teken: fix style in teken_wcwidth.h

Reviewed by:	bojan.novkovic_fer.hr
MFC after:	2 weeks
Differential Revision:	https://reviews.freebsd.org/D42164

(cherry picked from commit 90367ba750bcbf3f9ac4609c3ec8df4ab95a22af)
Approved by:	re (gjb)

1 files changed, 135 insertions, 130 deletions

diff --git a/sys/teken/teken_wcwidth.h b/sys/teken/teken_wcwidth.h
index 14af2c6f9530..72df62704d73 100644
--- a/sys/teken/teken_wcwidth.h
+++ b/sys/teken/teken_wcwidth.h
@@ -11,112 +11,118 @@
 #define TEKEN_UTF8_INVALID_CODEPOINT -1
 
 struct interval {
-  teken_char_t first;
-  teken_char_t last;
+	teken_char_t first;
+	teken_char_t last;
 };
 
-/* auxiliary function for binary search in interval table */
-static inline int bisearch(teken_char_t ucs, const struct interval *table, int max) {
-  int min = 0;
-  int mid;
+/* Auxiliary function for binary search in interval table */
+static inline int
+bisearch(teken_char_t ucs, const struct interval *table, int max)
+{
+	int min = 0;
+	int mid;
 
-  if (ucs < table[0].first || ucs > table[max].last)
-    return 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;
-  }
+	if (ucs < table[0].first || ucs > table[max].last)
+		return (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;
+	return (0);
 }
 
