| /* 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 "config.h" |
| |
| #include <stdlib.h> |
| #include <stddef.h> |
| #include <string.h> |
| #include <locale.h> |
| |
| #include "glib.h" |
| #include "gunichartables.h" |
| #include "gmirroringtable.h" |
| #include "gunicodeprivate.h" |
| #include "galias.h" |
| |
| #define ATTR_TABLE(Page) (((Page) <= G_UNICODE_LAST_PAGE_PART1) \ |
| ? attr_table_part1[Page] \ |
| : attr_table_part2[(Page) - 0xe00]) |
| |
| #define ATTTABLE(Page, Char) \ |
| ((ATTR_TABLE(Page) == G_UNICODE_MAX_TABLE_INDEX) ? 0 : (attr_data[ATTR_TABLE(Page)][Char])) |
| |
| #define TTYPE_PART1(Page, Char) \ |
| ((type_table_part1[Page] >= G_UNICODE_MAX_TABLE_INDEX) \ |
| ? (type_table_part1[Page] - G_UNICODE_MAX_TABLE_INDEX) \ |
| : (type_data[type_table_part1[Page]][Char])) |
| |
| #define TTYPE_PART2(Page, Char) \ |
| ((type_table_part2[Page] >= G_UNICODE_MAX_TABLE_INDEX) \ |
| ? (type_table_part2[Page] - G_UNICODE_MAX_TABLE_INDEX) \ |
| : (type_data[type_table_part2[Page]][Char])) |
| |
| #define TYPE(Char) \ |
| (((Char) <= G_UNICODE_LAST_CHAR_PART1) \ |
| ? TTYPE_PART1 ((Char) >> 8, (Char) & 0xff) \ |
| : (((Char) >= 0xe0000 && (Char) <= G_UNICODE_LAST_CHAR) \ |
| ? TTYPE_PART2 (((Char) - 0xe0000) >> 8, (Char) & 0xff) \ |
| : G_UNICODE_UNASSIGNED)) |
| |
| |
| #define IS(Type, Class) (((guint)1 << (Type)) & (Class)) |
| #define OR(Type, Rest) (((guint)1 << (Type)) | (Rest)) |
| |
| |
| |
| #define ISDIGIT(Type) IS ((Type), \ |
| OR (G_UNICODE_DECIMAL_NUMBER, \ |
| OR (G_UNICODE_LETTER_NUMBER, \ |
| OR (G_UNICODE_OTHER_NUMBER, 0)))) |
| |
| #define ISALPHA(Type) IS ((Type), \ |
| OR (G_UNICODE_LOWERCASE_LETTER, \ |
| OR (G_UNICODE_UPPERCASE_LETTER, \ |
| OR (G_UNICODE_TITLECASE_LETTER, \ |
| OR (G_UNICODE_MODIFIER_LETTER, \ |
| OR (G_UNICODE_OTHER_LETTER, 0)))))) |
| |
| #define ISALDIGIT(Type) IS ((Type), \ |
| OR (G_UNICODE_DECIMAL_NUMBER, \ |
| OR (G_UNICODE_LETTER_NUMBER, \ |
| OR (G_UNICODE_OTHER_NUMBER, \ |
| OR (G_UNICODE_LOWERCASE_LETTER, \ |
| OR (G_UNICODE_UPPERCASE_LETTER, \ |
| OR (G_UNICODE_TITLECASE_LETTER, \ |
| OR (G_UNICODE_MODIFIER_LETTER, \ |
| OR (G_UNICODE_OTHER_LETTER, 0))))))))) |
| |
| #define ISMARK(Type) IS ((Type), \ |
| OR (G_UNICODE_NON_SPACING_MARK, \ |
| OR (G_UNICODE_COMBINING_MARK, \ |
| OR (G_UNICODE_ENCLOSING_MARK, 0)))) |
| |
| /** |
| * g_unichar_isalnum: |
| * @c: a Unicode character |
| * |
| * Determines whether a character is alphanumeric. |
| * Given some UTF-8 text, obtain a character value |
| * with g_utf8_get_char(). |
| * |
| * Return value: %TRUE if @c is an alphanumeric character |
| **/ |
| gboolean |
| g_unichar_isalnum (gunichar c) |
| { |
| return ISALDIGIT (TYPE (c)) ? TRUE : FALSE; |
| } |
| |
| /** |
| * g_unichar_isalpha: |
| * @c: a Unicode character |
| * |
| * Determines whether a character is alphabetic (i.e. a letter). |
| * Given some UTF-8 text, obtain a character value with |
| * g_utf8_get_char(). |
| * |
| * Return value: %TRUE if @c is an alphabetic character |
| **/ |
| gboolean |
| g_unichar_isalpha (gunichar c) |
| { |
| return ISALPHA (TYPE (c)) ? TRUE : FALSE; |
| } |
| |
| |
| /** |
| * g_unichar_iscntrl: |
| * @c: a Unicode character |
| * |
| * Determines whether a character is a control character. |
| * Given some UTF-8 text, obtain a character value with |
| * g_utf8_get_char(). |
| * |
| * Return value: %TRUE if @c is a control character |
| **/ |
| gboolean |
| g_unichar_iscntrl (gunichar c) |
| { |
| return TYPE (c) == G_UNICODE_CONTROL; |
| } |
| |
| /** |
| * g_unichar_isdigit: |
| * @c: a Unicode character |
| * |
| * Determines whether a character is numeric (i.e. a digit). This |
