less-25/less/charset.c

454 prutfchar(ch)
455 	LWCHAR ch;
459 	if (ch == ESC)
461   	else if (ch < 128 && control_char(ch))
463 		if (!control_char(ch ^ 0100))
464 			SNPRINTF1(buf, sizeof(buf), "^%c", ((char) ch) ^ 0100);
466 			SNPRINTF1(buf, sizeof(buf), binfmt, (char) ch);
467 	} else if (is_ubin_char(ch))
468 		SNPRINTF1(buf, sizeof(buf), utfbinfmt, ch);
472 		if (ch >= 0x80000000)
475 			ch = 0xFFFD;
478 			len =   (ch < 0x80) ? 1
479 			      : (ch < 0x800) ? 2
480 			      : (ch < 0x10000) ? 3
481 			      : (ch < 0x200000) ? 4
482 			      : (ch < 0x4000000) ? 5
487 			*buf = (char) ch;
493 				buf[len] = (char) (0x80 | (ch & 0x3F));
494 				ch >>= 6;
496 			*buf |= ch;
506 utf_len(ch)
507 	char ch;
509 	if ((ch & 0x80) == 0)
511 	if ((ch & 0xE0) == 0xC0)
513 	if ((ch & 0xF0) == 0xE0)
515 	if ((ch & 0xF8) == 0xF0)
517 	if ((ch & 0xFC) == 0xF8)
519 	if ((ch & 0xFE) == 0xFC)
615 put_wchar(pp, ch)
617 	LWCHAR ch;
619 	if (!utf_mode || ch < 0x80)
622 		*(*pp)++ = (char) ch;
623 	} else if (ch < 0x800)
626 		*(*pp)++ = (char) (0xC0 | ((ch >> 6) & 0x1F));
627 		*(*pp)++ = (char) (0x80 | (ch & 0x3F));
628 	} else if (ch < 0x10000)
631 		*(*pp)++ = (char) (0xE0 | ((ch >> 12) & 0x0F));
632 		*(*pp)++ = (char) (0x80 | ((ch >> 6) & 0x3F));
633 		*(*pp)++ = (char) (0x80 | (ch & 0x3F));
634 	} else if (ch < 0x200000)
637 		*(*pp)++ = (char) (0xF0 | ((ch >> 18) & 0x07));
638 		*(*pp)++ = (char) (0x80 | ((ch >> 12) & 0x3F));
639 		*(*pp)++ = (char) (0x80 | ((ch >> 6) & 0x3F));
640 		*(*pp)++ = (char) (0x80 | (ch & 0x3F));
641 	} else if (ch < 0x4000000)
644 		*(*pp)++ = (char) (0xF0 | ((ch >> 24) & 0x03));
645 		*(*pp)++ = (char) (0x80 | ((ch >> 18) & 0x3F));
646 		*(*pp)++ = (char) (0x80 | ((ch >> 12) & 0x3F));
647 		*(*pp)++ = (char) (0x80 | ((ch >> 6) & 0x3F));
648 		*(*pp)++ = (char) (0x80 | (ch & 0x3F));
652 		*(*pp)++ = (char) (0xF0 | ((ch >> 30) & 0x01));
653 		*(*pp)++ = (char) (0x80 | ((ch >> 24) & 0x3F));
654 		*(*pp)++ = (char) (0x80 | ((ch >> 18) & 0x3F));
655 		*(*pp)++ = (char) (0x80 | ((ch >> 12) & 0x3F));
656 		*(*pp)++ = (char) (0x80 | ((ch >> 6) & 0x3F));
657 		*(*pp)++ = (char) (0x80 | (ch & 0x3F));
670 	LWCHAR ch;
678 			ch = (LWCHAR) ((p < limit) ? *p++ : 0);
680 			ch = (LWCHAR) ((p > limit) ? *--p : 0);
686 			ch = 0;
690 			ch = get_wchar(p);
698 			ch = get_wchar(--p);
700 			ch = 0;
703 	return ch;
1090 is_in_table(ch, table, tsize)
1091 	LWCHAR ch;
1099 	if (ch < table[0].first)
1106 		if (ch > table[mid].last)
1108 		else if (ch < table[mid].first)
1121 is_composing_char(ch)
1122 	LWCHAR ch;
1124 	return is_in_table(ch, comp_table, (sizeof(comp_table) / sizeof(*comp_table)));
1131 is_ubin_char(ch)
1132 	LWCHAR ch;
1134 	return is_in_table(ch, ubin_table, (sizeof(ubin_table) / sizeof(*ubin_table)));
1141 is_wide_char(ch)
1142 	LWCHAR ch;
1144 	return is_in_table(ch, wide_table, (sizeof(wide_table) / sizeof(*wide_table)));