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Ran 13 Jan 2015 01:22PM UTC

Files 58

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Committed 13 Jan 2015 01:18PM UTC coverage: 86.622%. Remained the same

Job # 6.2

Build Type

push

travis-ci

Committed by Nils Winkler

Commit Message

Automatically detecting _smart Git hosts_.

Added logic to automatically detect smart Git hosts that allow shallow
cloning. This is done by sending an `ls-remote` request to the server
and then evaluating the returned HTTP header fields. For this, Curl
verbose logging is enabled for the `ls-remote` request, since Curl
verbose logging sends the returned HTTP headers to `stderr`.

If the `stderr` output contains the desired header

  Content-Type: application/x-git-upload-pack-advertisement

then the server supports shallow cloning.

This approach uses Git and Curl for the heavy lifting. Instead of
implementing the request to the server using a simple HTTP client, Git
is used, since it takes care of authentication using stored credentials.

The used approach should also work for BitBucket, which only sends the
Content-Type header when a specific user agent is used. Using Git to
make the request enables this behavior.

The function to detect the smart Git host
(`GitRemoteResolver.prototype._supportsShallowCloning`) returns a
promise that is resolved when the server's request is evaluated. The
promise handling required an addition to `GitHubResolver.js` - to always
resolve the promise to `true`, since GitHub supports shallow cloning.

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