mirror of
https://gitlab.gnome.org/GNOME/glib.git
synced 2024-12-26 15:36:14 +01:00
c9bd7542e1
Wed Jul 26 12:59:31 2000 Tim Janik <timj@gtk.org>
* *.[hc]: applied patch from Andreas Persenius <ndap@swipnet.se> that
updates the license headers to the GNU Lesser General Public License,
as well as updating the copyright year to 2000.
356 lines
8.4 KiB
C
356 lines
8.4 KiB
C
/* guniprop.c - Unicode character properties.
|
|
*
|
|
* Copyright (C) 1999 Tom Tromey
|
|
* Copyright (C) 2000 Red Hat, Inc.
|
|
*
|
|
* This library 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 of the License, or (at your option) any later version.
|
|
*
|
|
* This library 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 this library; if not, write to the
|
|
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
* Boston, MA 02111-1307, USA.
|
|
*/
|
|
|
|
#include "glib.h"
|
|
#include "gunichartables.h"
|
|
|
|
#include <config.h>
|
|
|
|
#include <stddef.h>
|
|
|
|
#define asize(x) ((sizeof (x)) / sizeof (x[0]))
|
|
|
|
#define ATTTABLE(Page, Char) \
|
|
((attr_table[Page] == 0) ? 0 : (attr_table[Page][Char]))
|
|
|
|
/* We cheat a bit and cast type values to (char *). We detect these
|
|
using the &0xff trick. */
|
|
#define TTYPE(Page, Char) \
|
|
(((((int) type_table[Page]) & 0xff) == ((int) type_table[Page])) \
|
|
? ((int) (type_table[Page])) \
|
|
: (type_table[Page][Char]))
|
|
|
|
#define TYPE(Char) (((Char) > (G_UNICODE_LAST_CHAR)) ? G_UNICODE_UNASSIGNED : TTYPE ((Char) >> 8, (Char) & 0xff))
|
|
|
|
#define ISDIGIT(Type) ((Type) == G_UNICODE_DECIMAL_NUMBER \
|
|
|| (Type) == G_UNICODE_LETTER_NUMBER \
|
|
|| (Type) == G_UNICODE_OTHER_NUMBER)
|
|
|
|
#define ISALPHA(Type) ((Type) == G_UNICODE_LOWERCASE_LETTER \
|
|
|| (Type) == G_UNICODE_UPPERCASE_LETTER \
|
|
|| (Type) == G_UNICODE_TITLECASE_LETTER \
|
|
|| (Type) == G_UNICODE_MODIFIER_LETTER \
|
|
|| (Type) == G_UNICODE_OTHER_LETTER)
|
|
|
|
gboolean
|
|
g_unichar_isalnum (gunichar c)
|
|
{
|
|
int t = TYPE (c);
|
|
return ISDIGIT (t) || ISALPHA (t);
|
|
}
|
|
|
|
gboolean
|
|
g_unichar_isalpha (gunichar c)
|
|
{
|
|
int t = TYPE (c);
|
|
return ISALPHA (t);
|
|
}
|
|
|
|
gboolean
|
|
g_unichar_iscntrl (gunichar c)
|
|
{
|
|
return TYPE (c) == G_UNICODE_CONTROL;
|
|
}
|
|
|
|
gboolean
|
|
g_unichar_isdigit (gunichar c)
|
|
{
|
|
return TYPE (c) == G_UNICODE_DECIMAL_NUMBER;
|
|
}
|
|
|
|
gboolean
|
|
g_unichar_isgraph (gunichar c)
|
|
{
|
|
int t = TYPE (c);
|
|
return (t != G_UNICODE_CONTROL
|
|
&& t != G_UNICODE_FORMAT
|
|
&& t != G_UNICODE_UNASSIGNED
|
|
&& t != G_UNICODE_PRIVATE_USE
|
|
&& t != G_UNICODE_SURROGATE
|
|
&& t != G_UNICODE_SPACE_SEPARATOR);
|
|
}
|
|
|
|
gboolean
|
|
g_unichar_islower (gunichar c)
|
|
{
|
|
return TYPE (c) == G_UNICODE_LOWERCASE_LETTER;
|
|
}
|
|
|
|
gboolean
|
|
g_unichar_isprint (gunichar c)
|
|
{
|
|
int t = TYPE (c);
|
|
return (t != G_UNICODE_CONTROL
|
|
&& t != G_UNICODE_FORMAT
|
|
&& t != G_UNICODE_UNASSIGNED
|
|
&& t != G_UNICODE_PRIVATE_USE
|
|
&& t != G_UNICODE_SURROGATE);
|
|
}
|
|
|
|
gboolean
|
|
g_unichar_ispunct (gunichar c)
|
|
{
|
|
int t = TYPE (c);
|
|
return (t == G_UNICODE_CONNECT_PUNCTUATION || t == G_UNICODE_DASH_PUNCTUATION
|
|
|| t == G_UNICODE_CLOSE_PUNCTUATION || t == G_UNICODE_FINAL_PUNCTUATION
|
|
|| t == G_UNICODE_INITIAL_PUNCTUATION || t == G_UNICODE_OTHER_PUNCTUATION
|
|
|| t == G_UNICODE_OPEN_PUNCTUATION);
|
|
}
|
|
|
|
gboolean
|
|
g_unichar_isspace (gunichar c)
|
|
{
|
|
int t = TYPE (c);
|
|
return (t == G_UNICODE_SPACE_SEPARATOR || t == G_UNICODE_LINE_SEPARATOR
|
|
|| t == G_UNICODE_PARAGRAPH_SEPARATOR);
|
|
}
|
|
|
|
/**
|
|
* g_unichar_isupper:
|
|
* @c: a unicode character
|
|
*
|
|
* Determines if a character is uppercase.
