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import re
preprocessorRe = re.compile( r'\s*#.*' )
fdefineRe = re.compile( r'\s*#\s*define\s*(\S*)\s*\(' ) # #defines that take arguments
defineRe = re.compile( r'\s*#\s*define\s*(\S*)(\s+)(.*)' ) # all #defines
undefRe = re.compile( r'\s*#\s*undef\s*(\S*)' ) # all #undefs
ifdefCommonRe = re.compile( r'\s*#\s*if' ) # all #ifdefs
ifdefRe = re.compile( r'\s*#\s*ifdef\s*(\S*)' )
ifndefRe = re.compile( r'\s*#\s*ifndef\s*(\S*)' )
endifRe = re.compile( r'\s*#\s*endif\s*//\s*(.*)' )
elseRe = re.compile( r'\s*#\s*else' )
ifRe = re.compile( r'\s*#\s*if\s+(.*)' )
nsRe = re.compile( r'(.*?\s*\s*namespace\s+)(\w+)(\s*{?)(.*)' )
nsCloseRe = re.compile( r'(.*\s*})(\s*\/\/\s*namespace\s+)(\w+)(\s*)(.*)' )
class LineMapper:
def __init__( self, idMap, outerNamespace ):
self.idMap = idMap
self.outerNamespace = outerNamespace
def replaceId( self, lineNo, id ):
if not self.idMap.has_key( id ):
raise ValueError( "Unrecognised macro identifier: '{0}' on line: {1}".format( id, lineNo ) )
subst = self.idMap[id]
if subst == "":
return id
else:
return subst
# TBD:
# #if, #ifdef, comments after #else
def mapLine( self, lineNo, line ):
m = ifndefRe.match( line )
if m:
return "#ifndef " + self.replaceId( lineNo, m.group(1)) + "\n"
m = defineRe.match( line )
if m:
return "#define {0}{1}{2}\n".format( self.replaceId( lineNo, m.group(1)), m.group(2), m.group(3) )
m = endifRe.match( line )
if m:
return "#endif // " + self.replaceId( lineNo, m.group(1)) + "\n"
m = nsCloseRe.match( line )
if m:
originalNs = m.group(3)
# print("[{0}] originalNs: '{1}' - closing".format(lineNo, originalNs))
# print( " " + line )
# print( " 1:[{0}]\n 2:[{1}]\n 3:[{2}]\n 4:[{3}]\n 5:[{4}]".format( m.group(1), m.group(2), m.group(3), m.group(4), m.group(5) ) )
if self.outerNamespace.has_key(originalNs):
outerNs, innerNs = self.outerNamespace[originalNs]
return "{0}}}{1}{2}::{3}{4}{5}\n".format( m.group(1), m.group(2), outerNs, innerNs, m.group(4), m.group(5))
m = nsRe.match( line )
if m:
originalNs = m.group(2)
# print("[{0}] originalNs: '{1}'".format(lineNo, originalNs))
# print( " " + line )
# print( " 1:[{0}]\n 2:[{1}]\n 3:[{2}]\n 4:[{3}]".format( m.group(1), m.group(2), m.group(3), m.group(4) ) )
if self.outerNamespace.has_key(originalNs):
outerNs, innerNs = self.outerNamespace[originalNs]
return "{0}{1} {{ namespace {2}{3}{4}\n".format( m.group(1), outerNs, innerNs, m.group(3), m.group(4) )
return line
def mapFile(self, filenameIn, filenameOut ):
print( "Embedding:\n {0}\nas:\n {1}".format( filenameIn, filenameOut ) )
with open( filenameIn, 'r' ) as f, open( filenameOut, 'w' ) as outf:
lineNo = 1
for line in f:
outf.write( self.mapLine( lineNo, line ) )
lineNo = lineNo + 1
print( "Written {0} lines".format( lineNo ) )
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