From a6665edbf0bbf24f20da96cf435153846d7a8488 Mon Sep 17 00:00:00 2001
From: Ben Pfaff <blp@cs.stanford.edu>
Date: Tue, 1 Aug 2023 22:21:13 -0700
Subject: [PATCH] converters maps work

---
 rust/build.rs | 40 ++++++++++++++++++++++++++++------------
 1 file changed, 28 insertions(+), 12 deletions(-)

diff --git a/rust/build.rs b/rust/build.rs
index 5b6c2dfea5..a12d862e48 100644
--- a/rust/build.rs
+++ b/rust/build.rs
@@ -94,30 +94,39 @@ fn write_output(
 ) -> Result<(), IoError> {
     let mut file = File::create(file_name)?;
 
-    write!(file, "{}", "\
+    write!(
+        file,
+        "{}",
+        "\
 use lazy_static::lazy_static;
 use std::collections::HashMap;
 
 lazy_static! {
     static ref CODEPAGE_NUMBER_TO_NAME: HashMap<u32, &'static str> = {
         let mut map = HashMap::new();
-")?;
+"
+    )?;
 
     for (&cpnumber, value) in codepages.iter() {
         let source = value.keys().max().unwrap();
         let name = value[source][0];
         writeln!(file, "        map.insert({cpnumber}, \"{name}\");")?;
     }
-    write!(file, "{}", "\
-        map
+    write!(
+        file,
+        "{}",
+        "        map
     };
-}
-")?;
 
-    let mut names: BTreeMap<&str, BTreeMap<Source, Vec<CPNumber>>> = BTreeMap::new();
+    static ref CODEPAGE_NAME_TO_NUMBER: HashMap<&'static str, u32> = {
+        let mut map = HashMap::new();
+"
+    )?;
+
+    let mut names: BTreeMap<String, BTreeMap<Source, Vec<CPNumber>>> = BTreeMap::new();
     for (&cpnumber, value) in codepages.iter() {
         for (&source, value2) in value.iter() {
-            for &name in value2.iter() {
+            for name in value2.iter().map(|name| name.to_ascii_lowercase()) {
                 names
                     .entry(name)
                     .or_insert_with(BTreeMap::new)
@@ -128,12 +137,19 @@ lazy_static! {
         }
     }
 
-    for (&name, value) in names.iter() {
-        for (_source, numbers) in value.iter().rev() {
-            println!("  {{ {}, \"{name}\" }},", numbers[0]);
-            break;
+    for (name, value) in names.iter() {
+        for (_source, numbers) in value.iter().rev().take(1) {
+            writeln!(file, "        map.insert(\"{name}\", {});", numbers[0])?;
         }
     }
+    write!(
+        file,
+        "{}",
+        "        map
+    };
+}
+"
+    )?;
 
     Ok(())
 }
-- 
2.30.2