How to access source code files and list directories using GitLab API?

Question

I am using GitLab and I completed setup as described in Gitlab installation instructions, I am now trying to access its RestFul API to perform tasks like create/delete Projects

Answer 1

I am assuming that project snippets refer to source code files or any other files within the project

No, you can see snippets in the GitLab demo project: diaspora snippets.
They are in a separate tabs than the "Files" tab.
They would be the equivalent of GitHub gist.

Have a look at the repository API, like:

List repository tree

Get a list of repository files and directories in a project.

GET /projects/:id/repository/tree

Raw blob content

Get the raw file contents for a file.

GET /projects/:id/repository/commits/:sha/blob

astratto mentions that the new API (6.x) requires that a filepath is appended:

GET /projects/:id/repository/blobs/:sha?filepath=:filepath