1 /* $OpenBSD$ */ 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 28 #include "tmux.h" 29 30 /* 31 * Saves a paste buffer to a file. 32 */ 33 34 static enum cmd_retval cmd_save_buffer_exec(struct cmd *, struct cmdq_item *); 35 36 const struct cmd_entry cmd_save_buffer_entry = { 37 .name = "save-buffer", 38 .alias = "saveb", 39 40 .args = { "ab:", 1, 1, NULL }, 41 .usage = "[-a] " CMD_BUFFER_USAGE " path", 42 43 .flags = CMD_AFTERHOOK, 44 .exec = cmd_save_buffer_exec 45 }; 46 47 const struct cmd_entry cmd_show_buffer_entry = { 48 .name = "show-buffer", 49 .alias = "showb", 50 51 .args = { "b:", 0, 0, NULL }, 52 .usage = CMD_BUFFER_USAGE, 53 54 .flags = CMD_AFTERHOOK, 55 .exec = cmd_save_buffer_exec 56 }; 57 58 static void 59 cmd_save_buffer_done(__unused struct client *c, const char *path, int error, 60 __unused int closed, __unused struct evbuffer *buffer, void *data) 61 { 62 struct cmdq_item *item = data; 63 64 if (!closed) 65 return; 66 67 if (error != 0) 68 cmdq_error(item, "%s: %s", path, strerror(error)); 69 cmdq_continue(item); 70 } 71 72 static enum cmd_retval 73 cmd_save_buffer_exec(struct cmd *self, struct cmdq_item *item) 74 { 75 struct args *args = cmd_get_args(self); 76 struct client *c = cmdq_get_client(item); 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 struct evbuffer *evb; 83 84 if (bufname == NULL) { 85 if ((pb = paste_get_top(NULL)) == NULL) { 86 cmdq_error(item, "no buffers"); 87 return (CMD_RETURN_ERROR); 88 } 89 } else { 90 pb = paste_get_name(bufname); 91 if (pb == NULL) { 92 cmdq_error(item, "no buffer %s", bufname); 93 return (CMD_RETURN_ERROR); 94 } 95 } 96 bufdata = paste_buffer_data(pb, &bufsize); 97 98 if (cmd_get_entry(self) == &cmd_show_buffer_entry) { 99 if (c->session != NULL || (c->flags & CLIENT_CONTROL)) { 100 evb = evbuffer_new(); 101 if (evb == NULL) 102 fatalx("out of memory"); 103 evbuffer_add(evb, bufdata, bufsize); 104 cmdq_print_data(item, 1, evb); 105 evbuffer_free(evb); 106 return (CMD_RETURN_NORMAL); 107 } 108 path = xstrdup("-"); 109 } else 110 path = format_single_from_target(item, args_string(args, 0)); 111 if (args_has(args, 'a')) 112 flags = O_APPEND; 113 else 114 flags = O_TRUNC; 115 file_write(cmdq_get_client(item), path, flags, bufdata, bufsize, 116 cmd_save_buffer_done, item); 117 free(path); 118 119 return (CMD_RETURN_WAIT); 120 } 121