Add note links to the database

adapter/fzf/fzf.go

@@ -71,7 +71,7 @@ func New(opts Opts) (*Fzf, error) {
 		"--no-hscroll",
 		// Don't highlight search terms
 		"--color", "hl:-1,hl+:-1",
-		// "--preview-window", "noborder:wrap",
+		"--preview-window", "wrap",
 	}
 	if !opts.PreviewCmd.IsNull() {
 		args = append(args, "--preview", opts.PreviewCmd.String())

adapter/markdown/markdown.go

@@ -7,6 +7,7 @@ import (
 
 	"github.com/mickael-menu/zk/core/note"
 	"github.com/mickael-menu/zk/util/opt"
+	strutil "github.com/mickael-menu/zk/util/strings"
 	"github.com/yuin/goldmark"
 	meta "github.com/yuin/goldmark-meta"
 	"github.com/yuin/goldmark/ast"
@@ -127,12 +128,13 @@ func parseLinks(root ast.Node, source []byte) ([]note.Link, error) {
 
 	err := ast.Walk(root, func(n ast.Node, entering bool) (ast.WalkStatus, error) {
 		if link, ok := n.(*ast.Link); ok && entering {
-			target := string(link.Destination)
-			if target != "" {
+			href := string(link.Destination)
+			if href != "" {
 				links = append(links, note.Link{
-					Title:  string(link.Text(source)),
-					Target: target,
-					Rels:   strings.Fields(string(link.Title)),
+					Title:    string(link.Text(source)),
+					Href:     href,
+					Rels:     strings.Fields(string(link.Title)),
+					External: strutil.IsURL(href),
 				})
 			}
 		}

adapter/markdown/markdown_test.go

@@ -165,38 +165,52 @@ func TestParseLinks(t *testing.T) {
 	test(`
 # Heading with a [link](heading)
 
-Paragraph containing [multiple **links**](stripped-formatting) some [external like this one](http://example.com), and other [relative](../other).
+Paragraph containing [multiple **links**](stripped-formatting), here's one [relative](../other).
 A link can have [one relation](one "rel-1") or [several relations](several "rel-1 rel-2").
+
+[External links](http://example.com) are marked [as such](ftp://domain).
 `, []note.Link{
 		{
-			Title:  "link",
-			Target: "heading",
-			Rels:   []string{},
+			Title:    "link",
+			Href:     "heading",
+			Rels:     []string{},
+			External: false,
+		},
+		{
+			Title:    "multiple links",
+			Href:     "stripped-formatting",
+			Rels:     []string{},
+			External: false,
 		},
 		{
-			Title:  "multiple links",
-			Target: "stripped-formatting",
-			Rels:   []string{},
+			Title:    "relative",
+			Href:     "../other",
+			Rels:     []string{},
+			External: false,
 		},
 		{
-			Title:  "external like this one",
-			Target: "http://example.com",
-			Rels:   []string{},
+			Title:    "one relation",
+			Href:     "one",
+			Rels:     []string{"rel-1"},
+			External: false,
 		},
 		{
-			Title:  "relative",
-			Target: "../other",
-			Rels:   []string{},
+			Title:    "several relations",
+			Href:     "several",
+			Rels:     []string{"rel-1", "rel-2"},
+			External: false,
 		},
 		{
-			Title:  "one relation",
-			Target: "one",
-			Rels:   []string{"rel-1"},
+			Title:    "External links",
+			Href:     "http://example.com",
+			Rels:     []string{},
+			External: true,
 		},
 		{
-			Title:  "several relations",
-			Target: "several",
-			Rels:   []string{"rel-1", "rel-2"},
+			Title:    "as such",
+			Href:     "ftp://domain",
+			Rels:     []string{},
+			External: true,
 		},
 	})
 }

adapter/sqlite/db.go

@@ -23,10 +23,20 @@ func OpenInMemory() (*DB, error) {
 }
 
 func open(uri string) (*DB, error) {
+	wrap := errors.Wrapper("failed to open the database")
+
 	db, err := sql.Open("sqlite3", uri)
 	if err != nil {
-		return nil, errors.Wrap(err, "failed to open the database")
+		return nil, wrap(err)
 	}
+
+	// Make sure that CASCADE statements are properly applied by enabling
+	// foreign keys.
+	_, err = db.Exec("PRAGMA foreign_keys = ON")
+	if err != nil {
+		return nil, wrap(err)
+	}
+
 	return &DB{db}, nil
 }
 
