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)

1 files changed, 0 insertions, 87 deletions

diff --git a/vendor/librune/lib/utf8/u8rchr.c b/vendor/librune/lib/utf8/u8rchr.c
deleted file mode 100644
index b2668e4..0000000
--- a/vendor/librune/lib/utf8/u8rchr.c
+++ /dev/null
@@ -1,87 +0,0 @@
-#include <stddef.h>
-#include <stdint.h>
-
-#define _RUNE_NO_MACRO_WRAPPER 1
-#include "utf8.h"
-
-static char8_t *
-memrchr1(const char8_t *s, size_t k, const char8_t *n)
-{
-	for (const char8_t *p = s + k - 1; k-- > 0; p--) {
-		if (*p == *n)
-			return (char8_t *)p;
-	}
-	return nullptr;
-}
-
-static char8_t *
-memrchr2(const char8_t *h, size_t k, const char8_t *n)
-{
-	uint16_t hw, nw;
-	const char8_t *H = h + k - 1;
-	hw = H[-1] << 8 | H[-0];
-	nw = n[+0] << 8 | n[+1];
-
-	for (H -= 2, k -= 2; k; k--, hw = hw >> 8 | (*H-- << 8)) {
-		if (hw == nw)
-			return (char8_t *)H + 1;
-	}
-
-	return hw == nw ? (char8_t *)H + 1 : nullptr;
-}
-
-static char8_t *
-memrchr3(const char8_t *h, size_t k, const char8_t *n)
-{
-	uint32_t hw, nw;
-	const char8_t *H = h + k - 1;
-	hw = H[-2] << 24 | H[-1] << 16 | H[-0] << 8;
-	nw = n[+0] << 24 | n[+1] << 16 | n[+2] << 8;
-
-	for (H -= 3, k -= 3; k;
-	     k--, hw = (hw >> 8 | (*H-- << 24)) & UINT32_C(0xFFFFFF00))
-	{
-		if (hw == nw)
-			return (char8_t *)H + 1;
-	}
-
-	return hw == nw ? (char8_t *)H + 1 : nullptr;
-}
-
-static char8_t *
-memrchr4(const char8_t *h, size_t k, const char8_t *n)
-{
-	uint32_t hw, nw;
-	const char8_t *H = h + k - 1;
-	hw = H[-3] << 24 | H[-2] << 16 | H[-1] << 8 | H[-0];
-	nw = n[+0] << 24 | n[+1] << 16 | n[+2] << 8 | n[+3];
-
-	for (H -= 4, k -= 4; k; k--, hw = hw >> 8 | (*H-- << 24)) {
-		if (hw == nw)
-			return (char8_t *)H + 1;
-	}
-
-	return hw == nw ? (char8_t *)H + 1 : nullptr;
-}
-
-char8_t *
-u8rchr(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 (char8_t *)memrchr1(s, n, buf);
-	case 2:
-		return (char8_t *)memrchr2(s, n, buf);
-	case 3:
-		return (char8_t *)memrchr3(s, n, buf);
-	case 4:
-		return (char8_t *)memrchr4(s, n, buf);
-	}
-
-	unreachable();
-}