mirror of
https://github.com/Unidata/netcdf-c.git
synced 2024-12-09 08:11:38 +08:00
398 lines
15 KiB
C
398 lines
15 KiB
C
/*
|
|
* Copyright (c) 2006-2007 Jan Behrens, FlexiGuided GmbH, Berlin
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a
|
|
* copy of this software and associated documentation files (the "Software"),
|
|
* to deal in the Software without restriction, including without limitation
|
|
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
|
|
* and/or sell copies of the Software, and to permit persons to whom the
|
|
* Software is furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in
|
|
* all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
|
|
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
|
|
* DEALINGS IN THE SOFTWARE.
|
|
*/
|
|
|
|
|
|
/*
|
|
* File name: utf8proc.h
|
|
* Version: 1.1.1
|
|
* Last changed: 2007-07-22
|
|
* Changed 2008-05-16 by rkr to add config.h and replacement for stdbool.h
|
|
* for pre-C99 compilers that don't support bool.
|
|
* Changed 2008-06-05 by rkr to add utf8proc_check(str, options) function for
|
|
* for just checking UTF-8 validity
|
|
* Description:
|
|
* Header files for libutf8proc, which is a mapping tool for UTF-8 strings
|
|
* with following features:
|
|
* - decomposing and composing of strings
|
|
* - replacing compatibility characters with their equivalents
|
|
* - stripping of "default ignorable characters"
|
|
* like SOFT-HYPHEN or ZERO-WIDTH-SPACE
|
|
* - folding of certain characters for string comparison
|
|
* (e.g. HYPHEN U+2010 and MINUS U+2212 to ASCII "-")
|
|
* (see "LUMP" option)
|
|
* - optional rejection of strings containing non-assigned code points
|
|
* - stripping of control characters
|
|
* - stripping of character marks (accents, etc.)
|
|
* - transformation of LF, CRLF, CR and NEL to line-feed (LF)
|
|
* or to the unicode chararacters for paragraph separation (PS)
|
|
* or line separation (LS).
|
|
* - unicode case folding (for case insensitive string comparisons)
|
|
* - rejection of illegal UTF-8 data
|
|
* (i.e. UTF-8 encoded UTF-16 surrogates)
|
|
* - support for korean hangul characters
|
|
* Unicode Version 5.0.0 is supported.
|
|
*/
|
|
|
|
|
|
#ifndef UTF8PROC_H
|
|
#define UTF8PROC_H
|
|
|
|
|
|
#include "config.h"
|
|
|
|
#include <stdlib.h>
|
|
#ifdef HAVE_STDBOOL_H
|
|
#include <stdbool.h>
|
|
#else
|
|
# if ! HAVE__BOOL
|
|
# ifdef __cplusplus
|
|
typedef bool _Bool;
|
|
# else
|
|
typedef unsigned char _Bool;
|
|
# endif
|
|
# endif
|
|
# define bool _Bool
|
|
# define false 0
|
|
# define true 1
|
|
# define __bool_true_false_are_defined 1
|
|
#endif
|
|
#include <sys/types.h>
|
|
#ifdef HAVE_INTTYPES_H
|
|
#include <inttypes.h>
|
|
#else /* HAVE_INTTYPES_H */
|
|
#include <pstdint.h>
|
|
#endif /* HAVE_INTTYPES_H */
|
|
#include <limits.h>
|
|
|
|
#ifndef HAVE_SSIZE_T
|
|
#define ssize_t int
|
|
#endif
|
|
|
|
#ifndef SSIZE_MAX
|
|
#define SSIZE_MAX (SIZE_MAX/2)
|
|
#endif
|
|
|
|
#define UTF8PROC_NULLTERM (1<<0)
|
|
#define UTF8PROC_STABLE (1<<1)
|
|
#define UTF8PROC_COMPAT (1<<2)
|
|
#define UTF8PROC_COMPOSE (1<<3)
|
|
#define UTF8PROC_DECOMPOSE (1<<4)
|
|
#define UTF8PROC_IGNORE (1<<5)
|
|
#define UTF8PROC_REJECTNA (1<<6)
|
|
#define UTF8PROC_NLF2LS (1<<7)
|
|
#define UTF8PROC_NLF2PS (1<<8)
|
|
#define UTF8PROC_NLF2LF (UTF8PROC_NLF2LS | UTF8PROC_NLF2PS)
|
|
#define UTF8PROC_STRIPCC (1<<9)
|
|
#define UTF8PROC_CASEFOLD (1<<10)
|
|
#define UTF8PROC_CHARBOUND (1<<11)
|
|
#define UTF8PROC_LUMP (1<<12)
|
|
#define UTF8PROC_STRIPMARK (1<<13)
|
|
/*
|
|
* Flags being regarded by several functions in the library:
|
|
* NULLTERM: The given UTF-8 input is NULL terminated.