@@ -47,6 +57,7 @@ func (db *DB) Migrate() error {
 
 		if version == 0 {
 			err = tx.ExecStmts([]string{
+				// Notes
 				`CREATE TABLE IF NOT EXISTS notes (
 					id INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL,
 					path TEXT NOT NULL,
@@ -63,6 +74,22 @@ func (db *DB) Migrate() error {
 				)`,
 				`CREATE INDEX IF NOT EXISTS index_notes_checksum ON notes (checksum)`,
 				`CREATE INDEX IF NOT EXISTS index_notes_path ON notes (path)`,
+
+				// Links
+				`CREATE TABLE IF NOT EXISTS links (
+					id INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL,
+					source_id INTEGER NOT NULL REFERENCES notes(id)
+						ON DELETE CASCADE,
+					target_id INTEGER REFERENCES notes(id)
+						ON DELETE SET NULL,
+					title TEXT DEFAULT('') NOT NULL,
+					href TEXT NOT NULL,
+					external INT DEFAULT(0) NOT NULL,
+					rels TEXT DEFAULT('') NOT NULL
+				)`,
+				`CREATE INDEX IF NOT EXISTS index_links_source_id_target_id ON links (source_id, target_id)`,
+
+				// FTS index
 				`CREATE VIRTUAL TABLE IF NOT EXISTS notes_fts USING fts5(
 					path, title, body,
 					content = notes,

adapter/sqlite/fixtures/default/links.yml

@@ -0,0 +1,27 @@
+- id: 1
+  source_id: 3
+  target_id: null
+  title: "Missing target"
+  href: "missing"
+  external: false
+
+- id: 2
+  source_id: 1
+  target_id: 2
+  title: "An internal link"
+  href: "log/2021-01-04.md"
+  external: false
+
+- id: 3
+  source_id: 1
+  target_id: null
+  title: "An external link"
+  href: "https://domain.com"
+  external: true
+
+- id: 4
+  source_id: 4
+  target_id: 1
+  title: "Another link"
+  href: "log/2021-01-03.md"
+  external: false

adapter/sqlite/note_dao.go

@@ -20,40 +20,84 @@ type NoteDAO struct {
 	logger util.Logger
 
 	// Prepared SQL statements
-	indexedStmt *LazyStmt
-	addStmt     *LazyStmt
-	updateStmt  *LazyStmt
-	removeStmt  *LazyStmt
-	existsStmt  *LazyStmt
+	indexedStmt            *LazyStmt
+	addStmt                *LazyStmt
+	updateStmt             *LazyStmt
+	removeStmt             *LazyStmt
+	findIdByPathStmt       *LazyStmt
+	findIdByPathPrefixStmt *LazyStmt
+	addLinkStmt            *LazyStmt
+	setLinksTargetStmt     *LazyStmt
+	removeLinksStmt        *LazyStmt
 }
 
