+++ /dev/null
-/* nfkc.c Unicode normalization utilities.
- * Copyright (C) 2002, 2003, 2004, 2005 Simon Josefsson
- *
- * This file is part of GNU Libidn.
- *
- * GNU Libidn is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * GNU Libidn is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with GNU Libidn; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
- */
-
-#include <stdlib.h>
-#include <string.h>
-
-#include "stringprep.h"
-
-/* This file contains functions from GLIB, including gutf8.c and
- * gunidecomp.c, all licensed under LGPL and copyright hold by:
- *
- * Copyright (C) 1999, 2000 Tom Tromey
- * Copyright 2000 Red Hat, Inc.
- */
-
-/* Hacks to make syncing with GLIB code easier. */
-#define gboolean int
-#define gchar char
-#define guchar unsigned char
-#define glong long
-#define gint int
-#define guint unsigned int
-#define gushort unsigned short
-#define gint16 int16_t
-#define guint16 uint16_t
-#define gunichar uint32_t
-#define gsize size_t
-#define gssize ssize_t
-#define g_malloc malloc
-#define g_free free
-#define GError void
-#define g_set_error(a,b,c,d) ((void) 0)
-#define g_new(struct_type, n_structs) \
- ((struct_type *) g_malloc (((gsize) sizeof (struct_type)) * ((gsize) (n_structs))))
-# if defined (__GNUC__) && !defined (__STRICT_ANSI__) && !defined (__cplusplus)
-# define G_STMT_START (void)(
-# define G_STMT_END )
-# else
-# if (defined (sun) || defined (__sun__))
-# define G_STMT_START if (1)
-# define G_STMT_END else (void)0
-# else
-# define G_STMT_START do
-# define G_STMT_END while (0)
-# endif
-# endif
-#define g_return_val_if_fail(expr,val) G_STMT_START{ (void)0; }G_STMT_END
-#define G_N_ELEMENTS(arr) (sizeof (arr) / sizeof ((arr)[0]))
-#define TRUE 1
-#define FALSE 0
-
-/* Code from GLIB gunicode.h starts here. */
-
-typedef enum
-{
- G_NORMALIZE_DEFAULT,
- G_NORMALIZE_NFD = G_NORMALIZE_DEFAULT,
- G_NORMALIZE_DEFAULT_COMPOSE,
- G_NORMALIZE_NFC = G_NORMALIZE_DEFAULT_COMPOSE,
- G_NORMALIZE_ALL,
- G_NORMALIZE_NFKD = G_NORMALIZE_ALL,
- G_NORMALIZE_ALL_COMPOSE,
- G_NORMALIZE_NFKC = G_NORMALIZE_ALL_COMPOSE
-}
-GNormalizeMode;
-
-/* Code from GLIB gutf8.c starts here. */
-
-#define UTF8_COMPUTE(Char, Mask, Len) \
- if (Char < 128) \
- { \
- Len = 1; \
- Mask = 0x7f; \
- } \
- else if ((Char & 0xe0) == 0xc0) \
- { \
- Len = 2; \
- Mask = 0x1f; \
- } \
- else if ((Char & 0xf0) == 0xe0) \
- { \
- Len = 3; \
- Mask = 0x0f; \
- } \
- else if ((Char & 0xf8) == 0xf0) \
- { \
- Len = 4; \
- Mask = 0x07; \
- } \
- else if ((Char & 0xfc) == 0xf8) \
- { \
- Len = 5; \
- Mask = 0x03; \
- } \
- else if ((Char & 0xfe) == 0xfc) \
- { \
- Len = 6; \
- Mask = 0x01; \
- } \
- else \
- Len = -1;
-
-#define UTF8_LENGTH(Char) \
- ((Char) < 0x80 ? 1 : \
- ((Char) < 0x800 ? 2 : \
- ((Char) < 0x10000 ? 3 : \
- ((Char) < 0x200000 ? 4 : \
- ((Char) < 0x4000000 ? 5 : 6)))))
-
-
-#define UTF8_GET(Result, Chars, Count, Mask, Len) \
- (Result) = (Chars)[0] & (Mask); \
- for ((Count) = 1; (Count) < (Len); ++(Count)) \
- { \
- if (((Chars)[(Count)] & 0xc0) != 0x80) \
- { \
- (Result) = -1; \
- break; \
- } \
- (Result) <<= 6; \
- (Result) |= ((Chars)[(Count)] & 0x3f); \
- }
-
-#define UNICODE_VALID(Char) \
- ((Char) < 0x110000 && \
- (((Char) & 0xFFFFF800) != 0xD800) && \
- ((Char) < 0xFDD0 || (Char) > 0xFDEF) && \
- ((Char) & 0xFFFE) != 0xFFFE)
-
-
-static const gchar utf8_skip_data[256] = {
- 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
- 1, 1, 1, 1, 1, 1, 1,
- 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
- 1, 1, 1, 1, 1, 1, 1,
- 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
- 1, 1, 1, 1, 1, 1, 1,
- 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
- 1, 1, 1, 1, 1, 1, 1,
- 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
- 1, 1, 1, 1, 1, 1, 1,
- 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
- 1, 1, 1, 1, 1, 1, 1,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2,
- 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 5,
- 5, 5, 5, 6, 6, 1, 1
-};
-
-static const gchar *const g_utf8_skip = utf8_skip_data;
-
-#define g_utf8_next_char(p) (char *)((p) + g_utf8_skip[*(guchar *)(p)])
-
-/*
- * g_utf8_strlen:
- * @p: pointer to the start of a UTF-8 encoded string.
