From 1dd5e731c14cb570bbe772f466e8113e653b70ca Mon Sep 17 00:00:00 2001
From: Francois Dang Ngoc <francois.dangngoc@gmail.com>
Date: Sat, 5 May 2018 00:39:51 -0400
Subject: [PATCH] Fixed escaped quotes inside quoted and unquoted string. This
 should address #96 and #138

---
 pyhocon/config_parser.py    |  6 +++---
 tests/test_config_parser.py | 28 ++++++++++++++++++++++++----
 2 files changed, 27 insertions(+), 7 deletions(-)

diff --git a/pyhocon/config_parser.py b/pyhocon/config_parser.py
index 2bbeb71c..50f35bba 100644
--- a/pyhocon/config_parser.py
+++ b/pyhocon/config_parser.py
@@ -175,7 +175,7 @@ def create_substitution(instring, loc, token):
             return substitution
 
         # ${path} or ${?path} for optional substitution
-        STRING_PATTERN = '(")(?P<value>[^"]*)\\1(?P<ws>[ \t]*)'
+        STRING_PATTERN = '"(?P<value>(?:[^"\\\\]|\\\\.)*)"(?P<ws>[ \t]*)'
 
         def create_quoted_string(instring, loc, token):
             # remove the ${ and }
@@ -240,13 +240,13 @@ def include_config(instring, loc, token):
         # Using fix described in http://pyparsing.wikispaces.com/share/view/3778969
         multiline_string = Regex('""".*?"*"""', re.DOTALL | re.UNICODE).setParseAction(parse_multi_string)
         # single quoted line string
-        quoted_string = Regex('".*?"[ \t]*', re.UNICODE).setParseAction(create_quoted_string)
+        quoted_string = Regex('"(?:[^"\\\\\n]|\\\\.)*"[ \t]*', re.UNICODE).setParseAction(create_quoted_string)
         # unquoted string that takes the rest of the line until an optional comment
         # we support .properties multiline support which is like this:
         # line1  \
         # line2 \
         # so a backslash precedes the \n
-        unquoted_string = Regex('(?:\\\\|[^\[\{\s\]\}#,=\$])+[ \t]*', re.UNICODE).setParseAction(unescape_string)
+        unquoted_string = Regex('(?:[^"\[\{\s\]\}#,=\$\\\\]|\\\\.)+[ \t]*', re.UNICODE).setParseAction(unescape_string)
         substitution_expr = Regex('[ \t]*\$\{[^\}]+\}[ \t]*').setParseAction(create_substitution)
         string_expr = multiline_string | quoted_string | unquoted_string
 
diff --git a/tests/test_config_parser.py b/tests/test_config_parser.py
index e57b3fa7..9419ad97 100644
--- a/tests/test_config_parser.py
+++ b/tests/test_config_parser.py
@@ -1132,14 +1132,15 @@ def test_include_required_file(self):
             }
             """
         )
-        assert {
+        expected = {
             'a': {
                 'garfield': {
                     'say': 'meow'
                 },
                 't': 2
             }
-        } == config
+        }
+        assert expected == config
 
     def test_include_missing_required_file(self):
         with pytest.raises(IOError):
@@ -2040,9 +2041,10 @@ def test_pop(self):
         config_tree = ConfigFactory.parse_string('a:{b: 3, d: 6}')
         assert 3 == config_tree.pop('a.b', 5)
         assert 5 == config_tree.pop('a.c', 5)
-        assert {
+        expected = {
             'a': {'d': 6}
-        } == config_tree
+        }
+        assert expected == config_tree
 
     def test_merge_overriden(self):
         # Adress issue #110
@@ -2065,3 +2067,21 @@ def test_attr_syntax(self):
             }
             """)
         assert 5 == config.b.pb
+
+    def test_escape_quote(self):
+        config = ConfigFactory.parse_string(
+            """
+            quoted: "abc\\"test"
+            unquoted: abc\\"test
+            """)
+        assert 'abc"test' == config['quoted']
+        assert 'abc"test' == config['unquoted']
+
+    def test_escape_quote_complex(self):
+        config = ConfigFactory.parse_string(
+            """
+            value: "{\\"critical\\":\\"0.00\\",\\"warning\\":\\"99.99\\"}"
+            """
+        )
+
+        assert '{"critical":"0.00","warning":"99.99"}' == config['value']