+// NewNoteDAO creates a new instance of a DAO working on the given database
+// transaction.
 func NewNoteDAO(tx Transaction, logger util.Logger) *NoteDAO {
 	return &NoteDAO{
 		tx:     tx,
 		logger: logger,
+
+		// Get file info about all indexed notes.
 		indexedStmt: tx.PrepareLazy(`
 			SELECT path, modified from notes
 			 ORDER BY sortable_path ASC
 		`),
+
+		// Add a new note to the index.
 		addStmt: tx.PrepareLazy(`
 			INSERT INTO notes (path, sortable_path, title, lead, body, raw_content, word_count, checksum, created, modified)
 			VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
 		`),
+
+		// Update the content of a note.
 		updateStmt: tx.PrepareLazy(`
 			UPDATE notes
 			   SET title = ?, lead = ?, body = ?, raw_content = ?, word_count = ?, checksum = ?, modified = ?
 			 WHERE path = ?
 		`),
+
+		// Remove a note.
 		removeStmt: tx.PrepareLazy(`
 			DELETE FROM notes
+			 WHERE id = ?
+		`),
+
+		// Find a note ID from its exact path.
+		findIdByPathStmt: tx.PrepareLazy(`
+			SELECT id FROM notes
 			 WHERE path = ?
 		`),
-		existsStmt: tx.PrepareLazy(`
-			SELECT EXISTS (SELECT 1 FROM notes WHERE path = ?)
+
+		// Find a note ID from a prefix of its path.
+		findIdByPathPrefixStmt: tx.PrepareLazy(`
+			SELECT id FROM notes
+			 WHERE path LIKE ? || '%'
+		`),
+
+		// Add a new link.
+		addLinkStmt: tx.PrepareLazy(`
+			INSERT INTO links (source_id, target_id, title, href, external, rels)
+			VALUES (?, ?, ?, ?, ?, ?)
+		`),
+
+		// Set links matching a given href and missing a target ID to the given
+		// target ID.
+		setLinksTargetStmt: tx.PrepareLazy(`
+			UPDATE links
+			   SET target_id = ?
+			 WHERE target_id IS NULL AND external = 0 AND ? LIKE href || '%'
+		`),
+
+		// Remove all the outbound links of a note.
+		removeLinksStmt: tx.PrepareLazy(`
+			DELETE FROM links
+			 WHERE source_id = ?
 		`),
 	}
 }
 
+// Indexed returns file info of all indexed notes.
 func (d *NoteDAO) Indexed() (<-chan paths.Metadata, error) {
 	wrap := errors.Wrapper("failed to get indexed notes")
 
@@ -92,7 +136,10 @@ func (d *NoteDAO) Indexed() (<-chan paths.Metadata, error) {
 	return c, nil
 }
 
-func (d *NoteDAO) Add(note note.Metadata) error {
+// Add inserts a new note to the index.
+func (d *NoteDAO) Add(note note.Metadata) (int64, error) {
+	wrap := errors.Wrapperf("%v: can't add note to the index", note.Path)
+
 	// For sortable_path, we replace in path / by the shortest non printable
 	// character available to make it sortable. Without this, sorting by the
 	// path would be a lexicographical sort instead of being the same order
@@ -101,21 +148,32 @@ func (d *NoteDAO) Add(note note.Metadata) error {
 	// string.
 	sortablePath := strings.ReplaceAll(note.Path, "/", "\x01")
 
-	_, err := d.addStmt.Exec(
+	res, err := d.addStmt.Exec(
 		note.Path, sortablePath, note.Title, note.Lead, note.Body, note.RawContent, note.WordCount, note.Checksum,
 		note.Created, note.Modified,
 	)
-	return errors.Wrapf(err, "%v: can't add note to the index", note.Path)
+	if err != nil {
+		return 0, wrap(err)
+	}
+
+	id, err := res.LastInsertId()
+	if err != nil {
+		return 0, wrap(err)
+	}
+
+	err = d.addLinks(id, note)
+	return id, err
 }
 
+// Update modifies an existing note.
 func (d *NoteDAO) Update(note note.Metadata) error {
 	wrap := errors.Wrapperf("%v: failed to update note index", note.Path)
 
-	exists, err := d.exists(note.Path)
+	id, err := d.findIdByPath(note.Path)
 	if err != nil {
 		return wrap(err)
 	}
-	if !exists {
+	if !id.Valid {
 		return wrap(errors.New("note not found in the index"))
 	}
 