- * @max: the maximum number of bytes to examine. If @max
- * is less than 0, then the string is assumed to be
- * nul-terminated. If @max is 0, @p will not be examined and
- * may be %NULL.
- *
- * Returns the length of the string in characters.
- *
- * Return value: the length of the string in characters
- **/
-static glong
-g_utf8_strlen (const gchar * p, gssize max)
-{
- glong len = 0;
- const gchar *start = p;
- g_return_val_if_fail (p != NULL || max == 0, 0);
-
- if (max < 0)
- {
- while (*p)
- {
- p = g_utf8_next_char (p);
- ++len;
- }
- }
- else
- {
- if (max == 0 || !*p)
- return 0;
-
- p = g_utf8_next_char (p);
-
- while (p - start < max && *p)
- {
- ++len;
- p = g_utf8_next_char (p);
- }
-
- /* only do the last len increment if we got a complete
- * char (don't count partial chars)
- */
- if (p - start == max)
- ++len;
- }
-
- return len;
-}
-
-/*
- * g_utf8_get_char:
- * @p: a pointer to Unicode character encoded as UTF-8
- *
- * Converts a sequence of bytes encoded as UTF-8 to a Unicode character.
- * If @p does not point to a valid UTF-8 encoded character, results are
- * undefined. If you are not sure that the bytes are complete
- * valid Unicode characters, you should use g_utf8_get_char_validated()
- * instead.
- *
- * Return value: the resulting character
- **/
-static gunichar
-g_utf8_get_char (const gchar * p)
-{
- int i, mask = 0, len;
- gunichar result;
- unsigned char c = (unsigned char) *p;
-
- UTF8_COMPUTE (c, mask, len);
- if (len == -1)
- return (gunichar) - 1;
- UTF8_GET (result, p, i, mask, len);
-
- return result;
-}
-
-/*
- * g_unichar_to_utf8:
- * @c: a ISO10646 character code
- * @outbuf: output buffer, must have at least 6 bytes of space.
- * If %NULL, the length will be computed and returned
- * and nothing will be written to @outbuf.
- *
- * Converts a single character to UTF-8.
- *
- * Return value: number of bytes written
- **/
-static int
-g_unichar_to_utf8 (gunichar c, gchar * outbuf)
-{
- guint len = 0;
- int first;
- int i;
-
- if (c < 0x80)
- {
- first = 0;
- len = 1;
- }
- else if (c < 0x800)
- {
- first = 0xc0;
- len = 2;
- }
- else if (c < 0x10000)
- {
- first = 0xe0;
- len = 3;
- }
- else if (c < 0x200000)
- {
- first = 0xf0;
- len = 4;
- }
- else if (c < 0x4000000)
- {
- first = 0xf8;
- len = 5;
- }
- else
- {
- first = 0xfc;
- len = 6;
- }
-
- if (outbuf)
- {
- for (i = len - 1; i > 0; --i)
- {
- outbuf[i] = (c & 0x3f) | 0x80;
- c >>= 6;
- }
- outbuf[0] = c | first;
- }
-
- return len;
-}
-
-/*
- * g_utf8_to_ucs4_fast:
- * @str: a UTF-8 encoded string
- * @len: the maximum length of @str to use. If @len < 0, then
- * the string is nul-terminated.
