#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 "gscripttable.h"
+#include "gunicodeprivate.h"
+#include "galias.h"
#define ATTR_TABLE(Page) (((Page) <= G_UNICODE_LAST_PAGE_PART1) \
? attr_table_part1[Page] \
: G_UNICODE_UNASSIGNED))
-#define ISDIGIT(Type) ((Type) == G_UNICODE_DECIMAL_NUMBER \
- || (Type) == G_UNICODE_LETTER_NUMBER \
- || (Type) == G_UNICODE_OTHER_NUMBER)
+#define IS(Type, Class) (((guint)1 << (Type)) & (Class))
+#define OR(Type, Rest) (((guint)1 << (Type)) | (Rest))
-#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)
-#define ISMARK(Type) ((Type) == G_UNICODE_NON_SPACING_MARK || \
- (Type) == G_UNICODE_COMBINING_MARK || \
- (Type) == G_UNICODE_ENCLOSING_MARK)
-
+
+#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))))
+
+#define ISZEROWIDTHTYPE(Type) IS ((Type), \
+ OR (G_UNICODE_NON_SPACING_MARK, \
+ OR (G_UNICODE_ENCLOSING_MARK, \
+ OR (G_UNICODE_FORMAT, 0))))
/**
* g_unichar_isalnum:
gboolean
g_unichar_isalnum (gunichar c)
{
- int t = TYPE (c);
- return ISDIGIT (t) || ISALPHA (t);
+ return ISALDIGIT (TYPE (c)) ? TRUE : FALSE;
}
/**
gboolean
g_unichar_isalpha (gunichar c)
{
- int t = TYPE (c);
- return ISALPHA (t);
+ return ISALPHA (TYPE (c)) ? TRUE : FALSE;
}
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);
+ 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)))))));
}
/**
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);
+ 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))))));
}
/**
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 || t == G_UNICODE_CURRENCY_SYMBOL
- || t == G_UNICODE_MODIFIER_SYMBOL || t == G_UNICODE_MATH_SYMBOL
- || t == G_UNICODE_OTHER_SYMBOL);
+ 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;
}
/**
* Pango or equivalent to get word breaking right, the algorithm
* is fairly complex.)
*
- * Return value: %TRUE if @c is a punctuation character
+ * Return value: %TRUE if @c is a space character
**/
gboolean
g_unichar_isspace (gunichar c)
default:
{
- int t = TYPE (c);
- return (t == G_UNICODE_SPACE_SEPARATOR || t == G_UNICODE_LINE_SEPARATOR
- || t == G_UNICODE_PARAGRAPH_SEPARATOR);
+ return IS (TYPE(c),
+ OR (G_UNICODE_SPACE_SEPARATOR,
+ OR (G_UNICODE_LINE_SEPARATOR,
+ OR (G_UNICODE_PARAGRAPH_SEPARATOR,
+ 0)))) ? TRUE : FALSE;
}
break;
}
unsigned int i;
for (i = 0; i < G_N_ELEMENTS (title_table); ++i)
if (title_table[i][0] == c)
- return 1;
- return 0;
+ return TRUE;
+ return FALSE;
}
/**
gboolean
g_unichar_isxdigit (gunichar c)
{
- int t = TYPE (c);
return ((c >= 'a' && c <= 'f')
|| (c >= 'A' && c <= 'F')
- || ISDIGIT (t));
+ || (TYPE (c) == G_UNICODE_DECIMAL_NUMBER));
}
/**
gboolean
g_unichar_isdefined (gunichar c)
{
- int t = TYPE (c);
- return t != G_UNICODE_UNASSIGNED;
+ return TYPE (c) != G_UNICODE_UNASSIGNED;
+}
+
+/**
+ * g_unichar_iszerowidth:
+ * @c: a Unicode character
+ *
+ * Determines if a given character typically takes zero width when rendered.