@@ -123,37 +181,94 @@ func (d *NoteDAO) Update(note note.Metadata) error {
 		note.Title, note.Lead, note.Body, note.RawContent, note.WordCount, note.Checksum, note.Modified,
 		note.Path,
 	)
-	return errors.Wrapf(err, "%v: failed to update note index", note.Path)
+	if err != nil {
+		return wrap(err)
+	}
+
+	_, err = d.removeLinksStmt.Exec(id.Int64)
+	if err != nil {
+		return wrap(err)
+	}
+
+	err = d.addLinks(id.Int64, note)
+	return wrap(err)
+}
+
+// addLinks inserts all the outbound links of the given note.
+func (d *NoteDAO) addLinks(id int64, note note.Metadata) error {
+	for _, link := range note.Links {
+		targetId, err := d.findIdByPathPrefix(link.Href)
+		if err != nil {
+			return err
+		}
+
+		_, err = d.addLinkStmt.Exec(id, targetId, link.Title, link.Href, link.External, joinLinkRels(link.Rels))
+		if err != nil {
+			return err
+		}
+	}
+
+	_, err := d.setLinksTargetStmt.Exec(id, note.Path)
+	return err
+}
+
+// joinLinkRels will concatenate a list of rels into a SQLite ready string.
+// Each rel is delimited by \x01 for easy matching in queries.
+func joinLinkRels(rels []string) string {
+	if len(rels) == 0 {
+		return ""
+	}
+	delimiter := "\x01"
+	return delimiter + strings.Join(rels, delimiter) + delimiter
 }
 
+// Remove deletes the note with the given path from the index.
 func (d *NoteDAO) Remove(path string) error {
 	wrap := errors.Wrapperf("%v: failed to remove note index", path)
 
-	exists, err := d.exists(path)
+	id, err := d.findIdByPath(path)
 	if err != nil {
 		return wrap(err)
 	}
-	if !exists {
+	if !id.Valid {
 		return wrap(errors.New("note not found in the index"))
 	}
 
-	_, err = d.removeStmt.Exec(path)
+	_, err = d.removeStmt.Exec(id)
 	return wrap(err)
 }
 
-func (d *NoteDAO) exists(path string) (bool, error) {
-	row, err := d.existsStmt.QueryRow(path)
+func (d *NoteDAO) findIdByPath(path string) (sql.NullInt64, error) {
+	row, err := d.findIdByPathStmt.QueryRow(path)
 	if err != nil {
-		return false, err
+		return sql.NullInt64{}, err
 	}
-	var exists bool
-	row.Scan(&exists)
+	return idForRow(row)
+}
+
+func (d *NoteDAO) findIdByPathPrefix(path string) (sql.NullInt64, error) {
+	row, err := d.findIdByPathPrefixStmt.QueryRow(path)
 	if err != nil {
-		return false, err
+		return sql.NullInt64{}, err
+	}
+	return idForRow(row)
+}
+
+func idForRow(row *sql.Row) (sql.NullInt64, error) {
+	var id sql.NullInt64
+	err := row.Scan(&id)
+
+	switch {
+	case err == sql.ErrNoRows:
+		return id, nil
+	case err != nil:
+		return id, err
+	default:
+		return id, err
 	}
-	return exists, nil
 }
 
+// Find returns all the notes matching the given criteria.
 func (d *NoteDAO) Find(opts note.FinderOpts) ([]note.Match, error) {
 	matches := make([]note.Match, 0)
 

adapter/sqlite/note_dao_test.go

@@ -1,6 +1,7 @@
 package sqlite
 
 import (
+	"database/sql"
 	"fmt"
 	"testing"
 	"time"
@@ -47,7 +48,8 @@ func TestNoteDAOIndexed(t *testing.T) {
 				Modified: time.Date(2019, 11, 12, 20, 34, 6, 0, time.UTC),
 			},
 		} {
-			assert.Nil(t, dao.Add(note))
+			_, err := dao.Add(note)
+			assert.Nil(t, err)
 		}
 
 		// We check that the metadata are sorted by the path but not
@@ -101,7 +103,7 @@ func TestNoteDAOIndexed(t *testing.T) {
 
 func TestNoteDAOAdd(t *testing.T) {
 	testNoteDAO(t, func(tx Transaction, dao *NoteDAO) {
-		err := dao.Add(note.Metadata{
+		_, err := dao.Add(note.Metadata{
 			Path:       "log/added.md",
 			Title:      "Added note",
 			Lead:       "Note",
@@ -130,10 +132,103 @@ func TestNoteDAOAdd(t *testing.T) {
 	})
 }
 
