Annotation of src/usr.bin/tmux/options.c, Revision 1.6
1.6 ! nicm 1: /* $OpenBSD: options.c,v 1.5 2009/09/22 12:38:10 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:
21: #include <stdarg.h>
22: #include <string.h>
23:
24: #include "tmux.h"
25:
26: /*
27: * Option handling; each option has a name, type and value and is stored in
28: * a splay tree.
29: */
30:
31: SPLAY_GENERATE(options_tree, options_entry, entry, options_cmp);
32:
33: int
34: options_cmp(struct options_entry *o1, struct options_entry *o2)
35: {
36: return (strcmp(o1->name, o2->name));
37: }
38:
39: void
40: options_init(struct options *oo, struct options *parent)
41: {
42: SPLAY_INIT(&oo->tree);
43: oo->parent = parent;
44: }
45:
46: void
47: options_free(struct options *oo)
48: {
49: struct options_entry *o;
50:
51: while (!SPLAY_EMPTY(&oo->tree)) {
52: o = SPLAY_ROOT(&oo->tree);
53: SPLAY_REMOVE(options_tree, &oo->tree, o);
54: xfree(o->name);
55: if (o->type == OPTIONS_STRING)
1.3 nicm 56: xfree(o->str);
1.1 nicm 57: xfree(o);
58: }
59: }
60:
61: struct options_entry *
62: options_find1(struct options *oo, const char *name)
63: {
64: struct options_entry p;
65:
66: p.name = (char *) name;
67: return (SPLAY_FIND(options_tree, &oo->tree, &p));
68: }
69:
70: struct options_entry *
71: options_find(struct options *oo, const char *name)
72: {
73: struct options_entry *o, p;
74:
75: p.name = (char *) name;
76: o = SPLAY_FIND(options_tree, &oo->tree, &p);
77: while (o == NULL) {
78: oo = oo->parent;
79: if (oo == NULL)
80: break;
81: o = SPLAY_FIND(options_tree, &oo->tree, &p);
82: }
83: return (o);
84: }
85:
1.2 nicm 86: void
1.1 nicm 87: options_remove(struct options *oo, const char *name)
88: {
89: struct options_entry *o;
90:
91: if ((o = options_find1(oo, name)) == NULL)
1.2 nicm 92: return;
1.1 nicm 93:
94: SPLAY_REMOVE(options_tree, &oo->tree, o);
95: xfree(o->name);
96: if (o->type == OPTIONS_STRING)
1.3 nicm 97: xfree(o->str);
1.1 nicm 98: xfree(o);
99: }
100:
1.4 nicm 101: struct options_entry *printflike3
1.1 nicm 102: options_set_string(struct options *oo, const char *name, const char *fmt, ...)
103: {
104: struct options_entry *o;
105: va_list ap;
106:
107: if ((o = options_find1(oo, name)) == NULL) {
108: o = xmalloc(sizeof *o);
109: o->name = xstrdup(name);
110: SPLAY_INSERT(options_tree, &oo->tree, o);
111: } else if (o->type == OPTIONS_STRING)
1.3 nicm 112: xfree(o->str);
1.1 nicm 113:
114: va_start(ap, fmt);
115: o->type = OPTIONS_STRING;
1.3 nicm 116: xvasprintf(&o->str, fmt, ap);
1.1 nicm 117: va_end(ap);
1.4 nicm 118: return (o);
1.1 nicm 119: }
120:
121: char *
122: options_get_string(struct options *oo, const char *name)
123: {
124: struct options_entry *o;
125:
126: if ((o = options_find(oo, name)) == NULL)
127: fatalx("missing option");
128: if (o->type != OPTIONS_STRING)
129: fatalx("option not a string");
1.3 nicm 130: return (o->str);
1.1 nicm 131: }
132:
1.4 nicm 133: struct options_entry *
1.1 nicm 134: options_set_number(struct options *oo, const char *name, long long value)
135: {
136: struct options_entry *o;
137:
138: if ((o = options_find1(oo, name)) == NULL) {
139: o = xmalloc(sizeof *o);
140: o->name = xstrdup(name);
141: SPLAY_INSERT(options_tree, &oo->tree, o);
142: } else if (o->type == OPTIONS_STRING)
1.3 nicm 143: xfree(o->str);
1.1 nicm 144:
145: o->type = OPTIONS_NUMBER;
1.3 nicm 146: o->num = value;
1.4 nicm 147: return (o);
1.1 nicm 148: }
149:
150: long long
151: options_get_number(struct options *oo, const char *name)
152: {
153: struct options_entry *o;
154:
155: if ((o = options_find(oo, name)) == NULL)
156: fatalx("missing option");
157: if (o->type != OPTIONS_NUMBER)
158: fatalx("option not a number");
1.3 nicm 159: return (o->num);
1.1 nicm 160: }
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