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-rw-r--r--libbb/Kbuild2
-rw-r--r--libbb/lineedit.c26
-rw-r--r--libbb/printable_string.c2
-rw-r--r--libbb/progress.c2
-rw-r--r--libbb/unicode.c434
-rw-r--r--libbb/unicode_wcwidth.c543
6 files changed, 443 insertions, 566 deletions
diff --git a/libbb/Kbuild b/libbb/Kbuild
index 49cf4b8..4606d5a 100644
--- a/libbb/Kbuild
+++ b/libbb/Kbuild
@@ -124,7 +124,7 @@ lib-y += xrealloc_vector.o
# and objects which may fail to build (SELinux on selinux-less system)
lib-$(CONFIG_SELINUX) += selinux_common.o
lib-$(CONFIG_FEATURE_MTAB_SUPPORT) += mtab.o
-lib-$(CONFIG_FEATURE_ASSUME_UNICODE) += unicode.o
+lib-$(CONFIG_UNICODE_SUPPORT) += unicode.o
lib-$(CONFIG_FEATURE_CHECK_NAMES) += die_if_bad_username.o
lib-$(CONFIG_LOSETUP) += loop.o
diff --git a/libbb/lineedit.c b/libbb/lineedit.c
index 38a09cb..dc90846 100644
--- a/libbb/lineedit.c
+++ b/libbb/lineedit.c
@@ -67,7 +67,7 @@
#undef CHAR_T
-#if ENABLE_FEATURE_ASSUME_UNICODE
+#if ENABLE_UNICODE_SUPPORT
# define BB_NUL L'\0'
# define CHAR_T wchar_t
static bool BB_isspace(CHAR_T c) { return ((unsigned)c < 256 && isspace(c)); }
@@ -202,7 +202,7 @@ static void deinit_S(void)
#define DEINIT_S() deinit_S()
-#if ENABLE_FEATURE_ASSUME_UNICODE
+#if ENABLE_UNICODE_SUPPORT
static size_t load_string(const char *src, int maxsize)
{
ssize_t len = mbstowcs(command_ps, src, maxsize - 1);
@@ -932,7 +932,7 @@ static void input_tab(smallint *lastWasTab)
#define matchBuf (S.input_tab__matchBuf)
int find_type;
int recalc_pos;
-#if ENABLE_FEATURE_ASSUME_UNICODE
+#if ENABLE_UNICODE_SUPPORT
/* cursor pos in command converted to multibyte form */
int cursor_mb;
#endif
@@ -942,7 +942,7 @@ static void input_tab(smallint *lastWasTab)
/* Make a local copy of the string --
* up to the position of the cursor */
save_string(matchBuf, cursor + 1);
-#if ENABLE_FEATURE_ASSUME_UNICODE
+#if ENABLE_UNICODE_SUPPORT
cursor_mb = strlen(matchBuf);
#endif
tmp = matchBuf;
@@ -1015,7 +1015,7 @@ static void input_tab(smallint *lastWasTab)
}
len_found = strlen(tmp);
-#if !ENABLE_FEATURE_ASSUME_UNICODE
+#if !ENABLE_UNICODE_SUPPORT
/* have space to place the match? */
/* The result consists of three parts with these lengths: */
/* (cursor - recalc_pos) + len_found + (command_len - cursor) */
@@ -1088,7 +1088,7 @@ static void save_command_ps_at_cur_history(void)
int cur = state->cur_history;
free(state->history[cur]);
-# if ENABLE_FEATURE_ASSUME_UNICODE
+# if ENABLE_UNICODE_SUPPORT
{
char tbuf[MAX_LINELEN];
save_string(tbuf, sizeof(tbuf));
@@ -1659,7 +1659,7 @@ static int lineedit_read_key(char *read_key_buffer)
{
int64_t ic;
int timeout = -1;
-#if ENABLE_FEATURE_ASSUME_UNICODE
+#if ENABLE_UNICODE_SUPPORT
char unicode_buf[MB_CUR_MAX + 1];
int unicode_idx = 0;
#endif
@@ -1674,7 +1674,7 @@ static int lineedit_read_key(char *read_key_buffer)
*/
ic = read_key(STDIN_FILENO, read_key_buffer, timeout);
if (errno) {
-#if ENABLE_FEATURE_ASSUME_UNICODE
+#if ENABLE_UNICODE_SUPPORT
if (errno == EAGAIN && unicode_idx != 0)
goto pushback;
#endif
@@ -1700,7 +1700,7 @@ static int lineedit_read_key(char *read_key_buffer)
}
#endif
-#if ENABLE_FEATURE_ASSUME_UNICODE
+#if ENABLE_UNICODE_SUPPORT
if (unicode_status == UNICODE_ON) {
wchar_t wc;
@@ -1817,7 +1817,7 @@ int FAST_FUNC read_line_input(const char *prompt, char *command, int maxsize, li
/* prepare before init handlers */
cmdedit_y = 0; /* quasireal y, not true if line > xt*yt */
command_len = 0;
-#if ENABLE_FEATURE_ASSUME_UNICODE
+#if ENABLE_UNICODE_SUPPORT
command_ps = xzalloc(maxsize * sizeof(command_ps[0]));
#else
command_ps = command;
@@ -2199,8 +2199,8 @@ int FAST_FUNC read_line_input(const char *prompt, char *command, int maxsize, li
// }
// }
if (ic < ' '
- || (!ENABLE_FEATURE_ASSUME_UNICODE && ic >= 256)
- || (ENABLE_FEATURE_ASSUME_UNICODE && ic >= VI_CMDMODE_BIT)
+ || (!ENABLE_UNICODE_SUPPORT && ic >= 256)
+ || (ENABLE_UNICODE_SUPPORT && ic >= VI_CMDMODE_BIT)
) {
/* If VI_CMDMODE_BIT is set, ic is >= 256
* and vi mode ignores unexpected chars.
@@ -2268,7 +2268,7 @@ int FAST_FUNC read_line_input(const char *prompt, char *command, int maxsize, li
/* Stop bug catching using "command_must_not_be_used" trick */
#undef command
-#if ENABLE_FEATURE_ASSUME_UNICODE
+#if ENABLE_UNICODE_SUPPORT
command[0] = '\0';
if (command_len > 0)
command_len = save_string(command, maxsize - 1);
diff --git a/libbb/printable_string.c b/libbb/printable_string.c
index 47565de..83a4821 100644
--- a/libbb/printable_string.c
+++ b/libbb/printable_string.c
@@ -36,7 +36,7 @@ const char* FAST_FUNC printable_string(uni_stat_t *stats, const char *str)
s++;
}
-#if ENABLE_FEATURE_ASSUME_UNICODE
+#if ENABLE_UNICODE_SUPPORT
dst = unicode_conv_to_printable(stats, str);
#else
{
diff --git a/libbb/progress.c b/libbb/progress.c
index 0e484da..e960390 100644
--- a/libbb/progress.c
+++ b/libbb/progress.c
@@ -78,7 +78,7 @@ void FAST_FUNC bb_progress_update(bb_progress_t *p,
if (ratio > 100) ratio = 100;
}
-#if ENABLE_FEATURE_ASSUME_UNICODE
+#if ENABLE_UNICODE_SUPPORT
init_unicode();
/* libbb candidate? */
{
diff --git a/libbb/unicode.c b/libbb/unicode.c
index bc97145..83e70b4 100644
--- a/libbb/unicode.c
+++ b/libbb/unicode.c
@@ -14,12 +14,12 @@
uint8_t unicode_status;
#endif
-/* This file is compiled only if FEATURE_ASSUME_UNICODE is on.
