Annotation of src/usr.bin/tmux/cfg.c, Revision 1.19
1.19 ! nicm 1: /* $OpenBSD: cfg.c,v 1.18 2012/11/27 16:12:29 nicm Exp $ */
1.1 nicm 2:
3: /*
4: * Copyright (c) 2008 Nicholas Marriott <nicm@users.sourceforge.net>
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 <stdio.h>
1.15 nicm 24: #include <stdlib.h>
1.1 nicm 25: #include <string.h>
26:
27: #include "tmux.h"
28:
29: /*
30: * Config file parser. Pretty quick and simple, each line is parsed into a
31: * argv array and executed as a command.
32: */
33:
34: void printflike2 cfg_print(struct cmd_ctx *, const char *, ...);
35: void printflike2 cfg_error(struct cmd_ctx *, const char *, ...);
36:
1.18 nicm 37: char *cfg_cause;
38: int cfg_finished;
39: int cfg_references;
40: struct causelist cfg_causes;
1.1 nicm 41:
1.8 nicm 42: /* ARGSUSED */
1.1 nicm 43: void printflike2
44: cfg_print(unused struct cmd_ctx *ctx, unused const char *fmt, ...)
45: {
46: }
47:
1.8 nicm 48: /* ARGSUSED */
1.1 nicm 49: void printflike2
50: cfg_error(unused struct cmd_ctx *ctx, const char *fmt, ...)
51: {
52: va_list ap;
53:
54: va_start(ap, fmt);
55: xvasprintf(&cfg_cause, fmt, ap);
56: va_end(ap);
57: }
58:
1.10 nicm 59: void printflike2
60: cfg_add_cause(struct causelist *causes, const char *fmt, ...)
1.9 nicm 61: {
62: char *cause;
63: va_list ap;
64:
65: va_start(ap, fmt);
66: xvasprintf(&cause, fmt, ap);
67: va_end(ap);
68:
1.10 nicm 69: ARRAY_ADD(causes, cause);
1.9 nicm 70: }
71:
72: /*
73: * Load configuration file. Returns -1 for an error with a list of messages in
1.11 nicm 74: * causes. Note that causes must be initialised by the caller!
1.9 nicm 75: */
1.19 ! nicm 76: enum cmd_retval
1.10 nicm 77: load_cfg(const char *path, struct cmd_ctx *ctxin, struct causelist *causes)
1.1 nicm 78: {
1.7 deraadt 79: FILE *f;
1.1 nicm 80: u_int n;
1.9 nicm 81: char *buf, *line, *cause;
1.1 nicm 82: size_t len;
83: struct cmd_list *cmdlist;
84: struct cmd_ctx ctx;
1.16 nicm 85: enum cmd_retval retval;
1.1 nicm 86:
87: if ((f = fopen(path, "rb")) == NULL) {
1.10 nicm 88: cfg_add_cause(causes, "%s: %s", path, strerror(errno));
1.19 ! nicm 89: return (CMD_RETURN_ERROR);
1.1 nicm 90: }
91: n = 0;
92:
1.18 nicm 93: cfg_references++;
94:
1.1 nicm 95: line = NULL;
1.16 nicm 96: retval = CMD_RETURN_NORMAL;
1.1 nicm 97: while ((buf = fgetln(f, &len))) {
98: if (buf[len - 1] == '\n')
1.13 nicm 99: len--;
100:
101: if (line != NULL)
102: line = xrealloc(line, 1, strlen(line) + len + 1);
1.1 nicm 103: else {
1.13 nicm 104: line = xmalloc(len + 1);
105: *line = '\0';
1.1 nicm 106: }
1.13 nicm 107:
108: /* Append buffer to line. strncat will terminate. */
109: strncat(line, buf, len);
1.1 nicm 110: n++;
111:
1.13 nicm 112: /* Continuation: get next line? */
113: len = strlen(line);
114: if (len > 0 && line[len - 1] == '\\') {
115: line[len - 1] = '\0';
1.14 nicm 116: /* Ignore escaped backslash at EOL. */
117: if (len > 1 && line[len - 2] != '\\')
118: continue;
1.13 nicm 119: }
120: buf = line;
121: line = NULL;
122:
1.9 nicm 123: if (cmd_string_parse(buf, &cmdlist, &cause) != 0) {
1.15 nicm 124: free(buf);
1.9 nicm 125: if (cause == NULL)
1.1 nicm 126: continue;
1.10 nicm 127: cfg_add_cause(causes, "%s: %u: %s", path, n, cause);
1.15 nicm 128: free(cause);
1.9 nicm 129: continue;
1.13 nicm 130: } else
1.15 nicm 131: free(buf);
1.1 nicm 132: if (cmdlist == NULL)
133: continue;
134: cfg_cause = NULL;
135:
1.6 nicm 136: if (ctxin == NULL) {
137: ctx.msgdata = NULL;
138: ctx.curclient = NULL;
139: ctx.cmdclient = NULL;
140: } else {
141: ctx.msgdata = ctxin->msgdata;
142: ctx.curclient = ctxin->curclient;
143: ctx.cmdclient = ctxin->cmdclient;
144: }
1.1 nicm 145:
146: ctx.error = cfg_error;
147: ctx.print = cfg_print;
148: ctx.info = cfg_print;
149:
150: cfg_cause = NULL;
1.16 nicm 151: switch (cmd_list_exec(cmdlist, &ctx)) {
152: case CMD_RETURN_YIELD:
153: if (retval != CMD_RETURN_ATTACH)
154: retval = CMD_RETURN_YIELD;
155: break;
156: case CMD_RETURN_ATTACH:
157: retval = CMD_RETURN_ATTACH;
158: break;
159: case CMD_RETURN_ERROR:
160: case CMD_RETURN_NORMAL:
161: break;
162: }
1.1 nicm 163: cmd_list_free(cmdlist);
164: if (cfg_cause != NULL) {
1.13 nicm 165: cfg_add_cause(
166: causes, "%s: %d: %s", path, n, cfg_cause);
1.15 nicm 167: free(cfg_cause);
1.1 nicm 168: }
169: }
1.13 nicm 170: if (line != NULL) {
171: cfg_add_cause(causes,
172: "%s: %d: line continuation at end of file", path, n);
1.15 nicm 173: free(line);
1.13 nicm 174: }
1.1 nicm 175: fclose(f);
1.18 nicm 176:
177: cfg_references--;
1.1 nicm 178:
1.12 nicm 179: return (retval);
1.17 nicm 180: }
181:
182: void
183: show_cfg_causes(struct session *s)
184: {
185: struct window_pane *wp;
186: char *cause;
187: u_int i;
188:
189: if (s == NULL || ARRAY_EMPTY(&cfg_causes))
190: return;
191:
192: wp = s->curw->window->active;
193:
194: window_pane_set_mode(wp, &window_copy_mode);
195: window_copy_init_for_output(wp);
196: for (i = 0; i < ARRAY_LENGTH(&cfg_causes); i++) {
197: cause = ARRAY_ITEM(&cfg_causes, i);
198: window_copy_add(wp, "%s", cause);
199: free(cause);
200: }
201: ARRAY_FREE(&cfg_causes);
1.1 nicm 202: }
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