Functions/Get-GitBranch.ps1

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# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

function Get-GitBranch {
    <#
   .SYNOPSIS
   Gets the branches in a Git repository.

   .DESCRIPTION
   The `Get-GitBranch` function returns a list of all the branches in a repository.

   Use the `Current` switch to return just the current branch.

   It defaults to the current repository. Use the `RepoRoot` parameter to specify an explicit path to another repo.

   .EXAMPLE
   Get-GitBranch -RepoRoot 'C:\Projects\PowerGit' -Current

   Returns an object representing the current branch for the specified repo.

   .EXAMPLE
   Get-GitBranch

   Returns objects for all the branches in the current directory.
   #>

    [CmdletBinding()]
    [OutputType([PowerGit.BranchInfo])]
    param(
        [string]
        # Specifies which git repository to check. Defaults to the current directory.
        $RepoRoot = (Get-Location).ProviderPath,

        [Switch]
        # Get the current branch only. Otherwise all branches are returned.
        $Current
    )

    Set-StrictMode -Version 'Latest'

    $repo = Find-GitRepository -Path $RepoRoot -Verify
    if ( -not $repo ) {
        return
    }

    try {
        if ( $Current ) {
            New-Object PowerGit.BranchInfo $repo.Head
            return
        } else {
            $repo.Branches | ForEach-Object { New-Object PowerGit.BranchInfo $_ }
            return
        }
    } finally {
        $repo.Dispose()
    }
}