/[svn]/ircd-hybrid-7.2/src/sprintf_irc.c
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Contents of /ircd-hybrid-7.2/src/sprintf_irc.c

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Revision 34 - (show annotations)
Sun Oct 2 21:05:51 2005 UTC (14 years, 1 month ago) by lusky
File MIME type: text/x-chdr
File size: 21389 byte(s)
create 7.2 branch, we can move/rename it as needed.


1 /*
2 * ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd).
3 * sprintf_irc.c: Functions for printing to a string.
4 *
5 * Copyright (C) 2002 by the past and present ircd coders, and others.
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
20 * USA
21 *
22 * $Id$
23 */
24
25 #include "stdinc.h"
26 #include "sprintf_irc.h"
27 #include "irc_string.h"
28
29
30 static const char atoi_tab[4000] = {
31 '0','0','0',0, '0','0','1',0, '0','0','2',0, '0','0','3',0, '0','0','4',0,
32 '0','0','5',0, '0','0','6',0, '0','0','7',0, '0','0','8',0, '0','0','9',0,
33 '0','1','0',0, '0','1','1',0, '0','1','2',0, '0','1','3',0, '0','1','4',0,
34 '0','1','5',0, '0','1','6',0, '0','1','7',0, '0','1','8',0, '0','1','9',0,
35 '0','2','0',0, '0','2','1',0, '0','2','2',0, '0','2','3',0, '0','2','4',0,
36 '0','2','5',0, '0','2','6',0, '0','2','7',0, '0','2','8',0, '0','2','9',0,
37 '0','3','0',0, '0','3','1',0, '0','3','2',0, '0','3','3',0, '0','3','4',0,
38 '0','3','5',0, '0','3','6',0, '0','3','7',0, '0','3','8',0, '0','3','9',0,
39 '0','4','0',0, '0','4','1',0, '0','4','2',0, '0','4','3',0, '0','4','4',0,
40 '0','4','5',0, '0','4','6',0, '0','4','7',0, '0','4','8',0, '0','4','9',0,
41 '0','5','0',0, '0','5','1',0, '0','5','2',0, '0','5','3',0, '0','5','4',0,
42 '0','5','5',0, '0','5','6',0, '0','5','7',0, '0','5','8',0, '0','5','9',0,
43 '0','6','0',0, '0','6','1',0, '0','6','2',0, '0','6','3',0, '0','6','4',0,
44 '0','6','5',0, '0','6','6',0, '0','6','7',0, '0','6','8',0, '0','6','9',0,
45 '0','7','0',0, '0','7','1',0, '0','7','2',0, '0','7','3',0, '0','7','4',0,
46 '0','7','5',0, '0','7','6',0, '0','7','7',0, '0','7','8',0, '0','7','9',0,
47 '0','8','0',0, '0','8','1',0, '0','8','2',0, '0','8','3',0, '0','8','4',0,
48 '0','8','5',0, '0','8','6',0, '0','8','7',0, '0','8','8',0, '0','8','9',0,
49 '0','9','0',0, '0','9','1',0, '0','9','2',0, '0','9','3',0, '0','9','4',0,
50 '0','9','5',0, '0','9','6',0, '0','9','7',0, '0','9','8',0, '0','9','9',0,
51 '1','0','0',0, '1','0','1',0, '1','0','2',0, '1','0','3',0, '1','0','4',0,
52 '1','0','5',0, '1','0','6',0, '1','0','7',0, '1','0','8',0, '1','0','9',0,
53 '1','1','0',0, '1','1','1',0, '1','1','2',0, '1','1','3',0, '1','1','4',0,