| * covers ASCII 0-9 and also digits in other languages/scripts. Given |
| * some UTF-8 text, obtain a character value with g_utf8_get_char(). |
| * |
| * Return value: %TRUE if @c is a digit |
| **/ |
| gboolean |
| g_unichar_isdigit (gunichar c) |
| { |
| return TYPE (c) == G_UNICODE_DECIMAL_NUMBER; |
| } |
| |
| |
| /** |
| * g_unichar_isgraph: |
| * @c: a Unicode character |
| * |
| * Determines whether a character is printable and not a space |
| * (returns %FALSE for control characters, format characters, and |
| * spaces). g_unichar_isprint() is similar, but returns %TRUE for |
| * spaces. Given some UTF-8 text, obtain a character value with |
| * g_utf8_get_char(). |
| * |
| * Return value: %TRUE if @c is printable unless it's a space |
| **/ |
| gboolean |
| g_unichar_isgraph (gunichar c) |
| { |
| return !IS (TYPE(c), |
| OR (G_UNICODE_CONTROL, |
| OR (G_UNICODE_FORMAT, |
| OR (G_UNICODE_UNASSIGNED, |
| OR (G_UNICODE_PRIVATE_USE, |
| OR (G_UNICODE_SURROGATE, |
| OR (G_UNICODE_SPACE_SEPARATOR, |
| 0))))))); |
| } |
| |
| /** |
| * g_unichar_islower: |
| * @c: a Unicode character |
| * |
| * Determines whether a character is a lowercase letter. |
| * Given some UTF-8 text, obtain a character value with |
| * g_utf8_get_char(). |
| * |
| * Return value: %TRUE if @c is a lowercase letter |
| **/ |
| gboolean |
| g_unichar_islower (gunichar c) |
| { |
| return TYPE (c) == G_UNICODE_LOWERCASE_LETTER; |
| } |
| |
| |
| /** |
| * g_unichar_isprint: |
| * @c: a Unicode character |
| * |
| * Determines whether a character is printable. |
| * Unlike g_unichar_isgraph(), returns %TRUE for spaces. |
| * Given some UTF-8 text, obtain a character value with |
| * g_utf8_get_char(). |
| * |
| * Return value: %TRUE if @c is printable |
| **/ |
| gboolean |
| g_unichar_isprint (gunichar c) |
| { |
| return !IS (TYPE(c), |
| OR (G_UNICODE_CONTROL, |
| OR (G_UNICODE_FORMAT, |
| OR (G_UNICODE_UNASSIGNED, |
| OR (G_UNICODE_PRIVATE_USE, |
| OR (G_UNICODE_SURROGATE, |
| 0)))))); |
| } |
| |
| /** |
| * g_unichar_ispunct: |
| * @c: a Unicode character |
| * |
| * Determines whether a character is punctuation or a symbol. |
| * Given some UTF-8 text, obtain a character value with |
| * g_utf8_get_char(). |
| * |
| * Return value: %TRUE if @c is a punctuation or symbol character |
| **/ |
| gboolean |
| g_unichar_ispunct (gunichar c) |
| { |
| return IS (TYPE(c), |
| OR (G_UNICODE_CONNECT_PUNCTUATION, |
| OR (G_UNICODE_DASH_PUNCTUATION, |
| OR (G_UNICODE_CLOSE_PUNCTUATION, |
| OR (G_UNICODE_FINAL_PUNCTUATION, |
| OR (G_UNICODE_INITIAL_PUNCTUATION, |
| OR (G_UNICODE_OTHER_PUNCTUATION, |
| OR (G_UNICODE_OPEN_PUNCTUATION, |
| OR (G_UNICODE_CURRENCY_SYMBOL, |
| OR (G_UNICODE_MODIFIER_SYMBOL, |
| OR (G_UNICODE_MATH_SYMBOL, |
| OR (G_UNICODE_OTHER_SYMBOL, |
| 0)))))))))))) ? TRUE : FALSE; |
| } |
| |
| /** |
| * g_unichar_isspace: |
| * @c: a Unicode character |
| * |
| * Determines whether a character is a space, tab, or line separator |
| * (newline, carriage return, etc.). Given some UTF-8 text, obtain a |
| * character value with g_utf8_get_char(). |
| * |
| * (Note: don't use this to do word breaking; you have to use |
| * Pango or equivalent to get word breaking right, the algorithm |
| * is fairly complex.) |
| * |
| * Return value: %TRUE if @c is a space character |
| **/ |
| gboolean |
| g_unichar_isspace (gunichar c) |
| { |
| switch (c) |
| { |
| /* special-case these since Unicode thinks they are not spaces */ |
| case '\t': |
| case '\n': |
| case '\r': |
| case '\f': |
| return TRUE; |
| break; |
| |
| default: |
| { |
| return IS (TYPE(c), |
| OR (G_UNICODE_SPACE_SEPARATOR, |
| OR (G_UNICODE_LINE_SEPARATOR, |
| OR (G_UNICODE_PARAGRAPH_SEPARATOR, |
