GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: usr.bin/tmux/cmd-capture-pane.c Lines: 0 107 0.0 %
Date: 2017-11-13 Branches: 0 70 0.0 %

Line Branch Exec Source
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/* $OpenBSD: cmd-capture-pane.c,v 1.44 2017/04/22 10:22:39 nicm Exp $ */
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/*
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 * Copyright (c) 2009 Jonathan Alvarado <radobobo@users.sourceforge.net>
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 *
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 * Permission to use, copy, modify, and distribute this software for any
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 * purpose with or without fee is hereby granted, provided that the above
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 * copyright notice and this permission notice appear in all copies.
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 *
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 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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 * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
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 * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
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 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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 */
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#include <sys/types.h>
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#include <stdlib.h>
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#include <string.h>
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#include "tmux.h"
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/*
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 * Write the entire contents of a pane to a buffer or stdout.
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 */
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static enum cmd_retval	cmd_capture_pane_exec(struct cmd *, struct cmdq_item *);
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static char	*cmd_capture_pane_append(char *, size_t *, char *, size_t);
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static char	*cmd_capture_pane_pending(struct args *, struct window_pane *,
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		     size_t *);
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static char	*cmd_capture_pane_history(struct args *, struct cmdq_item *,
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		     struct window_pane *, size_t *);
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const struct cmd_entry cmd_capture_pane_entry = {
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	.name = "capture-pane",
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	.alias = "capturep",
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	.args = { "ab:CeE:JpPqS:t:", 0, 0 },
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	.usage = "[-aCeJpPq] " CMD_BUFFER_USAGE " [-E end-line] "
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		 "[-S start-line]" CMD_TARGET_PANE_USAGE,
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	.target = { 't', CMD_FIND_PANE, 0 },
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	.flags = CMD_AFTERHOOK,
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	.exec = cmd_capture_pane_exec
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};
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const struct cmd_entry cmd_clear_history_entry = {
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	.name = "clear-history",
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	.alias = "clearhist",
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	.args = { "t:", 0, 0 },
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	.usage = CMD_TARGET_PANE_USAGE,
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	.target = { 't', CMD_FIND_PANE, 0 },
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	.flags = CMD_AFTERHOOK,
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	.exec = cmd_capture_pane_exec
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};
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static char *
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cmd_capture_pane_append(char *buf, size_t *len, char *line, size_t linelen)
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{
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	buf = xrealloc(buf, *len + linelen + 1);
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	memcpy(buf + *len, line, linelen);
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	*len += linelen;
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	return (buf);
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}
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static char *
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cmd_capture_pane_pending(struct args *args, struct window_pane *wp,
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    size_t *len)
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{
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	struct evbuffer	*pending;
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	char		*buf, *line, tmp[5];
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	size_t		 linelen;
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	u_int		 i;
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	pending = input_pending(wp);
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	if (pending == NULL)
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		return (xstrdup(""));
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	line = EVBUFFER_DATA(pending);
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	linelen = EVBUFFER_LENGTH(pending);
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	buf = xstrdup("");
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	if (args_has(args, 'C')) {
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		for (i = 0; i < linelen; i++) {
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			if (line[i] >= ' ' && line[i] != '\\') {
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				tmp[0] = line[i];
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				tmp[1] = '\0';
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			} else
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				xsnprintf(tmp, sizeof tmp, "\\%03hho", line[i]);
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			buf = cmd_capture_pane_append(buf, len, tmp,
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			    strlen(tmp));
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		}
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	} else
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		buf = cmd_capture_pane_append(buf, len, line, linelen);
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	return (buf);
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}
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static char *
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cmd_capture_pane_history(struct args *args, struct cmdq_item *item,
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    struct window_pane *wp, size_t *len)
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{
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	struct grid		*gd;
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	const struct grid_line	*gl;
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	struct grid_cell	*gc = NULL;
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	int			 n, with_codes, escape_c0, join_lines;
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	u_int			 i, sx, top, bottom, tmp;
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	char			*cause, *buf, *line;
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	const char		*Sflag, *Eflag;
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	size_t			 linelen;
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	sx = screen_size_x(&wp->base);
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	if (args_has(args, 'a')) {
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		gd = wp->saved_grid;
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		if (gd == NULL) {
