mirror of
https://github.com/Unidata/netcdf-c.git
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a051cb2928
Commit 1fe43f5a6d9c628f717c5ec8aeaeae4a9adfd167 Closes #2804
816 lines
32 KiB
C
816 lines
32 KiB
C
/* -*- mode: c; c-basic-offset: 2; tab-width: 2; indent-tabs-mode: nil -*- */
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/*
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* Copyright (c) 2014-2021 Steven G. Johnson, Jiahao Chen, Peter Colberg, Tony Kelman, Scott P. Jones, and other contributors.
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* Copyright (c) 2009 Public Software Group e. V., Berlin, Germany
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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/*
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* This library contains derived data from a modified version of the
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* Unicode data files.
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*
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* The original data files are available at
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* https://www.unicode.org/Public/UNIDATA/
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*
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* Please notice the copyright statement in the file "utf8proc_data.c".
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*/
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/*
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* File name: utf8proc.c
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*
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* Description:
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* Implementation of libutf8proc.
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*/
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#include "utf8proc.h"
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#ifndef SSIZE_MAX
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#define SSIZE_MAX ((size_t)SIZE_MAX/2)
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#endif
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#ifndef UINT16_MAX
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# define UINT16_MAX 65535U
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#endif
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#include "utf8proc_data.c"
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const nc_utf8proc_int8_t nc_utf8proc_utf8class[256] = {
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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
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2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
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3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
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4, 4, 4, 4, 4, 4, 4, 4, 0, 0, 0, 0, 0, 0, 0, 0 };
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#define UTF8PROC_HANGUL_SBASE 0xAC00
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#define UTF8PROC_HANGUL_LBASE 0x1100
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#define UTF8PROC_HANGUL_VBASE 0x1161
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#define UTF8PROC_HANGUL_TBASE 0x11A7
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#define UTF8PROC_HANGUL_LCOUNT 19
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#define UTF8PROC_HANGUL_VCOUNT 21
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#define UTF8PROC_HANGUL_TCOUNT 28
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#define UTF8PROC_HANGUL_NCOUNT 588
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#define UTF8PROC_HANGUL_SCOUNT 11172
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/* END is exclusive */
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#define UTF8PROC_HANGUL_L_START 0x1100
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#define UTF8PROC_HANGUL_L_END 0x115A
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#define UTF8PROC_HANGUL_L_FILLER 0x115F
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#define UTF8PROC_HANGUL_V_START 0x1160
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#define UTF8PROC_HANGUL_V_END 0x11A3
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#define UTF8PROC_HANGUL_T_START 0x11A8
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#define UTF8PROC_HANGUL_T_END 0x11FA
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#define UTF8PROC_HANGUL_S_START 0xAC00
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#define UTF8PROC_HANGUL_S_END 0xD7A4
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/* Should follow semantic-versioning rules (semver.org) based on API
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compatibility. (Note that the shared-library version number will
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be different, being based on ABI compatibility.): */
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#define STRINGIZEx(x) #x
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#define STRINGIZE(x) STRINGIZEx(x)
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const char *nc_utf8proc_version(void) {
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return STRINGIZE(UTF8PROC_VERSION_MAJOR) "." STRINGIZE(UTF8PROC_VERSION_MINOR) "." STRINGIZE(UTF8PROC_VERSION_PATCH) "";
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}
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const char *nc_utf8proc_unicode_version(void) {
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return "15.1.0";
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}
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const char *nc_utf8proc_errmsg(nc_utf8proc_ssize_t errcode) {
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switch (errcode) {
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case UTF8PROC_ERROR_NOMEM:
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return "Memory for processing UTF-8 data could not be allocated.";
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case UTF8PROC_ERROR_OVERFLOW:
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return "UTF-8 string is too long to be processed.";
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case UTF8PROC_ERROR_INVALIDUTF8:
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return "Invalid UTF-8 string";
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case UTF8PROC_ERROR_NOTASSIGNED:
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return "Unassigned Unicode code point found in UTF-8 string.";
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case UTF8PROC_ERROR_INVALIDOPTS:
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return "Invalid options for UTF-8 processing chosen.";
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default:
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return "An unknown error occurred while processing UTF-8 data.";
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}
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}
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#define utf_cont(ch) (((ch) & 0xc0) == 0x80)
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nc_utf8proc_ssize_t nc_utf8proc_iterate(
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const nc_utf8proc_uint8_t *str, nc_utf8proc_ssize_t strlen, nc_utf8proc_int32_t *dst
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) {
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nc_utf8proc_int32_t uc;
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const nc_utf8proc_uint8_t *end;
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*dst = -1;
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if (!strlen) return 0;
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end = str + ((strlen < 0) ? 4 : strlen);
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uc = *str++;
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if (uc < 0x80) {
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*dst = uc;
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return 1;
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}
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// Must be between 0xc2 and 0xf4 inclusive to be valid
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if ((nc_utf8proc_uint32_t)(uc - 0xc2) > (0xf4-0xc2)) return UTF8PROC_ERROR_INVALIDUTF8;
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if (uc < 0xe0) { // 2-byte sequence
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// Must have valid continuation character
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if (str >= end || !utf_cont(*str)) return UTF8PROC_ERROR_INVALIDUTF8;
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*dst = ((uc & 0x1f)<<6) | (*str & 0x3f);
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return 2;
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}
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if (uc < 0xf0) { // 3-byte sequence
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if ((str + 1 >= end) || !utf_cont(*str) || !utf_cont(str[1]))
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return UTF8PROC_ERROR_INVALIDUTF8;
