mirror of
https://github.com/google/pebble.git
synced 2025-03-19 10:31:21 +00:00
143 lines
5.7 KiB
C
143 lines
5.7 KiB
C
/* Copyright 2015-2016 Samsung Electronics Co., Ltd.
|
|
* Copyright 2016 University of Szeged.
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
#ifndef LIT_STRINGS_H
|
|
#define LIT_STRINGS_H
|
|
|
|
#include "jrt.h"
|
|
#include "lit-globals.h"
|
|
|
|
/**
|
|
* Null character (used in few cases as utf-8 string end marker)
|
|
*/
|
|
#define LIT_BYTE_NULL (0)
|
|
|
|
/**
|
|
* For the formal definition of Unicode transformation formats (UTF) see Section 3.9, Unicode Encoding Forms in The
|
|
* Unicode Standard (http://www.unicode.org/versions/Unicode3.0.0/ch03.pdf#G7404).
|
|
*/
|
|
#define LIT_UNICODE_CODE_POINT_NULL (0x0)
|
|
#define LIT_UNICODE_CODE_POINT_MAX (0x10FFFF)
|
|
|
|
#define LIT_UTF16_CODE_UNIT_MAX (0xFFFF)
|
|
#define LIT_UTF16_FIRST_SURROGATE_CODE_POINT (0x10000)
|
|
#define LIT_UTF16_LOW_SURROGATE_MARKER (0xDC00)
|
|
#define LIT_UTF16_HIGH_SURROGATE_MARKER (0xD800)
|
|
#define LIT_UTF16_HIGH_SURROGATE_MIN (0xD800)
|
|
#define LIT_UTF16_HIGH_SURROGATE_MAX (0xDBFF)
|
|
#define LIT_UTF16_LOW_SURROGATE_MIN (0xDC00)
|
|
#define LIT_UTF16_LOW_SURROGATE_MAX (0xDFFF)
|
|
#define LIT_UTF16_BITS_IN_SURROGATE (10)
|
|
#define LIT_UTF16_LAST_10_BITS_MASK (0x3FF)
|
|
|
|
#define LIT_UTF8_1_BYTE_MARKER (0x00)
|
|
#define LIT_UTF8_2_BYTE_MARKER (0xC0)
|
|
#define LIT_UTF8_3_BYTE_MARKER (0xE0)
|
|
#define LIT_UTF8_4_BYTE_MARKER (0xF0)
|
|
#define LIT_UTF8_5_BYTE_MARKER (0xF8)
|
|
#define LIT_UTF8_EXTRA_BYTE_MARKER (0x80)
|
|
|
|
#define LIT_UTF8_1_BYTE_MASK (0x80)
|
|
#define LIT_UTF8_2_BYTE_MASK (0xE0)
|
|
#define LIT_UTF8_3_BYTE_MASK (0xF0)
|
|
#define LIT_UTF8_4_BYTE_MASK (0xF8)
|
|
#define LIT_UTF8_EXTRA_BYTE_MASK (0xC0)
|
|
|
|
#define LIT_UTF8_LAST_7_BITS_MASK (0x7F)
|
|
#define LIT_UTF8_LAST_6_BITS_MASK (0x3F)
|
|
#define LIT_UTF8_LAST_5_BITS_MASK (0x1F)
|
|
#define LIT_UTF8_LAST_4_BITS_MASK (0x0F)
|
|
#define LIT_UTF8_LAST_3_BITS_MASK (0x07)
|
|
#define LIT_UTF8_LAST_2_BITS_MASK (0x03)
|
|
#define LIT_UTF8_LAST_1_BIT_MASK (0x01)
|
|
|
|
#define LIT_UTF8_BITS_IN_EXTRA_BYTES (6)
|
|
|
|
#define LIT_UTF8_1_BYTE_CODE_POINT_MAX (0x7F)
|
|
#define LIT_UTF8_2_BYTE_CODE_POINT_MIN (0x80)
|
|
#define LIT_UTF8_2_BYTE_CODE_POINT_MAX (0x7FF)
|
|
#define LIT_UTF8_3_BYTE_CODE_POINT_MIN (0x800)
|
|
#define LIT_UTF8_3_BYTE_CODE_POINT_MAX (LIT_UTF16_CODE_UNIT_MAX)
|
|
#define LIT_UTF8_4_BYTE_CODE_POINT_MIN (0x10000)
|
|
#define LIT_UTF8_4_BYTE_CODE_POINT_MAX (LIT_UNICODE_CODE_POINT_MAX)
|
|
|
|
/**
|
|
* Differnce between byte count needed to represent code point greater than 0xFFFF
|
|
* in common UTF-8 (4 bytes required) and CESU-8 (6 bytes required)
|
|
*/
|
|
#define LIT_UTF8_CESU8_SURROGATE_SIZE_DIF (2 * LIT_UTF8_MAX_BYTES_IN_CODE_UNIT - LIT_UTF8_MAX_BYTES_IN_CODE_POINT)
|
|
|
|
/**
|
|