|
|
*
|
|
* Return value:
|
|
**/
|
|
gboolean
|
|
g_unichar_isupper (gunichar c)
|
|
{
|
|
return TYPE (c) == G_UNICODE_UPPERCASE_LETTER;
|
|
}
|
|
|
|
/**
|
|
* g_unichar_istitle:
|
|
* @c: a unicode character
|
|
*
|
|
* Determines if a character is titlecase. Some characters in
|
|
* Unicode which are composites, such as the DZ digraph
|
|
* have three case variants instead of just two. The titlecase
|
|
* form is used at the beginning of a word where only the
|
|
* first letter is capitalized. The titlecase form of the DZ
|
|
* digraph is U+01F2 LATIN CAPITAL LETTTER D WITH SMALL LETTER Z
|
|
*
|
|
* Return value: %TRUE if the character is titlecase.
|
|
**/
|
|
gboolean
|
|
g_unichar_istitle (gunichar c)
|
|
{
|
|
unsigned int i;
|
|
for (i = 0; i < asize (title_table); ++i)
|
|
if (title_table[i][0] == c)
|
|
return 1;
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* g_unichar_isxdigit:
|
|
* @c: a unicode character.
|
|
*
|
|
* Determines if a characters is a hexidecimal digit
|
|
*
|
|
* Return value: %TRUE if the character is a hexidecimal digit.
|
|
**/
|
|
gboolean
|
|
g_unichar_isxdigit (gunichar c)
|
|
{
|
|
int t = TYPE (c);
|
|
return ((c >= 'a' && c <= 'f')
|
|
|| (c >= 'A' && c <= 'F')
|
|
|| ISDIGIT (t));
|
|
}
|
|
|
|
/**
|
|
* g_unichar_isdefined:
|
|
* @c: a unicode character
|
|
*
|
|
* Determines if a given character is assigned in the Unicode
|
|
* standard
|
|
*
|
|
* Return value: %TRUE if the character has an assigned value.
|
|
**/
|
|
gboolean
|
|
g_unichar_isdefined (gunichar c)
|
|
{
|
|
int t = TYPE (c);
|
|
return t != G_UNICODE_UNASSIGNED;
|
|
}
|
|
|
|
/**
|
|
* g_unichar_iswide:
|
|
* @c: a unicode character
|
|
*
|
|
* Determines if a character is typically rendered in a double-width
|
|
* cell.
|
|
*
|
|
* Return value: %TRUE if the character is wide.
|
|
**/
|
|
/* This function stolen from Markus Kuhn <Markus.Kuhn@cl.cam.ac.uk>. */
|
|
gboolean
|
|
g_unichar_iswide (gunichar c)
|
|
{
|
|
if (c < 0x1100)
|
|
return 0;
|
|
|
|
return ((c >= 0x1100 && c <= 0x115f) /* Hangul Jamo */
|
|
|| (c >= 0x2e80 && c <= 0xa4cf && (c & ~0x0011) != 0x300a &&
|
|
c != 0x303f) /* CJK ... Yi */
|
|
|| (c >= 0xac00 && c <= 0xd7a3) /* Hangul Syllables */
|
|
|| (c >= 0xf900 && c <= 0xfaff) /* CJK Compatibility Ideographs */
|
|
|| (c >= 0xfe30 && c <= 0xfe6f) /* CJK Compatibility Forms */
|
|
|| (c >= 0xff00 && c <= 0xff5f) /* Fullwidth Forms */
|
|
|| (c >= 0xffe0 && c <= 0xffe6));
|
|
}
|
|
|
|
/**
|
|
* g_unichar_toupper:
|
|
* @c: a unicode character
|
|
*
|
|
* Convert a character to uppercase.
