source/libs/zziplib/zziplib-0.13.62/test/zzipself.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 <stdio.h>
   7 #include <stdlib.h>
   8 #include <zzip/zzip.h>
   9
  10 #ifndef O_BINARY
  11 #define O_BINARY 0
  12 #endif
  13
  14 static const char usage[] =
  15 {
  16     " zzipself <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     " however in this case the zip-archive happens to be the executed\n"
  20     " binary itself, as if this program is a self-extract header of a zip. \n"
  21     "    zzipself README # same as # zzcat zzipself/README \n"
  22 };
  23
  24 int
  25 main (int argc, char ** argv)
  26 {
  27         int status = 0;
  28     int argn;
  29     if (argc <= 1)
  30     {
  31         printf (usage);
  32         exit (0);
  33     }
  34
  35     for (argn=1; argn < argc; argn++)
  36     {
  37         /* ZZIP_FILE* fp = zzip_fopen (argv[0]+"/"+argv[argn], "rbi"); */
  38         /* .... = zzip_open (argv[0]+"/"+argv[argn], O_RDONLY|O_BINARY,
  39          *                   ZZIP_CASELESS|ZZIP_ONLYZIP, ext, 0); */
  40
  41         static const char* ext[] = { "", ".exe", ".EXE", 0 };
  42         ZZIP_FILE* fp;
  43         ZZIP_DIR* zip = zzip_opendir_ext_io (argv[0],
  44                                      ZZIP_CASELESS|ZZIP_ONLYZIP, ext, 0);
  45
  46         if (! zip) { perror(argv[0]); break; }
  47
  48         fp = zzip_file_open (zip, argv[argn], ZZIP_CASELESS);
  49
  50         if (! fp)
  51         {
  52             perror (argv[argn]);
  53             continue;
  54         }else{
  55             char buf[17];
  56             int n;
  57
  58             /* read chunks of 16 bytes into buf and print them to stdout */
  59             while (0 < (n = zzip_read(fp, buf, 16)))
  60             {
  61                 buf[n] = '\0';
  62 #             ifdef STDOUT_FILENO
  63                 write (STDOUT_FILENO, buf, n);
  64 #             else
  65                 fwrite (buf, 1, n, stdout);
  66 #             endif
  67             }
  68
  69             if (n == -1)
  70                         {
  71                 perror (argv[argn]);
  72                                 status ++;
  73                         }
  74         }
  75
  76         zzip_file_close (fp);
  77         zzip_closedir (zip);
  78     }
  79
  80     return status;
  81 }
  82
  83 /*
  84  * Local variables:
  85  * c-file-style: "stroustrup"
  86  * End:
  87  */