HGKeeper

#!/usr/bin/env python

# -*- coding: utf-8 -*-

# This file is part of Beremiz, a Integrated Development Environment for

# programming IEC 61131-3 automates supporting plcopen standard and CanFestival.

# See COPYING file for copyrights details.

# This program is free software; you can redistribute it and/or

# modify it under the terms of the GNU General Public License

# as published by the Free Software Foundation; either version 2

# of the License, or (at your option) any later version.

# This program is distributed in the hope that it will be useful,

# but WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

# GNU General Public License for more details.

# You should have received a copy of the GNU General Public License

# along with this program; if not, write to the Free Software

# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.

from __future__ import absolute_import

import os

import re

import operator

import hashlib

from util.ProcessLogger import ProcessLogger

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

class toolchain_gcc(object):

"""

This abstract class contains GCC specific code.

It cannot be used as this and should be inherited in a target specific

class such as target_linux or target_win32

"""

def __init__(self, CTRInstance):

self.CTRInstance = CTRInstance

self.buildpath = None

self.SetBuildPath(self.CTRInstance._getBuildPath())

def getBuilderCFLAGS(self):

"""

Returns list of builder specific CFLAGS

"""

return [self.CTRInstance.GetTarget().getcontent().getCFLAGS()]

def getBuilderLDFLAGS(self):

"""

Returns list of builder specific LDFLAGS

"""

return self.CTRInstance.LDFLAGS + \

[self.CTRInstance.GetTarget().getcontent().getLDFLAGS()]

def getCompiler(self):

"""

Returns compiler

"""

return self.CTRInstance.GetTarget().getcontent().getCompiler()

def getLinker(self):

"""

Returns linker

"""

return self.CTRInstance.GetTarget().getcontent().getLinker()

def GetBinaryCode(self):

try:

return open(self.exe_path, "rb").read()

except Exception:

return None

def _GetMD5FileName(self):

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

def ResetBinaryCodeMD5(self):

self.md5key = None

try:

os.remove(self._GetMD5FileName())

except Exception:

pass

def GetBinaryCodeMD5(self):

if self.md5key is not None:

return self.md5key

else:

try:

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

except Exception:

return None

def SetBuildPath(self, buildpath):

if self.buildpath != buildpath:

self.buildpath = buildpath

self.exe = self.CTRInstance.GetProjectName() + self.extension

self.exe_path = os.path.join(self.buildpath, self.exe)

self.md5key = None

self.srcmd5 = {}

def append_cfile_deps(self, src, deps):

for l in src.splitlines():

res = includes_re.match(l)

if res is not None:

depfn = res.groups()[0]

if os.path.exists(os.path.join(self.buildpath, depfn)):

deps.append(depfn)

def concat_deps(self, bn):

# read source

src = open(os.path.join(self.buildpath, bn), "r").read()

# update direct dependencies

deps = []

self.append_cfile_deps(src, deps)

# recurse through deps

# TODO detect cicular deps.

return reduce(operator.concat, map(self.concat_deps, deps), src)

def check_and_update_hash_and_deps(self, bn):

# Get latest computed hash and deps

oldhash, deps = self.srcmd5.get(bn, (None, []))

# read source

src = open(os.path.join(self.buildpath, bn)).read()

# compute new hash

newhash = hashlib.md5(src).hexdigest()

# compare

match = (oldhash == newhash)

if not match:

# file have changed

# update direct dependencies

deps = []

self.append_cfile_deps(src, deps)

# store that hashand deps

self.srcmd5[bn] = (newhash, deps)

# recurse through deps

# TODO detect cicular deps.

return reduce(operator.and_, map(self.check_and_update_hash_and_deps, deps), match)

def calc_source_md5(self):

wholesrcdata = ""

for _Location, CFilesAndCFLAGS, _DoCalls in self.CTRInstance.LocationCFilesAndCFLAGS:

# Get CFiles list to give it to makefile

for CFile, _CFLAGS in CFilesAndCFLAGS:

CFileName = os.path.basename(CFile)

wholesrcdata += self.concat_deps(CFileName)

return hashlib.md5(wholesrcdata).hexdigest()

def calc_md5(self):

return hashlib.md5(self.GetBinaryCode()).hexdigest()

def build(self):

# Retrieve compiler and linker

self.compiler = self.getCompiler()

self.linker = self.getLinker()

Builder_CFLAGS = ' '.join(self.getBuilderCFLAGS())

# ----------------- GENERATE OBJECT FILES ------------------------

obns = []

objs = []

relink = self.GetBinaryCode() is None

for Location, CFilesAndCFLAGS, _DoCalls in self.CTRInstance.LocationCFilesAndCFLAGS:

if CFilesAndCFLAGS:

if Location:

self.CTRInstance.logger.write(".".join(map(str, Location))+" :\n")

else:

self.CTRInstance.logger.write(_("PLC :\n"))

for CFile, CFLAGS in CFilesAndCFLAGS:

if CFile.endswith(".c"):

bn = os.path.basename(CFile)

obn = os.path.splitext(bn)[0]+".o"

objectfilename = os.path.splitext(CFile)[0]+".o"

match = self.check_and_update_hash_and_deps(bn)

if match:

self.CTRInstance.logger.write(" [pass] "+bn+" -> "+obn+"\n")

else:

relink = True

self.CTRInstance.logger.write(" [CC] "+bn+" -> "+obn+"\n")

status, _result, _err_result = ProcessLogger(

self.CTRInstance.logger,

"\"%s\" -c \"%s\" -o \"%s\" -O2 %s %s" %

(self.compiler, CFile, objectfilename, Builder_CFLAGS, CFLAGS)

).spin()

if status:

self.srcmd5.pop(bn)

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

return False

obns.append(obn)

objs.append(objectfilename)

elif CFile.endswith(".o"):

obns.append(os.path.basename(CFile))

objs.append(CFile)

# ---------------- GENERATE OUTPUT FILE --------------------------

# Link all the object files into one binary file

self.CTRInstance.logger.write(_("Linking :\n"))

if relink:

# Generate list .o files

listobjstring = '"' + '" "'.join(objs) + '"'

ALLldflags = ' '.join(self.getBuilderLDFLAGS())

self.CTRInstance.logger.write(" [CC] " + ' '.join(obns)+" -> " + self.exe + "\n")

status, _result, _err_result = ProcessLogger(

self.CTRInstance.logger,

"\"%s\" %s -o \"%s\" %s" %

(self.linker,

listobjstring,

self.exe_path,

ALLldflags)

).spin()

if status:

return False

else:

self.CTRInstance.logger.write(" [pass] " + ' '.join(obns)+" -> " + self.exe + "\n")

# Calculate md5 key and get data for the new created PLC

self.md5key = self.calc_md5()

# Store new PLC filename based on md5 key

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

f.write(self.md5key)

f.close()

return True

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