1 /* glob.c: This file contains the global command routines for the ed line
4 * Copyright (c) 1993 Andrew Moore, Talke Studio.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * @(#)glob.c,v 1.1 1994/02/01 00:34:40 alm Exp
29 * $FreeBSD: src/bin/ed/glbl.c,v 1.9.2.1 2001/01/23 14:38:31 asmodai Exp $
30 * $DragonFly: src/bin/ed/glbl.c,v 1.2 2003/06/17 04:22:49 dillon Exp $
33 #include <sys/types.h>
35 #include <sys/ioctl.h>
41 /* build_active_list: add line matching a pattern to the global-active list */
43 build_active_list(isgcmd)
52 if ((delimiter = *ibufp) == ' ' || delimiter == '\n') {
53 sprintf(errmsg, "invalid pattern delimiter");
55 } else if ((pat = get_compiled_pattern()) == NULL)
57 else if (*ibufp == delimiter)
60 lp = get_addressed_line_node(first_addr);
61 for (n = first_addr; n <= second_addr; n++, lp = lp->q_forw) {
62 if ((s = get_sbuf_line(lp)) == NULL)
65 NUL_TO_NEWLINE(s, lp->len);
66 if (!regexec(pat, s, 0, NULL, 0) == isgcmd &&
67 set_active_node(lp) < 0)
74 /* exec_global: apply command list in the command buffer to the active
75 lines in a range; return command status */
77 exec_global(interact, gflag)
81 static char *ocmd = NULL;
82 static int ocmdsz = 0;
91 if (!strcmp(ibufp, "\n"))
92 cmd = "p\n"; /* null cmd-list == `p' */
93 else if ((cmd = get_extended_line(&n, 0)) == NULL)
96 if (!interact && (cmd = get_extended_line(&n, 0)) == NULL)
100 while ((lp = next_active_node()) != NULL) {
101 if ((current_addr = get_line_node_addr(lp)) < 0)
104 /* print current_addr; get a command in global syntax */
105 if (display_lines(current_addr, current_addr, gflag) < 0)
107 while ((n = get_tty_line()) > 0 &&
113 sprintf(errmsg, "unexpected end-of-file");
115 } else if (n == 1 && !strcmp(ibuf, "\n"))
117 else if (n == 2 && !strcmp(ibuf, "&\n")) {
119 sprintf(errmsg, "no previous command");
122 } else if ((cmd = get_extended_line(&n, 0)) == NULL)
125 REALLOC(ocmd, ocmdsz, n + 1, ERR);
126 memcpy(ocmd, cmd, n + 1);
133 if ((status = extract_addr_range()) < 0 ||
134 (status = exec_command()) < 0 ||
135 (status > 0 && (status = display_lines(
136 current_addr, current_addr, status)) < 0))
143 line_t **active_list; /* list of lines active in a global command */
144 long active_last; /* index of last active line in active_list */
145 long active_size; /* size of active_list */
146 long active_ptr; /* active_list index (non-decreasing) */
147 long active_ndx; /* active_list index (modulo active_last) */
149 /* set_active_node: add a line node to the global-active list */
154 if (active_last + 1 > active_size) {
155 int ti = active_size;
158 #if defined(sun) || defined(NO_REALLOC_NULL)
159 if (active_list != NULL) {
161 if ((ts = (line_t **) realloc(active_list,
162 (ti += MINBUFSZ) * sizeof(line_t **))) == NULL) {
163 fprintf(stderr, "%s\n", strerror(errno));
164 sprintf(errmsg, "out of memory");
168 #if defined(sun) || defined(NO_REALLOC_NULL)
170 if ((ts = (line_t **) malloc((ti += MINBUFSZ) *
171 sizeof(line_t **))) == NULL) {
172 fprintf(stderr, "%s\n", strerror(errno));
173 sprintf(errmsg, "out of memory");
183 active_list[active_last++] = lp;
188 /* unset_active_nodes: remove a range of lines from the global-active list */
190 unset_active_nodes(np, mp)
196 for (lp = np; lp != mp; lp = lp->q_forw)
197 for (i = 0; i < active_last; i++)
198 if (active_list[active_ndx] == lp) {
199 active_list[active_ndx] = NULL;
200 active_ndx = INC_MOD(active_ndx, active_last - 1);
202 } else active_ndx = INC_MOD(active_ndx, active_last - 1);
206 /* next_active_node: return the next global-active line node */
210 while (active_ptr < active_last && active_list[active_ptr] == NULL)
212 return (active_ptr < active_last) ? active_list[active_ptr++] : NULL;
216 /* clear_active_list: clear the global-active list */
221 active_size = active_last = active_ptr = active_ndx = 0;