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#!/bin/env python
##
## Copyright (c) 2010-2017 Intel Corporation
##
## 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 decimal import *
class CsvReaderError:
def __init__(self, msg):
self._msg = msg;
def __str__(self):
return self._msg;
class CsvReader:
def __init__(self, fieldTypes = None):
self._file_name = None;
self._fieldTypes = fieldTypes;
def open(self, file_name):
self._file = open(file_name, 'r');
self._file_name = file_name;
def read(self):
line = "#"
while (len(line) != 0 and line[0] == "#"):
line = self._file.readline();
if (len(line) != 0):
return self._lineToEntry(line)
else:
return None;
def _lineToEntry(self, line):
split = line.strip().split(',');
if (self._fieldTypes is None):
return split;
have = len(split)
expected = len(self._fieldTypes)
if (have != expected):
raise CsvReaderError("Invalid number of fields %d != %d" % (have, expected))
entry = {};
for i in range(len(self._fieldTypes)):
curFieldType = self._fieldTypes[i][1]
curFieldName = self._fieldTypes[i][0];
if (curFieldType == "int"):
entry[curFieldName] = int(split[i])
elif (curFieldType == "Decimal"):
entry[curFieldName] = Decimal(split[i])
else:
raise CsvReaderError("Invalid field type %s" % curFieldType);
return entry;
def readAll(self):
ret = []
line = self.read();
while (line != None):
ret.append(line);
line = self.read();
return ret;
def close(self):
self._file.close();
self._file = None;
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