Treatment compress

compression/zlib::compress

Parameters

↳ var level: i32 = 6

Inputs

⇥ data: Stream<byte>

Outputs

↦ completed: Block<void>
↦ compressed: Stream<byte>
↦ error: Block<string>
↦ failed: Block<void>
↦ finished: Block<void>

Compresses data with zlib.

The bytes received through data are compressed with zlib at level, from 0 (no compression) to 9 (smallest), 6 by default, and given through compressed while they come, as one zlib stream.

Once data ends and everything is given, completed is emitted. If level is not supported or compression fails, failed is emitted and error contains the reason. finished is emitted in every case.

graph LR
     T("compress()")
     B["… 🟦 🟦 🟦"] -->|data| T

     T -->|compressed| O["… 🟪 🟪"]
     T -->|completed| C["〈🟩〉"]

     style B fill:#ffffff,stroke:#ffffff
     style O fill:#ffffff,stroke:#ffffff
     style C fill:#ffffff,stroke:#ffffff