From 5aeb5f79d83a2559671fed6d9afed2b0987139b4 Mon Sep 17 00:00:00 2001
From: Bryan Newbold <bnewbold@robocracy.org>
Date: Wed, 23 Jan 2019 15:33:44 -0800
Subject: ftfy all over (needs Pipfile.lock)

---
 python/fatcat_tools/importers/common.py | 31 +++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)

(limited to 'python/fatcat_tools/importers/common.py')

diff --git a/python/fatcat_tools/importers/common.py b/python/fatcat_tools/importers/common.py
index 2d5c89b3..1c99c7d7 100644
--- a/python/fatcat_tools/importers/common.py
+++ b/python/fatcat_tools/importers/common.py
@@ -3,6 +3,7 @@ import re
 import sys
 import csv
 import json
+import ftfy
 import itertools
 import subprocess
 from collections import Counter
@@ -12,6 +13,36 @@ import fatcat_client
 from fatcat_client.rest import ApiException
 
 
+def clean(thing, force_xml=False):
+    """
+    This function is appropriate to be called on any random, non-markup string,
+    such as author names, titles, etc.
+
+    It will try to clean up commong unicode mangles, HTML characters, etc.
+
+    This will detect XML/HTML and "do the right thing" (aka, not remove
+    entities like '&amp' if there are tags in the string), unless you pass the
+    'force_xml' parameter, which might be appropriate for, eg, names and
+    titles, which generally should be projected down to plain text.
+
+    Also strips extra whitespace.
+    """
+    if not thing:
+        return thing
+    fix_entities = 'auto'
+    if force_xml:
+        fix_entities = True
+    return ftfy.fix_text(thing, fix_entities=fix_entities).strip()
+
+def test_clean():
+
+    assert clean(None) == None
+    assert clean('') == ''
+    assert clean('123') == '123'
+    assert clean('a&amp;b') == 'a&b'
+    assert clean('<b>a&amp;b</b>') == '<b>a&amp;b</b>'
+    assert clean('<b>a&amp;b</b>', force_xml=True) == '<b>a&b</b>'
+
 class EntityImporter:
     """
     Base class for fatcat entity importers.
-- 
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