Annotation of src/usr.bin/tmux/cmd-load-buffer.c, Revision 1.8
1.8 ! nicm 1: /* $OpenBSD: cmd-load-buffer.c,v 1.7 2009/10/26 21:25:57 nicm Exp $ */
1.1 nicm 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 <stdlib.h>
24: #include <string.h>
25: #include <unistd.h>
26:
27: #include "tmux.h"
28:
29: /*
30: * Loads a session paste buffer from a file.
31: */
32:
33: int cmd_load_buffer_exec(struct cmd *, struct cmd_ctx *);
34:
35: const struct cmd_entry cmd_load_buffer_entry = {
36: "load-buffer", "loadb",
37: CMD_BUFFER_SESSION_USAGE " path",
1.8 ! nicm 38: CMD_ARG1, "",
1.1 nicm 39: cmd_buffer_init,
40: cmd_buffer_parse,
41: cmd_load_buffer_exec,
42: cmd_buffer_free,
43: cmd_buffer_print
44: };
45:
46: int
47: cmd_load_buffer_exec(struct cmd *self, struct cmd_ctx *ctx)
48: {
49: struct cmd_buffer_data *data = self->data;
50: struct session *s;
1.6 nicm 51: struct stat sb;
1.1 nicm 52: FILE *f;
1.6 nicm 53: u_char *buf;
54: u_int limit;
1.1 nicm 55:
56: if ((s = cmd_find_session(ctx, data->target)) == NULL)
57: return (-1);
58:
1.7 nicm 59: if ((f = fopen(data->arg, "rb")) == NULL) {
1.1 nicm 60: ctx->error(ctx, "%s: %s", data->arg, strerror(errno));
61: return (-1);
62: }
63:
1.7 nicm 64: if (fstat(fileno(f), &sb) < 0) {
1.1 nicm 65: ctx->error(ctx, "%s: %s", data->arg, strerror(errno));
1.7 nicm 66: fclose(f);
1.1 nicm 67: return (-1);
68: }
69:
70: /*
71: * We don't want to die due to memory exhaustion, hence xmalloc can't
72: * be used here.
73: */
1.6 nicm 74: if ((buf = malloc(sb.st_size + 1)) == NULL) {
1.1 nicm 75: ctx->error(ctx, "malloc error: %s", strerror(errno));
1.2 nicm 76: fclose(f);
1.1 nicm 77: return (-1);
78: }
79:
1.6 nicm 80: if (fread(buf, 1, sb.st_size, f) != (size_t) sb.st_size) {
1.1 nicm 81: ctx->error(ctx, "%s: fread error", data->arg);
82: xfree(buf);
83: fclose(f);
84: return (-1);
85: }
86:
87: fclose(f);
88:
89: limit = options_get_number(&s->options, "buffer-limit");
90: if (data->buffer == -1) {
1.6 nicm 91: paste_add(&s->buffers, buf, sb.st_size, limit);
1.1 nicm 92: return (0);
93: }
1.6 nicm 94: if (paste_replace(&s->buffers, data->buffer, buf, sb.st_size) != 0) {
1.1 nicm 95: ctx->error(ctx, "no buffer %d", data->buffer);
96: xfree(buf);
97: return (-1);
98: }
99:
100: return (0);
101: }