54 '1','1','5',0, '1','1','6',0, '1','1','7',0, '1','1','8',0, '1','1','9',0,
55 '1','2','0',0, '1','2','1',0, '1','2','2',0, '1','2','3',0, '1','2','4',0,
56 '1','2','5',0, '1','2','6',0, '1','2','7',0, '1','2','8',0, '1','2','9',0,
57 '1','3','0',0, '1','3','1',0, '1','3','2',0, '1','3','3',0, '1','3','4',0,
58 '1','3','5',0, '1','3','6',0, '1','3','7',0, '1','3','8',0, '1','3','9',0,
59 '1','4','0',0, '1','4','1',0, '1','4','2',0, '1','4','3',0, '1','4','4',0,
60 '1','4','5',0, '1','4','6',0, '1','4','7',0, '1','4','8',0, '1','4','9',0,
61 '1','5','0',0, '1','5','1',0, '1','5','2',0, '1','5','3',0, '1','5','4',0,
62 '1','5','5',0, '1','5','6',0, '1','5','7',0, '1','5','8',0, '1','5','9',0,
63 '1','6','0',0, '1','6','1',0, '1','6','2',0, '1','6','3',0, '1','6','4',0,
64 '1','6','5',0, '1','6','6',0, '1','6','7',0, '1','6','8',0, '1','6','9',0,
65 '1','7','0',0, '1','7','1',0, '1','7','2',0, '1','7','3',0, '1','7','4',0,
66 '1','7','5',0, '1','7','6',0, '1','7','7',0, '1','7','8',0, '1','7','9',0,
67 '1','8','0',0, '1','8','1',0, '1','8','2',0, '1','8','3',0, '1','8','4',0,
68 '1','8','5',0, '1','8','6',0, '1','8','7',0, '1','8','8',0, '1','8','9',0,
69 '1','9','0',0, '1','9','1',0, '1','9','2',0, '1','9','3',0, '1','9','4',0,
70 '1','9','5',0, '1','9','6',0, '1','9','7',0, '1','9','8',0, '1','9','9',0,
71 '2','0','0',0, '2','0','1',0, '2','0','2',0, '2','0','3',0, '2','0','4',0,
72 '2','0','5',0, '2','0','6',0, '2','0','7',0, '2','0','8',0, '2','0','9',0,
73 '2','1','0',0, '2','1','1',0, '2','1','2',0, '2','1','3',0, '2','1','4',0,
74 '2','1','5',0, '2','1','6',0, '2','1','7',0, '2','1','8',0, '2','1','9',0,
75 '2','2','0',0, '2','2','1',0, '2','2','2',0, '2','2','3',0, '2','2','4',0,
76 '2','2','5',0, '2','2','6',0, '2','2','7',0, '2','2','8',0, '2','2','9',0,
77 '2','3','0',0, '2','3','1',0, '2','3','2',0, '2','3','3',0, '2','3','4',0,
78 '2','3','5',0, '2','3','6',0, '2','3','7',0, '2','3','8',0, '2','3','9',0,
79 '2','4','0',0, '2','4','1',0, '2','4','2',0, '2','4','3',0, '2','4','4',0,
80 '2','4','5',0, '2','4','6',0, '2','4','7',0, '2','4','8',0, '2','4','9',0,
81 '2','5','0',0, '2','5','1',0, '2','5','2',0, '2','5','3',0, '2','5','4',0,
82 '2','5','5',0, '2','5','6',0, '2','5','7',0, '2','5','8',0, '2','5','9',0,
83 '2','6','0',0, '2','6','1',0, '2','6','2',0, '2','6','3',0, '2','6','4',0,
84 '2','6','5',0, '2','6','6',0, '2','6','7',0, '2','6','8',0, '2','6','9',0,
85 '2','7','0',0, '2','7','1',0, '2','7','2',0, '2','7','3',0, '2','7','4',0,
86 '2','7','5',0, '2','7','6',0, '2','7','7',0, '2','7','8',0, '2','7','9',0,
87 '2','8','0',0, '2','8','1',0, '2','8','2',0, '2','8','3',0, '2','8','4',0,