|
|
* STABLE: Unicode Versioning Stability has to be respected.
|
|
* COMPAT: Compatiblity decomposition
|
|
* (i.e. formatting information is lost)
|
|
* COMPOSE: Return a result with composed characters.
|
|
* DECOMPOSE: Return a result with decomposed characters.
|
|
* IGNORE: Strip "default ignorable characters"
|
|
* REJECTNA: Return an error, if the input contains unassigned
|
|
* code points.
|
|
* NLF2LS: Indicating that NLF-sequences (LF, CRLF, CR, NEL) are
|
|
* representing a line break, and should be converted to the
|
|
* unicode character for line separation (LS).
|
|
* NLF2PS: Indicating that NLF-sequences are representing a paragraph
|
|
* break, and should be converted to the unicode character for
|
|
* paragraph separation (PS).
|
|
* NLF2LF: Indicating that the meaning of NLF-sequences is unknown.
|
|
* STRIPCC: Strips and/or convers control characters.
|
|
* NLF-sequences are transformed into space, except if one of
|
|
* the NLF2LS/PS/LF options is given.
|
|
* HorizontalTab (HT) and FormFeed (FF) are treated as a
|
|
* NLF-sequence in this case.
|
|
* All other control characters are simply removed.
|
|
* CASEFOLD: Performs unicode case folding, to be able to do a
|
|
* case-insensitive string comparison.
|
|
* CHARBOUND: Inserts 0xFF bytes at the beginning of each sequence which
|
|
* is representing a single grapheme cluster (see UAX#29).
|
|
* LUMP: Lumps certain characters together
|
|
* (e.g. HYPHEN U+2010 and MINUS U+2212 to ASCII "-").
|
|
* (See lump.txt for details.)
|
|
* If NLF2LF is set, this includes a transformation of
|
|
* paragraph and line separators to ASCII line-feed (LF).
|
|
* STRIPMARK: Strips all character markings
|
|
* (non-spacing, spacing and enclosing) (i.e. accents)
|
|
* NOTE: this option works only with COMPOSE or DECOMPOSE
|
|
*/
|
|
|
|
#define UTF8PROC_ERROR_NOMEM -1
|
|
#define UTF8PROC_ERROR_OVERFLOW -2
|
|
#define UTF8PROC_ERROR_INVALIDUTF8 -3
|
|
#define UTF8PROC_ERROR_NOTASSIGNED -4
|
|
#define UTF8PROC_ERROR_INVALIDOPTS -5
|
|
/*
|
|
* Error codes being returned by almost all functions:
|
|
* ERROR_NOMEM: Memory could not be allocated.
|
|
* ERROR_OVERFLOW: The given string is too long to be processed.
|
|
* ERROR_INVALIDUTF8: The given string is not a legal UTF-8 string.
|
|
* ERROR_NOTASSIGNED: The REJECTNA flag was set,
|
|
* and an unassigned code point was found.
|
|
* ERROR_INVALIDOPTS: Invalid options have been used.