+func TestNoteDAOAddWithLinks(t *testing.T) {
+	testNoteDAO(t, func(tx Transaction, dao *NoteDAO) {
+		id, err := dao.Add(note.Metadata{
+			Path: "log/added.md",
+			Links: []note.Link{
+				{
+					Title: "Same dir",
+					Href:  "log/2021-01-04",
+					Rels:  []string{"rel-1", "rel-2"},
+				},
+				{
+					Title: "Relative",
+					Href:  "f39c8",
+				},
+				{
+					Title: "Second is added",
+					Href:  "f39c8",
+					Rels:  []string{"second"},
+				},
+				{
+					Title: "Unknown",
+					Href:  "unknown",
+				},
+				{
+					Title:    "URL",
+					Href:     "http://example.com",
+					External: true,
+				},
+			},
+		})
+		assert.Nil(t, err)
+
+		rows := queryLinkRows(t, tx, fmt.Sprintf("source_id = %d", id))
+		assert.Equal(t, rows, []linkRow{
+			{
+				SourceId: id,
+				TargetId: intPointer(2),
+				Title:    "Same dir",
+				Href:     "log/2021-01-04",
+				Rels:     "\x01rel-1\x01rel-2\x01",
+			},
+			{
+				SourceId: id,
+				TargetId: intPointer(4),
+				Title:    "Relative",
+				Href:     "f39c8",
+				Rels:     "",
+			},
+			{
+				SourceId: id,
+				TargetId: intPointer(4),
+				Title:    "Second is added",
+				Href:     "f39c8",
+				Rels:     "\x01second\x01",
+			},
+			{
+				SourceId: id,
+				TargetId: nil,
+				Title:    "Unknown",
+				Href:     "unknown",
+				Rels:     "",
+			},
+			{
+				SourceId: id,
+				TargetId: nil,
+				Title:    "URL",
+				Href:     "http://example.com",
+				External: true,
+				Rels:     "",
+			},
+		})
+	})
+}
+
+func TestNoteDAOAddFillsLinksMissingTargetId(t *testing.T) {
+	testNoteDAO(t, func(tx Transaction, dao *NoteDAO) {
+		id, err := dao.Add(note.Metadata{
+			Path: "missing_target.md",
+		})
+		assert.Nil(t, err)
+
+		rows := queryLinkRows(t, tx, fmt.Sprintf("target_id = %d", id))
+		assert.Equal(t, rows, []linkRow{
+			{
+				SourceId: 3,
+				TargetId: &id,
+				Title:    "Missing target",
+				Href:     "missing",
+			},
+		})
+	})
+}
+
 // Check that we can't add a duplicate note with an existing path.
 func TestNoteDAOAddExistingNote(t *testing.T) {
 	testNoteDAO(t, func(tx Transaction, dao *NoteDAO) {
-		err := dao.Add(note.Metadata{Path: "ref/test/a.md"})
+		_, err := dao.Add(note.Metadata{Path: "ref/test/a.md"})
 		assert.Err(t, err, "ref/test/a.md: can't add note to the index: UNIQUE constraint failed: notes.path")
 	})
 }
@@ -178,10 +273,73 @@ func TestNoteDAOUpdateUnknown(t *testing.T) {
 	})
 }
 
+func TestNoteDAOUpdateWithLinks(t *testing.T) {
+	testNoteDAO(t, func(tx Transaction, dao *NoteDAO) {
+		links := queryLinkRows(t, tx, "source_id = 1")
+		assert.Equal(t, links, []linkRow{
+			{
+				SourceId: 1,
+				TargetId: intPointer(2),
+				Title:    "An internal link",
+				Href:     "log/2021-01-04.md",
+			},
+			{
+				SourceId: 1,
+				TargetId: nil,
+				Title:    "An external link",
+				Href:     "https://domain.com",
+				External: true,
+			},
+		})
+
+		err := dao.Update(note.Metadata{
+			Path: "log/2021-01-03.md",
+			Links: []note.Link{
+				{
+					Title:    "A new link",
+					Href:     "index",
+					External: false,
+					Rels:     []string{"rel"},
+				},
+				{
+					Title:    "An external link",
+					Href:     "https://domain.com",
+					External: true,
+				},
+			},
+		})
+		assert.Nil(t, err)
+
+		links = queryLinkRows(t, tx, "source_id = 1")
+		assert.Equal(t, links, []linkRow{
+			{
+				SourceId: 1,
+				TargetId: intPointer(3),
+				Title:    "A new link",
+				Href:     "index",
+				Rels:     "\x01rel\x01",
+			},
+			{
+				SourceId: 1,
+				TargetId: nil,
+				Title:    "An external link",
+				Href:     "https://domain.com",
+				External: true,
+			},
+		})
+	})
+}
+
 func TestNoteDAORemove(t *testing.T) {
 	testNoteDAO(t, func(tx Transaction, dao *NoteDAO) {
-		err := dao.Remove("ref/test/a.md")
+		_, err := queryNoteRow(tx, `path = "ref/test/a.md"`)
+		assert.Nil(t, err)
+
+		err = dao.Remove("ref/test/a.md")
 		assert.Nil(t, err)
+
+		_, err = queryNoteRow(tx, `path = "ref/test/a.md"`)
+		assert.Equal(t, err, sql.ErrNoRows)
 	})
 }
 
