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portqt4to5.py
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portqt4to5.py
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#!/usr/bin/env python
import os, sys
import subprocess
qt4to5Binary = "~/dev/build/qtbase/llvm/bin/qt4to5"
cmakeBinary = "cmake"
if os.popen("git diff").read():
print "Error: must start with a clean working dir"
sys.exit(1)
# Utility functions
def execCommand(command):
print "RUNNING", command
subprocess.Popen(command, shell=True).wait()
def createCommit(message):
if not os.popen("git diff").read():
return
execCommand("git commit -am \"" + message + "\"")
execCommand("git show --stat")
def setupEnv():
os.mkdir("porting")
os.chdir("porting")
execCommand(cmakeBinary + ' .. -DCMAKE_EXPORT_COMPILE_COMMANDS=TRUE')
# Consider running make here to ensure that required generated files get generated (moc and ui files)
os.chdir("..")
if not os.path.exists("porting/compile_commands.json"):
setupEnv()
# Porting functions
def renameMethod(className, oldName, newName):
renameClass = ""
if className:
renameClass = " -rename-class=::" + className
execCommand("git grep -lw " + oldName + " | xargs " + qt4to5Binary + renameClass + " -rename-old=" + oldName + " -rename-new=" + newName + " " + os.getcwd() + " " + os.getcwd() + "/porting")
createCommit("Port uses of " + className + "::" + oldName + " to " + newName)
def portQtEscape():
execCommand("git grep -lw Qt::escape | xargs " + qt4to5Binary + " -port-qt-escape -create-ifdefs " + " " + os.getcwd() + " " + os.getcwd() + "/porting")
createCommit("Port from Qt::escape to QString::toHtmlEscaped")
def portQMetaMethodSignature():
execCommand("git grep -l \"\\.signature()\" | xargs " + qt4to5Binary + " -port-qmetamethod-signature -create-ifdefs " + os.getcwd() + " " + os.getcwd() + "/porting")
createCommit("Port from QMetaMethod::signature to methodSignature")
def replaceQVariantTemplateFunctions():
execCommand("git grep -l qVariantCanConvert | xargs sed -i 's|qVariantCanConvert<\\(\\s*[^>\\]\\+\\)>\\s*(\\s*\\([^)]\\+\\))|\\2.canConvert<\\1>()|'")
execCommand("git grep -l canConvert | xargs sed -i 's| \\.canConvert|.canConvert|'")
execCommand("git grep -l qVariantValue | xargs sed -i 's|qVariantValue<\\(\\s*[^>\\]\\+\\)>\\s*(\\s*\\([^)]\\+\\))|\\2.value<\\1>()|'")
execCommand("git grep -l \" .value\" | xargs sed -i 's| \\.value|.value|'")
createCommit("Port from QVariant free-functions to template methods")
def replaceQObjectTemplateFunctions():
execCommand("git grep -l qFindChild | xargs sed -i 's|qFindChild<\\(\\s*[^>\\]\\+\\)>\\s*(\\s*\\([^)]\\+\\))|\\2->findChild<\\1>()|'")
execCommand("git grep -l findChild | xargs sed -i 's| ->findChild|->findChild|'")
execCommand("git grep -l qFindChildren | xargs sed -i 's|qFindChildren<\\(\\s*[^>\\]\\+\\)>\\s*(\\s*\\([^)]\\+\\))|\\2->findChildren<\\1>()|'")
execCommand("git grep -l findChildren | xargs sed -i 's| ->findChildren|->findChildren|'")
createCommit("Port from QObject free-functions to template methods")
def portAtomics():
execCommand("git grep -lw QAtomicInt | xargs " + qt4to5Binary + " -port-atomics -create-ifdefs " + os.getcwd() + " " + os.getcwd() + "/porting")
createCommit("Port implicit casts of QAtomicInt and QAtomicPointer")
def portViews():
execCommand("git grep -lw dataChanged | xargs " + qt4to5Binary + " -port-qabstractitemview-datachanged -create-ifdefs " + os.getcwd() + " " + os.getcwd() + "/porting")
createCommit("Port QAbstractItemView::dataChanged")
def portEnum(scope, printedScope, oldName, newName):
execCommand("git grep -lw " + oldName + " | xargs " + qt4to5Binary + " -rename-enum=" + scope + " --create-ifdefs -rename-old=" + oldName + " -rename-new=" + printedScope + "::" + newName + " " + os.getcwd() + " " + os.getcwd() + "/porting")
createCommit("Port uses of " + printedScope + "::" + oldName + " to " + newName)
def portQImageText():
execCommand("git grep -l \"text(.\\+0\\s*)\" | xargs " + qt4to5Binary + " -port-qimage-text " + os.getcwd() + " " + os.getcwd() + "/porting")
execCommand("git grep -l \"setText(.\\+0.\\+)\" | xargs " + qt4to5Binary + " -port-qimage-text " + os.getcwd() + " " + os.getcwd() + "/porting")
createCommit("Port uses of QImage::text and QImage::setText.")
## Pre-porting steps. These can be done before porting to Qt 5 (eg port away from deprecated methods).
def portFromQt3Support():
renameMethod("QTransform", "det", "determinant")
renameMethod("QWidget", "setShown", "setVisible")
renameMethod("QWidget", "setIcon", "setWindowIcon")
def portFromQt4Deprecated():
portQImageText()
portViews()
renameMethod("QPaintDevice", "numColors", "colorCount")
renameMethod("QImage", "numColors", "colorCount")
renameMethod("QImage", "setNumColors", "setColorCount")
renameMethod("", "qMemCopy", "memcpy")
renameMethod("QImage", "numBytes", "byteCount")
renameMethod("QDate", "setYMD", "setDate")
renameMethod("QRegion", "unite", "united")
renameMethod("QRect", "unite", "united")
renameMethod("QRegion", "intersect", "intersected")
renameMethod("QRect", "intersect", "intersected")
renameMethod("QFont", "removeSubstitution", "removeSubstitutions")
renameMethod("QHeaderView", "setClickable", "setSectionsClickable")
replaceQVariantTemplateFunctions()
replaceQObjectTemplateFunctions()
## Porting steps
def port4to5():
portQMetaMethodSignature()
#portAtomics()
##Post porting. Porting away from deprecated API
def portFromQt5Deprecated():
portQtEscape()
portEnum("QSsl::SslProtocol", "QSsl", "TlsV1", "TlsV1_0")
renameMethod("QHeaderView", "setResizeMode", "setSectionResizeMode")
renameMethod("QHeaderView", "setMovable", "setSectionsMovable")
renameMethod("QSslCertificate", "alternateSubjectNames", "subjectAlternativeNames")
# These function invokations do the actual porting.
portFromQt3Support()
portFromQt4Deprecated()
port4to5()
portFromQt5Deprecated()