#(C)2007 Twm Davies

import urllib
import re
import os
import pickle
import sys

temp = "c:\\temp\\"
picklefilename = os.path.join(temp, "kerr_lookupdata.txt")
try:
    os.mkdir(temp)
except:
    pass

# common variables

def extractErrorInfo(matchstr):
    
    rawstr = r"""<tr class="\D*"><td>\s*<strong class="\D*">(.*)</strong>\s*</td>\s*<td>\s*(.*)\s*</td>\s*<td>\s*<i class="spip">(.*)</i>\s*</td>\s*</tr>"""
    rawstr2 = r"""<tr class="\D*"><td>\s*<strong class="\D*">(.*)</strong>\s*</td>\s*<td>\s*(.*)\s*</td><td>\s*.*"""
    rawstr3 = r"""<td>\s*(\w*)\s*</td>.*<td>\s*([-0-9]*)\s*</td>"""

   # method 1: using a compile object
    compile_obj = re.compile(rawstr)
    match_obj = compile_obj.search(matchstr)

    if(match_obj == None):
        compile_obj2 = re.compile(rawstr2)
        match_obj = compile_obj2.search(matchstr)

    if(match_obj == None):
        compile_obj3 = re.compile(rawstr3)
        match_obj = compile_obj3.search(matchstr)

    if(match_obj):        
        # Retrieve group(s) from match_obj
        all_groups = match_obj.groups()

        # Retrieve group(s) by index
        group_1 = match_obj.group(1)
        group_2 = match_obj.group(2)
        try:
            poo = group_3 = match_obj.group(3)
        except IndexError:
            return (group_1.strip(), group_2.strip(), "")
        else:
            return (group_1.strip(), group_2.strip(), group_3.strip())
    else:
        return None

def extractcodes(line):
    fields = extractErrorInfo(line)
    if(fields):
        params = list(extractErrorInfo(line))
        params[1] = params[1].replace("--","-")
        params[0] = params[0].replace("\"","")
        params[0] = params[0].replace("\'","")
        params[0] = params[0].replace("\\","")
        params[2] = params[2].replace("\"","")
        params[2] = params[2].replace("\'","")
        params[2] = params[2].replace("\\","")

        try:
            params[1] = int(params[1])
        except ValueError:
            return None
        return params
    return None

    
def test():
    tcs = ["""<tr class="row_even"><td> <strong class="spip">KErrNotFound</strong> </td><td>-1</td><td><i class="spip">Unable to find the specified object</i></td></tr>""",
    """<tr class="row_odd"><td><strong class="spip">KErrEtelNotCallOwner</strong> </td><td>-2000</td><td> </td></tr>""",
    """<tr class="row_even"><td> KErrAvctpBadAddress</td><td> -6400 </td><td><i class="spip">AVCTP bad address </i> </td></tr>""",
    """<tr class="row_even"><td> KErrAvctpBadAddress</td><td> --6400 </td><td><i class="spip">AVCTP bad address </i> </td></tr>""",
    """<tr class="row_even"><td> KErrAvctpBadAddress</td><td> MOO </td><td><i class="spip">AVCTP bad address </i> </td></tr>"""]

    for testcase in tcs:            
        print extractcodes(testcase)
 
def regenerateErrorFile():
    file = urllib.urlopen("http://newlc.com/Symbian-OS-Error-Codes.html")
    lines = file.readlines()

    lookupcode = -5
    look_up = {}

    for line in lines:
       fields = extractcodes(line)
       if(fields):
           look_up[fields[1]]= (fields[0],fields[2])
           
    output = open(picklefilename,"wb")
    pickle.dump(look_up, output)
    return look_up

#test()

try:
    pkl_file = open(picklefilename, 'rb')
    lookup = pickle.load(pkl_file)
    pkl_file.close()
except IOError:
    print "Re-Generating file"
    lookup = regenerateErrorFile()
    

  
args = sys.argv
if(len(args)!=2):
    print "Usage kerr <errorcode>"
    print "e.g kerr -1" 
    sys.exit()

try:                             
    errtupe = lookup[int(args[1])]
    print "%s [%s]"% errtupe
except:
    print "Unknown error"