Unicode C

Save All MIME Attachments to Files

Demonstrates the Chilkat Mime.PartsToFiles method, which recursively traverses the MIME tree and saves each part having a nonempty filename parameter to a directory. The first argument is the destination directory and the second is a StringTable that receives the saved filenames.

Note: The file paths are relative to the application's current working directory. Absolute paths may also be used. Supply the paths appropriate to your own environment.

Background: This extracts every named attachment from a message in one call, walking the whole tree so it finds attachments nested inside multipart containers. It saves only parts that declare a filename — inline body parts without one are skipped — and reports what it wrote via the StringTable, which is handy for logging or follow-up processing. The destination directory must already exist.

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Unicode C

#include <C_CkMimeW.h>
#include <C_CkStringTableW.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkMimeW mime;
    HCkStringTableW savedFiles;
    int n;
    int i;
    const wchar_t *name;

    success = FALSE;

    mime = CkMimeW_Create();
    success = CkMimeW_LoadMimeFile(mime,L"qa_data/multipart_message.eml");
    if (success == FALSE) {
        wprintf(L"%s\n",CkMimeW_lastErrorText(mime));
        CkMimeW_Dispose(mime);
        return;
    }

    //  Recursively traverse the MIME tree and save each part that has a nonempty "filename" parameter
    //  to a directory.  The 1st argument is the destination directory and the 2nd is a StringTable
    //  that receives the saved filenames.
    savedFiles = CkStringTableW_Create();
    success = CkMimeW_PartsToFiles(mime,L"qa_output/attachments",savedFiles);
    if (success == FALSE) {
        wprintf(L"%s\n",CkMimeW_lastErrorText(mime));
        CkMimeW_Dispose(mime);
        CkStringTableW_Dispose(savedFiles);
        return;
    }

    n = CkStringTableW_getCount(savedFiles);
    wprintf(L"Saved %d files:\n",n);

    for (i = 0; i <= n - 1; i++) {
        name = CkStringTableW_stringAt(savedFiles,i);
        if (CkStringTableW_getLastMethodSuccess(savedFiles) == FALSE) {
            wprintf(L"%s\n",CkStringTableW_lastErrorText(savedFiles));
            CkMimeW_Dispose(mime);
            CkStringTableW_Dispose(savedFiles);
            return;
        }

        wprintf(L"%s\n",name);
    }



    CkMimeW_Dispose(mime);
    CkStringTableW_Dispose(savedFiles);

    }