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// Check for surrogate chars
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if (uc == 0xed && *str > 0x9f)
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return UTF8PROC_ERROR_INVALIDUTF8;
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uc = ((uc & 0xf)<<12) | ((*str & 0x3f)<<6) | (str[1] & 0x3f);
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if (uc < 0x800)
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return UTF8PROC_ERROR_INVALIDUTF8;
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*dst = uc;
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return 3;
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}
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// 4-byte sequence
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// Must have 3 valid continuation characters
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if ((str + 2 >= end) || !utf_cont(*str) || !utf_cont(str[1]) || !utf_cont(str[2]))
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return UTF8PROC_ERROR_INVALIDUTF8;
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// Make sure in correct range (0x10000 - 0x10ffff)
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if (uc == 0xf0) {
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if (*str < 0x90) return UTF8PROC_ERROR_INVALIDUTF8;
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} else if (uc == 0xf4) {
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if (*str > 0x8f) return UTF8PROC_ERROR_INVALIDUTF8;
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}
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*dst = ((uc & 7)<<18) | ((*str & 0x3f)<<12) | ((str[1] & 0x3f)<<6) | (str[2] & 0x3f);
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return 4;
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}
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nc_utf8proc_bool nc_utf8proc_codepoint_valid(nc_utf8proc_int32_t uc) {
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return (((nc_utf8proc_uint32_t)uc)-0xd800 > 0x07ff) && ((nc_utf8proc_uint32_t)uc < 0x110000);
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}
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nc_utf8proc_ssize_t nc_utf8proc_encode_char(nc_utf8proc_int32_t uc, nc_utf8proc_uint8_t *dst) {
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if (uc < 0x00) {
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return 0;
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} else if (uc < 0x80) {
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dst[0] = (nc_utf8proc_uint8_t) uc;
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return 1;
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} else if (uc < 0x800) {
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dst[0] = (nc_utf8proc_uint8_t)(0xC0 + (uc >> 6));
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dst[1] = (nc_utf8proc_uint8_t)(0x80 + (uc & 0x3F));
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return 2;
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// Note: we allow encoding 0xd800-0xdfff here, so as not to change
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// the API, however, these are actually invalid in UTF-8
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} else if (uc < 0x10000) {
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dst[0] = (nc_utf8proc_uint8_t)(0xE0 + (uc >> 12));
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dst[1] = (nc_utf8proc_uint8_t)(0x80 + ((uc >> 6) & 0x3F));
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dst[2] = (nc_utf8proc_uint8_t)(0x80 + (uc & 0x3F));
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return 3;
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} else if (uc < 0x110000) {
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dst[0] = (nc_utf8proc_uint8_t)(0xF0 + (uc >> 18));
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dst[1] = (nc_utf8proc_uint8_t)(0x80 + ((uc >> 12) & 0x3F));
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dst[2] = (nc_utf8proc_uint8_t)(0x80 + ((uc >> 6) & 0x3F));
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dst[3] = (nc_utf8proc_uint8_t)(0x80 + (uc & 0x3F));
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return 4;
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} else return 0;
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}
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/* internal version used for inserting 0xff bytes between graphemes */
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static nc_utf8proc_ssize_t nc_charbound_encode_char(nc_utf8proc_int32_t uc, nc_utf8proc_uint8_t *dst) {
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if (uc < 0x00) {
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if (uc == -1) { /* internal value used for grapheme breaks */
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dst[0] = (nc_utf8proc_uint8_t)0xFF;
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return 1;
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}
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return 0;
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} else if (uc < 0x80) {
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dst[0] = (nc_utf8proc_uint8_t)uc;
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return 1;
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} else if (uc < 0x800) {
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dst[0] = (nc_utf8proc_uint8_t)(0xC0 + (uc >> 6));
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dst[1] = (nc_utf8proc_uint8_t)(0x80 + (uc & 0x3F));
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return 2;
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} else if (uc < 0x10000) {
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dst[0] = (nc_utf8proc_uint8_t)(0xE0 + (uc >> 12));
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dst[1] = (nc_utf8proc_uint8_t)(0x80 + ((uc >> 6) & 0x3F));
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dst[2] = (nc_utf8proc_uint8_t)(0x80 + (uc & 0x3F));
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return 3;
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} else if (uc < 0x110000) {
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dst[0] = (nc_utf8proc_uint8_t)(0xF0 + (uc >> 18));
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dst[1] = (nc_utf8proc_uint8_t)(0x80 + ((uc >> 12) & 0x3F));
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dst[2] = (nc_utf8proc_uint8_t)(0x80 + ((uc >> 6) & 0x3F));
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dst[3] = (nc_utf8proc_uint8_t)(0x80 + (uc & 0x3F));
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return 4;
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} else return 0;
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}
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/* internal "unsafe" version that does not check whether uc is in range */
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static const nc_utf8proc_property_t *nc_unsafe_get_property(nc_utf8proc_int32_t uc) {
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/* ASSERT: uc >= 0 && uc < 0x110000 */
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return nc_utf8proc_properties + (
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nc_utf8proc_stage2table[
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nc_utf8proc_stage1table[uc >> 8] + (uc & 0xFF)
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]
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);
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}
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const nc_utf8proc_property_t *nc_utf8proc_get_property(nc_utf8proc_int32_t uc) {
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return uc < 0 || uc >= 0x110000 ? nc_utf8proc_properties : nc_unsafe_get_property(uc);
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}
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/* return whether there is a grapheme break between boundclasses lbc and tbc
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(according to the definition of extended grapheme clusters)
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Rule numbering refers to TR29 Version 29 (Unicode 9.0.0):
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http://www.unicode.org/reports/tr29/tr29-29.html
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CAVEATS:
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Please note that evaluation of GB10 (grapheme breaks between emoji zwj sequences)
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and GB 12/13 (regional indicator code points) require knowledge of previous characters
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and are thus not handled by this function. This may result in an incorrect break before
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an E_Modifier class codepoint and an incorrectly missing break between two
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REGIONAL_INDICATOR class code points if such support does not exist in the caller.