+/* This file is compiled only if UNICODE_SUPPORT is on.
* We check other options and decide whether to use libc support
* via locale, or use our own logic:
*/
-#if ENABLE_LOCALE_SUPPORT
+#if ENABLE_UNICODE_USING_LOCALE
/* Unicode support using libc locale support. */
@@ -139,7 +139,7 @@ size_t FAST_FUNC wcstombs(char *dest, const wchar_t *src, size_t n)
return org_n - n;
}
-#define ERROR_WCHAR (~(wchar_t)0)
+# define ERROR_WCHAR (~(wchar_t)0)
static const char *mbstowc_internal(wchar_t *res, const char *src)
{
@@ -239,7 +239,427 @@ int FAST_FUNC iswpunct(wint_t wc)
return (unsigned)wc <= 0x7f && ispunct(wc);
}
-#include "unicode_wcwidth.c"
+
+# if LAST_SUPPORTED_WCHAR >= 0x300
+struct interval {
+ uint16_t first;
+ uint16_t last;
+};
+
+/* auxiliary function for binary search in interval table */
+static int in_interval_table(unsigned ucs, const struct interval *table, unsigned max)
+{
+ unsigned min;
+ unsigned mid;
+
+ if (ucs < table[0].first || ucs > table[max].last)
+ return 0;
+
+ min = 0;
+ while (max >= min) {
+ mid = (min + max) / 2;
+ if (ucs > table[mid].last)
+ min = mid + 1;
+ else if (ucs < table[mid].first)
+ max = mid - 1;
+ else
+ return 1;
+ }
+ return 0;
+}
+
+static int in_uint16_table(unsigned ucs, const uint16_t *table, unsigned max)
+{
+ unsigned min;
+ unsigned mid;
+ unsigned first, last;
+
+ first = table[0] >> 2;
+ last = first + (table[0] & 3);
+ if (ucs < first || ucs > last)
+ return 0;
+
+ min = 0;
+ while (max >= min) {
+ mid = (min + max) / 2;
+ first = table[mid] >> 2;
+ last = first + (table[mid] & 3);
+ if (ucs > last)
+ min = mid + 1;
+ else if (ucs < first)
+ max = mid - 1;
+ else
+ return 1;
+ }
+ return 0;
+}
+# endif
+
+
+/*
+ * This is an implementation of wcwidth() and wcswidth() (defined in
+ * IEEE Std 1002.1-2001) for Unicode.
+ *
+ * http://www.opengroup.org/onlinepubs/007904975/functions/wcwidth.html
+ * http://www.opengroup.org/onlinepubs/007904975/functions/wcswidth.html
+ *
+ * In fixed-width output devices, Latin characters all occupy a single
+ * "cell" position of equal width, whereas ideographic CJK characters
+ * occupy two such cells. Interoperability between terminal-line
+ * applications and (teletype-style) character terminals using the
+ * UTF-8 encoding requires agreement on which character should advance
+ * the cursor by how many cell positions. No established formal
+ * standards exist at present on which Unicode character shall occupy
+ * how many cell positions on character terminals. These routines are
+ * a first attempt of defining such behavior based on simple rules
+ * applied to data provided by the Unicode Consortium.
+ *
+ * For some graphical characters, the Unicode standard explicitly
+ * defines a character-cell width via the definition of the East Asian
+ * FullWidth (F), Wide (W), Half-width (H), and Narrow (Na) classes.
+ * In all these cases, there is no ambiguity about which width a
+ * terminal shall use. For characters in the East Asian Ambiguous (A)
+ * class, the width choice depends purely on a preference of backward
+ * compatibility with either historic CJK or Western practice.
+ * Choosing single-width for these characters is easy to justify as
+ * the appropriate long-term solution, as the CJK practice of
+ * displaying these characters as double-width comes from historic
+ * implementation simplicity (8-bit encoded characters were displayed
+ * single-width and 16-bit ones double-width, even for Greek,
+ * Cyrillic, etc.) and not any typographic considerations.
+ *
+ * Much less clear is the choice of width for the Not East Asian
+ * (Neutral) class. Existing practice does not dictate a width for any
+ * of these characters. It would nevertheless make sense
+ * typographically to allocate two character cells to characters such
+ * as for instance EM SPACE or VOLUME INTEGRAL, which cannot be
+ * represented adequately with a single-width glyph. The following
+ * routines at present merely assign a single-cell width to all
+ * neutral characters, in the interest of simplicity. This is not
+ * entirely satisfactory and should be reconsidered before
+ * establishing a formal standard in this area. At the moment, the
+ * decision which Not East Asian (Neutral) characters should be
+ * represented by double-width glyphs cannot yet be answered by
+ * applying a simple rule from the Unicode database content. Setting
+ * up a proper standard for the behavior of UTF-8 character terminals
+ * will require a careful analysis not only of each Unicode character,
+ * but also of each presentation form, something the author of these
+ * routines has avoided to do so far.
+ *
+ * http://www.unicode.org/unicode/reports/tr11/
+ *
+ * Markus Kuhn -- 2007-05-26 (Unicode 5.0)
+ *
+ * Permission to use, copy, modify, and distribute this software
+ * for any purpose and without fee is hereby granted. The author
+ * disclaims all warranties with regard to this software.
+ *
+ * Latest version: http://www.cl.cam.ac.uk/~mgk25/ucs/wcwidth.c
+ */
+
+/* Assigned Unicode character ranges:
+ * Plane Range
+ * 0 0000–FFFF Basic Multilingual Plane
+ * 1 10000–1FFFF Supplementary Multilingual Plane
+ * 2 20000–2FFFF Supplementary Ideographic Plane
+ * 3 30000-3FFFF Tertiary Ideographic Plane (no chars assigned yet)
+ * 4-13 40000–DFFFF currently unassigned
+ * 14 E0000–EFFFF Supplementary Special-purpose Plane
+ * 15 F0000–FFFFF Supplementary Private Use Area-A
+ * 16 100000–10FFFF Supplementary Private Use Area-B
+ *
+ * "Supplementary Special-purpose Plane currently contains non-graphical
+ * characters in two blocks of 128 and 240 characters. The first block
+ * is for language tag characters for use when language cannot be indicated
+ * through other protocols (such as the xml:lang attribute in XML).
+ * The other block contains glyph variation selectors to indicate
+ * an alternate glyph for a character that cannot be determined by context."
