From 26a029d407be480d791972afb5975cf62c9360a6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Fri, 19 Apr 2024 02:47:55 +0200 Subject: Adding upstream version 124.0.1. Signed-off-by: Daniel Baumann --- .../src/hb-buffer-deserialize-text-unicode.rl | 129 +++++++++++++++++++++ 1 file changed, 129 insertions(+) create mode 100644 gfx/harfbuzz/src/hb-buffer-deserialize-text-unicode.rl (limited to 'gfx/harfbuzz/src/hb-buffer-deserialize-text-unicode.rl') diff --git a/gfx/harfbuzz/src/hb-buffer-deserialize-text-unicode.rl b/gfx/harfbuzz/src/hb-buffer-deserialize-text-unicode.rl new file mode 100644 index 0000000000..92873b804f --- /dev/null +++ b/gfx/harfbuzz/src/hb-buffer-deserialize-text-unicode.rl @@ -0,0 +1,129 @@ +/* + * Copyright © 2013 Google, Inc. + * + * This is part of HarfBuzz, a text shaping library. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and its documentation for any purpose, provided that the + * above copyright notice and the following two paragraphs appear in + * all copies of this software. + * + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + * + * Google Author(s): Behdad Esfahbod + */ + +#ifndef HB_BUFFER_DESERIALIZE_TEXT_UNICODE_HH +#define HB_BUFFER_DESERIALIZE_TEXT_UNICODE_HH + +#include "hb.hh" + +%%{ + +machine deserialize_text_unicode; +alphtype unsigned char; +write data; + +action clear_item { + hb_memset (&info, 0, sizeof (info)); +} + +action add_item { + buffer->add_info (info); + if (unlikely (!buffer->successful)) + return false; + if (buffer->have_positions) + buffer->pos[buffer->len - 1] = pos; + *end_ptr = p; +} + +action tok { + tok = p; +} + +action parse_hexdigits {if (!parse_hex (tok, p, &info.codepoint )) return false; } + +action parse_cluster { if (!parse_uint (tok, p, &info.cluster )) return false; } + +unum = '0' | [1-9] digit*; +num = '-'? unum; + +cluster = '=' (unum >tok %parse_cluster); + +unicode = [Uu] '+'? xdigit+ >tok %parse_hexdigits; + +unicode_item = + ( + unicode + cluster? + ) + >clear_item + %add_item + ; + +unicodes = unicode_item (space* '|' space* unicode_item)* space*; + +main := space* unicodes; + +}%% + +static hb_bool_t +_hb_buffer_deserialize_text_unicode (hb_buffer_t *buffer, + const char *buf, + unsigned int buf_len, + const char **end_ptr, + hb_font_t *font) +{ + const char *p = buf, *pe = buf + buf_len, *eof = pe, *orig_pe = pe; + + while (p < pe && ISSPACE (*p)) + p++; + if (p < pe && *p == (buffer->len ? '|' : '<')) + *end_ptr = ++p; + + const char *end = strchr ((char *) p, '>'); + if (end) + pe = eof = end; + else + { + end = strrchr ((char *) p, '|'); + if (end) + pe = eof = end; + else + pe = eof = p; + } + + + const char *tok = nullptr; + int cs; + hb_glyph_info_t info = {0}; + const hb_glyph_position_t pos = {0}; + %%{ + write init; + write exec; + }%% + + if (pe < orig_pe && *pe == '>') + { + pe++; + if (p == pe) + p++; + } + + *end_ptr = p; + + return p == pe; +} + +#endif /* HB_BUFFER_DESERIALIZE_TEXT_UNICODE_HH */ -- cgit v1.2.3