|
|
*/
|
|
|
|
typedef int16_t utf8proc_propval_t;
|
|
typedef struct utf8proc_property_struct {
|
|
utf8proc_propval_t category;
|
|
utf8proc_propval_t combining_class;
|
|
utf8proc_propval_t bidi_class;
|
|
utf8proc_propval_t decomp_type;
|
|
const int32_t *decomp_mapping;
|
|
unsigned bidi_mirrored:1;
|
|
int32_t uppercase_mapping;
|
|
int32_t lowercase_mapping;
|
|
int32_t titlecase_mapping;
|
|
int32_t comb1st_index;
|
|
int32_t comb2nd_index;
|
|
unsigned comp_exclusion:1;
|
|
unsigned ignorable:1;
|
|
unsigned control_boundary:1;
|
|
unsigned extend:1;
|
|
const int32_t *casefold_mapping;
|
|
} utf8proc_property_t;
|
|
|
|
#define UTF8PROC_CATEGORY_LU 1
|
|
#define UTF8PROC_CATEGORY_LL 2
|
|
#define UTF8PROC_CATEGORY_LT 3
|
|
#define UTF8PROC_CATEGORY_LM 4
|
|
#define UTF8PROC_CATEGORY_LO 5
|
|
#define UTF8PROC_CATEGORY_MN 6
|
|
#define UTF8PROC_CATEGORY_MC 7
|
|
#define UTF8PROC_CATEGORY_ME 8
|
|
#define UTF8PROC_CATEGORY_ND 9
|
|
#define UTF8PROC_CATEGORY_NL 10
|
|
#define UTF8PROC_CATEGORY_NO 11
|
|
#define UTF8PROC_CATEGORY_PC 12
|
|
#define UTF8PROC_CATEGORY_PD 13
|
|
#define UTF8PROC_CATEGORY_PS 14
|
|
#define UTF8PROC_CATEGORY_PE 15
|
|
#define UTF8PROC_CATEGORY_PI 16
|
|
#define UTF8PROC_CATEGORY_PF 17
|
|
#define UTF8PROC_CATEGORY_PO 18
|
|
#define UTF8PROC_CATEGORY_SM 19
|
|
#define UTF8PROC_CATEGORY_SC 20
|
|
#define UTF8PROC_CATEGORY_SK 21
|
|
#define UTF8PROC_CATEGORY_SO 22
|
|
#define UTF8PROC_CATEGORY_ZS 23
|
|
#define UTF8PROC_CATEGORY_ZL 24
|
|
#define UTF8PROC_CATEGORY_ZP 25
|
|
#define UTF8PROC_CATEGORY_CC 26
|
|
#define UTF8PROC_CATEGORY_CF 27
|
|
#define UTF8PROC_CATEGORY_CS 28
|
|
#define UTF8PROC_CATEGORY_CO 29
|
|
#define UTF8PROC_CATEGORY_CN 30
|
|
#define UTF8PROC_BIDI_CLASS_L 1
|
|
#define UTF8PROC_BIDI_CLASS_LRE 2
|
|
#define UTF8PROC_BIDI_CLASS_LRO 3
|
|
#define UTF8PROC_BIDI_CLASS_R 4
|
|
#define UTF8PROC_BIDI_CLASS_AL 5
|
|
#define UTF8PROC_BIDI_CLASS_RLE 6
|
|
#define UTF8PROC_BIDI_CLASS_RLO 7
|
|
#define UTF8PROC_BIDI_CLASS_PDF 8
|
|
#define UTF8PROC_BIDI_CLASS_EN 9
|
|
#define UTF8PROC_BIDI_CLASS_ES 10
|
|
#define UTF8PROC_BIDI_CLASS_ET 11
|
|
#define UTF8PROC_BIDI_CLASS_AN 12
|
|
#define UTF8PROC_BIDI_CLASS_CS 13
|
|
#define UTF8PROC_BIDI_CLASS_NSM 14
|
|
#define UTF8PROC_BIDI_CLASS_BN 15
|
|
#define UTF8PROC_BIDI_CLASS_B 16
|
|
#define UTF8PROC_BIDI_CLASS_S 17
|
|
#define UTF8PROC_BIDI_CLASS_WS 18
|
|
#define UTF8PROC_BIDI_CLASS_ON 19
|
|
#define UTF8PROC_DECOMP_TYPE_FONT 1
|
|
#define UTF8PROC_DECOMP_TYPE_NOBREAK 2
|
|
#define UTF8PROC_DECOMP_TYPE_INITIAL 3
|
|
#define UTF8PROC_DECOMP_TYPE_MEDIAL 4
|
|
#define UTF8PROC_DECOMP_TYPE_FINAL 5
|
|
#define UTF8PROC_DECOMP_TYPE_ISOLATED 6
|
|
#define UTF8PROC_DECOMP_TYPE_CIRCLE 7
|
|
#define UTF8PROC_DECOMP_TYPE_SUPER 8
|
|
#define UTF8PROC_DECOMP_TYPE_SUB 9
|
|
#define UTF8PROC_DECOMP_TYPE_VERTICAL 10
|
|
#define UTF8PROC_DECOMP_TYPE_WIDE 11
|
|
#define UTF8PROC_DECOMP_TYPE_NARROW 12
|
|
#define UTF8PROC_DECOMP_TYPE_SMALL 13
|
|
#define UTF8PROC_DECOMP_TYPE_SQUARE 14
|
|
#define UTF8PROC_DECOMP_TYPE_FRACTION 15
|
|
#define UTF8PROC_DECOMP_TYPE_COMPAT 16
|
|
|
|
extern const int8_t utf8proc_utf8class[256];
|
|
|
|
const char *utf8proc_errmsg(ssize_t errcode);
|
|
/*
|
|
* Returns a static error string for the given error code.
