import os
def strToAsc(strIn) :
    # uses ord(c)
    sList=[]  # empty list
    for ch in strIn :
        sList.append(ord(ch))
    #for end
    #print(sList)
    return (sList)
#def end
def replaceNextEntity(eDict,lineIn) :
    # by D@CC on 2022FJun18
    # replaces eName by eNew in line
    # e.g. lineNew=replaceEntity(eDict,"count",line)
    # returns lineNew, True if success
    # returns Null, False if failure
    # eDict is of form [(count,cValue), etc]
    #print("***enterring replaceNextEntity")
    #print("***lineIn:"+lineIn)
    
    #print("eDict",eDict)
    
    #find an entity to be replaced in line
    eB=lineIn.find("&")
    eE=lineIn.find("+")
    isSuccess=True
    isProcessing=True
    while isProcessing :
        eName=""    # default value
        if eB==-1 : isSuccess=False ; break
        if eE<=eB+2 : isSuccess=False ; break
        eName = lineIn[eB+1:eE]
        #print("eName:"+eName)        
        eNew=eDict[eName]  # look up eName in eDict
        if eNew=="" : isSuccess=False ; break
        isProcessing=False    #done
    #while end
    if isSuccess==True :
        #print("eNew:"+eNew)
        pre=lineIn[0:eB]
        post=lineIn[eE+1:]
        lineNew=pre+eNew+post
    else:
        #print("Soft Warning: couldn't find |"+eName+"|")
        eNew=""
        #print("eNew:"+eNew)
        lineNew=lineIn
    #if end

    #isSuccess=True
    #lineNew=line.translate(eDict)
    #print("lineNew:"+lineNew)
    #lineNew=line
    return lineNew,isSuccess
#def end

#print(strToAsc("a b"))

progName="IXc_v0c.py"
print("progName:"+progName)
#exit
print(" first working version of "+progName)
print(" works for multiple occurrences of multiple entityNames")
print(" but v0c doesn't create eDict{} ")
print("  for replaceEntityName() yet.")
print(" comprehensive error checking is not done yet.")
print(" by D@CC on 2022FJun18")

eDict={"count":"3","count2":"4"}

if False :
    # testing only
    line = "testing=|&count+|"
    print("line:"+line)
    lineNew,isOK=replaceNextEntity(eDict,line)
    print("isOK:",line+":"+lineNew)
    exit
#if end
    
# process commandIn
if True :
    # if False needs to read command from user.
    ix_commandIn="python3.py test1.ix?count=3"
#if end
print(ix_commandIn)
ix_fileInName="test1"
ix_fileOutName=ix_fileInName
ix_runIn= "python3"
ix_runInExt =".py"
ix_fileIn=ix_fileInName+".ix"
ix_fileOut=ix_fileOutName+ix_runInExt
ix_entityNew="3"

# open ix_fileIn and read it
print("  ix_fileIn :"+ix_fileIn)
ix_in = open(ix_fileIn)
lines=ix_in.readlines()

# open ix_fileOut
print("  ix_fileOut:"+ix_fileOut)
ix_out = open(ix_fileOut,"w")

# process ix_fileIn
cnt=0
for lineIn in lines :
    #print("lineIn:",strToAsc(lineIn))
    isChanged=False
    inLen=len(lineIn)
    #remove trailing LF of record read.
    ix_lineIn=lineIn[0:inLen-1]
    #print("ix_lineIn",strToAsc(ix_lineIn))
    ix_lineInTest=ix_lineIn+"  "
    cnt=cnt+1
    #print()
    #print(cnt, end="")
    #print("ix_lineInTest:"+ix_lineInTest)
    # is there an ampersand in a line without a null entity BOL
    #print("|"+ix_lineInTest[0:4]+"|")
    isToProcess=True
    #print("[0:2]:"+ix_lineInTest[0:2]+"|")
    if ix_lineInTest[0:2]=="&+" :
        #print("found &#, record not processed", end="")
        isToProcess=False
    #if end
    #print("[0:1]:"+ix_lineInTest[0:1]+"|", end="")
    if ix_lineInTest[0:1]=="#" :
       #print("found #, record not processed", end="")
       isToProcess=False
    #if end
    if isToProcess==True : 
        #print("processing:"+ix_lineIn, end="")
        if True :  #v0c
            lineNew,isOK=replaceNextEntity(eDict,ix_lineIn)
            #print("rNE returned lineNew:"+lineNew)
            if isOK :
                isChanged=True
                ix_lineOut = lineNew
            else:
                isChanged=False
                ix_lineOut = lineNew
            #if end
            #v0c calculates ix_lineOut
            #           and isChanged
        #if end
    #if end
    # whether isChanged or not, ix_lineOut contains a good line
    # but perhaps a LF must be added to the line
    if isChanged==True :
        ix_lineOut=ix_lineOut+chr(10)  # add a LF
        #print("ix_lineOut:"+out)
        #print("write ix_lineOut:",strToAsc(ix_lineOut))
        ix_out.write(ix_lineOut)
    else:
        # this  line was not changed
        out=lineIn
        check=lineIn+"   "
        first3=check[0:3]
        #print("first3:"+first3+"|")
        #print("out:"+out)
        if first3!="&+ " : # skip entity initial value records
            #ix_out.write("")
            #print("write lineIn:",strToAsc(lineIn))
            #ix_out.write(lineIn)
            ix_out.write(lineIn)
        #if end
    #if end
#for end
#print("eof")

#close files
ix_in.close()
ix_out.close()
#   run the new fileOut
ix_run = ix_runIn+" "+ix_fileOut
print("***Running: "+ix_run+ " *********************")
os.system(ix_run)
print("end of "+progName)