mirror of https://github.com/tmux/tmux.git
155 lines
3.6 KiB
C
155 lines
3.6 KiB
C
/* $OpenBSD$ */
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/*
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* Copyright (c) 2009 Tiago Cunha <me@tiagocunha.org>
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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 <sys/stat.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include "tmux.h"
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/*
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* Saves a paste buffer to a file.
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*/
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static enum cmd_retval cmd_save_buffer_exec(struct cmd *, struct cmdq_item *);
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const struct cmd_entry cmd_save_buffer_entry = {
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.name = "save-buffer",
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.alias = "saveb",
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.args = { "ab:", 1, 1 },
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.usage = "[-a] " CMD_BUFFER_USAGE " path",
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.flags = CMD_AFTERHOOK,
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.exec = cmd_save_buffer_exec
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};
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const struct cmd_entry cmd_show_buffer_entry = {
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.name = "show-buffer",
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.alias = "showb",
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.args = { "b:", 0, 0 },
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.usage = CMD_BUFFER_USAGE,
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.flags = CMD_AFTERHOOK,
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.exec = cmd_save_buffer_exec
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};
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static enum cmd_retval
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cmd_save_buffer_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 paste_buffer *pb;
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const char *path, *bufname, *bufdata, *start, *end;
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const char *flags;
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char *msg, *file;
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size_t size, used, msglen, bufsize;
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FILE *f;
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if (!args_has(args, 'b')) {
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if ((pb = paste_get_top(NULL)) == NULL) {
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cmdq_error(item, "no buffers");
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return (CMD_RETURN_ERROR);
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}
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} else {
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bufname = args_get(args, 'b');
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pb = paste_get_name(bufname);
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if (pb == NULL) {
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cmdq_error(item, "no buffer %s", bufname);
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return (CMD_RETURN_ERROR);
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}
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}
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bufdata = paste_buffer_data(pb, &bufsize);
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if (self->entry == &cmd_show_buffer_entry)
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path = "-";
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else
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path = args->argv[0];
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if (strcmp(path, "-") == 0) {
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if (c == NULL) {
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cmdq_error(item, "can't write to stdout");
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return (CMD_RETURN_ERROR);
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}
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if (c->session == NULL || (c->flags & CLIENT_CONTROL))
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goto do_stdout;
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goto do_print;
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}
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flags = "wb";
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if (args_has(self->args, 'a'))
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flags = "ab";
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file = server_client_get_path(c, path);
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f = fopen(file, flags);
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if (f == NULL) {
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cmdq_error(item, "%s: %s", file, strerror(errno));
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free(file);
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return (CMD_RETURN_ERROR);
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}
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if (fwrite(bufdata, 1, bufsize, f) != bufsize) {
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cmdq_error(item, "%s: write error", file);
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fclose(f);
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return (CMD_RETURN_ERROR);
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}
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fclose(f);
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free(file);
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return (CMD_RETURN_NORMAL);
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do_stdout:
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evbuffer_add(c->stdout_data, bufdata, bufsize);
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server_client_push_stdout(c);
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return (CMD_RETURN_NORMAL);
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do_print:
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if (bufsize > (INT_MAX / 4) - 1) {
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cmdq_error(item, "buffer too big");
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return (CMD_RETURN_ERROR);
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}
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msg = NULL;
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used = 0;
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while (used != bufsize) {
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start = bufdata + used;
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end = memchr(start, '\n', bufsize - used);
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if (end != NULL)
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size = end - start;
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else
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size = bufsize - used;
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msglen = size * 4 + 1;
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msg = xrealloc(msg, msglen);
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strvisx(msg, start, size, VIS_OCTAL|VIS_TAB);
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cmdq_print(item, "%s", msg);
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used += size + (end != NULL);
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}
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free(msg);
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return (CMD_RETURN_NORMAL);
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}
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