From f5878b3ffbef39b69f93f4c18549640372f87077 Mon Sep 17 00:00:00 2001
From: zachir <zachir@librem.one>
Date: Mon, 20 Feb 2023 01:09:42 -0600
Subject: initialize branch at st 0.9 upstream

---
 hb.c | 136 -------------------------------------------------------------------
 1 file changed, 136 deletions(-)
 delete mode 100644 hb.c

(limited to 'hb.c')

diff --git a/hb.c b/hb.c
deleted file mode 100644
index 7df2828..0000000
--- a/hb.c
+++ /dev/null
@@ -1,136 +0,0 @@
-#include <stdlib.h>
-#include <stdio.h>
-#include <math.h>
-#include <X11/Xft/Xft.h>
-#include <hb.h>
-#include <hb-ft.h>
-
-#include "st.h"
-
-void hbtransformsegment(XftFont *xfont, const Glyph *string, hb_codepoint_t *codepoints, int start, int length);
-hb_font_t *hbfindfont(XftFont *match);
-
-typedef struct {
-	XftFont *match;
-	hb_font_t *font;
-} HbFontMatch;
-
-static int hbfontslen = 0;
-static HbFontMatch *hbfontcache = NULL;
-
-void
-hbunloadfonts()
-{
-	for (int i = 0; i < hbfontslen; i++) {
-		hb_font_destroy(hbfontcache[i].font);
-		XftUnlockFace(hbfontcache[i].match);
-	}
-
-	if (hbfontcache != NULL) {
-		free(hbfontcache);
-		hbfontcache = NULL;
-	}
-	hbfontslen = 0;
-}
-
-hb_font_t *
-hbfindfont(XftFont *match)
-{
-	for (int i = 0; i < hbfontslen; i++) {
-		if (hbfontcache[i].match == match)
-			return hbfontcache[i].font;
-	}
-
-	/* Font not found in cache, caching it now. */
-	hbfontcache = realloc(hbfontcache, sizeof(HbFontMatch) * (hbfontslen + 1));
-	FT_Face face = XftLockFace(match);
-	hb_font_t *font = hb_ft_font_create(face, NULL);
-	if (font == NULL)
-		die("Failed to load Harfbuzz font.");
-
-	hbfontcache[hbfontslen].match = match;
-	hbfontcache[hbfontslen].font = font;
-	hbfontslen += 1;
-
-	return font;
-}
-
-void
-hbtransform(XftGlyphFontSpec *specs, const Glyph *glyphs, size_t len, int x, int y)
-{
-	int start = 0, length = 1, gstart = 0;
-	hb_codepoint_t *codepoints = calloc(len, sizeof(hb_codepoint_t));
-
-	for (int idx = 1, specidx = 1; idx < len; idx++) {
-		if (glyphs[idx].mode & ATTR_WDUMMY) {
-			length += 1;
-			continue;
-		}
-
-		if (specs[specidx].font != specs[start].font || ATTRCMP(glyphs[gstart], glyphs[idx]) || selected(x + idx, y) != selected(x + gstart, y)) {
-			hbtransformsegment(specs[start].font, glyphs, codepoints, gstart, length);
-
-			/* Reset the sequence. */
-			length = 1;
-			start = specidx;
-			gstart = idx;
-		} else {
-			length += 1;
-		}
-
-		specidx++;
-	}
-
-	/* EOL. */
-	hbtransformsegment(specs[start].font, glyphs, codepoints, gstart, length);
-
-	/* Apply the transformation to glyph specs. */
-	for (int i = 0, specidx = 0; i < len; i++) {
-		if (glyphs[i].mode & ATTR_WDUMMY)
-			continue;
-
-		if (codepoints[i] != specs[specidx].glyph)
-			((Glyph *)glyphs)[i].mode |= ATTR_LIGA;
-
-		specs[specidx++].glyph = codepoints[i];
-	}
-
-	free(codepoints);
-}
-
-void
-hbtransformsegment(XftFont *xfont, const Glyph *string, hb_codepoint_t *codepoints, int start, int length)
-{
-	hb_font_t *font = hbfindfont(xfont);
-	if (font == NULL)
-		return;
-
-	Rune rune;
-	ushort mode = USHRT_MAX;
-	hb_buffer_t *buffer = hb_buffer_create();
-	hb_buffer_set_direction(buffer, HB_DIRECTION_LTR);
-
-	/* Fill buffer with codepoints. */
-	for (int i = start; i < (start+length); i++) {
-		rune = string[i].u;
-		mode = string[i].mode;
-		if (mode & ATTR_WDUMMY)
-			rune = 0x0020;
-		hb_buffer_add_codepoints(buffer, &rune, 1, 0, 1);
-	}
-
-	/* Shape the segment. */
-	hb_shape(font, buffer, NULL, 0);
-
-	/* Get new glyph info. */
-	hb_glyph_info_t *info = hb_buffer_get_glyph_infos(buffer, NULL);
-
-	/* Write new codepoints. */
-	for (int i = 0; i < length; i++) {
-		hb_codepoint_t gid = info[i].codepoint;
-		codepoints[start+i] = gid;
-	}
-
-	/* Cleanup. */
-	hb_buffer_destroy(buffer);
-}
-- 
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