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See the special support in grapheme_break_extended, for required bookkeeping by the caller.
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*/
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static nc_utf8proc_bool nc_grapheme_break_simple(int lbc, int tbc) {
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return
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(lbc == UTF8PROC_BOUNDCLASS_START) ? true : // GB1
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(lbc == UTF8PROC_BOUNDCLASS_CR && // GB3
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tbc == UTF8PROC_BOUNDCLASS_LF) ? false : // ---
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(lbc >= UTF8PROC_BOUNDCLASS_CR && lbc <= UTF8PROC_BOUNDCLASS_CONTROL) ? true : // GB4
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(tbc >= UTF8PROC_BOUNDCLASS_CR && tbc <= UTF8PROC_BOUNDCLASS_CONTROL) ? true : // GB5
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(lbc == UTF8PROC_BOUNDCLASS_L && // GB6
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(tbc == UTF8PROC_BOUNDCLASS_L || // ---
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tbc == UTF8PROC_BOUNDCLASS_V || // ---
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tbc == UTF8PROC_BOUNDCLASS_LV || // ---
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tbc == UTF8PROC_BOUNDCLASS_LVT)) ? false : // ---
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((lbc == UTF8PROC_BOUNDCLASS_LV || // GB7
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lbc == UTF8PROC_BOUNDCLASS_V) && // ---
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(tbc == UTF8PROC_BOUNDCLASS_V || // ---
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tbc == UTF8PROC_BOUNDCLASS_T)) ? false : // ---
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((lbc == UTF8PROC_BOUNDCLASS_LVT || // GB8
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lbc == UTF8PROC_BOUNDCLASS_T) && // ---
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tbc == UTF8PROC_BOUNDCLASS_T) ? false : // ---
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(tbc == UTF8PROC_BOUNDCLASS_EXTEND || // GB9
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tbc == UTF8PROC_BOUNDCLASS_ZWJ || // ---
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tbc == UTF8PROC_BOUNDCLASS_SPACINGMARK || // GB9a
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lbc == UTF8PROC_BOUNDCLASS_PREPEND) ? false : // GB9b
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(lbc == UTF8PROC_BOUNDCLASS_E_ZWG && // GB11 (requires additional handling below)
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tbc == UTF8PROC_BOUNDCLASS_EXTENDED_PICTOGRAPHIC) ? false : // ----
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(lbc == UTF8PROC_BOUNDCLASS_REGIONAL_INDICATOR && // GB12/13 (requires additional handling below)
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tbc == UTF8PROC_BOUNDCLASS_REGIONAL_INDICATOR) ? false : // ----
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true; // GB999
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}
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static nc_utf8proc_bool nc_grapheme_break_extended(int lbc, int tbc, int licb, int ticb, nc_utf8proc_int32_t *state)
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{
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if (state) {
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int state_bc, state_icb; /* boundclass and indic_conjunct_break state */
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if (*state == 0) { /* state initialization */
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state_bc = lbc;
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state_icb = licb == UTF8PROC_INDIC_CONJUNCT_BREAK_CONSONANT ? licb : UTF8PROC_INDIC_CONJUNCT_BREAK_NONE;
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}
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else { /* lbc and licb are already encoded in *state */
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state_bc = *state & 0xff; // 1st byte of state is bound class
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state_icb = *state >> 8; // 2nd byte of state is indic conjunct break
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}
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nc_utf8proc_bool break_permitted = nc_grapheme_break_simple(state_bc, tbc) &&
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!(state_icb == UTF8PROC_INDIC_CONJUNCT_BREAK_LINKER
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&& ticb == UTF8PROC_INDIC_CONJUNCT_BREAK_CONSONANT); // GB9c
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// Special support for GB9c. Don't break between two consonants
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// separated 1+ linker characters and 0+ extend characters in any order.
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// After a consonant, we enter LINKER state after at least one linker.
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if (ticb == UTF8PROC_INDIC_CONJUNCT_BREAK_CONSONANT
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|| state_icb == UTF8PROC_INDIC_CONJUNCT_BREAK_CONSONANT
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|| state_icb == UTF8PROC_INDIC_CONJUNCT_BREAK_EXTEND)
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state_icb = ticb;
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else if (state_icb == UTF8PROC_INDIC_CONJUNCT_BREAK_LINKER)
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state_icb = ticb == UTF8PROC_INDIC_CONJUNCT_BREAK_EXTEND ?
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UTF8PROC_INDIC_CONJUNCT_BREAK_LINKER : ticb;
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// Special support for GB 12/13 made possible by GB999. After two RI
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// class codepoints we want to force a break. Do this by resetting the
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// second RI's bound class to UTF8PROC_BOUNDCLASS_OTHER, to force a break
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// after that character according to GB999 (unless of course such a break is
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// forbidden by a different rule such as GB9).