- * @items_written: location to store the number of characters in the
- * result, or %NULL.
- *
- * Convert a string from UTF-8 to a 32-bit fixed width
- * representation as UCS-4, assuming valid UTF-8 input.
- * This function is roughly twice as fast as g_utf8_to_ucs4()
- * but does no error checking on the input.
- *
- * Return value: a pointer to a newly allocated UCS-4 string.
- * This value must be freed with g_free().
- **/
-static gunichar *
-g_utf8_to_ucs4_fast (const gchar * str, glong len, glong * items_written)
-{
- gint j, charlen;
- gunichar *result;
- gint n_chars, i;
- const gchar *p;
-
- g_return_val_if_fail (str != NULL, NULL);
-
- p = str;
- n_chars = 0;
- if (len < 0)
- {
- while (*p)
- {
- p = g_utf8_next_char (p);
- ++n_chars;
- }
- }
- else
- {
- while (p < str + len && *p)
- {
- p = g_utf8_next_char (p);
- ++n_chars;
- }
- }
-
- result = g_new (gunichar, n_chars + 1);
- if (!result)
- return NULL;
-
- p = str;
- for (i = 0; i < n_chars; i++)
- {
- gunichar wc = ((unsigned char *) p)[0];
-
- if (wc < 0x80)
- {
- result[i] = wc;
- p++;
- }
- else
- {
- if (wc < 0xe0)
- {
- charlen = 2;
- wc &= 0x1f;
- }
- else if (wc < 0xf0)
- {
- charlen = 3;
- wc &= 0x0f;
- }
- else if (wc < 0xf8)
- {
- charlen = 4;
- wc &= 0x07;
- }
- else if (wc < 0xfc)
- {
- charlen = 5;
- wc &= 0x03;
- }
- else
- {
- charlen = 6;
- wc &= 0x01;
- }
-
- for (j = 1; j < charlen; j++)
- {
- wc <<= 6;
- wc |= ((unsigned char *) p)[j] & 0x3f;
- }
-
- result[i] = wc;
- p += charlen;
- }
- }
- result[i] = 0;
-
- if (items_written)
- *items_written = i;
-
- return result;
-}
-
-/*
- * g_ucs4_to_utf8:
- * @str: a UCS-4 encoded string
- * @len: the maximum length of @str to use. If @len < 0, then
- * the string is terminated with a 0 character.
- * @items_read: location to store number of characters read read, or %NULL.
- * @items_written: location to store number of bytes written or %NULL.
- * The value here stored does not include the trailing 0
- * byte.
- * @error: location to store the error occuring, or %NULL to ignore
- * errors. Any of the errors in #GConvertError other than
- * %G_CONVERT_ERROR_NO_CONVERSION may occur.
- *
- * Convert a string from a 32-bit fixed width representation as UCS-4.
- * to UTF-8. The result will be terminated with a 0 byte.
- *
- * Return value: a pointer to a newly allocated UTF-8 string.
- * This value must be freed with g_free(). If an
- * error occurs, %NULL will be returned and
- * @error set.
- **/
-static gchar *
-g_ucs4_to_utf8 (const gunichar * str,
- glong len,
- glong * items_read, glong * items_written, GError ** error)
-{
- gint result_length;
- gchar *result = NULL;
- gchar *p;
- gint i;
-
- result_length = 0;
- for (i = 0; len < 0 || i < len; i++)
- {
- if (!str[i])
- break;
-
- if (str[i] >= 0x80000000)
- {
- if (items_read)
- *items_read = i;
-
- g_set_error (error, G_CONVERT_ERROR,
- G_CONVERT_ERROR_ILLEGAL_SEQUENCE,
- _("Character out of range for UTF-8"));
- goto err_out;
- }
-
- result_length += UTF8_LENGTH (str[i]);
- }
-
- result = g_malloc (result_length + 1);
- if (!result)
- return NULL;
- p = result;
-
- i = 0;
- while (p < result + result_length)
- p += g_unichar_to_utf8 (str[i++], p);
-
- *p = '\0';
-
- if (items_written)
- *items_written = p - result;
-
-err_out:
- if (items_read)
- *items_read = i;
-
- return result;
-}
-
-/* Code from GLIB gunidecomp.c starts here. */
-
