🔀 Merge pull request #15 from gluons/feat-print-all-aliases

Add `Get-Git-Aliases`

Author: gluons

src/git-aliases.psm1

@@ -2,6 +2,7 @@
 
 $FunctionsToExport = @(
 	'Get-Git-CurrentBranch',
+	'Get-Git-Aliases',
 	'g',
 	'ga',
 	'gaa',

src/utils.ps1

@@ -1,5 +1,10 @@
+<#
+.SYNOPSIS
+	Get current git branch.
+#>
 function Get-Git-CurrentBranch {
 	git symbolic-ref --quiet HEAD *> $null
+
 	if ($LASTEXITCODE -eq 0) {
 		return git rev-parse --abbrev-ref HEAD
 	} else {
@@ -12,3 +17,88 @@ function Remove-Alias ([string] $AliasName) {
 		Remove-Item Alias:$AliasName -Force 2> $null
 	}
 }
+
+function Format-AliasDefinition {
+	param (
+		[Parameter(Mandatory = $true)][string] $Definition
+	)
+
+	$definitionLines = $Definition.Trim() -split "`n" | ForEach-Object {
+		$line = $_.TrimEnd()
+
+		# Trim 1 indent
+		if ($_ -match "^`t") {
+			return $line.Substring(1)
+		}
+		elseif ($_ -match '^    ') {
+			return $line.Substring(4)
+		}
+
+		return $line
+
+	}
+
+	return $definitionLines -join "`n"
+}
+
+<#
+.SYNOPSIS
+	Get git aliases' definition.
+.DESCRIPTION
+	Get definition of all git aliases or specific alias.
+.EXAMPLE
+	PS C:\> Get-Git-Aliases
+	Get definition of all git aliases.
+.EXAMPLE
+	PS C:\> Get-Git-Aliases -Alias gst
+	Get definition of `gst` alias.
+#>
+function Get-Git-Aliases ([string] $Alias) {
+	$esc = [char] 27
+	$green = 32
+	$magenta = 35
+
+	$Alias = $Alias.Trim()
+	$aliases = Get-Command -Module git-aliases
+
+	if (-not ([string]::IsNullOrEmpty($Alias))) {
+		$foundAliases = $aliases | Where-Object -Property Name -Value $Alias -EQ
+
+		if ($foundAliases -is [array]) {
+			return Format-AliasDefinition($foundAliases[0].Definition)
+		}
+		else {
+			return Format-AliasDefinition($foundAliases.Definition)
+		}
+	}
+
+	$aliases = $aliases | ForEach-Object {
+		$name = $_.Name
+		$definition = Format-AliasDefinition($_.Definition)
+		$definition = "$definition`n" # Add 1 line break for some row space
+
+		return [PSCustomObject]@{
+			Name       = $name
+			Definition = $definition
+		}
+	}
+
+	$cols = @(
+		@{
+			Name       = 'Name'
+			Expression = {
+				# Print alias name in green
+				"$esc[$($green)m$($_.Name)$esc[0m"
+			}
+		},
+		@{
+			Name       = 'Definition'
+			Expression = {
+				# Print alias definition in yellow
+				"$esc[$($magenta)m$($_.Definition)$esc[0m"
+			}
+		}
+	)
+
+	return Format-Table -InputObject $aliases -AutoSize -Wrap -Property $cols
+}