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if (state_bc == tbc && tbc == UTF8PROC_BOUNDCLASS_REGIONAL_INDICATOR)
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state_bc = UTF8PROC_BOUNDCLASS_OTHER;
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// Special support for GB11 (emoji extend* zwj / emoji)
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else if (state_bc == UTF8PROC_BOUNDCLASS_EXTENDED_PICTOGRAPHIC) {
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if (tbc == UTF8PROC_BOUNDCLASS_EXTEND) // fold EXTEND codepoints into emoji
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state_bc = UTF8PROC_BOUNDCLASS_EXTENDED_PICTOGRAPHIC;
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else if (tbc == UTF8PROC_BOUNDCLASS_ZWJ)
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state_bc = UTF8PROC_BOUNDCLASS_E_ZWG; // state to record emoji+zwg combo
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else
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state_bc = tbc;
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}
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else
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state_bc = tbc;
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*state = state_bc + (state_icb << 8);
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return break_permitted;
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}
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else
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return nc_grapheme_break_simple(lbc, tbc);
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}
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nc_utf8proc_bool nc_utf8proc_grapheme_break_stateful(
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nc_utf8proc_int32_t c1, nc_utf8proc_int32_t c2, nc_utf8proc_int32_t *state) {
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const nc_utf8proc_property_t *p1 = nc_utf8proc_get_property(c1);
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const nc_utf8proc_property_t *p2 = nc_utf8proc_get_property(c2);
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return nc_grapheme_break_extended(p1->boundclass,
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p2->boundclass,
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p1->indic_conjunct_break,
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p2->indic_conjunct_break,
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state);
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}
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nc_utf8proc_bool nc_utf8proc_grapheme_break(
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nc_utf8proc_int32_t c1, nc_utf8proc_int32_t c2) {
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return nc_utf8proc_grapheme_break_stateful(c1, c2, NULL);
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}
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static nc_utf8proc_int32_t nc_seqindex_decode_entry(const nc_utf8proc_uint16_t **entry)
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{
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nc_utf8proc_int32_t entry_cp = **entry;
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if ((entry_cp & 0xF800) == 0xD800) {
|
|
*entry = *entry + 1;
|
|
entry_cp = ((entry_cp & 0x03FF) << 10) | (**entry & 0x03FF);
|
|
entry_cp += 0x10000;
|
|
}
|
|
return entry_cp;
|
|
}
|
|
|
|
static nc_utf8proc_int32_t nc_seqindex_decode_index(const nc_utf8proc_uint32_t seqindex)
|
|
{
|
|
const nc_utf8proc_uint16_t *entry = &nc_utf8proc_sequences[seqindex];
|
|
return nc_seqindex_decode_entry(&entry);
|
|
}
|
|
|
|
static nc_utf8proc_ssize_t nc_seqindex_write_char_decomposed(nc_utf8proc_uint16_t seqindex, nc_utf8proc_int32_t *dst, nc_utf8proc_ssize_t bufsize, nc_utf8proc_option_t options, int *last_boundclass) {
|
|
nc_utf8proc_ssize_t written = 0;
|
|
const nc_utf8proc_uint16_t *entry = &nc_utf8proc_sequences[seqindex & 0x3FFF];
|
|
int len = seqindex >> 14;
|
|
if (len >= 3) {
|
|
len = *entry;
|
|
entry++;
|
|
}
|
|
for (; len >= 0; entry++, len--) {
|
|
nc_utf8proc_int32_t entry_cp = nc_seqindex_decode_entry(&entry);
