2 * Copyright (c) 1992, 1993, 1994
3 * The Regents of the University of California. All rights reserved.
4 * Copyright (c) 1992, 1993, 1994, 1995, 1996
5 * Keith Bostic. All rights reserved.
7 * See the LICENSE file for redistribution information.
13 static const char sccsid[] = "@(#)v_ulcase.c 10.7 (Berkeley) 3/6/96";
16 #include <sys/types.h>
17 #include <sys/queue.h>
20 #include <bitstring.h>
28 #include "../common/common.h"
31 static int ulcase __P((SCR *, recno_t, CHAR_T *, size_t, size_t, size_t));
34 * v_ulcase -- [count]~
35 * Toggle upper & lower case letters.
38 * Historic vi didn't permit ~ to cross newline boundaries. I can
39 * think of no reason why it shouldn't, which at least lets the user
40 * auto-repeat through a paragraph.
43 * In historic vi, the count was ignored. It would have been better
44 * if there had been an associated motion, but it's too late to make
45 * that the default now.
47 * PUBLIC: int v_ulcase __P((SCR *, VICMD *));
55 size_t cno, lcnt, len;
59 lno = vp->m_start.lno;
60 cno = vp->m_start.cno;
62 for (cnt = F_ISSET(vp, VC_C1SET) ? vp->count : 1; cnt > 0; cno = 0) {
63 /* SOF is an error, EOF is an infinite count sink. */
64 if (db_get(sp, lno, 0, &p, &len)) {
66 v_emsg(sp, NULL, VIM_EMPTY);
73 /* Empty lines decrement the count by one. */
80 if (cno + cnt >= len) {
84 vp->m_final.cno = len - 1;
89 vp->m_final.cno = lcnt + 1;
92 if (ulcase(sp, lno, p, len, cno, lcnt))
99 vp->m_final.lno = lno;
104 * v_mulcase -- [count]~[count]motion
105 * Toggle upper & lower case letters over a range.
107 * PUBLIC: int v_mulcase __P((SCR *, VICMD *));
118 for (lno = vp->m_start.lno;;) {
119 if (db_get(sp, lno, DBG_FATAL, &p, &len))
121 if (len != 0 && ulcase(sp, lno, p, len,
122 lno == vp->m_start.lno ? vp->m_start.cno : 0,
123 !F_ISSET(vp, VM_LMODE) &&
124 lno == vp->m_stop.lno ? vp->m_stop.cno : len))
127 if (++lno > vp->m_stop.lno)
133 * I didn't create a new motion command when I added motion semantics
134 * for ~. While that's the correct way to do it, that choice would
135 * have required changes all over the vi directory for little gain.
136 * Instead, we pretend it's a yank command. Note, this means that we
137 * follow the cursor motion rules for yank commands, but that seems
145 * Change part of a line's case.
148 ulcase(sp, lno, lp, len, scno, ecno)
152 size_t len, scno, ecno;
159 GET_SPACE_RET(sp, bp, blen, len);
160 memmove(bp, lp, len);
163 for (p = bp + scno, t = bp + ecno + 1; p < t; ++p) {
168 } else if (isupper(ch)) {
174 if (change && db_set(sp, lno, bp, len))
177 FREE_SPACE(sp, bp, blen);