Annotation of src/usr.bin/tmux/options.c, Revision 1.1
1.1 ! nicm 1: /* $OpenBSD$ */
! 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)
! 56: xfree(o->value.string);
! 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:
! 86: int
! 87: options_remove(struct options *oo, const char *name)
! 88: {
! 89: struct options_entry *o;
! 90:
! 91: if ((o = options_find1(oo, name)) == NULL)
! 92: return (-1);
! 93:
! 94: SPLAY_REMOVE(options_tree, &oo->tree, o);
! 95: xfree(o->name);
! 96: if (o->type == OPTIONS_STRING)
! 97: xfree(o->value.string);
! 98: xfree(o);
! 99: return (0);
! 100: }
! 101:
! 102: void printflike3
! 103: options_set_string(struct options *oo, const char *name, const char *fmt, ...)
! 104: {
! 105: struct options_entry *o;
! 106: va_list ap;
! 107:
! 108: if ((o = options_find1(oo, name)) == NULL) {
! 109: o = xmalloc(sizeof *o);
! 110: o->name = xstrdup(name);
! 111: SPLAY_INSERT(options_tree, &oo->tree, o);
! 112: } else if (o->type == OPTIONS_STRING)
! 113: xfree(o->value.string);
! 114:
! 115: va_start(ap, fmt);
! 116: o->type = OPTIONS_STRING;
! 117: xvasprintf(&o->value.string, fmt, ap);
! 118: va_end(ap);
! 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");
! 130: return (o->value.string);
! 131: }
! 132:
! 133: void
! 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)
! 143: xfree(o->value.string);
! 144:
! 145: o->type = OPTIONS_NUMBER;
! 146: o->value.number = value;
! 147:
! 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");
! 159: return (o->value.number);
! 160: }
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