|
|
|
|
written += nc_utf8proc_decompose_char(entry_cp, dst+written,
|
|
(bufsize > written) ? (bufsize - written) : 0, options,
|
|
last_boundclass);
|
|
if (written < 0) return UTF8PROC_ERROR_OVERFLOW;
|
|
}
|
|
return written;
|
|
}
|
|
|
|
nc_utf8proc_int32_t nc_utf8proc_tolower(nc_utf8proc_int32_t c)
|
|
{
|
|
nc_utf8proc_int32_t cl = nc_utf8proc_get_property(c)->lowercase_seqindex;
|
|
return cl != UINT16_MAX ? nc_seqindex_decode_index((nc_utf8proc_uint32_t)cl) : c;
|
|
}
|
|
|
|
nc_utf8proc_int32_t nc_utf8proc_toupper(nc_utf8proc_int32_t c)
|
|
{
|
|
nc_utf8proc_int32_t cu = nc_utf8proc_get_property(c)->uppercase_seqindex;
|
|
return cu != UINT16_MAX ? nc_seqindex_decode_index((nc_utf8proc_uint32_t)cu) : c;
|
|
}
|
|
|
|
nc_utf8proc_int32_t nc_utf8proc_totitle(nc_utf8proc_int32_t c)
|
|
{
|
|
nc_utf8proc_int32_t cu = nc_utf8proc_get_property(c)->titlecase_seqindex;
|
|
return cu != UINT16_MAX ? nc_seqindex_decode_index((nc_utf8proc_uint32_t)cu) : c;
|
|
}
|
|
|
|
int nc_utf8proc_islower(nc_utf8proc_int32_t c)
|
|
{
|
|
const nc_utf8proc_property_t *p = nc_utf8proc_get_property(c);
|
|
return p->lowercase_seqindex != p->uppercase_seqindex && p->lowercase_seqindex == UINT16_MAX;
|
|
}
|
|
|
|
int nc_utf8proc_isupper(nc_utf8proc_int32_t c)
|
|
{
|
|
const nc_utf8proc_property_t *p = nc_utf8proc_get_property(c);
|
|
return p->lowercase_seqindex != p->uppercase_seqindex && p->uppercase_seqindex == UINT16_MAX && p->category != UTF8PROC_CATEGORY_LT;
|
|
}
|
|
|
|
/* return a character width analogous to wcwidth (except portable and
|
|
hopefully less buggy than most system wcwidth functions). */
|
|
int nc_utf8proc_charwidth(nc_utf8proc_int32_t c) {
|
|
return nc_utf8proc_get_property(c)->charwidth;
|
|
}
|
|
|
|
nc_utf8proc_category_t nc_utf8proc_category(nc_utf8proc_int32_t c) {
|
|
return (nc_utf8proc_category_t) nc_utf8proc_get_property(c)->category;
|
|
}
|
|
|
|
const char *nc_utf8proc_category_string(nc_utf8proc_int32_t c) {
|
|
static const char s[][3] = {"Cn","Lu","Ll","Lt","Lm","Lo","Mn","Mc","Me","Nd","Nl","No","Pc","Pd","Ps","Pe","Pi","Pf","Po","Sm","Sc","Sk","So","Zs","Zl","Zp","Cc","Cf","Cs","Co"};
|
|
return s[nc_utf8proc_category(c)];
|
|
}
|
|
|
|
#define nc_utf8proc_decompose_lump(replacement_uc) \
|
|
return nc_utf8proc_decompose_char((replacement_uc), dst, bufsize, \
|
|
options & ~(unsigned int)UTF8PROC_LUMP, last_boundclass)
|
|
|
|
nc_utf8proc_ssize_t nc_utf8proc_decompose_char(nc_utf8proc_int32_t uc, nc_utf8proc_int32_t *dst, nc_utf8proc_ssize_t bufsize, nc_utf8proc_option_t options, int *last_boundclass) {
|
|
const nc_utf8proc_property_t *property;
|
|
nc_utf8proc_propval_t category;
|
|
nc_utf8proc_int32_t hangul_sindex;
|
|
if (uc < 0 || uc >= 0x110000) return UTF8PROC_ERROR_NOTASSIGNED;
|
|
property = nc_unsafe_get_property(uc);
|
|
category = property->category;
|
|
hangul_sindex = uc - UTF8PROC_HANGUL_SBASE;
|
|
if (options & (UTF8PROC_COMPOSE|UTF8PROC_DECOMPOSE)) {
|
|
if (hangul_sindex >= 0 && hangul_sindex < UTF8PROC_HANGUL_SCOUNT) {
|
|
nc_utf8proc_int32_t hangul_tindex;
|
|
if (bufsize >= 1) {
|
|
dst[0] = UTF8PROC_HANGUL_LBASE +
|
|
hangul_sindex / UTF8PROC_HANGUL_NCOUNT;
|
|
if (bufsize >= 2) dst[1] = UTF8PROC_HANGUL_VBASE +
|
|
(hangul_sindex % UTF8PROC_HANGUL_NCOUNT) / UTF8PROC_HANGUL_TCOUNT;
|
|
}
|
|
hangul_tindex = hangul_sindex % UTF8PROC_HANGUL_TCOUNT;
|
|
if (!hangul_tindex) return 2;
|
|
if (bufsize >= 3) dst[2] = UTF8PROC_HANGUL_TBASE + hangul_tindex;
|
|
return 3;
|
|
}
|
|
}
|
|
if (options & UTF8PROC_REJECTNA) {
|
|
if (!category) return UTF8PROC_ERROR_NOTASSIGNED;
|
|
}
|
|
if (options & UTF8PROC_IGNORE) {
|
|
if (property->ignorable) return 0;
|
|
}
|
|
if (options & UTF8PROC_STRIPNA) {
|
|
if (!category) return 0;
|
|
}
|
|
if (options & UTF8PROC_LUMP) {
|
|
if (category == UTF8PROC_CATEGORY_ZS) nc_utf8proc_decompose_lump(0x0020);
|
|
if (uc == 0x2018 || uc == 0x2019 || uc == 0x02BC || uc == 0x02C8)
|
|
nc_utf8proc_decompose_lump(0x0027);
|
|
if (category == UTF8PROC_CATEGORY_PD || uc == 0x2212)
|
|
nc_utf8proc_decompose_lump(0x002D);
|
|
if (uc == 0x2044 || uc == 0x2215) nc_utf8proc_decompose_lump(0x002F);
|
|
if (uc == 0x2236) nc_utf8proc_decompose_lump(0x003A);
