file_cmds-242/dd/conv.c

9  * Redistribution and use in source and binary forms, with or without
14  * 2. Redistributions in binary form must reproduce the above copyright
15  *    notice, this list of conditions and the following disclaimer in the
69 		for (inp = in.dbp - (cnt = in.dbrcnt); cnt--; ++inp)
73 	out.dbp = in.dbp;
74 	out.dbcnt = in.dbcnt;
76 	if (in.dbcnt >= out.dbsz) {
85 		in.dbp = out.dbp;
86 		in.dbcnt = out.dbcnt;
93 	/* Just update the count, everything is already in the buffer. */
94 	if (in.dbcnt)
95 		out.dbcnt = in.dbcnt;
102  * max in buffer:  MAX(ibs, cbsz)
115 	 * Record truncation can cross block boundaries.  If currently in a
121 		for (inp = in.db, cnt = in.dbrcnt; cnt && *inp++ != '\n'; --cnt)
124 			in.dbcnt = 0;
125 			in.dbp = in.db;
130 		in.dbcnt = cnt - 1;
131 		in.dbp = inp + cnt - 1;
139 	for (inp = in.dbp - in.dbcnt, outp = out.dbp; in.dbcnt;) {
140 		maxlen = MIN(cbsz, in.dbcnt);
153 		if (ch != '\n' && in.dbcnt < cbsz) {
154 			(void)memmove(in.db, in.dbp - in.dbcnt, in.dbcnt);
159 		in.dbcnt -= cnt;
161 			--in.dbcnt;
171 			if (!in.dbcnt || *inp != '\n')
175 			for (; in.dbcnt && *inp++ != '\n'; --in.dbcnt);
176 			if (!in.dbcnt)
179 				--in.dbcnt;
188 	in.dbp = in.db + in.dbcnt;
198 	 * translation.  The bottom line is that anything left in the input
199 	 * buffer is a truncated record.  Anything left in the output buffer
202 	if (in.dbcnt) {
204 		(void)memmove(out.dbp, in.dbp - in.dbcnt, in.dbcnt);
205 		(void)memset(out.dbp + in.dbcnt, ctab ? ctab[' '] : ' ',
206 		    cbsz - in.dbcnt);
215  * max in buffer:  MAX(ibs, cbsz) + cbsz
227 		for (cnt = in.dbrcnt, inp = in.dbp; cnt--;) {
236 	for (inp = in.db; in.dbcnt >= cbsz; inp += cbsz, in.dbcnt -= cbsz) {
249 	if (in.dbcnt)
250 		(void)memmove(in.db, in.dbp - in.dbcnt, in.dbcnt);
251 	in.dbp = in.db + in.dbcnt;
260 	if (in.dbcnt) {
261 		warnx("%s: short input record", in.name);
262 		for (t = in.db + in.dbcnt - 1; t >= in.db && *t == ' '; --t)
264 		if (t >= in.db) {
265 			cnt = t - in.db + 1;
266 			(void)memmove(out.dbp, in.db, cnt);