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/gbrk/u8gnext.c | 164 --------------------------------------
 1 file changed, 164 deletions(-)
 delete mode 100644 vendor/librune/lib/gbrk/u8gnext.c

(limited to 'vendor/librune/lib/gbrk/u8gnext.c')

diff --git a/vendor/librune/lib/gbrk/u8gnext.c b/vendor/librune/lib/gbrk/u8gnext.c
deleted file mode 100644
index 5dae265..0000000
--- a/vendor/librune/lib/gbrk/u8gnext.c
+++ /dev/null
@@ -1,164 +0,0 @@
-#include <stddef.h>
-
-#include "gbrk.h"
-#include "utf8.h"
-
-#include "internal/common.h"
-#include "internal/gbrk_lookup.h"
-
-struct gbrk_state {
-	enum {
-		GB9C_NONE,
-		GB9C_CNSNT,
-		GB9C_LNK,
-	} gb9c;
-	bool gb11 : 1;
-	bool gb12 : 1;
-};
-
-static bool u8isgbrk(rune, rune, struct gbrk_state *);
-static gbrk_prop getprop(rune);
-
-size_t
-u8gnext(struct u8view *g, const char8_t **s, size_t *n)
-{
-	int m;
-	rune ch1;
-	const char8_t *p;
-	struct gbrk_state gs = {0};
-
-	if (*n == 0)
-		return 0;
-
-	g->p = p = *s;
-	p += u8tor_uc(&ch1, p);
-
-	for (;;) {
-		rune ch2;
-
-		if ((size_t)(p - *s) >= *n)
-			ch2 = 0;
-		else
-			m = u8tor_uc(&ch2, p);
-		if (u8isgbrk(ch1, ch2, &gs)) {
-			*n -= g->len = p - *s;
-			*s = p;
-			return g->len;
-		}
-
-		ch1 = ch2;
-		p += m;
-	}
-}
-
-bool
-u8isgbrk(rune a, rune b, struct gbrk_state *gs)
-{
-	gbrk_prop ap, bp;
-
-	/* GB1 & GB2 */
-	if (!a || !b)
-		goto do_break;
-
-	/* GB3 & ASCII fast-track */
-	if ((a | b) < 0x300) {
-		if (a == '\r' && b == '\n')
-			return false;
-		goto do_break;
-	}
-
-	/* GB4 */
-	if (a == '\r' || a == '\n' || ((ap = getprop(a)) & GBP_CTRL))
-		goto do_break;
-
-	/* GB5 */
-	if (b == '\r' || b == '\n' || ((bp = getprop(b)) & GBP_CTRL))
-		goto do_break;
-
-	/* Setting flags for GB9c */
-	if (ap & GBP_INDC_CNSNT)
-		gs->gb9c = GB9C_CNSNT;
-	else if ((ap & GBP_INDC_LNK) && gs->gb9c == GB9C_CNSNT)
-		gs->gb9c = GB9C_LNK;
-
-	/* GB6 */
-	if ((ap & GBP_HNGL_L)
-	    && (bp & (GBP_HNGL_L | GBP_HNGL_V | GBP_HNGL_LV | GBP_HNGL_LVT)))
-	{
-		return false;
-	}
-
-	/* GB7 */
-	if ((ap & (GBP_HNGL_LV | GBP_HNGL_V)) && (bp & (GBP_HNGL_V | GBP_HNGL_T)))
-		return false;
-
-	/* GB8 */
-	if ((ap & (GBP_HNGL_LVT | GBP_HNGL_T)) && (bp & GBP_HNGL_T))
-		return false;
-
-	/* GB9 */
-	if (bp & (GBP_EXT | GBP_ZWJ)) {
-		if (ap & GBP_PIC)
-			gs->gb11 = true;
-		return false;
-	}
-
-	/* GB9a */
-	if (bp & GBP_SM)
-		return false;
-
-	/* GB9b */
-	if (ap & GBP_PREP)
-		return false;
-
-	/* GB9c */
-	if ((ap & (GBP_INDC_EXT | GBP_INDC_LNK)) && (bp & GBP_INDC_CNSNT)
-	    && gs->gb9c == GB9C_LNK)
-	{
-		return false;
-	}
-
-	/* GB11 */
-	if (gs->gb11) {
-		if ((ap & GBP_EXT) && (bp & (GBP_EXT | GBP_ZWJ)))
-			return false;
-		if ((ap & GBP_ZWJ) && (bp & GBP_PIC))
-			return false;
-	}
-
-	/* GB12 & GB13 */
-	if (ap & GBP_RI) {
-		if (gs->gb12 || !(bp & GBP_RI))
-			goto do_break;
-		gs->gb12 = true;
-		return false;
-	}
-
-	/* GB999 */
-do_break:
-	gs->gb9c = GB9C_NONE;
-	gs->gb11 = gs->gb12 = false;
-	return true;
-}
-
-gbrk_prop
-getprop(rune ch)
-{
-	ptrdiff_t lo, hi;
-
-	lo = 0;
-	hi = lengthof(gbrk_prop_tbl) - 1;
-
-	while (lo <= hi) {
-		ptrdiff_t i = (lo + hi) / 2;
-
-		if (ch < gbrk_prop_tbl[i].lo)
-			hi = i - 1;
-		else if (ch > gbrk_prop_tbl[i].hi)
-			lo = i + 1;
-		else
-			return gbrk_prop_tbl[i].prop;
-	}
-
-	return GBP_OTHER;
-}
-- 
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