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			if (!args_has(args, 'q')) {
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				cmdq_error(item, "no alternate screen");
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				return (NULL);
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			}
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			return (xstrdup(""));
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		}
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	} else
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		gd = wp->base.grid;
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	Sflag = args_get(args, 'S');
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	if (Sflag != NULL && strcmp(Sflag, "-") == 0)
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		top = 0;
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	else {
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		n = args_strtonum(args, 'S', INT_MIN, SHRT_MAX, &cause);
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		if (cause != NULL) {
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			top = gd->hsize;
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			free(cause);
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		} else if (n < 0 && (u_int) -n > gd->hsize)
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			top = 0;
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		else
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			top = gd->hsize + n;
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		if (top > gd->hsize + gd->sy - 1)
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			top = gd->hsize + gd->sy - 1;
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	}
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	Eflag = args_get(args, 'E');
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	if (Eflag != NULL && strcmp(Eflag, "-") == 0)
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		bottom = gd->hsize + gd->sy - 1;
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	else {
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		n = args_strtonum(args, 'E', INT_MIN, SHRT_MAX, &cause);
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		if (cause != NULL) {
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			bottom = gd->hsize + gd->sy - 1;
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			free(cause);
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		} else if (n < 0 && (u_int) -n > gd->hsize)
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			bottom = 0;
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		else
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			bottom = gd->hsize + n;
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		if (bottom > gd->hsize + gd->sy - 1)
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			bottom = gd->hsize + gd->sy - 1;
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	}
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	if (bottom < top) {
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		tmp = bottom;
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		bottom = top;
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		top = tmp;
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	}
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	with_codes = args_has(args, 'e');
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	escape_c0 = args_has(args, 'C');
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	join_lines = args_has(args, 'J');
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	buf = NULL;
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	for (i = top; i <= bottom; i++) {
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		line = grid_string_cells(gd, 0, i, sx, &gc, with_codes,
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		    escape_c0, !join_lines);
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		linelen = strlen(line);
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		buf = cmd_capture_pane_append(buf, len, line, linelen);
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		gl = grid_peek_line(gd, i);
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		if (!join_lines || !(gl->flags & GRID_LINE_WRAPPED))
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			buf[(*len)++] = '\n';
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		free(line);
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	}
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	return (buf);
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}
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static enum cmd_retval
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cmd_capture_pane_exec(struct cmd *self, struct cmdq_item *item)
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{
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	struct args		*args = self->args;
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	struct client		*c;
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	struct window_pane	*wp = item->target.wp;
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	char			*buf, *cause;
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	const char		*bufname;
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	size_t			 len;
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	if (self->entry == &cmd_clear_history_entry) {
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		if (wp->mode == &window_copy_mode)
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			window_pane_reset_mode(wp);
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		grid_clear_history(wp->base.grid);
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		return (CMD_RETURN_NORMAL);
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	}
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	len = 0;
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	if (args_has(args, 'P'))
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		buf = cmd_capture_pane_pending(args, wp, &len);
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	else
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		buf = cmd_capture_pane_history(args, item, wp, &len);
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	if (buf == NULL)
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		return (CMD_RETURN_ERROR);
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	if (args_has(args, 'p')) {
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		c = item->client;
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		if (c == NULL ||
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		    (c->session != NULL && !(c->flags & CLIENT_CONTROL))) {
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			cmdq_error(item, "can't write to stdout");
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			free(buf);
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			return (CMD_RETURN_ERROR);
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		}
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		evbuffer_add(c->stdout_data, buf, len);
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		free(buf);
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		if (args_has(args, 'P') && len > 0)
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		    evbuffer_add(c->stdout_data, "\n", 1);
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		server_client_push_stdout(c);
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	} else {
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		bufname = NULL;
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		if (args_has(args, 'b'))
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			bufname = args_get(args, 'b');
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		if (paste_set(buf, len, bufname, &cause) != 0) {
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			cmdq_error(item, "%s", cause);
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			free(cause);
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			free(buf);
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			return (CMD_RETURN_ERROR);
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		}
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	}
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	return (CMD_RETURN_NORMAL);
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}