+ * The return value is %TRUE for all non-spacing and enclosing marks
+ * (e.g., combining accents), format characters, zero-width
+ * space, but not U+00AD SOFT HYPHEN.
+ *
+ * A typical use of this function is with one of g_unichar_iswide() or
+ * g_unichar_iswide_cjk() to determine the number of cells a string occupies
+ * when displayed on a grid display (terminals). However, note that not all
+ * terminals support zero-width rendering of zero-width marks.
+ *
+ * Return value: %TRUE if the character has zero width
+ *
+ * Since: 2.14
+ **/
+gboolean
+g_unichar_iszerowidth (gunichar c)
+{
+ if (G_UNLIKELY (c == 0x00AD))
+ return FALSE;
+
+ if (G_UNLIKELY (ISZEROWIDTHTYPE (TYPE (c))))
+ return TRUE;
+
+ if (G_UNLIKELY ((c >= 0x1160 && c < 0x1200) ||
+ c == 0x200B))
+ return TRUE;
+
+ return FALSE;
}
/**
|| (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 = (struct 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
gunichar val = ATTTABLE (c >> 8, c & 0xff);
if (val >= 0x1000000)
{
- const guchar *p = special_case_table + val - 0x1000000;
+ const gchar *p = special_case_table + val - 0x1000000;
return g_utf8_get_char (p);
}
else
- return val ? val : c;
+ {
+ /* Some lowercase letters, e.g., U+000AA, FEMININE ORDINAL INDICATOR,
+ * do not have an uppercase equivalent, in which case val will be
+ * zero. */
+ return val ? val : c;
+ }
}
else if (t == G_UNICODE_TITLECASE_LETTER)
{
gunichar val = ATTTABLE (c >> 8, c & 0xff);
if (val >= 0x1000000)
{
- const guchar *p = special_case_table + val - 0x1000000;
+ const gchar *p = special_case_table + val - 0x1000000;
return g_utf8_get_char (p);
}
else
- return val ? val : c;
+ {
+ /* Not all uppercase letters are guaranteed to have a lowercase
+ * equivalent. If this is the case, val will be zero. */
+ return val ? val : c;
+ }
}
else if (t == G_UNICODE_TITLECASE_LETTER)
{
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])
{
return LOCALE_NORMAL;
}
-static int
+static gint
output_marks (const char **p_inout,
char *out_buffer,
- int len,
gboolean remove_dot)
{
const char *p = *p_inout;
+ gint len = 0;
while (*p)
{
gunichar c = g_utf8_get_char (p);
- int t = TYPE(c);
- if (ISMARK(t))
+ if (ISMARK (TYPE (c)))
{
if (!remove_dot || c != 0x307 /* COMBINING DOT ABOVE */)
len += g_unichar_to_utf8 (c, out_buffer ? out_buffer + len : NULL);
return len;
}
-static gsize
+static gint
output_special_case (gchar *out_buffer,
- gsize len,
int offset,
int type,
int which)
{
- const guchar *p = special_case_table + offset;
+ const gchar *p = special_case_table + offset;
+ gint len;
if (type != G_UNICODE_TITLECASE_LETTER)
p = g_utf8_next_char (p);
}
g_free (decomp);
- len = output_marks (&p, out_buffer, len, TRUE);
+ len += output_marks (&p, out_buffer ? out_buffer + len : NULL, TRUE);
continue;
}
- if (!ISMARK(t))
+ if (!ISMARK (t))
last_was_i = FALSE;
}
}
/* Nasty, need to move it after other combining marks .. this would go away if
* we normalized first.
