~eliasnaur/gio

5c84cf7e90211fa12eab08590c79a3d64daedbe9 — Chris Waldon 6 months ago 4f5a6b3 
widget: do not allow invalid utf8 in editor

This commit replaces invalid UTF8 codepoints with the replacement character
when they are inserted into the editor. This ensures that the editor never
moves the editing gap to an invalid location and reads its contents.

Signed-off-by: Chris Waldon <christopher.waldon.dev@gmail.com>
patch browse .tar.gz 
1 files changed, 6 insertions(+), 0 deletions(-)

M widget/buffer.go

M widget/buffer.go => widget/buffer.go +6 -0
@@ 6,6 6,8 @@ import (
	"io"
	"strings"
	"unicode/utf8"

	"golang.org/x/text/runes"
)

// editBuffer implements a gap buffer for text editing.


@@ 162,6 164,10 @@ func (e *editBuffer) String() string {
}

func (e *editBuffer) prepend(caret int, s string) {
	if !utf8.ValidString(s) {
		s = runes.ReplaceIllFormed().String(s)
	}

	e.moveGap(caret, len(s))
	copy(e.text[caret:], s)
	e.gapstart += len(s)