| 0)))) ? TRUE : FALSE; |
| } |
| break; |
| } |
| } |
| |
| /** |
| * g_unichar_isupper: |
| * @c: a Unicode character |
| * |
| * Determines if a character is uppercase. |
| * |
| * Return value: %TRUE if @c is an uppercase character |
| **/ |
| 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 < G_N_ELEMENTS (title_table); ++i) |
| if (title_table[i][0] == c) |
| return 1; |
| return 0; |
| } |
| |
| /** |
| * g_unichar_isxdigit: |
| * @c: a Unicode character. |
| * |
| * Determines if a character is a hexidecimal digit. |
| * |
| * Return value: %TRUE if the character is a hexadecimal digit |
| **/ |
| gboolean |
| g_unichar_isxdigit (gunichar c) |
| { |
| return ((c >= 'a' && c <= 'f') |
| || (c >= 'A' && c <= 'F') |
| || ISDIGIT (TYPE (c))); |
| } |
| |
| /** |
| * 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) |
| { |
| return TYPE (c) != 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 FALSE; |
| |
| return (c <= 0x115f /* Hangul Jamo init. consonants */ |
| || c == 0x2329 || c == 0x232a /* angle brackets */ |
| || (c >= 0x2e80 && c <= 0xa4cf && (c < 0x302a || c > 0x302f) |
| && c != 0x303f && c != 0x3099 && c!= 0x309a) /* 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 <= 0xff60) /* Fullwidth Forms */ |
| || (c >= 0xffe0 && c <= 0xffe6) /* Fullwidth Forms */ |
| || (c >= 0x20000 && c <= 0x2fffd) /* CJK extra stuff */ |
| || (c >= 0x30000 && c <= 0x3fffd)); |
| } |
| |
| |
| struct Interval |
| { |
| gunichar start, end; |
| }; |
| |
| static int |
| interval_compare (const void *key, const void *elt) |
| { |
| gunichar c = GPOINTER_TO_UINT (key); |
| struct Interval *interval = elt; |
| |
| if (c < interval->start) |
| return -1; |
| if (c > interval->end) |
| return +1; |
| |
| return 0; |
| } |
| |
| /** |
| * g_unichar_iswide_cjk: |
| * @c: a Unicode character |
| * |
| * Determines if a character is typically rendered in a double-width |
| * cell under legacy East Asian locales. If a character is wide according to |
| * g_unichar_iswide(), then it is also reported wide with this function, but |
| * the converse is not necessarily true. See the |
| * <ulink url="http://www.unicode.org/reports/tr11/">Unicode Standard |
| * Annex #11</ulink> for details. |
| * |
| * Return value: %TRUE if the character is wide in legacy East Asian locales |
| * |
| * Since: 2.12 |
| */ |
| /* This function stolen from Markus Kuhn <Markus.Kuhn@cl.cam.ac.uk>. */ |
| gboolean |
| g_unichar_iswide_cjk (gunichar c) |
| { |
| /* sorted list of non-overlapping intervals of East Asian Ambiguous |
| * characters, generated by "uniset +WIDTH-A -cat=Me -cat=Mn -cat=Cf c" */ |
| static const struct Interval ambiguous[] = { |
| { 0x00A1, 0x00A1 }, { 0x00A4, 0x00A4 }, { 0x00A7, 0x00A8 }, |
| { 0x00AA, 0x00AA }, { 0x00AE, 0x00AE }, { 0x00B0, 0x00B4 }, |
| { 0x00B6, 0x00BA }, { 0x00BC, 0x00BF }, { 0x00C6, 0x00C6 }, |
| { 0x00D0, 0x00D0 }, { 0x00D7, 0x00D8 }, { 0x00DE, 0x00E1 }, |
| { 0x00E6, 0x00E6 }, { 0x00E8, 0x00EA }, { 0x00EC, 0x00ED }, |
| { 0x00F0, 0x00F0 }, { 0x00F2, 0x00F3 }, { 0x00F7, 0x00FA }, |
| { 0x00FC, 0x00FC }, { 0x00FE, 0x00FE }, { 0x0101, 0x0101 }, |
| { 0x0111, 0x0111 }, { 0x0113, 0x0113 }, { 0x011B, 0x011B }, |
| { 0x0126, 0x0127 }, { 0x012B, 0x012B }, { 0x0131, 0x0133 }, |
| { 0x0138, 0x0138 }, { 0x013F, 0x0142 }, { 0x0144, 0x0144 }, |
| { 0x0148, 0x014B }, { 0x014D, 0x014D }, { 0x0152, 0x0153 }, |
| { 0x0166, 0x0167 }, { 0x016B, 0x016B }, { 0x01CE, 0x01CE }, |
| { 0x01D0, 0x01D0 }, { 0x01D2, 0x01D2 }, { 0x01D4, 0x01D4 }, |
| { 0x01D6, 0x01D6 }, { 0x01D8, 0x01D8 }, { 0x01DA, 0x01DA }, |
| { 0x01DC, 0x01DC }, { 0x0251, 0x0251 }, { 0x0261, 0x0261 }, |
