File: cmd-capture-pane.c

package info (click to toggle)
tmate 2.4.0-2
  • links: PTS, VCS
  • area: main
  • in suites: bullseye, sid
  • size: 2,560 kB
  • sloc: ansic: 38,233; awk: 339; makefile: 252; sh: 44; perl: 41
file content (223 lines) | stat: -rw-r--r-- 5,587 bytes parent folder | download | duplicates (6)
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
219
220
221
222
223
/* $OpenBSD$ */

/*
 * Copyright (c) 2009 Jonathan Alvarado <radobobo@users.sourceforge.net>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
 * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include <sys/types.h>

#include <stdlib.h>
#include <string.h>

#include "tmux.h"

/*
 * Write the entire contents of a pane to a buffer or stdout.
 */

enum cmd_retval	 cmd_capture_pane_exec(struct cmd *, struct cmd_q *);

char		*cmd_capture_pane_append(char *, size_t *, char *, size_t);
char		*cmd_capture_pane_pending(struct args *, struct window_pane *,
		     size_t *);
char		*cmd_capture_pane_history(struct args *, struct cmd_q *,
		     struct window_pane *, size_t *);

const struct cmd_entry cmd_capture_pane_entry = {
	.name = "capture-pane",
	.alias = "capturep",

	.args = { "ab:CeE:JpPqS:t:", 0, 0 },
	.usage = "[-aCeJpPq] " CMD_BUFFER_USAGE " [-E end-line] "
		 "[-S start-line]" CMD_TARGET_PANE_USAGE,

	.tflag = CMD_PANE,

	.flags = 0,
	.exec = cmd_capture_pane_exec
};

char *
cmd_capture_pane_append(char *buf, size_t *len, char *line, size_t linelen)
{
	buf = xrealloc(buf, *len + linelen + 1);
	memcpy(buf + *len, line, linelen);
	*len += linelen;
	return (buf);
}

char *
cmd_capture_pane_pending(struct args *args, struct window_pane *wp,
    size_t *len)
{
	struct evbuffer	*pending;
	char		*buf, *line, tmp[5];
	size_t		 linelen;
	u_int		 i;

	pending = input_pending(wp);
	if (pending == NULL)
		return (xstrdup(""));

	line = EVBUFFER_DATA(pending);
	linelen = EVBUFFER_LENGTH(pending);

	buf = xstrdup("");
	if (args_has(args, 'C')) {
		for (i = 0; i < linelen; i++) {
			if (line[i] >= ' ') {
				tmp[0] = line[i];
				tmp[1] = '\0';
			} else
				xsnprintf(tmp, sizeof tmp, "\\%03hho", line[i]);
			buf = cmd_capture_pane_append(buf, len, tmp,
			    strlen(tmp));
		}
	} else
		buf = cmd_capture_pane_append(buf, len, line, linelen);
	return (buf);
}

char *
cmd_capture_pane_history(struct args *args, struct cmd_q *cmdq,
    struct window_pane *wp, size_t *len)
{
	struct grid		*gd;
	const struct grid_line	*gl;
	struct grid_cell	*gc = NULL;
	int			 n, with_codes, escape_c0, join_lines;
	u_int			 i, sx, top, bottom, tmp;
	char			*cause, *buf, *line;
	const char		*Sflag, *Eflag;
	size_t			 linelen;

	sx = screen_size_x(&wp->base);
	if (args_has(args, 'a')) {
		gd = wp->saved_grid;
		if (gd == NULL) {
			if (!args_has(args, 'q')) {
				cmdq_error(cmdq, "no alternate screen");
				return (NULL);
			}
			return (xstrdup(""));
		}
	} else
		gd = wp->base.grid;

	Sflag = args_get(args, 'S');
	if (Sflag != NULL && strcmp(Sflag, "-") == 0)
		top = 0;
	else {
		n = args_strtonum(args, 'S', INT_MIN, SHRT_MAX, &cause);
		if (cause != NULL) {
			top = gd->hsize;
			free(cause);
		} else if (n < 0 && (u_int) -n > gd->hsize)
			top = 0;
		else
			top = gd->hsize + n;
		if (top > gd->hsize + gd->sy - 1)
			top = gd->hsize + gd->sy - 1;
	}

	Eflag = args_get(args, 'E');
	if (Eflag != NULL && strcmp(Eflag, "-") == 0)
		bottom = gd->hsize + gd->sy - 1;
	else {
		n = args_strtonum(args, 'E', INT_MIN, SHRT_MAX, &cause);
		if (cause != NULL) {
			bottom = gd->hsize + gd->sy - 1;
			free(cause);
		} else if (n < 0 && (u_int) -n > gd->hsize)
			bottom = 0;
		else
			bottom = gd->hsize + n;
		if (bottom > gd->hsize + gd->sy - 1)
			bottom = gd->hsize + gd->sy - 1;
	}

	if (bottom < top) {
		tmp = bottom;
		bottom = top;
		top = tmp;
	}

	with_codes = args_has(args, 'e');
	escape_c0 = args_has(args, 'C');
	join_lines = args_has(args, 'J');

	buf = NULL;
	for (i = top; i <= bottom; i++) {
		line = grid_string_cells(gd, 0, i, sx, &gc, with_codes,
		    escape_c0, !join_lines);
		linelen = strlen(line);

		buf = cmd_capture_pane_append(buf, len, line, linelen);

		gl = grid_peek_line(gd, i);
		if (!join_lines || !(gl->flags & GRID_LINE_WRAPPED))
			buf[(*len)++] = '\n';

		free(line);
	}
	return (buf);
}

enum cmd_retval
cmd_capture_pane_exec(struct cmd *self, struct cmd_q *cmdq)
{
	struct args		*args = self->args;
	struct client		*c;
	struct window_pane	*wp = cmdq->state.tflag.wp;
	char			*buf, *cause;
	const char		*bufname;
	size_t			 len;

	len = 0;
	if (args_has(args, 'P'))
		buf = cmd_capture_pane_pending(args, wp, &len);
	else
		buf = cmd_capture_pane_history(args, cmdq, wp, &len);
	if (buf == NULL)
		return (CMD_RETURN_ERROR);

	if (args_has(args, 'p')) {
		c = cmdq->client;
		if (c == NULL ||
		    (c->session != NULL && !(c->flags & CLIENT_CONTROL))) {
			cmdq_error(cmdq, "can't write to stdout");
			free(buf);
			return (CMD_RETURN_ERROR);
		}
		evbuffer_add(c->stdout_data, buf, len);
		free(buf);
		if (args_has(args, 'P') && len > 0)
		    evbuffer_add(c->stdout_data, "\n", 1);
		server_client_push_stdout(c);
	} else {
		bufname = NULL;
		if (args_has(args, 'b'))
			bufname = args_get(args, 'b');

		if (paste_set(buf, len, bufname, &cause) != 0) {
			cmdq_error(cmdq, "%s", cause);
			free(cause);
			free(buf);
			return (CMD_RETURN_ERROR);
		}
	}

	return (CMD_RETURN_NORMAL);
}