88 '2','8','5',0, '2','8','6',0, '2','8','7',0, '2','8','8',0, '2','8','9',0,
89 '2','9','0',0, '2','9','1',0, '2','9','2',0, '2','9','3',0, '2','9','4',0,
90 '2','9','5',0, '2','9','6',0, '2','9','7',0, '2','9','8',0, '2','9','9',0,
91 '3','0','0',0, '3','0','1',0, '3','0','2',0, '3','0','3',0, '3','0','4',0,
92 '3','0','5',0, '3','0','6',0, '3','0','7',0, '3','0','8',0, '3','0','9',0,
93 '3','1','0',0, '3','1','1',0, '3','1','2',0, '3','1','3',0, '3','1','4',0,
94 '3','1','5',0, '3','1','6',0, '3','1','7',0, '3','1','8',0, '3','1','9',0,
95 '3','2','0',0, '3','2','1',0, '3','2','2',0, '3','2','3',0, '3','2','4',0,
96 '3','2','5',0, '3','2','6',0, '3','2','7',0, '3','2','8',0, '3','2','9',0,
97 '3','3','0',0, '3','3','1',0, '3','3','2',0, '3','3','3',0, '3','3','4',0,
98 '3','3','5',0, '3','3','6',0, '3','3','7',0, '3','3','8',0, '3','3','9',0,
99 '3','4','0',0, '3','4','1',0, '3','4','2',0, '3','4','3',0, '3','4','4',0,
100 '3','4','5',0, '3','4','6',0, '3','4','7',0, '3','4','8',0, '3','4','9',0,
101 '3','5','0',0, '3','5','1',0, '3','5','2',0, '3','5','3',0, '3','5','4',0,
102 '3','5','5',0, '3','5','6',0, '3','5','7',0, '3','5','8',0, '3','5','9',0,
103 '3','6','0',0, '3','6','1',0, '3','6','2',0, '3','6','3',0, '3','6','4',0,
104 '3','6','5',0, '3','6','6',0, '3','6','7',0, '3','6','8',0, '3','6','9',0,
105 '3','7','0',0, '3','7','1',0, '3','7','2',0, '3','7','3',0, '3','7','4',0,
106 '3','7','5',0, '3','7','6',0, '3','7','7',0, '3','7','8',0, '3','7','9',0,
107 '3','8','0',0, '3','8','1',0, '3','8','2',0, '3','8','3',0, '3','8','4',0,
108 '3','8','5',0, '3','8','6',0, '3','8','7',0, '3','8','8',0, '3','8','9',0,
109 '3','9','0',0, '3','9','1',0, '3','9','2',0, '3','9','3',0, '3','9','4',0,
110 '3','9','5',0, '3','9','6',0, '3','9','7',0, '3','9','8',0, '3','9','9',0,
111 '4','0','0',0, '4','0','1',0, '4','0','2',0, '4','0','3',0, '4','0','4',0,
112 '4','0','5',0, '4','0','6',0, '4','0','7',0, '4','0','8',0, '4','0','9',0,
113 '4','1','0',0, '4','1','1',0, '4','1','2',0, '4','1','3',0, '4','1','4',0,
114 '4','1','5',0, '4','1','6',0, '4','1','7',0, '4','1','8',0, '4','1','9',0,
115 '4','2','0',0, '4','2','1',0, '4','2','2',0, '4','2','3',0, '4','2','4',0,
116 '4','2','5',0, '4','2','6',0, '4','2','7',0, '4','2','8',0, '4','2','9',0,
117 '4','3','0',0, '4','3','1',0, '4','3','2',0, '4','3','3',0, '4','3','4',0,
118 '4','3','5',0, '4','3','6',0, '4','3','7',0, '4','3','8',0, '4','3','9',0,
119 '4','4','0',0, '4','4','1',0, '4','4','2',0, '4','4','3',0, '4','4','4',0,
120 '4','4','5',0, '4','4','6',0, '4','4','7',0, '4','4','8',0, '4','4','9',0,