-static inline int teken_wcwidth(teken_char_t ucs)
+static inline int
+teken_wcwidth(teken_char_t ucs)
 {
-  /* 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[] = {
-    { 0x0300, 0x036F }, { 0x0483, 0x0486 }, { 0x0488, 0x0489 },
-    { 0x0591, 0x05BD }, { 0x05BF, 0x05BF }, { 0x05C1, 0x05C2 },
-    { 0x05C4, 0x05C5 }, { 0x05C7, 0x05C7 }, { 0x0600, 0x0603 },
-    { 0x0610, 0x0615 }, { 0x064B, 0x065E }, { 0x0670, 0x0670 },
-    { 0x06D6, 0x06E4 }, { 0x06E7, 0x06E8 }, { 0x06EA, 0x06ED },
-    { 0x070F, 0x070F }, { 0x0711, 0x0711 }, { 0x0730, 0x074A },
-    { 0x07A6, 0x07B0 }, { 0x07EB, 0x07F3 }, { 0x0901, 0x0902 },
-    { 0x093C, 0x093C }, { 0x0941, 0x0948 }, { 0x094D, 0x094D },
-    { 0x0951, 0x0954 }, { 0x0962, 0x0963 }, { 0x0981, 0x0981 },
-    { 0x09BC, 0x09BC }, { 0x09C1, 0x09C4 }, { 0x09CD, 0x09CD },
-    { 0x09E2, 0x09E3 }, { 0x0A01, 0x0A02 }, { 0x0A3C, 0x0A3C },
-    { 0x0A41, 0x0A42 }, { 0x0A47, 0x0A48 }, { 0x0A4B, 0x0A4D },
-    { 0x0A70, 0x0A71 }, { 0x0A81, 0x0A82 }, { 0x0ABC, 0x0ABC },
-    { 0x0AC1, 0x0AC5 }, { 0x0AC7, 0x0AC8 }, { 0x0ACD, 0x0ACD },
-    { 0x0AE2, 0x0AE3 }, { 0x0B01, 0x0B01 }, { 0x0B3C, 0x0B3C },
-    { 0x0B3F, 0x0B3F }, { 0x0B41, 0x0B43 }, { 0x0B4D, 0x0B4D },
-    { 0x0B56, 0x0B56 }, { 0x0B82, 0x0B82 }, { 0x0BC0, 0x0BC0 },
-    { 0x0BCD, 0x0BCD }, { 0x0C3E, 0x0C40 }, { 0x0C46, 0x0C48 },
-    { 0x0C4A, 0x0C4D }, { 0x0C55, 0x0C56 }, { 0x0CBC, 0x0CBC },
-    { 0x0CBF, 0x0CBF }, { 0x0CC6, 0x0CC6 }, { 0x0CCC, 0x0CCD },
-    { 0x0CE2, 0x0CE3 }, { 0x0D41, 0x0D43 }, { 0x0D4D, 0x0D4D },
-    { 0x0DCA, 0x0DCA }, { 0x0DD2, 0x0DD4 }, { 0x0DD6, 0x0DD6 },
-    { 0x0E31, 0x0E31 }, { 0x0E34, 0x0E3A }, { 0x0E47, 0x0E4E },
-    { 0x0EB1, 0x0EB1 }, { 0x0EB4, 0x0EB9 }, { 0x0EBB, 0x0EBC },
-    { 0x0EC8, 0x0ECD }, { 0x0F18, 0x0F19 }, { 0x0F35, 0x0F35 },
-    { 0x0F37, 0x0F37 }, { 0x0F39, 0x0F39 }, { 0x0F71, 0x0F7E },
-    { 0x0F80, 0x0F84 }, { 0x0F86, 0x0F87 }, { 0x0F90, 0x0F97 },
-    { 0x0F99, 0x0FBC }, { 0x0FC6, 0x0FC6 }, { 0x102D, 0x1030 },
-    { 0x1032, 0x1032 }, { 0x1036, 0x1037 }, { 0x1039, 0x1039 },
-    { 0x1058, 0x1059 }, { 0x1160, 0x11FF }, { 0x135F, 0x135F },
-    { 0x1712, 0x1714 }, { 0x1732, 0x1734 }, { 0x1752, 0x1753 },
-    { 0x1772, 0x1773 }, { 0x17B4, 0x17B5 }, { 0x17B7, 0x17BD },
-    { 0x17C6, 0x17C6 }, { 0x17C9, 0x17D3 }, { 0x17DD, 0x17DD },
-    { 0x180B, 0x180D }, { 0x18A9, 0x18A9 }, { 0x1920, 0x1922 },
-    { 0x1927, 0x1928 }, { 0x1932, 0x1932 }, { 0x1939, 0x193B },
-    { 0x1A17, 0x1A18 }, { 0x1B00, 0x1B03 }, { 0x1B34, 0x1B34 },
-    { 0x1B36, 0x1B3A }, { 0x1B3C, 0x1B3C }, { 0x1B42, 0x1B42 },
-    { 0x1B6B, 0x1B73 }, { 0x1DC0, 0x1DCA }, { 0x1DFE, 0x1DFF },
-    { 0x200B, 0x200F }, { 0x202A, 0x202E }, { 0x2060, 0x2063 },
-    { 0x206A, 0x206F }, { 0x20D0, 0x20EF }, { 0x302A, 0x302F },
-    { 0x3099, 0x309A }, { 0xA806, 0xA806 }, { 0xA80B, 0xA80B },
-    { 0xA825, 0xA826 }, { 0xFB1E, 0xFB1E }, { 0xFE00, 0xFE0F },
-    { 0xFE20, 0xFE23 }, { 0xFEFF, 0xFEFF }, { 0xFFF9, 0xFFFB },
-    { 0x10A01, 0x10A03 }, { 0x10A05, 0x10A06 }, { 0x10A0C, 0x10A0F },
-    { 0x10A38, 0x10A3A }, { 0x10A3F, 0x10A3F }, { 0x1D167, 0x1D169 },
-    { 0x1D173, 0x1D182 }, { 0x1D185, 0x1D18B }, { 0x1D1AA, 0x1D1AD },
-    { 0x1D242, 0x1D244 }, { 0xE0001, 0xE0001 }, { 0xE0020, 0xE007F },
