/**
* MIT/X Consortium License
*
* Copyright © 2015 Mattias Andrée <maandree@member.fsf.org>
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <assert.h>
#define t(...) do { if (__VA_ARGS__) goto fail; } while (0)
#define REALLOC(PTR, SIZE) \
do { \
void *new__; \
new__ = realloc(PTR, (SIZE) * sizeof(*(PTR))); \
t (new__ == NULL); \
(PTR) = new__; \
} while (0)
#define GROW(PTR, SIZE, DEFAULT) \
do { \
(SIZE) = (SIZE) ? ((SIZE) << 1) : (DEFAULT); \
REALLOC(PTR, SIZE); \
} while (0)
#define MAYBE_GROW(PTR, USED, SIZE, DEFAULT) \
do { \
if ((USED) == (SIZE)) \
GROW(PTR, SIZE, DEFAULT); \
} while (0)
#define GET_VERSION(VER, PATH) \
do { \
(VER) = strrchr((PATH), '='); \
assert((VER) && !strchr((VER), '/')); \
} while (0)
#define NEVER_REACHED \
do { \
assert(0); \
abort(); \
} while (0)
#define RETURN(R) \
for (int errno__ = errno, x__ = 0;; errno = errno__, x__++) \
if (x__) return (R); else
#define TEMP_NUL(P, ACTION) \
do { \
char P##__c = *(P); \
*(P) = '\0'; \
ACTION; \
*(P) = P##__c; \
} while (0)
