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stbi/Lib/site-packages/Sqlparse/filters/tokens.py

+# -*- coding: utf-8 -*-
+#
+# Copyright (C) 2009-2018 the sqlparse authors and contributors
+# <see AUTHORS file>
+#
+# This module is part of python-sqlparse and is released under
+# the BSD License: https://opensource.org/licenses/BSD-3-Clause
+
+from sqlparse import tokens as T
+from sqlparse.compat import text_type
+
+
+class _CaseFilter(object):
+    ttype = None
+
+    def __init__(self, case=None):
+        case = case or 'upper'
+        self.convert = getattr(text_type, case)
+
+    def process(self, stream):
+        for ttype, value in stream:
+            if ttype in self.ttype:
+                value = self.convert(value)
+            yield ttype, value
+
+
+class KeywordCaseFilter(_CaseFilter):
+    ttype = T.Keyword
+
+
+class IdentifierCaseFilter(_CaseFilter):
+    ttype = T.Name, T.String.Symbol
+
+    def process(self, stream):
+        for ttype, value in stream:
+            if ttype in self.ttype and value.strip()[0] != '"':
+                value = self.convert(value)
+            yield ttype, value
+
+
+class TruncateStringFilter(object):
+    def __init__(self, width, char):
+        self.width = width
+        self.char = char
+
+    def process(self, stream):
+        for ttype, value in stream:
+            if ttype != T.Literal.String.Single:
+                yield ttype, value
+                continue
+
+            if value[:2] == "''":
+                inner = value[2:-2]
+                quote = "''"
+            else:
+                inner = value[1:-1]
+                quote = "'"
+
+            if len(inner) > self.width:
+                value = ''.join((quote, inner[:self.width], self.char, quote))
+            yield ttype, value