Thread overview
Git-repo-root relative path
6 days ago
Per Nordlöw
November 16
I need a function that gets the relative path of a file in a Git-repo and preferrably also its status.

Either via an external call to `git` or optionally via `libgit` (if available).

Which DUB packages do you prefer?
November 16
On Monday, 16 November 2020 at 10:21:27 UTC, Per Nordlöw wrote:
> Which DUB packages do you prefer?

https://code.dlang.org/packages/dlibgit seems good. But that requires `libgit` to be installed. It would be nice to have a fallback to calling `git`.
November 18
On Monday, 16 November 2020 at 10:21:27 UTC, Per Nordlöw wrote:
> I need a function that gets the relative path of a file in a Git-repo and preferrably also its status.

I'm not sure I understand the question. I have written two programs, hopefully one of them does what you want :D

> Either via an external call to `git` or optionally via `libgit` (if available).
>
> Which DUB packages do you prefer?

For such small tasks, the easiest is to just use the shell.

1st answer:

Initially I thought that you want to convert the current working directory (I don't know why - I didn't read well the question apparently :D) to a path relative to the root git repo path. Here's my solution to that problem:

```d
import std.exception : enforce;
import std.format : format;
import std.file : getcwd;
import std.path : asRelativePath;
import std.process : executeShell;
import std.stdio : writeln;
import std.string : stripRight;

void main()
{
    auto cwd = getcwd();
    const gitRootPathResult = executeShell("git rev-parse --show-toplevel");
    enforce(
        gitRootPathResult.status == 0,
        "`git` is not installed, or '%s' is not a git repo".format(cwd)
    );
    // Trim trailing whitespace from the shell invocation
    const gitRoot = gitRootPathResult.output.stripRight;
    debug writeln("Git root path: ", gitRoot);
    gitRoot
        .asRelativePath(getcwd())
        .writeln;
}
```

Example usage:

```
$ cd ~/code/repos/dlang/dlang/dmd/src/dmd/backend/

$ dmd -run ~/code/cwd_to_git_relative_path.d
../../..

# Sanity check:

$ dmd -debug -run ~/code/cwd_to_git_relative_path.d
Git root path: /home/zlx/code/repos/dlang/dlang/dmd
../../..

$ cd '../../..' && pwd
/home/zlx/code/repos/dlang/dlang/dmd
```

2nd answer:

Reading a second time, I don't understand what you meant by "gets the relative path of a file in a Git-repo". Did you mean that it receives an absolute path (or relative to current working directory) to a file and converts it to a path relative to a git repo? If so, here's my solution and for determining the status of a file:

https://gist.github.com/PetarKirov/b4c8b64e7fc9bb7391901bcb541ddf3a
6 days ago
On Wednesday, 18 November 2020 at 23:43:15 UTC, Petar Kirov [ZombineDev] wrote:
> https://gist.github.com/PetarKirov/b4c8b64e7fc9bb7391901bcb541ddf3a

Thanks a lot!