Method Compute

Namespace: MailFathom.Application.Emails.Chunking

Assembly: MailFathom.Application.dll

Compute(EmailChunkingRules, bool, string)

Computes the identity of one chunk from its text and the rules that produced it.

public static EmailChunkContentHash Compute(EmailChunkingRules rules, bool isDerivedFromLossyHtml, string text)

Parameters

rules EmailChunkingRules: The boundary rules the chunk was cut to.
isDerivedFromLossyHtml bool: Whether the text the chunk came from was inferred from markup.
text string: The chunk's own text.

Returns

EmailChunkContentHash: The chunk's content hash.

Remarks

Every text field is length-prefixed and every number is written big-endian, so the encoding is one-to-one and the digest depends on the values alone rather than on the machine that computed it. The lossy-HTML marker is covered as well as the rules: a passage read from markup and the same passage read from a plain-text part are worth different amounts to a later ranking, so they are not one chunk under two names.

Exceptions

ArgumentNullException: Thrown when rules or text is null.