diff -r 000000000000 -r e4d67989cc36 glib/libglib/src/guniprop.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/glib/libglib/src/guniprop.c Tue Feb 02 02:01:42 2010 +0200 @@ -0,0 +1,1065 @@ +/* guniprop.c - Unicode character properties. + * + * Copyright (C) 1999 Tom Tromey + * Copyright (C) 2000 Red Hat, Inc. + * Portions copyright (c) 2006 Nokia Corporation. All rights reserved. + * + * 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 +#include +#include + +#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 + **/ +EXPORT_C 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 + **/ +EXPORT_C 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 + **/ +EXPORT_C 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 + **/ +EXPORT_C 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 + **/ +EXPORT_C 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 + **/ +EXPORT_C 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 + **/ +EXPORT_C 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 + **/ +EXPORT_C 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 + **/ +EXPORT_C 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 + **/ +EXPORT_C 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 + **/ +EXPORT_C 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 + **/ +EXPORT_C 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 + **/ +EXPORT_C 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 . */ +EXPORT_C 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)); +} + +/** + * 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. + **/ +EXPORT_C 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. + **/ +EXPORT_C 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. + **/ +EXPORT_C 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. + **/ +EXPORT_C 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. + **/ +EXPORT_C 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. + **/ +EXPORT_C 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. + **/ +EXPORT_C 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. + **/ +EXPORT_C 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. + **/ +EXPORT_C 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 mirrored. 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 + **/ +EXPORT_C 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"