Annotation of src/usr.bin/tmux/cfg.c, Revision 1.60
1.60 ! nicm 1: /* $OpenBSD: cfg.c,v 1.59 2017/05/01 12:20:55 nicm Exp $ */
1.1 nicm 2:
3: /*
1.44 nicm 4: * Copyright (c) 2008 Nicholas Marriott <nicholas.marriott@gmail.com>
1.1 nicm 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:
1.21 nicm 21: #include <ctype.h>
1.1 nicm 22: #include <errno.h>
23: #include <stdio.h>
1.15 nicm 24: #include <stdlib.h>
1.1 nicm 25: #include <string.h>
1.32 tobias 26: #include <util.h>
1.1 nicm 27:
28: #include "tmux.h"
29:
1.58 nicm 30: static char *cfg_file;
31: int cfg_finished;
32: static char **cfg_causes;
33: static u_int cfg_ncauses;
34: static struct cmdq_item *cfg_item;
35:
36: static enum cmd_retval
37: cfg_client_done(__unused struct cmdq_item *item, __unused void *data)
38: {
39: if (!cfg_finished)
40: return (CMD_RETURN_WAIT);
41: return (CMD_RETURN_NORMAL);
42: }
1.40 nicm 43:
1.49 nicm 44: static enum cmd_retval
1.50 nicm 45: cfg_done(__unused struct cmdq_item *item, __unused void *data)
1.49 nicm 46: {
47: if (cfg_finished)
48: return (CMD_RETURN_NORMAL);
49: cfg_finished = 1;
50:
51: if (!RB_EMPTY(&sessions))
52: cfg_show_causes(RB_MIN(sessions, &sessions));
1.57 nicm 53:
1.58 nicm 54: if (cfg_item != NULL)
55: cfg_item->flags &= ~CMDQ_WAITING;
56:
1.57 nicm 57: status_prompt_load_history();
1.49 nicm 58:
59: return (CMD_RETURN_NORMAL);
60: }
1.40 nicm 61:
62: void
1.41 nicm 63: set_cfg_file(const char *path)
64: {
65: free(cfg_file);
66: cfg_file = xstrdup(path);
67: }
68:
69: void
1.40 nicm 70: start_cfg(void)
71: {
1.41 nicm 72: const char *home;
1.45 tim 73: int quiet = 0;
1.58 nicm 74: struct client *c;
1.40 nicm 75:
1.56 nicm 76: /*
1.58 nicm 77: * Configuration files are loaded without a client, so NULL is passed
78: * into load_cfg() and commands run in the global queue with
79: * item->client NULL.
80: *
81: * However, we must block the initial client (but just the initial
82: * client) so that its command runs after the configuration is loaded.
83: * Because start_cfg() is called so early, we can be sure the client's
84: * command queue is currently empty and our callback will be at the
85: * front - we need to get in before MSG_COMMAND.
1.56 nicm 86: */
1.58 nicm 87: c = TAILQ_FIRST(&clients);
88: if (c != NULL) {
89: cfg_item = cmdq_get_callback(cfg_client_done, NULL);
90: cmdq_append(c, cfg_item);
91: }
1.40 nicm 92:
1.56 nicm 93: load_cfg(TMUX_CONF, NULL, NULL, 1);
1.40 nicm 94:
1.41 nicm 95: if (cfg_file == NULL && (home = find_home()) != NULL) {
96: xasprintf(&cfg_file, "%s/.tmux.conf", home);
1.45 tim 97: quiet = 1;
1.41 nicm 98: }
1.45 tim 99: if (cfg_file != NULL)
1.56 nicm 100: load_cfg(cfg_file, NULL, NULL, quiet);
1.40 nicm 101:
1.56 nicm 102: cmdq_append(NULL, cmdq_get_callback(cfg_done, NULL));
1.40 nicm 103: }
1.1 nicm 104:
1.28 nicm 105: int
1.50 nicm 106: load_cfg(const char *path, struct client *c, struct cmdq_item *item, int quiet)
1.1 nicm 107: {
1.50 nicm 108: FILE *f;
1.52 nicm 109: const char delim[3] = { '\\', '\\', '\0' };
110: u_int found = 0;
1.50 nicm 111: size_t line = 0;
1.52 nicm 112: char *buf, *cause1, *p, *q, *s;
1.50 nicm 113: struct cmd_list *cmdlist;
114: struct cmdq_item *new_item;
1.52 nicm 115: int condition = 0;
116: struct format_tree *ft;
1.1 nicm 117:
1.29 nicm 118: log_debug("loading %s", path);
1.1 nicm 119: if ((f = fopen(path, "rb")) == NULL) {
1.45 tim 120: if (errno == ENOENT && quiet)
