From 4dc53b522d1c24feac84954f35b5d412a40cd77b Mon Sep 17 00:00:00 2001
From: Norman Meier <norman@samourai.coop>
Date: Wed, 10 Apr 2024 19:56:02 +0200
Subject: [PATCH] chore: remove duplicate utf16

Signed-off-by: Norman Meier <norman@samourai.coop>
---
 .../gno.land/p/demo/teritori/ujson/gno.mod    |   1 -
 .../p/demo/teritori/ujson/strings.gno         |   3 +-
 .../gno.land/p/demo/teritori/utf16/gno.mod    |   1 -
 .../gno.land/p/demo/teritori/utf16/utf16.gno  | 108 ------------------
 examples/gno.land/r/demo/teritori/README.md   |   2 +-
 5 files changed, 2 insertions(+), 113 deletions(-)
 delete mode 100644 examples/gno.land/p/demo/teritori/utf16/gno.mod
 delete mode 100644 examples/gno.land/p/demo/teritori/utf16/utf16.gno

diff --git a/examples/gno.land/p/demo/teritori/ujson/gno.mod b/examples/gno.land/p/demo/teritori/ujson/gno.mod
index d15229b4875..a6256d37a45 100644
--- a/examples/gno.land/p/demo/teritori/ujson/gno.mod
+++ b/examples/gno.land/p/demo/teritori/ujson/gno.mod
@@ -2,6 +2,5 @@ module gno.land/p/demo/teritori/ujson
 
 require (
 	gno.land/p/demo/avl v0.0.0-latest
-	gno.land/p/demo/teritori/utf16 v0.0.0-latest
 	gno.land/p/demo/users v0.0.0-latest
 )
diff --git a/examples/gno.land/p/demo/teritori/ujson/strings.gno b/examples/gno.land/p/demo/teritori/ujson/strings.gno
index 760b94d9a6f..72f05509f45 100644
--- a/examples/gno.land/p/demo/teritori/ujson/strings.gno
+++ b/examples/gno.land/p/demo/teritori/ujson/strings.gno
@@ -1,9 +1,8 @@
 package ujson
 
 import (
+	"unicode/utf16"
 	"unicode/utf8"
-
-	"gno.land/p/demo/teritori/utf16"
 )
 
 const (
diff --git a/examples/gno.land/p/demo/teritori/utf16/gno.mod b/examples/gno.land/p/demo/teritori/utf16/gno.mod
deleted file mode 100644
index de3600f9bb8..00000000000
--- a/examples/gno.land/p/demo/teritori/utf16/gno.mod
+++ /dev/null
@@ -1 +0,0 @@
-module gno.land/p/demo/teritori/utf16
diff --git a/examples/gno.land/p/demo/teritori/utf16/utf16.gno b/examples/gno.land/p/demo/teritori/utf16/utf16.gno
deleted file mode 100644
index 1a881aa7695..00000000000
--- a/examples/gno.land/p/demo/teritori/utf16/utf16.gno
+++ /dev/null
@@ -1,108 +0,0 @@
-// Copyright 2010 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// Package utf16 implements encoding and decoding of UTF-16 sequences.
-package utf16
-
-// The conditions replacementChar==unicode.ReplacementChar and
-// maxRune==unicode.MaxRune are verified in the tests.
-// Defining them locally avoids this package depending on package unicode.
-
-const (
-	replacementChar = '\uFFFD'     // Unicode replacement character
-	maxRune         = '\U0010FFFF' // Maximum valid Unicode code point.
-)
-
-const (
-	// 0xd800-0xdc00 encodes the high 10 bits of a pair.
-	// 0xdc00-0xe000 encodes the low 10 bits of a pair.
-	// the value is those 20 bits plus 0x10000.
-	surr1 = 0xd800
-	surr2 = 0xdc00
-	surr3 = 0xe000
-
-	surrSelf = 0x10000
-)
-
-// IsSurrogate reports whether the specified Unicode code point
-// can appear in a surrogate pair.
-func IsSurrogate(r rune) bool {
-	return surr1 <= r && r < surr3
-}
-
-// DecodeRune returns the UTF-16 decoding of a surrogate pair.
-// If the pair is not a valid UTF-16 surrogate pair, DecodeRune returns
-// the Unicode replacement code point U+FFFD.
-func DecodeRune(r1, r2 rune) rune {
-	if surr1 <= r1 && r1 < surr2 && surr2 <= r2 && r2 < surr3 {
-		return (r1-surr1)<<10 | (r2 - surr2) + surrSelf
-	}
-	return replacementChar
-}
-
-// EncodeRune returns the UTF-16 surrogate pair r1, r2 for the given rune.
-// If the rune is not a valid Unicode code point or does not need encoding,
-// EncodeRune returns U+FFFD, U+FFFD.
-func EncodeRune(r rune) (r1, r2 rune) {
-	if r < surrSelf || r > maxRune {
-		return replacementChar, replacementChar
-	}
-	r -= surrSelf
-	return surr1 + (r>>10)&0x3ff, surr2 + r&0x3ff
-}
-
-// Encode returns the UTF-16 encoding of the Unicode code point sequence s.
-func Encode(s []rune) []uint16 {
-	n := len(s)
-	for _, v := range s {
-		if v >= surrSelf {
-			n++
-		}
-	}
-
-	a := make([]uint16, n)
-	n = 0
-	for _, v := range s {
-		switch {
-		case 0 <= v && v < surr1, surr3 <= v && v < surrSelf:
-			// normal rune
-			a[n] = uint16(v)
-			n++
-		case surrSelf <= v && v <= maxRune:
-			// needs surrogate sequence
-			r1, r2 := EncodeRune(v)
-			a[n] = uint16(r1)
-			a[n+1] = uint16(r2)
-			n += 2
-		default:
-			a[n] = uint16(replacementChar)
-			n++
-		}
-	}
-	return a[:n]
-}
-
-// Decode returns the Unicode code point sequence represented
-// by the UTF-16 encoding s.
-func Decode(s []uint16) []rune {
-	a := make([]rune, len(s))
-	n := 0
-	for i := 0; i < len(s); i++ {
-		switch r := s[i]; {
-		case r < surr1, surr3 <= r:
-			// normal rune
-			a[n] = rune(r)
-		case surr1 <= r && r < surr2 && i+1 < len(s) &&
-			surr2 <= s[i+1] && s[i+1] < surr3:
-			// valid surrogate sequence
-			a[n] = DecodeRune(rune(r), rune(s[i+1]))
-			i++
-		default:
-			// invalid surrogate sequence
-			a[n] = replacementChar
-		}
-		n++
-	}
-	return a[:n]
-}
diff --git a/examples/gno.land/r/demo/teritori/README.md b/examples/gno.land/r/demo/teritori/README.md
index 4fe806213a3..44fd4fd3772 100644
--- a/examples/gno.land/r/demo/teritori/README.md
+++ b/examples/gno.land/r/demo/teritori/README.md
@@ -44,7 +44,7 @@ Used by some other packages to properly nest markdown renders
 
 Binary utilities we used before having JSON encoding to transfer complex object between UI and chain
 
-### gno.land/p/demo/teritori/utf16
+### unicode/utf16
 
 Golang's utf16 library, used by ujson