2000-06-21 18:11:21 +02:00
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/* gutf8.c - Operations on UTF-8 strings.
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*
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* Copyright (C) 1999 Tom Tromey
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* Copyright (C) 2000 Red Hat, Inc.
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*
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* This library is free software; you can redistribute it and/or
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2000-07-26 13:02:02 +02:00
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* modify it under the terms of the GNU Lesser General Public
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2000-06-21 18:11:21 +02:00
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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2000-07-26 13:02:02 +02:00
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* Lesser General Public License for more details.
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2000-06-21 18:11:21 +02:00
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*
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2000-07-26 13:02:02 +02:00
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* You should have received a copy of the GNU Lesser General Public
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2000-06-21 18:11:21 +02:00
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#include <config.h>
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#include <stdlib.h>
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2000-07-04 00:01:58 +02:00
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#ifdef HAVE_CODESET
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2000-06-21 18:11:21 +02:00
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#include <langinfo.h>
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#endif
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#include <string.h>
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#include "glib.h"
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2001-03-09 22:31:21 +01:00
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#ifdef G_PLATFORM_WIN32
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2001-01-25 22:16:46 +01:00
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#include <stdio.h>
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#define STRICT
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2000-12-17 19:43:57 +01:00
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#include <windows.h>
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2001-03-09 22:31:21 +01:00
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#undef STRICT
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2000-12-17 19:43:57 +01:00
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#endif
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2001-01-16 03:24:24 +01:00
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#include "glibintl.h"
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2001-01-05 22:22:47 +01:00
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2000-06-21 18:11:21 +02:00
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#define UTF8_COMPUTE(Char, Mask, Len) \
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if (Char < 128) \
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{ \
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Len = 1; \
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Mask = 0x7f; \
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} \
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else if ((Char & 0xe0) == 0xc0) \
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{ \
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Len = 2; \
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Mask = 0x1f; \
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} \
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else if ((Char & 0xf0) == 0xe0) \
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{ \
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Len = 3; \
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Mask = 0x0f; \
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} \
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else if ((Char & 0xf8) == 0xf0) \
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{ \
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Len = 4; \
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Mask = 0x07; \
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} \
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else if ((Char & 0xfc) == 0xf8) \
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{ \
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Len = 5; \
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Mask = 0x03; \
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} \
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else if ((Char & 0xfe) == 0xfc) \
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{ \
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Len = 6; \
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Mask = 0x01; \
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} \
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else \
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Len = -1;
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2001-01-05 22:22:47 +01:00
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#define UTF8_LENGTH(Char) \
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((Char) < 0x80 ? 1 : \
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((Char) < 0x800 ? 2 : \
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((Char) < 0x10000 ? 3 : \
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((Char) < 0x200000 ? 4 : \
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((Char) < 0x4000000 ? 5 : 6)))))
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2000-06-21 18:11:21 +02:00
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#define UTF8_GET(Result, Chars, Count, Mask, Len) \
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(Result) = (Chars)[0] & (Mask); \
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for ((Count) = 1; (Count) < (Len); ++(Count)) \
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{ \
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if (((Chars)[(Count)] & 0xc0) != 0x80) \
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{ \
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(Result) = -1; \
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break; \
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} \
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(Result) <<= 6; \
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(Result) |= ((Chars)[(Count)] & 0x3f); \
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}
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2001-01-05 22:22:47 +01:00
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#define UNICODE_VALID(Char) \
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((Char) < 0x110000 && \
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((Char) < 0xD800 || (Char) >= 0xE000) && \
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(Char) != 0xFFFE && (Char) != 0xFFFF)
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2000-06-21 18:11:21 +02:00
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gchar g_utf8_skip[256] = {
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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,
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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,
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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,
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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,
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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,
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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,
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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,
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3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,4,4,4,4,4,4,4,4,5,5,5,5,6,6,0,0
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};
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/**
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* g_utf8_find_prev_char:
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* @str: pointer to the beginning of a UTF-8 string
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* @p: pointer to some position within @str
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*
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* Given a position @p with a UTF-8 encoded string @str, find the start
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* of the previous UTF-8 character starting before @p. Returns %NULL if no
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* UTF-8 characters are present in @p before @str.
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*
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* @p does not have to be at the beginning of a UTF-8 chracter. No check
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* is made to see if the character found is actually valid other than
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* it starts with an appropriate byte.
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*
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* Return value: a pointer to the found character or %NULL.
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**/
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gchar *
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g_utf8_find_prev_char (const char *str,
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const char *p)
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{
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for (--p; p > str; --p)
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{
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if ((*p & 0xc0) != 0x80)
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return (gchar *)p;
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}
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return NULL;
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}
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/**
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* g_utf8_find_next_char:
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* @p: a pointer to a position within a UTF-8 encoded string
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* @end: a pointer to the end of the string, or %NULL to indicate
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* that the string is NULL terminated, in which case
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* the returned value will be
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*
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* Find the start of the next utf-8 character in the string after @p
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*
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* @p does not have to be at the beginning of a UTF-8 chracter. No check
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* is made to see if the character found is actually valid other than
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* it starts with an appropriate byte.
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*
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* Return value: a pointer to the found character or %NULL
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**/
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gchar *
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g_utf8_find_next_char (const gchar *p,
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const gchar *end)
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{
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if (*p)
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{
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if (end)
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for (++p; p < end && (*p & 0xc0) == 0x80; ++p)
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;
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else
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for (++p; (*p & 0xc0) == 0x80; ++p)
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;
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}
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return (p == end) ? NULL : (gchar *)p;
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}
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/**
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* g_utf8_prev_char:
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* @p: a pointer to a position within a UTF-8 encoded string
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*
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2001-05-19 07:32:50 +02:00
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* Find the previous UTF-8 character in the string before @p.
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2000-06-21 18:11:21 +02:00
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*
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* @p does not have to be at the beginning of a UTF-8 character. No check
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* is made to see if the character found is actually valid other than
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* it starts with an appropriate byte. If @p might be the first
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* character of the string, you must use g_utf8_find_prev_char instead.
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*
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* Return value: a pointer to the found character.
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**/
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gchar *
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g_utf8_prev_char (const gchar *p)
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{
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while (TRUE)
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{
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p--;
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if ((*p & 0xc0) != 0x80)
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return (gchar *)p;
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}
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}
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/**
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* g_utf8_strlen:
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* @p: pointer to the start of a UTF-8 string.
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* @max: the maximum number of bytes to examine. If @max
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* is less than 0, then the string is assumed to be
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* nul-terminated.