-#include "gunidecomp.h"
-#include "gunicomp.h"
-
-#define CC_PART1(Page, Char) \
- ((combining_class_table_part1[Page] >= G_UNICODE_MAX_TABLE_INDEX) \
- ? (combining_class_table_part1[Page] - G_UNICODE_MAX_TABLE_INDEX) \
- : (cclass_data[combining_class_table_part1[Page]][Char]))
-
-#define CC_PART2(Page, Char) \
- ((combining_class_table_part2[Page] >= G_UNICODE_MAX_TABLE_INDEX) \
- ? (combining_class_table_part2[Page] - G_UNICODE_MAX_TABLE_INDEX) \
- : (cclass_data[combining_class_table_part2[Page]][Char]))
-
-#define COMBINING_CLASS(Char) \
- (((Char) <= G_UNICODE_LAST_CHAR_PART1) \
- ? CC_PART1 ((Char) >> 8, (Char) & 0xff) \
- : (((Char) >= 0xe0000 && (Char) <= G_UNICODE_LAST_CHAR) \
- ? CC_PART2 (((Char) - 0xe0000) >> 8, (Char) & 0xff) \
- : 0))
-
-/* constants for hangul syllable [de]composition */
-#define SBase 0xAC00
-#define LBase 0x1100
-#define VBase 0x1161
-#define TBase 0x11A7
-#define LCount 19
-#define VCount 21
-#define TCount 28
-#define NCount (VCount * TCount)
-#define SCount (LCount * NCount)
-
-/*
- * g_unicode_canonical_ordering:
- * @string: a UCS-4 encoded string.
- * @len: the maximum length of @string to use.
- *
- * Computes the canonical ordering of a string in-place.
- * This rearranges decomposed characters in the string
- * according to their combining classes. See the Unicode
- * manual for more information.
- **/
-static void
-g_unicode_canonical_ordering (gunichar * string, gsize len)
-{
- gsize i;
- int swap = 1;
-
- while (swap)
- {
- int last;
- swap = 0;
- last = COMBINING_CLASS (string[0]);
- for (i = 0; i < len - 1; ++i)
- {
- int next = COMBINING_CLASS (string[i + 1]);
- if (next != 0 && last > next)
- {
- gsize j;
- /* Percolate item leftward through string. */
- for (j = i + 1; j > 0; --j)
- {
- gunichar t;
- if (COMBINING_CLASS (string[j - 1]) <= next)
- break;
- t = string[j];
- string[j] = string[j - 1];
- string[j - 1] = t;
- swap = 1;
- }
- /* We're re-entering the loop looking at the old
- character again. */
- next = last;
- }
- last = next;
- }
- }
-}
-
-/* http://www.unicode.org/unicode/reports/tr15/#Hangul
- * r should be null or have sufficient space. Calling with r == NULL will
- * only calculate the result_len; however, a buffer with space for three
- * characters will always be big enough. */
-static void
-decompose_hangul (gunichar s, gunichar * r, gsize * result_len)
-{
- gint SIndex = s - SBase;
-
- /* not a hangul syllable */
- if (SIndex < 0 || SIndex >= SCount)
- {
- if (r)
- r[0] = s;
- *result_len = 1;
- }
- else
- {
- gunichar L = LBase + SIndex / NCount;
- gunichar V = VBase + (SIndex % NCount) / TCount;
- gunichar T = TBase + SIndex % TCount;
-
- if (r)
- {
- r[0] = L;
- r[1] = V;
- }
-
- if (T != TBase)
- {
- if (r)
- r[2] = T;
- *result_len = 3;
- }
- else
- *result_len = 2;
- }
-}
-
-/* returns a pointer to a null-terminated UTF-8 string */
-static const gchar *
-find_decomposition (gunichar ch, gboolean compat)
-{
- int start = 0;
- int end = G_N_ELEMENTS (decomp_table);
-
- if (ch >= decomp_table[start].ch && ch <= decomp_table[end - 1].ch)
- {
- while (TRUE)
- {
- int half = (start + end) / 2;
- if (ch == decomp_table[half].ch)
- {
- int offset;
-
- if (compat)
- {
- offset = decomp_table[half].compat_offset;
- if (offset == G_UNICODE_NOT_PRESENT_OFFSET)
- offset = decomp_table[half].canon_offset;
- }
- else
- {
- offset = decomp_table[half].canon_offset;
