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[] = "@(#)ex_global.c 10.22 (Berkeley) 10/10/96";
16 #include <sys/types.h>
17 #include <sys/queue.h>
19 #include <bitstring.h>
28 #include "../common/common.h"
30 enum which {GLOBAL, V};
32 static int ex_g_setup __P((SCR *, EXCMD *, enum which));
35 * ex_global -- [line [,line]] g[lobal][!] /pattern/ [commands]
36 * Exec on lines matching a pattern.
38 * PUBLIC: int ex_global __P((SCR *, EXCMD *));
45 return (ex_g_setup(sp,
46 cmdp, FL_ISSET(cmdp->iflags, E_C_FORCE) ? V : GLOBAL));
50 * ex_v -- [line [,line]] v /pattern/ [commands]
51 * Exec on lines not matching a pattern.
53 * PUBLIC: int ex_v __P((SCR *, EXCMD *));
60 return (ex_g_setup(sp, cmdp, V));
65 * Ex global and v commands.
68 ex_g_setup(sp, cmdp, cmd)
87 if (F_ISSET(sp, SC_EX_GLOBAL)) {
89 "124|The %s command can't be used as part of a global or v command",
95 * Skip leading white space. Historic vi allowed any non-alphanumeric
96 * to serve as the global command delimiter.
100 for (p = cmdp->argv[0]->bp; isblank(*p); ++p);
101 if (*p == '\0' || isalnum(*p) ||
102 *p == '\\' || *p == '|' || *p == '\n') {
103 usage: ex_emsg(sp, cmdp->cmd->usage, EXM_USAGE);
109 * Get the pattern string, toss escaped characters.
112 * Only toss an escaped character if it escapes a delimiter.
114 for (ptrn = t = p;;) {
115 if (p[0] == '\0' || p[0] == delim) {
120 * Nul terminate the pattern string -- it's passed
121 * to regcomp which doesn't understand anything else.
129 else if (p[1] == '\\')
134 /* If the pattern string is empty, use the last one. */
136 if (sp->re == NULL) {
137 ex_emsg(sp, NULL, EXM_NOPREVRE);
141 /* Re-compile the RE if necessary. */
142 if (!F_ISSET(sp, SC_RE_SEARCH) && re_compile(sp,
143 sp->re, sp->re_len, NULL, NULL, &sp->re_c, RE_C_SEARCH))
146 /* Compile the RE. */
147 if (re_compile(sp, ptrn, t - ptrn,
148 &sp->re, &sp->re_len, &sp->re_c, RE_C_SEARCH))
152 * Set saved RE. Historic practice is that globals set
153 * direction as well as the RE.
155 sp->searchdir = FORWARD;
159 /* The global commands always set the previous context mark. */
162 if (mark_set(sp, ABSMARK1, &abs, 1))
165 /* Get an EXCMD structure. */
166 CALLOC_RET(sp, ecp, EXCMD *, 1, sizeof(EXCMD));
167 CIRCLEQ_INIT(&ecp->rq);
170 * Get a copy of the command string; the default command is print.
171 * Don't worry about a set of <blank>s with no command, that will
172 * default to print in the ex parser. We need to have two copies
173 * because the ex parser may step on the command string when it's
176 if ((len = cmdp->argv[0]->len - (p - cmdp->argv[0]->bp)) == 0) {
181 MALLOC_RET(sp, ecp->cp, char *, len * 2);
184 memcpy(ecp->cp + len, p, len);
185 ecp->range_lno = OOBLNO;
186 FL_SET(ecp->agv_flags, cmd == GLOBAL ? AGV_GLOBAL : AGV_V);
187 LIST_INSERT_HEAD(&sp->gp->ecq, ecp, q);
190 * For each line... The semantics of global matching are that we first
191 * have to decide which lines are going to get passed to the command,
192 * and then pass them to the command, ignoring other changes. There's
193 * really no way to do this in a single pass, since arbitrary line
194 * creation, deletion and movement can be done in the ex command. For
195 * example, a good vi clone test is ":g/X/mo.-3", or "g/X/.,.+1d".
196 * What we do is create linked list of lines that are tracked through
197 * each ex command. There's a callback routine which the DB interface
198 * routines call when a line is created or deleted. This doesn't help
202 cnt = INTERRUPT_CHECK;
203 for (start = cmdp->addr1.lno,
204 end = cmdp->addr2.lno; start <= end; ++start) {
206 if (INTERRUPTED(sp)) {
212 search_busy(sp, btype);
214 cnt = INTERRUPT_CHECK;
216 if (db_get(sp, start, DBG_FATAL, &dbp, &len))
219 match[0].rm_eo = len;
221 regexec(&sp->re_c, dbp, 0, match, REG_STARTEND)) {
231 re_error(sp, eval, &sp->re_c);
235 /* If follows the last entry, extend the last entry's range. */
236 if ((rp = ecp->rq.cqh_last) != (void *)&ecp->rq &&
237 rp->stop == start - 1) {
242 /* Allocate a new range, and append it to the list. */
243 CALLOC(sp, rp, RANGE *, 1, sizeof(RANGE));
246 rp->start = rp->stop = start;
247 CIRCLEQ_INSERT_TAIL(&ecp->rq, rp, q);
249 search_busy(sp, BUSY_OFF);
255 * Update the ranges based on an insertion or deletion.
257 * PUBLIC: int ex_g_insdel __P((SCR *, lnop_t, recno_t));
260 ex_g_insdel(sp, op, lno)
268 /* All insert/append operations are done as inserts. */
269 if (op == LINE_APPEND)
272 if (op == LINE_RESET)
275 for (ecp = sp->gp->ecq.lh_first; ecp != NULL; ecp = ecp->q.le_next) {
276 if (!FL_ISSET(ecp->agv_flags, AGV_AT | AGV_GLOBAL | AGV_V))
278 for (rp = ecp->rq.cqh_first; rp != (void *)&ecp->rq; rp = nrp) {
279 nrp = rp->q.cqe_next;
281 /* If range less than the line, ignore it. */
286 * If range greater than the line, decrement or
287 * increment the range.
289 if (rp->start > lno) {
290 if (op == LINE_DELETE) {
301 * Lno is inside the range, decrement the end point
302 * for deletion, and split the range for insertion.
303 * In the latter case, since we're inserting a new
304 * element, neither range can be exhausted.
306 if (op == LINE_DELETE) {
307 if (rp->start > --rp->stop) {
308 CIRCLEQ_REMOVE(&ecp->rq, rp, q);
312 CALLOC_RET(sp, nrp, RANGE *, 1, sizeof(RANGE));
313 nrp->start = lno + 1;
314 nrp->stop = rp->stop + 1;
316 CIRCLEQ_INSERT_AFTER(&ecp->rq, rp, nrp, q);
322 * If the command deleted/inserted lines, the cursor moves to
323 * the line after the deleted/inserted line.
325 ecp->range_lno = lno;