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*
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* Return value: the length of the string in characters
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2001-04-16 22:05:25 +02:00
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**/
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2000-06-21 18:11:21 +02:00
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gint
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2001-05-19 07:32:50 +02:00
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g_utf8_strlen (const gchar *p,
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gint max)
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2000-06-21 18:11:21 +02:00
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{
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int len = 0;
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const gchar *start = p;
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2001-03-20 22:30:40 +01:00
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if (max < 0)
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{
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while (*p)
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{
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p = g_utf8_next_char (p);
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++len;
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}
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}
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else
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2000-06-21 18:11:21 +02:00
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{
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2001-03-20 22:30:40 +01:00
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if (max == 0 || !*p)
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return 0;
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p = g_utf8_next_char (p);
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while (p - start < max && *p)
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{
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++len;
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p = g_utf8_next_char (p);
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}
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/* only do the last len increment if we got a complete
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* char (don't count partial chars)
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*/
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if (p - start == max)
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++len;
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2000-06-21 18:11:21 +02:00
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}
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2001-03-20 22:30:40 +01:00
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2000-06-21 18:11:21 +02:00
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return len;
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}
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/**
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* g_utf8_get_char:
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* @p: a pointer to unicode character encoded as UTF-8
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*
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* Convert a sequence of bytes encoded as UTF-8 to a unicode character.
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2001-05-15 21:18:08 +02:00
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* If @p does not point to a valid UTF-8 encoded character, results are
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* undefined.
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2000-06-21 18:11:21 +02:00
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*
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2001-05-15 21:18:08 +02:00
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* Return value: the resulting character
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2000-06-21 18:11:21 +02:00
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**/
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gunichar
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g_utf8_get_char (const gchar *p)
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{
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int i, mask = 0, len;
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gunichar result;
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unsigned char c = (unsigned char) *p;
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UTF8_COMPUTE (c, mask, len);
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if (len == -1)
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return (gunichar)-1;
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UTF8_GET (result, p, i, mask, len);
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return result;
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}
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/**
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* g_utf8_offset_to_pointer:
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* @str: a UTF-8 encoded string
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* @offset: a character offset within the string.
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*
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* Converts from an integer character offset to a pointer to a position
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* within the string.
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*
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* Return value: the resulting pointer
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**/
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gchar *
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g_utf8_offset_to_pointer (const gchar *str,
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gint offset)
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{
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const gchar *s = str;
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while (offset--)
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s = g_utf8_next_char (s);
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return (gchar *)s;
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}
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/**
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* g_utf8_pointer_to_offset:
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* @str: a UTF-8 encoded string
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* @pos: a pointer to a position within @str
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*
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* Converts from a pointer to position within a string to a integer
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* character offset
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*
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* Return value: the resulting character offset
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**/
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gint
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g_utf8_pointer_to_offset (const gchar *str,
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const gchar *pos)
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{
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const gchar *s = str;
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gint offset = 0;
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while (s < pos)
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{
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s = g_utf8_next_char (s);
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offset++;
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}
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return offset;
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}
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|
2001-04-16 22:05:25 +02:00
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/**
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* g_utf8_strncpy:
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* @dest: buffer to fill with characters from @src
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* @src: UTF-8 string
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* @n: character count
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*
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* Like the standard C strncpy() function, but copies a given number
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* of characters instead of a given number of bytes. The @src string
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* must be valid UTF-8 encoded text. (Use g_utf8_validate() on all
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* text before trying to use UTF-8 utility functions with it.)
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*
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* Return value: @dest
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**/
|
2000-06-21 18:11:21 +02:00
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gchar *
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g_utf8_strncpy (gchar *dest, const gchar *src, size_t n)
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{
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const gchar *s = src;
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while (n && *s)
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{
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s = g_utf8_next_char(s);
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n--;
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}
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strncpy(dest, src, s - src);
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dest[s - src] = 0;
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return dest;
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}
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static gboolean
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g_utf8_get_charset_internal (char **a)
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{
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char *charset = getenv("CHARSET");
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if (charset && a && ! *a)
|
|
|
|
*a = charset;
|
|
|
|
|
|
|
|
if (charset && strstr (charset, "UTF-8"))
|
|
|
|
return TRUE;
|
|
|
|
|
2000-07-04 00:01:58 +02:00
|
|
|
#ifdef HAVE_CODESET
|
|
|
|
charset = nl_langinfo(CODESET);
|
2000-06-21 18:11:21 +02:00
|
|
|
if (charset)
|
|
|
|
{
|
|
|
|
if (a && ! *a)
|
|
|
|
*a = charset;
|
|
|
|
if (strcmp (charset, "UTF-8") == 0)
|
|
|
|
return TRUE;
|
|
|
|
}
|
2000-07-04 00:01:58 +02:00
|
|
|
#endif
|
|
|
|
|
|
|
|
#if 0 /* #ifdef _NL_CTYPE_CODESET_NAME */
|
|
|
|
charset = nl_langinfo (_NL_CTYPE_CODESET_NAME);
|
2000-06-21 18:11:21 +02:00
|
|
|
if (charset)
|
|
|
|
{
|
|
|
|
if (a && ! *a)
|
|
|
|
*a = charset;
|
|
|
|
if (strcmp (charset, "UTF-8") == 0)
|
|
|
|
return TRUE;
|
|
|
|
}
|
2000-07-04 00:01:58 +02:00
|
|
|
#endif
|
2000-06-21 18:11:21 +02:00
|
|
|
|
2001-03-09 22:31:21 +01:00
|
|
|
#ifdef G_PLATFORM_WIN32
|
2000-12-17 19:43:57 +01:00
|
|
|
if (a && ! *a)
|
|
|
|
{
|
|
|
|
static char codepage[10];
|
|
|
|
|
|
|
|
sprintf (codepage, "CP%d", GetACP ());
|
|
|
|
*a = codepage;
|
|
|
|
/* What about codepage 1200? Is that UTF-8? */
|
|
|
|
return FALSE;
|
|
|
|
}
|
|
|
|
#else
|
2000-06-21 18:11:21 +02:00
|
|
|
if (a && ! *a)
|
|
|
|
*a = "US-ASCII";
|
2000-12-17 19:43:57 +01:00
|
|
|
#endif
|
|
|
|
|
2000-06-21 18:11:21 +02:00
|
|
|
/* Assume this for compatibility at present. */
|
|
|
|
return FALSE;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int utf8_locale_cache = -1;
|
|
|
|
static char *utf8_charset_cache = NULL;
|
|
|
|
|
2001-04-16 22:05:25 +02:00
|
|
|
/**
|
|
|
|
* g_get_charset:
|
|
|
|
* @charset: return location for character set name
|
|
|
|
*
|
|
|
|
* Obtains the character set for the current locale; you might use
|
|
|
|
* this character set as an argument to g_convert(), to convert from
|
|
|
|
* the current locale's encoding to some other encoding. (Frequently
|
|
|
|
* g_locale_to_utf8() and g_locale_from_utf8() are nice shortcuts,
|
|
|
|
* though.)
|
|
|
|
*
|
|
|
|
* The return value is %TRUE if the locale's encoding is UTF-8, in that
|
|
|
|
* case you can perhaps avoid calling g_convert().
|
|
|
|
*
|
|
|
|
* The string returned in @charset is not allocated, and should not be
|
|
|
|
* freed.
