refactor: tidy up main and let converter know the target (#1729)

crates/typlite/src/common.rs

@@ -15,8 +15,9 @@ pub enum ListState {
 }
 
 /// Valid formats for the conversion.
-#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+#[derive(Default, Debug, Clone, Copy, PartialEq, Eq)]
 pub enum Format {
+    #[default]
     Md,
     LaTeX,
     #[cfg(feature = "docx")]

crates/typlite/src/lib.rs

@@ -127,6 +127,8 @@ pub struct TypliteFeat {
     pub soft_error: bool,
     /// Remove HTML tags from the output.
     pub remove_html: bool,
+    /// The target to convert
+    pub target: Format,
 }
 
 /// Task builder for converting a typst document to Markdown.
@@ -166,8 +168,8 @@ impl Typlite {
     /// Convert the content to a markdown string.
     pub fn convert(self) -> Result<ecow::EcoString> {
         match self.format {
-            Format::Md => self.convert_doc()?.to_md_string(),
-            Format::LaTeX => self.convert_doc()?.to_tex_string(true),
+            Format::Md => self.convert_doc(Format::Md)?.to_md_string(),
+            Format::LaTeX => self.convert_doc(Format::LaTeX)?.to_tex_string(true),
             #[cfg(feature = "docx")]
             Format::Docx => Err("docx format is not supported".into()),
         }
@@ -179,11 +181,11 @@ impl Typlite {
         if self.format != Format::Docx {
             return Err("format is not DOCX".into());
         }
-        self.convert_doc()?.to_docx()
+        self.convert_doc(Format::Docx)?.to_docx()
     }
 
     /// Convert the content to a markdown document.
-    pub fn convert_doc(self) -> Result<MarkdownDocument> {
+    pub fn convert_doc(self, format: Format) -> Result<MarkdownDocument> {
         let entry = self.world.entry_state();
         let main = entry.main();
         let current = main.ok_or("no main file in workspace")?;
@@ -236,7 +238,9 @@ impl Typlite {
         let base = typst::compile(&world)
             .output
             .map_err(|err| format!("convert source for main file: {err:?}"))?;
-        Ok(MarkdownDocument::new(base, self.feat))
+        let mut feat = self.feat;
+        feat.target = format;
+        Ok(MarkdownDocument::new(base, feat))
     }
 }
 

crates/typlite/src/main.rs

@@ -10,6 +10,7 @@ use clap::Parser;
 use tinymist_project::WorldProvider;
 use typlite::{common::Format, TypliteFeat};
 use typlite::{CompileOnceArgs, Typlite};
+use typst::foundations::Bytes;
 
 /// Common arguments of compile, watch, and query.
 #[derive(Debug, Clone, Parser, Default)]
@@ -17,9 +18,9 @@ pub struct CompileArgs {
     #[clap(flatten)]
     pub compile: CompileOnceArgs,
 
-    /// Path to output file(s)
-    #[clap(value_name = "OUTPUT", action = clap::ArgAction::Append)]
-    pub outputs: Vec<String>,
+    /// Path to output file
+    #[clap(value_name = "OUTPUT", default_value = None)]
+    pub output: Option<String>,
 
     /// Configures the path of assets directory
     #[clap(long, default_value = None, value_name = "ASSETS_PATH")]
@@ -36,13 +37,17 @@ fn main() -> typlite::Result<()> {
         .as_ref()
         .ok_or("Missing required argument: INPUT")?;
 
-    let outputs = if args.outputs.is_empty() {
-        vec![Path::new(input)
-            .with_extension("md")
-            .to_string_lossy()
-            .to_string()]
-    } else {
-        args.outputs.clone()
+    let is_stdout = args.output.as_deref() == Some("-");
+    let output_path = args
+        .output
+        .map(PathBuf::from)
+        .unwrap_or_else(|| Path::new(input).with_extension("md"));
+
+    let output_format = match output_path.extension() {
+        Some(ext) if ext == std::ffi::OsStr::new("tex") => Format::LaTeX,
+        #[cfg(feature = "docx")]
+        Some(ext) if ext == std::ffi::OsStr::new("docx") => Format::Docx,
+        _ => Format::Md,
     };
 
     let assets_path = match args.assets_path {
@@ -65,102 +70,22 @@ fn main() -> typlite::Result<()> {
         assets_path: assets_path.clone(),
         ..Default::default()
     });
-    let doc = match converter.convert_doc() {
-        Ok(doc) => doc,
-        Err(err) => return Err(format!("failed to convert document: {err}").into()),
+    let doc = converter.convert_doc(output_format)?;
+
+    let result = match output_format {
+        Format::Md => Bytes::from_string(doc.to_md_string()?),
+        Format::LaTeX => Bytes::from_string(doc.to_tex_string(true)?),
+        #[cfg(feature = "docx")]
+        Format::Docx => Bytes::new(doc.to_docx()?),
     };
 