@@ -192,6 +350,26 @@ func TestNoteDAORemoveUnknown(t *testing.T) {
 	})
 }
 
+// Also remove the outbound links, and set the target_id of inbound links to NULL.
+func TestNoteDAORemoveCascadeLinks(t *testing.T) {
+	testNoteDAO(t, func(tx Transaction, dao *NoteDAO) {
+		links := queryLinkRows(t, tx, `source_id = 1`)
+		assert.Equal(t, len(links) > 0, true)
+
+		links = queryLinkRows(t, tx, `id = 4`)
+		assert.Equal(t, *links[0].TargetId, int64(1))
+
+		err := dao.Remove("log/2021-01-03.md")
+		assert.Nil(t, err)
+
+		links = queryLinkRows(t, tx, `source_id = 1`)
+		assert.Equal(t, len(links), 0)
+
+		links = queryLinkRows(t, tx, `id = 4`)
+		assert.Nil(t, links[0].TargetId)
+	})
+}
+
 func TestNoteDAOFindAll(t *testing.T) {
 	testNoteDAOFindPaths(t, note.FinderOpts{}, []string{
 		"ref/test/b.md",
@@ -515,3 +693,37 @@ func queryNoteRow(tx Transaction, where string) (noteRow, error) {
 	`, where)).Scan(&row.Path, &row.Title, &row.Lead, &row.Body, &row.RawContent, &row.WordCount, &row.Checksum, &row.Created, &row.Modified)
 	return row, err
 }
+
+type linkRow struct {
+	SourceId          int64
+	TargetId          *int64
+	Href, Title, Rels string
+	External          bool
+}
+
+func queryLinkRows(t *testing.T, tx Transaction, where string) []linkRow {
+	links := make([]linkRow, 0)
+
+	rows, err := tx.Query(fmt.Sprintf(`
+		SELECT source_id, target_id, title, href, external, rels
+		  FROM links
+		 WHERE %v
+		 ORDER BY id
+	`, where))
+	assert.Nil(t, err)
+
+	for rows.Next() {
+		var row linkRow
+		err = rows.Scan(&row.SourceId, &row.TargetId, &row.Title, &row.Href, &row.External, &row.Rels)
+		assert.Nil(t, err)
+		links = append(links, row)
+	}
+	rows.Close()
+	assert.Nil(t, rows.Err())
+
+	return links
+}
+
+func intPointer(i int64) *int64 {
+	return &i
+}

cmd/index.go

@@ -13,9 +13,8 @@ import (
 
 // Index indexes the content of all the notes in the slip box.
 type Index struct {
-	Directory string `arg optional type:"path" default:"." help:"Directory containing the notes to index"`
-	Force     bool   `help:"Force indexing all the notes" short:"f"`
-	Quiet     bool   `help:"Do not print statistics nor progress" short:"q"`
+	Force bool `help:"Force indexing all the notes" short:"f"`
+	Quiet bool `help:"Do not print statistics nor progress" short:"q"`
 }
 
 func (cmd *Index) Run(container *Container) error {
@@ -24,48 +23,35 @@ func (cmd *Index) Run(container *Container) error {
 		return err
 	}
 
