Unicode C++

Load a MessageSet from a Compact String

Demonstrates the Chilkat MessageSet.FromCompactString method, which clears the set and loads message identifiers from compact IMAP message-set syntax. The only argument is the compact string: a colon specifies an inclusive ascending range, and commas separate values or ranges. This example loads 1:5,8:10 and prints the result as a comma-separated list.

Background: Compact message-set syntax is how IMAP itself expresses groups of messages — 1:5,8:10 is far more concise than listing every id. FromCompactString is the inverse of ToCompactString: it parses that text into a set you can pass to Imap methods. Duplicates are removed, identifiers are sorted ascending, and the existing HasUids setting is preserved. Note the string carries only the numbers — it does not record whether they are UIDs or sequence numbers.

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#include <CkMessageSetW.h>

void ChilkatSample(void)
    {
    bool success = false;

    //  Demonstrates the MessageSet.FromCompactString method, which loads a set of message
    //  identifiers from compact IMAP message-set syntax.  The only argument is the compact string.
    //  A colon specifies an inclusive range, and commas separate values or ranges.

    CkMessageSetW msgSet;

    //  Load a compact message set.  "1:5,8:10" expands to 1,2,3,4,5,8,9,10.
    success = msgSet.FromCompactString(L"1:5,8:10");
    if (success == false) {
        wprintf(L"%s\n",msgSet.lastErrorText());
        return;
    }

    wprintf(L"Count: %d\n",msgSet.get_Count());

    //  Show the loaded identifiers in comma-separated form.
    const wchar_t *csv = msgSet.toCommaSeparatedStr();
    wprintf(L"%s\n",csv);
    }