Annotation of src/usr.bin/tmux/cfg.c, Revision 1.59
1.59 ! nicm 1: /* $OpenBSD: cfg.c,v 1.58 2017/04/25 14:46:23 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>
1.40 nicm 26: #include <unistd.h>
1.32 tobias 27: #include <util.h>
1.1 nicm 28:
29: #include "tmux.h"
30:
1.58 nicm 31: static char *cfg_file;
32: int cfg_finished;
33: static char **cfg_causes;
34: static u_int cfg_ncauses;
35: static struct cmdq_item *cfg_item;
36:
37: static enum cmd_retval
38: cfg_client_done(__unused struct cmdq_item *item, __unused void *data)
39: {
40: if (!cfg_finished)
41: return (CMD_RETURN_WAIT);
42: return (CMD_RETURN_NORMAL);
43: }
1.40 nicm 44:
1.49 nicm 45: static enum cmd_retval
1.50 nicm 46: cfg_done(__unused struct cmdq_item *item, __unused void *data)
1.49 nicm 47: {
48: if (cfg_finished)
49: return (CMD_RETURN_NORMAL);
50: cfg_finished = 1;
51:
52: if (!RB_EMPTY(&sessions))
53: cfg_show_causes(RB_MIN(sessions, &sessions));
1.57 nicm 54:
1.58 nicm 55: if (cfg_item != NULL)
56: cfg_item->flags &= ~CMDQ_WAITING;
57:
1.57 nicm 58: status_prompt_load_history();
1.49 nicm 59:
60: return (CMD_RETURN_NORMAL);
61: }
1.40 nicm 62:
63: void
1.41 nicm 64: set_cfg_file(const char *path)
65: {
66: free(cfg_file);
67: cfg_file = xstrdup(path);
68: }
69:
70: void
1.40 nicm 71: start_cfg(void)
72: {
1.41 nicm 73: const char *home;
1.45 tim 74: int quiet = 0;
1.58 nicm 75: struct client *c;
1.40 nicm 76:
1.56 nicm 77: /*
1.58 nicm 78: * Configuration files are loaded without a client, so NULL is passed
79: * into load_cfg() and commands run in the global queue with
80: * item->client NULL.
81: *
82: * However, we must block the initial client (but just the initial
83: * client) so that its command runs after the configuration is loaded.
84: * Because start_cfg() is called so early, we can be sure the client's
85: * command queue is currently empty and our callback will be at the
86: * front - we need to get in before MSG_COMMAND.
1.56 nicm 87: */
1.58 nicm 88: c = TAILQ_FIRST(&clients);
89: if (c != NULL) {
90: cfg_item = cmdq_get_callback(cfg_client_done, NULL);
91: cmdq_append(c, cfg_item);
92: }
1.40 nicm 93:
1.56 nicm 94: load_cfg(TMUX_CONF, NULL, NULL, 1);
1.40 nicm 95:
1.41 nicm 96: if (cfg_file == NULL && (home = find_home()) != NULL) {
97: xasprintf(&cfg_file, "%s/.tmux.conf", home);
1.45 tim 98: quiet = 1;
1.41 nicm 99: }
1.45 tim 100: if (cfg_file != NULL)
1.56 nicm 101: load_cfg(cfg_file, NULL, NULL, quiet);
1.40 nicm 102:
1.56 nicm 103: cmdq_append(NULL, cmdq_get_callback(cfg_done, NULL));
1.40 nicm 104: }
1.1 nicm 105:
1.28 nicm 106: int
1.50 nicm 107: load_cfg(const char *path, struct client *c, struct cmdq_item *item, int quiet)
1.1 nicm 108: {
1.50 nicm 109: FILE *f;
1.52 nicm 110: const char delim[3] = { '\\', '\\', '\0' };
111: u_int found = 0;
1.50 nicm 112: size_t line = 0;
1.52 nicm 113: char *buf, *cause1, *p, *q, *s;
1.50 nicm 114: struct cmd_list *cmdlist;
115: struct cmdq_item *new_item;
1.52 nicm 116: int condition = 0;
117: struct format_tree *ft;
1.1 nicm 118:
1.29 nicm 119: log_debug("loading %s", path);
1.1 nicm 120: if ((f = fopen(path, "rb")) == NULL) {
1.45 tim 121: if (errno == ENOENT && quiet)
122: return (0);
123: cfg_add_cause("%s: %s", path, strerror(errno));
1.28 nicm 124: return (-1);