-	dir, err := zk.RequireDirAt(cmd.Directory)
-	if err != nil {
-		return err
-	}
-
 	db, err := container.Database(zk.DBPath())
 	if err != nil {
 		return err
 	}
 
-	var bar *progressbar.ProgressBar
-	if !cmd.Quiet {
-		bar = progressbar.NewOptions(-1,
-			progressbar.OptionSetWriter(os.Stderr),
-			progressbar.OptionThrottle(100*time.Millisecond),
-			progressbar.OptionSpinnerType(14),
-		)
-	}
+	var bar = progressbar.NewOptions(-1,
+		progressbar.OptionSetWriter(os.Stderr),
+		progressbar.OptionThrottle(100*time.Millisecond),
+		progressbar.OptionSpinnerType(14),
+	)
 
 	var stats note.IndexingStats
 	err = db.WithTransaction(func(tx sqlite.Transaction) error {
 		notes := sqlite.NewNoteDAO(tx, container.Logger)
 
 		stats, err = note.Index(
-			*dir,
+			zk,
 			cmd.Force,
 			container.Parser(),
 			notes,
 			container.Logger,
 			func(change paths.DiffChange) {
-				if bar != nil {
-					bar.Add(1)
-					bar.Describe(change.String())
-				}
+				bar.Add(1)
+				bar.Describe(change.String())
 			},
 		)
 		return err
 	})
-
-	if bar != nil {
-		bar.Clear()
-	}
+	bar.Clear()
 
 	if err == nil && !cmd.Quiet {
 		fmt.Println(stats)

cmd/list.go

@@ -16,6 +16,7 @@ import (
 type List struct {
 	Format    string `help:"Pretty prints the list using the given format" short:"f" placeholder:"<template>"`
 	NoPager   bool   `help:"Do not pipe zk output into a pager" short:"P"`
+	Quiet     bool   `help:"Don't show anything besides the notes themselves" short:"q"`
 	Filtering `embed`
 	Sorting   `embed`
 }
@@ -74,7 +75,7 @@ func (cmd *List) Run(container *Container) error {
 		})
 	}
 
-	if err == nil {
+	if err == nil && !cmd.Quiet {
 		fmt.Printf("\nFound %d %s\n", count, strings.Pluralize("note", count))
 	}
 

core/note/index.go

@@ -24,6 +24,7 @@ type Metadata struct {
 	Body       string
 	RawContent string
 	WordCount  int
+	Links      []Link
 	Created    time.Time
 	Modified   time.Time
 	Checksum   string
@@ -56,21 +57,21 @@ type Indexer interface {
 	// Indexed returns the list of indexed note file metadata.
 	Indexed() (<-chan paths.Metadata, error)
 	// Add indexes a new note from its metadata.
-	Add(metadata Metadata) error
+	Add(metadata Metadata) (int64, error)
 	// Update updates the metadata of an already indexed note.
 	Update(metadata Metadata) error
 	// Remove deletes a note from the index.
 	Remove(path string) error
 }
 
-// Index indexes the content of the notes in the given directory.
-func Index(dir zk.Dir, force bool, parser Parser, indexer Indexer, logger util.Logger, callback func(change paths.DiffChange)) (IndexingStats, error) {
+// Index indexes the content of the notes in the given slip box.
+func Index(zk *zk.Zk, force bool, parser Parser, indexer Indexer, logger util.Logger, callback func(change paths.DiffChange)) (IndexingStats, error) {
 	wrap := errors.Wrapper("indexing failed")
 
 	stats := IndexingStats{}
 	startTime := time.Now()
 
