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‎README‎

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Script helps to convert C/C++ sources to C/C++ -like Python sources.
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It does few edit operations, for convert C/C++ to Python.
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After it you must edit code manually, but, probably you will spend less time for it.
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Utility Will make mistaces and Will not generate ready for use code, so, it won't help you,
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if you don't know either C/C++ and Python
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For better result, it is recomented to format your code to ANSI style before do conversion.
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NOTE: NO ANY BACKUPS CREATED. YOU MAY PERMANENTLY CORRUPT YOR SOURCES!!!
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Usage:
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cpptopython.py DIR|FILE
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cpptopython.py -v|--version|-h|--help
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When directory given - tries to find source files by C/C++ suffixes, when file name given - processes given file
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Author: Andrei Kopats <[email protected]>
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License: GPL

‎cpp2python.py‎

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#!/usr/bin/env python
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help = """Script helps to convert C/C++ sources to C/C++ -like Python sources.
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It does few edit operations, for convert C/C++ to Python.
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After it you must edit code manually, but, probably you would spend less time for it.
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Utility Will make mistaces and Will not generate ready for use code, so, it won't help you,
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if you don't know C/C++ and Python
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For better result, it is recomented to format your code to ANSI style before do conversion.
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NOTE: NO ANY BACKUPS CREATED. YOU MAY PERMANENTLY CORRUPT YOR SOURCES!!!
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Usage:
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cpptopython.py DIR|FILE
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cpptopython.py -v|--version|-h|--help
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When directory given - tries to find source files by C/C++ suffixes, when file name given - processes given file
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Author: Andrei Kopats <[email protected]>
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License: GPL
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"""
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import sys
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import os.path
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import re
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def is_source(filename):
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suffixes = ('.cpp', '.c', '.cxx', '.c++', '.cc', '.h', '.hpp', '.hxx', '.h++')
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for s in suffixes:
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if filename.endswith(s):
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return True
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return False
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def process_line(line):
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""" remove semicolons
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codecode(param, param);
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V
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codecode(param, param)
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"""
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line = re.sub(';$', '', line) # remove semicolon from the end of line
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""" remove strings containing opening bracket
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if (blabla)
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{
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codecode
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V
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if (blabla)
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codecode
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"""
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line = re.sub('\s*{\n$', '', line)
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""" remove closing brackets. Empty line preserved
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if (blabla)
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{
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codecode
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V
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if (blabla)
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codecode
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"""
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line = re.sub('\s*}$', '', line)
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""" replace inline comment sign
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// here is comment
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V
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# here is comment
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"""
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line = re.sub('//', '#', line)
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""" replace /* comment sign
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/* here is comment
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V
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''' here is comment
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"""
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line = re.sub('/\*', "'''", line)
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""" replace */ comment sign
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here is comment */
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V
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here is comment '''
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"""
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line = re.sub('\*/', "'''", line)
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""" replace '||' with 'or'
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boolvar || anotherboolvar
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V
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boolvar or anotherboolvar
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"""
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line = re.sub('\|\|', 'or', line)
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""" replace '&&' with 'and'
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boolvar && anotherboolvar
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V
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boolvar and anotherboolvar
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"""
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line = re.sub('&&', 'and', line)
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""" replace '!' with 'not '
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if !boolvar
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V
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if not boolvar
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"""
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line = re.sub('!([^=\n])', 'not \\1', line)
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""" replace '->' with '.'
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object->method()
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V
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object.method()
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"""
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line = re.sub('->', '.', line)
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""" replace 'false' with 'False'
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b = false
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V
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b = False
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"""
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line = re.sub('false', 'False', line)
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""" replace 'true' with 'True'
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b = true
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V
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b = True
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"""
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line = re.sub('true', 'True', line)
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""" remove "const" word from the middle of string
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const int result = a.exec();
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V
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int result = a.exec();
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"""
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line = re.sub('const ', ' ', line)
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""" remove "const" word from the end of string
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const int result = a.exec();
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V
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int result = a.exec();
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"""
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line = re.sub(' const$', '', line)