1.25 nicm 125: }
126:
1.42 nicm 127: while ((buf = fparseln(f, NULL, &line, delim, 0)) != NULL) {
1.32 tobias 128: log_debug("%s: %s", path, buf);
1.13 nicm 129:
1.32 tobias 130: p = buf;
1.52 nicm 131: while (isspace((u_char)*p))
1.32 tobias 132: p++;
133: if (*p == '\0') {
134: free(buf);
1.21 nicm 135: continue;
1.22 nicm 136: }
1.52 nicm 137: q = p + strlen(p) - 1;
138: while (q != p && isspace((u_char)*q))
139: *q-- = '\0';
140:
141: if (condition != 0 && strcmp(p, "%endif") == 0) {
142: condition = 0;
143: continue;
144: }
145: if (strncmp(p, "%if ", 4) == 0) {
146: if (condition != 0) {
147: cfg_add_cause("%s:%zu: nested %%if", path,
148: line);
149: continue;
150: }
1.59 ! nicm 151: ft = format_create(NULL, NULL, FORMAT_NONE,
! 152: FORMAT_NOJOBS);
1.52 nicm 153:
154: s = p + 3;
155: while (isspace((u_char)*s))
156: s++;
157: s = format_expand(ft, s);
158: if (*s != '\0' && (s[0] != '0' || s[1] != '\0'))
159: condition = 1;
160: else
161: condition = -1;
162: free(s);
163:
164: format_free(ft);
165: continue;
166: }
167: if (condition == -1)
168: continue;
1.21 nicm 169:
1.53 nicm 170: cmdlist = cmd_string_parse(p, path, line, &cause1);
171: if (cmdlist == NULL) {
1.32 tobias 172: free(buf);
1.28 nicm 173: if (cause1 == NULL)
1.1 nicm 174: continue;
1.33 nicm 175: cfg_add_cause("%s:%zu: %s", path, line, cause1);
1.28 nicm 176: free(cause1);
1.9 nicm 177: continue;
1.20 nicm 178: }
1.32 tobias 179: free(buf);
1.28 nicm 180:
1.1 nicm 181: if (cmdlist == NULL)
182: continue;
1.50 nicm 183: new_item = cmdq_get_command(cmdlist, NULL, NULL, 0);
184: if (item != NULL)
185: cmdq_insert_after(item, new_item);
1.49 nicm 186: else
1.50 nicm 187: cmdq_append(c, new_item);
1.1 nicm 188: cmd_list_free(cmdlist);
1.49 nicm 189:
1.28 nicm 190: found++;
1.1 nicm 191: }
192: fclose(f);
1.25 nicm 193:
1.28 nicm 194: return (found);
1.33 nicm 195: }
196:
197: void
1.36 nicm 198: cfg_add_cause(const char *fmt, ...)
1.33 nicm 199: {
1.36 nicm 200: va_list ap;
201: char *msg;
1.33 nicm 202:
203: va_start(ap, fmt);
204: xvasprintf(&msg, fmt, ap);
1.38 nicm 205: va_end(ap);
1.33 nicm 206:
1.35 nicm 207: cfg_ncauses++;
208: cfg_causes = xreallocarray(cfg_causes, cfg_ncauses, sizeof *cfg_causes);
209: cfg_causes[cfg_ncauses - 1] = msg;
1.33 nicm 210: }
211:
212: void
1.50 nicm 213: cfg_print_causes(struct cmdq_item *item)
1.33 nicm 214: {
215: u_int i;
216:
1.35 nicm 217: for (i = 0; i < cfg_ncauses; i++) {
1.50 nicm 218: cmdq_print(item, "%s", cfg_causes[i]);
1.35 nicm 219: free(cfg_causes[i]);
1.33 nicm 220: }
1.35 nicm 221:
222: free(cfg_causes);
223: cfg_causes = NULL;
1.37 nicm 224: cfg_ncauses = 0;
1.17 nicm 225: }
226:
227: void
1.28 nicm 228: cfg_show_causes(struct session *s)
1.17 nicm 229: {
230: struct window_pane *wp;
231: u_int i;
232:
1.35 nicm 233: if (s == NULL || cfg_ncauses == 0)
1.17 nicm 234: return;
235: wp = s->curw->window->active;
236:
237: window_pane_set_mode(wp, &window_copy_mode);
238: window_copy_init_for_output(wp);
1.35 nicm 239: for (i = 0; i < cfg_ncauses; i++) {
240: window_copy_add(wp, "%s", cfg_causes[i]);
241: free(cfg_causes[i]);
1.17 nicm 242: }
1.35 nicm 243:
244: free(cfg_causes);
245: cfg_causes = NULL;
1.37 nicm 246: cfg_ncauses = 0;
1.1 nicm 247: }
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