|
|
|
|
*
|
|
|
|
* Return value: %TRUE if the returned charset is UTF-8
|
|
|
|
**/
|
2000-06-21 18:11:21 +02:00
|
|
|
gboolean
|
|
|
|
g_get_charset (char **charset)
|
|
|
|
{
|
|
|
|
if (utf8_locale_cache != -1)
|
|
|
|
{
|
|
|
|
if (charset)
|
|
|
|
*charset = utf8_charset_cache;
|
|
|
|
return utf8_locale_cache;
|
|
|
|
}
|
|
|
|
utf8_locale_cache = g_utf8_get_charset_internal (&utf8_charset_cache);
|
|
|
|
if (charset)
|
|
|
|
*charset = utf8_charset_cache;
|
|
|
|
return utf8_locale_cache;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* unicode_strchr */
|
|
|
|
|
|
|
|
/**
|
|
|
|
* g_unichar_to_utf8:
|
2000-09-06 16:42:13 +02:00
|
|
|
* @c: a ISO10646 character code
|
|
|
|
* @outbuf: output buffer, must have at least 6 bytes of space.
|
2000-07-31 20:52:11 +02:00
|
|
|
* If %NULL, the length will be computed and returned
|
|
|
|
* and nothing will be written to @out.
|
2000-06-21 18:11:21 +02:00
|
|
|
*
|
|
|
|
* Convert a single character to utf8
|
|
|
|
*
|
|
|
|
* Return value: number of bytes written
|
|
|
|
**/
|
|
|
|
int
|
|
|
|
g_unichar_to_utf8 (gunichar c, gchar *outbuf)
|
|
|
|
{
|
|
|
|
size_t 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;
|
|
|
|
}
|
|
|
|
|
2000-07-31 20:52:11 +02:00
|
|
|
if (outbuf)
|
2000-06-21 18:11:21 +02:00
|
|
|
{
|
2000-07-31 20:52:11 +02:00
|
|
|
for (i = len - 1; i > 0; --i)
|
|
|
|
{
|
|
|
|
outbuf[i] = (c & 0x3f) | 0x80;
|
|
|
|
c >>= 6;
|
|
|
|
}
|
|
|
|
outbuf[0] = c | first;
|
2000-06-21 18:11:21 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
return len;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* g_utf8_strchr:
|
|
|
|
* @p: a nul-terminated utf-8 string
|
2001-05-15 21:18:08 +02:00
|
|
|
* @c: a iso-10646 character
|
2000-06-21 18:11:21 +02:00
|
|
|
*
|
|
|
|
* Find the leftmost occurence of the given iso-10646 character
|
|
|
|
* in a UTF-8 string.
|
|
|
|
*
|
|
|
|
* Return value: NULL if the string does not contain the character, otherwise, a
|
|
|
|
* a pointer to the start of the leftmost of the character in the string.
|
|
|
|
**/
|
|
|
|
gchar *
|
|
|
|
g_utf8_strchr (const char *p, gunichar c)
|
|
|
|
{
|
|
|
|
gchar ch[10];
|
|
|
|
|
|
|
|
gint len = g_unichar_to_utf8 (c, ch);
|
|
|
|
ch[len] = '\0';
|
|
|
|
|
|
|
|
return strstr(p, ch);
|
|
|
|
}
|
|
|
|
|
|
|
|
#if 0
|
|
|
|
/**
|
|
|
|
* g_utf8_strrchr:
|
|
|
|
* @p: a nul-terminated utf-8 string
|
|
|
|
* @c: a iso-10646 character/
|
|
|
|
*
|
|
|
|
* Find the rightmost occurence of the given iso-10646 character
|
|
|
|
* in a UTF-8 string.
|
|
|
|
*
|
|
|
|
* Return value: NULL if the string does not contain the character, otherwise, a
|
|
|
|
* a pointer to the start of the rightmost of the character in the string.
|
|
|
|
**/
|
|
|
|
|
|
|
|
/* This is ifdefed out atm as there is no strrstr function in libc.
|
|
|
|
*/
|
|
|
|
gchar *
|
|
|
|
unicode_strrchr (const char *p, gunichar c)
|
|
|
|
{
|
|
|
|
gchar ch[10];
|
|
|
|
|
|
|
|
len = g_unichar_to_utf8 (c, ch);
|
|
|
|
ch[len] = '\0';
|
|
|
|
|
|
|
|
return strrstr(p, ch);
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
2001-01-05 22:22:47 +01:00
|
|
|
/* Like g_utf8_get_char, but take a maximum length
|
|
|
|
* and return (gunichar)-2 on incomplete trailing character
|
|
|
|
*/
|
|
|
|
static inline gunichar
|
|
|
|
g_utf8_get_char_extended (const gchar *p, int max_len)
|
|
|
|
{
|
|
|
|
gint i, len;
|
|
|
|
gunichar wc = (guchar) *p;
|
|
|
|
|
|
|
|
if (wc < 0x80)
|
|
|
|
{
|
|
|
|
return wc;
|
|
|
|
}
|
|
|
|
else if (wc < 0xc0)
|
|
|
|
{
|
|
|
|
return (gunichar)-1;
|
|
|
|
}
|
|
|
|
else if (wc < 0xe0)
|
|
|
|
{
|
|
|
|
len = 2;
|
|
|
|
wc &= 0x1f;
|
|
|
|
}
|
|
|
|
else if (wc < 0xf0)
|
|
|
|
{
|
|
|
|
len = 3;
|
|
|
|
wc &= 0x0f;
|
|
|
|
}
|
|
|
|
else if (wc < 0xf8)
|
|
|
|
{
|
|
|
|
len = 4;
|
|
|
|
wc &= 0x07;
|
|
|
|
}
|
|
|
|
else if (wc < 0xfc)
|
|
|
|
{
|
|
|
|
len = 5;
|
|
|
|
wc &= 0x03;
|
|
|
|
}
|
|
|
|
else if (wc < 0xfe)
|
|
|
|
{
|
|
|
|
len = 6;
|
|
|
|
wc &= 0x01;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
return (gunichar)-1;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (len == -1)
|
|
|
|
return (gunichar)-1;
|
|
|
|
if (max_len >= 0 && len > max_len)
|
|
|
|
{
|
|
|
|
for (i = 1; i < max_len; i++)
|
|
|
|
{
|
|
|
|
if ((((guchar *)p)[i] & 0xc0) != 0x80)
|
|
|
|
return (gunichar)-1;
|
|
|
|
}
|
|
|
|
return (gunichar)-2;
|
|
|
|
}
|
|
|
|
|
|
|
|
for (i = 1; i < len; ++i)
|
|
|
|
{
|
|
|
|
gunichar ch = ((guchar *)p)[i];
|
|
|
|
|
|
|
|
if ((ch & 0xc0) != 0x80)
|
|
|
|
{
|
|
|
|
if (ch)
|
|
|
|
return (gunichar)-1;
|
|
|
|
else
|
|
|
|
return (gunichar)-2;
|
|
|
|
}
|
|
|
|
|
|
|
|
wc <<= 6;
|
|
|
|
wc |= (ch & 0x3f);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (UTF8_LENGTH(wc) != len)
|
|
|
|
return (gunichar)-1;
|
|
|
|
|
|
|
|
return wc;
|
|
|
|
}
|
|
|
|
|
2000-06-21 18:11:21 +02:00
|
|
|
/**
|
2001-01-05 22:22:47 +01:00
|
|
|
* g_utf8_to_ucs4_fast:
|
|
|
|
* @str: a UTF-8 encoded string
|
|
|
|
* @len: the maximum length of @str to use. If < 0, then
|
|
|
|
* the string is %NULL terminated.