|
|
*/
|
|
|
|
ssize_t utf8proc_iterate(const uint8_t *str, ssize_t strlen, int32_t *dst);
|
|
/*
|
|
* Reads a single char from the UTF-8 sequence being pointed to by 'str'.
|
|
* The maximum number of bytes read is 'strlen', unless 'strlen' is
|
|
* negative.
|
|
* If a valid unicode char could be read, it is stored in the variable
|
|
* being pointed to by 'dst', otherwise that variable will be set to -1.
|
|
* In case of success the number of bytes read is returned, otherwise a
|
|
* negative error code is returned.
|
|
*/
|
|
|
|
bool utf8proc_codepoint_valid(int32_t uc);
|
|
/*
|
|
* Returns 1, if the given unicode code-point is valid, otherwise 0.
|
|
*/
|
|
|
|
ssize_t utf8proc_encode_char(int32_t uc, uint8_t *dst);
|
|
/*
|
|
* Encodes the unicode char with the code point 'uc' as an UTF-8 string in
|
|
* the byte array being pointed to by 'dst'. This array has to be at least
|
|
* 4 bytes long.
|
|
* In case of success the number of bytes written is returned,
|
|
* otherwise 0.
|
|
* This function does not check if 'uc' is a valid unicode code point.
|
|
*/
|
|
|
|
const utf8proc_property_t *utf8proc_get_property(int32_t uc);
|
|
/*
|
|
* Returns a pointer to a (constant) struct containing information about
|
|
* the unicode char with the given code point 'uc'.
|
|
* If the character is not existent a pointer to a special struct is
|
|
* returned, where 'category' is a NULL pointer.
|
|
* WARNING: The parameter 'uc' has to be in the range of 0x0000 to
|
|
* 0x10FFFF, otherwise the program might crash!
|
|
*/
|
|
|
|
ssize_t utf8proc_decompose_char(
|
|
int32_t uc, int32_t *dst, ssize_t bufsize,
|
|
int options, int *last_boundclass
|
|
);
|
|
/*
|
|
* Writes a decomposition of the unicode char 'uc' into the array being
|
|
* pointed to by 'dst'.
|
|
* Following flags in the 'options' field are regarded:
|
|
* REJECTNA: an unassigned unicode code point leads to an error
|
|
* IGNORE: "default ignorable" chars are stripped
|
|
* CASEFOLD: unicode casefolding is applied
|
|
* COMPAT: replace certain characters with their
|
|
* compatibility decomposition
|
|
* CHARBOUND: Inserts 0xFF bytes before each grapheme cluster
|
|
* LUMP: lumps certain different characters together
|
|
* STRIPMARK: removes all character marks
|
|
* The pointer 'last_boundclass' has to point to an integer variable which
|
|
* is storing the last character boundary class, if the CHARBOUND option
|
|
* is used.
|
|
* In case of success the number of chars written is returned,
|
|
* in case of an error, a negative error code is returned.
|
|
* If the number of written chars would be bigger than 'bufsize',
|
|
* the buffer (up to 'bufsize') has inpredictable data, and the needed
|
|
* buffer size is returned.
|
|
* WARNING: The parameter 'uc' has to be in the range of 0x0000 to
|
|
* 0x10FFFF, otherwise the program might crash!
