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508 lines
12 KiB
508 lines
12 KiB
#include <stdio.h> |
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#include <stdlib.h> |
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#include <string.h> |
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#include <time.h> |
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#include <errno.h> |
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#include <fcntl.h> |
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#ifdef unix |
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# include <unistd.h> |
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# include <utime.h> |
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#else |
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# include <direct.h> |
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# include <io.h> |
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#endif |
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#include "unzip.h" |
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#define CASESENSITIVITY (0) |
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#define WRITEBUFFERSIZE (8192) |
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/* |
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mini unzip, demo of unzip package |
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usage : |
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Usage : miniunz [-exvlo] file.zip [file_to_extract] |
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list the file in the zipfile, and print the content of FILE_ID.ZIP or README.TXT |
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if it exists |
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*/ |
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/* change_file_date : change the date/time of a file |
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filename : the filename of the file where date/time must be modified |
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dosdate : the new date at the MSDos format (4 bytes) |
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tmu_date : the SAME new date at the tm_unz format */ |
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void change_file_date(filename,dosdate,tmu_date) |
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const char *filename; |
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uLong dosdate; |
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tm_unz tmu_date; |
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{ |
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#ifdef WIN32 |
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HANDLE hFile; |
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FILETIME ftm,ftLocal,ftCreate,ftLastAcc,ftLastWrite; |
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hFile = CreateFile(filename,GENERIC_READ | GENERIC_WRITE, |
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0,NULL,OPEN_EXISTING,0,NULL); |
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GetFileTime(hFile,&ftCreate,&ftLastAcc,&ftLastWrite); |
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DosDateTimeToFileTime((WORD)(dosdate>>16),(WORD)dosdate,&ftLocal); |
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LocalFileTimeToFileTime(&ftLocal,&ftm); |
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SetFileTime(hFile,&ftm,&ftLastAcc,&ftm); |
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CloseHandle(hFile); |
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#else |
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#ifdef unix |
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struct utimbuf ut; |
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struct tm newdate; |
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newdate.tm_sec = tmu_date.tm_sec; |
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newdate.tm_min=tmu_date.tm_min; |
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newdate.tm_hour=tmu_date.tm_hour; |
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newdate.tm_mday=tmu_date.tm_mday; |
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newdate.tm_mon=tmu_date.tm_mon; |
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if (tmu_date.tm_year > 1900) |
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newdate.tm_year=tmu_date.tm_year - 1900; |
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else |
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newdate.tm_year=tmu_date.tm_year ; |
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newdate.tm_isdst=-1; |
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ut.actime=ut.modtime=mktime(&newdate); |
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utime(filename,&ut); |
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#endif |
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#endif |
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} |
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/* mymkdir and change_file_date are not 100 % portable |
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As I don't know well Unix, I wait feedback for the unix portion */ |
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int mymkdir(dirname) |
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const char* dirname; |
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{ |
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int ret=0; |
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#ifdef WIN32 |
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ret = mkdir(dirname); |
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#else |
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#ifdef unix |
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ret = mkdir (dirname,0775); |
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#endif |
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#endif |
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return ret; |
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} |
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int makedir (newdir) |
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char *newdir; |
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{ |
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char *buffer ; |
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char *p; |
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int len = strlen(newdir); |
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if (len <= 0) |
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return 0; |
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buffer = (char*)malloc(len+1); |
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strcpy(buffer,newdir); |
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if (buffer[len-1] == '/') { |
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buffer[len-1] = '\0'; |
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} |
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if (mymkdir(buffer) == 0) |
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{ |
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free(buffer); |
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return 1; |
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} |
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p = buffer+1; |
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while (1) |
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{ |
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char hold; |
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while(*p && *p != '\\' && *p != '/') |
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p++; |
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hold = *p; |
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*p = 0; |
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if ((mymkdir(buffer) == -1) && (errno == ENOENT)) |
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{ |
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printf("couldn't create directory %s\n",buffer); |
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free(buffer); |
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return 0; |
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} |
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if (hold == 0) |
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break; |
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*p++ = hold; |
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} |
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free(buffer); |
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return 1; |
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} |
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void do_banner() |
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{ |
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printf("MiniUnz 0.15, demo of zLib + Unz package written by Gilles Vollant\n"); |
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printf("more info at http://wwww.winimage/zLibDll/unzip.htm\n\n"); |