| { 0x02C4, 0x02C4 }, { 0x02C7, 0x02C7 }, { 0x02C9, 0x02CB }, |
| { 0x02CD, 0x02CD }, { 0x02D0, 0x02D0 }, { 0x02D8, 0x02DB }, |
| { 0x02DD, 0x02DD }, { 0x02DF, 0x02DF }, { 0x0391, 0x03A1 }, |
| { 0x03A3, 0x03A9 }, { 0x03B1, 0x03C1 }, { 0x03C3, 0x03C9 }, |
| { 0x0401, 0x0401 }, { 0x0410, 0x044F }, { 0x0451, 0x0451 }, |
| { 0x2010, 0x2010 }, { 0x2013, 0x2016 }, { 0x2018, 0x2019 }, |
| { 0x201C, 0x201D }, { 0x2020, 0x2022 }, { 0x2024, 0x2027 }, |
| { 0x2030, 0x2030 }, { 0x2032, 0x2033 }, { 0x2035, 0x2035 }, |
| { 0x203B, 0x203B }, { 0x203E, 0x203E }, { 0x2074, 0x2074 }, |
| { 0x207F, 0x207F }, { 0x2081, 0x2084 }, { 0x20AC, 0x20AC }, |
| { 0x2103, 0x2103 }, { 0x2105, 0x2105 }, { 0x2109, 0x2109 }, |
| { 0x2113, 0x2113 }, { 0x2116, 0x2116 }, { 0x2121, 0x2122 }, |
| { 0x2126, 0x2126 }, { 0x212B, 0x212B }, { 0x2153, 0x2154 }, |
| { 0x215B, 0x215E }, { 0x2160, 0x216B }, { 0x2170, 0x2179 }, |
| { 0x2190, 0x2199 }, { 0x21B8, 0x21B9 }, { 0x21D2, 0x21D2 }, |
| { 0x21D4, 0x21D4 }, { 0x21E7, 0x21E7 }, { 0x2200, 0x2200 }, |
| { 0x2202, 0x2203 }, { 0x2207, 0x2208 }, { 0x220B, 0x220B }, |
| { 0x220F, 0x220F }, { 0x2211, 0x2211 }, { 0x2215, 0x2215 }, |
| { 0x221A, 0x221A }, { 0x221D, 0x2220 }, { 0x2223, 0x2223 }, |
| { 0x2225, 0x2225 }, { 0x2227, 0x222C }, { 0x222E, 0x222E }, |
| { 0x2234, 0x2237 }, { 0x223C, 0x223D }, { 0x2248, 0x2248 }, |
| { 0x224C, 0x224C }, { 0x2252, 0x2252 }, { 0x2260, 0x2261 }, |
| { 0x2264, 0x2267 }, { 0x226A, 0x226B }, { 0x226E, 0x226F }, |
| { 0x2282, 0x2283 }, { 0x2286, 0x2287 }, { 0x2295, 0x2295 }, |
| { 0x2299, 0x2299 }, { 0x22A5, 0x22A5 }, { 0x22BF, 0x22BF }, |
| { 0x2312, 0x2312 }, { 0x2460, 0x24E9 }, { 0x24EB, 0x254B }, |
| { 0x2550, 0x2573 }, { 0x2580, 0x258F }, { 0x2592, 0x2595 }, |
| { 0x25A0, 0x25A1 }, { 0x25A3, 0x25A9 }, { 0x25B2, 0x25B3 }, |
| { 0x25B6, 0x25B7 }, { 0x25BC, 0x25BD }, { 0x25C0, 0x25C1 }, |
| { 0x25C6, 0x25C8 }, { 0x25CB, 0x25CB }, { 0x25CE, 0x25D1 }, |
| { 0x25E2, 0x25E5 }, { 0x25EF, 0x25EF }, { 0x2605, 0x2606 }, |
| { 0x2609, 0x2609 }, { 0x260E, 0x260F }, { 0x2614, 0x2615 }, |
| { 0x261C, 0x261C }, { 0x261E, 0x261E }, { 0x2640, 0x2640 }, |
| { 0x2642, 0x2642 }, { 0x2660, 0x2661 }, { 0x2663, 0x2665 }, |
| { 0x2667, 0x266A }, { 0x266C, 0x266D }, { 0x266F, 0x266F }, |
| { 0x273D, 0x273D }, { 0x2776, 0x277F }, { 0xE000, 0xF8FF }, |
| { 0xFFFD, 0xFFFD }, { 0xF0000, 0xFFFFD }, { 0x100000, 0x10FFFD } |
| }; |
| |
| if (g_unichar_iswide (c)) |
| return TRUE; |
| |
| if (bsearch (GUINT_TO_POINTER (c), ambiguous, G_N_ELEMENTS (ambiguous), sizeof ambiguous[0], |
| interval_compare)) |
| return TRUE; |
| |
| return FALSE; |
| } |
| |
| |
| /** |
| * g_unichar_toupper: |
| * @c: a Unicode character |
| * |
| * Converts a character to uppercase. |
| * |
| * Return value: the result of converting @c to uppercase. |
| * If @c is not an lowercase or titlecase character, |
| * or has no upper case equivalent @c is returned unchanged. |
| **/ |
| gunichar |
| g_unichar_toupper (gunichar c) |
| { |
| int t = TYPE (c); |
| if (t == G_UNICODE_LOWERCASE_LETTER) |
| { |
| gunichar val = ATTTABLE (c >> 8, c & 0xff); |
| if (val >= 0x1000000) |
| { |
| const gchar *p = special_case_table + val - 0x1000000; |
| return g_utf8_get_char (p); |
| } |
| else |
| return val ? val : c; |
| } |
| else if (t == G_UNICODE_TITLECASE_LETTER) |
| { |
| unsigned int i; |
| for (i = 0; i < G_N_ELEMENTS (title_table); ++i) |
| { |
| if (title_table[i][0] == c) |
| return title_table[i][1]; |
| } |
| } |
| return c; |
| } |
| |
| /** |
| * g_unichar_tolower: |
| * @c: a Unicode character. |
| * |
| * Converts a character to lower case. |
| * |
| * Return value: the result of converting @c to lower case. |
| * If @c is not an upperlower or titlecase character, |
