Jbl/streamslib

[ptahmose]

Description

This PR adds support for reading CZIs over an http- or https-connection. Support for http/https-stream is added to libCZI, and CZICmd is enabled to use it.

• Infrastructure for an extensible class-factory for stream-objects is added (part of the public API).
• An implementation of a stream-object based on libCURL is added.
• CZICmd has been enhanced to be able to choose the stream-class to be used for reading the source.
• Updating the build-system accordingly

Note that there are unittests (test_curlhttpstream.cpp) which access an external resource via https. Those tests take care that if the http-stream-class is not available or if there is something wrong with the connection, they report an inconclusive result rather than fail.

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested?

• unittests
• locally running CZICmd
• I built the library on a bunch of different systems

Checklist:

• I followed the Contributing Guidelines.
• I did a self-review.
• I commented my code, particularly in hard-to-understand areas.
• I updated the documentation.
• I updated the version of libCZI following Versioning of libCZI depending on the type of change
  • Bug fix -> PATCH
  • New feature -> MINOR
  • Breaking change -> MAJOR
• I have added tests that prove my fix is effective or that my feature works.
• New and existing unit tests pass locally with my changes.

[swg08]

Looks good to me. I just glanced over the PR in awe.

[DaveyJonesBitPail]

Looks good to me! Major kudos for putting this together 😄

[DaveyJonesBitPail]

Cosmetic and url-sanitation comment changes didn't change my mind :) Still approved!