From 761f8cee245d9dabda538e752e9add576ea1f0c5 Mon Sep 17 00:00:00 2001
From: Daniel Kimsey <dkimsey@trustwave.com>
Date: Tue, 12 May 2020 15:11:49 -0500
Subject: [PATCH] Ignore CSS declaration with empty content attribute

I ran into an issue where the CSS parsing would break when the content attribute was empty. This change will make those declaration NOOPs and skip them.

Example erroring declaration:
```
.fa-borders:before{
  content:"";
  border: #000000 1px solid;
  padding:1px;
  border-radius:3px;
  font-size:95%;
  width:16px;
  height:16px;
  display:block
}
```
---
 icon_font_to_png/icon_font.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/icon_font_to_png/icon_font.py b/icon_font_to_png/icon_font.py
index d0eadf8..e94ea50 100644
--- a/icon_font_to_png/icon_font.py
+++ b/icon_font_to_png/icon_font.py
@@ -60,6 +60,8 @@ def load_css(self):
                         # Strip quotation marks
                         if re.match("^['\"].*['\"]$", val):
                             val = val[1:-1]
+                        if val[1:] == "":
+                            continue
                         icons[name] = unichr(int(val[1:], 16))
 
         common_prefix = common_prefix or ''