- if (offset == G_UNICODE_NOT_PRESENT_OFFSET)
- return NULL;
- }
-
- return &(decomp_expansion_string[offset]);
- }
- else if (half == start)
- break;
- else if (ch > decomp_table[half].ch)
- start = half;
- else
- end = half;
- }
- }
-
- return NULL;
-}
-
-/* L,V => LV and LV,T => LVT */
-static gboolean
-combine_hangul (gunichar a, gunichar b, gunichar * result)
-{
- gint LIndex = a - LBase;
- gint SIndex = a - SBase;
-
- gint VIndex = b - VBase;
- gint TIndex = b - TBase;
-
- if (0 <= LIndex && LIndex < LCount && 0 <= VIndex && VIndex < VCount)
- {
- *result = SBase + (LIndex * VCount + VIndex) * TCount;
- return TRUE;
- }
- else if (0 <= SIndex && SIndex < SCount && (SIndex % TCount) == 0
- && 0 <= TIndex && TIndex <= TCount)
- {
- *result = a + TIndex;
- return TRUE;
- }
-
- return FALSE;
-}
-
-#define CI(Page, Char) \
- ((compose_table[Page] >= G_UNICODE_MAX_TABLE_INDEX) \
- ? (compose_table[Page] - G_UNICODE_MAX_TABLE_INDEX) \
- : (compose_data[compose_table[Page]][Char]))
-
-#define COMPOSE_INDEX(Char) \
- ((((Char) >> 8) > (COMPOSE_TABLE_LAST)) ? 0 : CI((Char) >> 8, (Char) & 0xff))
-
-static gboolean
-combine (gunichar a, gunichar b, gunichar * result)
-{
- gushort index_a, index_b;
-
- if (combine_hangul (a, b, result))
- return TRUE;
-
- index_a = COMPOSE_INDEX (a);
-
- if (index_a >= COMPOSE_FIRST_SINGLE_START && index_a < COMPOSE_SECOND_START)
- {
- if (b == compose_first_single[index_a - COMPOSE_FIRST_SINGLE_START][0])
- {
- *result =
- compose_first_single[index_a - COMPOSE_FIRST_SINGLE_START][1];
- return TRUE;
- }
- else
- return FALSE;
- }
-
- index_b = COMPOSE_INDEX (b);
-
- if (index_b >= COMPOSE_SECOND_SINGLE_START)
- {
- if (a ==
- compose_second_single[index_b - COMPOSE_SECOND_SINGLE_START][0])
- {
- *result =
- compose_second_single[index_b - COMPOSE_SECOND_SINGLE_START][1];
- return TRUE;
- }
- else
- return FALSE;
- }
-
- if (index_a >= COMPOSE_FIRST_START && index_a < COMPOSE_FIRST_SINGLE_START
- && index_b >= COMPOSE_SECOND_START
- && index_b < COMPOSE_SECOND_SINGLE_START)
- {
- gunichar res =
- compose_array[index_a - COMPOSE_FIRST_START][index_b -
- COMPOSE_SECOND_START];
-
- if (res)
- {
- *result = res;
- return TRUE;
- }
- }
-
- return FALSE;
-}
-
-static gunichar *
-_g_utf8_normalize_wc (const gchar * str, gssize max_len, GNormalizeMode mode)
-{
- gsize n_wc;
- gunichar *wc_buffer;
- const char *p;
- gsize last_start;
- gboolean do_compat = (mode == G_NORMALIZE_NFKC || mode == G_NORMALIZE_NFKD);
- gboolean do_compose = (mode == G_NORMALIZE_NFC || mode == G_NORMALIZE_NFKC);
-
- n_wc = 0;
- p = str;
- while ((max_len < 0 || p < str + max_len) && *p)
- {
- const gchar *decomp;
- gunichar wc = g_utf8_get_char (p);
-
- if (wc >= 0xac00 && wc <= 0xd7af)
- {
- gsize result_len;
- decompose_hangul (wc, NULL, &result_len);
- n_wc += result_len;
- }
- else
- {
- decomp = find_decomposition (wc, do_compat);
-
- if (decomp)
- n_wc += g_utf8_strlen (decomp, -1);
- else
- n_wc++;
- }
-
- p = g_utf8_next_char (p);
- }
-
- wc_buffer = g_new (gunichar, n_wc + 1);
- if (!wc_buffer)
- return NULL;
-
- last_start = 0;
- n_wc = 0;
- p = str;
- while ((max_len < 0 || p < str + max_len) && *p)
- {
- gunichar wc = g_utf8_get_char (p);
- const gchar *decomp;
- int cc;
- gsize old_n_wc = n_wc;
-
- if (wc >= 0xac00 && wc <= 0xd7af)
- {
- gsize result_len;
- decompose_hangul (wc, wc_buffer + n_wc, &result_len);