+ *
+ * In simpler terms: it is a tool to fix the "Han unification" mess
+ * created by Unicode committee, to select Chinese/Japanese/Korean/Taiwan
+ * version of a character. (They forgot that the whole purpose of the Unicode
+ * was to be able to write all chars in one charset without such tricks).
+ * Until East Asian users say it is actually necessary to support these
+ * code points in console applications like busybox
+ * (i.e. do these chars ever appear in filenames, hostnames, text files
+ * and such?), we are treating these code points as invalid.
+ *
+ * Tertiary Ideographic Plane is also ignored for now,
+ * until Unicode committee assigns something there.
+ */
+/* The following two functions define the column width of an ISO 10646
+ * character as follows:
+ *
+ * - The null character (U+0000) has a column width of 0.
+ *
+ * - Other C0/C1 control characters and DEL will lead to a return
+ * value of -1.
+ *
+ * - Non-spacing and enclosing combining characters (general
+ * category code Mn or Me in the Unicode database) have a
+ * column width of 0.
+ *
+ * - SOFT HYPHEN (U+00AD) has a column width of 1.
+ *
+ * - Other format characters (general category code Cf in the Unicode
+ * database) and ZERO WIDTH SPACE (U+200B) have a column width of 0.
+ *
+ * - Hangul Jamo medial vowels and final consonants (U+1160-U+11FF)
+ * have a column width of 0.
+ *
+ * - Spacing characters in the East Asian Wide (W) or East Asian
+ * Full-width (F) category as defined in Unicode Technical
+ * Report #11 have a column width of 2.
+ *
+ * - All remaining characters (including all printable
+ * ISO 8859-1 and WGL4 characters, Unicode control characters,
+ * etc.) have a column width of 1.
+ *
+ * This implementation assumes that wchar_t characters are encoded
+ * in ISO 10646.
+ */
+static int wcwidth(unsigned ucs)
+{
+# if LAST_SUPPORTED_WCHAR >= 0x300
+ /* sorted list of non-overlapping intervals of non-spacing characters */
+ /* generated by "uniset +cat=Me +cat=Mn +cat=Cf -00AD +1160-11FF +200B c" */
+ static const struct interval combining[] = {
+# define BIG_(a,b) { a, b },
+# define PAIR(a,b)
+# define ARRAY /* PAIR if < 0x4000 and no more than 4 chars big */ \
+ BIG_(0x0300, 0x036F) \
+ PAIR(0x0483, 0x0486) \
+ PAIR(0x0488, 0x0489) \
+ BIG_(0x0591, 0x05BD) \
+ PAIR(0x05BF, 0x05BF) \
+ PAIR(0x05C1, 0x05C2) \
+ PAIR(0x05C4, 0x05C5) \
+ PAIR(0x05C7, 0x05C7) \
+ PAIR(0x0600, 0x0603) \
+ BIG_(0x0610, 0x0615) \
+ BIG_(0x064B, 0x065E) \
+ PAIR(0x0670, 0x0670) \
+ BIG_(0x06D6, 0x06E4) \
+ PAIR(0x06E7, 0x06E8) \
+ PAIR(0x06EA, 0x06ED) \
+ PAIR(0x070F, 0x070F) \
+ PAIR(0x0711, 0x0711) \
+ BIG_(0x0730, 0x074A) \
+ BIG_(0x07A6, 0x07B0) \
+ BIG_(0x07EB, 0x07F3) \
+ PAIR(0x0901, 0x0902) \
+ PAIR(0x093C, 0x093C) \
+ BIG_(0x0941, 0x0948) \
+ PAIR(0x094D, 0x094D) \
+ PAIR(0x0951, 0x0954) \
+ PAIR(0x0962, 0x0963) \
+ PAIR(0x0981, 0x0981) \
+ PAIR(0x09BC, 0x09BC) \
+ PAIR(0x09C1, 0x09C4) \
+ PAIR(0x09CD, 0x09CD) \
+ PAIR(0x09E2, 0x09E3) \
+ PAIR(0x0A01, 0x0A02) \
+ PAIR(0x0A3C, 0x0A3C) \
+ PAIR(0x0A41, 0x0A42) \
+ PAIR(0x0A47, 0x0A48) \
+ PAIR(0x0A4B, 0x0A4D) \
+ PAIR(0x0A70, 0x0A71) \
+ PAIR(0x0A81, 0x0A82) \
+ PAIR(0x0ABC, 0x0ABC) \
+ BIG_(0x0AC1, 0x0AC5) \
+ PAIR(0x0AC7, 0x0AC8) \
+ PAIR(0x0ACD, 0x0ACD) \
+ PAIR(0x0AE2, 0x0AE3) \
+ PAIR(0x0B01, 0x0B01) \
+ PAIR(0x0B3C, 0x0B3C) \
+ PAIR(0x0B3F, 0x0B3F) \
+ PAIR(0x0B41, 0x0B43) \
+ PAIR(0x0B4D, 0x0B4D) \
+ PAIR(0x0B56, 0x0B56) \
+ PAIR(0x0B82, 0x0B82) \
+ PAIR(0x0BC0, 0x0BC0) \
+ PAIR(0x0BCD, 0x0BCD) \
+ PAIR(0x0C3E, 0x0C40) \
+ PAIR(0x0C46, 0x0C48) \
+ PAIR(0x0C4A, 0x0C4D) \
+ PAIR(0x0C55, 0x0C56) \
+ PAIR(0x0CBC, 0x0CBC) \
+ PAIR(0x0CBF, 0x0CBF) \
+ PAIR(0x0CC6, 0x0CC6) \
+ PAIR(0x0CCC, 0x0CCD) \
+ PAIR(0x0CE2, 0x0CE3) \
+ PAIR(0x0D41, 0x0D43) \
+ PAIR(0x0D4D, 0x0D4D) \
+ PAIR(0x0DCA, 0x0DCA) \
+ PAIR(0x0DD2, 0x0DD4) \
+ PAIR(0x0DD6, 0x0DD6) \
+ PAIR(0x0E31, 0x0E31) \
+ BIG_(0x0E34, 0x0E3A) \
+ BIG_(0x0E47, 0x0E4E) \
+ PAIR(0x0EB1, 0x0EB1) \
+ BIG_(0x0EB4, 0x0EB9) \
+ PAIR(0x0EBB, 0x0EBC) \
+ BIG_(0x0EC8, 0x0ECD) \
+ PAIR(0x0F18, 0x0F19) \