| * or has no lowercase equivalent @c is returned unchanged. |
| **/ |
| gunichar |
| g_unichar_tolower (gunichar c) |
| { |
| int t = TYPE (c); |
| if (t == G_UNICODE_UPPERCASE_LETTER) |
| { |
| gunichar val = ATTTABLE (c >> 8, c & 0xff); |
| if (val >= 0x1000000) |
| { |
| const gchar *p = special_case_table + val - 0x1000000; |
| return g_utf8_get_char (p); |
| } |
| else |
| return val ? val : c; |
| } |
| else if (t == G_UNICODE_TITLECASE_LETTER) |
| { |
| unsigned int i; |
| for (i = 0; i < G_N_ELEMENTS (title_table); ++i) |
| { |
| if (title_table[i][0] == c) |
| return title_table[i][2]; |
| } |
| } |
| return c; |
| } |
| |
| /** |
| * g_unichar_totitle: |
| * @c: a Unicode character |
| * |
| * Converts 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 < G_N_ELEMENTS (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_digit_value: |
| * @c: a Unicode character |
| * |
| * Determines the numeric value of a character as a decimal |
| * digit. |
| * |
| * 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 |
| * digit. |
| * |
| * 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' + 10; |
| if (c >= 'a' && c <= 'f') |
| return c - 'a' + 10; |
| 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 type of the character. |
| **/ |
| GUnicodeType |
| g_unichar_type (gunichar c) |
| { |
| return TYPE (c); |
| } |
| |
| /* |
| * Case mapping functions |
| */ |
| |
| typedef enum { |
| LOCALE_NORMAL, |
| LOCALE_TURKIC, |
| LOCALE_LITHUANIAN |
| } LocaleType; |
| |
| static LocaleType |
| get_locale_type (void) |
| { |
| #ifdef G_OS_WIN32 |
| char *tem = g_win32_getlocale (); |
| char locale[2]; |
| |
| locale[0] = tem[0]; |
| locale[1] = tem[1]; |
| g_free (tem); |
| #else |
| const char *locale = setlocale (LC_CTYPE, NULL); |
| #endif |
| |
| switch (locale[0]) |
| { |
| case 'a': |
| if (locale[1] == 'z') |
| return LOCALE_TURKIC; |
| break; |
| case 'l': |
| if (locale[1] == 't') |
| return LOCALE_LITHUANIAN; |
| break; |
| case 't': |
| if (locale[1] == 'r') |
| return LOCALE_TURKIC; |
| break; |
| } |
| |
| return LOCALE_NORMAL; |
| } |
| |
| static gint |
| output_marks (const char **p_inout, |
| char *out_buffer, |
| gboolean remove_dot) |
| { |
| const char *p = *p_inout; |
| gint len = 0; |
| |
| while (*p) |
| { |
| gunichar c = g_utf8_get_char (p); |
| |
| if (ISMARK (TYPE (c))) |
| { |
| if (!remove_dot || c != 0x307 /* COMBINING DOT ABOVE */) |
| len += g_unichar_to_utf8 (c, out_buffer ? out_buffer + len : NULL); |
| p = g_utf8_next_char (p); |
| } |
| else |
| break; |
| } |
| |
| *p_inout = p; |
| return len; |
| } |
| |
| static gint |
| output_special_case (gchar *out_buffer, |
| int offset, |
| int type, |
| int which) |
| { |
| const gchar *p = special_case_table + offset; |
| gint len; |
| |
| if (type != G_UNICODE_TITLECASE_LETTER) |
| p = g_utf8_next_char (p); |
| |
| if (which == 1) |
| p += strlen (p) + 1; |
| |
| len = strlen (p); |
| if (out_buffer) |
| memcpy (out_buffer, p, len); |
| |
| return len; |
| } |
| |
| static gsize |
| real_toupper (const gchar *str, |
| gssize max_len, |
| gchar *out_buffer, |
| LocaleType locale_type) |
| { |
| const gchar *p = str; |
| const char *last = NULL; |
| gsize len = 0; |
| gboolean last_was_i = FALSE; |
| |
| while ((max_len < 0 || p < str + max_len) && *p) |
| { |
| gunichar c = g_utf8_get_char (p); |
| int t = TYPE (c); |
| gunichar val; |
| |
| last = p; |
| p = g_utf8_next_char (p); |
| |
| if (locale_type == LOCALE_LITHUANIAN) |
| { |
| if (c == 'i') |
| last_was_i = TRUE; |
| else |
| { |
| if (last_was_i) |
| { |
| /* Nasty, need to remove any dot above. Though |
| * I think only E WITH DOT ABOVE occurs in practice |