- n_wc += result_len;
- }
- else
- {
- decomp = find_decomposition (wc, do_compat);
-
- if (decomp)
- {
- const char *pd;
- for (pd = decomp; *pd != '\0'; pd = g_utf8_next_char (pd))
- wc_buffer[n_wc++] = g_utf8_get_char (pd);
- }
- else
- wc_buffer[n_wc++] = wc;
- }
-
- if (n_wc > 0)
- {
- cc = COMBINING_CLASS (wc_buffer[old_n_wc]);
-
- if (cc == 0)
- {
- g_unicode_canonical_ordering (wc_buffer + last_start,
- n_wc - last_start);
- last_start = old_n_wc;
- }
- }
-
- p = g_utf8_next_char (p);
- }
-
- if (n_wc > 0)
- {
- g_unicode_canonical_ordering (wc_buffer + last_start,
- n_wc - last_start);
- last_start = n_wc;
- }
-
- wc_buffer[n_wc] = 0;
-
- /* All decomposed and reordered */
-
- if (do_compose && n_wc > 0)
- {
- gsize i, j;
- int last_cc = 0;
- last_start = 0;
-
- for (i = 0; i < n_wc; i++)
- {
- int cc = COMBINING_CLASS (wc_buffer[i]);
-
- if (i > 0 &&
- (last_cc == 0 || last_cc != cc) &&
- combine (wc_buffer[last_start], wc_buffer[i],
- &wc_buffer[last_start]))
- {
- for (j = i + 1; j < n_wc; j++)
- wc_buffer[j - 1] = wc_buffer[j];
- n_wc--;
- i--;
-
- if (i == last_start)
- last_cc = 0;
- else
- last_cc = COMBINING_CLASS (wc_buffer[i - 1]);
-
- continue;
- }
-
- if (cc == 0)
- last_start = i;
-
- last_cc = cc;
- }
- }
-
- wc_buffer[n_wc] = 0;
-
- return wc_buffer;
-}
-
-/*
- * g_utf8_normalize:
- * @str: a UTF-8 encoded string.
- * @len: length of @str, in bytes, or -1 if @str is nul-terminated.
- * @mode: the type of normalization to perform.
- *
- * Converts a string into canonical form, standardizing
- * such issues as whether a character with an accent
- * is represented as a base character and combining
- * accent or as a single precomposed character. You
- * should generally call g_utf8_normalize() before
- * comparing two Unicode strings.
- *
- * The normalization mode %G_NORMALIZE_DEFAULT only
- * standardizes differences that do not affect the
- * text content, such as the above-mentioned accent
- * representation. %G_NORMALIZE_ALL also standardizes
- * the "compatibility" characters in Unicode, such
- * as SUPERSCRIPT THREE to the standard forms
- * (in this case DIGIT THREE). Formatting information
- * may be lost but for most text operations such
- * characters should be considered the same.
- * For example, g_utf8_collate() normalizes
- * with %G_NORMALIZE_ALL as its first step.
- *
- * %G_NORMALIZE_DEFAULT_COMPOSE and %G_NORMALIZE_ALL_COMPOSE
- * are like %G_NORMALIZE_DEFAULT and %G_NORMALIZE_ALL,
- * but returned a result with composed forms rather
- * than a maximally decomposed form. This is often
- * useful if you intend to convert the string to
- * a legacy encoding or pass it to a system with
- * less capable Unicode handling.
- *
- * Return value: a newly allocated string, that is the
- * normalized form of @str.
- **/
-static gchar *
-g_utf8_normalize (const gchar * str, gssize len, GNormalizeMode mode)
-{
- gunichar *result_wc = _g_utf8_normalize_wc (str, len, mode);
- gchar *result;
-
- result = g_ucs4_to_utf8 (result_wc, -1, NULL, NULL, NULL);
- g_free (result_wc);
-
- return result;
-}
-
-/* Public Libidn API starts here. */
-
-/**
- * stringprep_utf8_to_unichar:
- * @p: a pointer to Unicode character encoded as UTF-8
- *
- * Converts a sequence of bytes encoded as UTF-8 to a Unicode character.
- * If @p does not point to a valid UTF-8 encoded character, results are
- * undefined.