|
|
if (uc == 0x2039 || uc == 0x2329 || uc == 0x3008)
|
|
nc_utf8proc_decompose_lump(0x003C);
|
|
if (uc == 0x203A || uc == 0x232A || uc == 0x3009)
|
|
nc_utf8proc_decompose_lump(0x003E);
|
|
if (uc == 0x2216) nc_utf8proc_decompose_lump(0x005C);
|
|
if (uc == 0x02C4 || uc == 0x02C6 || uc == 0x2038 || uc == 0x2303)
|
|
nc_utf8proc_decompose_lump(0x005E);
|
|
if (category == UTF8PROC_CATEGORY_PC || uc == 0x02CD)
|
|
nc_utf8proc_decompose_lump(0x005F);
|
|
if (uc == 0x02CB) nc_utf8proc_decompose_lump(0x0060);
|
|
if (uc == 0x2223) nc_utf8proc_decompose_lump(0x007C);
|
|
if (uc == 0x223C) nc_utf8proc_decompose_lump(0x007E);
|
|
if ((options & UTF8PROC_NLF2LS) && (options & UTF8PROC_NLF2PS)) {
|
|
if (category == UTF8PROC_CATEGORY_ZL ||
|
|
category == UTF8PROC_CATEGORY_ZP)
|
|
nc_utf8proc_decompose_lump(0x000A);
|
|
}
|
|
}
|
|
if (options & UTF8PROC_STRIPMARK) {
|
|
if (category == UTF8PROC_CATEGORY_MN ||
|
|
category == UTF8PROC_CATEGORY_MC ||
|
|
category == UTF8PROC_CATEGORY_ME) return 0;
|
|
}
|
|
if (options & UTF8PROC_CASEFOLD) {
|
|
if (property->casefold_seqindex != UINT16_MAX) {
|
|
return nc_seqindex_write_char_decomposed(property->casefold_seqindex, dst, bufsize, options, last_boundclass);
|
|
}
|
|
}
|
|
if (options & (UTF8PROC_COMPOSE|UTF8PROC_DECOMPOSE)) {
|
|
if (property->decomp_seqindex != UINT16_MAX &&
|
|
(!property->decomp_type || (options & UTF8PROC_COMPAT))) {
|
|
return nc_seqindex_write_char_decomposed(property->decomp_seqindex, dst, bufsize, options, last_boundclass);
|
|
}
|
|
}
|
|
if (options & UTF8PROC_CHARBOUND) {
|
|
nc_utf8proc_bool boundary;
|
|
boundary = nc_grapheme_break_extended(0, property->boundclass, 0, property->indic_conjunct_break,
|
|
last_boundclass);
|
|
if (boundary) {
|
|
if (bufsize >= 1) dst[0] = -1; /* sentinel value for grapheme break */
|
|
if (bufsize >= 2) dst[1] = uc;
|
|
return 2;
|
|
}
|
|
}
|
|
if (bufsize >= 1) *dst = uc;
|
|
return 1;
|
|
}
|
|
|
|
nc_utf8proc_ssize_t nc_utf8proc_decompose(
|
|
const nc_utf8proc_uint8_t *str, nc_utf8proc_ssize_t strlen,
|
|
nc_utf8proc_int32_t *buffer, nc_utf8proc_ssize_t bufsize, nc_utf8proc_option_t options
|
|
) {
|
|
return nc_utf8proc_decompose_custom(str, strlen, buffer, bufsize, options, NULL, NULL);
|
|
}
|
|
|
|
nc_utf8proc_ssize_t nc_utf8proc_decompose_custom(
|
|
const nc_utf8proc_uint8_t *str, nc_utf8proc_ssize_t strlen,
|
|
nc_utf8proc_int32_t *buffer, nc_utf8proc_ssize_t bufsize, nc_utf8proc_option_t options,
|
|
nc_utf8proc_custom_func custom_func, void *custom_data
|
|
) {
|
|
/* strlen will be ignored, if UTF8PROC_NULLTERM is set in options */
|
|
nc_utf8proc_ssize_t wpos = 0;
|
|
if ((options & UTF8PROC_COMPOSE) && (options & UTF8PROC_DECOMPOSE))
|
|
return UTF8PROC_ERROR_INVALIDOPTS;
|
|
if ((options & UTF8PROC_STRIPMARK) &&
|
|
!(options & UTF8PROC_COMPOSE) && !(options & UTF8PROC_DECOMPOSE))
|
|
return UTF8PROC_ERROR_INVALIDOPTS;
|
|
{
|
|
nc_utf8proc_int32_t uc;
|
|
nc_utf8proc_ssize_t rpos = 0;
|
|
nc_utf8proc_ssize_t decomp_result;
|
|
int boundclass = UTF8PROC_BOUNDCLASS_START;
|
|
while (1) {
|
|
if (options & UTF8PROC_NULLTERM) {
|
|
rpos += nc_utf8proc_iterate(str + rpos, -1, &uc);
|
|
/* checking of return value is not necessary,
|
|
as 'uc' is < 0 in case of error */
|
|
if (uc < 0) return UTF8PROC_ERROR_INVALIDUTF8;
|
|
if (rpos < 0) return UTF8PROC_ERROR_OVERFLOW;
|
|
if (uc == 0) break;
|
|
} else {
|
|
if (rpos >= strlen) break;
|
|
rpos += nc_utf8proc_iterate(str + rpos, strlen - rpos, &uc);
|
|
if (uc < 0) return UTF8PROC_ERROR_INVALIDUTF8;
|
|
}
|
|
if (custom_func != NULL) {
|
|
uc = custom_func(uc, custom_data); /* user-specified custom mapping */
|
|
}
|
|
decomp_result = nc_utf8proc_decompose_char(
|
|
uc, buffer + wpos, (bufsize > wpos) ? (bufsize - wpos) : 0, options,
|
|
&boundclass
|
|
);
|
|
if (decomp_result < 0) return decomp_result;
|
|
wpos += decomp_result;
|
|
/* prohibiting integer overflows due to too long strings: */
|
|
if (wpos < 0 ||
|
|
wpos > (nc_utf8proc_ssize_t)(SSIZE_MAX/sizeof(nc_utf8proc_int32_t)/2))
|
|
return UTF8PROC_ERROR_OVERFLOW;
|
|
}
|
|
}
|
|
if ((options & (UTF8PROC_COMPOSE|UTF8PROC_DECOMPOSE)) && bufsize >= wpos) {
|
|
nc_utf8proc_ssize_t pos = 0;