| * which could simplify this considerably. |
| */ |
| gsize decomp_len, i; |
| gunichar *decomp; |
| |
| decomp = g_unicode_canonical_decomposition (c, &decomp_len); |
| for (i=0; i < decomp_len; i++) |
| { |
| if (decomp[i] != 0x307 /* COMBINING DOT ABOVE */) |
| len += g_unichar_to_utf8 (g_unichar_toupper (decomp[i]), out_buffer ? out_buffer + len : NULL); |
| } |
| g_free (decomp); |
| |
| len += output_marks (&p, out_buffer ? out_buffer + len : NULL, TRUE); |
| |
| continue; |
| } |
| |
| if (!ISMARK (t)) |
| last_was_i = FALSE; |
| } |
| } |
| |
| if (locale_type == LOCALE_TURKIC && c == 'i') |
| { |
| /* i => LATIN CAPITAL LETTER I WITH DOT ABOVE */ |
| len += g_unichar_to_utf8 (0x130, out_buffer ? out_buffer + len : NULL); |
| } |
| else if (c == 0x0345) /* COMBINING GREEK YPOGEGRAMMENI */ |
| { |
| /* Nasty, need to move it after other combining marks .. this would go away if |
| * we normalized first. |
| */ |
| len += output_marks (&p, out_buffer ? out_buffer + len : NULL, FALSE); |
| |
| /* And output as GREEK CAPITAL LETTER IOTA */ |
| len += g_unichar_to_utf8 (0x399, out_buffer ? out_buffer + len : NULL); |
| } |
| else if (IS (t, |
| OR (G_UNICODE_LOWERCASE_LETTER, |
| OR (G_UNICODE_TITLECASE_LETTER, |
| 0)))) |
| { |
| val = ATTTABLE (c >> 8, c & 0xff); |
| |
| if (val >= 0x1000000) |
| { |
| len += output_special_case (out_buffer ? out_buffer + len : NULL, val - 0x1000000, t, |
| t == G_UNICODE_LOWERCASE_LETTER ? 0 : 1); |
| } |
| else |
| { |
| if (t == G_UNICODE_TITLECASE_LETTER) |
| { |
| unsigned int i; |
| for (i = 0; i < G_N_ELEMENTS (title_table); ++i) |
| { |
| if (title_table[i][0] == c) |
| val = title_table[i][1]; |
| } |
| } |
| |
| len += g_unichar_to_utf8 (val, out_buffer ? out_buffer + len : NULL); |
| } |
| } |
| else |
| { |
| gsize char_len = g_utf8_skip[*(guchar *)last]; |
| |
| if (out_buffer) |
| memcpy (out_buffer + len, last, char_len); |
| |
| len += char_len; |
| } |
| |
| } |
| |
| return len; |
| } |
| |
| /** |
| * g_utf8_strup: |
| * @str: a UTF-8 encoded string |
| * @len: length of @str, in bytes, or -1 if @str is nul-terminated. |
| * |
| * Converts all Unicode characters in the string that have a case |
| * to uppercase. The exact manner that this is done depends |
| * on the current locale, and may result in the number of |
| * characters in the string increasing. (For instance, the |
| * German ess-zet will be changed to SS.) |
| * |
| * Return value: a newly allocated string, with all characters |
| * converted to uppercase. |
| **/ |
| gchar * |
| g_utf8_strup (const gchar *str, |
| gssize len) |
| { |
| gsize result_len; |
| LocaleType locale_type; |
| gchar *result; |
| |
| g_return_val_if_fail (str != NULL, NULL); |
| |
| locale_type = get_locale_type (); |
| |
| /* |
| * We use a two pass approach to keep memory management simple |
| */ |
| result_len = real_toupper (str, len, NULL, locale_type); |
| result = g_malloc (result_len + 1); |
| real_toupper (str, len, result, locale_type); |
| result[result_len] = '\0'; |
| |
| return result; |
| } |
| |
| /* traverses the string checking for characters with combining class == 230 |
| * until a base character is found */ |
| static gboolean |
| has_more_above (const gchar *str) |
| { |
| const gchar *p = str; |
| gint combining_class; |
| |
| while (*p) |
| { |
| combining_class = _g_unichar_combining_class (g_utf8_get_char (p)); |
| if (combining_class == 230) |
| return TRUE; |
| else if (combining_class == 0) |
| break; |
| |
| p = g_utf8_next_char (p); |
| } |
| |
| return FALSE; |
| } |
| |
| static gsize |
| real_tolower (const gchar *str, |
| gssize max_len, |
| gchar *out_buffer, |