121 '4','5','0',0, '4','5','1',0, '4','5','2',0, '4','5','3',0, '4','5','4',0,
122 '4','5','5',0, '4','5','6',0, '4','5','7',0, '4','5','8',0, '4','5','9',0,
123 '4','6','0',0, '4','6','1',0, '4','6','2',0, '4','6','3',0, '4','6','4',0,
124 '4','6','5',0, '4','6','6',0, '4','6','7',0, '4','6','8',0, '4','6','9',0,
125 '4','7','0',0, '4','7','1',0, '4','7','2',0, '4','7','3',0, '4','7','4',0,
126 '4','7','5',0, '4','7','6',0, '4','7','7',0, '4','7','8',0, '4','7','9',0,
127 '4','8','0',0, '4','8','1',0, '4','8','2',0, '4','8','3',0, '4','8','4',0,
128 '4','8','5',0, '4','8','6',0, '4','8','7',0, '4','8','8',0, '4','8','9',0,
129 '4','9','0',0, '4','9','1',0, '4','9','2',0, '4','9','3',0, '4','9','4',0,
130 '4','9','5',0, '4','9','6',0, '4','9','7',0, '4','9','8',0, '4','9','9',0,
131 '5','0','0',0, '5','0','1',0, '5','0','2',0, '5','0','3',0, '5','0','4',0,
132 '5','0','5',0, '5','0','6',0, '5','0','7',0, '5','0','8',0, '5','0','9',0,
133 '5','1','0',0, '5','1','1',0, '5','1','2',0, '5','1','3',0, '5','1','4',0,
134 '5','1','5',0, '5','1','6',0, '5','1','7',0, '5','1','8',0, '5','1','9',0,
135 '5','2','0',0, '5','2','1',0, '5','2','2',0, '5','2','3',0, '5','2','4',0,
136 '5','2','5',0, '5','2','6',0, '5','2','7',0, '5','2','8',0, '5','2','9',0,
137 '5','3','0',0, '5','3','1',0, '5','3','2',0, '5','3','3',0, '5','3','4',0,
138 '5','3','5',0, '5','3','6',0, '5','3','7',0, '5','3','8',0, '5','3','9',0,
139 '5','4','0',0, '5','4','1',0, '5','4','2',0, '5','4','3',0, '5','4','4',0,
140 '5','4','5',0, '5','4','6',0, '5','4','7',0, '5','4','8',0, '5','4','9',0,
141 '5','5','0',0, '5','5','1',0, '5','5','2',0, '5','5','3',0, '5','5','4',0,
142 '5','5','5',0, '5','5','6',0, '5','5','7',0, '5','5','8',0, '5','5','9',0,
143 '5','6','0',0, '5','6','1',0, '5','6','2',0, '5','6','3',0, '5','6','4',0,
144 '5','6','5',0, '5','6','6',0, '5','6','7',0, '5','6','8',0, '5','6','9',0,
145 '5','7','0',0, '5','7','1',0, '5','7','2',0, '5','7','3',0, '5','7','4',0,
146 '5','7','5',0, '5','7','6',0, '5','7','7',0, '5','7','8',0, '5','7','9',0,
147 '5','8','0',0, '5','8','1',0, '5','8','2',0, '5','8','3',0, '5','8','4',0,
148 '5','8','5',0, '5','8','6',0, '5','8','7',0, '5','8','8',0, '5','8','9',0,
149 '5','9','0',0, '5','9','1',0, '5','9','2',0, '5','9','3',0, '5','9','4',0,
150 '5','9','5',0, '5','9','6',0, '5','9','7',0, '5','9','8',0, '5','9','9',0,
151 '6','0','0',0, '6','0','1',0, '6','0','2',0, '6','0','3',0, '6','0','4',0,
152 '6','0','5',0, '6','0','6',0, '6','0','7',0, '6','0','8',0, '6','0','9',0,
153 '6','1','0',0, '6','1','1',0, '6','1','2',0, '6','1','3',0, '6','1','4',0,