|
|
|
|
* @items_written: location to store the number of characters in the
|
|
|
|
* result, or %NULL.
|
|
|
|
*
|
2000-06-21 18:11:21 +02:00
|
|
|
* Convert a string from UTF-8 to a 32-bit fixed width
|
2001-01-05 22:22:47 +01:00
|
|
|
* 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.
|
2000-06-21 18:11:21 +02:00
|
|
|
*
|
|
|
|
* Return value: a pointer to a newly allocated UCS-4 string.
|
|
|
|
* This value must be freed with g_free()
|
|
|
|
**/
|
|
|
|
gunichar *
|
2001-01-05 22:22:47 +01:00
|
|
|
g_utf8_to_ucs4_fast (const gchar *str,
|
|
|
|
gint len,
|
|
|
|
gint *items_written)
|
2000-06-21 18:11:21 +02:00
|
|
|
{
|
2001-01-05 22:22:47 +01:00
|
|
|
gint j, charlen;
|
2000-06-21 18:11:21 +02:00
|
|
|
gunichar *result;
|
|
|
|
gint n_chars, i;
|
|
|
|
const gchar *p;
|
2001-01-05 22:22:47 +01:00
|
|
|
|
|
|
|
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
|
|
|
|
{
|
2001-05-02 17:19:55 +02:00
|
|
|
while (p < str + len && *p)
|
2001-01-05 22:22:47 +01:00
|
|
|
{
|
|
|
|
p = g_utf8_next_char (p);
|
|
|
|
++n_chars;
|
|
|
|
}
|
|
|
|
}
|
2000-06-21 18:11:21 +02:00
|
|
|
|
2001-01-05 22:22:47 +01:00
|
|
|
result = g_new (gunichar, n_chars + 1);
|
2000-06-21 18:11:21 +02:00
|
|
|
|
|
|
|
p = str;
|
|
|
|
for (i=0; i < n_chars; i++)
|
|
|
|
{
|
2001-01-05 22:22:47 +01:00
|
|
|
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;
|
|
|
|
}
|
2000-06-21 18:11:21 +02:00
|
|
|
}
|
2001-01-05 22:22:47 +01:00
|
|
|
result[i] = 0;
|
|
|
|
|
|
|
|
if (items_written)
|
|
|
|
*items_written = i;
|
|
|
|
|
|
|
|
return result;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* g_utf8_to_ucs4:
|
|
|
|
* @str: a UTF-8 encoded string
|
|
|
|
* @len: the maximum length of @str to use. If < 0, then
|
|
|
|
* the string is %NULL terminated.
|
|
|
|
* @items_read: location to store number of bytes read, or %NULL.
|
|
|
|
* If %NULL, then %G_CONVERT_ERROR_PARTIAL_INPUT will be
|
|
|
|
* returned in case @str contains a trailing partial
|
|
|
|
* character. If an error occurs then the index of the
|
|
|
|
* invalid input is stored here.
|
|
|
|
* @items_written: location to store number of characters written or %NULL.
|
|
|
|
* The value here stored does not include the trailing 0
|
|
|
|
* character.
|
|
|
|
* @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 UTF-8 to a 32-bit fixed width
|
|
|
|
* representation as UCS-4. A trailing 0 will be added to the
|
|
|
|
* string after the converted text.
|
|
|
|
*
|
|
|
|
* Return value: a pointer to a newly allocated UCS-4 string.
|
|
|
|
* This value must be freed with g_free(). If an
|
|
|
|
* error occurs, %NULL will be returned and
|
|
|
|
* @error set.
|
|
|
|
**/
|
|
|
|
gunichar *
|
|
|
|
g_utf8_to_ucs4 (const gchar *str,
|
|
|
|
gint len,
|
|
|
|
gint *items_read,
|
|
|
|
gint *items_written,
|
|
|
|
GError **error)
|
|
|
|
{
|
|
|
|
gunichar *result = NULL;
|
|
|
|
gint n_chars, i;
|
|
|
|
const gchar *in;
|
|
|
|
|
|
|
|
in = str;
|
|
|
|
n_chars = 0;
|
|
|
|
while ((len < 0 || str + len - in > 0) && *in)
|
|
|
|
{
|
|
|
|
gunichar wc = g_utf8_get_char_extended (in, str + len - in);
|
|
|
|
if (wc & 0x80000000)
|
|
|
|
{
|
|
|
|
if (wc == (gunichar)-2)
|
|
|
|
{
|
|
|
|
if (items_read)
|
|
|
|
break;
|
|
|
|
else
|
|
|
|
g_set_error (error, G_CONVERT_ERROR, G_CONVERT_ERROR_PARTIAL_INPUT,
|
|
|
|
_("Partial character sequence at end of input"));
|
|
|
|
}
|
|
|
|
else
|
|
|
|
g_set_error (error, G_CONVERT_ERROR, G_CONVERT_ERROR_ILLEGAL_SEQUENCE,
|
|
|
|
_("Invalid byte sequence in conversion input"));
|
|
|
|
|
|
|
|
goto err_out;
|
|
|
|
}
|
|
|
|
|
|
|
|
n_chars++;
|
|
|
|
|
|
|
|
in = g_utf8_next_char (in);
|
|
|
|
}
|
|
|
|
|
|
|
|
result = g_new (gunichar, n_chars + 1);
|
|
|
|
|
|
|
|
in = str;
|
|
|
|
for (i=0; i < n_chars; i++)
|
|
|
|
{
|
|
|
|
result[i] = g_utf8_get_char (in);
|
|
|
|
in = g_utf8_next_char (in);
|
|
|
|
}
|
|
|
|
result[i] = 0;
|
|
|
|
|
|
|
|
if (items_written)
|
|
|
|
*items_written = n_chars;
|
|
|
|
|
|
|
|
err_out:
|
|
|
|
if (items_read)
|
|
|
|
*items_read = in - str;
|
2000-06-21 18:11:21 +02:00
|
|
|
|
|
|
|
return result;
|
|
|
|
}
|
|
|
|
|
2000-09-18 16:55:24 +02:00
|
|
|
/**
|
|
|
|
* g_ucs4_to_utf8:
|
|
|
|
* @str: a UCS-4 encoded string
|
2001-01-05 22:22:47 +01:00
|
|
|
* @len: the maximum length of @str to use. If < 0, then
|
|
|
|
* the string is %NULL terminated.
