Annotation of src/usr.bin/tmux/cmd-save-buffer.c, Revision 1.19
1.19 ! nicm 1: /* $OpenBSD: cmd-save-buffer.c,v 1.18 2013/03/24 09:30:41 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>
1.15 nicm 23: #include <stdlib.h>
1.1 nicm 24: #include <string.h>
1.18 nicm 25: #include <vis.h>
1.1 nicm 26:
27: #include "tmux.h"
28:
29: /*
1.11 nicm 30: * Saves a paste buffer to a file.
1.1 nicm 31: */
32:
1.19 ! nicm 33: enum cmd_retval cmd_save_buffer_exec(struct cmd *, struct cmd_q *);
1.1 nicm 34:
35: const struct cmd_entry cmd_save_buffer_entry = {
36: "save-buffer", "saveb",
1.10 nicm 37: "ab:", 1, 1,
1.13 nicm 38: "[-a] " CMD_BUFFER_USAGE " path",
1.10 nicm 39: 0,
40: NULL,
41: NULL,
42: cmd_save_buffer_exec
1.1 nicm 43: };
44:
1.18 nicm 45: const struct cmd_entry cmd_show_buffer_entry = {
46: "show-buffer", "showb",
47: "b:", 0, 0,
48: CMD_BUFFER_USAGE,
49: 0,
50: NULL,
51: NULL,
52: cmd_save_buffer_exec
53: };
54:
1.16 nicm 55: enum cmd_retval
1.19 ! nicm 56: cmd_save_buffer_exec(struct cmd *self, struct cmd_q *cmdq)
1.1 nicm 57: {
1.10 nicm 58: struct args *args = self->args;
1.17 nicm 59: struct client *c;
1.12 nicm 60: struct session *s;
1.1 nicm 61: struct paste_buffer *pb;
1.12 nicm 62: const char *path, *newpath, *wd;
1.18 nicm 63: char *cause, *start, *end;
64: size_t size, used;
1.10 nicm 65: int buffer;
1.8 nicm 66: mode_t mask;
67: FILE *f;
1.18 nicm 68: char *msg;
69: size_t msglen;
1.1 nicm 70:
1.10 nicm 71: if (!args_has(args, 'b')) {
1.9 nicm 72: if ((pb = paste_get_top(&global_buffers)) == NULL) {
1.19 ! nicm 73: cmdq_error(cmdq, "no buffers");
1.16 nicm 74: return (CMD_RETURN_ERROR);
1.1 nicm 75: }
76: } else {
1.10 nicm 77: buffer = args_strtonum(args, 'b', 0, INT_MAX, &cause);
78: if (cause != NULL) {
1.19 ! nicm 79: cmdq_error(cmdq, "buffer %s", cause);
1.15 nicm 80: free(cause);
1.16 nicm 81: return (CMD_RETURN_ERROR);
1.10 nicm 82: }
83:
84: pb = paste_get_index(&global_buffers, buffer);
1.9 nicm 85: if (pb == NULL) {
1.19 ! nicm 86: cmdq_error(cmdq, "no buffer %d", buffer);
1.16 nicm 87: return (CMD_RETURN_ERROR);
1.1 nicm 88: }
89: }
90:
1.18 nicm 91: if (self->entry == &cmd_show_buffer_entry)
92: path = "-";
93: else
94: path = args->argv[0];
1.10 nicm 95: if (strcmp(path, "-") == 0) {
1.19 ! nicm 96: c = cmdq->client;
! 97: if (c == NULL) {
! 98: cmdq_error(cmdq, "can't write to stdout");
! 99: return (CMD_RETURN_ERROR);
! 100: }
! 101: if (c->session == NULL || (c->flags & CLIENT_CONTROL))
1.18 nicm 102: goto do_stdout;
1.19 ! nicm 103: goto do_print;
1.18 nicm 104: }
105:
1.19 ! nicm 106: c = cmdq->client;
1.18 nicm 107: if (c != NULL)
108: wd = c->cwd;
1.19 ! nicm 109: else if ((s = cmd_current_session(cmdq, 0)) != NULL) {
1.18 nicm 110: wd = options_get_string(&s->options, "default-path");
111: if (*wd == '\0')
112: wd = s->cwd;
113: } else
114: wd = NULL;
115: if (wd != NULL && *wd != '\0') {
116: newpath = get_full_path(wd, path);
117: if (newpath != NULL)
118: path = newpath;
119: }
120:
121: mask = umask(S_IRWXG | S_IRWXO);
122: if (args_has(self->args, 'a'))
123: f = fopen(path, "ab");
124: else
125: f = fopen(path, "wb");
126: umask(mask);
127: if (f == NULL) {
1.19 ! nicm 128: cmdq_error(cmdq, "%s: %s", path, strerror(errno));
1.18 nicm 129: return (CMD_RETURN_ERROR);
130: }
131: if (fwrite(pb->data, 1, pb->size, f) != pb->size) {
1.19 ! nicm 132: cmdq_error(cmdq, "%s: fwrite error", path);
1.18 nicm 133: fclose(f);
134: return (CMD_RETURN_ERROR);
135: }
136: fclose(f);
137:
138: return (CMD_RETURN_NORMAL);
139:
140: do_stdout:
141: evbuffer_add(c->stdout_data, pb->data, pb->size);
142: server_push_stdout(c);
143: return (CMD_RETURN_NORMAL);
144:
145: do_print:
146: if (pb->size > (INT_MAX / 4) - 1) {
1.19 ! nicm 147: cmdq_error(cmdq, "buffer too big");
1.18 nicm 148: return (CMD_RETURN_ERROR);
149: }
150: msg = NULL;
151: msglen = 0;
1.12 nicm 152:
1.18 nicm 153: used = 0;
154: while (used != pb->size) {
155: start = pb->data + used;
156: end = memchr(start, '\n', pb->size - used);
157: if (end != NULL)
158: size = end - start;
1.7 nicm 159: else
1.18 nicm 160: size = pb->size - used;
161:
162: msglen = size * 4 + 1;
163: msg = xrealloc(msg, 1, msglen);
164:
165: strvisx(msg, start, size, VIS_OCTAL|VIS_TAB);
1.19 ! nicm 166: cmdq_print(cmdq, "%s", msg);
1.18 nicm 167:
168: used += size + (end != NULL);
1.1 nicm 169: }
170:
1.18 nicm 171: free(msg);
1.16 nicm 172: return (CMD_RETURN_NORMAL);
1.1 nicm 173: }
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