From 042e43247f396a9000fead59d9bff87bf12806d6 Mon Sep 17 00:00:00 2001
From: Thomas Voss <mail@thomasvoss.com>
Date: Wed, 30 Oct 2024 01:51:14 +0100
Subject: Completely revamp the grab source code

Some of the (many) few changes are:
- Multithreading for significantly faster performance
- The -p/--predicate flag
- Byte offsets as the default
- No customizable colors (maybe this will come back later)
- Newer edition of mlib (formerly librune)
---
 vendor/librune/lib/utf8/u8chr.c | 97 -----------------------------------------
 1 file changed, 97 deletions(-)
 delete mode 100644 vendor/librune/lib/utf8/u8chr.c

(limited to 'vendor/librune/lib/utf8/u8chr.c')

diff --git a/vendor/librune/lib/utf8/u8chr.c b/vendor/librune/lib/utf8/u8chr.c
deleted file mode 100644
index c387300..0000000
--- a/vendor/librune/lib/utf8/u8chr.c
+++ /dev/null
@@ -1,97 +0,0 @@
-#include <stddef.h>
-#include <stdint.h>
-#include <string.h>
-
-#define _RUNE_NO_MACRO_WRAPPER 1
-#include "utf8.h"
-
-/* NOTE: The memmem*() functions were taken directly from the memmem()
-   implementation on OpenBSD.  As a result, these functions are licensed under
-   OpenBSDs 2-Clause BSD License instead of this libraries 0-Clause BSD License.
-
-   The license for these functions is as follows:
-
-       Copyright © 2005–2020 Rich Felker, et al.
-
-       Permission is hereby granted, free of charge, to any person obtaining
-       a copy of this software and associated documentation files (the
-       “Software”), to deal in the Software without restriction, including
-       without limitation the rights to use, copy, modify, merge, publish,
-       distribute, sublicense, and/or sell copies of the Software, and to
-       permit persons to whom the Software is furnished to do so, subject to
-       the following conditions:
-
-       The above copyright notice and this permission notice shall be
-       included in all copies or substantial portions of the Software.
-
-       THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND,
-       EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-       MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
-       IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
-       CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
-       TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
-       SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
-
-static char8_t *
-memmem2(const char8_t *h, size_t k, const char8_t *n)
-{
-	uint16_t hw, nw;
-	hw = h[0] << 8 | h[1];
-	nw = n[0] << 8 | n[1];
-
-	for (h += 2, k -= 2; k; k--, hw = hw << 8 | *h++) {
-		if (hw == nw)
-			return (char8_t *)h - 2;
-	}
-	return hw == nw ? (char8_t *)h - 2 : nullptr;
-}
-
-static char8_t *
-memmem3(const char8_t *h, size_t k, const char8_t *n)
-{
-	uint32_t hw, nw;
-	hw = h[0] << 24 | h[1] << 16 | h[2] << 8;
-	nw = n[0] << 24 | n[1] << 16 | n[2] << 8;
-
-	for (h += 3, k -= 3; k; k--, hw = (hw | *h++) << 8) {
-		if (hw == nw)
-			return (char8_t *)h - 3;
-	}
-	return hw == nw ? (char8_t *)h - 3 : nullptr;
-}
-
-static char8_t *
-memmem4(const char8_t *h, size_t k, const char8_t *n)
-{
-	uint32_t hw, nw;
-	hw = h[0] << 24 | h[1] << 16 | h[2] << 8 | h[3];
-	nw = n[0] << 24 | n[1] << 16 | n[2] << 8 | n[3];
-
-	for (h += 4, k -= 4; k; k--, hw = hw << 8 | *h++) {
-		if (hw == nw)
-			return (char8_t *)h - 4;
-	}
-	return hw == nw ? (char8_t *)h - 4 : nullptr;
-}
-
-char8_t *
-u8chr(const char8_t *s, rune ch, size_t n)
-{
-	char8_t buf[U8_LEN_MAX];
-	int m = rtou8(buf, ch, sizeof(buf));
-
-	if (n < (size_t)m)
-		return nullptr;
-	switch (m) {
-	case 1:
-		return memchr(s, ch, n);
-	case 2:
-		return memmem2(s, n, buf);
-	case 3:
-		return memmem3(s, n, buf);
-	case 4:
-		return memmem4(s, n, buf);
-	}
-
-	unreachable();
-}
-- 
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