Commit f062ec2a1a9d51c81f25d447fadaabfb0765c770 | zig

author	Shun Sakai <sorairolake@protonmail.ch> 2025-03-23 10:20:31+09:00
committer	Alex Rønne Petersen <alex@alexrp.com> 2025-03-24 15:31:58+01:00
log	f062ec2a1a9d51c81f25d447fadaabfb0765c770
tree	95690248df8649a55785926a976552e48702047f
parent	a7cfc23e5a44f980c12bb686450fdd9e74ca958d
signature	Signed by SSH key SHA256:7B/LJ7bpR1eX8aCXSr4mtd5M45VMPKcx9zY8e95b5QM

docs(std.base64): Add references to RFC 4648

There are multiple implementations of Base64, but `std.base64` appears
to be based on RFC 4648, so we clarify that it is based on RFC 4648.

1 files changed, 14 insertions(+), 5 deletions(-)

lib
- std
  - base64.zig

lib/std/base64.zig+14-5

...	...	@@ -1,4 +1,5 @@
1		//! Base64 encoding/decoding.
	1	//! Base64 encoding/decoding as specified by
	2	//! [RFC 4648](https://datatracker.ietf.org/doc/html/rfc4648).
2	3
3	4	const std = @import("std.zig");
4	5	const assert = std.debug.assert;
...	...	@@ -24,12 +25,15 @@ pub const Codecs = struct {
24	25	Decoder: Base64Decoder,
25	26	};
26	27
	28	/// The Base64 alphabet defined in
	29	/// [RFC 4648 section 4](https://datatracker.ietf.org/doc/html/rfc4648#section-4).
27	30	pub const standard_alphabet_chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/".*;
28	31	fn standardBase64DecoderWithIgnore(ignore: []const u8) Base64DecoderWithIgnore {
29	32	return Base64DecoderWithIgnore.init(standard_alphabet_chars, '=', ignore);
30	33	}
31	34
32		/// Standard Base64 codecs, with padding
	35	/// Standard Base64 codecs, with padding, as defined in
	36	/// [RFC 4648 section 4](https://datatracker.ietf.org/doc/html/rfc4648#section-4).
33	37	pub const standard = Codecs{
34	38	.alphabet_chars = standard_alphabet_chars,
35	39	.pad_char = '=',
...	...	@@ -38,7 +42,8 @@ pub const standard = Codecs{
38	42	.Decoder = Base64Decoder.init(standard_alphabet_chars, '='),
39	43	};
40	44
41		/// Standard Base64 codecs, without padding
	45	/// Standard Base64 codecs, without padding, as defined in
	46	/// [RFC 4648 section 3.2](https://datatracker.ietf.org/doc/html/rfc4648#section-3.2).
42	47	pub const standard_no_pad = Codecs{
43	48	.alphabet_chars = standard_alphabet_chars,
44	49	.pad_char = null,
...	...	@@ -47,12 +52,15 @@ pub const standard_no_pad = Codecs{
47	52	.Decoder = Base64Decoder.init(standard_alphabet_chars, null),
48	53	};
49	54
	55	/// The URL-safe Base64 alphabet defined in
	56	/// [RFC 4648 section 5](https://datatracker.ietf.org/doc/html/rfc4648#section-5).
50	57	pub const url_safe_alphabet_chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_".*;
51	58	fn urlSafeBase64DecoderWithIgnore(ignore: []const u8) Base64DecoderWithIgnore {
52	59	return Base64DecoderWithIgnore.init(url_safe_alphabet_chars, null, ignore);
53	60	}
54	61
55		/// URL-safe Base64 codecs, with padding
	62	/// URL-safe Base64 codecs, with padding, as defined in
	63	/// [RFC 4648 section 5](https://datatracker.ietf.org/doc/html/rfc4648#section-5).
56	64	pub const url_safe = Codecs{
57	65	.alphabet_chars = url_safe_alphabet_chars,
58	66	.pad_char = '=',
...	...	@@ -61,7 +69,8 @@ pub const url_safe = Codecs{
61	69	.Decoder = Base64Decoder.init(url_safe_alphabet_chars, '='),
62	70	};
63	71
64		/// URL-safe Base64 codecs, without padding
	72	/// URL-safe Base64 codecs, without padding, as defined in
	73	/// [RFC 4648 section 3.2](https://datatracker.ietf.org/doc/html/rfc4648#section-3.2).
65	74	pub const url_safe_no_pad = Codecs{
66	75	.alphabet_chars = url_safe_alphabet_chars,
67	76	.pad_char = null,