154 '6','1','5',0, '6','1','6',0, '6','1','7',0, '6','1','8',0, '6','1','9',0,
155 '6','2','0',0, '6','2','1',0, '6','2','2',0, '6','2','3',0, '6','2','4',0,
156 '6','2','5',0, '6','2','6',0, '6','2','7',0, '6','2','8',0, '6','2','9',0,
157 '6','3','0',0, '6','3','1',0, '6','3','2',0, '6','3','3',0, '6','3','4',0,
158 '6','3','5',0, '6','3','6',0, '6','3','7',0, '6','3','8',0, '6','3','9',0,
159 '6','4','0',0, '6','4','1',0, '6','4','2',0, '6','4','3',0, '6','4','4',0,
160 '6','4','5',0, '6','4','6',0, '6','4','7',0, '6','4','8',0, '6','4','9',0,
161 '6','5','0',0, '6','5','1',0, '6','5','2',0, '6','5','3',0, '6','5','4',0,
162 '6','5','5',0, '6','5','6',0, '6','5','7',0, '6','5','8',0, '6','5','9',0,
163 '6','6','0',0, '6','6','1',0, '6','6','2',0, '6','6','3',0, '6','6','4',0,
164 '6','6','5',0, '6','6','6',0, '6','6','7',0, '6','6','8',0, '6','6','9',0,
165 '6','7','0',0, '6','7','1',0, '6','7','2',0, '6','7','3',0, '6','7','4',0,
166 '6','7','5',0, '6','7','6',0, '6','7','7',0, '6','7','8',0, '6','7','9',0,
167 '6','8','0',0, '6','8','1',0, '6','8','2',0, '6','8','3',0, '6','8','4',0,
168 '6','8','5',0, '6','8','6',0, '6','8','7',0, '6','8','8',0, '6','8','9',0,
169 '6','9','0',0, '6','9','1',0, '6','9','2',0, '6','9','3',0, '6','9','4',0,
170 '6','9','5',0, '6','9','6',0, '6','9','7',0, '6','9','8',0, '6','9','9',0,
171 '7','0','0',0, '7','0','1',0, '7','0','2',0, '7','0','3',0, '7','0','4',0,
172 '7','0','5',0, '7','0','6',0, '7','0','7',0, '7','0','8',0, '7','0','9',0,
173 '7','1','0',0, '7','1','1',0, '7','1','2',0, '7','1','3',0, '7','1','4',0,
174 '7','1','5',0, '7','1','6',0, '7','1','7',0, '7','1','8',0, '7','1','9',0,
175 '7','2','0',0, '7','2','1',0, '7','2','2',0, '7','2','3',0, '7','2','4',0,
176 '7','2','5',0, '7','2','6',0, '7','2','7',0, '7','2','8',0, '7','2','9',0,
177 '7','3','0',0, '7','3','1',0, '7','3','2',0, '7','3','3',0, '7','3','4',0,
178 '7','3','5',0, '7','3','6',0, '7','3','7',0, '7','3','8',0, '7','3','9',0,
179 '7','4','0',0, '7','4','1',0, '7','4','2',0, '7','4','3',0, '7','4','4',0,
180 '7','4','5',0, '7','4','6',0, '7','4','7',0, '7','4','8',0, '7','4','9',0,
181 '7','5','0',0, '7','5','1',0, '7','5','2',0, '7','5','3',0, '7','5','4',0,
182 '7','5','5',0, '7','5','6',0, '7','5','7',0, '7','5','8',0, '7','5','9',0,
183 '7','6','0',0, '7','6','1',0, '7','6','2',0, '7','6','3',0, '7','6','4',0,
184 '7','6','5',0, '7','6','6',0, '7','6','7',0, '7','6','8',0, '7','6','9',0,
185 '7','7','0',0, '7','7','1',0, '7','7','2',0, '7','7','3',0, '7','7','4',0,
186 '7','7','5',0, '7','7','6',0, '7','7','7',0, '7','7','8',0, '7','7','9',0,
