bin/cpdup/misc.c

   1 /*
   2  * MISC.C
   3  *
   4  * $DragonFly: src/bin/cpdup/misc.c,v 1.9 2008/03/22 18:09:16 dillon Exp $
   5  */
   6
   7 #include "cpdup.h"
   8
   9 void
  10 logstd(const char *ctl, ...)
  11 {
  12     va_list va;
  13
  14     va_start(va, ctl);
  15     vprintf(ctl, va);
  16     va_end(va);
  17 }
  18
  19 void
  20 logerr(const char *ctl, ...)
  21 {
  22     va_list va;
  23
  24     va_start(va, ctl);
  25     vfprintf(stderr, ctl, va);
  26     va_end(va);
  27 }
  28
  29 char *
  30 mprintf(const char *ctl, ...)
  31 {
  32     char *ptr;
  33     va_list va;
  34
  35     ptr = NULL;
  36
  37     va_start(va, ctl);
  38     if (vasprintf(&ptr, ctl, va) < 0)
  39         fatal("malloc failed");
  40     va_end(va);
  41     assert(ptr != NULL);
  42     return(ptr);
  43 }
  44
  45 char *
  46 fextract(FILE *fi, int n, int *pc, int skip)
  47 {
  48     int i;
  49     int c;
  50     int imax;
  51     char *s;
  52
  53     i = 0;
  54     c = *pc;
  55     imax = (n < 0) ? 64 : n + 1;
  56
  57     s = malloc(imax);
  58     if (s == NULL) {
  59         fprintf(stderr, "out of memory\n");
  60         exit(EXIT_FAILURE);
  61     }
  62
  63     while (c != EOF) {
  64         if (n == 0 || (n < 0 && (c == ' ' || c == '\n')))
  65             break;
  66
  67         s[i++] = c;
  68         if (i == imax) {
  69             imax += 64;
  70             s = realloc(s, imax);
  71             if (s == NULL) {
  72                 fprintf(stderr, "out of memory\n");
  73                 exit(EXIT_FAILURE);
  74             }
  75         }
  76         if (n > 0)
  77             --n;
  78         c = getc(fi);
  79     }
  80     if (c == skip && skip != EOF)
  81         c = getc(fi);
  82     *pc = c;
  83     s[i] = 0;
  84     return(s);
  85 }
  86
  87 void
  88 fatal(const char *ctl, ...)
  89 {
  90     va_list va;
  91
  92     if (ctl == NULL) {
  93         puts("cpdup [<options>] src [dest]");
  94         puts("    -v[vv]      verbose level (-vv is typical)\n"
  95              "    -u          use unbuffered output for -v[vv]\n"
  96              "    -I          display performance summary\n"
  97              "    -f          force update even if files look the same\n"
  98              "    -i0         do NOT confirm when removing something\n"
  99              "    -s0         disable safeties - allow files to overwrite directories\n"
 100              "    -q          quiet operation\n"
 101              "    -o          do not remove any files, just overwrite/add\n"
 102         );
 103         puts(
 104 #ifndef NOMD5
 105              "    -m          maintain/generate MD5 checkfile on source,\n"
 106              "                and compare with (optional) destination,\n"
 107              "                copying if the compare fails\n"
 108              "    -M file     -m+specify MD5 checkfile, else .MD5_CHECKSUMS\n"
 109              "                copy if md5 check fails\n"
 110              "    -H path     hardlink from path to target instead of copying\n"
 111              "                source to target, if source matches path.\n"
 112              "    -V          verify file contents even if they appear\n"
 113              "                to be the same.\n"
 114 #endif
 115              "    -x          use .cpignore as exclusion file\n"
 116              "    -X file     specify exclusion file\n"
 117              " Version 1.07 by Matt Dillon and Dima Ruban\n"
 118         );
 119         exit(0);
 120     } else {
 121         va_start(va, ctl);
 122         vprintf(ctl, va);
 123         va_end(va);
 124         puts("");
 125         exit(1);
 126     }
 127 }