|
|
|
|
* @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.
|
|
|
|
*
|
2000-09-18 16:55:24 +02:00
|
|
|
* Convert a string from a 32-bit fixed width representation as UCS-4.
|
2001-01-05 22:22:47 +01:00
|
|
|
* to UTF-8. The result will be terminated with a 0 byte.
|
2000-09-18 16:55:24 +02:00
|
|
|
*
|
|
|
|
* Return value: a pointer to a newly allocated UTF-8 string.
|
2001-01-05 22:22:47 +01:00
|
|
|
* This value must be freed with g_free(). If an
|
|
|
|
* error occurs, %NULL will be returned and
|
|
|
|
* @error set.
|
2000-09-18 16:55:24 +02:00
|
|
|
**/
|
|
|
|
gchar *
|
2001-01-05 22:22:47 +01:00
|
|
|
g_ucs4_to_utf8 (const gunichar *str,
|
|
|
|
gint len,
|
|
|
|
gint *items_read,
|
|
|
|
gint *items_written,
|
|
|
|
GError **error)
|
2000-09-18 16:55:24 +02:00
|
|
|
{
|
|
|
|
gint result_length;
|
2001-01-05 22:22:47 +01:00
|
|
|
gchar *result = NULL;
|
|
|
|
gchar *p;
|
2000-09-18 16:55:24 +02:00
|
|
|
gint i;
|
|
|
|
|
|
|
|
result_length = 0;
|
2001-01-05 22:22:47 +01:00
|
|
|
for (i = 0; len < 0 || i < len ; i++)
|
|
|
|
{
|
|
|
|
if (!str[i])
|
|
|
|
break;
|
2000-09-18 16:55:24 +02:00
|
|
|
|
2001-01-05 22:22:47 +01:00
|
|
|
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]);
|
|
|
|
}
|
2000-09-18 16:55:24 +02:00
|
|
|
|
|
|
|
result = g_malloc (result_length + 1);
|
|
|
|
p = result;
|
|
|
|
|
2001-01-05 22:22:47 +01:00
|
|
|
i = 0;
|
|
|
|
while (p < result + result_length)
|
|
|
|
p += g_unichar_to_utf8 (str[i++], p);
|
2000-09-18 16:55:24 +02:00
|
|
|
|
|
|
|
*p = '\0';
|
|
|
|
|
2001-01-05 22:22:47 +01:00
|
|
|
if (items_written)
|
|
|
|
*items_written = p - result;
|
|
|
|
|
|
|
|
err_out:
|
|
|
|
if (items_read)
|
|
|
|
*items_read = i;
|
|
|
|
|
|
|
|
return result;
|
|
|
|
}
|
|
|
|
|
|
|
|
#define SURROGATE_VALUE(h,l) (((h) - 0xd800) * 0x400 + (l) - 0xdc00 + 0x10000)
|
|
|
|
|
|
|
|
/**
|
|
|
|
* g_utf16_to_utf8:
|
|
|
|
* @str: a UTF-16 encoded string
|
|
|
|
* @len: the maximum length of @str to use. If < 0, then
|
|
|
|
* the string is terminated with a 0 character.
|
|
|
|
* @items_read: location to store number of words read, or %NULL.
|
|
|
|
* If %NULL, then %G_CONVERT_ERROR_PARTIAL_INPUT will be
|
|
|
|
* returned in case @str contains a trailing partial
|
|
|
|
* character. If an error occurs then the index of the
|
|
|
|
* invalid input is stored here.
|
|
|
|
* @items_written: location to store number of bytes written, or %NULL.
|
|
|
|
* The value stored here 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 UTF-16 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.
|
|
|
|
**/
|
|
|
|
gchar *
|
|
|
|
g_utf16_to_utf8 (const gunichar2 *str,
|
|
|
|
gint len,
|
|
|
|
gint *items_read,
|
|
|
|
gint *items_written,
|
|
|
|
GError **error)
|
|
|
|
{
|
|
|
|
/* This function and g_utf16_to_ucs4 are almost exactly identical - The lines that differ
|
|
|
|
* are marked.
|
|
|
|
*/
|
|
|
|
const gunichar2 *in;
|
|
|
|
gchar *out;
|
|
|
|
gchar *result = NULL;
|
|
|
|
gint n_bytes;
|
|
|
|
gunichar high_surrogate;
|
|
|
|
|
|
|
|
g_return_val_if_fail (str != 0, NULL);
|
|
|
|
|
|
|
|
n_bytes = 0;
|
|
|
|
in = str;
|
|
|
|
high_surrogate = 0;
|
|
|
|
while ((len < 0 || in - str < len) && *in)
|
|
|
|
{
|
|
|
|
gunichar2 c = *in;
|
|
|
|
gunichar wc;
|
|
|
|
|
|
|
|
if (c >= 0xdc00 && c < 0xe000) /* low surrogate */
|
|
|
|
{
|
|
|
|
if (high_surrogate)
|
|
|
|
{
|
|
|
|
wc = SURROGATE_VALUE (high_surrogate, c);
|
|
|
|
high_surrogate = 0;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
g_set_error (error, G_CONVERT_ERROR, G_CONVERT_ERROR_ILLEGAL_SEQUENCE,
|
|
|
|
_("Invalid sequence in conversion input"));
|
|
|
|
goto err_out;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
if (high_surrogate)
|
|
|
|
{
|
|
|
|
g_set_error (error, G_CONVERT_ERROR, G_CONVERT_ERROR_ILLEGAL_SEQUENCE,
|
|
|
|
_("Invalid sequence in conversion input"));
|
|
|
|
goto err_out;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (c >= 0xd800 && c < 0xdc00) /* high surrogate */
|
|
|
|
{
|
|
|
|
high_surrogate = c;
|
|
|
|
goto next1;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
wc = c;
|
|
|
|
}
|
|
|
|
|
|
|
|
/********** DIFFERENT for UTF8/UCS4 **********/
|
|
|
|
n_bytes += UTF8_LENGTH (wc);
|
|
|
|
|
|
|
|
next1:
|
|
|
|
in++;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (high_surrogate && !items_read)
|
|
|
|
{
|
|
|
|
g_set_error (error, G_CONVERT_ERROR, G_CONVERT_ERROR_PARTIAL_INPUT,
|
|
|
|
_("Partial character sequence at end of input"));
|
|
|
|
goto err_out;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* At this point, everything is valid, and we just need to convert
|
|
|
|
*/
|
|
|
|
/********** DIFFERENT for UTF8/UCS4 **********/
|
|
|
|
result = g_malloc (n_bytes + 1);
|
|
|
|
|
|
|
|
high_surrogate = 0;
|
|
|
|
out = result;
|
|
|
|
in = str;
|
|
|
|
while (out < result + n_bytes)
|
|
|
|
{
|
|
|
|
gunichar2 c = *in;
|
|
|
|
gunichar wc;
|
|
|
|
|
|
|
|
if (c >= 0xdc00 && c < 0xe000) /* low surrogate */
|
|
|
|
{
|
|
|
|
wc = SURROGATE_VALUE (high_surrogate, c);
|
|
|
|
high_surrogate = 0;
|
|
|
|
}
|
|
|
|
else if (c >= 0xd800 && c < 0xdc00) /* high surrogate */
|
|
|
|
{
|
|
|
|
high_surrogate = c;
|
|
|
|
goto next2;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
wc = c;
|
|
|
|
|
|
|
|
/********** DIFFERENT for UTF8/UCS4 **********/
|
|
|
|
out += g_unichar_to_utf8 (wc, out);
|
|
|
|
|
|
|
|
next2:
|
|
|
|
in++;
|
|
|
|
}
|
|
|
|
|
|
|
|
/********** DIFFERENT for UTF8/UCS4 **********/
|
|
|
|
*out = '\0';
|
|
|
|
|
|
|
|
if (items_written)
|
|
|
|
/********** DIFFERENT for UTF8/UCS4 **********/
|
|
|
|
*items_written = out - result;
|
|
|
|
|
|
|
|
err_out:
|
|
|
|
if (items_read)
|
|
|
|
*items_read = in - str;
|
|
|
|
|
|
|
|
return result;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* g_utf16_to_ucs4:
|
|
|
|
* @str: a UTF-16 encoded string
|
|
|
|
* @len: the maximum length of @str to use. If < 0, then
|
|
|
|
* the string is terminated with a 0 character.
