# File: strmisc.py
# Do some miscellaneous things with strings
#
# Matt Bishop, ECS 36A, Winter 2019
#
while True:
    # read in a string; quit on EOF
    try:
        instr = input("Enter a string: ")
    except EOFError:
        break
    except:
        print("Unknown error; EOF to end")
        continue
    #
    # put quotes around the string to show its boundaries when it is printed
    #
    prstr = '"' + instr + '"'
    #
    # next, get the substring to find; quit on EOF
    try:
        ctstr = input("What substring should I count? ")
    except EOFError:
        break
    except:
        print("Unknown error; EOF to end")
        continue
    #
    # put quotes around the string to show its boundaries when it is printed
    #
    prctstr = '"' + ctstr + '"'
    # now print the count
    count = instr.count(ctstr)
    print(prstr, "contains the string", prctstr, count, "times")
    #
    # does it start and/or end with the string?
    #
    if instr.startswith(ctstr):
        print(prstr, "begins with", prctstr)
    if instr.endswith(ctstr):
        print(prstr, "ends with", prctstr)

    #
    # now do a replacement
    #
    repstr = instr.replace(ctstr, "XXX")
    prrepstr = '"' + repstr + '"'
    print("Replacing", ctstr, "with XXX in", prstr, "gives", prrepstr)