121: return (0);
122: cfg_add_cause("%s: %s", path, strerror(errno));
1.28 nicm 123: return (-1);
1.25 nicm 124: }
125:
1.42 nicm 126: while ((buf = fparseln(f, NULL, &line, delim, 0)) != NULL) {
1.32 tobias 127: log_debug("%s: %s", path, buf);
1.13 nicm 128:
1.32 tobias 129: p = buf;
1.52 nicm 130: while (isspace((u_char)*p))
1.32 tobias 131: p++;
132: if (*p == '\0') {
133: free(buf);
1.21 nicm 134: continue;
1.22 nicm 135: }
1.52 nicm 136: q = p + strlen(p) - 1;
137: while (q != p && isspace((u_char)*q))
138: *q-- = '\0';
139:
140: if (condition != 0 && strcmp(p, "%endif") == 0) {
141: condition = 0;
142: continue;
143: }
144: if (strncmp(p, "%if ", 4) == 0) {
145: if (condition != 0) {
146: cfg_add_cause("%s:%zu: nested %%if", path,
147: line);
148: continue;
149: }
1.59 nicm 150: ft = format_create(NULL, NULL, FORMAT_NONE,
151: FORMAT_NOJOBS);
1.52 nicm 152:
153: s = p + 3;
154: while (isspace((u_char)*s))
155: s++;
156: s = format_expand(ft, s);
157: if (*s != '\0' && (s[0] != '0' || s[1] != '\0'))
158: condition = 1;
159: else
160: condition = -1;
161: free(s);
162:
163: format_free(ft);
164: continue;
165: }
166: if (condition == -1)
167: continue;
1.21 nicm 168:
1.53 nicm 169: cmdlist = cmd_string_parse(p, path, line, &cause1);
170: if (cmdlist == NULL) {
1.32 tobias 171: free(buf);
1.28 nicm 172: if (cause1 == NULL)
1.1 nicm 173: continue;
1.33 nicm 174: cfg_add_cause("%s:%zu: %s", path, line, cause1);
1.28 nicm 175: free(cause1);
1.9 nicm 176: continue;
1.20 nicm 177: }
1.32 tobias 178: free(buf);
1.28 nicm 179:
1.1 nicm 180: if (cmdlist == NULL)
181: continue;
1.50 nicm 182: new_item = cmdq_get_command(cmdlist, NULL, NULL, 0);
183: if (item != NULL)
184: cmdq_insert_after(item, new_item);
1.49 nicm 185: else
1.50 nicm 186: cmdq_append(c, new_item);
1.1 nicm 187: cmd_list_free(cmdlist);
1.49 nicm 188:
1.28 nicm 189: found++;
1.1 nicm 190: }
191: fclose(f);
1.25 nicm 192:
1.28 nicm 193: return (found);
1.33 nicm 194: }
195:
196: void
1.36 nicm 197: cfg_add_cause(const char *fmt, ...)
1.33 nicm 198: {
1.36 nicm 199: va_list ap;
200: char *msg;
1.33 nicm 201:
202: va_start(ap, fmt);
203: xvasprintf(&msg, fmt, ap);
1.38 nicm 204: va_end(ap);
1.33 nicm 205:
1.35 nicm 206: cfg_ncauses++;
207: cfg_causes = xreallocarray(cfg_causes, cfg_ncauses, sizeof *cfg_causes);
208: cfg_causes[cfg_ncauses - 1] = msg;
1.33 nicm 209: }
210:
211: void
1.50 nicm 212: cfg_print_causes(struct cmdq_item *item)
1.33 nicm 213: {
214: u_int i;
215:
1.35 nicm 216: for (i = 0; i < cfg_ncauses; i++) {
1.50 nicm 217: cmdq_print(item, "%s", cfg_causes[i]);
1.35 nicm 218: free(cfg_causes[i]);
1.33 nicm 219: }
1.35 nicm 220:
221: free(cfg_causes);
222: cfg_causes = NULL;
1.37 nicm 223: cfg_ncauses = 0;
1.17 nicm 224: }
225:
226: void
1.28 nicm 227: cfg_show_causes(struct session *s)
1.17 nicm 228: {
229: struct window_pane *wp;
230: u_int i;
231:
1.35 nicm 232: if (s == NULL || cfg_ncauses == 0)
1.17 nicm 233: return;
234: wp = s->curw->window->active;
235:
1.60 ! nicm 236: window_pane_set_mode(wp, &window_copy_mode, NULL, NULL);
1.17 nicm 237: window_copy_init_for_output(wp);
1.35 nicm 238: for (i = 0; i < cfg_ncauses; i++) {
239: window_copy_add(wp, "%s", cfg_causes[i]);
240: free(cfg_causes[i]);
1.17 nicm 241: }
1.35 nicm 242:
243: free(cfg_causes);
244: cfg_causes = NULL;
1.37 nicm 245: cfg_ncauses = 0;
1.1 nicm 246: }
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