From a8a35ea688b07a6cd3e342ad75e045b7433d294b Mon Sep 17 00:00:00 2001
From: Bruce Hill <bruce@bruce-hill.com>
Date: Tue, 5 Nov 2024 15:33:08 -0500
Subject: Add Byte.hex()

---
 stdlib/bytes.c | 13 +++++++++++++
 stdlib/bytes.h |  2 ++
 2 files changed, 15 insertions(+)

(limited to 'stdlib')

diff --git a/stdlib/bytes.c b/stdlib/bytes.c
index f36a56ba..694173b9 100644
--- a/stdlib/bytes.c
+++ b/stdlib/bytes.c
@@ -17,6 +17,19 @@ PUREFUNC public Text_t Byte$as_text(const Byte_t *b, bool colorize, const TypeIn
     return Text$format(colorize ? "\x1b[36mByte\x1b[m(\x1b[35m0x%02X\x1b[m)" : "Byte(0x%02X)", *b);
 }
 
+public Text_t Byte$hex(Byte_t byte, bool uppercase, bool prefix) {
+    Text_t text = {.tag=TEXT_SHORT_ASCII};
+    if (prefix && uppercase)
+        text.length = (int64_t)snprintf(text.short_ascii, sizeof(text.short_ascii), "0x%02X", byte);
+    else if (prefix && !uppercase)
+        text.length = (int64_t)snprintf(text.short_ascii, sizeof(text.short_ascii), "0x%02x", byte);
+    else if (!prefix && uppercase)
+        text.length = (int64_t)snprintf(text.short_ascii, sizeof(text.short_ascii), "%02X", byte);
+    else if (!prefix && !uppercase)
+        text.length = (int64_t)snprintf(text.short_ascii, sizeof(text.short_ascii), "%02x", byte);
+    return text;
+}
+
 public const TypeInfo_t Byte$info = {
     .size=sizeof(Byte_t),
     .align=__alignof__(Byte_t),
diff --git a/stdlib/bytes.h b/stdlib/bytes.h
index f073979f..ef5c0729 100644
--- a/stdlib/bytes.h
+++ b/stdlib/bytes.h
@@ -28,6 +28,8 @@ extern const Byte_t Byte$max;
 
 extern const TypeInfo_t Byte$info;
 
+Text_t Byte$hex(Byte_t byte, bool uppercase, bool prefix);
+
 typedef struct {
     Byte_t value;
     bool is_null:1;
-- 
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