|
|
while (pos < wpos-1) {
|
|
nc_utf8proc_int32_t uc1, uc2;
|
|
const nc_utf8proc_property_t *property1, *property2;
|
|
uc1 = buffer[pos];
|
|
uc2 = buffer[pos+1];
|
|
property1 = nc_unsafe_get_property(uc1);
|
|
property2 = nc_unsafe_get_property(uc2);
|
|
if (property1->combining_class > property2->combining_class &&
|
|
property2->combining_class > 0) {
|
|
buffer[pos] = uc2;
|
|
buffer[pos+1] = uc1;
|
|
if (pos > 0) pos--; else pos++;
|
|
} else {
|
|
pos++;
|
|
}
|
|
}
|
|
}
|
|
return wpos;
|
|
}
|
|
|
|
nc_utf8proc_ssize_t nc_utf8proc_normalize_utf32(nc_utf8proc_int32_t *buffer, nc_utf8proc_ssize_t length, nc_utf8proc_option_t options) {
|
|
/* UTF8PROC_NULLTERM option will be ignored, 'length' is never ignored */
|
|
if (options & (UTF8PROC_NLF2LS | UTF8PROC_NLF2PS | UTF8PROC_STRIPCC)) {
|
|
nc_utf8proc_ssize_t rpos;
|
|
nc_utf8proc_ssize_t wpos = 0;
|
|
nc_utf8proc_int32_t uc;
|
|
for (rpos = 0; rpos < length; rpos++) {
|
|
uc = buffer[rpos];
|
|
if (uc == 0x000D && rpos < length-1 && buffer[rpos+1] == 0x000A) rpos++;
|
|
if (uc == 0x000A || uc == 0x000D || uc == 0x0085 ||
|
|
((options & UTF8PROC_STRIPCC) && (uc == 0x000B || uc == 0x000C))) {
|
|
if (options & UTF8PROC_NLF2LS) {
|
|
if (options & UTF8PROC_NLF2PS) {
|
|
buffer[wpos++] = 0x000A;
|
|
} else {
|
|
buffer[wpos++] = 0x2028;
|
|
}
|
|
} else {
|
|
if (options & UTF8PROC_NLF2PS) {
|
|
buffer[wpos++] = 0x2029;
|
|
} else {
|
|
buffer[wpos++] = 0x0020;
|
|
}
|
|
}
|
|
} else if ((options & UTF8PROC_STRIPCC) &&
|
|
(uc < 0x0020 || (uc >= 0x007F && uc < 0x00A0))) {
|
|
if (uc == 0x0009) buffer[wpos++] = 0x0020;
|
|
} else {
|
|
buffer[wpos++] = uc;
|
|
}
|
|
}
|
|
length = wpos;
|
|
}
|
|
if (options & UTF8PROC_COMPOSE) {
|
|
nc_utf8proc_int32_t *starter = NULL;
|
|
nc_utf8proc_int32_t current_char;
|
|
const nc_utf8proc_property_t *starter_property = NULL, *current_property;
|
|
nc_utf8proc_propval_t max_combining_class = -1;
|
|
nc_utf8proc_ssize_t rpos;
|
|
nc_utf8proc_ssize_t wpos = 0;
|
|
nc_utf8proc_int32_t composition;
|
|
for (rpos = 0; rpos < length; rpos++) {
|
|
current_char = buffer[rpos];
|
|
current_property = nc_unsafe_get_property(current_char);
|
|
if (starter && current_property->combining_class > max_combining_class) {
|
|
/* combination perhaps possible */
|
|
nc_utf8proc_int32_t hangul_lindex;
|
|
nc_utf8proc_int32_t hangul_sindex;
|
|
hangul_lindex = *starter - UTF8PROC_HANGUL_LBASE;
|
|
if (hangul_lindex >= 0 && hangul_lindex < UTF8PROC_HANGUL_LCOUNT) {
|
|
nc_utf8proc_int32_t hangul_vindex;
|
|
hangul_vindex = current_char - UTF8PROC_HANGUL_VBASE;
|
|
if (hangul_vindex >= 0 && hangul_vindex < UTF8PROC_HANGUL_VCOUNT) {
|
|
*starter = UTF8PROC_HANGUL_SBASE +
|
|
(hangul_lindex * UTF8PROC_HANGUL_VCOUNT + hangul_vindex) *
|
|
UTF8PROC_HANGUL_TCOUNT;
|
|
starter_property = NULL;
|
|
continue;
|
|
}
|
|
}
|
|
hangul_sindex = *starter - UTF8PROC_HANGUL_SBASE;
|
|
if (hangul_sindex >= 0 && hangul_sindex < UTF8PROC_HANGUL_SCOUNT &&
|
|
(hangul_sindex % UTF8PROC_HANGUL_TCOUNT) == 0) {
|
|
nc_utf8proc_int32_t hangul_tindex;
|
|
hangul_tindex = current_char - UTF8PROC_HANGUL_TBASE;
|
|
if (hangul_tindex >= 0 && hangul_tindex < UTF8PROC_HANGUL_TCOUNT) {
|
|
*starter += hangul_tindex;
|
|
starter_property = NULL;
|
|
continue;
|
|
}
|
|
}
|
|
if (!starter_property) {
|
|
starter_property = nc_unsafe_get_property(*starter);
|
|
}
|
|
if (starter_property->comb_index < 0x8000 &&
|
|
current_property->comb_index != UINT16_MAX &&
|
|
current_property->comb_index >= 0x8000) {
|
|
int sidx = starter_property->comb_index;
|
|
int idx = current_property->comb_index & 0x3FFF;
|
|
if (idx >= nc_utf8proc_combinations[sidx] && idx <= nc_utf8proc_combinations[sidx + 1] ) {
|
|
idx += sidx + 2 - nc_utf8proc_combinations[sidx];
|
|
if (current_property->comb_index & 0x4000) {
|
|
composition = (nc_utf8proc_combinations[idx] << 16) | nc_utf8proc_combinations[idx+1];
|
|
} else
|
|
composition = nc_utf8proc_combinations[idx];
|
|
|
|
if (composition > 0 && (!(options & UTF8PROC_STABLE) ||
|
|
!(nc_unsafe_get_property(composition)->comp_exclusion))) {
|
|
*starter = composition;
|
|
starter_property = NULL;
|
|
continue;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
