(CkPython) Fetch 1st N Headers of Search Results

Calls Search to get a message set, then downloads the 1st N messages in the message set. There are two equivalent ways of doing it: (1) iterate from 0 to N-1 and download each message individually, or (2) create a new message set that contains the 1st N messages and pass it to FetchHeaders. Both are demonstrated here.

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import sys
import chilkat

# This example assumes the Chilkat API to have been previously unlocked.
# See Global Unlock Sample for sample code.

imap = chilkat.CkImap()

# Connect to an IMAP server.
# Use TLS
imap.put_Ssl(True)
imap.put_Port(993)
success = imap.Connect("imap.someMailServer.com")
if (success != True):
    print(imap.lastErrorText())
    sys.exit()

# Login
success = imap.Login("****","****")
if (success != True):
    print(imap.lastErrorText())
    sys.exit()

# Select an IMAP mailbox
success = imap.SelectMailbox("Inbox")
if (success != True):
    print(imap.lastErrorText())
    sys.exit()

# We can choose to fetch UIDs or sequence numbers.
fetchUids = True
# Get the message IDs of all the emails in the mailbox
# messageSet is a CkMessageSet
messageSet = imap.Search("ALL",fetchUids)
if (imap.get_LastMethodSuccess() == False):
    print(imap.lastErrorText())
    sys.exit()

numFound = messageSet.get_Count()
if (numFound == 0):
    print("No messages found.")

    sys.exit()

# Get the 1st 10 messages in messageSet.
upperBound = 10
if (numFound < upperBound):
    upperBound = numFound

i = 0
bUid = messageSet.get_HasUids()
while i < upperBound :

    # email is a CkEmail
    email = imap.FetchSingleHeader(messageSet.GetId(i),bUid)
    if (imap.get_LastMethodSuccess() == False):
        print(imap.lastErrorText())

        sys.exit()

    else:
        # Do whatever is needed with the email.. 
        # ....

    i = i + 1

# Alternatively, create a new message set containing the 1st 10 message id's (UID's) 
# from the search results message set:
firstTen = chilkat.CkMessageSet()

for i in range(0,upperBound):
    firstTen.InsertId(messageSet.GetId(i))

# Download the 1st ten headers:

# bundle is a CkEmailBundle
bundle = imap.FetchHeaders(firstTen)
if (imap.get_LastMethodSuccess() == False):

    print(imap.lastErrorText())
    sys.exit()

# Other examples show how to iterate over the emails contained within the bundle...

# Disconnect from the IMAP server.
success = imap.Disconnect()