187 '7','8','0',0, '7','8','1',0, '7','8','2',0, '7','8','3',0, '7','8','4',0,
188 '7','8','5',0, '7','8','6',0, '7','8','7',0, '7','8','8',0, '7','8','9',0,
189 '7','9','0',0, '7','9','1',0, '7','9','2',0, '7','9','3',0, '7','9','4',0,
190 '7','9','5',0, '7','9','6',0, '7','9','7',0, '7','9','8',0, '7','9','9',0,
191 '8','0','0',0, '8','0','1',0, '8','0','2',0, '8','0','3',0, '8','0','4',0,
192 '8','0','5',0, '8','0','6',0, '8','0','7',0, '8','0','8',0, '8','0','9',0,
193 '8','1','0',0, '8','1','1',0, '8','1','2',0, '8','1','3',0, '8','1','4',0,
194 '8','1','5',0, '8','1','6',0, '8','1','7',0, '8','1','8',0, '8','1','9',0,
195 '8','2','0',0, '8','2','1',0, '8','2','2',0, '8','2','3',0, '8','2','4',0,
196 '8','2','5',0, '8','2','6',0, '8','2','7',0, '8','2','8',0, '8','2','9',0,
197 '8','3','0',0, '8','3','1',0, '8','3','2',0, '8','3','3',0, '8','3','4',0,
198 '8','3','5',0, '8','3','6',0, '8','3','7',0, '8','3','8',0, '8','3','9',0,
199 '8','4','0',0, '8','4','1',0, '8','4','2',0, '8','4','3',0, '8','4','4',0,
200 '8','4','5',0, '8','4','6',0, '8','4','7',0, '8','4','8',0, '8','4','9',0,
201 '8','5','0',0, '8','5','1',0, '8','5','2',0, '8','5','3',0, '8','5','4',0,
202 '8','5','5',0, '8','5','6',0, '8','5','7',0, '8','5','8',0, '8','5','9',0,
203 '8','6','0',0, '8','6','1',0, '8','6','2',0, '8','6','3',0, '8','6','4',0,
204 '8','6','5',0, '8','6','6',0, '8','6','7',0, '8','6','8',0, '8','6','9',0,
205 '8','7','0',0, '8','7','1',0, '8','7','2',0, '8','7','3',0, '8','7','4',0,
206 '8','7','5',0, '8','7','6',0, '8','7','7',0, '8','7','8',0, '8','7','9',0,
207 '8','8','0',0, '8','8','1',0, '8','8','2',0, '8','8','3',0, '8','8','4',0,
208 '8','8','5',0, '8','8','6',0, '8','8','7',0, '8','8','8',0, '8','8','9',0,
209 '8','9','0',0, '8','9','1',0, '8','9','2',0, '8','9','3',0, '8','9','4',0,
210 '8','9','5',0, '8','9','6',0, '8','9','7',0, '8','9','8',0, '8','9','9',0,
211 '9','0','0',0, '9','0','1',0, '9','0','2',0, '9','0','3',0, '9','0','4',0,
212 '9','0','5',0, '9','0','6',0, '9','0','7',0, '9','0','8',0, '9','0','9',0,
213 '9','1','0',0, '9','1','1',0, '9','1','2',0, '9','1','3',0, '9','1','4',0,
214 '9','1','5',0, '9','1','6',0, '9','1','7',0, '9','1','8',0, '9','1','9',0,
215 '9','2','0',0, '9','2','1',0, '9','2','2',0, '9','2','3',0, '9','2','4',0,
216 '9','2','5',0, '9','2','6',0, '9','2','7',0, '9','2','8',0, '9','2','9',0,
217 '9','3','0',0, '9','3','1',0, '9','3','2',0, '9','3','3',0, '9','3','4',0,
218 '9','3','5',0, '9','3','6',0, '9','3','7',0, '9','3','8',0, '9','3','9',0,
219 '9','4','0',0, '9','4','1',0, '9','4','2',0, '9','4','3',0, '9','4','4',0,
