Allow to create case sensitive matches

src/documents/migrations/0015_add_insensitive_to_match.py

@@ -0,0 +1,25 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.10.2 on 2016-10-05 21:38
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('documents', '0014_document_checksum'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='correspondent',
+            name='is_insensitive',
+            field=models.BooleanField(default=True),
+        ),
+        migrations.AddField(
+            model_name='tag',
+            name='is_insensitive',
+            field=models.BooleanField(default=True),
+        ),
+    ]

src/documents/models.py

@@ -47,6 +47,8 @@ class MatchingModel(models.Model):
         )
     )
 
+    is_insensitive = models.BooleanField(default=True)
+
     class Meta(object):
         abstract = True
 
@@ -71,27 +73,32 @@ class MatchingModel(models.Model):
 
     def matches(self, text):
 
+        search_kwargs = {}
+
         # Check that match is not empty
         if self.match.strip() == "":
             return False
 
+        if self.is_insensitive:
+            search_kwargs = {"flags": re.IGNORECASE}
+
         if self.matching_algorithm == self.MATCH_ALL:
             for word in self.match.split(" "):
-                if not re.search(r"\b{}\b".format(word), text):
+                if not re.search(r"\b{}\b".format(word), text, **search_kwargs):
                     return False
             return True
 
         if self.matching_algorithm == self.MATCH_ANY:
             for word in self.match.split(" "):
-                if re.search(r"\b{}\b".format(word), text):
+                if re.search(r"\b{}\b".format(word), text, **search_kwargs):
                     return True
             return False
 
         if self.matching_algorithm == self.MATCH_LITERAL:
-            return bool(re.search(r"\b{}\b".format(self.match), text))
+            return bool(re.search(r"\b{}\b".format(self.match), text, **search_kwargs))
 
         if self.matching_algorithm == self.MATCH_REGEX:
-            return bool(re.search(re.compile(self.match), text))
+            return bool(re.search(re.compile(self.match), text, **search_kwargs))
 
         raise NotImplementedError("Unsupported matching algorithm")