improve C# and php dependency detection

packages/wakatime/dependencies/dotnet.py

@@ -10,9 +10,16 @@
 """
 
 from . import TokenParser
+from ..compat import u
 
 
 class CSharpParser(TokenParser):
+    exclude = [
+        r'^system$',
+        r'^microsoft$',
+    ]
+    state = None
+    buffer = u('')
 
     def parse(self):
         for index, token, content in self.tokens:
@@ -20,14 +27,38 @@ class CSharpParser(TokenParser):
         return self.dependencies
 
     def _process_token(self, token, content):
-        if self.partial(token) == 'Namespace':
+        if self.partial(token) == 'Keyword':
+            self._process_keyword(token, content)
+        if self.partial(token) == 'Namespace' or self.partial(token) == 'Name':
             self._process_namespace(token, content)
+        elif self.partial(token) == 'Punctuation':
+            self._process_punctuation(token, content)
         else:
             self._process_other(token, content)
 
+    def _process_keyword(self, token, content):
+        if content == 'using':
+            self.state = 'import'
+            self.buffer = u('')
+
     def _process_namespace(self, token, content):
-        if content != 'import' and content != 'package' and content != 'namespace':
-            self.append(content, truncate=True)
+        if self.state == 'import':
+            if u(content) != u('import') and u(content) != u('package') and u(content) != u('namespace') and u(content) != u('static'):
+                if u(content) == u(';'):  # pragma: nocover
+                    self._process_punctuation(token, content)
+                else:
+                    self.buffer += u(content)
+
+    def _process_punctuation(self, token, content):
+        if self.state == 'import':
+            if u(content) == u(';'):
+                self.append(self.buffer, truncate=True)
+                self.buffer = u('')
+                self.state = None
+            elif u(content) == u('='):
+                self.buffer = u('')
+            else:
+                self.buffer += u(content)
 
     def _process_other(self, token, content):
         pass

packages/wakatime/dependencies/php.py

@@ -61,10 +61,10 @@ class PhpParser(TokenParser):
 
     def _process_literal_string(self, token, content):
         if self.state == 'include':
-            if content != '"':
+            if content != '"' and content != "'":
                 content = content.strip()
                 if u(token) == 'Token.Literal.String.Double':
-                    content = u('"{0}"').format(content)
+                    content = u("'{0}'").format(content)
                 self.append(content)
                 self.state = None