guarding against non-ASCII ISO codes (#247)

digitalghost-dev · digitalghost-dev · commit 95ef4848ad7e · 2026-03-25T11:15:58.000-07:00
diff --git a/cmd/tcg/data.go b/cmd/tcg/data.go
@@ -53,5 +53,8 @@ func countryFlag(isoCode string) string {
 	if len(code) != 2 {
 		return ""
 	}
+	if code[0] < 'A' || code[0] > 'Z' || code[1] < 'A' || code[1] > 'Z' {
+		return ""
+	}
 	return string(rune(0x1F1E6+(rune(code[0])-'A'))) + string(rune(0x1F1E6+(rune(code[1])-'A')))
 }

Original file line number	Diff line number	Diff line change
`@@ -53,5 +53,8 @@ func countryFlag(isoCode string) string {`
`53`	`53`	`if len(code) != 2 {`
`54`	`54`	`return ""`
`55`	`55`	`}`
	`56`	`+ if code[0] < 'A' \|\| code[0] > 'Z' \|\| code[1] < 'A' \|\| code[1] > 'Z' {`
	`57`	`+ return ""`
	`58`	`+ }`
`56`	`59`	`return string(rune(0x1F1E6+(rune(code[0])-'A'))) + string(rune(0x1F1E6+(rune(code[1])-'A')))`
`57`	`60`	`}`