text: /*
     minizip.c
     Version 1.1, February 14h, 2010
     sample part of the MiniZip project - ( http://www.winimage.com/zLibDll/minizip.html )
  
           Copyright (C) 1998-2010 Gilles Vollant (minizip) ( http://www.winimage.com/zLibDll/minizip.html )
  
           Modifications of Unzip for Zip64
           Copyright (C) 2007-2008 Even Rouault
  
           Modifications for Zip64 support on both zip and unzip
           Copyright (C) 2009-2010 Mathias Svensson ( http://result42.com )
  */
  
  #if (!defined(_WIN32)) && (!defined(WIN32)) && (!defined(__APPLE__)) && (!defined(__ANDROID_API__))
          #ifndef __USE_FILE_OFFSET64
                  #define __USE_FILE_OFFSET64
          #endif
          #ifndef __USE_LARGEFILE64
                  #define __USE_LARGEFILE64
          #endif
          #ifndef _LARGEFILE64_SOURCE
                  #define _LARGEFILE64_SOURCE
          #endif
          #ifndef _FILE_OFFSET_BIT
                  #define _FILE_OFFSET_BIT 64
          #endif
  #endif
  
  #if defined(__APPLE__) || defined(__Fuchsia__) || defined(__ANDROID_API__)
  // In darwin and perhaps other BSD variants off_t is a 64 bit value, hence no need for specific 64 bit functions
  #define FOPEN_FUNC(filename, mode) fopen(filename, mode)
  #define FTELLO_FUNC(stream) ftello(stream)
  #define FSEEKO_FUNC(stream, offset, origin) fseeko(stream, offset, origin)
  #else
  #define FOPEN_FUNC(filename, mode) fopen64(filename, mode)
  #define FTELLO_FUNC(stream) ftello64(stream)
  #define FSEEKO_FUNC(stream, offset, origin) fseeko64(stream, offset, origin)
  #endif
  
  
  
  #include <stdio.h>
  #include <stdlib.h>
  #include <string.h>
  #include <time.h>
  #include <errno.h>
  #include <fcntl.h>
  
  #ifdef _WIN32
  # include <direct.h>
  # include <io.h>
  #else
  # include <unistd.h>
  # include <utime.h>
  # include <sys/types.h>
  # include <sys/stat.h>
  #endif
  
  #include "zip.h"
  
  #ifdef _WIN32
          #define USEWIN32IOAPI
          #include "iowin32.h"
  #endif
  
  
  
  #define WRITEBUFFERSIZE (16384)
  #define MAXFILENAME (256)
  
  #ifdef _WIN32
  uLong filetime(f, tmzip, dt)
      char *f;                /* name of file to get info on */
      tm_zip *tmzip;             /* return value: access, modific. and creation times */
      uLong *dt;             /* dostime */
  {
    int ret = 0;
    {
        FILETIME ftLocal;
        HANDLE hFind;
        WIN32_FIND_DATAA ff32;
  
        hFind = FindFirstFileA(f,&ff32);
        if (hFind != INVALID_HANDLE_VALUE)
        {
          FileTimeToLocalFileTime(&(ff32.ftLastWriteTime),&ftLocal);
          FileTimeToDosDateTime(&ftLocal,((LPWORD)dt)+1,((LPWORD)dt)+0);
          FindClose(hFind);
          ret = 1;
        }
    }
    return ret;
  }
  #else
  #if defined(unix) || defined(__APPLE__) || defined(__Fuchsia__) || defined(__ANDROID_API__)
  uLong filetime(f, tmzip, dt)
      char *f;               /* name of file to get info on */
      tm_zip *tmzip;         /* return value: access, modific. and creation times */
      uLong *dt;             /* dostime */
  {
    int ret=0;
    struct stat s;        /* results of stat() */
    struct tm* filedate;
    time_t tm_t=0;
  
    if (strcmp(f,"-")!=0)
    {
      char name[MAXFILENAME+1];
      int len = strlen(f);
      if (len > MAXFILENAME)
        len = MAXFILENAME;
  
      strncpy(name, f,MAXFILENAME-1);
      /* strncpy doesnt append the trailing NULL, of the string is too long. */
      name[ MAXFILENAME ] = '\0';
  
