struct logging

import sys
import os.path
import re

if len( sys.argv ) < 2:
    sys.exit( "usage: " + os.path.split( sys.argv[ 0 ] )[ 1 ] + " <h-file>" )

rgStructName = re.compile( r"struct\s+([a-zA-Z0-9_]+)" )
insideComment = False
insideStruct = False
structName = ""
formatStr = ""
argsStr = ""
firstField = True

hFile = open( sys.argv[ 1 ], "rt" )
outFileName = os.path.splitext( sys.argv[ 1 ] )[ 0 ] + "_logging.h"
outFile = open( outFileName, "wt" )
for line in hFile:
    line = line.strip()
    if line.startswith( "//" ):
        continue
    if not insideComment:
        if line.startswith( "/*" ):
            insideComment = True
    if line.endswith( "*/" ):
        insideComment = False
        continue
    if insideComment:
        continue

    if not insideStruct:
        m = rgStructName.search( line )
        if m != None:
            insideStruct = True
            structName = m.group( 1 )
            formatStr = "#define " + structName.upper() + "_FORMAT \""
            argsStr = "#define " + structName.upper() + "_ARGS(cdr) "
            firstField = True
    else:
        if line.find( "}" ) != -1:
            insideStruct = False
            formatStr += "\""
            print formatStr
            print argsStr
            outFile.write( formatStr + "\n" )
            outFile.write( argsStr + "\n" )
        else:
            commentPos = line.find( "//" )
            if commentPos != -1:
                line = line[ 0 : commentPos ]
            isPointer = line.find( "*" ) != -1
            words = line.split()
            if words[ len( words ) - 1 ].strip() == ";":
                del words[ len( words ) - 1 ]
            fieldName = words[ len( words ) - 1 ]
            del words[ len( words ) - 1 ]
            fieldType = "".join( words )
            if fieldName.startswith( "*" ):
                fieldName = fieldName[ 1: ]
            if fieldName.endswith( ";" ):
                fieldName = fieldName[ : len( fieldName ) - 1 ]
            if not firstField:
                formatStr += ", "
                argsStr += ", "
            formatStr += fieldName + "="
            if isPointer:
                formatStr += "%p"
            else:
                if fieldType.find( "int" ) != -1:
                    formatStr += "%d"
                elif fieldType.find( "float" ) != -1:
                    formatStr += "%f"
            argsStr += "(cdr)->" + fieldName
            firstField = False