commands: execute commands with templates

Execute template code before running a command.

With this, we can use templates in our keybinds like:

[messages]
E = :'{{if match (.Flags|join "") "O"}}envelope{{else}}view{{end}}'<Enter>

Signed-off-by: Koni Marti <koni.marti@gmail.com>
Acked-by: Robin Jarry <robin@jarry.cc>

1 files changed, 54 insertions, 0 deletions

diff --git a/commands/commands_test.go b/commands/commands_test.go
new file mode 100644
index 00000000..a424d16d
--- /dev/null
+++ b/commands/commands_test.go
@@ -0,0 +1,54 @@
+package commands
+
+import (
+	"reflect"
+	"testing"
+
+	"git.sr.ht/~rjarry/aerc/lib/state"
+)
+
+func TestExecuteCommand_expand(t *testing.T) {
+	tests := []struct {
+		args []string
+		want []string
+	}{
+		{
+			args: []string{"prompt", "Really quit? ", "quit"},
+			want: []string{"prompt", "Really quit? ", "quit"},
+		},
+		{
+			args: []string{"{{", "print", "\"hello\"", "}}"},
+			want: []string{"hello"},
+		},
+		{
+			args: []string{"prompt", "Really quit  ? ", "  quit "},
+			want: []string{"prompt", "Really quit  ? ", "  quit "},
+		},
+		{
+			args: []string{
+				"prompt", "Really quit? ", "{{",
+				"print", "\"quit\"", "}}",
+			},
+			want: []string{"prompt", "Really quit? ", "quit"},
+		},
+		{
+			args: []string{
+				"prompt", "Really quit? ", "{{",
+				"if", "1", "}}", "quit", "{{end}}",
+			},
+			want: []string{"prompt", "Really quit? ", "quit"},
+		},
+	}
+
+	data := state.TemplateData{}
+
+	for i, test := range tests {
+		got, err := expand(&data, test.args)
+		if err != nil {
+			t.Errorf("test %d failed with err: %v", i, err)
+		} else if !reflect.DeepEqual(got, test.want) {
+			t.Errorf("test %d failed: "+
+				"got: %v, but want: %v", i, got, test.want)
+		}
+	}
+}