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      1 # -*- coding: utf-8 -*-
      2 
      3 #-------------------------------------------------------------------------
      4 # drawElements Quality Program utilities
      5 # --------------------------------------
      6 #
      7 # Copyright 2015 The Android Open Source Project
      8 #
      9 # Licensed under the Apache License, Version 2.0 (the "License");
     10 # you may not use this file except in compliance with the License.
     11 # You may obtain a copy of the License at
     12 #
     13 #      http://www.apache.org/licenses/LICENSE-2.0
     14 #
     15 # Unless required by applicable law or agreed to in writing, software
     16 # distributed under the License is distributed on an "AS IS" BASIS,
     17 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     18 # See the License for the specific language governing permissions and
     19 # limitations under the License.
     20 #
     21 #-------------------------------------------------------------------------
     22 
     23 import os
     24 import sys
     25 import shlex
     26 import platform
     27 import subprocess
     28 
     29 DEQP_DIR = os.path.realpath(os.path.normpath(os.path.join(os.path.dirname(__file__), "..", "..")))
     30 
     31 # HostInfo describes properties of the host where these scripts
     32 # are running on.
     33 class HostInfo:
     34 	OS_WINDOWS	= 0
     35 	OS_LINUX	= 1
     36 	OS_OSX		= 2
     37 
     38 	@staticmethod
     39 	def getOs ():
     40 		if sys.platform == 'darwin':
     41 			return HostInfo.OS_OSX
     42 		elif sys.platform == 'win32':
     43 			return HostInfo.OS_WINDOWS
     44 		elif sys.platform.startswith('linux'):
     45 			return HostInfo.OS_LINUX
     46 		else:
     47 			raise Exception("Unknown sys.platform '%s'" % sys.platform)
     48 
     49 	@staticmethod
     50 	def getArchBits ():
     51 		MACHINE_BITS = {
     52 			"i386":		32,
     53 			"i686":		32,
     54 			"x86":		32,
     55 			"x86_64":	64,
     56 			"AMD64":	64
     57 		}
     58 		machine = platform.machine()
     59 
     60 		if not machine in MACHINE_BITS:
     61 			raise Exception("Unknown platform.machine() '%s'" % machine)
     62 
     63 		return MACHINE_BITS[machine]
     64 
     65 def die (msg):
     66 	print(msg)
     67 	exit(-1)
     68 
     69 def shellquote(s):
     70 	return '"%s"' % s.replace('\\', '\\\\').replace('"', '\"').replace('$', '\$').replace('`', '\`')
     71 
     72 g_workDirStack = []
     73 
     74 def pushWorkingDir (path):
     75 	oldDir = os.getcwd()
     76 	os.chdir(path)
     77 	g_workDirStack.append(oldDir)
     78 
     79 def popWorkingDir ():
     80 	assert len(g_workDirStack) > 0
     81 	newDir = g_workDirStack[-1]
     82 	g_workDirStack.pop()
     83 	os.chdir(newDir)
     84 
     85 def execute (args):
     86 	retcode	= subprocess.call(args)
     87 	if retcode != 0:
     88 		raise Exception("Failed to execute '%s', got %d" % (str(args), retcode))
     89 
     90 def readFile (filename):
     91 	f = open(filename, 'rb')
     92 	data = f.read()
     93 	f.close()
     94 	return data
     95 
     96 def writeFile (filename, data):
     97 	f = open(filename, 'wb')
     98 	f.write(data)
     99 	f.close()
    100 
    101 def which (binName, paths = None):
    102 	if paths == None:
    103 		paths = os.environ['PATH'].split(os.pathsep)
    104 
    105 	def whichImpl (binWithExt):
    106 		for path in paths:
    107 			path = path.strip('"')
    108 			fullPath = os.path.join(path, binWithExt)
    109 			if os.path.isfile(fullPath) and os.access(fullPath, os.X_OK):
    110 				return fullPath
    111 
    112 		return None
    113 
    114 	extensions = [""]
    115 	if HostInfo.getOs() == HostInfo.OS_WINDOWS:
    116 		extensions += [".exe", ".bat"]
    117 
    118 	for extension in extensions:
    119 		extResult = whichImpl(binName + extension)
    120 		if extResult != None:
    121 			return extResult
    122 
    123 	return None
    124