openssh/openbsd-compat/vis.c

62 vis(char *dst, int c, int flag, int nextc)
67 			*dst++ = '\\';
68 		*dst++ = c;
69 		*dst = '\0';
70 		return (dst);
76 			*dst++ = '\\';
77 			*dst++ = 'n';
80 			*dst++ = '\\';
81 			*dst++ = 'r';
84 			*dst++ = '\\';
85 			*dst++ = 'b';
88 			*dst++ = '\\';
89 			*dst++ = 'a';
92 			*dst++ = '\\';
93 			*dst++ = 'v';
96 			*dst++ = '\\';
97 			*dst++ = 't';
100 			*dst++ = '\\';
101 			*dst++ = 'f';
104 			*dst++ = '\\';
105 			*dst++ = 's';
108 			*dst++ = '\\';
109 			*dst++ = '0';
111 				*dst++ = '0';
112 				*dst++ = '0';
119 		*dst++ = '\\';
120 		*dst++ = ((u_char)c >> 6 & 07) + '0';
121 		*dst++ = ((u_char)c >> 3 & 07) + '0';
122 		*dst++ = ((u_char)c & 07) + '0';
126 		*dst++ = '\\';
129 		*dst++ = 'M';
132 		*dst++ = '^';
134 			*dst++ = '?';
136 			*dst++ = c + '@';
138 		*dst++ = '-';
139 		*dst++ = c;
142 	*dst = '\0';
143 	return (dst);
148  * strvis, strnvis, strvisx - visually encode characters from src into dst
151  *	expansion.  The length of dst, not including the trailing NULL,
157  *	Strvisx encodes exactly len bytes from src into dst.
161 strvis(char *dst, const char *src, int flag)
166 	for (start = dst; (c = *src);)
167 		dst = vis(dst, c, flag, *++src);
168 	*dst = '\0';
169 	return (dst - start);
174 strnvis(char *dst, const char *src, size_t siz, int flag)
181 	for (start = dst, end = start + siz - 1; (c = *src) && dst < end; ) {
186 				if (dst + 1 >= end) {
190 				*dst++ = '\\';
193 			*dst++ = c;
197 			if (dst + i <= end) {
198 				memcpy(dst, tbuf, i);
199 				dst += i;
207 		*dst = '\0';
208 	if (dst + i > end) {
211 			dst += vis(tbuf, c, flag, *++src) - tbuf;
213 	return (dst - start);
236 strvisx(char *dst, const char *src, size_t len, int flag)
241 	for (start = dst; len > 1; len--) {
243 		dst = vis(dst, c, flag, *++src);
246 		dst = vis(dst, *src, flag, '\0');
247 	*dst = '\0';
248 	return (dst - start);