Fix https://github.com/ahupp/python-magic/issues/190

4 files changed, 15 insertions, 1 deletions

diff --git a/magic.py b/magic.py
index 07f7096..699e461 100644
--- a/magic.py
+++ b/magic.py
@@ -65,6 +65,15 @@ class Magic:
 
         magic_load(self.cookie, magic_file)
 
+
+        # For https://github.com/ahupp/python-magic/issues/190
+        # libmagic has fixed internal limits that some files exceed, causing 
+        # an error.  We can avoid this (at least for the sample file given) 
+        # by bumping the limit up.  It's not clear if this is a general solution
+        # or whether other internal limits should be increased, but given 
+        # the lack of other reports I'll assume this is rare.
+        self.setparam(MAGIC_PARAM_NAME_MAX, 64)
+
     def from_buffer(self, buf):
         """
         Identify the contents of `buf`
diff --git a/test/run.sh b/test/run.sh
index 63698ab..ebd7976 100755
--- a/test/run.sh
+++ b/test/run.sh
@@ -7,7 +7,7 @@ export LC_ALL=en_US.UTF-8
 THISDIR=`dirname $0`
 export PYTHONPATH=${THISDIR}/..
 
-PYTHONS="python2.7 python3.5"
+PYTHONS="python2.7 python3.5 python3.7"
 
 for pyver in $PYTHONS; do
     if which $pyver > /dev/null; then
diff --git a/test/test.py b/test/test.py
index 0f3aac2..3d835c1 100755
--- a/test/test.py
+++ b/test/test.py
@@ -148,5 +148,10 @@ class MagicTest(unittest.TestCase):
         m.setparam(magic.MAGIC_PARAM_INDIR_MAX, 1)
         self.assertEqual(m.getparam(magic.MAGIC_PARAM_INDIR_MAX), 1)
 
+    def test_name_count(self):
+        m = magic.Magic()
+        with open('testdata/python-3.7.2-python-magic-0.4.15.jpg', 'rb') as f:
+            m.from_buffer(f.read())
+
 if __name__ == '__main__':
     unittest.main()
diff --git a/test/testdata/python-3.7.2-python-magic-0.4.15.jpg b/test/testdata/python-3.7.2-python-magic-0.4.15.jpg
new file mode 100644
index 0000000..e2dc2d7
--- /dev/null
+++ b/test/testdata/python-3.7.2-python-magic-0.4.15.jpg