+ PAIR(0x0F35, 0x0F35) \
+ PAIR(0x0F37, 0x0F37) \
+ PAIR(0x0F39, 0x0F39) \
+ BIG_(0x0F71, 0x0F7E) \
+ BIG_(0x0F80, 0x0F84) \
+ PAIR(0x0F86, 0x0F87) \
+ PAIR(0x0FC6, 0x0FC6) \
+ BIG_(0x0F90, 0x0F97) \
+ BIG_(0x0F99, 0x0FBC) \
+ PAIR(0x102D, 0x1030) \
+ PAIR(0x1032, 0x1032) \
+ PAIR(0x1036, 0x1037) \
+ PAIR(0x1039, 0x1039) \
+ PAIR(0x1058, 0x1059) \
+ BIG_(0x1160, 0x11FF) \
+ PAIR(0x135F, 0x135F) \
+ PAIR(0x1712, 0x1714) \
+ PAIR(0x1732, 0x1734) \
+ PAIR(0x1752, 0x1753) \
+ PAIR(0x1772, 0x1773) \
+ PAIR(0x17B4, 0x17B5) \
+ BIG_(0x17B7, 0x17BD) \
+ PAIR(0x17C6, 0x17C6) \
+ BIG_(0x17C9, 0x17D3) \
+ PAIR(0x17DD, 0x17DD) \
+ PAIR(0x180B, 0x180D) \
+ PAIR(0x18A9, 0x18A9) \
+ PAIR(0x1920, 0x1922) \
+ PAIR(0x1927, 0x1928) \
+ PAIR(0x1932, 0x1932) \
+ PAIR(0x1939, 0x193B) \
+ PAIR(0x1A17, 0x1A18) \
+ PAIR(0x1B00, 0x1B03) \
+ PAIR(0x1B34, 0x1B34) \
+ BIG_(0x1B36, 0x1B3A) \
+ PAIR(0x1B3C, 0x1B3C) \
+ PAIR(0x1B42, 0x1B42) \
+ BIG_(0x1B6B, 0x1B73) \
+ BIG_(0x1DC0, 0x1DCA) \
+ PAIR(0x1DFE, 0x1DFF) \
+ BIG_(0x200B, 0x200F) \
+ BIG_(0x202A, 0x202E) \
+ PAIR(0x2060, 0x2063) \
+ BIG_(0x206A, 0x206F) \
+ BIG_(0x20D0, 0x20EF) \
+ BIG_(0x302A, 0x302F) \
+ PAIR(0x3099, 0x309A) \
+ /* Too big to be packed in PAIRs: */ \
+ BIG_(0xA806, 0xA806) \
+ BIG_(0xA80B, 0xA80B) \
+ BIG_(0xA825, 0xA826) \
+ BIG_(0xFB1E, 0xFB1E) \
+ BIG_(0xFE00, 0xFE0F) \
+ BIG_(0xFE20, 0xFE23) \
+ BIG_(0xFEFF, 0xFEFF) \
+ BIG_(0xFFF9, 0xFFFB)
+ ARRAY
+# undef BIG_
+# undef PAIR
+ };
+# define BIG_(a,b)
+# define PAIR(a,b) (a << 2) | (b-a),
+ static const uint16_t combining1[] = { ARRAY };
+# undef BIG_
+# undef PAIR
+# define BIG_(a,b) char big_##a[b < 0x4000 && b-a <= 3 ? -1 : 1];
+# define PAIR(a,b) char pair##a[b >= 0x4000 || b-a > 3 ? -1 : 1];
+ struct CHECK { ARRAY };
+# undef BIG_
+# undef PAIR
+# undef ARRAY
+# endif
+
+ if (ucs == 0)
+ return 0;
+
+ /* Test for 8-bit control characters (00-1f, 80-9f, 7f) */
+ if ((ucs & ~0x80) < 0x20 || ucs == 0x7f)
+ return -1;
+ /* Quick abort if it is an obviously invalid char */
+ if (ucs > LAST_SUPPORTED_WCHAR)
+ return -1;
+
+ /* Optimization: no combining chars below 0x300 */
+ if (LAST_SUPPORTED_WCHAR < 0x300 || ucs < 0x300)
+ return 1;
+
+# if LAST_SUPPORTED_WCHAR >= 0x300
+ /* Binary search in table of non-spacing characters */
+ if (in_interval_table(ucs, combining, ARRAY_SIZE(combining) - 1))
+ return 0;
+ if (in_uint16_table(ucs, combining1, ARRAY_SIZE(combining1) - 1))
+ return 0;
+
+ /* Optimization: all chars below 0x1100 are not double-width */
+ if (LAST_SUPPORTED_WCHAR < 0x1100 || ucs < 0x1100)
+ return 1;
+
+# if LAST_SUPPORTED_WCHAR >= 0x1100
+ /* Invalid code points: */
+ /* High (d800..dbff) and low (dc00..dfff) surrogates (valid only in UTF16) */
+ /* Private Use Area (e000..f8ff) */
+ /* Noncharacters fdd0..fdef */
+ if ((LAST_SUPPORTED_WCHAR >= 0xd800 && ucs >= 0xd800 && ucs <= 0xf8ff)
+ || (LAST_SUPPORTED_WCHAR >= 0xfdd0 && ucs >= 0xfdd0 && ucs <= 0xfdef)
+ ) {
+ return -1;
+ }
+ /* 0xfffe and 0xffff in every plane are invalid */
+ if (LAST_SUPPORTED_WCHAR >= 0xfffe && ((ucs & 0xfffe) == 0xfffe)) {
+ return -1;
+ }
+
+# if LAST_SUPPORTED_WCHAR >= 0x10000
+ if (ucs >= 0x10000) {
+ /* Combining chars in Supplementary Multilingual Plane 0x1xxxx */
+ static const struct interval combining0x10000[] = {
+ { 0x0A01, 0x0A03 }, { 0x0A05, 0x0A06 }, { 0x0A0C, 0x0A0F },
+ { 0x0A38, 0x0A3A }, { 0x0A3F, 0x0A3F }, { 0xD167, 0xD169 },
+ { 0xD173, 0xD182 }, { 0xD185, 0xD18B }, { 0xD1AA, 0xD1AD },
+ { 0xD242, 0xD244 }
+ };
+ /* Binary search in table of non-spacing characters in Supplementary Multilingual Plane */
+ if (in_interval_table(ucs ^ 0x10000, combining0x10000, ARRAY_SIZE(combining0x10000) - 1))
+ return 0;
+ /* Check a few non-spacing chars in Supplementary Special-purpose Plane 0xExxxx */
+ if (LAST_SUPPORTED_WCHAR >= 0xE0001
+ && ( ucs == 0xE0001
+ || (ucs >= 0xE0020 && ucs <= 0xE007F)
+ || (ucs >= 0xE0100 && ucs <= 0xE01EF)
+ )
+ ) {
+ return 0;
+ }
+ }
+# endif
+
+ /* If we arrive here, ucs is not a combining or C0/C1 control character.
+ * Check whether it's 1 char or 2-shar wide.
