working basic navigation and marks

1 files changed, 64 insertions, 0 deletions

diff --git a/mark.go b/mark.go
new file mode 100644
index 0000000..63284c5
--- /dev/null
+++ b/mark.go
@@ -0,0 +1,64 @@
+package main
+
+import (
+	"bytes"
+	"errors"
+	"fmt"
+	"strings"
+)
+
+var (
+	ErrInvalidURL = errors.New("that's not a valid URL")
+	ErrNotAMark   = errors.New("that's not a known mark name")
+)
+
+func MarkAdd(state *BrowserState, conf *Config, name, target string) error {
+	u, _, err := parseURL(target, state, conf.DefaultScheme)
+	if err != nil {
+		return ErrInvalidURL
+	}
+
+	state.Marks[name] = u.String()
+	return saveMarks(state.Marks)
+}
+
+func MarkGo(state *BrowserState, conf *Config, name string) error {
+	target, err := findMark(state, name)
+	if err != nil {
+		return err
+	}
+
+	return Go(state, target, conf)
+}
+
+func MarkList(state *BrowserState) error {
+	buf := &bytes.Buffer{}
+	for name, target := range state.Marks {
+		_, err := fmt.Fprintf(buf, "%s: %s\n", name, target)
+		if err != nil {
+			return err
+		}
+	}
+	state.Modal = buf.Bytes()
+	return Print(state)
+}
+
+func findMark(state *BrowserState, prefix string) (string, error) {
+	found := 0
+	value := ""
+	for name, target := range state.Marks {
+		if strings.HasPrefix(name, prefix) {
+			found += 1
+			value = target
+		}
+	}
+
+	switch found {
+	case 0:
+		return "", ErrNotAMark
+	case 1:
+		return value, nil
+	default:
+		return "", fmt.Errorf("too ambiguous - found %d matching marks", found)
+	}
+}