Add JSON5 support for languages.json (#986)

3 files changed, 17 insertions, 2 deletions

diff --git a/Cargo.lock b/Cargo.lock
index a9634b9..c12f597 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -609,6 +609,17 @@ dependencies = [
 ]
 
 [[package]]
+name = "json5"
+version = "0.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "96b0db21af676c1ce64250b5f40f3ce2cf27e4e47cb91ed91eb6fe9350b430c1"
+dependencies = [
+ "pest",
+ "pest_derive",
+ "serde",
+]
+
+[[package]]
 name = "lazy_static"
 version = "1.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -1338,6 +1349,7 @@ dependencies = [
  "grep-searcher",
  "hex",
  "ignore",
+ "json5",
  "log",
  "num-format",
  "once_cell",
diff --git a/Cargo.toml b/Cargo.toml
index dd2a581..f1a6874 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -35,6 +35,7 @@ panic = "abort"
 tera = "1.15"
 ignore = "0.4"
 serde_json = "1"
+json5 = "0.4"
 
 [dependencies]
 aho-corasick = "0.7"
diff --git a/build.rs b/build.rs
index f692220..73ce01f 100644
--- a/build.rs
+++ b/build.rs
@@ -1,8 +1,9 @@
 extern crate ignore;
 extern crate serde_json;
+extern crate json5;
 
 use std::ffi::OsStr;
-use std::fs::{self, File};
+use std::fs;
 use std::path::Path;
 use std::{cmp, env, error};
 
@@ -20,7 +21,8 @@ fn main() -> Result<(), Box<dyn error::Error>> {
 fn generate_languages(out_dir: &OsStr) -> Result<(), Box<dyn error::Error>> {
     let mut tera = tera::Tera::default();
 
-    let mut json: Value = serde_json::from_reader(File::open(&"languages.json")?)?;
+    let json_string: String = fs::read_to_string("languages.json")?.parse()?;
+    let mut json: Value = json5::from_str(&json_string)?;
 
     for (_key, ref mut item) in json
         .get_mut("languages")