+ */
+ return 1 +
+ ( (/*ucs >= 0x1100 &&*/ ucs <= 0x115f) /* Hangul Jamo init. consonants */
+ || ucs == 0x2329 /* left-pointing angle bracket; also CJK punct. char */
+ || ucs == 0x232a /* right-pointing angle bracket; also CJK punct. char */
+ || (ucs >= 0x2e80 && ucs <= 0xa4cf && ucs != 0x303f) /* CJK ... Yi */
+# if LAST_SUPPORTED_WCHAR >= 0xac00
+ || (ucs >= 0xac00 && ucs <= 0xd7a3) /* Hangul Syllables */
+ || (ucs >= 0xf900 && ucs <= 0xfaff) /* CJK Compatibility Ideographs */
+ || (ucs >= 0xfe10 && ucs <= 0xfe19) /* Vertical forms */
+ || (ucs >= 0xfe30 && ucs <= 0xfe6f) /* CJK Compatibility Forms */
+ || (ucs >= 0xff00 && ucs <= 0xff60) /* Fullwidth Forms */
+ || (ucs >= 0xffe0 && ucs <= 0xffe6)
+ || ((ucs >> 17) == (2 >> 1)) /* 20000..3ffff: Supplementary and Tertiary Ideographic Planes */
+# endif
+ );
+# endif /* >= 0x1100 */
+# endif /* >= 0x300 */
+}
+
# if ENABLE_UNICODE_BIDI_SUPPORT
int FAST_FUNC unicode_bidi_isrtl(wint_t wc)
@@ -592,7 +1012,7 @@ static char* FAST_FUNC unicode_conv_to_printable2(uni_stat_t *stats, const char
int w;
wchar_t wc;
-#if ENABLE_LOCALE_SUPPORT
+#if ENABLE_UNICODE_USING_LOCALE
{
mbstate_t mbst = { 0 };
ssize_t rc = mbsrtowcs(&wc, &src, 1, &mbst);
@@ -647,7 +1067,7 @@ static char* FAST_FUNC unicode_conv_to_printable2(uni_stat_t *stats, const char
uni_count++;
uni_width += w;
dst = xrealloc(dst, dst_len + MB_CUR_MAX);
-#if ENABLE_LOCALE_SUPPORT
+#if ENABLE_UNICODE_USING_LOCALE
{
mbstate_t mbst = { 0 };
dst_len += wcrtomb(&dst[dst_len], wc, &mbst);
@@ -699,7 +1119,7 @@ unsigned FAST_FUNC unicode_padding_to_width(unsigned width, const char *src)
int w;
wchar_t wc;
-#if ENABLE_LOCALE_SUPPORT
+#if ENABLE_UNICODE_USING_LOCALE
{
mbstate_t mbst = { 0 };
ssize_t rc = mbsrtowcs(&wc, &src, 1, &mbst);
diff --git a/libbb/unicode_wcwidth.c b/libbb/unicode_wcwidth.c
deleted file mode 100644
index 0bb6227..0000000
--- a/libbb/unicode_wcwidth.c
+++ /dev/null
@@ -1,543 +0,0 @@
-/*
- * This is an implementation of wcwidth() and wcswidth() (defined in
- * IEEE Std 1002.1-2001) for Unicode.
- *
- * http://www.opengroup.org/onlinepubs/007904975/functions/wcwidth.html
- * http://www.opengroup.org/onlinepubs/007904975/functions/wcswidth.html
- *
- * In fixed-width output devices, Latin characters all occupy a single
- * "cell" position of equal width, whereas ideographic CJK characters
- * occupy two such cells. Interoperability between terminal-line
- * applications and (teletype-style) character terminals using the
- * UTF-8 encoding requires agreement on which character should advance
- * the cursor by how many cell positions. No established formal
- * standards exist at present on which Unicode character shall occupy
- * how many cell positions on character terminals. These routines are
- * a first attempt of defining such behavior based on simple rules
- * applied to data provided by the Unicode Consortium.
- *
- * For some graphical characters, the Unicode standard explicitly
- * defines a character-cell width via the definition of the East Asian
- * FullWidth (F), Wide (W), Half-width (H), and Narrow (Na) classes.
- * In all these cases, there is no ambiguity about which width a
- * terminal shall use. For characters in the East Asian Ambiguous (A)
- * class, the width choice depends purely on a preference of backward
- * compatibility with either historic CJK or Western practice.
- * Choosing single-width for these characters is easy to justify as
- * the appropriate long-term solution, as the CJK practice of
- * displaying these characters as double-width comes from historic
- * implementation simplicity (8-bit encoded characters were displayed
- * single-width and 16-bit ones double-width, even for Greek,
- * Cyrillic, etc.) and not any typographic considerations.
- *
- * Much less clear is the choice of width for the Not East Asian
- * (Neutral) class. Existing practice does not dictate a width for any
- * of these characters. It would nevertheless make sense
- * typographically to allocate two character cells to characters such
- * as for instance EM SPACE or VOLUME INTEGRAL, which cannot be
- * represented adequately with a single-width glyph. The following
- * routines at present merely assign a single-cell width to all
- * neutral characters, in the interest of simplicity. This is not
- * entirely satisfactory and should be reconsidered before
- * establishing a formal standard in this area. At the moment, the
- * decision which Not East Asian (Neutral) characters should be
- * represented by double-width glyphs cannot yet be answered by
- * applying a simple rule from the Unicode database content. Setting
- * up a proper standard for the behavior of UTF-8 character terminals
- * will require a careful analysis not only of each Unicode character,
- * but also of each presentation form, something the author of these
- * routines has avoided to do so far.
- *
- * http://www.unicode.org/unicode/reports/tr11/
- *
- * Markus Kuhn -- 2007-05-26 (Unicode 5.0)
- *
- * Permission to use, copy, modify, and distribute this software
- * for any purpose and without fee is hereby granted. The author
- * disclaims all warranties with regard to this software.
- *
- * Latest version: http://www.cl.cam.ac.uk/~mgk25/ucs/wcwidth.c
- */
-
-/* Assigned Unicode character ranges:
- * Plane Range
- * 0 0000–FFFF Basic Multilingual Plane
- * 1 10000–1FFFF Supplementary Multilingual Plane
- * 2 20000–2FFFF Supplementary Ideographic Plane
- * 3 30000-3FFFF Tertiary Ideographic Plane (no chars assigned yet)
- * 4-13 40000–DFFFF currently unassigned
- * 14 E0000–EFFFF Supplementary Special-purpose Plane
- * 15 F0000–FFFFF Supplementary Private Use Area-A
- * 16 100000–10FFFF Supplementary Private Use Area-B
- *
- * "Supplementary Special-purpose Plane currently contains non-graphical
- * characters in two blocks of 128 and 240 characters. The first block
- * is for language tag characters for use when language cannot be indicated
- * through other protocols (such as the xml:lang attribute in XML).
- * The other block contains glyph variation selectors to indicate
- * an alternate glyph for a character that cannot be determined by context."
- *
- * In simpler terms: it is a tool to fix the "Han unification" mess
- * created by Unicode committee, to select Chinese/Japanese/Korean/Taiwan
- * version of a character. (They forgot that the whole purpose of the Unicode
- * was to be able to write all chars in one charset without such tricks).