      if (name[len - 1] == '/')
        name[len - 1] = '\0';
      /* not all systems allow stat'ing a file with / appended */
      if (stat(name,&s)==0)
      {
        tm_t = s.st_mtime;
        ret = 1;
      }
    }
    filedate = localtime(&tm_t);
  
    tmzip->tm_sec  = filedate->tm_sec;
    tmzip->tm_min  = filedate->tm_min;
    tmzip->tm_hour = filedate->tm_hour;
    tmzip->tm_mday = filedate->tm_mday;
    tmzip->tm_mon  = filedate->tm_mon ;
    tmzip->tm_year = filedate->tm_year;
  
    return ret;
  }
  #else
  uLong filetime(f, tmzip, dt)
      char *f;                /* name of file to get info on */
      tm_zip *tmzip;             /* return value: access, modific. and creation times */
      uLong *dt;             /* dostime */
  {
      return 0;
  }
  #endif
  #endif
  
  
  
  
  int check_exist_file(filename)
      const char* filename;
  {
      FILE* ftestexist;
      int ret = 1;
      ftestexist = FOPEN_FUNC(filename,"rb");
      if (ftestexist==NULL)
          ret = 0;
      else
          fclose(ftestexist);
      return ret;
  }
  
  void do_banner()
  {
      printf("MiniZip 1.1, demo of zLib + MiniZip64 package, written by Gilles Vollant\n");
      printf("more info on MiniZip at http://www.winimage.com/zLibDll/minizip.html\n\n");
  }
  
  void do_help()
  {
      printf("Usage : minizip [-o] [-a] [-0 to -9] [-p password] [-j] file.zip [files_to_add]\n\n" \
             "  -o  Overwrite existing file.zip\n" \
             "  -a  Append to existing file.zip\n" \
             "  -0  Store only\n" \
             "  -1  Compress faster\n" \
             "  -9  Compress better\n\n" \
             "  -j  exclude path. store only the file name.\n\n");
  }
  
  /* calculate the CRC32 of a file,
     because to encrypt a file, we need known the CRC32 of the file before */
  int getFileCrc(const char* filenameinzip,void*buf,unsigned long size_buf,unsigned long* result_crc)
  {
     unsigned long calculate_crc=0;
     int err=ZIP_OK;
     FILE * fin = FOPEN_FUNC(filenameinzip,"rb");
  
     unsigned long size_read = 0;
     unsigned long total_read = 0;
     if (fin==NULL)
     {
         err = ZIP_ERRNO;
     }
  
      if (err == ZIP_OK)
          do
          {
              err = ZIP_OK;
              size_read = (int)fread(buf,1,size_buf,fin);
              if (size_read < size_buf)
                  if (feof(fin)==0)
              {
                  printf("error in reading %s\n",filenameinzip);
                  err = ZIP_ERRNO;
              }
  
              if (size_read>0)
                  calculate_crc = crc32(calculate_crc,buf,size_read);
              total_read += size_read;
  
          } while ((err == ZIP_OK) && (size_read>0));
  
      if (fin)
          fclose(fin);
  
      *result_crc=calculate_crc;
      printf("file %s crc %lx\n", filenameinzip, calculate_crc);
      return err;
  }
  
  int isLargeFile(const char* filename)
  {
    int largeFile = 0;
    ZPOS64_T pos = 0;
    FILE* pFile = FOPEN_FUNC(filename, "rb");
  
    if(pFile != NULL)
    {
      int n = FSEEKO_FUNC(pFile, 0, SEEK_END);
      pos = FTELLO_FUNC(pFile);
  
                  printf("File : %s is %lld bytes\n", filename, pos);
  
      if(pos >= 0xffffffff)
       largeFile = 1;
  
                  fclose(pFile);
    }
  
   return largeFile;
  }
  
  int main(argc,argv)
      int argc;
      char *argv[];
  {
      int i;
      int opt_overwrite=0;
      int opt_compress_level=Z_DEFAULT_COMPRESSION;
      int opt_exclude_path=0;
      int zipfilenamearg = 0;
      char filename_try[MAXFILENAME+16];
      int zipok;
      int err=0;
      int size_buf=0;
      void* buf=NULL;
      const char* password=NULL;
  