220 '9','4','5',0, '9','4','6',0, '9','4','7',0, '9','4','8',0, '9','4','9',0,
221 '9','5','0',0, '9','5','1',0, '9','5','2',0, '9','5','3',0, '9','5','4',0,
222 '9','5','5',0, '9','5','6',0, '9','5','7',0, '9','5','8',0, '9','5','9',0,
223 '9','6','0',0, '9','6','1',0, '9','6','2',0, '9','6','3',0, '9','6','4',0,
224 '9','6','5',0, '9','6','6',0, '9','6','7',0, '9','6','8',0, '9','6','9',0,
225 '9','7','0',0, '9','7','1',0, '9','7','2',0, '9','7','3',0, '9','7','4',0,
226 '9','7','5',0, '9','7','6',0, '9','7','7',0, '9','7','8',0, '9','7','9',0,
227 '9','8','0',0, '9','8','1',0, '9','8','2',0, '9','8','3',0, '9','8','4',0,
228 '9','8','5',0, '9','8','6',0, '9','8','7',0, '9','8','8',0, '9','8','9',0,
229 '9','9','0',0, '9','9','1',0, '9','9','2',0, '9','9','3',0, '9','9','4',0,
230 '9','9','5',0, '9','9','6',0, '9','9','7',0, '9','9','8',0, '9','9','9',0
231 };
232
233 static char scratch_buffer[32];
234
235 /*
236 * sprintf_irc
237 *
238 * sprintf_irc is optimized for the formats: %c, %s, %lu, %d and %u.
239 * Where %lu actually equals %l09u (for printing time_t timestamps).
240 *
241 * sprintf_irc is NOT optimized for any other format and resorts to using
242 * the normal sprintf when it encounters a format it doesn't understand
243 * (including padding, width, precision etc).
244 *
245 * The following benchmark was measured on a PPro200 with linux 2.0.30,
246 * libc 5.4.28, compiled with gcc-2.7.2.1 with -O3.
247 *
248 * Format sprintf sprintf_irc Speed up factor
249 *
250 * "12345678901234567890" 3.385 us 0.859 us 3.94
251 * "%s", buffer (20 chars) 3.780 us 0.547 us 6.91
252 * "%c%c%c", c1, c2, c3 3.640 us 0.376 us 9.68
253 * "%lu", (time_t)t 5.851 us 0.842 us 6.95
254 *
255 * Less important:
256 * "%d", 31337 4.487 us 0.852 us 5.27
257 * "%u.%u.%u.%u", 9.069 us 2.431 us 3.73
258 *
259 * Not used:
260 * "%03d", 401 4.348 us
261 * "%N" 0.216 us 20.13
262 *
263 * --Run
264 */
265
266 int
267 vsprintf_irc(char *str, const char *format, va_list args)
268 {
269 char c;
270 int bytes = 0;
271
272 while ((c = *format++))
273 {
274 if (c == '%')
275 {
276 c = *format++; /* May never be '\0' ! */
277
278 if (c == 's')
279 {
280 const char *p1 = va_arg(args, const char *);
281 if ((*str = *p1))
282 {
283 ++bytes;
284 while ((*++str = *++p1))
285 ++bytes;
286 }
287
288 continue;
289 }
290
291 if (c == 'c')
292 {
293 *str++ = (char) va_arg(args, int);
294 ++bytes;
295
296 continue;
297 }
298
299 /*
300 * Prints time_t value in interval
301 * [ 100000000 , 4294967295 ]
302 * Actually prints like "%09lu"
303 */
304 if (c == 'l' && *format == 'u')
305 {
306 unsigned long v1, v2;