- * Until East Asian users say it is actually necessary to support these
- * code points in console applications like busybox
- * (i.e. do these chars ever appear in filenames, hostnames, text files
- * and such?), we are treating these code points as invalid.
- *
- * Tertiary Ideographic Plane is also ignored for now,
- * until Unicode committee assigns something there.
- */
-
-#if LAST_SUPPORTED_WCHAR >= 0x300
-struct interval {
- uint16_t first;
- uint16_t last;
-};
-
-/* auxiliary function for binary search in interval table */
-static int in_interval_table(unsigned ucs, const struct interval *table, unsigned max)
-{
- unsigned min;
- unsigned mid;
-
- if (ucs < table[0].first || ucs > table[max].last)
- return 0;
-
- min = 0;
- while (max >= min) {
- mid = (min + max) / 2;
- if (ucs > table[mid].last)
- min = mid + 1;
- else if (ucs < table[mid].first)
- max = mid - 1;
- else
- return 1;
- }
- return 0;
-}
-
-static int in_uint16_table(unsigned ucs, const uint16_t *table, unsigned max)
-{
- unsigned min;
- unsigned mid;
- unsigned first, last;
-
- first = table[0] >> 2;
- last = first + (table[0] & 3);
- if (ucs < first || ucs > last)
- return 0;
-
- min = 0;
- while (max >= min) {
- mid = (min + max) / 2;
- first = table[mid] >> 2;
- last = first + (table[mid] & 3);
- if (ucs > last)
- min = mid + 1;
- else if (ucs < first)
- max = mid - 1;
- else
- return 1;
- }
- return 0;
-}
-#endif
-
-
-/* The following two functions define the column width of an ISO 10646
- * character as follows:
- *
- * - The null character (U+0000) has a column width of 0.
- *
- * - Other C0/C1 control characters and DEL will lead to a return
- * value of -1.
- *
- * - Non-spacing and enclosing combining characters (general
- * category code Mn or Me in the Unicode database) have a
- * column width of 0.
- *
- * - SOFT HYPHEN (U+00AD) has a column width of 1.
- *
- * - Other format characters (general category code Cf in the Unicode
- * database) and ZERO WIDTH SPACE (U+200B) have a column width of 0.
- *
- * - Hangul Jamo medial vowels and final consonants (U+1160-U+11FF)
- * have a column width of 0.
- *
- * - Spacing characters in the East Asian Wide (W) or East Asian
- * Full-width (F) category as defined in Unicode Technical
- * Report #11 have a column width of 2.
- *
- * - All remaining characters (including all printable
- * ISO 8859-1 and WGL4 characters, Unicode control characters,
- * etc.) have a column width of 1.
- *
- * This implementation assumes that wchar_t characters are encoded
- * in ISO 10646.
- */
-static int wcwidth(unsigned ucs)
-{
-#if LAST_SUPPORTED_WCHAR >= 0x300
- /* sorted list of non-overlapping intervals of non-spacing characters */
- /* generated by "uniset +cat=Me +cat=Mn +cat=Cf -00AD +1160-11FF +200B c" */
- static const struct interval combining[] = {
-#define BIG_(a,b) { a, b },
-#define PAIR(a,b)
- /* PAIR if < 0x4000 and no more than 4 chars big */
- BIG_(0x0300, 0x036F)
- PAIR(0x0483, 0x0486)
- PAIR(0x0488, 0x0489)
- BIG_(0x0591, 0x05BD)
- PAIR(0x05BF, 0x05BF)
- PAIR(0x05C1, 0x05C2)
- PAIR(0x05C4, 0x05C5)
- PAIR(0x05C7, 0x05C7)
- PAIR(0x0600, 0x0603)
- BIG_(0x0610, 0x0615)
- BIG_(0x064B, 0x065E)
- PAIR(0x0670, 0x0670)
- BIG_(0x06D6, 0x06E4)
- PAIR(0x06E7, 0x06E8)
- PAIR(0x06EA, 0x06ED)
- PAIR(0x070F, 0x070F)
- PAIR(0x0711, 0x0711)
- BIG_(0x0730, 0x074A)
- BIG_(0x07A6, 0x07B0)
- BIG_(0x07EB, 0x07F3)
- PAIR(0x0901, 0x0902)
- PAIR(0x093C, 0x093C)
- BIG_(0x0941, 0x0948)
- PAIR(0x094D, 0x094D)
- PAIR(0x0951, 0x0954)
- PAIR(0x0962, 0x0963)
- PAIR(0x0981, 0x0981)
- PAIR(0x09BC, 0x09BC)
- PAIR(0x09C1, 0x09C4)
- PAIR(0x09CD, 0x09CD)
- PAIR(0x09E2, 0x09E3)
- PAIR(0x0A01, 0x0A02)
- PAIR(0x0A3C, 0x0A3C)
- PAIR(0x0A41, 0x0A42)
- PAIR(0x0A47, 0x0A48)
- PAIR(0x0A4B, 0x0A4D)
- PAIR(0x0A70, 0x0A71)
- PAIR(0x0A81, 0x0A82)
- PAIR(0x0ABC, 0x0ABC)
- BIG_(0x0AC1, 0x0AC5)
- PAIR(0x0AC7, 0x0AC8)
- PAIR(0x0ACD, 0x0ACD)
- PAIR(0x0AE2, 0x0AE3)
- PAIR(0x0B01, 0x0B01)
- PAIR(0x0B3C, 0x0B3C)
- PAIR(0x0B3F, 0x0B3F)
- PAIR(0x0B41, 0x0B43)
- PAIR(0x0B4D, 0x0B4D)
- PAIR(0x0B56, 0x0B56)
- PAIR(0x0B82, 0x0B82)
- PAIR(0x0BC0, 0x0BC0)
