From 1399d23cdf82d95692bcbec53d8dc97a02bc924b Mon Sep 17 00:00:00 2001
From: Stian Skjelstad <stian.skjelstad@gmail.com>
Date: Fri, 23 Aug 2024 15:20:43 +0200
Subject: [PATCH] Add EditStringASCII(), that is relevant for editing URLs

---
 boot/console.c  |  1 +
 stuff/poutput.h |  1 +
 stuff/utf-8.c   | 18 +++++++++++++++++-
 stuff/utf-8.h   |  4 ++++
 4 files changed, 23 insertions(+), 1 deletion(-)

diff --git a/boot/console.c b/boot/console.c
index 8d405126..9074f650 100644
--- a/boot/console.c
+++ b/boot/console.c
@@ -781,6 +781,7 @@ struct console_t Console =
 	try_open_png,
 	EditStringUTF8z,
 	EditStringUTF8,
+	EditStringASCII,
 	80,      /* TextHeight */
 	25,      /* TextWidth */
 	0,       /* TextGUIOverlay */
diff --git a/stuff/poutput.h b/stuff/poutput.h
index 281c4c11..a5202e21 100644
--- a/stuff/poutput.h
+++ b/stuff/poutput.h
@@ -112,6 +112,7 @@ struct console_t
 	int (*EditStringUTF8z)(unsigned int y, unsigned int x, unsigned int w, int l, char *s);
 	/* zero-terminated, forever long dynamic buffer */
 	int (*EditStringUTF8)(unsigned int y, unsigned int x, unsigned int w, char **s);
+	int (*EditStringASCII)(unsigned int y, unsigned int x, unsigned int w, char **s);
 
 	/* console resolution */
 	unsigned int TextHeight; /* range 25..inifinity */
diff --git a/stuff/utf-8.c b/stuff/utf-8.c
index ce600c65..48272bc8 100644
--- a/stuff/utf-8.c
+++ b/stuff/utf-8.c
@@ -463,7 +463,7 @@ int EditStringUTF8z (unsigned int y, unsigned int x, unsigned int w, int l, char
 }
 
 
-int EditStringUTF8(unsigned int y, unsigned int x, unsigned int w, char **s)
+static int _EditStringUTF8(unsigned int y, unsigned int x, unsigned int w, char **s, int ASCIIonly)
 {
 /* problems:
    each UTF-8 noun might be 1-4 bytes per character   <- use utf8_decode in a loop to cycle positions
@@ -592,6 +592,13 @@ int EditStringUTF8(unsigned int y, unsigned int x, unsigned int w, char **s)
 				continue;
 			}
 			input_buffer_fill = 0;
+			if (ASCIIonly)
+			{
+				if (codepoint > 127)
+				{
+					continue;
+				}
+			}
 
 			if ( insmode || ( curpos == workstring_length ) ) /* insert / append */
 			{
@@ -702,6 +709,15 @@ int EditStringUTF8(unsigned int y, unsigned int x, unsigned int w, char **s)
 	return 1;
 }
 
+int EditStringUTF8(unsigned int y, unsigned int x, unsigned int w, char **s)
+{
+	return _EditStringUTF8 (y, x, w, s, 0);
+}
+
+int EditStringASCII(unsigned int y, unsigned int x, unsigned int w, char **s)
+{
+	return _EditStringUTF8 (y, x, w, s, 1);
+}
 
 #if 0
 
diff --git a/stuff/utf-8.h b/stuff/utf-8.h
index d15960a8..b6d5764b 100644
--- a/stuff/utf-8.h
+++ b/stuff/utf-8.h
@@ -25,4 +25,8 @@ int EditStringUTF8z(unsigned int y, unsigned int x, unsigned int w, int l, char
 /* zero-terminated, forever long dynamic buffer */
 int EditStringUTF8(unsigned int y, unsigned int x, unsigned int w, char **s);
 
+/* zero-terminated, forever long dynamic buffer */
+int EditStringASCII(unsigned int y, unsigned int x, unsigned int w, char **s);
+
+
 #endif