|
|
*
|
|
* Return value: the result of converting @c to uppercase.
|
|
* If @c is not an lowercase or titlecase character,
|
|
* @c is returned unchanged.
|
|
**/
|
|
gunichar
|
|
g_unichar_toupper (gunichar c)
|
|
{
|
|
int t = TYPE (c);
|
|
if (t == G_UNICODE_LOWERCASE_LETTER)
|
|
return ATTTABLE (c >> 8, c & 0xff);
|
|
else if (t == G_UNICODE_TITLECASE_LETTER)
|
|
{
|
|
unsigned int i;
|
|
for (i = 0; i < asize (title_table); ++i)
|
|
{
|
|
if (title_table[i][0] == c)
|
|
return title_table[i][1];
|
|
}
|
|
}
|
|
return c;
|
|
}
|
|
|
|
/**
|
|
* g_unichar_tolower:
|
|
* @c: a unicode character.
|
|
*
|
|
* Convert a character to lower case
|
|
*
|
|
e * Return value: the result of converting @c to lower case.
|
|
* If @c is not an upperlower or titlecase character,
|
|
* @c is returned unchanged.
|
|
**/
|
|
gunichar
|
|
g_unichar_tolower (gunichar c)
|
|
{
|
|
int t = TYPE (c);
|
|
if (t == G_UNICODE_UPPERCASE_LETTER)
|
|
return ATTTABLE (c >> 8, c & 0xff);
|
|
else if (t == G_UNICODE_TITLECASE_LETTER)
|
|
{
|
|
unsigned int i;
|
|
for (i = 0; i < asize (title_table); ++i)
|
|
{
|
|
if (title_table[i][0] == c)
|
|
return title_table[i][2];
|
|
}
|
|
}
|
|
return c;
|
|
}
|
|
|
|
/**
|
|
* g_unichar_totitle:
|
|
* @c: a unicode character
|
|
*
|
|
* Convert a character to the titlecase
|
|
*
|
|
* Return value: the result of converting @c to titlecase.
|
|
* If @c is not an uppercase or lowercase character,
|
|
* @c is returned unchanged.
|
|
**/
|
|
gunichar
|
|
g_unichar_totitle (gunichar c)
|
|
{
|
|
unsigned int i;
|
|
for (i = 0; i < asize (title_table); ++i)
|
|
{
|
|
if (title_table[i][0] == c || title_table[i][1] == c
|
|
|| title_table[i][2] == c)
|
|
return title_table[i][0];
|
|
}
|
|
return (TYPE (c) == G_UNICODE_LOWERCASE_LETTER
|
|
? ATTTABLE (c >> 8, c & 0xff)
|
|
: c);
|
|
}
|
|
|
|
/**
|
|
* g_unichar_xdigit_value:
|
|
* @c: a unicode character
|
|
*
|
|
* Determines the numeric value of a character as a decimal
|
|
* degital.
|
|
*
|
|
* Return value: If @c is a decimal digit (according to
|
|
* `g_unichar_isdigit'), its numeric value. Otherwise, -1.
|
|
**/
|
|
int
|
|
g_unichar_digit_value (gunichar c)
|
|
{
|
|
if (TYPE (c) == G_UNICODE_DECIMAL_NUMBER)
|
|
return ATTTABLE (c >> 8, c & 0xff);
|
|
return -1;
|
|
}
|
|
|
|
/**
|
|
* g_unichar_xdigit_value:
|
|
* @c: a unicode character
|
|
*
|
|
* Determines the numeric value of a character as a hexidecimal
|
|
* degital.
|
|
*
|
|
* Return value: If @c is a hex digit (according to
|
|
* `g_unichar_isxdigit'), its numeric value. Otherwise, -1.
|
|
**/
|
|
int
|
|
g_unichar_xdigit_value (gunichar c)
|
|
{
|
|
if (c >= 'A' && c <= 'F')
|
|
return c - 'A' + 1;
|
|
if (c >= 'a' && c <= 'f')
|
|
return c - 'a' + 1;
|
|
if (TYPE (c) == G_UNICODE_DECIMAL_NUMBER)
|
|
return ATTTABLE (c >> 8, c & 0xff);
|
|
return -1;
|
|
}
|
|
|
|
/**
|
|
* g_unichar_type:
|
|
* @c: a unicode character
|
|
*
|
|
* Classifies a unicode character by type.
|
|
*
|
|
* Return value: the typ of the character.
|
|
**/
|
|
GUnicodeType
|
|
g_unichar_type (gunichar c)
|
|
{
|
|
return TYPE (c);
|
|
}
|