  
      do_banner();
      if (argc==1)
      {
          do_help();
          return 0;
      }
      else
      {
          for (i=1;i<argc;i++)
          {
              if ((*argv[i])=='-')
              {
                  const char *p=argv[i]+1;
  
                  while ((*p)!='\0')
                  {
                      char c=*(p++);;
                      if ((c=='o') || (c=='O'))
                          opt_overwrite = 1;
                      if ((c=='a') || (c=='A'))
                          opt_overwrite = 2;
                      if ((c>='0') && (c<='9'))
                          opt_compress_level = c-'0';
                      if ((c=='j') || (c=='J'))
                          opt_exclude_path = 1;
  
                      if (((c=='p') || (c=='P')) && (i+1<argc))
                      {
                          password=argv[i+1];
                          i++;
                      }
                  }
              }
              else
              {
                  if (zipfilenamearg == 0)
                  {
                      zipfilenamearg = i ;
                  }
              }
          }
      }
  
      size_buf = WRITEBUFFERSIZE;
      buf = (void*)malloc(size_buf);
      if (buf==NULL)
      {
          printf("Error allocating memory\n");
          return ZIP_INTERNALERROR;
      }
  
      if (zipfilenamearg==0)
      {
          zipok=0;
      }
      else
      {
          int i,len;
          int dot_found=0;
  
          zipok = 1 ;
          strncpy(filename_try, argv[zipfilenamearg],MAXFILENAME-1);
          /* strncpy doesnt append the trailing NULL, of the string is too long. */
          filename_try[ MAXFILENAME ] = '\0';
  
          len=(int)strlen(filename_try);
          for (i=0;i<len;i++)
              if (filename_try[i]=='.')
                  dot_found=1;
  
          if (dot_found==0)
              strcat(filename_try,".zip");
  
          if (opt_overwrite==2)
          {
              /* if the file don't exist, we not append file */
              if (check_exist_file(filename_try)==0)
                  opt_overwrite=1;
          }
          else
          if (opt_overwrite==0)
              if (check_exist_file(filename_try)!=0)
              {
                  char rep=0;
                  do
                  {
                      char answer[128];
                      int ret;
                      printf("The file %s exists. Overwrite ? [y]es, [n]o, [a]ppend : ",filename_try);
                      ret = scanf("%1s",answer);
                      if (ret != 1)
                      {
                         exit(EXIT_FAILURE);
                      }
                      rep = answer[0] ;
                      if ((rep>='a') && (rep<='z'))
                          rep -= 0x20;
                  }
                  while ((rep!='Y') && (rep!='N') && (rep!='A'));
                  if (rep=='N')
                      zipok = 0;
                  if (rep=='A')
                      opt_overwrite = 2;
              }
      }
  
      if (zipok==1)
      {
          zipFile zf;
          int errclose;
  #        ifdef USEWIN32IOAPI
          zlib_filefunc64_def ffunc;
          fill_win32_filefunc64A(&ffunc);
          zf = zipOpen2_64(filename_try,(opt_overwrite==2) ? 2 : 0,NULL,&ffunc);
  #        else
          zf = zipOpen64(filename_try,(opt_overwrite==2) ? 2 : 0);
  #        endif
  
          if (zf == NULL)
          {
              printf("error opening %s\n",filename_try);
              err= ZIP_ERRNO;
          }
          else
              printf("creating %s\n",filename_try);
  
          for (i=zipfilenamearg+1;(i<argc) && (err==ZIP_OK);i++)
          {
              if (!((((*(argv[i]))=='-') || ((*(argv[i]))=='/')) &&
                    ((argv[i][1]=='o') || (argv[i][1]=='O') ||
                     (argv[i][1]=='a') || (argv[i][1]=='A') ||
                     (argv[i][1]=='p') || (argv[i][1]=='P') ||
                     ((argv[i][1]>='0') || (argv[i][1]<='9'))) &&
                    (strlen(argv[i]) == 2)))
              {
                  FILE * fin;
                  int size_read;
                  const char* filenameinzip = argv[i];
                  const char *savefilenameinzip;
                  zip_fileinfo zi;
                  unsigned long crcFile=0;
                  int zip64 = 0;
  