|
|
|
|
* @items_read: location to store number of words read, or %NULL.
|
|
|
|
* If %NULL, then %G_CONVERT_ERROR_PARTIAL_INPUT will be
|
|
|
|
* returned in case @str contains a trailing partial
|
|
|
|
* character. If an error occurs then the index of the
|
|
|
|
* invalid input is stored here.
|
|
|
|
* @items_written: location to store number of characters written, or %NULL.
|
|
|
|
* The value stored here does not include the trailing
|
|
|
|
* 0 character.
|
|
|
|
* @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 UTF-16 to UCS-4. The result will be
|
|
|
|
* terminated with a 0 character.
|
|
|
|
*
|
|
|
|
* Return value: a pointer to a newly allocated UCS-4 string.
|
|
|
|
* This value must be freed with g_free(). If an
|
|
|
|
* error occurs, %NULL will be returned and
|
|
|
|
* @error set.
|
|
|
|
**/
|
|
|
|
gunichar *
|
|
|
|
g_utf16_to_ucs4 (const gunichar2 *str,
|
|
|
|
gint len,
|
|
|
|
gint *items_read,
|
|
|
|
gint *items_written,
|
|
|
|
GError **error)
|
|
|
|
{
|
|
|
|
const gunichar2 *in;
|
|
|
|
gchar *out;
|
|
|
|
gchar *result = NULL;
|
|
|
|
gint n_bytes;
|
|
|
|
gunichar high_surrogate;
|
|
|
|
|
|
|
|
g_return_val_if_fail (str != 0, NULL);
|
|
|
|
|
|
|
|
n_bytes = 0;
|
|
|
|
in = str;
|
|
|
|
high_surrogate = 0;
|
|
|
|
while ((len < 0 || in - str < len) && *in)
|
|
|
|
{
|
|
|
|
gunichar2 c = *in;
|
|
|
|
gunichar wc;
|
|
|
|
|
|
|
|
if (c >= 0xdc00 && c < 0xe000) /* low surrogate */
|
|
|
|
{
|
|
|
|
if (high_surrogate)
|
|
|
|
{
|
|
|
|
wc = SURROGATE_VALUE (high_surrogate, c);
|
|
|
|
high_surrogate = 0;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
g_set_error (error, G_CONVERT_ERROR, G_CONVERT_ERROR_ILLEGAL_SEQUENCE,
|
|
|
|
_("Invalid sequence in conversion input"));
|
|
|
|
goto err_out;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
if (high_surrogate)
|
|
|
|
{
|
|
|
|
g_set_error (error, G_CONVERT_ERROR, G_CONVERT_ERROR_ILLEGAL_SEQUENCE,
|
|
|
|
_("Invalid sequence in conversion input"));
|
|
|
|
goto err_out;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (c >= 0xd800 && c < 0xdc00) /* high surrogate */
|
|
|
|
{
|
|
|
|
high_surrogate = c;
|
|
|
|
goto next1;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
wc = c;
|
|
|
|
}
|
|
|
|
|
|
|
|
/********** DIFFERENT for UTF8/UCS4 **********/
|
|
|
|
n_bytes += sizeof (gunichar);
|
|
|
|
|
|
|
|
next1:
|
|
|
|
in++;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (high_surrogate && !items_read)
|
|
|
|
{
|
|
|
|
g_set_error (error, G_CONVERT_ERROR, G_CONVERT_ERROR_PARTIAL_INPUT,
|
|
|
|
_("Partial character sequence at end of input"));
|
|
|
|
goto err_out;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* At this point, everything is valid, and we just need to convert
|
|
|
|
*/
|
|
|
|
/********** DIFFERENT for UTF8/UCS4 **********/
|
|
|
|
result = g_malloc (n_bytes + 4);
|
|
|
|
|
|
|
|
high_surrogate = 0;
|
|
|
|
out = result;
|
|
|
|
in = str;
|
|
|
|
while (out < result + n_bytes)
|
|
|
|
{
|
|
|
|
gunichar2 c = *in;
|
|
|
|
gunichar wc;
|
|
|
|
|
|
|
|
if (c >= 0xdc00 && c < 0xe000) /* low surrogate */
|
|
|
|
{
|
|
|
|
wc = SURROGATE_VALUE (high_surrogate, c);
|
|
|
|
high_surrogate = 0;
|
|
|
|
}
|
|
|
|
else if (c >= 0xd800 && c < 0xdc00) /* high surrogate */
|
|
|
|
{
|
|
|
|
high_surrogate = c;
|
|
|
|
goto next2;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
wc = c;
|
|
|
|
|
|
|
|
/********** DIFFERENT for UTF8/UCS4 **********/
|
|
|
|
*(gunichar *)out = wc;
|
|
|
|
out += sizeof (gunichar);
|
|
|
|
|
|
|
|
next2:
|
|
|
|
in++;
|
|
|
|
}
|
|
|
|
|
|
|
|
/********** DIFFERENT for UTF8/UCS4 **********/
|
|
|
|
*(gunichar *)out = 0;
|
|
|
|
|
|
|
|
if (items_written)
|
|
|
|
/********** DIFFERENT for UTF8/UCS4 **********/
|
|
|
|
*items_written = (out - result) / sizeof (gunichar);
|
|
|
|
|
|
|
|
err_out:
|
|
|
|
if (items_read)
|
|
|
|
*items_read = in - str;
|
|
|
|
|
|
|
|
return (gunichar *)result;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* g_utf8_to_utf16:
|
|
|
|
* @str: a UTF-8 encoded string
|
|
|
|
* @len: the maximum length of @str to use. If < 0, then
|
|
|
|
* the string is %NULL terminated.
