MPC: adding additional DEFINES

Written by marcelpetrick on May 25, 2018

Some weeks ago I noticed how the qDebug()-output could be enriched, so that in bigger solutions with a lot of different “unknown” components a reported error could be immediately pinned. And you save writing always __FILE__ and __LINE__. Referres to this post.
But the problem was that with the mpc-buildsystem it was unknown to me how to force it to put this DEFINE into the vcxproj-files.

It can be done via the “macros”-statement!

So I worked on my Python-skills and wrote a short script which iterates the given path recursively and fixes all mpc-files by checking for the position of the line with the last closingbrace “}” and then it adds before that position the line. Of course, the experts know several thousand ways to improve that script – but I am currently happy with it. It works, it is debug-able (.sh, I look at you!) and I will use the skeleton also for some other tasks.
It can be found (like most Python-snippets) at: https://github.com/marcelpetrick/pythonCollection

import fileinput
import sys
import os

#------------------------------------------
def addMacroToFile(filename, newStatement):
    #print("called addMacroToFile:", filename, determinePositionOfLastBrace(filename))

    returnValue = "fail"
    posLastBrace = determinePositionOfLastBrace(filename)
    posCurrentLine = 1
    for line in fileinput.input(filename, inplace=True):
        # add additional line in case of matching last brace
        if posCurrentLine == posLastBrace:
            sys.stdout.write(newStatement)
            sys.stdout.write("\n") # newline, else it would be put just before the brace
            returnValue = "success"

        sys.stdout.write(line) # prints without additional newline (on windows)
        posCurrentLine += 1

    return returnValue

#------------------------------------------
# return the position of the last brace.
# possible improvement: in case of some malformed mpc: skip ..
def determinePositionOfLastBrace(filename):
    lastPos = -1
    position = 1
    with open(filename, "r") as file: #has implicit close - which is nice
        for line in file:
            if line.__contains__("}"):
                lastPos = position
            position += 1

    return lastPos

# ------------------------------------------
# find all mpb/mpc files
def fixAllFilesRecursively(path, suffix, newStatement):
    for dirname, dirnames, filenames in os.walk(path):
        for filename in filenames:
            full_path = os.path.join(dirname, filename)
            if full_path.endswith(suffix):
                print(full_path)
                wasSuccessful = addMacroToFile(full_path, newStatement)
                if wasSuccessful == "success":
                    print("  modified :)")

        # prevent recursion into those subdirs with meta-data
        if '.svn' in dirnames:
            dirnames.remove('.svn')
        if '.git' in dirnames:
            dirnames.remove('.git')

#------------------------------------------
#------------------------------------------

path = "D:\Repo_INS_RADARNX"
suffix = "mpc"
newStatement = "	macros += QT_MESSAGELOGCONTEXT"
# TODO possible improvement: prevent double application of the added macro ..
fixAllFilesRecursively(path, suffix, newStatement)

import fileinput

import sys

import os

#------------------------------------------

def addMacroToFile(filename, newStatement):

#print("called addMacroToFile:", filename, determinePositionOfLastBrace(filename))

returnValue = "fail"

posLastBrace = determinePositionOfLastBrace(filename)

posCurrentLine = 1

for line in fileinput.input(filename, inplace=True):

# add additional line in case of matching last brace

if posCurrentLine == posLastBrace:

sys.stdout.write(newStatement)

sys.stdout.write("\n") # newline, else it would be put just before the brace

returnValue = "success"

sys.stdout.write(line) # prints without additional newline (on windows)

posCurrentLine += 1

return returnValue

#------------------------------------------

# return the position of the last brace.

# possible improvement: in case of some malformed mpc: skip ..

def determinePositionOfLastBrace(filename):

lastPos = -1

position = 1

with open(filename, "r") as file: #has implicit close - which is nice

for line in file:

if line.__contains__("}"):

lastPos = position

position += 1

return lastPos

# ------------------------------------------

# find all mpb/mpc files

def fixAllFilesRecursively(path, suffix, newStatement):

for dirname, dirnames, filenames in os.walk(path):

for filename in filenames:

full_path = os.path.join(dirname, filename)

if full_path.endswith(suffix):

print(full_path)

wasSuccessful = addMacroToFile(full_path, newStatement)

if wasSuccessful == "success":

print(" modified :)")

# prevent recursion into those subdirs with meta-data

if '.svn' in dirnames:

dirnames.remove('.svn')

if '.git' in dirnames:

dirnames.remove('.git')

#------------------------------------------

path = "D:\Repo_INS_RADARNX"

suffix = "mpc"

newStatement = " macros += QT_MESSAGELOGCONTEXT"

# TODO possible improvement: prevent double application of the added macro ..

fixAllFilesRecursively(path, suffix, newStatement)

solutions; not code

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