                  zi.tmz_date.tm_sec = zi.tmz_date.tm_min = zi.tmz_date.tm_hour =
                  zi.tmz_date.tm_mday = zi.tmz_date.tm_mon = zi.tmz_date.tm_year = 0;
                  zi.dosDate = 0;
                  zi.internal_fa = 0;
                  zi.external_fa = 0;
                  filetime(filenameinzip,&zi.tmz_date,&zi.dosDate);
  
  /*
                  err = zipOpenNewFileInZip(zf,filenameinzip,&zi,
                                   NULL,0,NULL,0,NULL / * comment * /,
                                   (opt_compress_level != 0) ? Z_DEFLATED : 0,
                                   opt_compress_level);
  */
                  if ((password != NULL) && (err==ZIP_OK))
                      err = getFileCrc(filenameinzip,buf,size_buf,&crcFile);
  
                  zip64 = isLargeFile(filenameinzip);
  
                                                           /* The path name saved, should not include a leading slash. */
                 /*if it did, windows/xp and dynazip couldn't read the zip file. */
                   savefilenameinzip = filenameinzip;
                   while( savefilenameinzip[0] == '\\' || savefilenameinzip[0] == '/' )
                   {
                       savefilenameinzip++;
                   }
  
                   /*should the zip file contain any path at all?*/
                   if( opt_exclude_path )
                   {
                       const char *tmpptr;
                       const char *lastslash = 0;
                       for( tmpptr = savefilenameinzip; *tmpptr; tmpptr++)
                       {
                           if( *tmpptr == '\\' || *tmpptr == '/')
                           {
                               lastslash = tmpptr;
                           }
                       }
                       if( lastslash != NULL )
                       {
                           savefilenameinzip = lastslash+1; // base filename follows last slash.
                       }
                   }
  
                   /**/
                  err = zipOpenNewFileInZip3_64(zf,savefilenameinzip,&zi,
                                   NULL,0,NULL,0,NULL /* comment*/,
                                   (opt_compress_level != 0) ? Z_DEFLATED : 0,
                                   opt_compress_level,0,
                                   /* -MAX_WBITS, DEF_MEM_LEVEL, Z_DEFAULT_STRATEGY, */
                                   -MAX_WBITS, DEF_MEM_LEVEL, Z_DEFAULT_STRATEGY,
                                   password,crcFile, zip64);
  
                  if (err != ZIP_OK)
                      printf("error in opening %s in zipfile\n",filenameinzip);
                  else
                  {
                      fin = FOPEN_FUNC(filenameinzip,"rb");
                      if (fin==NULL)
                      {
                          err=ZIP_ERRNO;
                          printf("error in opening %s for reading\n",filenameinzip);
                      }
                  }
  
                  if (err == ZIP_OK)
                      do
                      {
                          err = ZIP_OK;
                          size_read = (int)fread(buf,1,size_buf,fin);
                          if (size_read < size_buf)
                              if (feof(fin)==0)
                          {
                              printf("error in reading %s\n",filenameinzip);
                              err = ZIP_ERRNO;
                          }
  
                          if (size_read>0)
                          {
                              err = zipWriteInFileInZip (zf,buf,size_read);
                              if (err<0)
                              {
                                  printf("error in writing %s in the zipfile\n",
                                                   filenameinzip);
                              }
  
                          }
                      } while ((err == ZIP_OK) && (size_read>0));
  
                  if (fin)
                      fclose(fin);
  
                  if (err<0)
                      err=ZIP_ERRNO;
                  else
                  {
                      err = zipCloseFileInZip(zf);
                      if (err!=ZIP_OK)
                          printf("error in closing %s in the zipfile\n",
                                      filenameinzip);
                  }
              }
          }
          errclose = zipClose(zf,NULL);
          if (errclose != ZIP_OK)
              printf("error in closing %s\n",filename_try);
      }
      else
      {
         do_help();
      }
  
      free(buf);
      return 0;
  }
  