Remove FrontMatter

After giving it some thought I don't think this belongs in go-org - there's
just no use for it outside of hugo front matter handling

org/document.go

@@ -32,7 +32,6 @@ type Writer interface {
 }
 
 type Node interface{}
-type FrontMatter = map[string]interface{}
 
 type lexFn = func(line string) (t token, ok bool)
 type parseFn = func(*Document, int, stopFn) (int, Node)
@@ -60,16 +59,6 @@ var lexFns = []lexFn{
 
 var nilToken = token{"nil", -1, "", nil}
 
-func FrontMatterHandler(fm FrontMatter, k, v string) error {
-	switch k := strings.ToLower(k); k {
-	case "tags", "categories", "aliases":
-		fm[k] = strings.Fields(v)
-	default:
-		fm[k] = v
-	}
-	return nil
-}
-
 func NewDocument() *Document {
 	outlineSection := &Section{}
 	return &Document{
@@ -134,31 +123,6 @@ func (d *Document) Silent() *Document {
 	return d
 }
 
-func GetFrontMatter(input io.Reader, f func(FrontMatter, string, string) error) (_ FrontMatter, err error) {
-	d := NewDocument()
-	defer func() {
-		if recovered := recover(); recovered != nil {
-			err = fmt.Errorf("could not parse input: %s", recovered)
-		}
-	}()
-	d.tokenize(input)
-	d.parseMany(0, func(d *Document, i int) bool {
-		if !(i < len(d.tokens)) {
-			return true
-		}
-		t := d.tokens[i]
-		return t.kind != "keyword" && !(t.kind == "text" && t.content == "")
-	})
-	frontMatter := make(FrontMatter, len(d.BufferSettings))
-	for k, v := range d.BufferSettings {
-		err := f(frontMatter, k, v)
-		if err != nil {
-			return nil, err
-		}
-	}
-	return frontMatter, err
-}
-
 func (d *Document) tokenize(input io.Reader) {
 	d.tokens = []token{}
 	scanner := bufio.NewScanner(input)

org/document_test.go

@@ -1,83 +0,0 @@
-package org
-
-import (
-	"reflect"
-	"strings"
-	"testing"
-)
-
-type frontMatterTest struct {
-	name     string
-	input    string
-	handler  func(FrontMatter, string, string) error
-	expected map[string]interface{}
-}
-
-var frontMatterTests = []frontMatterTest{
-	{`basic`,
-		`#+TITLE: The Title`,
-		FrontMatterHandler,
-		map[string]interface{}{"title": "The Title"}},
-	{`empty`,
-		`* No frontmatter here`,
-		FrontMatterHandler,
-		map[string]interface{}{}},
-	{`custom handler`,
-		`
-        #+TITLE: The Title
-
-        #+TAGS: foo bar
-
-        `,
-		func(fm FrontMatter, k, v string) error {
-			switch k := strings.ToLower(k); k {
-			case "title":
-				fm[k] = "Thanks For All The Fish"
-				return nil
-			default:
-				return FrontMatterHandler(fm, k, v)
-			}
-		},
-		map[string]interface{}{
-			"title": "Thanks For All The Fish",
-			"tags":  []string{"foo", "bar"},
-		}},
-	{`multiple + ignored keyword`,
-		`
-         #+TITLE: The Title
-         #+AUTHOR: The Author
-
-         #+OTHER: some other keyword
-         #+TAGS: this will become []string
-
-         #+ALIASES: foo bar
-         #+ALIASES: baz bam
-         #+categories: foo bar
-
-         something that's not a keyword or a text line without content
-
-         #+SUBTITLE: The Subtitle`,
-		FrontMatterHandler,
-		map[string]interface{}{
-			"title":      "The Title",
-			"author":     "The Author",
-			"other":      "some other keyword",
-			"tags":       []string{"this", "will", "become", "[]string"},
-			"aliases":    []string{"foo", "bar", "baz", "bam"},
-			"categories": []string{"foo", "bar"},
-		},
-	},
-}
-
-func TestParseFrontMatter(t *testing.T) {
-	for _, test := range frontMatterTests {
-		actual, err := GetFrontMatter(strings.NewReader(test.input), test.handler)
-		if err != nil {
-			t.Errorf("%s\n got error: %s", test.name, err)
-			continue
-		}
-		if !reflect.DeepEqual(test.expected, actual) {
-			t.Errorf("%s\n got: %#v\nexpected: %#v\n%s'", test.name, actual, test.expected, test.input)
-		}
-	}
-}