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#! /usr/bin/env python
# Copyright (c) 2017 Cisco and/or its affiliates.
# 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 sys
import os
import csv
import subprocess
def readFileLines(fileName):
'''
Get the entire file into memory as a list of lines.
'''
result = None
with open(fileName, "r") as file:
result = file.readlines()
return result
def readFileString(fileName):
'''
Get the entire file into memory as a python string.
'''
result = None
if fileName != None and len(fileName) > 0:
with open (fileName, "r") as file:
result = file.read()
return result
def sourceFileNameToName(sourceFileName):
'''
Given the path to a source file, return the name without any path components or trailing suffix.
'''
name = os.path.basename(sourceFileName)
return name.split(".")[0]
def canonicalizeFunctionName(functionName):
'''
Given a function name that contains the initial '_' character,
strip it and return a canonicalised form of the same name suitable for a source file.
'''
if functionName[0] == "_":
functionName = functionName[1:]
return functionName
def isReservedName(functionName):
'''
Given a canonicalized name, determine if it is a reserved name according to ISO/IEC 9899:2011 and ANSI Sec. 4.1.2.1,
identifiers that begin with an underscore and either an uppercase letter or another underscore are always reserved for any use.
'''
if functionName[0] == '_' and functionName[1] == '_':
return True
elif functionName[0] == '_' and functionName[1].isupper():
return True
return False
def getDarwinTestableFunctions(objectFileName):
'''
Retrieve a set of local and global function names within a file.
'''
command = [ "/usr/bin/nm", "-gUm", objectFileName ]
output = subprocess.check_output(command)
lines = output.splitlines()
external = []
internal = []
for line in lines:
if line:
fields = line.split(" ")
if (len(fields) > 1) and (fields[1] == "(__TEXT,__text)"):
functionName = canonicalizeFunctionName(fields[3])
if not isReservedName(functionName):
if fields[2] == "external":
external.append( ( functionName ) )
else:
internal.append( ( functionName ) )
pass
pass
pass
pass
external.sort()
internal.sort()
return { "Local": internal, "Global" : external }
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