-    { 0xE0100, 0xE01EF }
-  };
-
-  /* test for 8-bit control characters */
-  if (ucs == 0)
-    return 0;
-  if (ucs < 32 || (ucs >= 0x7f && ucs < 0xa0))
-    return -1;
+	/*
+	 * 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[] = {
+		{ 0x0300, 0x036F }, { 0x0483, 0x0486 }, { 0x0488, 0x0489 },
+		{ 0x0591, 0x05BD }, { 0x05BF, 0x05BF }, { 0x05C1, 0x05C2 },
+		{ 0x05C4, 0x05C5 }, { 0x05C7, 0x05C7 }, { 0x0600, 0x0603 },
+		{ 0x0610, 0x0615 }, { 0x064B, 0x065E }, { 0x0670, 0x0670 },
+		{ 0x06D6, 0x06E4 }, { 0x06E7, 0x06E8 }, { 0x06EA, 0x06ED },
+		{ 0x070F, 0x070F }, { 0x0711, 0x0711 }, { 0x0730, 0x074A },
+		{ 0x07A6, 0x07B0 }, { 0x07EB, 0x07F3 }, { 0x0901, 0x0902 },
+		{ 0x093C, 0x093C }, { 0x0941, 0x0948 }, { 0x094D, 0x094D },
+		{ 0x0951, 0x0954 }, { 0x0962, 0x0963 }, { 0x0981, 0x0981 },
+		{ 0x09BC, 0x09BC }, { 0x09C1, 0x09C4 }, { 0x09CD, 0x09CD },
+		{ 0x09E2, 0x09E3 }, { 0x0A01, 0x0A02 }, { 0x0A3C, 0x0A3C },
+		{ 0x0A41, 0x0A42 }, { 0x0A47, 0x0A48 }, { 0x0A4B, 0x0A4D },
+		{ 0x0A70, 0x0A71 }, { 0x0A81, 0x0A82 }, { 0x0ABC, 0x0ABC },
+		{ 0x0AC1, 0x0AC5 }, { 0x0AC7, 0x0AC8 }, { 0x0ACD, 0x0ACD },
+		{ 0x0AE2, 0x0AE3 }, { 0x0B01, 0x0B01 }, { 0x0B3C, 0x0B3C },
+		{ 0x0B3F, 0x0B3F }, { 0x0B41, 0x0B43 }, { 0x0B4D, 0x0B4D },
+		{ 0x0B56, 0x0B56 }, { 0x0B82, 0x0B82 }, { 0x0BC0, 0x0BC0 },
+		{ 0x0BCD, 0x0BCD }, { 0x0C3E, 0x0C40 }, { 0x0C46, 0x0C48 },
+		{ 0x0C4A, 0x0C4D }, { 0x0C55, 0x0C56 }, { 0x0CBC, 0x0CBC },
+		{ 0x0CBF, 0x0CBF }, { 0x0CC6, 0x0CC6 }, { 0x0CCC, 0x0CCD },
+		{ 0x0CE2, 0x0CE3 }, { 0x0D41, 0x0D43 }, { 0x0D4D, 0x0D4D },
+		{ 0x0DCA, 0x0DCA }, { 0x0DD2, 0x0DD4 }, { 0x0DD6, 0x0DD6 },
+		{ 0x0E31, 0x0E31 }, { 0x0E34, 0x0E3A }, { 0x0E47, 0x0E4E },
+		{ 0x0EB1, 0x0EB1 }, { 0x0EB4, 0x0EB9 }, { 0x0EBB, 0x0EBC },
+		{ 0x0EC8, 0x0ECD }, { 0x0F18, 0x0F19 }, { 0x0F35, 0x0F35 },
+		{ 0x0F37, 0x0F37 }, { 0x0F39, 0x0F39 }, { 0x0F71, 0x0F7E },
+		{ 0x0F80, 0x0F84 }, { 0x0F86, 0x0F87 }, { 0x0F90, 0x0F97 },
+		{ 0x0F99, 0x0FBC }, { 0x0FC6, 0x0FC6 }, { 0x102D, 0x1030 },
+		{ 0x1032, 0x1032 }, { 0x1036, 0x1037 }, { 0x1039, 0x1039 },
+		{ 0x1058, 0x1059 }, { 0x1160, 0x11FF }, { 0x135F, 0x135F },
+		{ 0x1712, 0x1714 }, { 0x1732, 0x1734 }, { 0x1752, 0x1753 },
+		{ 0x1772, 0x1773 }, { 0x17B4, 0x17B5 }, { 0x17B7, 0x17BD },
+		{ 0x17C6, 0x17C6 }, { 0x17C9, 0x17D3 }, { 0x17DD, 0x17DD },
+		{ 0x180B, 0x180D }, { 0x18A9, 0x18A9 }, { 0x1920, 0x1922 },
+		{ 0x1927, 0x1928 }, { 0x1932, 0x1932 }, { 0x1939, 0x193B },
+		{ 0x1A17, 0x1A18 }, { 0x1B00, 0x1B03 }, { 0x1B34, 0x1B34 },
+		{ 0x1B36, 0x1B3A }, { 0x1B3C, 0x1B3C }, { 0x1B42, 0x1B42 },
+		{ 0x1B6B, 0x1B73 }, { 0x1DC0, 0x1DCA }, { 0x1DFE, 0x1DFF },
+		{ 0x200B, 0x200F }, { 0x202A, 0x202E }, { 0x2060, 0x2063 },
+		{ 0x206A, 0x206F }, { 0x20D0, 0x20EF }, { 0x302A, 0x302F },
+		{ 0x3099, 0x309A }, { 0xA806, 0xA806 }, { 0xA80B, 0xA80B },
+		{ 0xA825, 0xA826 }, { 0xFB1E, 0xFB1E }, { 0xFE00, 0xFE0F },
+		{ 0xFE20, 0xFE23 }, { 0xFEFF, 0xFEFF }, { 0xFFF9, 0xFFFB },
+		{ 0x10A01, 0x10A03 }, { 0x10A05, 0x10A06 }, { 0x10A0C, 0x10A0F },
+		{ 0x10A38, 0x10A3A }, { 0x10A3F, 0x10A3F }, { 0x1D167, 0x1D169 },
+		{ 0x1D173, 0x1D182 }, { 0x1D185, 0x1D18B }, { 0x1D1AA, 0x1D1AD },
+		{ 0x1D242, 0x1D244 }, { 0xE0001, 0xE0001 }, { 0xE0020, 0xE007F },
+		{ 0xE0100, 0xE01EF }
+	};
 
