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@@ -180,9 +180,9 @@ pub const NON_ALPHANUMERIC: &AsciiSet = &CONTROLS
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/// assert_eq!("foo bar".bytes().map(percent_encode_byte).collect::<String>(),
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/// "%66%6F%6F%20%62%61%72");
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/// ```
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+#[inline]
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pub fn percent_encode_byte(byte: u8) -> &'static str {
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- let index = usize::from(byte) * 3;
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- &"\
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+ static ENC_TABLE: &[u8; 768] = b"\
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%00%01%02%03%04%05%06%07%08%09%0A%0B%0C%0D%0E%0F\
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%10%11%12%13%14%15%16%17%18%19%1A%1B%1C%1D%1E%1F\
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%20%21%22%23%24%25%26%27%28%29%2A%2B%2C%2D%2E%2F\
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@@ -199,7 +199,12 @@ pub fn percent_encode_byte(byte: u8) -> &'static str {
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%D0%D1%D2%D3%D4%D5%D6%D7%D8%D9%DA%DB%DC%DD%DE%DF\
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%E0%E1%E2%E3%E4%E5%E6%E7%E8%E9%EA%EB%EC%ED%EE%EF\
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%F0%F1%F2%F3%F4%F5%F6%F7%F8%F9%FA%FB%FC%FD%FE%FF\
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- "[index..index + 3]
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+ ";
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+
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+ let index = usize::from(byte) * 3;
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+ // SAFETY: ENC_TABLE is ascii-only, so any subset if it should be
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+ // ascii-only too, which is valid utf8.
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+ unsafe { str::from_utf8_unchecked(&ENC_TABLE[index..index + 3]) }
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}
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/// Percent-encode the given bytes with the given set.
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klensy