extra/scripts/unifdef.h

   1 /*
   2  * Copyright (c) 2012 - 2013 Tony Finch <dot@dotat.at>
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  * 1. Redistributions of source code must retain the above copyright
   8  *    notice, this list of conditions and the following disclaimer.
   9  * 2. Redistributions in binary form must reproduce the above copyright
  10  *    notice, this list of conditions and the following disclaimer in the
  11  *    documentation and/or other materials provided with the distribution.
  12  *
  13  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  14  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  16  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  17  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  18  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  19  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  20  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  21  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  22  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  23  * SUCH DAMAGE.
  24  */
  25
  26 #include <sys/stat.h>
  27
  28 #include <ctype.h>
  29 #include <errno.h>
  30 #include <stdarg.h>
  31 #include <stdbool.h>
  32 #include <stdio.h>
  33 #include <stdlib.h>
  34 #include <string.h>
  35 #include <unistd.h>
  36
  37 /* Avoid err.h since this are non-standard BSD extensions */
  38 #define vwarnx(fmt, args)   ({ fprintf(stderr, "unifdef: "); vfprintf(stderr, fmt, args); fprintf(stderr, "\n"); })
  39 #define warnx(fmt, args...) fprintf(stderr, "unifdef: " fmt "\n", ## args)
  40 #define warn(fmt, args...)  warnx(fmt ": %s", ## args, strerror(errno))
  41 #define errx(exit_code, fmt, args...) ({ warnx(fmt, ## args); exit(exit_code); })
  42 #define err(exit_code, fmt, args...)  errx(exit_code, fmt ": %s", ## args, strerror(errno))
  43
  44 /* portability stubs */
  45
  46 #define fbinmode(fp) (fp)
  47
  48 #define replace(old,new) rename(old,new)
  49
  50 static FILE *
  51 mktempmode(char *tmp, int mode)
  52 {
  53         int fd = mkstemp(tmp);
  54         if (fd < 0) return (NULL);
  55         fchmod(fd, mode & (S_IRWXU|S_IRWXG|S_IRWXO));
  56         return (fdopen(fd, "wb"));
  57 }