Base classes for matcher and library

2014-03-15 11:51:45 +01:00
parent 988d0d6e35
commit 8b2eb50f29
20 changed files with 2228 additions and 0 deletions
@@ -0,0 +1,96 @@
+# Copyright 2013 Dean Gardiner <gardiner91@gmail.com>
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from caper.objects import CaptureMatch
+from logr import Logr
+
+
+class CaptureStep(object):
+    REPR_KEYS = ['regex', 'func', 'single']
+
+    def __init__(self, capture_group, tag, source, regex=None, func=None, single=None, **kwargs):
+        #: @type: CaptureGroup
+        self.capture_group = capture_group
+
+        #: @type: str
+        self.tag = tag
+        #: @type: str
+        self.source = source
+        #: @type: str
+        self.regex = regex
+        #: @type: function
+        self.func = func
+        #: @type: bool
+        self.single = single
+
+        self.kwargs = kwargs
+
+        self.matched = False
+
+    def execute(self, fragment):
+        """Execute step on fragment
+
+        :type fragment: CaperFragment
+        :rtype : CaptureMatch
+        """
+
+        match = CaptureMatch(self.tag, self)
+
+        if self.regex:
+            weight, result, num_fragments = self.capture_group.parser.matcher.fragment_match(fragment, self.regex)
+            Logr.debug('(execute) [regex] tag: "%s"', self.tag)
+
+            if not result:
+                return match
+
+            # Populate CaptureMatch
+            match.success = True
+            match.weight = weight
+            match.result = result
+            match.num_fragments = num_fragments
+        elif self.func:
+            result = self.func(fragment)
+            Logr.debug('(execute) [func] %s += "%s"', self.tag, match)
+
+            if not result:
+                return match
+
+            # Populate CaptureMatch
+            match.success = True
+            match.weight = 1.0
+            match.result = result
+        else:
+            Logr.debug('(execute) [raw] %s += "%s"', self.tag, fragment.value)
+
+            include_separators = self.kwargs.get('include_separators', False)
+
+            # Populate CaptureMatch
+            match.success = True
+            match.weight = 1.0
+
+            if include_separators:
+                match.result = (fragment.left_sep, fragment.value, fragment.right_sep)
+            else:
+                match.result = fragment.value
+
+        return match
+
+    def __repr__(self):
+        attribute_values = [key + '=' + repr(getattr(self, key))
+                            for key in self.REPR_KEYS
+                            if hasattr(self, key) and getattr(self, key)]
+
+        attribute_string = ', ' + ', '.join(attribute_values) if len(attribute_values) > 0 else ''
+
+        return "CaptureStep('%s'%s)" % (self.tag, attribute_string)