cmd/gen: Create alias function for Windows PowerShell

Closes #20

README.md

@@ -50,11 +50,11 @@ valid `.hvm` file exists in the current directory.
 
 1. Run `hvm gen alias --help` to find the subcommand for the desired shell.
 2. Run `hvm gen alias <shell> --help` to see the installation instructions.
-3. Run `hvm gen alias <shell>` to generate the alias script.
+3. Run `hvm gen alias <shell>` to generate an alias function for the specified shell.
 
-The `hvm gen alias` command generates alias scripts for bash, fish, zsh, and Windows PowerShell.
+The `hvm gen alias` command generates alias functions for bash, fish, zsh, and Windows PowerShell.
 
-The alias script displays a brief status message each time it is called, if version management is enabled in the current directory. To disable this message, set the `hvm_show_status` variable to `false` in the alias script.
+The alias function displays a brief status message each time it is called, if version management is enabled in the current directory. To disable this message, set the `hvm_show_status` variable to `false` in the alias function.
 
 ## Usage
 

cmd/hvm/alias.go

@@ -22,9 +22,9 @@ import (
 // aliasCmd represents the alias command
 var aliasCmd = &cobra.Command{
 	Use:   "alias",
-	Short: "Generate the alias script for the specified shell",
-	Long: `Generate the alias script for the specified shell.
-See each sub-command's help for details on how to use the generated script.`,
+	Short: "Generate an alias function for the specified shell",
+	Long: `Generate an alias function for the specified shell.
+See each sub-command's help for details on how to use the generated code.`,
 	Run: func(cmd *cobra.Command, args []string) {
 		cmd.Help()
 	},

cmd/hvm/alias_scripts/powershell.ps1

@@ -1,3 +1,20 @@
 # Hugo Version Manager: override path to the hugo executable.
-
-TBD
+function Hugo-Override {
+  Set-Variable -Name "hvm_show_status" -Value $true
+  Set-Variable -Name "hugo_bin" -Value $(hvm status --printExecPath)
+  If ($hugo_bin) {
+    If ($hvm_show_status) {
+      echo "Hugo version management is enabled in this directory."
+      echo "Run 'hvm status' for details, or 'hvm disable' to disable.`n"
+    }
+    & "$hugo_bin" $args
+  } Else {
+    Set-Variable -Name "hugo_bin" -Value $((gcm hugo.exe).Path 2> $null)
+    If ($hugo_bin) {
+      & "$hugo_bin" $args
+    } Else {
+      echo "Command not found"
+    }
+  }
+}
+Set-Alias hugo Hugo-Override

cmd/hvm/bash.go

@@ -28,15 +28,15 @@ var bashScript string
 // bashCmd represents the bash command
 var bashCmd = &cobra.Command{
 	Use:   "bash",
-	Short: "Generate the alias script for bash",
-	Long: `Generate the alias script for the bash shell.
+	Short: "Generate an alias function for bash",
+	Long: `Generate an alias function for the bash shell.
 
 Add the output from this command to $HOME/.bashrc or $HOME/.bash_aliases.
 Open a new shell to activate the alias.
 
-The alias script displays a brief status message each time it is called, if
+The alias function displays a brief status message each time it is called, if
 version management is enabled in the current directory. To disable this
-message, set the "hvm_show_status" variable to "false" in the alias script.`,
+message, set the "hvm_show_status" variable to "false" in the alias function.`,
 	Run: func(cmd *cobra.Command, args []string) {
 		fmt.Print(bashScript)
 	},

cmd/hvm/fish.go

@@ -28,15 +28,15 @@ var fishScript string
 // fishCmd represents the fish command
 var fishCmd = &cobra.Command{
 	Use:   "fish",
-	Short: "Generate the alias script for fish",
-	Long: `Generate the alias script for the fish shell.
+	Short: "Generate an alias function for fish",
+	Long: `Generate an alias function for the fish shell.
 
 Add the output from this command to $HOME/.config/fish/config.fish.
 Open a new shell to activate the alias.
 
-The alias script displays a brief status message each time it is called, if
+The alias function displays a brief status message each time it is called, if
 version management is enabled in the current directory. To disable this
-message, set the "hvm_show_status" variable to "false" in the alias script.`,
+message, set the "hvm_show_status" variable to "false" in the alias function.`,
 	Run: func(cmd *cobra.Command, args []string) {
 		fmt.Print(fishScript)
 	},

cmd/hvm/powershell.go

@@ -28,12 +28,21 @@ var powershellScript string
 // powershellCmd represents the powershell command
 var powershellCmd = &cobra.Command{
 	Use:   "powershell",
-	Short: "Generate the alias script for zsh",
-	Long: `Generate the alias script for powershell.
+	Short: "Generate an alias function for powershell",
+	Long: `Generate an alias function for Windows PowerShell.
 
-The alias script displays a brief status message each time it is called, if
+Instructions:
+
+1. Create a PowerShell profile: New-Item -Path $profile -ItemType File
+2. Open the file with Notepad: notepad $profile
+3. Add the output from this command to the file you just opened
+4. Save the file and exit Notepad
+5. Refresh the current session: . $profile
+
+The alias function displays a brief status message each time it is called, if
 version management is enabled in the current directory. To disable this
-message, set the "hvm_show_status" variable to "false" in the alias script.`,
+message, set the "hvm_show_status" variable to "$false" in the alias function.
+`,
 	Run: func(cmd *cobra.Command, args []string) {
 		fmt.Print(powershellScript)
 	},

cmd/hvm/testscripts/gen.txt

@@ -12,7 +12,7 @@ exec hvm gen
 stdout 'Generate various files.\n'
 
 exec hvm gen alias
-stdout 'Generate the alias script for the specified shell.\n'
+stdout 'Generate an alias function for the specified shell.\n'
 
 exec hvm gen alias bash
 stdout '# Hugo Version Manager: override path to the hugo executable.'

cmd/hvm/zsh.go

@@ -28,15 +28,15 @@ var zshScript string
 // zshCmd represents the zsh command
 var zshCmd = &cobra.Command{
 	Use:   "zsh",
-	Short: "Generate the alias script for zsh",
-	Long: `Generate the alias script for the zsh shell.
+	Short: "Generate an alias function for zsh",
+	Long: `Generate an alias function for the zsh shell.
 
 Add the output from this command to $HOME/.zshrc.
 Open a new shell to activate the alias.
 
-The alias script displays a brief status message each time it is called, if
+The alias function displays a brief status message each time it is called, if
 version management is enabled in the current directory. To disable this
-message, set the "hvm_show_status" variable to "false" in the alias script.`,
+message, set the "hvm_show_status" variable to "false" in the alias function.`,
 	Run: func(cmd *cobra.Command, args []string) {
 		fmt.Print(zshScript)
 	},