| LocaleType locale_type) |
| { |
| const gchar *p = str; |
| const char *last = NULL; |
| gsize len = 0; |
| |
| while ((max_len < 0 || p < str + max_len) && *p) |
| { |
| gunichar c = g_utf8_get_char (p); |
| int t = TYPE (c); |
| gunichar val; |
| |
| last = p; |
| p = g_utf8_next_char (p); |
| |
| if (locale_type == LOCALE_TURKIC && c == 'I') |
| { |
| if (g_utf8_get_char (p) == 0x0307) |
| { |
| /* I + COMBINING DOT ABOVE => i (U+0069) */ |
| len += g_unichar_to_utf8 (0x0069, out_buffer ? out_buffer + len : NULL); |
| p = g_utf8_next_char (p); |
| } |
| else |
| { |
| /* I => LATIN SMALL LETTER DOTLESS I */ |
| len += g_unichar_to_utf8 (0x131, out_buffer ? out_buffer + len : NULL); |
| } |
| } |
| /* Introduce an explicit dot above when lowercasing capital I's and J's |
| * whenever there are more accents above. [SpecialCasing.txt] */ |
| else if (locale_type == LOCALE_LITHUANIAN && |
| (c == 0x00cc || c == 0x00cd || c == 0x0128)) |
| { |
| len += g_unichar_to_utf8 (0x0069, out_buffer ? out_buffer + len : NULL); |
| len += g_unichar_to_utf8 (0x0307, out_buffer ? out_buffer + len : NULL); |
| |
| switch (c) |
| { |
| case 0x00cc: |
| len += g_unichar_to_utf8 (0x0300, out_buffer ? out_buffer + len : NULL); |
| break; |
| case 0x00cd: |
| len += g_unichar_to_utf8 (0x0301, out_buffer ? out_buffer + len : NULL); |
| break; |
| case 0x0128: |
| len += g_unichar_to_utf8 (0x0303, out_buffer ? out_buffer + len : NULL); |
| break; |
| } |
| } |
| else if (locale_type == LOCALE_LITHUANIAN && |
| (c == 'I' || c == 'J' || c == 0x012e) && |
| has_more_above (p)) |
| { |
| len += g_unichar_to_utf8 (g_unichar_tolower (c), out_buffer ? out_buffer + len : NULL); |
| len += g_unichar_to_utf8 (0x0307, out_buffer ? out_buffer + len : NULL); |
| } |
| else if (c == 0x03A3) /* GREEK CAPITAL LETTER SIGMA */ |
| { |
| if ((max_len < 0 || p < str + max_len) && *p) |
| { |
| gunichar next_c = g_utf8_get_char (p); |
| int next_type = TYPE(next_c); |
| |
| /* SIGMA mapps differently depending on whether it is |
| * final or not. The following simplified test would |
| * fail in the case of combining marks following the |
| * sigma, but I don't think that occurs in real text. |
| * The test here matches that in ICU. |
| */ |
| if (ISALPHA (next_type)) /* Lu,Ll,Lt,Lm,Lo */ |
| val = 0x3c3; /* GREEK SMALL SIGMA */ |
| else |
| val = 0x3c2; /* GREEK SMALL FINAL SIGMA */ |
| } |
| else |
| val = 0x3c2; /* GREEK SMALL FINAL SIGMA */ |
| |
| len += g_unichar_to_utf8 (val, out_buffer ? out_buffer + len : NULL); |
| } |
| else if (IS (t, |
| OR (G_UNICODE_UPPERCASE_LETTER, |
| OR (G_UNICODE_TITLECASE_LETTER, |
| 0)))) |
| { |
| val = ATTTABLE (c >> 8, c & 0xff); |
| |
| if (val >= 0x1000000) |
| { |
| len += output_special_case (out_buffer ? out_buffer + len : NULL, val - 0x1000000, t, 0); |
| } |
| else |
| { |
| if (t == G_UNICODE_TITLECASE_LETTER) |
| { |
| unsigned int i; |
| for (i = 0; i < G_N_ELEMENTS (title_table); ++i) |
| { |
| if (title_table[i][0] == c) |
| val = title_table[i][2]; |
| } |
| } |
| |
| len += g_unichar_to_utf8 (val, out_buffer ? out_buffer + len : NULL); |
| } |
| } |
| else |
| { |
| gsize char_len = g_utf8_skip[*(guchar *)last]; |
| |
| if (out_buffer) |
| memcpy (out_buffer + len, last, char_len); |
| |
| len += char_len; |
| } |
| |
| } |
| |
| return len; |
| } |
| |
| /** |
| * g_utf8_strdown: |
| * @str: a UTF-8 encoded string |
| * @len: length of @str, in bytes, or -1 if @str is nul-terminated. |
| * |
| * Converts all Unicode characters in the string that have a case |
| * to lowercase. The exact manner that this is done depends |
| * on the current locale, and may result in the number of |