-  /* binary search in table of non-spacing characters */
-  if (bisearch(ucs, combining,
-	       sizeof(combining) / sizeof(struct interval) - 1))
-    return 0;
+	/* Test for 8-bit control characters */
+	if (ucs == 0)
+		return (0);
+	if (ucs < 32 || (ucs >= 0x7f && ucs < 0xa0))
+		return (-1);
 
-  /* if we arrive here, ucs is not a combining or C0/C1 control character */
+	/* Binary search in table of non-spacing characters */
+	if (bisearch(ucs, combining, sizeof(combining) /
+	    sizeof(struct interval) - 1))
+		return (0);
 
-  return 1 +
-    (ucs >= 0x1100 &&
-     (ucs <= 0x115f ||                    /* Hangul Jamo init. consonants */
-      ucs == 0x2329 || ucs == 0x232a ||
-      (ucs >= 0x2e80 && ucs <= 0xa4cf &&
-       ucs != 0x303f) ||                  /* CJK ... Yi */
-      (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 >= 0x20000 && ucs <= 0x2fffd) ||
-      (ucs >= 0x30000 && ucs <= 0x3fffd)));
+	/*
+	 * If we arrive here, ucs is not a combining or C0/C1 control character
+	 */
+	return (1 +
+	    (ucs >= 0x1100 &&
+	    (ucs <= 0x115f ||			/* Hangul Jamo init. consonants */
+	    ucs == 0x2329 || ucs == 0x232a ||
+	    (ucs >= 0x2e80 && ucs <= 0xa4cf &&
+	    ucs != 0x303f) ||			/* CJK ... Yi */
+	    (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 >= 0x20000 && ucs <= 0x2fffd) ||
+	    (ucs >= 0x30000 && ucs <= 0x3fffd))));
 }
 
