1: /* $OpenBSD$ */
2:
3: /*
4: * Copyright (c) 2009 Jonathan Alvarado <radobobo@users.sourceforge.net>
5: *
6: * Permission to use, copy, modify, and distribute this software for any
7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
9: *
10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14: * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
15: * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
16: * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17: */
18:
19: #include <sys/types.h>
20:
21: #include <stdlib.h>
22: #include <string.h>
23:
24: #include "tmux.h"
25:
26: /*
27: * Write the entire contents of a pane to a buffer or stdout.
28: */
29:
30: static enum cmd_retval cmd_capture_pane_exec(struct cmd *, struct cmdq_item *);
31:
32: static char *cmd_capture_pane_append(char *, size_t *, char *, size_t);
33: static char *cmd_capture_pane_pending(struct args *, struct window_pane *,
34: size_t *);
35: static char *cmd_capture_pane_history(struct args *, struct cmdq_item *,
36: struct window_pane *, size_t *);
37:
38: const struct cmd_entry cmd_capture_pane_entry = {
39: .name = "capture-pane",
40: .alias = "capturep",
41:
42: .args = { "ab:CeE:JpPqS:t:", 0, 0 },
43: .usage = "[-aCeJpPq] " CMD_BUFFER_USAGE " [-E end-line] "
44: "[-S start-line]" CMD_TARGET_PANE_USAGE,
45:
46: .tflag = CMD_PANE,
47:
48: .flags = CMD_AFTERHOOK,
49: .exec = cmd_capture_pane_exec
50: };
51:
52: const struct cmd_entry cmd_clear_history_entry = {
53: .name = "clear-history",
54: .alias = "clearhist",
55:
56: .args = { "t:", 0, 0 },
57: .usage = CMD_TARGET_PANE_USAGE,
58:
59: .tflag = CMD_PANE,
60:
61: .flags = CMD_AFTERHOOK,
62: .exec = cmd_capture_pane_exec
63: };
64:
65: static char *
66: cmd_capture_pane_append(char *buf, size_t *len, char *line, size_t linelen)
67: {
68: buf = xrealloc(buf, *len + linelen + 1);
69: memcpy(buf + *len, line, linelen);
70: *len += linelen;
71: return (buf);
72: }
73:
74: static char *
75: cmd_capture_pane_pending(struct args *args, struct window_pane *wp,
76: size_t *len)
77: {
78: struct evbuffer *pending;
79: char *buf, *line, tmp[5];
80: size_t linelen;
81: u_int i;
82:
83: pending = input_pending(wp);
84: if (pending == NULL)
85: return (xstrdup(""));
86:
87: line = EVBUFFER_DATA(pending);
88: linelen = EVBUFFER_LENGTH(pending);
89:
90: buf = xstrdup("");
91: if (args_has(args, 'C')) {
92: for (i = 0; i < linelen; i++) {
93: if (line[i] >= ' ' && line[i] != '\\') {
94: tmp[0] = line[i];
95: tmp[1] = '\0';
96: } else
97: xsnprintf(tmp, sizeof tmp, "\\%03hho", line[i]);
98: buf = cmd_capture_pane_append(buf, len, tmp,
99: strlen(tmp));
100: }
101: } else
102: buf = cmd_capture_pane_append(buf, len, line, linelen);
103: return (buf);
104: }
105:
106: static char *
107: cmd_capture_pane_history(struct args *args, struct cmdq_item *item,
108: struct window_pane *wp, size_t *len)
109: {
110: struct grid *gd;
111: const struct grid_line *gl;
112: struct grid_cell *gc = NULL;
113: int n, with_codes, escape_c0, join_lines;
114: u_int i, sx, top, bottom, tmp;
115: char *cause, *buf, *line;
116: const char *Sflag, *Eflag;
117: size_t linelen;
118:
119: sx = screen_size_x(&wp->base);
120: if (args_has(args, 'a')) {
121: gd = wp->saved_grid;
122: if (gd == NULL) {
