✨ Add basic ESearch support #333
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FWIW: I discovered in testing that Yahoo does not return ESEARCH results when |
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This affects `#search`, `#uid_search`, `#sort`, `#uid_sort`, `#thread`,
and `#uid_thread`.
Prior to this, sending a parenthesized list in the search criteria for
any of these commands required the use of strings, which are converted
to `RawData`, which has security implications with untrusted inputs.
With this change, arrays will only be converted into SequenceSet when
_every_ element in the array is a valid SequenceSet input. Otherwise,
the array will be left alone, which allows us to send parenthesized
lists without using strings and RawData.
For example, some searches this change enables:
* Combining criteria to pass into `OR`, `NOT`, `FUZZY`, etc.
* `search(["not", %w(flagged unread)])`
converts to: `SEARCH not (flagged unread)`
* Adding return options (we should also add a return kwarg).
* `uid_search(["RETURN", ["PARTIAL", 1..50], "UID", 12345..67890])`
converts to: `UID SEARCH RETURN (PARTIAL 1:50) UID 12345:67890`
* Note that `PARTIAL` supports negative ranges, which can't be coerced
to SequenceSet. They'll need to be sent as strings, for now.
* Note that searches with return options should return ESEARCH
results, which are currently unsupported. See ruby#333.
This _should_ be backward compatible: previously these inputs would
raise an exception.
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For new data structs, I'd prefer frozen by default and I don't want to support the entire Struct API. Data is perfect, but it's not available until ruby 3.2. So this adds a DataLite class that closely matches ruby 3.2's Data class, and it can be a drop-in replacement for Data. Net::IMAP::Data is an alias for Net::IMAP::DataLite, so when we remove our implementation, the constant will resolve to ruby's ::Data. Ideally, we wouldn't define this on newer ruby versions at all, but that breaks the YAML serialization for our test fixtures. The tests (and some of the implementation) have been copied from the polyfill-data gem and updated so that they use "Data" as it is resolved inside the "Net::IMAP" namespace. Copyright notices have been added to the appropriate files to satisfy the MIT license terms. Co-authored-by: Jim Gay <[email protected]>
Parses +ESEARCH+ into ESearchResult, with support for: * RFC4466 syntax * RFC4731 `ESEARCH` * RFC5267 `CONTEXT=SEARCH` * RFC6203 `SEARCH=FUZZY` * RFC9394 `PARTIAL` For compatibility, `ESearchResult#to_a` returns an array of integers (sequence numbers or UIDs) whenever any `ALL` or `PARTIAL` result is available.
If the server returns both `ESEARCH` and `SEARCH`, both are cleared from the responses hash, but only the `ESEARCH` is returned. When the server doesn't send any search responses: If return options are passed, return an empty ESearchResult. It will have the appropriate `tag` and `uid` values, but no `data`. Otherwise return an empty `SearchResult` (changed from empty array).
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