- PAIR(0x0BCD, 0x0BCD)
- PAIR(0x0C3E, 0x0C40)
- PAIR(0x0C46, 0x0C48)
- PAIR(0x0C4A, 0x0C4D)
- PAIR(0x0C55, 0x0C56)
- PAIR(0x0CBC, 0x0CBC)
- PAIR(0x0CBF, 0x0CBF)
- PAIR(0x0CC6, 0x0CC6)
- PAIR(0x0CCC, 0x0CCD)
- PAIR(0x0CE2, 0x0CE3)
- PAIR(0x0D41, 0x0D43)
- PAIR(0x0D4D, 0x0D4D)
- PAIR(0x0DCA, 0x0DCA)
- PAIR(0x0DD2, 0x0DD4)
- PAIR(0x0DD6, 0x0DD6)
- PAIR(0x0E31, 0x0E31)
- BIG_(0x0E34, 0x0E3A)
- BIG_(0x0E47, 0x0E4E)
- PAIR(0x0EB1, 0x0EB1)
- BIG_(0x0EB4, 0x0EB9)
- PAIR(0x0EBB, 0x0EBC)
- BIG_(0x0EC8, 0x0ECD)
- PAIR(0x0F18, 0x0F19)
- PAIR(0x0F35, 0x0F35)
- PAIR(0x0F37, 0x0F37)
- PAIR(0x0F39, 0x0F39)
- BIG_(0x0F71, 0x0F7E)
- BIG_(0x0F80, 0x0F84)
- PAIR(0x0F86, 0x0F87)
- PAIR(0x0FC6, 0x0FC6)
- BIG_(0x0F90, 0x0F97)
- BIG_(0x0F99, 0x0FBC)
- PAIR(0x102D, 0x1030)
- PAIR(0x1032, 0x1032)
- PAIR(0x1036, 0x1037)
- PAIR(0x1039, 0x1039)
- PAIR(0x1058, 0x1059)
- BIG_(0x1160, 0x11FF)
- PAIR(0x135F, 0x135F)
- PAIR(0x1712, 0x1714)
- PAIR(0x1732, 0x1734)
- PAIR(0x1752, 0x1753)
- PAIR(0x1772, 0x1773)
- PAIR(0x17B4, 0x17B5)
- BIG_(0x17B7, 0x17BD)
- PAIR(0x17C6, 0x17C6)
- BIG_(0x17C9, 0x17D3)
- PAIR(0x17DD, 0x17DD)
- PAIR(0x180B, 0x180D)
- PAIR(0x18A9, 0x18A9)
- PAIR(0x1920, 0x1922)
- PAIR(0x1927, 0x1928)
- PAIR(0x1932, 0x1932)
- PAIR(0x1939, 0x193B)
- PAIR(0x1A17, 0x1A18)
- PAIR(0x1B00, 0x1B03)
- PAIR(0x1B34, 0x1B34)
- BIG_(0x1B36, 0x1B3A)
- PAIR(0x1B3C, 0x1B3C)
- PAIR(0x1B42, 0x1B42)
- BIG_(0x1B6B, 0x1B73)
- BIG_(0x1DC0, 0x1DCA)
- PAIR(0x1DFE, 0x1DFF)
- BIG_(0x200B, 0x200F)
- BIG_(0x202A, 0x202E)
- PAIR(0x2060, 0x2063)
- BIG_(0x206A, 0x206F)
- BIG_(0x20D0, 0x20EF)
- BIG_(0x302A, 0x302F)
- PAIR(0x3099, 0x309A)
- /* Too big to be packed in PAIRs: */
- { 0xA806, 0xA806 },
- { 0xA80B, 0xA80B },
- { 0xA825, 0xA826 },
- { 0xFB1E, 0xFB1E },
- { 0xFE00, 0xFE0F },
- { 0xFE20, 0xFE23 },
- { 0xFEFF, 0xFEFF },
- { 0xFFF9, 0xFFFB }
-#undef BIG_
-#undef PAIR
- };
- static const uint16_t combining1[] = {
-#define BIG_(a,b)
-#define PAIR(a,b) (a << 2) | (b-a),
- /* Exact copy-n-paste of the above: */
- BIG_(0x0300, 0x036F)
- PAIR(0x0483, 0x0486)
- PAIR(0x0488, 0x0489)
- BIG_(0x0591, 0x05BD)
- PAIR(0x05BF, 0x05BF)
- PAIR(0x05C1, 0x05C2)
- PAIR(0x05C4, 0x05C5)
- PAIR(0x05C7, 0x05C7)
- PAIR(0x0600, 0x0603)
- BIG_(0x0610, 0x0615)
- BIG_(0x064B, 0x065E)
- PAIR(0x0670, 0x0670)
- BIG_(0x06D6, 0x06E4)
- PAIR(0x06E7, 0x06E8)
- PAIR(0x06EA, 0x06ED)
- PAIR(0x070F, 0x070F)
- PAIR(0x0711, 0x0711)
- BIG_(0x0730, 0x074A)
- BIG_(0x07A6, 0x07B0)
- BIG_(0x07EB, 0x07F3)
- PAIR(0x0901, 0x0902)
- PAIR(0x093C, 0x093C)
- BIG_(0x0941, 0x0948)
- PAIR(0x094D, 0x094D)
- PAIR(0x0951, 0x0954)
- PAIR(0x0962, 0x0963)
- PAIR(0x0981, 0x0981)
- PAIR(0x09BC, 0x09BC)
- PAIR(0x09C1, 0x09C4)
- PAIR(0x09CD, 0x09CD)
- PAIR(0x09E2, 0x09E3)
- PAIR(0x0A01, 0x0A02)
- PAIR(0x0A3C, 0x0A3C)
- PAIR(0x0A41, 0x0A42)
- PAIR(0x0A47, 0x0A48)
- PAIR(0x0A4B, 0x0A4D)
- PAIR(0x0A70, 0x0A71)
- PAIR(0x0A81, 0x0A82)
- PAIR(0x0ABC, 0x0ABC)
- BIG_(0x0AC1, 0x0AC5)
- PAIR(0x0AC7, 0x0AC8)
- PAIR(0x0ACD, 0x0ACD)
- PAIR(0x0AE2, 0x0AE3)
- PAIR(0x0B01, 0x0B01)
- PAIR(0x0B3C, 0x0B3C)
- PAIR(0x0B3F, 0x0B3F)
- PAIR(0x0B41, 0x0B43)
- PAIR(0x0B4D, 0x0B4D)
- PAIR(0x0B56, 0x0B56)
- PAIR(0x0B82, 0x0B82)
- PAIR(0x0BC0, 0x0BC0)
- PAIR(0x0BCD, 0x0BCD)
- PAIR(0x0C3E, 0x0C40)
- PAIR(0x0C46, 0x0C48)
- PAIR(0x0C4A, 0x0C4D)
- PAIR(0x0C55, 0x0C56)
- PAIR(0x0CBC, 0x0CBC)
- PAIR(0x0CBF, 0x0CBF)
- PAIR(0x0CC6, 0x0CC6)
- PAIR(0x0CCC, 0x0CCD)
- PAIR(0x0CE2, 0x0CE3)
- PAIR(0x0D41, 0x0D43)
- PAIR(0x0D4D, 0x0D4D)
- PAIR(0x0DCA, 0x0DCA)
- PAIR(0x0DD2, 0x0DD4)
- PAIR(0x0DD6, 0x0DD6)
- PAIR(0x0E31, 0x0E31)
- BIG_(0x0E34, 0x0E3A)
- BIG_(0x0E47, 0x0E4E)
- PAIR(0x0EB1, 0x0EB1)
- BIG_(0x0EB4, 0x0EB9)
- PAIR(0x0EBB, 0x0EBC)
- BIG_(0x0EC8, 0x0ECD)
- PAIR(0x0F18, 0x0F19)
- PAIR(0x0F35, 0x0F35)
- PAIR(0x0F37, 0x0F37)
- PAIR(0x0F39, 0x0F39)
- BIG_(0x0F71, 0x0F7E)
- BIG_(0x0F80, 0x0F84)
- PAIR(0x0F86, 0x0F87)
- PAIR(0x0FC6, 0x0FC6)
- BIG_(0x0F90, 0x0F97)
- BIG_(0x0F99, 0x0FBC)
- PAIR(0x102D, 0x1030)
- PAIR(0x1032, 0x1032)
- PAIR(0x1036, 0x1037)
- PAIR(0x1039, 0x1039)
- PAIR(0x1058, 0x1059)
- BIG_(0x1160, 0x11FF)
- PAIR(0x135F, 0x135F)
- PAIR(0x1712, 0x1714)
- PAIR(0x1732, 0x1734)