| * characters in the string changing. |
| * |
| * Return value: a newly allocated string, with all characters |
| * converted to lowercase. |
| **/ |
| gchar * |
| g_utf8_strdown (const gchar *str, |
| gssize len) |
| { |
| gsize result_len; |
| LocaleType locale_type; |
| gchar *result; |
| |
| g_return_val_if_fail (str != NULL, NULL); |
| |
| locale_type = get_locale_type (); |
| |
| /* |
| * We use a two pass approach to keep memory management simple |
| */ |
| result_len = real_tolower (str, len, NULL, locale_type); |
| result = g_malloc (result_len + 1); |
| real_tolower (str, len, result, locale_type); |
| result[result_len] = '\0'; |
| |
| return result; |
| } |
| |
| /** |
| * g_utf8_casefold: |
| * @str: a UTF-8 encoded string |
| * @len: length of @str, in bytes, or -1 if @str is nul-terminated. |
| * |
| * Converts a string into a form that is independent of case. The |
| * result will not correspond to any particular case, but can be |
| * compared for equality or ordered with the results of calling |
| * g_utf8_casefold() on other strings. |
| * |
| * Note that calling g_utf8_casefold() followed by g_utf8_collate() is |
| * only an approximation to the correct linguistic case insensitive |
| * ordering, though it is a fairly good one. Getting this exactly |
| * right would require a more sophisticated collation function that |
| * takes case sensitivity into account. GLib does not currently |
| * provide such a function. |
| * |
| * Return value: a newly allocated string, that is a |
| * case independent form of @str. |
| **/ |
| gchar * |
| g_utf8_casefold (const gchar *str, |
| gssize len) |
| { |
| GString *result; |
| const char *p; |
| |
| g_return_val_if_fail (str != NULL, NULL); |
| |
| result = g_string_new (NULL); |
| p = str; |
| while ((len < 0 || p < str + len) && *p) |
| { |
| gunichar ch = g_utf8_get_char (p); |
| |
| int start = 0; |
| int end = G_N_ELEMENTS (casefold_table); |
| |
| if (ch >= casefold_table[start].ch && |
| ch <= casefold_table[end - 1].ch) |
| { |
| while (TRUE) |
| { |
| int half = (start + end) / 2; |
| if (ch == casefold_table[half].ch) |
| { |
| g_string_append (result, casefold_table[half].data); |
| goto next; |
| } |
| else if (half == start) |
| break; |
| else if (ch > casefold_table[half].ch) |
| start = half; |
| else |
| end = half; |
| } |
| } |
| |
| g_string_append_unichar (result, g_unichar_tolower (ch)); |
| |
| next: |
| p = g_utf8_next_char (p); |
| } |
| |
| return g_string_free (result, FALSE); |
| } |
| |
| /** |
| * g_unichar_get_mirror_char: |
| * @ch: a Unicode character |
| * @mirrored_ch: location to store the mirrored character |
| * |
| * In Unicode, some characters are <firstterm>mirrored</firstterm>. This |
| * means that their images are mirrored horizontally in text that is laid |
| * out from right to left. For instance, "(" would become its mirror image, |
| * ")", in right-to-left text. |
| * |
| * If @ch has the Unicode mirrored property and there is another unicode |
| * character that typically has a glyph that is the mirror image of @ch's |
| * glyph and @mirrored_ch is set, it puts that character in the address |
| * pointed to by @mirrored_ch. Otherwise the original character is put. |
| * |
| * Return value: %TRUE if @ch has a mirrored character, %FALSE otherwise |
| * |
| * Since: 2.4 |
| **/ |
| gboolean |
| g_unichar_get_mirror_char (gunichar ch, |
| gunichar *mirrored_ch) |
| { |
| gboolean found; |
| gunichar mirrored; |
| |
| mirrored = GLIB_GET_MIRRORING(ch); |
| |
| found = ch != mirrored; |
| if (mirrored_ch) |
| *mirrored_ch = mirrored; |
| |
| return found; |
| |
| } |
| |
| #define __G_UNIPROP_C__ |
| #include "galiasdef.c" |