Tcl

Check if a MIME Part is Plain Text

Demonstrates the Chilkat Mime.IsPlainText method, which returns whether the Content-Type is exactly text/plain. It takes no arguments and applies to the current part.

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

Background: Inside a multipart/alternative, this is how you pick out the plain-text rendering — the fallback to show when HTML cannot be displayed, or the version to index for search. It is the specific counterpart to IsHtml.

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Tcl


load ./chilkat.dll

set success 0

#  Demonstrates the Mime.IsPlainText method, which returns whether the Content-Type is text/plain.  It takes no arguments and applies to the current
#  part.  This example iterates the parts of a multipart message and reports which ones match.

set mime [new_CkMime]

set success [CkMime_LoadMimeFile $mime "qa_data/multipart_message.eml"]
if {$success == 0} then {
    puts [CkMime_lastErrorText $mime]
    delete_CkMime $mime
    exit
}

set n [CkMime_get_NumParts $mime]
set part [new_CkMime]

for {set i 0} {$i <= [expr $n - 1]} {incr i} {
    set success [CkMime_PartAt $mime $i $part]
    if {$success == 0} then {
        puts [CkMime_lastErrorText $mime]
        delete_CkMime $mime
        delete_CkMime $part
        exit
    }

    if {CkMime_IsPlainText $part} then {
        puts "Part $i ([CkMime_contentType $part]) is plain text."
    }

}

delete_CkMime $mime
delete_CkMime $part