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
29 #include <sys/cdefs.h>
30 #include <sys/types.h>
31 #include <sys/ioctl.h>
37 /* build_active_list: add line matching a pattern to the global-active list */
39 build_active_list(int isgcmd)
47 if ((delimiter = *ibufp) == ' ' || delimiter == '\n') {
48 errmsg = "invalid pattern delimiter";
50 } else if ((pat = get_compiled_pattern()) == NULL)
52 else if (*ibufp == delimiter)
55 lp = get_addressed_line_node(first_addr);
56 for (n = first_addr; n <= second_addr; n++, lp = lp->q_forw) {
57 if ((s = get_sbuf_line(lp)) == NULL)
60 NUL_TO_NEWLINE(s, lp->len);
61 if (!(regexec(pat, s, 0, NULL, 0) == isgcmd) &&
62 set_active_node(lp) < 0)
69 /* exec_global: apply command list in the command buffer to the active
70 lines in a range; return command status */
72 exec_global(int interact, int gflag)
74 static char *ocmd = NULL;
75 static int ocmdsz = 0;
84 if (!strcmp(ibufp, "\n"))
85 cmd = "p\n"; /* null cmd-list == `p' */
86 else if ((cmd = get_extended_line(&n, 0)) == NULL)
89 if (!interact && (cmd = get_extended_line(&n, 0)) == NULL)
93 while ((lp = next_active_node()) != NULL) {
94 if ((current_addr = get_line_node_addr(lp)) < 0)
97 /* print current_addr; get a command in global syntax */
98 if (display_lines(current_addr, current_addr, gflag) < 0)
100 while ((n = get_tty_line()) > 0 &&
106 errmsg = "unexpected end-of-file";
108 } else if (n == 1 && !strcmp(ibuf, "\n"))
110 else if (n == 2 && !strcmp(ibuf, "&\n")) {
112 errmsg = "no previous command";
115 } else if ((cmd = get_extended_line(&n, 0)) == NULL)
118 REALLOC(ocmd, ocmdsz, n + 1, ERR);
119 memcpy(ocmd, cmd, n + 1);
126 if ((status = extract_addr_range()) < 0 ||
127 (status = exec_command()) < 0 ||
128 (status > 0 && (status = display_lines(
129 current_addr, current_addr, status)) < 0))
136 static line_t **active_list; /* list of lines active in a global command */
137 static long active_last; /* index of last active line in active_list */
138 static long active_size; /* size of active_list */
139 static long active_ptr; /* active_list index (non-decreasing) */
140 static long active_ndx; /* active_list index (modulo active_last) */
142 /* set_active_node: add a line node to the global-active list */
144 set_active_node(line_t *lp)
146 if (active_last + 1 > active_size) {
147 size_t ti = active_size;
150 #if defined(sun) || defined(NO_REALLOC_NULL)
151 if (active_list != NULL) {
153 if ((ts = (line_t **) realloc(active_list,
154 (ti += MINBUFSZ) * sizeof(line_t *))) == NULL) {
155 fprintf(stderr, "%s\n", strerror(errno));
156 errmsg = "out of memory";
160 #if defined(sun) || defined(NO_REALLOC_NULL)
162 if ((ts = (line_t **) malloc((ti += MINBUFSZ) *
163 sizeof(line_t **))) == NULL) {
164 fprintf(stderr, "%s\n", strerror(errno));
165 errmsg = "out of memory";
175 active_list[active_last++] = lp;
180 /* unset_active_nodes: remove a range of lines from the global-active list */
182 unset_active_nodes(line_t *np, line_t *mp)
187 for (lp = np; lp != mp; lp = lp->q_forw)
188 for (i = 0; i < active_last; i++)
189 if (active_list[active_ndx] == lp) {
190 active_list[active_ndx] = NULL;
191 active_ndx = INC_MOD(active_ndx, active_last - 1);
193 } else active_ndx = INC_MOD(active_ndx, active_last - 1);
197 /* next_active_node: return the next global-active line node */
199 next_active_node(void)
201 while (active_ptr < active_last && active_list[active_ptr] == NULL)
203 return (active_ptr < active_last) ? active_list[active_ptr++] : NULL;
207 /* clear_active_list: clear the global-active list */
209 clear_active_list(void)
212 active_size = active_last = active_ptr = active_ndx = 0;