/* $OpenBSD: cmd-save-buffer.c,v 1.27 2014/10/20 22:29:25 nicm Exp $ */ /* * Copyright (c) 2009 Tiago Cunha * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include #include #include #include #include #include #include #include #include "tmux.h" /* * Saves a paste buffer to a file. */ enum cmd_retval cmd_save_buffer_exec(struct cmd *, struct cmd_q *); const struct cmd_entry cmd_save_buffer_entry = { "save-buffer", "saveb", "ab:", 1, 1, "[-a] " CMD_BUFFER_USAGE " path", 0, cmd_save_buffer_exec }; const struct cmd_entry cmd_show_buffer_entry = { "show-buffer", "showb", "b:", 0, 0, CMD_BUFFER_USAGE, 0, cmd_save_buffer_exec }; enum cmd_retval cmd_save_buffer_exec(struct cmd *self, struct cmd_q *cmdq) { struct args *args = self->args; struct client *c = cmdq->client; struct session *s; struct paste_buffer *pb; const char *path, *bufname; char *start, *end, *msg; size_t size, used, msglen; int cwd, fd; FILE *f; if (!args_has(args, 'b')) { if ((pb = paste_get_top()) == NULL) { cmdq_error(cmdq, "no buffers"); return (CMD_RETURN_ERROR); } } else { bufname = args_get(args, 'b'); pb = paste_get_name(bufname); if (pb == NULL) { cmdq_error(cmdq, "no buffer %s", bufname); return (CMD_RETURN_ERROR); } } if (self->entry == &cmd_show_buffer_entry) path = "-"; else path = args->argv[0]; if (strcmp(path, "-") == 0) { if (c == NULL) { cmdq_error(cmdq, "can't write to stdout"); return (CMD_RETURN_ERROR); } if (c->session == NULL || (c->flags & CLIENT_CONTROL)) goto do_stdout; goto do_print; } if (c != NULL && c->session == NULL) cwd = c->cwd; else if ((s = cmd_current_session(cmdq, 0)) != NULL) cwd = s->cwd; else cwd = AT_FDCWD; f = NULL; if (args_has(self->args, 'a')) { fd = openat(cwd, path, O_CREAT|O_RDWR|O_APPEND, 0600); if (fd != -1) f = fdopen(fd, "ab"); } else { fd = openat(cwd, path, O_CREAT|O_RDWR|O_TRUNC, 0600); if (fd != -1) f = fdopen(fd, "wb"); } if (f == NULL) { if (fd != -1) close(fd); cmdq_error(cmdq, "%s: %s", path, strerror(errno)); return (CMD_RETURN_ERROR); } if (fwrite(pb->data, 1, pb->size, f) != pb->size) { cmdq_error(cmdq, "%s: fwrite error", path); fclose(f); return (CMD_RETURN_ERROR); } fclose(f); return (CMD_RETURN_NORMAL); do_stdout: evbuffer_add(c->stdout_data, pb->data, pb->size); server_push_stdout(c); return (CMD_RETURN_NORMAL); do_print: if (pb->size > (INT_MAX / 4) - 1) { cmdq_error(cmdq, "buffer too big"); return (CMD_RETURN_ERROR); } msg = NULL; used = 0; while (used != pb->size) { start = pb->data + used; end = memchr(start, '\n', pb->size - used); if (end != NULL) size = end - start; else size = pb->size - used; msglen = size * 4 + 1; msg = xrealloc(msg, msglen); strvisx(msg, start, size, VIS_OCTAL|VIS_TAB); cmdq_print(cmdq, "%s", msg); used += size + (end != NULL); } free(msg); return (CMD_RETURN_NORMAL); }