1 files changed, 35 insertions, 0 deletions
diff --git a/src/asn1_types/strings/printablestring.rs b/src/asn1_types/strings/printablestring.rs
new file mode 100644
index 0000000..5cd51fa
--- /dev/null
+++ b/src/asn1_types/strings/printablestring.rs
@@ -0,0 +1,35 @@
+use crate::{asn1_string, TestValidCharset};
+use crate::{Error, Result};
+use alloc::string::String;
+
+asn1_string!(PrintableString);
+
+impl<'a> TestValidCharset for PrintableString<'a> {
+    fn test_valid_charset(i: &[u8]) -> Result<()> {
+        // Argument must be a reference, because of the .iter().all(F) call below
+        #[allow(clippy::trivially_copy_pass_by_ref)]
+        fn is_printable(b: &u8) -> bool {
+            matches!(*b,
+            b'a'..=b'z'
+            | b'A'..=b'Z'
+            | b'0'..=b'9'
+            | b' '
+            | b'\''
+            | b'('
+            | b')'
+            | b'+'
+            | b','
+            | b'-'
+            | b'.'
+            | b'/'
+            | b':'
+            | b'='
+            | b'?')
+        }
+
+        if !i.iter().all(is_printable) {
+            return Err(Error::StringInvalidCharset);
+        }
+        Ok(())
+    }
+}