1 /* $OpenBSD: cmd-save-buffer.c,v 1.50 2020/04/13 20:51:57 nicm Exp $ */ 2 3 /* 4 * Copyright (c) 2009 Tiago Cunha <me@tiagocunha.org> 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 #include <sys/stat.h> 21 22 #include <errno.h> 23 #include <fcntl.h> 24 #include <stdlib.h> 25 #include <string.h> 26 #include <unistd.h> 27 #include <vis.h> 28 29 #include "tmux.h" 30 31 /* 32 * Saves a paste buffer to a file. 33 */ 34 35 static enum cmd_retval cmd_save_buffer_exec(struct cmd *, struct cmdq_item *); 36 37 const struct cmd_entry cmd_save_buffer_entry = { 38 .name = "save-buffer", 39 .alias = "saveb", 40 41 .args = { "ab:", 1, 1 }, 42 .usage = "[-a] " CMD_BUFFER_USAGE " path", 43 44 .flags = CMD_AFTERHOOK, 45 .exec = cmd_save_buffer_exec 46 }; 47 48 const struct cmd_entry cmd_show_buffer_entry = { 49 .name = "show-buffer", 50 .alias = "showb", 51 52 .args = { "b:", 0, 0 }, 53 .usage = CMD_BUFFER_USAGE, 54 55 .flags = CMD_AFTERHOOK, 56 .exec = cmd_save_buffer_exec 57 }; 58 59 static void 60 cmd_save_buffer_done(__unused struct client *c, const char *path, int error, 61 __unused int closed, __unused struct evbuffer *buffer, void *data) 62 { 63 struct cmdq_item *item = data; 64 65 if (!closed) 66 return; 67 68 if (error != 0) 69 cmdq_error(item, "%s: %s", path, strerror(error)); 70 cmdq_continue(item); 71 } 72 73 static enum cmd_retval 74 cmd_save_buffer_exec(struct cmd *self, struct cmdq_item *item) 75 { 76 struct args *args = cmd_get_args(self); 77 struct paste_buffer *pb; 78 int flags; 79 const char *bufname = args_get(args, 'b'), *bufdata; 80 size_t bufsize; 81 char *path; 82 83 if (bufname == NULL) { 84 if ((pb = paste_get_top(NULL)) == NULL) { 85 cmdq_error(item, "no buffers"); 86 return (CMD_RETURN_ERROR); 87 } 88 } else { 89 pb = paste_get_name(bufname); 90 if (pb == NULL) { 91 cmdq_error(item, "no buffer %s", bufname); 92 return (CMD_RETURN_ERROR); 93 } 94 } 95 bufdata = paste_buffer_data(pb, &bufsize); 96 97 if (cmd_get_entry(self) == &cmd_show_buffer_entry) 98 path = xstrdup("-"); 99 else 100 path = format_single_from_target(item, args->argv[0]); 101 if (args_has(args, 'a')) 102 flags = O_APPEND; 103 else 104 flags = 0; 105 file_write(cmdq_get_client(item), path, flags, bufdata, bufsize, 106 cmd_save_buffer_done, item); 107 free(path); 108 109 return (CMD_RETURN_WAIT); 110 } 111