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import os, re

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from wxPopen import ProcessLogger

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import hashlib

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import time

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includes_re =  re.compile('\s*#include\s*["<]([^">]*)[">].*')

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class toolchain_makefile():

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    def __init__(self, PluginsRootInstance):

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        self.PluginsRootInstance = PluginsRootInstance

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        self.md5key = None 

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        self.buildpath = None

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        self.SetBuildPath(self.PluginsRootInstance._getBuildPath())

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    def SetBuildPath(self, buildpath):

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        self.buildpath = buildpath

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    def GetBinaryCode(self):

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    def _GetMD5FileName(self):

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        return os.path.join(self.buildpath, "lastbuildPLC.md5")

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    def GetBinaryCodeMD5(self):

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        if self.md5key is not None:

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            return self.md5key

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        else:

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            try:

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                return open(self._GetMD5FileName(), "r").read()

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            except Exception, e:

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                return None

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    def build(self):

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        srcfiles= []

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        cflags = []

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        for Location, CFilesAndCFLAGS, DoCalls in self.PluginsRootInstance.LocationCFilesAndCFLAGS:

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            wholesrcdata = "" 

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            # Get CFiles list to give it to makefile

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            for CFile, CFLAGS in CFilesAndCFLAGS:

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                CFileName = os.path.basename(CFile)

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                wholesrcdata += open(CFile, "r").read()

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                srcfiles.append(CFileName)

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                if CFLAGS not in cflags:

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                    cflags.append(CFLAGS)

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            self.md5key = hashlib.md5(wholesrcdata).hexdigest()

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            props = self.PluginsRootInstance.GetProjectProperties()

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            self.md5key += '#'.join([props[key] for key in ['companyName',

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                                                            'projectName',

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                                                            'productName']])

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            self.md5key += '#'+','.join(map(str,time.localtime()))

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            # Store new PLC filename based on md5 key

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            f = open(self._GetMD5FileName(), "w")

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            f.write(self.md5key)

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            f.close()

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        beremizcommand = {"src": ' '.join(srcfiles),

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                          "cflags": ' '.join(cflags),

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                          "md5": self.md5key

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                         }

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        target = self.PluginsRootInstance.GetTarget().getcontent()["value"]

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        command = target.getCommand().split(' ') +\

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                  [target.getBuildPath()] +\

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                  [arg % beremizcommand for arg in target.getArguments().split(' ')] +\

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                  target.getRule().split(' ')

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        # Call Makefile to build PLC code and link it with target specific code

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        status, result, err_result = ProcessLogger(self.PluginsRootInstance.logger,

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                                                   command).spin()

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        if status :

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            self.PluginsRootInstance.logger.write_error(_("C compilation of %s failed.\n"))

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            return False

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        return True