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/*
* gunicode.c: Some Unicode routines
*
* Author:
* Miguel de Icaza (miguel@novell.com)
*
* (C) 2006 Novell, Inc.
*
* utf8 validation code came from:
* libxml2-2.6.26 licensed under the MIT X11 license
*
* Authors credit in libxml's string.c:
* William Brack <wbrack@mmm.com.hk>
* daniel@veillard.com
*
* 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.
*
*/
#include <config.h>
#include <stdio.h>
#include <glib.h>
#include <unicode-data.h>
#include <errno.h>
#if defined(_MSC_VER) || defined(G_OS_WIN32)
/* FIXME */
# define CODESET 1
# include <windows.h>
#else
# ifdef HAVE_LANGINFO_H
# include <langinfo.h>
# endif
# ifdef HAVE_LOCALCHARSET_H
# include <localcharset.h>
# endif
#endif
static const char *my_charset;
static gboolean is_utf8;
/*
* Character set conversion
*/
GUnicodeType
g_unichar_type (gunichar c)
{
int i;
guint16 cp = (guint16) c;
for (i = 0; i < unicode_category_ranges_count; i++) {
if (cp < unicode_category_ranges [i].start)
continue;
if (unicode_category_ranges [i].end <= cp)
continue;
return unicode_category [i] [cp - unicode_category_ranges [i].start];
}
/*
// 3400-4DB5: OtherLetter
// 4E00-9FC3: OtherLetter
// AC00-D7A3: OtherLetter
// D800-DFFF: OtherSurrogate
// E000-F8FF: OtherPrivateUse
// 20000-2A6D6 OtherLetter
// F0000-FFFFD OtherPrivateUse
// 100000-10FFFD OtherPrivateUse
*/
if (0x3400 <= cp && cp < 0x4DB5)
return G_UNICODE_OTHER_LETTER;
if (0x4E00 <= cp && cp < 0x9FC3)
return G_UNICODE_OTHER_LETTER;
if (0xAC00<= cp && cp < 0xD7A3)
return G_UNICODE_OTHER_LETTER;
if (0xD800 <= cp && cp < 0xDFFF)
return G_UNICODE_SURROGATE;
if (0xE000 <= cp && cp < 0xF8FF)
return G_UNICODE_PRIVATE_USE;
/* since the argument is UTF-16, we cannot check beyond FFFF */
/* It should match any of above */
return 0;
}
GUnicodeBreakType
g_unichar_break_type (gunichar c)
{
// MOONLIGHT_FIXME
return G_UNICODE_BREAK_UNKNOWN;
}
gunichar
g_unichar_case (gunichar c, gboolean upper)
{
gint8 i, i2;
guint32 cp = (guint32) c, v;
for (i = 0; i < simple_case_map_ranges_count; i++) {
if (cp < simple_case_map_ranges [i].start)
return c;
if (simple_case_map_ranges [i].end <= cp)
continue;
if (c < 0x10000) {
const guint16 *tab = upper ? simple_upper_case_mapping_lowarea [i] : simple_lower_case_mapping_lowarea [i];
v = tab [cp - simple_case_map_ranges [i].start];
} else {
const guint32 *tab;
i2 = (gint8)(i - (upper ? simple_upper_case_mapping_lowarea_table_count : simple_lower_case_mapping_lowarea_table_count));
tab = upper ? simple_upper_case_mapping_higharea [i2] : simple_lower_case_mapping_higharea [i2];
v = tab [cp - simple_case_map_ranges [i].start];
}
return v != 0 ? (gunichar) v : c;
}
return c;
}
gunichar
g_unichar_toupper (gunichar c)
{
return g_unichar_case (c, TRUE);
}
gunichar
g_unichar_tolower (gunichar c)
{
return g_unichar_case (c, FALSE);
}
gunichar
g_unichar_totitle (gunichar c)
{
guint8 i;
guint32 cp;
cp = (guint32) c;
for (i = 0; i < simple_titlecase_mapping_count; i++) {
if (simple_titlecase_mapping [i].codepoint == cp)
return simple_titlecase_mapping [i].title;
if (simple_titlecase_mapping [i].codepoint > cp)
/* it is ordered, hence no more match */
break;
}
return g_unichar_toupper (c);
}
gboolean
g_unichar_isxdigit (gunichar c)
{
return (g_unichar_xdigit_value (c) != -1);
}
gint
g_unichar_xdigit_value (gunichar c)
{
if (c >= 0x30 && c <= 0x39) /*0-9*/
return (c - 0x30);
if (c >= 0x41 && c <= 0x46) /*A-F*/
return (c - 0x37);
if (c >= 0x61 && c <= 0x66) /*a-f*/
return (c - 0x57);
return -1;
}
gboolean
g_unichar_isspace (gunichar c)
{
GUnicodeType type = g_unichar_type (c);
if (type == G_UNICODE_LINE_SEPARATOR ||
type == G_UNICODE_PARAGRAPH_SEPARATOR ||
type == G_UNICODE_SPACE_SEPARATOR)
return TRUE;
return FALSE;
}
/*
* This is broken, and assumes an UTF8 system, but will do for eglib's first user
*/
gchar *
g_filename_from_utf8 (const gchar *utf8string, gssize len, gsize *bytes_read, gsize *bytes_written, GError **error)
{
char *res;
if (len == -1)
len = strlen (utf8string);
res = g_malloc (len + 1);
g_strlcpy (res, utf8string, len + 1);
return res;
}
gboolean
g_get_charset (G_CONST_RETURN char **charset)
{
if (my_charset == NULL) {
#ifdef G_OS_WIN32
static char buf [14];
sprintf (buf, "CP%u", GetACP ());
my_charset = buf;
is_utf8 = FALSE;
#else
/* These shouldn't be heap allocated */
#if HAVE_LOCALCHARSET_H
my_charset = locale_charset ();
#elif defined(HAVE_LANGINFO_H)
my_charset = nl_langinfo (CODESET);
#else
my_charset = "UTF-8";
#endif
is_utf8 = strcmp (my_charset, "UTF-8") == 0;
#endif
}
if (charset != NULL)
*charset = my_charset;
return is_utf8;
}
gchar *
g_locale_to_utf8 (const gchar *opsysstring, gssize len, gsize *bytes_read, gsize *bytes_written, GError **error)
{
g_get_charset (NULL);
return g_convert (opsysstring, len, "UTF-8", my_charset, bytes_read, bytes_written, error);
}
gchar *
g_locale_from_utf8 (const gchar *utf8string, gssize len, gsize *bytes_read, gsize *bytes_written, GError **error)
{
g_get_charset (NULL);
return g_convert (utf8string, len, my_charset, "UTF-8", bytes_read, bytes_written, error);
}
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