1 /* Copyright (c) 2008 The Board of Trustees of The Leland Stanford
4 * We are making the OpenFlow specification and associated documentation
5 * (Software) available for public use and benefit with the expectation
6 * that others will use, modify and enhance the Software and contribute
7 * those enhancements back to the community. However, since we would
8 * like to make the Software available for broadest use, with as few
9 * restrictions as possible permission is hereby granted, free of
10 * charge, to any person obtaining a copy of this Software to deal in
11 * the Software under the copyrights without restriction, including
12 * without limitation the rights to use, copy, modify, merge, publish,
13 * distribute, sublicense, and/or sell copies of the Software, and to
14 * permit persons to whom the Software is furnished to do so, subject to
15 * the following conditions:
17 * The above copyright notice and this permission notice shall be
18 * included in all copies or substantial portions of the Software.
20 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
21 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
22 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
23 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
24 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
25 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
26 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
29 * The name and trademarks of copyright holder(s) may NOT be used in
30 * advertising or publicity pertaining to the Software or any
31 * derivatives without specific, written prior permission.
34 #include "dynamic-string.h"
40 ds_init(struct ds *ds)
48 ds_reserve(struct ds *ds, size_t min_length)
50 if (min_length > ds->allocated || !ds->string) {
51 ds->allocated += MAX(min_length, ds->allocated);
52 ds->allocated = MAX(8, ds->allocated);
53 ds->string = xrealloc(ds->string, ds->allocated + 1);
58 ds_put_format(struct ds *ds, const char *format, ...)
62 va_start(args, format);
63 ds_put_format_valist(ds, format, args);
68 ds_put_format_valist(struct ds *ds, const char *format, va_list args_)
75 available = ds->string ? ds->allocated - ds->length + 1 : 0;
76 needed = vsnprintf(&ds->string[ds->length], available, format, args);
79 if (needed < available) {
84 ds_reserve(ds, ds->length + needed);
87 available = ds->allocated - ds->length + 1;
88 needed = vsnprintf(&ds->string[ds->length], available, format, args);
91 assert(needed < available);
97 ds_cstr(struct ds *ds)
101 ds->string[0] = '\0';
107 ds_destroy(struct ds *ds)