unix4lyfe git - darkstat-debian/blob - str.h

   1 /* darkstat 3
   2  * copyright (c) 2001-2014 Emil Mikulic.
   3  *
   4  * str.h: string buffer with pool-based reallocation
   5  *
   6  * Permission to use, copy, modify, and distribute this file 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 USE, DATA OR PROFITS, WHETHER IN AN
  15  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  16  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  17  */
  18 #ifndef __DARKSTAT_STR_H
  19 #define __DARKSTAT_STR_H
  20
  21 #include "cdefs.h"
  22
  23 #include <sys/types.h>
  24 #include <stdarg.h>
  25 #include <stdint.h>  /* for uint64_t */
  26
  27 typedef long long   signed int qd;   /* as in appendf("%qd") */
  28 typedef long long unsigned int qu;   /* as in appendf("%qu") */
  29 typedef long long unsigned int lld;  /* as in printf("%lld") */
  30 typedef long long unsigned int llu;  /* as in printf("%llu") */
  31
  32 _Static_assert(sizeof(qd) == sizeof(int64_t), "qd must be int64_t sized");
  33 _Static_assert(sizeof(qu) == sizeof(uint64_t), "qu must be uint64_t sized");
  34 _Static_assert(sizeof(lld) == sizeof(int64_t), "lld must be int64_t sized");
  35 _Static_assert(sizeof(llu) == sizeof(uint64_t), "llu must be uint64_t sized");
  36
  37 /* Note: the contents are 8-bit clean and not zero terminated! */
  38
  39 struct str;
  40
  41 struct str *str_make(void);
  42 void str_free(struct str *s);
  43 void str_extract(struct str *buf, size_t *len, char **str);
  44 void str_appendn(struct str *buf, const char *s, const size_t len);
  45 void str_appendstr(struct str *buf, const struct str *s);
  46
  47 #ifdef __GNUC__
  48 /* amusing efficiency hack */
  49 # include <string.h>
  50 # define str_append(buf, s) \
  51    str_appendn(buf, s, \
  52                (__builtin_constant_p(s) ? sizeof(s)-1 : strlen(s)) )
  53 #else
  54 void str_append(struct str *buf, const char *s);
  55 #endif
  56
  57 size_t xvasprintf(char **result, const char *format, va_list va)
  58    _printflike_(2, 0);
  59 size_t xasprintf(char **result, const char *format, ...) _printflike_(2, 3);
  60 void str_vappendf(struct str *s, const char *format, va_list va)
  61    _printflike_(2, 0);
  62 void str_appendf(struct str *s, const char *format, ...) _printflike_(2, 3);
  63
  64 struct str *length_of_time(const time_t t);
  65 ssize_t str_write(const struct str * const buf, const int fd);
  66 size_t str_len(const struct str * const buf);
  67
  68 #endif  /* __DARKSTAT_STR_H */
  69 /* vim:set ts=3 sw=3 tw=78 expandtab: */