123: if (!args_has(args, 'q')) {
124: cmdq_error(item, "no alternate screen");
125: return (NULL);
126: }
127: return (xstrdup(""));
128: }
129: } else
130: gd = wp->base.grid;
131:
132: Sflag = args_get(args, 'S');
133: if (Sflag != NULL && strcmp(Sflag, "-") == 0)
134: top = 0;
135: else {
136: n = args_strtonum(args, 'S', INT_MIN, SHRT_MAX, &cause);
137: if (cause != NULL) {
138: top = gd->hsize;
139: free(cause);
140: } else if (n < 0 && (u_int) -n > gd->hsize)
141: top = 0;
142: else
143: top = gd->hsize + n;
144: if (top > gd->hsize + gd->sy - 1)
145: top = gd->hsize + gd->sy - 1;
146: }
147:
148: Eflag = args_get(args, 'E');
149: if (Eflag != NULL && strcmp(Eflag, "-") == 0)
150: bottom = gd->hsize + gd->sy - 1;
151: else {
152: n = args_strtonum(args, 'E', INT_MIN, SHRT_MAX, &cause);
153: if (cause != NULL) {
154: bottom = gd->hsize + gd->sy - 1;
155: free(cause);
156: } else if (n < 0 && (u_int) -n > gd->hsize)
157: bottom = 0;
158: else
159: bottom = gd->hsize + n;
160: if (bottom > gd->hsize + gd->sy - 1)
161: bottom = gd->hsize + gd->sy - 1;
162: }
163:
164: if (bottom < top) {
165: tmp = bottom;
166: bottom = top;
167: top = tmp;
168: }
169:
170: with_codes = args_has(args, 'e');
171: escape_c0 = args_has(args, 'C');
172: join_lines = args_has(args, 'J');
173:
174: buf = NULL;
175: for (i = top; i <= bottom; i++) {
176: line = grid_string_cells(gd, 0, i, sx, &gc, with_codes,
177: escape_c0, !join_lines);
178: linelen = strlen(line);
179:
180: buf = cmd_capture_pane_append(buf, len, line, linelen);
181:
182: gl = grid_peek_line(gd, i);
183: if (!join_lines || !(gl->flags & GRID_LINE_WRAPPED))
184: buf[(*len)++] = '\n';
185:
186: free(line);
187: }
188: return (buf);
189: }
190:
191: static enum cmd_retval
192: cmd_capture_pane_exec(struct cmd *self, struct cmdq_item *item)
193: {
194: struct args *args = self->args;
195: struct client *c;
196: struct window_pane *wp = item->state.tflag.wp;
197: char *buf, *cause;
198: const char *bufname;
199: size_t len;
200:
201: if (self->entry == &cmd_clear_history_entry) {
202: if (wp->mode == &window_copy_mode)
203: window_pane_reset_mode(wp);
204: grid_clear_history(wp->base.grid);
205: return (CMD_RETURN_NORMAL);
206: }
207:
208: len = 0;
209: if (args_has(args, 'P'))
210: buf = cmd_capture_pane_pending(args, wp, &len);
211: else
212: buf = cmd_capture_pane_history(args, item, wp, &len);
213: if (buf == NULL)
214: return (CMD_RETURN_ERROR);
215:
216: if (args_has(args, 'p')) {
217: c = item->client;
218: if (c == NULL ||
219: (c->session != NULL && !(c->flags & CLIENT_CONTROL))) {
220: cmdq_error(item, "can't write to stdout");
221: free(buf);
222: return (CMD_RETURN_ERROR);
223: }
224: evbuffer_add(c->stdout_data, buf, len);
225: free(buf);
226: if (args_has(args, 'P') && len > 0)
227: evbuffer_add(c->stdout_data, "\n", 1);
228: server_client_push_stdout(c);
229: } else {
230: bufname = NULL;
231: if (args_has(args, 'b'))
232: bufname = args_get(args, 'b');
233:
234: if (paste_set(buf, len, bufname, &cause) != 0) {
235: cmdq_error(item, "%s", cause);
236: free(cause);
237: free(buf);
238: return (CMD_RETURN_ERROR);
239: }
240: }
241:
242: return (CMD_RETURN_NORMAL);
243: }
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