- PAIR(0x1752, 0x1753)
- PAIR(0x1772, 0x1773)
- PAIR(0x17B4, 0x17B5)
- BIG_(0x17B7, 0x17BD)
- PAIR(0x17C6, 0x17C6)
- BIG_(0x17C9, 0x17D3)
- PAIR(0x17DD, 0x17DD)
- PAIR(0x180B, 0x180D)
- PAIR(0x18A9, 0x18A9)
- PAIR(0x1920, 0x1922)
- PAIR(0x1927, 0x1928)
- PAIR(0x1932, 0x1932)
- PAIR(0x1939, 0x193B)
- PAIR(0x1A17, 0x1A18)
- PAIR(0x1B00, 0x1B03)
- PAIR(0x1B34, 0x1B34)
- BIG_(0x1B36, 0x1B3A)
- PAIR(0x1B3C, 0x1B3C)
- PAIR(0x1B42, 0x1B42)
- BIG_(0x1B6B, 0x1B73)
- BIG_(0x1DC0, 0x1DCA)
- PAIR(0x1DFE, 0x1DFF)
- BIG_(0x200B, 0x200F)
- BIG_(0x202A, 0x202E)
- PAIR(0x2060, 0x2063)
- BIG_(0x206A, 0x206F)
- BIG_(0x20D0, 0x20EF)
- BIG_(0x302A, 0x302F)
- PAIR(0x3099, 0x309A)
-#undef BIG_
-#undef PAIR
- };
- struct CHECK {
-#define BIG_(a,b) char big##a[b-a <= 3 ? -1 : 1];
-#define PAIR(a,b) char pair##a[b-a > 3 ? -1 : 1];
- /* Copy-n-paste it here again to verify correctness */
-#undef BIG_
-#undef PAIR
- };
-#endif
-
- if (ucs == 0)
- return 0;
-
- /* Test for 8-bit control characters (00-1f, 80-9f, 7f) */
- if ((ucs & ~0x80) < 0x20 || ucs == 0x7f)
- return -1;
- /* Quick abort if it is an obviously invalid char */
- if (ucs > LAST_SUPPORTED_WCHAR)
- return -1;
-
- /* Optimization: no combining chars below 0x300 */
- if (LAST_SUPPORTED_WCHAR < 0x300 || ucs < 0x300)
- return 1;
-
-#if LAST_SUPPORTED_WCHAR >= 0x300
- /* Binary search in table of non-spacing characters */
- if (in_interval_table(ucs, combining, ARRAY_SIZE(combining) - 1))
- return 0;
- if (in_uint16_table(ucs, combining1, ARRAY_SIZE(combining1) - 1))
- return 0;
-
- /* Optimization: all chars below 0x1100 are not double-width */
- if (LAST_SUPPORTED_WCHAR < 0x1100 || ucs < 0x1100)
- return 1;
-
-# if LAST_SUPPORTED_WCHAR >= 0x1100
- /* Invalid code points: */
- /* High (d800..dbff) and low (dc00..dfff) surrogates (valid only in UTF16) */
- /* Private Use Area (e000..f8ff) */
- /* Noncharacters fdd0..fdef */
- if ((LAST_SUPPORTED_WCHAR >= 0xd800 && ucs >= 0xd800 && ucs <= 0xf8ff)
- || (LAST_SUPPORTED_WCHAR >= 0xfdd0 && ucs >= 0xfdd0 && ucs <= 0xfdef)
- ) {
- return -1;
- }
- /* 0xfffe and 0xffff in every plane are invalid */
- if (LAST_SUPPORTED_WCHAR >= 0xfffe && ((ucs & 0xfffe) == 0xfffe)) {
- return -1;
- }
-
-# if LAST_SUPPORTED_WCHAR >= 0x10000
- if (ucs >= 0x10000) {
- /* Combining chars in Supplementary Multilingual Plane 0x1xxxx */
- static const struct interval combining0x10000[] = {
- { 0x0A01, 0x0A03 }, { 0x0A05, 0x0A06 }, { 0x0A0C, 0x0A0F },
- { 0x0A38, 0x0A3A }, { 0x0A3F, 0x0A3F }, { 0xD167, 0xD169 },
- { 0xD173, 0xD182 }, { 0xD185, 0xD18B }, { 0xD1AA, 0xD1AD },
- { 0xD242, 0xD244 }
- };
- /* Binary search in table of non-spacing characters in Supplementary Multilingual Plane */
- if (in_interval_table(ucs ^ 0x10000, combining0x10000, ARRAY_SIZE(combining0x10000) - 1))
- return 0;
- /* Check a few non-spacing chars in Supplementary Special-purpose Plane 0xExxxx */
- if (LAST_SUPPORTED_WCHAR >= 0xE0001
- && ( ucs == 0xE0001
- || (ucs >= 0xE0020 && ucs <= 0xE007F)
- || (ucs >= 0xE0100 && ucs <= 0xE01EF)
- )
- ) {
- return 0;
- }
- }
-# endif
-
- /* If we arrive here, ucs is not a combining or C0/C1 control character.
- * Check whether it's 1 char or 2-shar wide.
- */
- return 1 +
- ( (/*ucs >= 0x1100 &&*/ ucs <= 0x115f) /* Hangul Jamo init. consonants */
- || ucs == 0x2329 /* left-pointing angle bracket; also CJK punct. char */
- || ucs == 0x232a /* right-pointing angle bracket; also CJK punct. char */
- || (ucs >= 0x2e80 && ucs <= 0xa4cf && ucs != 0x303f) /* CJK ... Yi */
-# if LAST_SUPPORTED_WCHAR >= 0xac00
- || (ucs >= 0xac00 && ucs <= 0xd7a3) /* Hangul Syllables */
- || (ucs >= 0xf900 && ucs <= 0xfaff) /* CJK Compatibility Ideographs */
- || (ucs >= 0xfe10 && ucs <= 0xfe19) /* Vertical forms */
- || (ucs >= 0xfe30 && ucs <= 0xfe6f) /* CJK Compatibility Forms */
- || (ucs >= 0xff00 && ucs <= 0xff60) /* Fullwidth Forms */
- || (ucs >= 0xffe0 && ucs <= 0xffe6)
- || ((ucs >> 17) == (2 >> 1)) /* 20000..3ffff: Supplementary and Tertiary Ideographic Planes */
-# endif
- );
-# endif /* >= 0x1100 */
-#endif /* >= 0x300 */
-}
generated by cgit v1.1 at 2024-12-29 12:52:52 +0000