Refactor the Terraform aliases and functions.

First of all, a lot of common code is now in a single file (the tf shell
script). Another benefit is that the `tf` script can be used by others,
as a way to make workspaces and variable files easier.

.bashrc

@@ -146,8 +146,10 @@ alias screenshot-cleanup='find "$HOME/Pictures" -name "Screenshot from *.png" -d
 alias smtp-server='python3 -m smtpd -ndc DebuggingServer'
 alias sudo="sudo "
 alias sudome="sudome "
-alias tfa='terraform apply tfplan'
-alias tfvf='tfv && terraform fmt -diff'
+alias tfa='tf apply tfplan'
+alias tfaa='tf apply -auto-approve'
+alias tfp='tf plan -out tfplan'
+alias tfvf='tf validate && tf fmt -diff'
 alias todo="vim \$HOME/Documents/TODO.yml"
 # shellcheck disable=SC2142
 alias tolower='awk "{print tolower(\$0)}"'
@@ -257,56 +259,6 @@ sync_podcasts () (
     unison podcasts
 )
 
-tfaa () {
-    workspace="$(terraform workspace show)"
-    if [ "$workspace" = "default" ] || [ ! -f "$workspace.tfvars" ]
-    then
-        terraform apply -auto-approve "$@"
-    else
-        terraform apply -auto-approve -var-file "$workspace.tfvars" "$@"
-    fi
-}
-
-tfi () {
-    workspace="$(terraform workspace show)"
-    if [ "$workspace" = "default" ] || [ ! -f "$workspace.tfvars" ]
-    then
-        terraform import "$@"
-    else
-        terraform import -var-file "$workspace.tfvars" "$@"
-    fi
-}
-
-tfp () {
-    workspace="$(terraform workspace show)"
-    if [ "$workspace" = "default" ] || [ ! -f "$workspace.tfvars" ]
-    then
-        terraform plan -out tfplan "$@"
-    else
-        terraform plan -out tfplan -var-file "$workspace.tfvars" "$@"
-    fi
-}
-
-tfr () {
-    workspace="$(terraform workspace show)"
-    if [ "$workspace" = "default" ] || [ ! -f "$workspace.tfvars" ]
-    then
-        terraform refresh "$@"
-    else
-        terraform refresh -var-file "$workspace.tfvars" "$@"
-    fi
-}
-
-tfv () {
-    workspace="$(terraform workspace show)"
-    if [ "$workspace" = "default" ] || [ ! -f "$workspace.tfvars" ]
-    then
-        terraform validate "$@"
-    else
-        terraform validate -var-file "$workspace.tfvars" "$@"
-    fi
-}
-
 toux () {
     touch "$@"
     chmod +x "$@"

Documents/bin/tf

+#!/bin/sh
+set -eu
+
+# A wrapper for Terraform to include a variables file is one exists that matches
+# the workspace name (on commands that support that).
+
+workspace="$(terraform workspace show)"
+if [ ! -f "$workspace.tfvars" ]
+then
+    exec terraform "$@"
+fi
+
+for arg in "$@"
+do
+    if [ "$arg" = "plan" ] || [ "$arg" = "console" ] || [ "$arg" = "import" ] ||
+        [ "$arg" = "refresh" ]
+    then
+        exec terraform "$@" "-var-file=$workspace.tfvars"
+    fi
+done
+exec terraform "$@"