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c284ebe0ad
not attached, the server process asks it to open the file, similar to how works for stdin, stdout, stderr. This makes special files like /dev/fd/X work (used by some shells). stdin, stdout and stderr and control mode are now just special cases of the same mechanism. This will also make it easier to use for other commands that read files such as source-file.
241 lines
5.9 KiB
C
241 lines
5.9 KiB
C
/* $OpenBSD$ */
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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:JNpPqS:t:", 0, 0 },
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.usage = "[-aCeJNpPq] " 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, no_trim;
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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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no_trim = args_has(args, 'N');
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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 && !no_trim);
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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 = item->client;
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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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window_pane_reset_mode_all(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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if (!file_can_print(c)) {
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cmdq_error(item, "can't write output to client");
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free(buf);
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return (CMD_RETURN_ERROR);
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}
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file_print_buffer(c, buf, len);
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if (args_has(args, 'P') && len > 0)
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file_print(c, "\n");
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free(buf);
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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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}
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