- *
- * Return value: the resulting character.
- **/
-uint32_t
-stringprep_utf8_to_unichar (const char *p)
-{
- return g_utf8_get_char (p);
-}
-
-/**
- * stringprep_unichar_to_utf8:
- * @c: a ISO10646 character code
- * @outbuf: output buffer, must have at least 6 bytes of space.
- * If %NULL, the length will be computed and returned
- * and nothing will be written to @outbuf.
- *
- * Converts a single character to UTF-8.
- *
- * Return value: number of bytes written.
- **/
-int
-stringprep_unichar_to_utf8 (uint32_t c, char *outbuf)
-{
- return g_unichar_to_utf8 (c, outbuf);
-}
-
-/**
- * stringprep_utf8_to_ucs4:
- * @str: a UTF-8 encoded string
- * @len: the maximum length of @str to use. If @len < 0, then
- * the string is nul-terminated.
- * @items_written: location to store the number of characters in the
- * result, or %NULL.
- *
- * Convert a string from UTF-8 to a 32-bit fixed width
- * representation as UCS-4, assuming valid UTF-8 input.
- * This function does no error checking on the input.
- *
- * Return value: a pointer to a newly allocated UCS-4 string.
- * This value must be freed with free().
- **/
-uint32_t *
-stringprep_utf8_to_ucs4 (const char *str, ssize_t len, size_t * items_written)
-{
- return g_utf8_to_ucs4_fast (str, (glong) len, (glong *) items_written);
-}
-
-/**
- * stringprep_ucs4_to_utf8:
- * @str: a UCS-4 encoded string
- * @len: the maximum length of @str to use. If @len < 0, then
- * the string is terminated with a 0 character.
- * @items_read: location to store number of characters read read, or %NULL.
- * @items_written: location to store number of bytes written or %NULL.
- * The value here stored does not include the trailing 0
- * byte.
- *
- * Convert a string from a 32-bit fixed width representation as UCS-4.
- * to UTF-8. The result will be terminated with a 0 byte.
- *
- * Return value: a pointer to a newly allocated UTF-8 string.
- * This value must be freed with free(). If an
- * error occurs, %NULL will be returned and
- * @error set.
- **/
-char *
-stringprep_ucs4_to_utf8 (const uint32_t * str, ssize_t len,
- size_t * items_read, size_t * items_written)
-{
- return g_ucs4_to_utf8 (str, len, (glong *) items_read,
- (glong *) items_written, NULL);
-}
-
-/**
- * stringprep_utf8_nfkc_normalize:
- * @str: a UTF-8 encoded string.
- * @len: length of @str, in bytes, or -1 if @str is nul-terminated.
- *
- * Converts a string into canonical form, standardizing
- * such issues as whether a character with an accent
- * is represented as a base character and combining
- * accent or as a single precomposed character.
- *
- * The normalization mode is NFKC (ALL COMPOSE). It standardizes
- * differences that do not affect the text content, such as the
- * above-mentioned accent representation. It standardizes the
- * "compatibility" characters in Unicode, such as SUPERSCRIPT THREE to
- * the standard forms (in this case DIGIT THREE). Formatting
- * information may be lost but for most text operations such
- * characters should be considered the same. It returns a result with
- * composed forms rather than a maximally decomposed form.
- *
- * Return value: a newly allocated string, that is the
- * NFKC normalized form of @str.
- **/
-char *
-stringprep_utf8_nfkc_normalize (const char *str, ssize_t len)
-{
- return g_utf8_normalize (str, len, G_NORMALIZE_NFKC);
-}
-
-/**
- * stringprep_ucs4_nfkc_normalize:
- * @str: a Unicode string.
- * @len: length of @str array, or -1 if @str is nul-terminated.
- *
- * Converts UCS4 string into UTF-8 and runs
- * stringprep_utf8_nfkc_normalize().
- *
- * Return value: a newly allocated Unicode string, that is the NFKC
- * normalized form of @str.
- **/
-uint32_t *
-stringprep_ucs4_nfkc_normalize (uint32_t * str, ssize_t len)
-{
- char *p;
- uint32_t *result_wc;
-
- p = stringprep_ucs4_to_utf8 (str, len, 0, 0);
- result_wc = _g_utf8_normalize_wc (p, -1, G_NORMALIZE_NFKC);
- free (p);
-
- return result_wc;
-}
projects / crypto.git / blobdiff