Annotation of src/usr.bin/tmux/cmd-load-buffer.c, Revision 1.26
1.26 ! nicm 1: /* $OpenBSD: cmd-load-buffer.c,v 1.25 2013/10/10 12:26:35 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:
1.12 nicm 19: #include <sys/types.h>
20:
1.1 nicm 21: #include <errno.h>
1.25 nicm 22: #include <fcntl.h>
1.11 nicm 23: #include <stdio.h>
1.1 nicm 24: #include <stdlib.h>
25: #include <string.h>
1.12 nicm 26: #include <unistd.h>
1.1 nicm 27:
28: #include "tmux.h"
29:
30: /*
1.18 nicm 31: * Loads a paste buffer from a file.
1.1 nicm 32: */
33:
1.23 nicm 34: enum cmd_retval cmd_load_buffer_exec(struct cmd *, struct cmd_q *);
1.22 nicm 35: void cmd_load_buffer_callback(struct client *, int, void *);
1.1 nicm 36:
37: const struct cmd_entry cmd_load_buffer_entry = {
38: "load-buffer", "loadb",
1.16 nicm 39: "b:", 1, 1,
1.15 nicm 40: CMD_BUFFER_USAGE " path",
1.16 nicm 41: 0,
42: NULL,
43: cmd_load_buffer_exec
1.1 nicm 44: };
45:
1.22 nicm 46: enum cmd_retval
1.23 nicm 47: cmd_load_buffer_exec(struct cmd *self, struct cmd_q *cmdq)
1.1 nicm 48: {
1.16 nicm 49: struct args *args = self->args;
1.23 nicm 50: struct client *c = cmdq->client;
1.19 nicm 51: struct session *s;
1.16 nicm 52: FILE *f;
1.25 nicm 53: const char *path;
1.16 nicm 54: char *pdata, *new_pdata, *cause;
55: size_t psize;
56: u_int limit;
1.25 nicm 57: int ch, error, buffer, *buffer_ptr, cwd, fd;
1.16 nicm 58:
59: if (!args_has(args, 'b'))
60: buffer = -1;
61: else {
62: buffer = args_strtonum(args, 'b', 0, INT_MAX, &cause);
63: if (cause != NULL) {
1.23 nicm 64: cmdq_error(cmdq, "buffer %s", cause);
1.21 nicm 65: free(cause);
1.22 nicm 66: return (CMD_RETURN_ERROR);
1.16 nicm 67: }
68: }
1.1 nicm 69:
1.16 nicm 70: path = args->argv[0];
71: if (strcmp(path, "-") == 0) {
72: buffer_ptr = xmalloc(sizeof *buffer_ptr);
73: *buffer_ptr = buffer;
74:
1.26 ! nicm 75: error = server_set_stdin_callback(c, cmd_load_buffer_callback,
1.20 nicm 76: buffer_ptr, &cause);
77: if (error != 0) {
1.23 nicm 78: cmdq_error(cmdq, "%s: %s", path, cause);
1.21 nicm 79: free(cause);
1.22 nicm 80: return (CMD_RETURN_ERROR);
1.20 nicm 81: }
1.23 nicm 82: return (CMD_RETURN_WAIT);
1.13 nicm 83: }
84:
1.25 nicm 85: if (c != NULL && c->session == NULL)
86: cwd = c->cwd;
87: else if ((s = cmd_current_session(cmdq, 0)) != NULL)
88: cwd = s->cwd;
89: else
90: cwd = AT_FDCWD;
91:
92: if ((fd = openat(cwd, path, O_RDONLY)) == -1 ||
93: (f = fdopen(fd, "rb")) == NULL) {
94: if (fd != -1)
95: close(fd);
1.23 nicm 96: cmdq_error(cmdq, "%s: %s", path, strerror(errno));
1.22 nicm 97: return (CMD_RETURN_ERROR);
1.1 nicm 98: }
99:
1.11 nicm 100: pdata = NULL;
101: psize = 0;
102: while ((ch = getc(f)) != EOF) {
103: /* Do not let the server die due to memory exhaustion. */
104: if ((new_pdata = realloc(pdata, psize + 2)) == NULL) {
1.23 nicm 105: cmdq_error(cmdq, "realloc error: %s", strerror(errno));
1.11 nicm 106: goto error;
107: }
108: pdata = new_pdata;
109: pdata[psize++] = ch;
1.1 nicm 110: }
1.11 nicm 111: if (ferror(f)) {
1.23 nicm 112: cmdq_error(cmdq, "%s: read error", path);
1.9 nicm 113: goto error;
1.1 nicm 114: }
1.11 nicm 115: if (pdata != NULL)
116: pdata[psize] = '\0';
1.1 nicm 117:
1.13 nicm 118: fclose(f);
1.1 nicm 119:
1.15 nicm 120: limit = options_get_number(&global_options, "buffer-limit");
1.16 nicm 121: if (buffer == -1) {
1.15 nicm 122: paste_add(&global_buffers, pdata, psize, limit);
1.22 nicm 123: return (CMD_RETURN_NORMAL);
1.1 nicm 124: }
1.16 nicm 125: if (paste_replace(&global_buffers, buffer, pdata, psize) != 0) {
1.23 nicm 126: cmdq_error(cmdq, "no buffer %d", buffer);
1.21 nicm 127: free(pdata);
1.22 nicm 128: return (CMD_RETURN_ERROR);
1.1 nicm 129: }
130:
1.22 nicm 131: return (CMD_RETURN_NORMAL);
1.9 nicm 132:
133: error:
1.21 nicm 134: free(pdata);
1.13 nicm 135: if (f != NULL)
136: fclose(f);
1.22 nicm 137: return (CMD_RETURN_ERROR);
1.13 nicm 138: }
139:
140: void
1.20 nicm 141: cmd_load_buffer_callback(struct client *c, int closed, void *data)
1.13 nicm 142: {
1.16 nicm 143: int *buffer = data;
1.15 nicm 144: char *pdata;
145: size_t psize;
146: u_int limit;
1.13 nicm 147:
1.20 nicm 148: if (!closed)
149: return;
150: c->stdin_callback = NULL;
151:
152: c->references--;
1.23 nicm 153: if (c->flags & CLIENT_DEAD)
154: return;
1.13 nicm 155:
1.20 nicm 156: psize = EVBUFFER_LENGTH(c->stdin_data);
1.16 nicm 157: if (psize == 0 || (pdata = malloc(psize + 1)) == NULL) {
1.21 nicm 158: free(data);
1.23 nicm 159: goto out;
1.16 nicm 160: }
1.20 nicm 161: memcpy(pdata, EVBUFFER_DATA(c->stdin_data), psize);
1.13 nicm 162: pdata[psize] = '\0';
1.20 nicm 163: evbuffer_drain(c->stdin_data, psize);
1.13 nicm 164:
1.15 nicm 165: limit = options_get_number(&global_options, "buffer-limit");
166: if (*buffer == -1)
167: paste_add(&global_buffers, pdata, psize, limit);
168: else if (paste_replace(&global_buffers, *buffer, pdata, psize) != 0) {
1.13 nicm 169: /* No context so can't use server_client_msg_error. */
1.20 nicm 170: evbuffer_add_printf(c->stderr_data, "no buffer %d\n", *buffer);
171: server_push_stderr(c);
1.13 nicm 172: }
1.16 nicm 173:
1.21 nicm 174: free(data);
1.23 nicm 175:
176: out:
177: cmdq_continue(c->cmdq);
1.1 nicm 178: }
![[BACK]](/icons/back.gif){kind=icon}
Return to cmd-load-buffer.c CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / src / usr.bin / tmux