Add initial comp.File completer

comp/files.go

@@ -0,0 +1,28 @@
+// Copyright 2022 Robert S. Muhlestein.
+// SPDX-License-Identifier: Apache-2.0
+
+package comp
+
+import (
+	"github.com/rwxrob/bonzai/filter"
+	"github.com/rwxrob/bonzai/util"
+)
+
+// Files returns all file names for the directory and file prefix
+// passed. If nothing is passed assumes the current working directory.
+func Files(x Command, args ...string) []string {
+	match := ""
+
+	if args != nil && len(args) > 0 {
+		match = args[0]
+	}
+
+	list := []string{}
+
+	// TODO if file separators detected, drill down to the proper
+	// directory then check the leaf as the prefix of files
+
+	list = append(list, util.Files(match)...)
+
+	return filter.HasPrefix(list, match)
+}

comp/files_test.go

@@ -0,0 +1,19 @@
+// Copyright 2022 Robert S. Muhlestein.
+// SPDX-License-Identifier: Apache-2.0
+
+package comp_test
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/rwxrob/bonzai/comp"
+)
+
+func ExampleFiles() {
+	os.Chdir("testdata/files")
+	defer os.Chdir("../..")
+	fmt.Println(comp.Files(nil))
+	//Output:
+	// [bar blah come foo other]
+}