buffer[wpos] = current_char;
|
|
if (current_property->combining_class) {
|
|
if (current_property->combining_class > max_combining_class) {
|
|
max_combining_class = current_property->combining_class;
|
|
}
|
|
} else {
|
|
starter = buffer + wpos;
|
|
starter_property = NULL;
|
|
max_combining_class = -1;
|
|
}
|
|
wpos++;
|
|
}
|
|
length = wpos;
|
|
}
|
|
return length;
|
|
}
|
|
|
|
nc_utf8proc_ssize_t nc_utf8proc_reencode(nc_utf8proc_int32_t *buffer, nc_utf8proc_ssize_t length, nc_utf8proc_option_t options) {
|
|
/* UTF8PROC_NULLTERM option will be ignored, 'length' is never ignored
|
|
ASSERT: 'buffer' has one spare byte of free space at the end! */
|
|
length = nc_utf8proc_normalize_utf32(buffer, length, options);
|
|
if (length < 0) return length;
|
|
{
|
|
nc_utf8proc_ssize_t rpos, wpos = 0;
|
|
nc_utf8proc_int32_t uc;
|
|
if (options & UTF8PROC_CHARBOUND) {
|
|
for (rpos = 0; rpos < length; rpos++) {
|
|
uc = buffer[rpos];
|
|
wpos += nc_charbound_encode_char(uc, ((nc_utf8proc_uint8_t *)buffer) + wpos);
|
|
}
|
|
} else {
|
|
for (rpos = 0; rpos < length; rpos++) {
|
|
uc = buffer[rpos];
|
|
wpos += nc_utf8proc_encode_char(uc, ((nc_utf8proc_uint8_t *)buffer) + wpos);
|
|
}
|
|
}
|
|
((nc_utf8proc_uint8_t *)buffer)[wpos] = 0;
|
|
return wpos;
|
|
}
|
|
}
|
|
|
|
nc_utf8proc_ssize_t nc_utf8proc_map(
|
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const nc_utf8proc_uint8_t *str, nc_utf8proc_ssize_t strlen, nc_utf8proc_uint8_t **dstptr, nc_utf8proc_option_t options
|
|
) {
|
|
return nc_utf8proc_map_custom(str, strlen, dstptr, options, NULL, NULL);
|
|
}
|
|
|
|
nc_utf8proc_ssize_t nc_utf8proc_map_custom(
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|
const nc_utf8proc_uint8_t *str, nc_utf8proc_ssize_t strlen, nc_utf8proc_uint8_t **dstptr, nc_utf8proc_option_t options,
|
|
nc_utf8proc_custom_func custom_func, void *custom_data
|
|
) {
|
|
nc_utf8proc_int32_t *buffer;
|
|
nc_utf8proc_ssize_t result;
|
|
*dstptr = NULL;
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|
result = nc_utf8proc_decompose_custom(str, strlen, NULL, 0, options, custom_func, custom_data);
|
|
if (result < 0) return result;
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|
buffer = (nc_utf8proc_int32_t *) malloc(((nc_utf8proc_size_t)result) * sizeof(nc_utf8proc_int32_t) + 1);
|
|
if (!buffer) return UTF8PROC_ERROR_NOMEM;
|
|
result = nc_utf8proc_decompose_custom(str, strlen, buffer, result, options, custom_func, custom_data);
|
|
if (result < 0) {
|
|
free(buffer);
|
|
return result;
|
|
}
|
|
result = nc_utf8proc_reencode(buffer, result, options);
|
|
if (result < 0) {
|
|
free(buffer);
|
|
return result;
|
|
}
|
|
{
|
|
nc_utf8proc_int32_t *newptr;
|
|
newptr = (nc_utf8proc_int32_t *) realloc(buffer, (size_t)result+1);
|
|
if (newptr) buffer = newptr;
|
|
}
|
|
*dstptr = (nc_utf8proc_uint8_t *)buffer;
|
|
return result;
|
|
}
|
|
|
|
nc_utf8proc_uint8_t *nc_utf8proc_NFD(const nc_utf8proc_uint8_t *str) {
|
|
nc_utf8proc_uint8_t *retval;
|
|
nc_utf8proc_map(str, 0, &retval, UTF8PROC_NULLTERM | UTF8PROC_STABLE |
|
|
UTF8PROC_DECOMPOSE);
|
|
return retval;
|
|
}
|
|
|
|
nc_utf8proc_uint8_t *nc_utf8proc_NFC(const nc_utf8proc_uint8_t *str) {
|
|
nc_utf8proc_uint8_t *retval;
|
|
nc_utf8proc_map(str, 0, &retval, UTF8PROC_NULLTERM | UTF8PROC_STABLE |
|
|
UTF8PROC_COMPOSE);
|
|
return retval;
|
|
}
|
|
|
|
nc_utf8proc_uint8_t *nc_utf8proc_NFKD(const nc_utf8proc_uint8_t *str) {
|
|
nc_utf8proc_uint8_t *retval;
|
|
nc_utf8proc_map(str, 0, &retval, UTF8PROC_NULLTERM | UTF8PROC_STABLE |
|
|
UTF8PROC_DECOMPOSE | UTF8PROC_COMPAT);
|
|
return retval;
|
|
}
|
|
|
|
nc_utf8proc_uint8_t *nc_utf8proc_NFKC(const nc_utf8proc_uint8_t *str) {
|
|
nc_utf8proc_uint8_t *retval;
|
|
nc_utf8proc_map(str, 0, &retval, UTF8PROC_NULLTERM | UTF8PROC_STABLE |
|
|
UTF8PROC_COMPOSE | UTF8PROC_COMPAT);
|
|
return retval;
|
|
}
|
|
|
|
nc_utf8proc_uint8_t *nc_utf8proc_NFKC_Casefold(const nc_utf8proc_uint8_t *str) {
|
|
nc_utf8proc_uint8_t *retval;
|
|
nc_utf8proc_map(str, 0, &retval, UTF8PROC_NULLTERM | UTF8PROC_STABLE |
|
|
UTF8PROC_COMPOSE | UTF8PROC_COMPAT | UTF8PROC_CASEFOLD | UTF8PROC_IGNORE);
|
|
return retval;
|
|
}
|