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gfx/harfbuzz/src/hb-buffer-deserialize-json.rl@129ffea94266 (annotated)

gfx/harfbuzz/src/hb-buffer-deserialize-json.rl

Sat, 03 Jan 2015 20:18:00 +0100

author

Michael Schloh von Bennewitz <michael@schloh.com>

date

Sat, 03 Jan 2015 20:18:00 +0100

branch

TOR_BUG_3246

changeset 7

129ffea94266

permissions

-rw-r--r--

Conditionally enable double key logic according to:
private browsing mode or privacy.thirdparty.isolate preference and
implement in GetCookieStringCommon and FindCookie where it counts...
With some reservations of how to convince FindCookie users to test
condition and pass a nullptr when disabling double key logic.

michael@0	1	/*
michael@0	2	* Copyright © 2013 Google, Inc.
michael@0	3	*
michael@0	4	* This is part of HarfBuzz, a text shaping library.
michael@0	5	*
michael@0	6	* Permission is hereby granted, without written agreement and without
michael@0	7	* license or royalty fees, to use, copy, modify, and distribute this
michael@0	8	* software and its documentation for any purpose, provided that the
michael@0	9	* above copyright notice and the following two paragraphs appear in
michael@0	10	* all copies of this software.
michael@0	11	*
michael@0	12	* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
michael@0	13	* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
michael@0	14	* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
michael@0	15	* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
michael@0	16	* DAMAGE.
michael@0	17	*
michael@0	18	* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
michael@0	19	* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
michael@0	20	* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
michael@0	21	* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
michael@0	22	* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
michael@0	23	*
michael@0	24	* Google Author(s): Behdad Esfahbod
michael@0	25	*/
michael@0	26
michael@0	27	#ifndef HB_BUFFER_DESERIALIZE_JSON_HH
michael@0	28	#define HB_BUFFER_DESERIALIZE_JSON_HH
michael@0	29
michael@0	30	#include "hb-private.hh"
michael@0	31
michael@0	32	%%{
michael@0	33
michael@0	34	machine deserialize_json;
michael@0	35	alphtype unsigned char;
michael@0	36	write data;
michael@0	37
michael@0	38	action clear_item {
michael@0	39	memset (&info, 0, sizeof (info));
michael@0	40	memset (&pos , 0, sizeof (pos ));
michael@0	41	}
michael@0	42
michael@0	43	action add_item {
michael@0	44	buffer->add_info (info);
michael@0	45	if (buffer->in_error)
michael@0	46	return false;
michael@0	47	buffer->pos[buffer->len - 1] = pos;
michael@0	48	*end_ptr = p;
michael@0	49	}
michael@0	50
michael@0	51	action tok {
michael@0	52	tok = p;
michael@0	53	}
michael@0	54
michael@0	55	action parse_glyph {
michael@0	56	if (!hb_font_glyph_from_string (font,
michael@0	57	tok, p - tok,
michael@0	58	&info.codepoint))
michael@0	59	return false;
michael@0	60	}
michael@0	61
michael@0	62	action parse_gid { if (!parse_uint (tok, p, &info.codepoint)) return false; }
michael@0	63	action parse_cluster { if (!parse_uint (tok, p, &info.cluster )) return false; }
michael@0	64	action parse_x_offset { if (!parse_int (tok, p, &pos.x_offset )) return false; }
michael@0	65	action parse_y_offset { if (!parse_int (tok, p, &pos.y_offset )) return false; }
michael@0	66	action parse_x_advance { if (!parse_int (tok, p, &pos.x_advance)) return false; }
michael@0	67	action parse_y_advance { if (!parse_int (tok, p, &pos.y_advance)) return false; }
michael@0	68
michael@0	69	unum = '0' | [1-9] digit*;
michael@0	70	num = '-'? unum;
michael@0	71
michael@0	72	comma = space* ',' space*;
michael@0	73	colon = space* ':' space*;
michael@0	74
michael@0	75	glyph_id = unum;
michael@0	76	glyph_name = alpha (alnum|'_'|'.'|'-')*;
michael@0	77
michael@0	78	glyph_string = '"' (glyph_name >tok %parse_glyph) '"';
michael@0	79	glyph_number = (glyph_id >tok %parse_gid);
michael@0	80
michael@0	81	glyph = "\"g\"" colon (glyph_string | glyph_number);
michael@0	82	cluster = "\"cl\"" colon (unum >tok %parse_cluster);
michael@0	83	xoffset = "\"dx\"" colon (num >tok %parse_x_offset);
michael@0	84	yoffset = "\"dy\"" colon (num >tok %parse_y_offset);
michael@0	85	xadvance= "\"ax\"" colon (num >tok %parse_x_advance);
michael@0	86	yadvance= "\"ay\"" colon (num >tok %parse_y_advance);
michael@0	87
michael@0	88	element = glyph | cluster | xoffset | yoffset | xadvance | yadvance;
michael@0	89	item =
michael@0	90	( '{' space* element (comma element)* space* '}')
michael@0	91	>clear_item
michael@0	92	@add_item
michael@0	93	;
michael@0	94
michael@0	95	main := space* item (comma item)* space* (','|']')?;
michael@0	96
michael@0	97	}%%
michael@0	98
michael@0	99	static hb_bool_t
michael@0	100	_hb_buffer_deserialize_glyphs_json (hb_buffer_t *buffer,
michael@0	101	const char *buf,
michael@0	102	unsigned int buf_len,
michael@0	103	const char **end_ptr,
michael@0	104	hb_font_t *font)
michael@0	105	{
michael@0	106	const char *p = buf, *pe = buf + buf_len;
michael@0	107
michael@0	108	/* Ensure we have positions. */
michael@0	109	(void) hb_buffer_get_glyph_positions (buffer, NULL);
michael@0	110
michael@0	111	while (p < pe && ISSPACE (*p))
michael@0	112	p++;
michael@0	113	if (p < pe && *p == (buffer->len ? ',' : '['))
michael@0	114	{
michael@0	115	*end_ptr = ++p;
michael@0	116	}
michael@0	117
michael@0	118	const char *tok = NULL;
michael@0	119	int cs;
michael@0	120	hb_glyph_info_t info;
michael@0	121	hb_glyph_position_t pos;
michael@0	122	%%{
michael@0	123	write init;
michael@0	124	write exec;
michael@0	125	}%%
michael@0	126
michael@0	127	*end_ptr = p;
michael@0	128
michael@0	129	return p == pe && *(p-1) != ']';
michael@0	130	}
michael@0	131
michael@0	132	#endif /* HB_BUFFER_DESERIALIZE_JSON_HH */