commands/bzip2-1.0.3/dlltest.c

   1 /*
   2    minibz2
   3       libbz2.dll test program.
   4       by Yoshioka Tsuneo(QWF00133@nifty.ne.jp/tsuneo-y@is.aist-nara.ac.jp)
   5       This file is Public Domain.
   6       welcome any email to me.
   7
   8    usage: minibz2 [-d] [-{1,2,..9}] [[srcfilename] destfilename]
   9 */
  10
  11 #define BZ_IMPORT
  12 #include <stdio.h>
  13 #include <stdlib.h>
  14 #include "bzlib.h"
  15 #ifdef _WIN32
  16 #include <io.h>
  17 #endif
  18
  19
  20 #ifdef _WIN32
  21
  22 #define BZ2_LIBNAME "libbz2-1.0.2.DLL"
  23
  24 #include <windows.h>
  25 static int BZ2DLLLoaded = 0;
  26 static HINSTANCE BZ2DLLhLib;
  27 int BZ2DLLLoadLibrary(void)
  28 {
  29    HINSTANCE hLib;
  30
  31    if(BZ2DLLLoaded==1){return 0;}
  32    hLib=LoadLibrary(BZ2_LIBNAME);
  33    if(hLib == NULL){
  34       fprintf(stderr,"Can't load %s\n",BZ2_LIBNAME);
  35       return -1;
  36    }
  37    BZ2_bzlibVersion=GetProcAddress(hLib,"BZ2_bzlibVersion");
  38    BZ2_bzopen=GetProcAddress(hLib,"BZ2_bzopen");
  39    BZ2_bzdopen=GetProcAddress(hLib,"BZ2_bzdopen");
  40    BZ2_bzread=GetProcAddress(hLib,"BZ2_bzread");
  41    BZ2_bzwrite=GetProcAddress(hLib,"BZ2_bzwrite");
  42    BZ2_bzflush=GetProcAddress(hLib,"BZ2_bzflush");
  43    BZ2_bzclose=GetProcAddress(hLib,"BZ2_bzclose");
  44    BZ2_bzerror=GetProcAddress(hLib,"BZ2_bzerror");
  45
  46    if (!BZ2_bzlibVersion || !BZ2_bzopen || !BZ2_bzdopen
  47        || !BZ2_bzread || !BZ2_bzwrite || !BZ2_bzflush
  48        || !BZ2_bzclose || !BZ2_bzerror) {
  49       fprintf(stderr,"GetProcAddress failed.\n");
  50       return -1;
  51    }
  52    BZ2DLLLoaded=1;
  53    BZ2DLLhLib=hLib;
  54    return 0;
  55
  56 }
  57 int BZ2DLLFreeLibrary(void)
  58 {
  59    if(BZ2DLLLoaded==0){return 0;}
  60    FreeLibrary(BZ2DLLhLib);
  61    BZ2DLLLoaded=0;
  62 }
  63 #endif /* WIN32 */
  64
  65 void usage(void)
  66 {
  67    puts("usage: minibz2 [-d] [-{1,2,..9}] [[srcfilename] destfilename]");
  68 }
  69
  70 int main(int argc,char *argv[])
  71 {
  72    int decompress = 0;
  73    int level = 9;
  74    char *fn_r = NULL;
  75    char *fn_w = NULL;
  76
  77 #ifdef _WIN32
  78    if(BZ2DLLLoadLibrary()<0){
  79       fprintf(stderr,"Loading of %s failed.  Giving up.\n", BZ2_LIBNAME);
  80       exit(1);
  81    }
  82    printf("Loading of %s succeeded.  Library version is %s.\n",
  83           BZ2_LIBNAME, BZ2_bzlibVersion() );
  84 #endif
  85    while(++argv,--argc){
  86       if(**argv =='-' || **argv=='/'){
  87          char *p;
  88
  89          for(p=*argv+1;*p;p++){
  90             if(*p=='d'){
  91                decompress = 1;
  92             }else if('1'<=*p && *p<='9'){
  93                level = *p - '0';
  94             }else{
  95                usage();
  96                exit(1);
  97             }
  98          }
  99       }else{
 100          break;
 101       }
 102    }
 103    if(argc>=1){
 104       fn_r = *argv;
 105       argc--;argv++;
 106    }else{
 107       fn_r = NULL;
 108    }
 109    if(argc>=1){
 110       fn_w = *argv;
 111       argc--;argv++;
 112    }else{
 113       fn_w = NULL;
 114    }
 115    {
 116       int len;
 117       char buff[0x1000];
 118       char mode[10];
 119
 120       if(decompress){
 121          BZFILE *BZ2fp_r = NULL;
 122          FILE *fp_w = NULL;
 123
 124          if(fn_w){
 125             if((fp_w = fopen(fn_w,"wb"))==NULL){
 126                printf("can't open [%s]\n",fn_w);
 127                perror("reason:");
 128                exit(1);
 129             }
 130          }else{
 131             fp_w = stdout;
 132          }
 133          if((fn_r == NULL && (BZ2fp_r = BZ2_bzdopen(fileno(stdin),"rb"))==NULL)
 134             || (fn_r != NULL && (BZ2fp_r = BZ2_bzopen(fn_r,"rb"))==NULL)){
 135             printf("can't bz2openstream\n");
 136             exit(1);
 137          }
 138          while((len=BZ2_bzread(BZ2fp_r,buff,0x1000))>0){
 139             fwrite(buff,1,len,fp_w);
 140          }
 141          BZ2_bzclose(BZ2fp_r);
 142          if(fp_w != stdout) fclose(fp_w);
 143       }else{
 144          BZFILE *BZ2fp_w = NULL;
 145          FILE *fp_r = NULL;
 146
 147          if(fn_r){
 148             if((fp_r = fopen(fn_r,"rb"))==NULL){
 149                printf("can't open [%s]\n",fn_r);
 150                perror("reason:");
 151                exit(1);
 152             }
 153          }else{
 154             fp_r = stdin;
 155          }
 156          mode[0]='w';
 157          mode[1] = '0' + level;
 158          mode[2] = '\0';
 159
 160          if((fn_w == NULL && (BZ2fp_w = BZ2_bzdopen(fileno(stdout),mode))==NULL)
 161             || (fn_w !=NULL && (BZ2fp_w = BZ2_bzopen(fn_w,mode))==NULL)){
 162             printf("can't bz2openstream\n");
 163             exit(1);
 164          }
 165          while((len=fread(buff,1,0x1000,fp_r))>0){
 166             BZ2_bzwrite(BZ2fp_w,buff,len);
 167          }
 168          BZ2_bzclose(BZ2fp_w);
 169          if(fp_r!=stdin)fclose(fp_r);
 170       }
 171    }
 172 #ifdef _WIN32
 173    BZ2DLLFreeLibrary();
 174 #endif
 175    return 0;
 176 }