-    for output_path in &outputs {
-        let is_stdout = output_path == "-";
-        let output = if is_stdout {
-            None
-        } else {
-            Some(PathBuf::from(output_path))
-        };
-
-        let format = match &output {
-            Some(output) if output.extension() == Some(std::ffi::OsStr::new("tex")) => {
-                Format::LaTeX
-            }
-            #[cfg(feature = "docx")]
-            Some(output) if output.extension() == Some(std::ffi::OsStr::new("docx")) => {
-                Format::Docx
-            }
-            _ => Format::Md,
-        };
-
-        match format {
-            #[cfg(feature = "docx")]
-            Format::Docx => {
-                let docx_data = match doc.to_docx() {
-                    Ok(data) => data,
-                    Err(err) => {
-                        eprintln!("Error generating DOCX for {}: {}", output_path, err);
-                        continue;
-                    }
-                };
-
-                match output {
-                    None => {
-                        eprintln!("output file is required for DOCX format");
-                        continue;
-                    }
-                    Some(output) => {
-                        if let Err(err) = std::fs::write(&output, docx_data) {
-                            eprintln!("failed to write DOCX file {}: {}", output.display(), err);
-                            continue;
-                        }
-                        println!("Generated DOCX file: {}", output.display());
-                    }
-                }
-            }
-            Format::LaTeX => {
-                let result = doc.to_tex_string(true);
-                match (result, output) {
-                    (Ok(content), None) => {
-                        std::io::stdout()
-                            .write_all(content.as_str().as_bytes())
-                            .unwrap();
-                    }
-                    (Ok(content), Some(output)) => {
-                        if let Err(err) = std::fs::write(&output, content.as_str()) {
-                            eprintln!("failed to write LaTeX file {}: {}", output.display(), err);
-                            continue;
-                        }
-                        println!("Generated LaTeX file: {}", output.display());
-                    }
-                    (Err(err), _) => {
-                        eprintln!("Error converting to LaTeX for {}: {}", output_path, err);
-                        continue;
-                    }
-                }
-            }
-            Format::Md => {
-                let result = doc.to_md_string();
-                match (result, output) {
-                    (Ok(content), None) => {
-                        std::io::stdout()
-                            .write_all(content.as_str().as_bytes())
-                            .unwrap();
-                    }
-                    (Ok(content), Some(output)) => {
-                        if let Err(err) = std::fs::write(&output, content.as_str()) {
-                            eprintln!(
-                                "failed to write Markdown file {}: {}",
-                                output.display(),
-                                err
-                            );
-                            continue;
-                        }
-                        println!("Generated Markdown file: {}", output.display());
-                    }
-                    (Err(err), _) => {
-                        eprintln!("Error converting to Markdown for {}: {}", output_path, err);
-                        continue;
-                    }
-                }
-            }
-        }
+    if is_stdout {
+        std::io::stdout().write_all(result.as_slice()).unwrap();
+    } else if let Err(err) = std::fs::write(&output_path, result.as_slice()) {
+        Err(format!(
+            "failed to write file {}: {err}",
+            output_path.display()
+        ))?;
     }
 
     Ok(())

crates/typlite/src/tests.rs

@@ -81,6 +81,13 @@ impl ConvKind {
             ConvKind::LaTeX => false,
         }
     }
+
+    fn kind(&self) -> Format {
+        match self {
+            ConvKind::Md { .. } => Format::Md,
+            ConvKind::LaTeX => Format::LaTeX,
+        }
+    }
 }
 
 fn conv(world: LspWorld, kind: ConvKind) -> String {
@@ -88,7 +95,7 @@ fn conv(world: LspWorld, kind: ConvKind) -> String {
         annotate_elem: kind.for_docs(),
         ..Default::default()
     });
-    let doc = match converter.convert_doc() {
+    let doc = match converter.convert_doc(kind.kind()) {
         Ok(doc) => doc,
         Err(err) => return format!("failed to convert to markdown: {err}"),
     };