Annotation of src/usr.bin/tmux/cfg.c, Revision 1.26
1.26 ! nicm 1: /* $OpenBSD: cfg.c,v 1.25 2013/03/22 15:49:55 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:
1.21 nicm 22: #include <ctype.h>
1.1 nicm 23: #include <errno.h>
24: #include <stdio.h>
1.15 nicm 25: #include <stdlib.h>
1.1 nicm 26: #include <string.h>
27:
28: #include "tmux.h"
29:
30: /*
31: * Config file parser. Pretty quick and simple, each line is parsed into a
32: * argv array and executed as a command.
33: */
34:
35: void printflike2 cfg_print(struct cmd_ctx *, const char *, ...);
36: void printflike2 cfg_error(struct cmd_ctx *, const char *, ...);
37:
1.18 nicm 38: char *cfg_cause;
39: int cfg_finished;
40: int cfg_references;
41: struct causelist cfg_causes;
1.1 nicm 42:
43: void printflike2
44: cfg_print(unused struct cmd_ctx *ctx, unused const char *fmt, ...)
45: {
46: }
47:
48: void printflike2
49: cfg_error(unused struct cmd_ctx *ctx, const char *fmt, ...)
50: {
51: va_list ap;
52:
53: va_start(ap, fmt);
54: xvasprintf(&cfg_cause, fmt, ap);
55: va_end(ap);
56: }
57:
1.10 nicm 58: void printflike2
59: cfg_add_cause(struct causelist *causes, const char *fmt, ...)
1.9 nicm 60: {
61: char *cause;
62: va_list ap;
63:
64: va_start(ap, fmt);
65: xvasprintf(&cause, fmt, ap);
66: va_end(ap);
67:
1.10 nicm 68: ARRAY_ADD(causes, cause);
1.9 nicm 69: }
70:
71: /*
72: * Load configuration file. Returns -1 for an error with a list of messages in
1.11 nicm 73: * causes. Note that causes must be initialised by the caller!
1.9 nicm 74: */
1.19 nicm 75: enum cmd_retval
1.26 ! nicm 76: load_cfg(const char *path, struct cmd_ctx *ctx, struct causelist *causes)
1.1 nicm 77: {
1.7 deraadt 78: FILE *f;
1.1 nicm 79: u_int n;
1.21 nicm 80: char *buf, *copy, *line, *cause;
81: size_t len, oldlen;
1.1 nicm 82: struct cmd_list *cmdlist;
1.16 nicm 83: enum cmd_retval retval;
1.1 nicm 84:
85: if ((f = fopen(path, "rb")) == NULL) {
1.10 nicm 86: cfg_add_cause(causes, "%s: %s", path, strerror(errno));
1.19 nicm 87: return (CMD_RETURN_ERROR);
1.1 nicm 88: }
89:
1.18 nicm 90: cfg_references++;
91:
1.26 ! nicm 92: if (ctx != NULL)
! 93: cmd_ref_ctx(ctx);
! 94: else {
! 95: ctx = cmd_get_ctx();
! 96: ctx->error = cfg_error;
! 97: ctx->print = cfg_print;
! 98: ctx->info = cfg_print;
1.25 nicm 99: }
100:
1.20 nicm 101: n = 0;
1.1 nicm 102: line = NULL;
1.16 nicm 103: retval = CMD_RETURN_NORMAL;
1.1 nicm 104: while ((buf = fgetln(f, &len))) {
1.21 nicm 105: /* Trim \n. */
1.1 nicm 106: if (buf[len - 1] == '\n')
1.13 nicm 107: len--;
1.24 nicm 108: log_debug("%s: %.*s", path, (int)len, buf);
1.13 nicm 109:
1.20 nicm 110: /* Current line is the continuation of the previous one. */
111: if (line != NULL) {
1.21 nicm 112: oldlen = strlen(line);
113: line = xrealloc(line, 1, oldlen + len + 1);
1.20 nicm 114: } else {
1.21 nicm 115: oldlen = 0;
116: line = xmalloc(len + 1);
1.1 nicm 117: }
1.13 nicm 118:
1.20 nicm 119: /* Append current line to the previous. */
1.21 nicm 120: memcpy(line + oldlen, buf, len);
121: line[oldlen + len] = '\0';
1.1 nicm 122: n++;
123:
1.13 nicm 124: /* Continuation: get next line? */
125: len = strlen(line);
126: if (len > 0 && line[len - 1] == '\\') {
127: line[len - 1] = '\0';
1.20 nicm 128:
1.14 nicm 129: /* Ignore escaped backslash at EOL. */
130: if (len > 1 && line[len - 2] != '\\')
131: continue;
1.13 nicm 132: }
1.21 nicm 133: copy = line;
1.13 nicm 134: line = NULL;
135:
1.21 nicm 136: /* Skip empty lines. */
137: buf = copy;
138: while (isspace((u_char)*buf))
139: buf++;
1.22 nicm 140: if (*buf == '\0') {
141: free(copy);
1.21 nicm 142: continue;
1.22 nicm 143: }
1.21 nicm 144:
1.9 nicm 145: if (cmd_string_parse(buf, &cmdlist, &cause) != 0) {
1.21 nicm 146: free(copy);
1.9 nicm 147: if (cause == NULL)
1.1 nicm 148: continue;
1.10 nicm 149: cfg_add_cause(causes, "%s: %u: %s", path, n, cause);
1.15 nicm 150: free(cause);
1.9 nicm 151: continue;
1.20 nicm 152: }
1.21 nicm 153: free(copy);
1.1 nicm 154: if (cmdlist == NULL)
155: continue;
156:
157: cfg_cause = NULL;
1.25 nicm 158: switch (cmd_list_exec(cmdlist, ctx)) {
1.16 nicm 159: case CMD_RETURN_YIELD:
160: if (retval != CMD_RETURN_ATTACH)
161: retval = CMD_RETURN_YIELD;
162: break;
163: case CMD_RETURN_ATTACH:
164: retval = CMD_RETURN_ATTACH;
165: break;
166: case CMD_RETURN_ERROR:
167: case CMD_RETURN_NORMAL:
168: break;
169: }
1.1 nicm 170: cmd_list_free(cmdlist);
171: if (cfg_cause != NULL) {
1.20 nicm 172: cfg_add_cause(causes, "%s: %d: %s", path, n, cfg_cause);
1.15 nicm 173: free(cfg_cause);
1.1 nicm 174: }
175: }
1.13 nicm 176: if (line != NULL) {
177: cfg_add_cause(causes,
178: "%s: %d: line continuation at end of file", path, n);
1.15 nicm 179: free(line);
1.13 nicm 180: }
1.1 nicm 181: fclose(f);
1.25 nicm 182:
183: cmd_free_ctx(ctx);
1.18 nicm 184:
185: cfg_references--;
1.1 nicm 186:
1.12 nicm 187: return (retval);
1.17 nicm 188: }
189:
190: void
191: show_cfg_causes(struct session *s)
192: {
193: struct window_pane *wp;
194: char *cause;
195: u_int i;
196:
197: if (s == NULL || ARRAY_EMPTY(&cfg_causes))
198: return;
199:
200: wp = s->curw->window->active;
201:
202: window_pane_set_mode(wp, &window_copy_mode);
203: window_copy_init_for_output(wp);
204: for (i = 0; i < ARRAY_LENGTH(&cfg_causes); i++) {
205: cause = ARRAY_ITEM(&cfg_causes, i);
206: window_copy_add(wp, "%s", cause);
207: free(cause);
208: }
209: ARRAY_FREE(&cfg_causes);
1.1 nicm 210: }
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