307 const char *ap;
308
309 ++format;
310 v1 = va_arg(args, unsigned long);
311 if (v1 == 0)
312 {
313 *str++ = '0';
314 ++bytes;
315 continue;
316 }
317 if (v1 > 999999999L)
318 {
319 v2 = v1 / 1000000000;
320 v1 -= v2 * 1000000000;
321 *str++ = '0' + v2;
322 ++bytes;
323 }
324
325 v2 = v1 / 1000000;
326 v1 -= v2 * 1000000;
327 ap = atoi_tab + (v2 << 2);
328 *str++ = *ap++;
329 *str++ = *ap++;
330 *str++ = *ap;
331 v2 = v1 / 1000;
332 v1 -= v2 * 1000;
333 ap = atoi_tab + (v2 << 2);
334 *str++ = *ap++;
335 *str++ = *ap++;
336 *str++ = *ap;
337 ap = atoi_tab + (v1 << 2);
338 *str++ = *ap++;
339 *str++ = *ap++;
340 *str++ = *ap;
341
342 bytes += 9;
343
344 continue;
345 }
346 if (c == 't')
347 {
348 unsigned int v1;
349
350 v1 = va_arg(args,int);
351
352 *str++ = (v1/10) + '0';
353 *str++ = v1%10 + '0';
354
355 bytes += 2;
356
357 continue;
358 }
359
360 if (c == 'd')
361 {
362 unsigned int v1, v2;
363 const char *ap;
364 char *s = &scratch_buffer[sizeof(scratch_buffer) - 2];
365
366 v1 = va_arg(args, int);
367 if ((int)v1 <= 0)
368 {
369 if (v1 == 0)
370 {
371 *str++ = '0';
372 ++bytes;
373 continue;
374 }
375 *str++ = '-';
376 ++bytes;
377 v1 = -v1;
378 }
379
380 do
381 {
382 v2 = v1 / 1000;
383 ap = atoi_tab + 2 + ((v1 - 1000 * v2) << 2);
384 *s-- = *ap--;
385 *s-- = *ap--;
386 *s-- = *ap;
387 }
388 while ((v1 = v2) > 0);
389
390 while ('0' == *++s);
391
392 *str = *s;
393 ++bytes;
394
395 while ((*++str = *++s))
396 ++bytes;
397
398 continue;
399 }
400
401 if (c == 'u')
402 {
403 unsigned int v1, v2;
404 const char *ap;
405 char *s = &scratch_buffer[sizeof(scratch_buffer) - 2];
406
407 v1 = va_arg(args, unsigned int);
408 if (v1 == 0)
409 {
410 *str++ = '0';
411 ++bytes;
412 continue;
413 }
414
415 do
416 {
417 v2 = v1 / 1000;
418 ap = atoi_tab + 2 + ((v1 - 1000 * v2) << 2);
419 *s-- = *ap--;
420 *s-- = *ap--;
421 *s-- = *ap;
422 }
423 while ((v1 = v2) > 0);
424
425 while ('0' == *++s);
426
427 *str = *s;
428 ++bytes;
429
430 while ((*++str = *++s))
431 ++bytes;
432
433 continue;
434 }
435
436 if (c != '%')
437 {
438 int ret;
439
440 format -= 2;
441 ret = vsprintf(str, format, args);
442 str += ret;
443 bytes += ret;
444
445 break;
446 }
447 }
448
449 *str++ = c;
450 ++bytes;
451 }
452
453 *str = '\0';
454
455 return(bytes);
456 } /* vsprintf_irc() */
457
458 int
459 ircsprintf(char *str, const char *format, ...)
460 {
461 va_list args;
462 int bytes;
463
464 va_start(args, format);
465
466 bytes = vsprintf_irc(str, format, args);
467
468 va_end(args);
469
470 return(bytes);
471 } /* ircsprintf() */
472

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