true)]
+#[command(flatten_help = true)]
+pub struct SplitArgs {
+    #[arg(required = true, help = "Path to a compiled dictionary")]
+    dictionary_path: String,
+
+    #[arg(required = true, help = "Text to split into dictionary words")]
+    queries: Vec<String>,
+
+    #[arg(
+        short,
+        long,
+        value_enum,
+        default_value_t = PrintFormat::Print,
+        help = "Output format of the entries"
+    )]
+    format: PrintFormat,
+
+    #[arg(
+        short = 'F',
+        long,
+        help = "Follow see_also redirects until finding an entry with etymologies"
+    )]
+    follow: bool,
+
+    #[arg(
+        short = 'm',
+        long,
+        default_value_t = 1,
+        help = "Minimum character length of each split segment"
+    )]
+    min_length: usize,
+
+    #[arg(
+        short = 'i',
+        long,
+        default_value_t = false,
+        help = "Perform case-insensitive lookups"
+    )]
+    insensitive: bool,
+
+    #[arg(
+        short = 'r',
+        long,
+        default_value_t = crate::DEFAULT_RETRIES,
+        help = "Number of times to retry loading the dictionary (remote-only)"
+    )]
+    retries: u32,
+}
+
+pub async fn split<'a>(ctx: &mut CLIContext<'a>, args: &SplitArgs) -> anyhow::Result<()> {
+    let SplitArgs {
+        dictionary_path: path,
+        queries,
+        format,
+        follow,
+        min_length,
+        insensitive,
+        retries,
+    } = args;
+
+    let spinner = indicatif::ProgressBar::new_spinner();
+
+    spinner.enable_steady_tick(Duration::from_millis(100));
+
+    let file = OpenDictionary::load_with_options(
+        path,
+        LoadOptions::default()
+            .with_downloader(DictionaryDownloader::default().with_retries(*retries)),
+    )
+    .await?;
+
+    let opts = SplitOptions::default()
+        .threshold(*min_length)
+        .follow(*follow)
+        .insensitive(*insensitive);
+
+    let result = file.contents()?.split(queries, opts);
+
+    spinner.finish_and_clear();
+
+    match result {
+        Ok(entries) => {
+            print_entries(ctx, get_lookup_entries(entries), format)?;
+            Ok(())
+        }
+        Err(err) => Err(anyhow::Error::from(err)),
+    }
+}

crates/lib/src/core/lookup.rs

@@ -132,6 +132,47 @@ macro_rules! lookup {
                 Ok($opt::None)
             }
 
+            fn perform_split<'a>(
+                &'a self,
+                query: &str,
+                options: &crate::split::SplitOptions,
+            ) -> crate::Result<Vec<LookupResult<&'a $ret>>> {
+                let crate::split::SplitOptions {
+                    threshold,
+                    follow,
+                    insensitive,
+                } = options;
+
+                let chars: Vec<_> = query.chars().collect();
+                let mut results: Vec<LookupResult<&'a $ret>> = Vec::new();
+                let mut start = 0;
+                let mut end = chars.len();
+
+                while start < end {
+                    let substr: String = chars[start..end].iter().collect();
+                    let mut path = Vec::new();
+
+                    match self.find_entry(follow, insensitive, substr.as_str(), None, &mut path) {
+                        Ok($opt::Some(result)) => {
+                            results.push(result);
+                            start = end;
+                            end = chars.len();
+                        }
+                        Ok($opt::None) => {
+                            if end - start <= *threshold {
+                                start = end;
+                                end = chars.len();
+                            } else {
+                                end -= 1;
+                            }
+                        }
+                        Err(e) => return Err(e),
+                    }
+                }
+
+                Ok(results)
+            }
+
             fn perform_lookup<'a, Options>(
                 &'a self,
                 query: &str,
@@ -154,46 +195,32 @@ macro_rules! lookup {
                     return Ok(vec![result]);
                 }
 
-                let mut results: Vec<LookupResult<&$ret>> = Vec::new();
-
                 if let LookupStrategy::Split(min_length) = strategy {
-                    let chars: Vec<_> = query.chars().collect();
-                    let mut start = 0;
-                    let mut end = chars.len();
-
-                    while start < end {
-                        let substr: String = chars[start..end].iter().collect();
-                        let mut substr_path = Vec::new();
-                        let maybe_entry = self.find_entry(
-                            follow,
-                            insensitive,
-                            substr.as_str(),
-                            None,
-                            &mut substr_path,
-                        );
-
-                        match maybe_entry {
-                            Ok($opt::Some(result)) => {
-                                results.push(result);
-                                start = end;
-                                end = chars.len();
-                                continue;
-                            }
-                            Ok($opt::None) => {
-                                if substr.len() <= *min_length {
-                                    start = end;
-                                    end = chars.len();
-                                    continue;
-                                }
-                            }
-                            Err(e) => return Err(e),
-                        }
+                    let split_opts = crate::split::SplitOptions::default()
+                        .threshold(*min_length)
+                        .follow(*follow)
+                        .insensitive(*insensitive);
 
-                        end -= 1;
-                    }
+                    return self.perform_split(query, &split_opts);
                 }
 
-                Ok(results)
+                Ok(vec![])
+            }
+
+            pub fn split<'a, Query, Options>(
+                &'a self,
+                queries: &Vec<Query>,
+                options: Options,
+            ) -> crate::Result<Vec<LookupResult<&'a $ret>>>
+            where
+                Query: AsRef<str> + Send + Sync,
+                Options: AsRef<crate::split::SplitOptions> + Send + Sync,
+            {
+                queries
+                    .par_iter()
+                    .map(|q| self.perform_split(q.as_ref(), options.as_ref()))
+                    .collect::<crate::Result<Vec<_>>>()
+                    .map(|v| v.into_iter().flatten().collect())
             }
 
             pub fn lookup<'a, 'b, Query, Options>(

crates/lib/src/core/mod.rs

@@ -4,6 +4,7 @@ pub mod compile;
 pub mod lexicon;
 pub mod lookup;
 pub mod merge;
+pub mod split;
 pub mod preview;
 pub mod rank;
 pub mod read;