libs/bsd/vis.c

164 do_hvis(wchar_t *dst, wint_t c, int flags, wint_t nextc, const wchar_t *extra)
172 		dst = do_svis(dst, c, flags, nextc, extra);
174 		*dst++ = L'%';
175 		*dst++ = xtoa(((unsigned int)c >> 4) & 0xf);
176 		*dst++ = xtoa((unsigned int)c & 0xf);
179 	return dst;
187 do_mvis(wchar_t *dst, wint_t c, int flags, wint_t nextc, const wchar_t *extra)
196 		*dst++ = L'=';
197 		*dst++ = XTOA(((unsigned int)c >> 4) & 0xf);
198 		*dst++ = XTOA((unsigned int)c & 0xf);
200 		dst = do_svis(dst, c, flags, nextc, extra);
201 	return dst;
208 do_mbyte(wchar_t *dst, wint_t c, int flags, wint_t nextc, int iswextra)
213 			*dst++ = L'\\'; *dst++ = L'n';
214 			return dst;
216 			*dst++ = L'\\'; *dst++ = L'r';
217 			return dst;
219 			*dst++ = L'\\'; *dst++ = L'b';
220 			return dst;
222 			*dst++ = L'\\'; *dst++ = L'a';
223 			return dst;
225 			*dst++ = L'\\'; *dst++ = L'v';
226 			return dst;
228 			*dst++ = L'\\'; *dst++ = L't';
229 			return dst;
231 			*dst++ = L'\\'; *dst++ = L'f';
232 			return dst;
234 			*dst++ = L'\\'; *dst++ = L's';
235 			return dst;
237 			*dst++ = L'\\'; *dst++ = L'0';
239 				*dst++ = L'0';
240 				*dst++ = L'0';
242 			return dst;
260 				*dst++ = L'\\';
261 				*dst++ = c;
262 				return dst;
267 		*dst++ = L'\\';
268 		*dst++ = (u_char)(((uint32_t)(u_char)c >> 6) & 03) + L'0';
269 		*dst++ = (u_char)(((uint32_t)(u_char)c >> 3) & 07) + L'0';
270 		*dst++ =			     (c	      & 07) + L'0';
273 			*dst++ = L'\\';
277 			*dst++ = L'M';
281 			*dst++ = L'^';
283 				*dst++ = L'?';
285 				*dst++ = c + L'@';
287 			*dst++ = L'-';
288 			*dst++ = c;
292 	return dst;
297  * dst:	      Pointer to the destination buffer
305 do_svis(wchar_t *dst, wint_t c, int flags, wint_t nextc, const wchar_t *extra)
313 		*dst++ = c;
314 		return dst;
324 			dst = do_mbyte(dst, (wint_t)(
329 	return dst;
353 	wchar_t *dst, *d;
360 	if ((dst = calloc(len + MAXEXTRAS, sizeof(*dst))) == NULL)
363 	if ((flags & VIS_NOLOCALE) || mbsrtowcs(dst, &src, len, &mbstate) == (size_t)-1) {
366 			dst[i] = (wchar_t)(u_char)src[i];
367 		d = dst + len;
369 		d = dst + wcslen(dst);
386 	return dst;
398 	wchar_t *dst, *src, *pdst, *psrc, *start, *extra;
447 	dst = pdst;
520 	for (start = dst; len > 0; len--) {
522 		dst = (*f)(dst, c, flags, len >= 1 ? *src : L'\0', extra);
523 		if (dst == NULL) {
530 	*dst = L'\0';
542 	for (dst = start; len > 0; len--) {
544 			clen = wcrtomb(mbdst, *dst, &mbstate);
559 				if ((*dst & wmsk) || i == 0)
561 					    (uint64_t)(*dst & bmsk) >>
572 		dst++;
715  * strvis - visually encode characters from src into dst
718  *	expansion.  The length of dst, not including the trailing NULL,
742  * strvisx - visually encode characters from src into dst
745  *	expansion.  The length of dst, not including the trailing NULL,
748  *	Strvisx encodes exactly len characters from src into dst.