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""" remove brackets around if statement and add colon
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if (i = 4)
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V
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if i = 4:
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"""
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line = re.sub('if\s*\((.*)\)$', 'if \\1:', line)
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""" remove brackets around if statement and add colon
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if (i = 4)
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V
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if i = 4:
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"""
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line = re.sub('if\s*\((.*)\)$', 'if \\1:', line)
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#return line
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""" remove type from method definition and add a colon and "def"
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-bool pMonkeyStudio::isSameFile( const QString& left, const QString& right )
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+pMonkeyStudio::isSameFile( const QString& left, const QString& right ):
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"""
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line = re.sub('^[\w:&<>\*]+\s+([\w:]+)\(([^\)]*\))$', 'def \\1(self, \\2:', line)
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""" after previous replacement fix "(self, )" to "(self)"
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-def internal_projectCustomActionTriggered(self, ):
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+def internal_projectCustomActionTriggered(self):
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"""
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line = re.sub('\(\s*self,\s*\)', '(self)', line)
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""" remove type name from function parameters (second and farther)
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-def internal_currentProjectChanged(self, XUPProjectItem* currentProject, XUPProjectItem* previousProject ):
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+def internal_currentProjectChanged(self, currentProject, previousProject ):
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"""
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line = re.sub(',\s*[\w\d:&\*<>]+\s+([\w\d:&\*]+)', ', \\1', line)
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""" remove type name from variable declaration and initialisation
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-pAbstractChild* document = currentDocument()
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+document = currentDocument()
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"""
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line = re.sub('[\w\d:&\*]+\s+([\w\d]+)\s*= ', '\\1 = ', line)
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""" remove class name from method definition
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-pMonkeyStudio::isSameFile( const QString& left, const QString& right ):
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+pMonkeyStudio::isSameFile( const QString& left, const QString& right ):
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"""
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line = re.sub('^def [\w\d]+::([\w\d]+\([^\)]*\):)$', 'def \\1', line)
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""" replace '::' with '.'
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YourNameSpace::YourFunction(bla, bla)
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V
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YourNameSpace.YourFunction(bla, bla)
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"""
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line = re.sub('::', '.', line)
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""" replace 'else if' with 'elif'
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else if (blabla)
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V
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elif (blabla)
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"""
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line = re.sub('else\s+if', 'elif', line)
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""" replace 'else' with 'else:'
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if blabala:
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pass
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else
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pass
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V
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if blabala:
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pass
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else:
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pass
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"""
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line = re.sub('else\s*$', 'else:\n', line)
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""" Remove "new" keyword
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-i = new Class
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+i = Class
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"""
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line = re.sub(' new ', ' ', line)
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""" Replace "this" with "self"
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-p = SomeClass(this)
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+p = SomeClass(self)
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"""
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line = re.sub('([^\w])this([^\w])', '\\1self\\2', line)
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""" Replace Qt foreach macro with Python for
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-foreach ( QMdiSubWindow* window, a.subWindowList() )
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+foreach ( QMdiSubWindow* window, a.subWindowList() )
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"""
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line = re.sub('foreach\s*\(\s*[\w\d:&\*]+\s+([\w\d]+)\s*,\s*([\w\d\.\(\)]+)\s*\)', 'for \\1 in \\2:', line)
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""" Replace Qt signal emit statement
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-emit signalName(param, param)
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+signalName.emit(param, param)
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"""
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line = re.sub('emit ([\w\d]+)', '\\1.emit', line)
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""" Replace Qt connect call
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-connect( combo, SIGNAL( activated( int ) ), self, SLOT( comboBox_activated( int ) ) )
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+combo.activated.connect(self.comboBox_activated)
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"""
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line = re.sub('connect\s*\(\s*([^,]+)\s*,\s*' + \
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'SIGNAL\s*\(\s*([\w\d]+)[^\)]+\)\s*\)\s*,'+ \
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'\s*([^,]+)\s*,\s*' + \
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'S[A-Z]+\s*\(\s*([\w\d]+)[^\)]+\)\s*\)\s*\)',
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'\\1.\\2.connect(\\3.\\4)', line)
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return line
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def process_file(filename):
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with open(filename, 'rw+') as file:
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lines = file.readlines() # probably would die on sources more than 100 000 lines :D
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file.seek(0)
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file.truncate(0)
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for line in lines:
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file.write(process_line(line))
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if __name__ == '__main__':
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if '--help' in sys.argv or \
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'-h' in sys.argv or \
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'--version' in sys.argv or \
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'-v' in sys.argv:
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print help
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sys.exit(0)
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if len (sys.argv) != 2:
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print >> sys.stderr, 'Invalid parameters count. Must be 1'
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print help
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sys.exit(-1)
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if os.path.isdir(sys.argv[1]):
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for root, dirs, files in os.walk(sys.argv[1]):
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for file in files:
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filename = root + '/' + file
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if is_source(filename):
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process_file(filename)
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elif os.path.isfile(sys.argv[1]):
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process_file(sys.argv[1])
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else:
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print >> sys.stderr, 'Not a file or directory', sys.argv[1]
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sys.exit(-1)

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