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/* $OpenBSD: cmd-capture-pane.c,v 1.47 2019/03/14 06:36:21 nicm Exp $ */
/*
* 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.
*/
static enum cmd_retval cmd_capture_pane_exec(struct cmd *, struct cmdq_item *);
static char *cmd_capture_pane_append(char *, size_t *, char *, size_t);
static char *cmd_capture_pane_pending(struct args *, struct window_pane *,
size_t *);
static char *cmd_capture_pane_history(struct args *, struct cmdq_item *,
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,
.target = { 't', CMD_FIND_PANE, 0 },
.flags = CMD_AFTERHOOK,
.exec = cmd_capture_pane_exec
};
const struct cmd_entry cmd_clear_history_entry = {
.name = "clear-history",
.alias = "clearhist",
.args = { "t:", 0, 0 },
.usage = CMD_TARGET_PANE_USAGE,
.target = { 't', CMD_FIND_PANE, 0 },
.flags = CMD_AFTERHOOK,
.exec = cmd_capture_pane_exec
};
static 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);
}
static 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] >= ' ' && 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);
}
static char *
cmd_capture_pane_history(struct args *args, struct cmdq_item *item,
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(item, "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);
}
static enum cmd_retval
cmd_capture_pane_exec(struct cmd *self, struct cmdq_item *item)
{
struct args *args = self->args;
struct client *c;
struct window_pane *wp = item->target.wp;
char *buf, *cause;
const char *bufname;
size_t len;
if (self->entry == &cmd_clear_history_entry) {
window_pane_reset_mode_all(wp);
grid_clear_history(wp->base.grid);
return (CMD_RETURN_NORMAL);
}
len = 0;
if (args_has(args, 'P'))
buf = cmd_capture_pane_pending(args, wp, &len);
else
buf = cmd_capture_pane_history(args, item, wp, &len);
if (buf == NULL)
return (CMD_RETURN_ERROR);
if (args_has(args, 'p')) {
c = item->client;
if (c == NULL ||
(c->session != NULL && !(c->flags & CLIENT_CONTROL))) {
cmdq_error(item, "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(item, "%s", cause);
free(cause);
free(buf);
return (CMD_RETURN_ERROR);
}
}
return (CMD_RETURN_NORMAL);
}
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