|
|
|
|
|
|
|
|
* @items_read: location to store number of bytes read, or %NULL.
|
|
|
|
* If %NULL, then %G_CONVERT_ERROR_PARTIAL_INPUT will be
|
|
|
|
* returned in case @str contains a trailing partial
|
|
|
|
* character. If an error occurs then the index of the
|
|
|
|
* invalid input is stored here.
|
|
|
|
* @items_written: location to store number of words written, or %NULL.
|
|
|
|
* The value stored here does not include the trailing
|
|
|
|
* 0 word.
|
|
|
|
* @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 UTF-8 to UTF-16. A 0 word will be
|
|
|
|
* added to the result after the converted text.
|
|
|
|
*
|
|
|
|
* Return value: a pointer to a newly allocated UTF-16 string.
|
|
|
|
* This value must be freed with g_free(). If an
|
|
|
|
* error occurs, %NULL will be returned and
|
|
|
|
* @error set.
|
|
|
|
**/
|
|
|
|
gunichar2 *
|
|
|
|
g_utf8_to_utf16 (const gchar *str,
|
|
|
|
gint len,
|
|
|
|
gint *items_read,
|
|
|
|
gint *items_written,
|
|
|
|
GError **error)
|
|
|
|
{
|
|
|
|
gunichar2 *result = NULL;
|
|
|
|
gint n16;
|
|
|
|
const gchar *in;
|
|
|
|
gint i;
|
|
|
|
|
|
|
|
g_return_val_if_fail (str != NULL, NULL);
|
|
|
|
|
|
|
|
in = str;
|
|
|
|
n16 = 0;
|
|
|
|
while ((len < 0 || str + len - in > 0) && *in)
|
|
|
|
{
|
|
|
|
gunichar wc = g_utf8_get_char_extended (in, str + len - in);
|
|
|
|
if (wc & 0x80000000)
|
|
|
|
{
|
|
|
|
if (wc == (gunichar)-2)
|
|
|
|
{
|
|
|
|
if (items_read)
|
|
|
|
break;
|
|
|
|
else
|
|
|
|
g_set_error (error, G_CONVERT_ERROR, G_CONVERT_ERROR_PARTIAL_INPUT,
|
|
|
|
_("Partial character sequence at end of input"));
|
|
|
|
}
|
|
|
|
else
|
|
|
|
g_set_error (error, G_CONVERT_ERROR, G_CONVERT_ERROR_ILLEGAL_SEQUENCE,
|
|
|
|
_("Invalid byte sequence in conversion input"));
|
|
|
|
|
|
|
|
goto err_out;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (wc < 0xd800)
|
|
|
|
n16 += 1;
|
|
|
|
else if (wc < 0xe000)
|
|
|
|
{
|
|
|
|
g_set_error (error, G_CONVERT_ERROR, G_CONVERT_ERROR_ILLEGAL_SEQUENCE,
|
|
|
|
_("Invalid sequence in conversion input"));
|
|
|
|
|
|
|
|
goto err_out;
|
|
|
|
}
|
|
|
|
else if (wc < 0x10000)
|
|
|
|
n16 += 1;
|
|
|
|
else if (wc < 0x110000)
|
|
|
|
n16 += 2;
|
|
|
|
else
|
|
|
|
{
|
|
|
|
g_set_error (error, G_CONVERT_ERROR, G_CONVERT_ERROR_ILLEGAL_SEQUENCE,
|
|
|
|
_("Character out of range for UTF-16"));
|
|
|
|
|
|
|
|
goto err_out;
|
|
|
|
}
|
|
|
|
|
|
|
|
in = g_utf8_next_char (in);
|
|
|
|
}
|
|
|
|
|
|
|
|
result = g_new (gunichar2, n16 + 1);
|
|
|
|
|
|
|
|
in = str;
|
|
|
|
for (i = 0; i < n16;)
|
|
|
|
{
|
|
|
|
gunichar wc = g_utf8_get_char (in);
|
|
|
|
|
|
|
|
if (wc < 0x10000)
|
|
|
|
{
|
|
|
|
result[i++] = wc;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
result[i++] = (wc - 0x10000) / 0x400 + 0xd800;
|
|
|
|
result[i++] = (wc - 0x10000) % 0x400 + 0xdc00;
|
|
|
|
}
|
|
|
|
|
|
|
|
in = g_utf8_next_char (in);
|
|
|
|
}
|
|
|
|
|
|
|
|
result[i] = 0;
|
|
|
|
|
|
|
|
if (items_written)
|
|
|
|
*items_written = n16;
|
|
|
|
|
|
|
|
err_out:
|
|
|
|
if (items_read)
|
|
|
|
*items_read = in - str;
|
|
|
|
|
|
|
|
return result;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* g_ucs4_to_utf16:
|
|
|
|
* @str: a UCS-4 encoded string
|
|
|
|
* @len: the maximum length of @str to use. If < 0, then
|
|
|
|
* the string is terminated with a zero character.
|
|
|
|
* @items_read: location to store number of bytes read, or %NULL.
|
|
|
|
* If an error occurs then the index of the invalid input
|
|
|
|
* is stored here.
|
|
|
|
* @items_written: location to store number of words written, or %NULL.
|
|
|
|
* The value stored here does not include the trailing
|
|
|
|
* 0 word.
|
|
|
|
* @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 UCS-4 to UTF-16. A 0 word will be
|
|
|
|
* added to the result after the converted text.
|
|
|
|
*
|
|
|
|
* Return value: a pointer to a newly allocated UTF-16 string.
|
|
|
|
* This value must be freed with g_free(). If an
|
|
|
|
* error occurs, %NULL will be returned and
|
|
|
|
* @error set.