|
|
*/
|
|
|
|
ssize_t utf8proc_decompose(
|
|
const uint8_t *str, ssize_t strlen,
|
|
int32_t *buffer, ssize_t bufsize, int options
|
|
);
|
|
/*
|
|
* Does the same as 'utf8proc_decompose_char', but acts on a whole UTF-8
|
|
* string, and orders the decomposed sequences correctly.
|
|
* If the NULLTERM flag in 'options' is set, processing will be stopped,
|
|
* when a NULL byte is encounted, otherwise 'strlen' bytes are processed.
|
|
* The result in form of unicode code points is written into the buffer
|
|
* being pointed to by 'buffer', having the length of 'bufsize' entries.
|
|
* In case of success the number of chars written is returned,
|
|
* in case of an error, a negative error code is returned.
|
|
* If the number of written chars would be bigger than 'bufsize',
|
|
* the buffer (up to 'bufsize') has inpredictable data, and the needed
|
|
* buffer size is returned.
|
|
*/
|
|
|
|
ssize_t utf8proc_reencode(int32_t *buffer, ssize_t length, int options);
|
|
/*
|
|
* Reencodes the sequence of unicode characters given by the pointer
|
|
* 'buffer' and 'length' as UTF-8.
|
|
* The result is stored in the same memory area where the data is read.
|
|
* Following flags in the 'options' field are regarded:
|
|
* NLF2LS: converts LF, CRLF, CR and NEL into LS
|
|
* NLF2PS: converts LF, CRLF, CR and NEL into PS
|
|
* NLF2LF: converts LF, CRLF, CR and NEL into LF
|
|
* STRIPCC: strips or converts all non-affected control characters
|
|
* COMPOSE: tries to combine decomposed characters into composite
|
|
* characters
|
|
* STABLE: prohibits combining characters which would violate
|
|
* the unicode versioning stability
|
|
* In case of success the length of the resulting UTF-8 string is
|
|
* returned, otherwise a negative error code is returned.
|
|
* WARNING: The amount of free space being pointed to by 'buffer', has to
|
|
* exceed the amount of the input data by one byte, and the
|
|
* entries of the array pointed to by 'str' have to be in the
|
|
* range of 0x0000 to 0x10FFFF, otherwise the program might
|
|
* crash!
|
|
*/
|
|
|
|
ssize_t utf8proc_map(
|
|
const uint8_t *str, ssize_t strlen, uint8_t **dstptr, int options
|
|
);
|
|
/*
|
|
* Maps the given UTF-8 string being pointed to by 'str' to a new UTF-8
|
|
* string, which is allocated dynamically, and afterwards pointed to by
|
|
* the pointer being pointed to by 'dstptr'.
|
|
* If the NULLTERM flag in the 'options' field is set, the length is
|
|
* determined by a NULL terminator, otherwise the parameter 'strlen' is
|
|
* evaluated to determine the string length, but in any case the result
|
|
* will be NULL terminated (though it might contain NULL characters
|
|
* before). Other flags in the 'options' field are passed to the functions
|
|
* defined above, and regarded as described.
|
|
* In case of success the length of the new string is returned,
|
|
* otherwise a negative error code is returned.
|
|
* NOTICE: The memory of the new UTF-8 string will have been allocated with
|
|
* 'malloc', and has theirfore to be freed with 'free'.
|
|
*/
|
|
|
|
uint8_t *utf8proc_NFD(const uint8_t *str);
|
|
uint8_t *utf8proc_NFC(const uint8_t *str);
|
|
uint8_t *utf8proc_NFKD(const uint8_t *str);
|
|
uint8_t *utf8proc_NFKC(const uint8_t *str);
|
|
/*
|
|
* Returns a pointer to newly allocated memory of a NFD, NFC, NFKD or NFKC
|
|
* normalized version of the null-terminated string 'str'.
|
|
*/
|
|
|
|
ssize_t utf8proc_check(const uint8_t *str);
|
|
/*
|
|
* Just checks UTF-8 string for validity, returns 0 if valid or one of
|
|
* the negative UTF8PROC_ERROR_* codes if invalid or memory exhausted
|
|
* checking. Assumes null-terminated string str and UTF8PROC_STABLE
|
|
* option.
|
|
*/
|
|
|
|
#endif
|
|
|