*/
- len = output_marks (&p, out_buffer, len, FALSE);
+ 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 (t == G_UNICODE_LOWERCASE_LETTER || t == G_UNICODE_TITLECASE_LETTER)
+ 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, len, val - 0x1000000, t,
+ len += output_special_case (out_buffer ? out_buffer + len : NULL, val - 0x1000000, t,
t == G_UNICODE_LOWERCASE_LETTER ? 0 : 1);
}
else
for (i = 0; i < G_N_ELEMENTS (title_table); ++i)
{
if (title_table[i][0] == c)
- val = title_table[i][1];
+ {
+ val = title_table[i][1];
+ break;
+ }
}
}
- len += g_unichar_to_utf8 (val, out_buffer ? out_buffer + len : NULL);
+ /* Some lowercase letters, e.g., U+000AA, FEMININE ORDINAL INDICATOR,
+ * do not have an uppercase equivalent, in which case val will be
+ * zero. */
+ len += g_unichar_to_utf8 (val ? val : c, out_buffer ? out_buffer + len : NULL);
}
}
else
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,
if (locale_type == LOCALE_TURKIC && c == 'I')
{
- /* I => LATIN SMALL LETTER DOTLESS I */
- len += g_unichar_to_utf8 (0x131, out_buffer ? out_buffer + len : NULL);
- }
+ 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)
* 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 */
+ if (ISALPHA (next_type)) /* Lu,Ll,Lt,Lm,Lo */
val = 0x3c3; /* GREEK SMALL SIGMA */
else
val = 0x3c2; /* GREEK SMALL FINAL SIGMA */
len += g_unichar_to_utf8 (val, out_buffer ? out_buffer + len : NULL);
}
- else if (t == G_UNICODE_UPPERCASE_LETTER || t == G_UNICODE_TITLECASE_LETTER)
+ 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, len, val - 0x1000000, t, 0);
+ len += output_special_case (out_buffer ? out_buffer + len : NULL, val - 0x1000000, t, 0);
}
else
{
for (i = 0; i < G_N_ELEMENTS (title_table); ++i)
{
if (title_table[i][0] == c)
- val = title_table[i][2];
+ {
+ val = title_table[i][2];
+ break;
+ }
}
}
- len += g_unichar_to_utf8 (val, out_buffer ? out_buffer + len : NULL);
+ /* Not all uppercase letters are guaranteed to have a lowercase
+ * equivalent. If this is the case, val will be zero. */
+ len += g_unichar_to_utf8 (val ? val : c, out_buffer ? out_buffer + len : NULL);
}
}
else
g_utf8_casefold (const gchar *str,
gssize len)
{
- GString *result = g_string_new (NULL);
+ 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)
{
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_SCRIPT_TABLE_MIDPOINT (G_N_ELEMENTS (g_script_table) / 2)
+
+static inline GUnicodeScript
+g_unichar_get_script_bsearch (gunichar ch)
+{
+ int lower = 0;
+ int upper = G_N_ELEMENTS (g_script_table) - 1;
+ static int saved_mid = G_SCRIPT_TABLE_MIDPOINT;
+ int mid = saved_mid;
+
+
+ do
+ {
+ if (ch < g_script_table[mid].start)
+ upper = mid - 1;
+ else if (ch >= g_script_table[mid].start + g_script_table[mid].chars)
+ lower = mid + 1;
+ else
+ return g_script_table[saved_mid = mid].script;
+
+ mid = (lower + upper) / 2;
+ }
+ while (lower <= upper);
+
+ return G_UNICODE_SCRIPT_UNKNOWN;
+}
+
+/**
+ * g_unichar_get_script:
+ * @ch: a Unicode character
+ *
+ * Looks up the #GUnicodeScript for a particular character (as defined
+ * by Unicode Standard Annex #24). No check is made for @ch being a
+ * valid Unicode character; if you pass in invalid character, the
+ * result is undefined.
+ *
+ * Return value: the #GUnicodeScript for the character.
+ *
+ * Since: 2.14
+ */
+GUnicodeScript
+g_unichar_get_script (gunichar ch)
+{
+ if (ch < G_EASY_SCRIPTS_RANGE)
+ return g_script_easy_table[ch];
+ else
+ return g_unichar_get_script_bsearch (ch);
+}
+
+
+#define __G_UNIPROP_C__
+#include "galiasdef.c"