Improve performance of pygments->mime2lexer

Normal arrays are rather slow when accessed sequentially. Use
associative arrays and key lookups to reduce the render time of a
multipaste with 180 items from 225ms to ~190ms.

Signed-off-by: Florian Pritz <bluewind@xinu.at>

1 files changed, 6 insertions, 3 deletions

diff --git a/scripts/get_lexer_list.py b/scripts/get_lexer_list.py
index 0ef6fe97a..9453ff733 100755
--- a/scripts/get_lexer_list.py
+++ b/scripts/get_lexer_list.py
@@ -5,11 +5,14 @@ import json
 
 ret = []
 
+def dictify(list):
+    return {k:True for k in list}
+
 for fullname, names, exts, mimetypes in pygments.lexers.get_all_lexers():
     ret.append({
         'fullname': fullname,
-        'names': names,
-        'extentions': exts,
-        'mimetypes': mimetypes,
+        'names': dictify(names),
+        'extentions': dictify(exts),
+        'mimetypes': dictify(mimetypes),
         })
 print(json.dumps(ret))