-	source := paths.Walk(dir.Path, dir.Config.Extension, logger)
+	source := paths.Walk(zk.Path, zk.Config.Extension, logger)
 	target, err := indexer.Indexed()
 	if err != nil {
 		return stats, wrap(err)
@@ -82,15 +83,15 @@ func Index(dir zk.Dir, force bool, parser Parser, indexer Indexer, logger util.L
 		switch change.Kind {
 		case paths.DiffAdded:
 			stats.AddedCount += 1
-			metadata, err := metadata(change.Path, dir.Path, parser)
+			metadata, err := metadata(change.Path, zk, parser)
 			if err == nil {
-				err = indexer.Add(metadata)
+				_, err = indexer.Add(metadata)
 			}
 			logger.Err(err)
 
 		case paths.DiffModified:
 			stats.ModifiedCount += 1
-			metadata, err := metadata(change.Path, dir.Path, parser)
+			metadata, err := metadata(change.Path, zk, parser)
 			if err == nil {
 				err = indexer.Update(metadata)
 			}
@@ -111,12 +112,13 @@ func Index(dir zk.Dir, force bool, parser Parser, indexer Indexer, logger util.L
 }
 
 // metadata retrieves note metadata for the given file.
-func metadata(path string, basePath string, parser Parser) (Metadata, error) {
+func metadata(path string, zk *zk.Zk, parser Parser) (Metadata, error) {
 	metadata := Metadata{
-		Path: path,
+		Path:  path,
+		Links: make([]Link, 0),
 	}
 
-	absPath := filepath.Join(basePath, path)
+	absPath := filepath.Join(zk.Path, path)
 	content, err := ioutil.ReadFile(absPath)
 	if err != nil {
 		return metadata, err
@@ -131,8 +133,21 @@ func metadata(path string, basePath string, parser Parser) (Metadata, error) {
 	metadata.Body = contentParts.Body.String()
 	metadata.RawContent = contentStr
 	metadata.WordCount = len(strings.Fields(contentStr))
+	metadata.Links = make([]Link, 0)
 	metadata.Checksum = fmt.Sprintf("%x", sha256.Sum256(content))
 
+	for _, link := range contentParts.Links {
+		if !strutil.IsURL(link.Href) {
+			// Make the href relative to the slip box root.
+			href := filepath.Join(filepath.Dir(absPath), link.Href)
+			link.Href, err = zk.RelPath(href)
+			if err != nil {
+				return metadata, err
+			}
+		}
+		metadata.Links = append(metadata.Links, link)
+	}
+
 	times, err := times.Stat(absPath)
 	if err != nil {
 		return metadata, err

core/note/parse.go

@@ -16,9 +16,10 @@ type Content struct {
 }
 
 type Link struct {
-	Title  string
-	Target string
-	Rels   []string
+	Title    string
+	Href     string
+	External bool
+	Rels     []string
 }
 
 type Parser interface {

main.go

@@ -63,7 +63,9 @@ func fatalIfError(err error) {
 
 // indexZk will index any slip box in the working directory.
 func indexZk(container *cmd.Container) {
-	(&cmd.Index{Quiet: true}).Run(container)
+	if len(os.Args) > 1 && os.Args[1] != "index" {
+		(&cmd.Index{Quiet: true}).Run(container)
+	}
 }
 
 // runAlias will execute a user alias if the command is one of them.

util/strings/strings.go

@@ -2,6 +2,7 @@ package strings
 
 import (
 	"bufio"
+	"net/url"
 	"strings"
 )
 
@@ -45,3 +46,18 @@ func SplitLines(s string) []string {
 func JoinLines(s string) string {
 	return strings.Join(SplitLines(s), " ")
 }
+
+// IsURL returns whether the given string is a valid URL.
+func IsURL(s string) bool {
+	_, err := url.ParseRequestURI(s)
+	if err != nil {
+		return false
+	}
+
+	u, err := url.Parse(s)
+	if err != nil || u.Scheme == "" || u.Host == "" {
+		return false
+	}
+
+	return true
+}

util/strings/strings_test.go

@@ -55,3 +55,17 @@ func TestJoinLines(t *testing.T) {
 	test("One line\nTwo lines\n\nThree lines", "One line Two lines  Three lines")
 	test("One line\nTwo lines\n Three lines", "One line Two lines  Three lines")
 }
+
+func TestIsURL(t *testing.T) {
+	test := func(text string, expected bool) {
+		assert.Equal(t, IsURL(text), expected)
+	}
+
+	test("", false)
+	test("example.com/", false)
+	test("path", false)
+	test("http://example.com", true)
+	test("https://example.com/dir", true)
+	test("http://example.com/dir", true)
+	test("ftp://example.com/", true)
+}