utils.c

   1 /*
   2  * wiggle - apply rejected patches
   3  *
   4  * Copyright (C) 2003 Neil Brown <neilb@cse.unsw.edu.au>
   5  * Copyright (C) 2010-2013 Neil Brown <neilb@suse.de>
   6  * Copyright (C) 2014-2020 Neil Brown <neil@brown.name>
   7  *
   8  *
   9  *    This program is free software; you can redistribute it and/or modify
  10  *    it under the terms of the GNU General Public License as published by
  11  *    the Free Software Foundation; either version 2 of the License, or
  12  *    (at your option) any later version.
  13  *
  14  *    This program is distributed in the hope that it will be useful,
  15  *    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  *    GNU General Public License for more details.
  18  *
  19  *    You should have received a copy of the GNU General Public License
  20  *    along with this program.
  21  *
  22  *    Author: Neil Brown
  23  *    Email: <neil@brown.name>
  24  */
  25
  26 #include        "wiggle.h"
  27 #include        <unistd.h>
  28 #include        <stdlib.h>
  29 #include        <sys/stat.h>
  30
  31 char *wiggle_Cmd = "wiggle";
  32
  33 int wiggle_do_trace = 0;
  34
  35 void *wiggle_xmalloc(int size)
  36 {
  37         void *rv = malloc(size);
  38         if (size && !rv) {
  39                 char *msg = "Failed to allocate memory - aborting\n";
  40                 write(2, msg, strlen(msg));
  41                 exit(3);
  42         }
  43         return rv;
  44 }
  45
  46 void wiggle_printword(FILE *f, struct elmnt e)
  47 {
  48         if (e.start[0])
  49                 fprintf(f, "%.*s", e.plen + e.prefix,
  50                         e.start - e.prefix);
  51         else {
  52                 int a, b, c;
  53                 sscanf(e.start+1, "%d %d %d", &a, &b, &c);
  54                 fprintf(f, "*** %d,%d **** %d%s", b, c, a, e.start+18);
  55         }
  56 }
  57
  58 void wiggle_die(char *reason)
  59 {
  60         fprintf(stderr, "%s: fatal error: %s failure\n", wiggle_Cmd, reason);
  61         exit(3);
  62 }
  63
  64 void wiggle_check_dir(char *name, int fd)
  65 {
  66         struct stat st;
  67         if (fstat(fd, &st) != 0) {
  68                 fprintf(stderr, "%s: fatal: %s is strange\n", wiggle_Cmd, name);
  69                 exit(3);
  70         }
  71         if (S_ISDIR(st.st_mode)) {
  72                 fprintf(stderr, "%s: %s is a directory\n", wiggle_Cmd, name);
  73                 exit(3);
  74         }
  75 }
  76