Rely on a more robust entry parser | #9

Cargo.lock

@@ -1,5 +1,11 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
+[[package]]
+name = "anyhow"
+version = "1.0.31"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "85bb70cc08ec97ca5450e6eba421deeea5f172c0fc61f78b5357b2a8e8be195f"
+
 [[package]]
 name = "arrayref"
 version = "0.3.6"
@@ -285,6 +291,16 @@ version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "00b0228411908ca8685dba7fc2cdd70ec9990a6e753e89b6ac91a84c40fbaf4b"
 
+[[package]]
+name = "freedesktop_entry_parser"
+version = "0.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0e71e40cde9e00afcb8c5f4e3339f72dae1fb0b30f299d54b690ceb6ce11f3e3"
+dependencies = [
+ "anyhow",
+ "nom",
+]
+
 [[package]]
 name = "fuchsia-zircon"
 version = "0.3.3"
@@ -393,6 +409,7 @@ dependencies = [
  "atty",
  "clap",
  "confy",
+ "freedesktop_entry_parser",
  "itertools",
  "json",
  "mime",

Cargo.toml

@@ -24,6 +24,7 @@ atty = "0.2.14"
 confy = "0.4.0"
 serde = "1.0.111"
 xdg-mime = "0.3.2"
+freedesktop_entry_parser = "0.2.2"
 
 [profile.release]
 opt-level=3

src/common/desktop_entry.rs

@@ -1,6 +1,5 @@
 use crate::{Error, Result};
 use mime::Mime;
-use pest::Parser;
 use std::{
     convert::TryFrom,
     ffi::OsString,
@@ -9,8 +8,7 @@ use std::{
     str::FromStr,
 };
 
-#[derive(Debug, Clone, pest_derive::Parser, Default, PartialEq, Eq)]
-#[grammar = "common/ini.pest"]
+#[derive(Debug, Clone, Default, PartialEq, Eq)]
 pub struct DesktopEntry {
     pub(crate) name: String,
     pub(crate) exec: String,
@@ -77,39 +75,32 @@ impl DesktopEntry {
 }
 
 fn parse_file(path: &Path) -> Option<DesktopEntry> {
-    let raw = std::fs::read_to_string(&path).ok()?;
-    let file = DesktopEntry::parse(Rule::file, &raw).ok()?.next()?;
+    let raw = std::fs::read(&path).ok()?;
+    let parsed = freedesktop_entry_parser::parse_entry(&raw)
+        .filter_map(Result::ok)
+        .find(|s| s.title == b"Desktop Entry")?;
 
     let mut entry = DesktopEntry::default();
     entry.file_name = path.file_name()?.to_owned();
 
-    let mut section = "";
-
-    for line in file.into_inner() {
-        match line.as_rule() {
-            Rule::section => section = line.into_inner().as_str(),
-            Rule::property if section == "Desktop Entry" => {
-                let mut inner = line.into_inner(); // { name ~ "=" ~ value }
-
-                match inner.next()?.as_str() {
-                    "Name" if entry.name == "" => {
-                        entry.name = inner.next()?.as_str().into()
+    for attr in parsed.attrs {
+        match attr.name {
+            b"Name" if entry.name == "" => {
+                entry.name = String::from_utf8(attr.value.into()).ok()?;
             }
-                    "Exec" => entry.exec = inner.next()?.as_str().into(),
-                    "MimeType" => {
-                        let mut mimes = inner
-                            .next()?
-                            .as_str()
+            b"Exec" => {
+                entry.exec = String::from_utf8(attr.value.into()).ok()?
+            }
+            b"MimeType" => {
+                let mut mimes = String::from_utf8(attr.value.into())
+                    .ok()?
                     .split(";")
                     .filter_map(|m| Mime::from_str(m).ok())
                     .collect::<Vec<_>>();
                 mimes.pop();
                 entry.mimes = mimes;
             }
-                    "Terminal" => entry.term = inner.next()?.as_str() == "true",
-                    _ => {}
-                }
-            }
+            b"Terminal" => entry.term = attr.value == b"true",
             _ => {}
         }
     }
@@ -127,3 +118,14 @@ impl TryFrom<PathBuf> for DesktopEntry {
         parse_file(&path).ok_or(Error::BadEntry(path))
     }
 }
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn complex_exec() {
+        let path = PathBuf::from("tests/cmus.desktop");
+        parse_file(&*path).unwrap();
+    }
+}

src/common/mime_types.rs

@@ -84,8 +84,11 @@ mod tests {
     #[test]
     fn from_path() -> Result<()> {
         assert_eq!(MimeType::try_from(".")?.0.essence_str(), "inode/directory");
-        assert_eq!(MimeType::try_from("./tests/cat")?.0.type_(), "text");
-        assert_eq!(MimeType::try_from("./tests/rust.vim")?.0.type_(), "text");
+        assert_eq!(MimeType::try_from("./tests/rust.vim")?.0, "text/plain");
+        assert_eq!(
+            MimeType::try_from("./tests/cat")?.0,
+            "application/x-shellscript"
+        );
 
         Ok(())
     }

src/common/mod.rs

@@ -4,6 +4,6 @@ mod handler;
 mod mime_types;
 
 pub use self::db::autocomplete as db_autocomplete;
-pub use desktop_entry::{DesktopEntry, Mode as ExecMode, Rule as EntryRule};
+pub use desktop_entry::{DesktopEntry, Mode as ExecMode};
 pub use handler::Handler;
 pub use mime_types::{MimeOrExtension, MimeType};

src/error.rs

@@ -1,7 +1,5 @@
 #[derive(Debug, thiserror::Error)]
 pub enum Error {
-    #[error(transparent)]
-    ParseEntry(#[from] pest::error::Error<crate::common::EntryRule>),
     #[error(transparent)]
     ParseApps(#[from] pest::error::Error<crate::apps::MimeappsRule>),
     #[error(transparent)]

tests/cmus.desktop

@@ -0,0 +1,11 @@
+[Desktop Entry]
+Encoding=UTF-8
+Version=1.0
+Type=Application
+Display=true
+Exec=bash -c "(! pgrep cmus && tilix -e cmus && tilix -a session-add-down -e cava); sleep 0.1 && cmus-remote -q %f"
+Terminal=false
+Name=cmus-remote
+Comment=Music player cmus-remote control
+NoDisplay=true
+Icon=cmus

tests/rust.vim

@@ -1,2 +1,3 @@
-#!/bin/sh
-bat "$@"
+highlight CocRustChainingHint ctermfg=0
+hi link rustDerive SpecialComment
+hi link rustDeriveTrait SpecialComment