 /*
@@ -127,39 +133,38 @@ static inline int teken_wcwidth(teken_char_t ucs)
 static inline teken_char_t
 teken_utf8_bytes_to_codepoint(uint8_t bytes[4], int nbytes)
 {
+	/*
+	 * Check for malformed characters by comparing 'nbytes' to the byte
+	 * length of the character.
+	 *
+	 * The table in section 3 of RFC 3629 defines 4 different values
+	 * indicating the length of a UTF-8 byte sequence.
+	 *
+	 * 0xxxxxxx -> 1 byte
+	 * 110xxxxx -> 2 bytes
+	 * 1110xxxx -> 3 bytes
+	 * 11110xxx -> 4 bytes
+	 *
+	 * The length is determined by the higher-order bits in the leading
+	 * octet (except in the first case, where an MSB of 0 means a byte
+	 * length of 1). Here we flip the 4 upper bits and count the leading
+	 * zeros using __builtin_clz() to determine the number of bytes.
+	 */
+	if (__builtin_clz(~(bytes[0] & 0xf0) << 24) != nbytes)
+		return (TEKEN_UTF8_INVALID_CODEPOINT);
 
- /*
-  * Check for malformed characters by comparing 'nbytes'
-  * to the byte length of the character.
-  *
-  * The table in section 3 of RFC 3629 defines 4 different
-  * values indicating the length of a UTF-8 byte sequence.
-  *
-  * 0xxxxxxx -> 1 byte
-  * 110xxxxx -> 2 bytes
-  * 1110xxxx -> 3 bytes
-  * 11110xxx -> 4 bytes
-  *
-  * The length is determined by the higher-order bits in
-  * the leading octet (except in the first case, where an MSB
-  * of 0 means a byte length of 1). Here we flip the 4 upper
-  * bits and count the leading zeros using __builtin_clz()
-  * to determine the number of bytes.
-  */
-  if (__builtin_clz(~(bytes[0] & 0xf0) << 24) != nbytes)
-    return (TEKEN_UTF8_INVALID_CODEPOINT);
-
-  switch (nbytes) {
-  case 1:
-    return (bytes[0] & 0x7f);
-  case 2:
-    return (bytes[0] & 0x1f) << 6 | (bytes[1] & 0x3f);
-  case 3:
-    return (bytes[0] & 0xf) << 12 | (bytes[1] & 0x3f) << 6 | (bytes[2] & 0x3f);
-  case 4:
-    return (bytes[0] & 0x7) << 18 | (bytes[1] & 0x3f) << 12 |
-	(bytes[2] & 0x3f) << 6 | (bytes[3] & 0x3f);
-  default:
-    return (TEKEN_UTF8_INVALID_CODEPOINT);
-  }
+	switch (nbytes) {
+	case 1:
+		return (bytes[0] & 0x7f);
+	case 2:
+		return (bytes[0] & 0x1f) << 6 | (bytes[1] & 0x3f);
+	case 3:
+		return (bytes[0] & 0xf) << 12 | (bytes[1] & 0x3f) << 6 |
+		    (bytes[2] & 0x3f);
+	case 4:
+		return (bytes[0] & 0x7) << 18 | (bytes[1] & 0x3f) << 12 |
+		    (bytes[2] & 0x3f) << 6 | (bytes[3] & 0x3f);
+	default:
+		return (TEKEN_UTF8_INVALID_CODEPOINT);
+	}
 }