Coverage for /Users/virantha/dev/ocr/pypdfocr/pypdfocr_util : 54%

# Copyright 2015 Virantha Ekanayake All Rights Reserved. 

# 

# 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. 

import logging 

import time 

""" 

    Various utility classes 

""" 

class Retry(object): 

    def __init__ (self, func, tries=3, pause=1): 

        self.func = func 

        self.tries = tries 

        self.pause = pause 

    def call_with_retry(self): 

        tries = self.tries 

        val = None 

        while tries > 0: 

            try: 

                val = self.func() 

                tries = 0 

            except Exception as e: 

                logging.exception("intermediate failure") 

                logging.info("Retrying (tries left %d)" % (tries-1)) 

                time.sleep(self.pause) 

                tries -= 1 

                if tries == 0: 

                    raise e 

        return val 

class ExecutableSearcher(object): 

    pass 

class WindowsExecutableSearcher(ExecutableSearcher): 

    def __init__(self, possible_dir_names, possible_exe_names): 

        """ 

        """ 

        if not exe_name.endswith('exe'): 

            self.exe_name = exe_name+'.exe' 

        else: 

            self.exe_name = exe_name 

    def find(self, root): 

        """  

            Search below root for the given executable 

        """ 

        found_exe = self.exe_name 

        if os.path.exists(root): 

            cwd = os.getcwd() 

            os.chdir(root) 

            for root, dirs, files in os.walk('.', topdown=True): 

                pass 

        return found_exe