* Byte values >= LIT_UTF8_FIRST_BYTE_MAX are not allowed in internal strings
|
|
*/
|
|
#define LIT_UTF8_FIRST_BYTE_MAX LIT_UTF8_5_BYTE_MARKER
|
|
|
|
/* validation */
|
|
bool lit_is_utf8_string_valid (const lit_utf8_byte_t *, lit_utf8_size_t);
|
|
bool lit_is_cesu8_string_valid (const lit_utf8_byte_t *, lit_utf8_size_t);
|
|
|
|
/* checks */
|
|
bool lit_is_code_point_utf16_low_surrogate (lit_code_point_t);
|
|
bool lit_is_code_point_utf16_high_surrogate (lit_code_point_t);
|
|
|
|
/* size */
|
|
lit_utf8_size_t lit_zt_utf8_string_size (const lit_utf8_byte_t *);
|
|
lit_utf8_size_t lit_get_codepoint_utf8_size(lit_code_point_t code_point);
|
|
|
|
/* length */
|
|
ecma_length_t lit_utf8_string_length (const lit_utf8_byte_t *, lit_utf8_size_t);
|
|
|
|
/* hash */
|
|
lit_string_hash_t lit_utf8_string_calc_hash (const lit_utf8_byte_t *, lit_utf8_size_t);
|
|
lit_string_hash_t lit_utf8_string_hash_combine (lit_string_hash_t, const lit_utf8_byte_t *, lit_utf8_size_t);
|
|
|
|
/* code unit access */
|
|
ecma_char_t lit_utf8_string_code_unit_at (const lit_utf8_byte_t *, lit_utf8_size_t, ecma_length_t);
|
|
lit_utf8_size_t lit_get_unicode_char_size_by_utf8_first_byte (lit_utf8_byte_t);
|
|
|
|
/* conversion */
|
|
lit_utf8_size_t lit_code_unit_to_utf8 (ecma_char_t, lit_utf8_byte_t *);
|
|
lit_utf8_size_t lit_code_point_to_utf8 (lit_code_point_t, lit_utf8_byte_t *);
|
|
lit_utf8_size_t lit_code_point_to_cesu8 (lit_code_point_t, lit_utf8_byte_t *);
|
|
lit_code_point_t lit_convert_surrogate_pair_to_code_point (ecma_char_t, ecma_char_t);
|
|
|
|
/* cesu-8 <=> utf-8 conversion */
|
|
lit_utf8_size_t lit_utf8_string_size_from_cesu8_string (const lit_utf8_byte_t *, lit_utf8_size_t);
|
|
lit_utf8_size_t lit_utf8_string_convert_from_cesu8 (const lit_utf8_byte_t *, lit_utf8_size_t, lit_utf8_byte_t *, lit_utf8_size_t);
|
|
|
|
bool lit_compare_utf8_strings (const lit_utf8_byte_t *, lit_utf8_size_t,
|
|
const lit_utf8_byte_t *, lit_utf8_size_t);
|
|
|
|
bool lit_compare_utf8_strings_relational (const lit_utf8_byte_t *string1_p, lit_utf8_size_t,
|
|
const lit_utf8_byte_t *string2_p, lit_utf8_size_t);
|
|
|
|
/* read code point from buffer */
|
|
lit_utf8_size_t lit_read_code_point_from_utf8 (const lit_utf8_byte_t *, lit_utf8_size_t, lit_code_point_t *);
|
|
|
|
lit_utf8_size_t lit_read_code_unit_from_utf8 (const lit_utf8_byte_t *,
|
|
ecma_char_t *);
|
|
|
|
lit_utf8_size_t lit_read_prev_code_unit_from_utf8 (const lit_utf8_byte_t *,
|
|
ecma_char_t *);
|
|
|
|
ecma_char_t lit_utf8_read_next (const lit_utf8_byte_t **);
|
|
ecma_char_t lit_utf8_read_prev (const lit_utf8_byte_t **);
|
|
ecma_char_t lit_utf8_peek_next (const lit_utf8_byte_t *);
|
|
ecma_char_t lit_utf8_peek_prev (const lit_utf8_byte_t *);
|
|
void lit_utf8_incr (const lit_utf8_byte_t **);
|
|
void lit_utf8_decr (const lit_utf8_byte_t **);
|
|
|
|
#endif /* !LIT_STRINGS_H */
|