|
|
|
|
**/
|
|
|
|
gunichar2 *
|
|
|
|
g_ucs4_to_utf16 (const gunichar *str,
|
|
|
|
gint len,
|
|
|
|
gint *items_read,
|
|
|
|
gint *items_written,
|
|
|
|
GError **error)
|
|
|
|
{
|
|
|
|
gunichar2 *result = NULL;
|
|
|
|
gint n16;
|
|
|
|
gint i, j;
|
|
|
|
|
|
|
|
n16 = 0;
|
|
|
|
i = 0;
|
|
|
|
while ((len < 0 || i < len) && str[i])
|
|
|
|
{
|
|
|
|
gunichar wc = str[i];
|
|
|
|
|
|
|
|
if (wc < 0xd800)
|
|
|
|
n16 += 1;
|
|
|
|
else if (wc < 0xe000)
|
|
|
|
{
|
|
|
|
g_set_error (error, G_CONVERT_ERROR, G_CONVERT_ERROR_ILLEGAL_SEQUENCE,
|
|
|
|
_("Invalid sequence in conversion input"));
|
|
|
|
|
|
|
|
goto err_out;
|
|
|
|
}
|
|
|
|
else if (wc < 0x10000)
|
|
|
|
n16 += 1;
|
|
|
|
else if (wc < 0x110000)
|
|
|
|
n16 += 2;
|
|
|
|
else
|
|
|
|
{
|
|
|
|
g_set_error (error, G_CONVERT_ERROR, G_CONVERT_ERROR_ILLEGAL_SEQUENCE,
|
|
|
|
_("Character out of range for UTF-16"));
|
|
|
|
|
|
|
|
goto err_out;
|
|
|
|
}
|
|
|
|
|
|
|
|
i++;
|
|
|
|
}
|
|
|
|
|
|
|
|
result = g_new (gunichar2, n16 + 1);
|
|
|
|
|
|
|
|
for (i = 0, j = 0; j < n16; i++)
|
|
|
|
{
|
|
|
|
gunichar wc = str[i];
|
|
|
|
|
|
|
|
if (wc < 0x10000)
|
|
|
|
{
|
|
|
|
result[j++] = wc;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
result[j++] = (wc - 0x10000) / 0x400 + 0xd800;
|
|
|
|
result[j++] = (wc - 0x10000) % 0x400 + 0xdc00;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
result[j] = 0;
|
|
|
|
|
|
|
|
if (items_written)
|
|
|
|
*items_written = n16;
|
|
|
|
|
|
|
|
err_out:
|
|
|
|
if (items_read)
|
|
|
|
*items_read = i;
|
|
|
|
|
2000-09-18 16:55:24 +02:00
|
|
|
return result;
|
|
|
|
}
|
|
|
|
|
2000-09-11 02:09:31 +02:00
|
|
|
/**
|
|
|
|
* g_utf8_validate:
|
|
|
|
* @str: a pointer to character data
|
|
|
|
* @max_len: max bytes to validate, or -1 to go until nul
|
|
|
|
* @end: return location for end of valid data
|
|
|
|
*
|
|
|
|
* Validates UTF-8 encoded text. @str is the text to validate;
|
|
|
|
* if @str is nul-terminated, then @max_len can be -1, otherwise
|
|
|
|
* @max_len should be the number of bytes to validate.
|
2001-05-15 21:18:08 +02:00
|
|
|
* If @end is non-%NULL, then the end of the valid range
|
2000-09-11 02:09:31 +02:00
|
|
|
* will be stored there (i.e. the address of the first invalid byte
|
|
|
|
* if some bytes were invalid, or the end of the text being validated
|
|
|
|
* otherwise).
|
|
|
|
*
|
|
|
|
* Returns TRUE if all of @str was valid. Many GLib and GTK+
|
|
|
|
* routines <emphasis>require</emphasis> valid UTF8 as input;
|
|
|
|
* so data read from a file or the network should be checked
|
|
|
|
* with g_utf8_validate() before doing anything else with it.
|
|
|
|
*
|
|
|
|
* Return value: TRUE if the text was valid UTF-8.
|
|
|
|
**/
|
|
|
|
gboolean
|
|
|
|
g_utf8_validate (const gchar *str,
|
|
|
|
gint max_len,
|
|
|
|
const gchar **end)
|
|
|
|
{
|
|
|
|
|
|
|
|
const gchar *p;
|
2001-01-05 22:22:47 +01:00
|
|
|
|
|
|
|
g_return_val_if_fail (str != NULL, FALSE);
|
2000-09-11 02:09:31 +02:00
|
|
|
|
|
|
|
if (end)
|
|
|
|
*end = str;
|
|
|
|
|
|
|
|
p = str;
|
|
|
|
|
|
|
|
while ((max_len < 0 || (p - str) < max_len) && *p)
|
|
|
|
{
|
|
|
|
int i, mask = 0, len;
|
|
|
|
gunichar result;
|
|
|
|
unsigned char c = (unsigned char) *p;
|
|
|
|
|
|
|
|
UTF8_COMPUTE (c, mask, len);
|
|
|
|
|
|
|
|
if (len == -1)
|
2000-12-14 00:54:51 +01:00
|
|
|
break;
|
2000-09-11 02:09:31 +02:00
|
|
|
|
|
|
|
/* check that the expected number of bytes exists in str */
|
|
|
|
if (max_len >= 0 &&
|
|
|
|
((max_len - (p - str)) < len))
|
2000-12-14 00:54:51 +01:00
|
|
|
break;
|
2000-09-11 02:09:31 +02:00
|
|
|
|
|
|
|
UTF8_GET (result, p, i, mask, len);
|
|
|
|
|
2001-01-05 22:22:47 +01:00
|
|
|
if (UTF8_LENGTH (result) != len) /* Check for overlong UTF-8 */
|
|
|
|
break;
|
|
|
|
|
2000-09-11 02:09:31 +02:00
|
|
|
if (result == (gunichar)-1)
|
2000-12-14 00:54:51 +01:00
|
|
|
break;
|
2001-01-05 22:22:47 +01:00
|
|
|
|
|
|
|
if (!UNICODE_VALID (result))
|
|
|
|
break;
|
2000-09-11 02:09:31 +02:00
|
|
|
|
|
|
|
p += len;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (end)
|
|
|
|
*end = p;
|
2000-12-14 00:54:51 +01:00
|
|
|
|
|
|
|
/* See that we covered the entire length if a length was
|
|
|
|
* passed in, or that we ended on a nul if not
|
|
|
|
*/
|
|
|
|
if (max_len >= 0 &&
|
|
|
|
p != (str + max_len))
|
|
|
|
return FALSE;
|
|
|
|
else if (max_len < 0 &&
|
|
|
|
*p != '\0')
|
|
|
|
return FALSE;
|
|
|
|
else
|
|
|
|
return TRUE;
|
2000-09-11 02:09:31 +02:00
|
|
|
}
|
|
|
|
|
2001-03-20 01:55:44 +01:00
|
|
|
/**
|
|
|
|
* g_unichar_validate:
|
|
|
|
* @ch: a Unicode character
|
|
|
|
*
|
|
|
|
* Checks whether @ch is a valid Unicode character. Some possible
|
|
|
|
* integer values of @ch will not be valid. 0 is considered a valid
|
|
|
|
* character, though it's normally a string terminator.
|
|
|
|
*
|
|
|
|
* Return value: %TRUE if @ch is a valid Unicode character
|
|
|
|
**/
|
|
|
|
gboolean
|
|
|
|
g_unichar_validate (gunichar ch)
|
|
|
|
{
|
|
|
|
return UNICODE_VALID (ch);
|
|
|
|
}
|