Sanitize control characters in textbox input (#144)

Signed-off-by: Marek Maškarinec <[email protected]>

Author: marekmaskarinec

src/staembed.c

@@ -1,4 +1,4 @@
-#include "tophat.h" 
+#include "tophat.h"
 const char *th_em_modulesrc[] = {
 "\n"
 "import (\n"
@@ -534,7 +534,9 @@ const char *th_em_modulesrc[] = {
 "\n"
 "fn umth_image_render_target_to_image(ret: ^Image, rt: RenderTarget)\n"
 "//~~fn RenderTarget.toImage\n"
-"// Returns the image of the render target.\n"
+"// Returns the image of the render target. The resulting image has the same\n"
+"// lifetime as the base RenderTarget. If you need to use it past the lifetime\n"
+"// of the RenderTarget, use the copy method.\n"
 "// Do not call `setfilter` on the resulting image.\n"
 "fn (rt: ^RenderTarget) toImage*(): Image {\n"
 "//~~\n"
@@ -3720,6 +3722,13 @@ const char *th_em_modulesrc[] = {
 "\t\t}\n"
 "\n"
 "\t\trunes := utf8.decode(input.getStr())\n"
+"\t\tfor i:=0; i < len(runes); i++ {\n"
+"\t\t\tif runes[i] < 32 {\n"
+"\t\t\t\trunes = delete(runes, i)\n"
+"\t\t\t\ti--\n"
+"\t\t\t}\n"
+"\t\t}\n"
+"\n"
 "\t\tif len(runes) > 0 && v {\n"
 "\t\t\ttb.buffer = append(append(slice(tb.buffer, 0, tb.cursor), runes), slice(tb.buffer, tb.cursor))\n"
 "\t\t\ttb.cursor += len(runes)\n"
@@ -4251,7 +4260,9 @@ const char *th_em_moduledocs[] = {
 "fn (rt: ^RenderTarget) toImage*(): Image {\n"
 "```\n"
 "\n"
-"Returns the image of the render target.\n"
+"Returns the image of the render target. The resulting image has the same\n"
+"lifetime as the base RenderTarget. If you need to use it past the lifetime\n"
+"of the RenderTarget, use the copy method.\n"
 "Do not call `setfilter` on the resulting image.\n"
 "\n"
 "\n"

umka/ui.um

@@ -790,6 +790,13 @@ fn (gui: ^Gui) textBox*(tb: ^TextBox, cfg: TextBoxConfig = {}) {
 		}
 
 		runes := utf8.decode(input.getStr())
+		for i:=0; i < len(runes); i++ {
+			if runes[i] < 32 {
+				runes = delete(runes, i)
+				i--
+			}
+		}
+
 		if len(runes) > 0 && v {
 			tb.buffer = append(append(slice(tb.buffer, 0, tb.cursor), runes), slice(tb.buffer, tb.cursor))
 			tb.cursor += len(runes)