1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
|
/* glob.c: This file contains the global command routines for the ed line
editor */
/*-
* Copyright (c) 1993 Andrew Moore, Talke Studio.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/types.h>
#include <sys/ioctl.h>
#include <sys/wait.h>
#include "ed.h"
/* build_active_list: add line matching a pattern to the global-active list */
int
build_active_list(int isgcmd)
{
pattern_t *pat;
line_t *lp;
long n;
char *s;
char delimiter;
if ((delimiter = *ibufp) == ' ' || delimiter == '\n') {
errmsg = "invalid pattern delimiter";
return ERR;
} else if ((pat = get_compiled_pattern()) == NULL)
return ERR;
else if (*ibufp == delimiter)
ibufp++;
clear_active_list();
lp = get_addressed_line_node(first_addr);
for (n = first_addr; n <= second_addr; n++, lp = lp->q_forw) {
if ((s = get_sbuf_line(lp)) == NULL)
return ERR;
if (isbinary)
NUL_TO_NEWLINE(s, lp->len);
if (!(regexec(pat, s, 0, NULL, 0) == isgcmd) &&
set_active_node(lp) < 0)
return ERR;
}
return 0;
}
/* exec_global: apply command list in the command buffer to the active
lines in a range; return command status */
long
exec_global(int interact, int gflag)
{
static char *ocmd = NULL;
static int ocmdsz = 0;
line_t *lp = NULL;
int status;
int n;
char *cmd = NULL;
#ifdef BACKWARDS
if (!interact)
if (!strcmp(ibufp, "\n"))
cmd = "p\n"; /* null cmd-list == `p' */
else if ((cmd = get_extended_line(&n, 0)) == NULL)
return ERR;
#else
if (!interact && (cmd = get_extended_line(&n, 0)) == NULL)
return ERR;
#endif
clear_undo_stack();
while ((lp = next_active_node()) != NULL) {
if ((current_addr = get_line_node_addr(lp)) < 0)
return ERR;
if (interact) {
/* print current_addr; get a command in global syntax */
if (display_lines(current_addr, current_addr, gflag) < 0)
return ERR;
while ((n = get_tty_line()) > 0 &&
ibuf[n - 1] != '\n')
clearerr(stdin);
if (n < 0)
return ERR;
else if (n == 0) {
errmsg = "unexpected end-of-file";
return ERR;
} else if (n == 1 && !strcmp(ibuf, "\n"))
continue;
else if (n == 2 && !strcmp(ibuf, "&\n")) {
if (cmd == NULL) {
errmsg = "no previous command";
return ERR;
} else cmd = ocmd;
} else if ((cmd = get_extended_line(&n, 0)) == NULL)
return ERR;
else {
REALLOC(ocmd, ocmdsz, n + 1, ERR);
memcpy(ocmd, cmd, n + 1);
cmd = ocmd;
}
}
ibufp = cmd;
for (; *ibufp;)
if ((status = extract_addr_range()) < 0 ||
(status = exec_command()) < 0 ||
(status > 0 && (status = display_lines(
current_addr, current_addr, status)) < 0))
return status;
}
return 0;
}
static line_t **active_list; /* list of lines active in a global command */
static long active_last; /* index of last active line in active_list */
static long active_size; /* size of active_list */
static long active_ptr; /* active_list index (non-decreasing) */
static long active_ndx; /* active_list index (modulo active_last) */
/* set_active_node: add a line node to the global-active list */
int
set_active_node(line_t *lp)
{
if (active_last + 1 > active_size) {
int ti = active_size;
line_t **ts;
SPL1();
#if defined(sun) || defined(NO_REALLOC_NULL)
if (active_list != NULL) {
#endif
if ((ts = (line_t **) realloc(active_list,
(ti += MINBUFSZ) * sizeof(line_t *))) == NULL) {
fprintf(stderr, "%s\n", strerror(errno));
errmsg = "out of memory";
SPL0();
return ERR;
}
#if defined(sun) || defined(NO_REALLOC_NULL)
} else {
if ((ts = (line_t **) malloc((ti += MINBUFSZ) *
sizeof(line_t **))) == NULL) {
fprintf(stderr, "%s\n", strerror(errno));
errmsg = "out of memory";
SPL0();
return ERR;
}
}
#endif
active_size = ti;
active_list = ts;
SPL0();
}
active_list[active_last++] = lp;
return 0;
}
/* unset_active_nodes: remove a range of lines from the global-active list */
void
unset_active_nodes(line_t *np, line_t *mp)
{
line_t *lp;
long i;
for (lp = np; lp != mp; lp = lp->q_forw)
for (i = 0; i < active_last; i++)
if (active_list[active_ndx] == lp) {
active_list[active_ndx] = NULL;
active_ndx = INC_MOD(active_ndx, active_last - 1);
break;
} else active_ndx = INC_MOD(active_ndx, active_last - 1);
}
/* next_active_node: return the next global-active line node */
line_t *
next_active_node(void)
{
while (active_ptr < active_last && active_list[active_ptr] == NULL)
active_ptr++;
return (active_ptr < active_last) ? active_list[active_ptr++] : NULL;
}
/* clear_active_list: clear the global-active list */
void
clear_active_list(void)
{
SPL1();
active_size = active_last = active_ptr = active_ndx = 0;
free(active_list);
active_list = NULL;
SPL0();
}
|
