From 6406b70077b47a2d2cc1815244639523f610dd7f Mon Sep 17 00:00:00 2001
From: Sasha Koshka <sashakoshka@tebibyte.media>
Date: Thu, 30 Mar 2023 21:33:49 -0400
Subject: [PATCH] Add cut capability to textmanip

---
 go.sum                 |  8 --------
 textmanip/textmanip.go | 25 +++++++++++++++++++++++++
 2 files changed, 25 insertions(+), 8 deletions(-)

diff --git a/go.sum b/go.sum
index 6cf2167..28b6771 100644
--- a/go.sum
+++ b/go.sum
@@ -1,9 +1,3 @@
-git.tebibyte.media/sashakoshka/ezprof v0.0.0-20230309011813-4cd4374e3830 h1:McIAkTzD4y0tS7YprTOwRu8a8NTsMKtomQnvxnCdOmg=
-git.tebibyte.media/sashakoshka/ezprof v0.0.0-20230309011813-4cd4374e3830/go.mod h1:cpXX8SAUDEvZX5m7scoyruavUhEqQ1SByfWzPFHkTbg=
-git.tebibyte.media/sashakoshka/ezprof v0.0.0-20230309013013-f7ee80c8f908 h1:kFdch6JQ/gWESn/vLeKzImzf3Xx1it2MkZqBwrSnR1Q=
-git.tebibyte.media/sashakoshka/ezprof v0.0.0-20230309013013-f7ee80c8f908/go.mod h1:cpXX8SAUDEvZX5m7scoyruavUhEqQ1SByfWzPFHkTbg=
-git.tebibyte.media/sashakoshka/ezprof v0.0.0-20230309013201-fc0de8121523 h1:1KaoiGetWYIDQKts6yas1hW+4ObkuTm6+TkFpl6jZxg=
-git.tebibyte.media/sashakoshka/ezprof v0.0.0-20230309013201-fc0de8121523/go.mod h1:cpXX8SAUDEvZX5m7scoyruavUhEqQ1SByfWzPFHkTbg=
 git.tebibyte.media/sashakoshka/ezprof v0.0.0-20230309044548-401cba83602b h1:vPFKR7vjN1VrMdMtpATMrKQobz/cqbPiRrA1EbtG6PM=
 git.tebibyte.media/sashakoshka/ezprof v0.0.0-20230309044548-401cba83602b/go.mod h1:cpXX8SAUDEvZX5m7scoyruavUhEqQ1SByfWzPFHkTbg=
 github.com/BurntSushi/freetype-go v0.0.0-20160129220410-b763ddbfe298 h1:1qlsVAQJXZHsaM8b6OLVo6muQUQd4CwkH/D3fnnbHXA=
@@ -27,8 +21,6 @@ github.com/icza/bitio v1.0.0/go.mod h1:0jGnlLAx8MKMr9VGnn/4YrvZiprkvBelsVIbA9Jjr
 github.com/icza/mighty v0.0.0-20180919140131-cfd07d671de6/go.mod h1:xQig96I1VNBDIWGCdTt54nHt6EeI639SmHycLYL7FkA=
 github.com/jezek/xgb v1.1.0 h1:wnpxJzP1+rkbGclEkmwpVFQWpuE2PUGNUzP8SbfFobk=
 github.com/jezek/xgb v1.1.0/go.mod h1:nrhwO0FX/enq75I7Y7G8iN1ubpSGZEiA3v9e9GyRFlk=
-github.com/jezek/xgbutil v0.0.0-20210302171758-530099784e66 h1:+wPhoJD8EH0/bXipIq8Lc2z477jfox9zkXPCJdhvHj8=
-github.com/jezek/xgbutil v0.0.0-20210302171758-530099784e66/go.mod h1:KACeV+k6b+aoLTVrrurywEbu3UpqoQcQywj4qX8aQKM=
 github.com/jfreymuth/oggvorbis v1.0.1/go.mod h1:NqS+K+UXKje0FUYUPosyQ+XTVvjmVjps1aEZH1sumIk=
 github.com/jfreymuth/vorbis v1.0.0/go.mod h1:8zy3lUAm9K/rJJk223RKy6vjCZTWC61NA2QD06bfOE0=
 github.com/lucasb-eyer/go-colorful v1.0.2/go.mod h1:0MS4r+7BZKSJ5mw4/S5MPN+qHFF1fYclkSPilDOKW0s=
diff --git a/textmanip/textmanip.go b/textmanip/textmanip.go
index e86d6b7..5f2d181 100644
--- a/textmanip/textmanip.go
+++ b/textmanip/textmanip.go
@@ -42,6 +42,15 @@ func (dot Dot) Constrain (length int) Dot {
 	return dot
 }
 
+func (dot Dot) Width () int {
+	dot = dot.Canon()
+	return dot.End - dot.Start
+}
+
+func (dot Dot) Slice (text []rune) []rune {
+	return text[dot.Start:dot.End]
+}
+
 func WordToLeft (text []rune, position int) (length int) {
 	if position < 1 { return }
 	if position > len(text) { position = len(text) }
@@ -121,6 +130,22 @@ func Delete (text []rune, dot Dot, word bool) (result []rune, moved Dot) {
 	}
 }
 
+func Lift (text []rune, dot Dot) (result []rune, moved Dot, lifted []rune) {
+	dot = dot.Constrain(len(text))
+	if dot.Empty() {
+		moved = dot
+		return
+	}
+
+	dot = dot.Canon()
+	lifted = make([]rune, dot.Width())
+	copy(lifted, dot.Slice(text))
+	result = append(result, text[:dot.Start]...)
+	result = append(result, text[dot.End:]...)
+	moved = EmptyDot(dot.Start)
+	return
+}
+
 func Type (text []rune, dot Dot, character rune) (result []rune, moved Dot) {
 	dot = dot.Constrain(len(text))
 	if dot.Empty() {