source/libs/zziplib/zziplib-0.13.62/bins/zzcat.c

   1 /*
   2  *      Copyright (c) 2000,2001,2002 Guido Draheim <guidod@gmx.de>
   3  *      Use freely under the restrictions of the ZLIB License
   4  */
   5
   6 #include <zzip/zzip.h>
   7 #include <stdio.h>
   8 #include <string.h>
   9
  10 #ifndef O_BINARY
  11 #define O_BINARY 0
  12 #endif
  13
  14 static const char usage[] =
  15 {
  16     " zzcat <file>... \n"
  17     "  - prints the file to stdout, so you may want to redirect the output; \n"
  18     " the file can be a normal file or an inflated part of a zip-archive, \n"
  19     " to get 'README' from dist.zip you may write \n"
  20     "    zzcat dist/README \n"
  21 };
  22
  23 int
  24 main (int argc, char ** argv)
  25 {
  26     int argn;
  27
  28     if (argc <= 1 || ! strcmp (argv[1], "--help"))
  29     {
  30         printf (usage);
  31         return 0;
  32     }
  33     if (! strcmp (argv[1], "--version"))
  34     {
  35         printf (__FILE__" version "ZZIP_PACKAGE" "ZZIP_VERSION"\n");
  36         return 0;
  37     }
  38
  39     for (argn=1; argn < argc; argn++)
  40     {
  41         ZZIP_FILE* fp = zzip_open (argv[argn], O_RDONLY|O_BINARY);
  42
  43         if (! fp)
  44         {
  45             perror (argv[argn]);
  46             continue;
  47         }else{
  48             char buf[17];
  49             int n;
  50
  51             /* read chunks of 16 bytes into buf and print them to stdout */
  52             while (0 < (n = zzip_read(fp, buf, 16)))
  53             {
  54                 buf[n] = '\0';
  55 #             ifdef STDOUT_FILENO
  56                 write (STDOUT_FILENO, buf, n);
  57 #             else
  58                 fwrite (buf, 1, n, stdout);
  59 #             endif
  60             }
  61
  62             if (n == -1)
  63                 perror (argv[argn]);
  64         }
  65     }
  66
  67     return 0;
  68 }
  69
  70 /*
  71  * Local variables:
  72  * c-file-style: "stroustrup"
  73  * End:
  74  */