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} |
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void do_help() |
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{ |
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printf("Usage : miniunz [-exvlo] file.zip [file_to_extract]\n\n") ; |
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} |
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int do_list(uf) |
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unzFile uf; |
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{ |
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uLong i; |
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unz_global_info gi; |
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int err; |
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err = unzGetGlobalInfo (uf,&gi); |
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if (err!=UNZ_OK) |
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printf("error %d with zipfile in unzGetGlobalInfo \n",err); |
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printf(" Length Method Size Ratio Date Time CRC-32 Name\n"); |
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printf(" ------ ------ ---- ----- ---- ---- ------ ----\n"); |
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for (i=0;i<gi.number_entry;i++) |
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{ |
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char filename_inzip[256]; |
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unz_file_info file_info; |
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uLong ratio=0; |
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const char *string_method; |
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err = unzGetCurrentFileInfo(uf,&file_info,filename_inzip,sizeof(filename_inzip),NULL,0,NULL,0); |
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if (err!=UNZ_OK) |
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{ |
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printf("error %d with zipfile in unzGetCurrentFileInfo\n",err); |
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break; |
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} |
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if (file_info.uncompressed_size>0) |
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ratio = (file_info.compressed_size*100)/file_info.uncompressed_size; |
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if (file_info.compression_method==0) |
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string_method="Stored"; |
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else |
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if (file_info.compression_method==Z_DEFLATED) |
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{ |
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uInt iLevel=(uInt)((file_info.flag & 0x6)/2); |
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if (iLevel==0) |
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string_method="Defl:N"; |
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else if (iLevel==1) |
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string_method="Defl:X"; |
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else if ((iLevel==2) || (iLevel==3)) |
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string_method="Defl:F"; /* 2:fast , 3 : extra fast*/ |
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} |
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else |
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string_method="Unkn. "; |
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printf("%7lu %6s %7lu %3lu%% %2.2lu-%2.2lu-%2.2lu %2.2lu:%2.2lu %8.8lx %s\n", |
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file_info.uncompressed_size,string_method,file_info.compressed_size, |
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ratio, |
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(uLong)file_info.tmu_date.tm_mon + 1, |
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(uLong)file_info.tmu_date.tm_mday, |
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(uLong)file_info.tmu_date.tm_year % 100, |
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(uLong)file_info.tmu_date.tm_hour,(uLong)file_info.tmu_date.tm_min, |
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(uLong)file_info.crc,filename_inzip); |
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if ((i+1)<gi.number_entry) |
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{ |
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err = unzGoToNextFile(uf); |
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if (err!=UNZ_OK) |
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{ |
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printf("error %d with zipfile in unzGoToNextFile\n",err); |
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break; |
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} |
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} |
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} |
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return 0; |
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} |
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int do_extract_currentfile(uf,popt_extract_without_path,popt_overwrite) |
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unzFile uf; |
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const int* popt_extract_without_path; |
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int* popt_overwrite; |
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{ |
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char filename_inzip[256]; |
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char* filename_withoutpath; |
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char* p; |
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int err=UNZ_OK; |
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FILE *fout=NULL; |
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void* buf; |
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uInt size_buf; |
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unz_file_info file_info; |
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uLong ratio=0; |
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err = unzGetCurrentFileInfo(uf,&file_info,filename_inzip,sizeof(filename_inzip),NULL,0,NULL,0); |
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if (err!=UNZ_OK) |
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{ |
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printf("error %d with zipfile in unzGetCurrentFileInfo\n",err); |
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return err; |
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} |
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size_buf = WRITEBUFFERSIZE; |
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buf = (void*)malloc(size_buf); |
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if (buf==NULL) |
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{ |
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printf("Error allocating memory\n"); |
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return UNZ_INTERNALERROR; |
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} |
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p = filename_withoutpath = filename_inzip; |
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while ((*p) != '\0') |
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{ |
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if (((*p)=='/') || ((*p)=='\\')) |
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filename_withoutpath = p+1; |
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p++; |
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} |
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if ((*filename_withoutpath)=='\0') |
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{ |
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if ((*popt_extract_without_path)==0) |
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{ |
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printf("creating directory: %s\n",filename_inzip); |
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mymkdir(filename_inzip); |
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} |
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} |
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else |
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{ |
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const char* write_filename; |
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int skip=0; |
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if ((*popt_extract_without_path)==0) |
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write_filename = filename_inzip; |
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else |
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write_filename = filename_withoutpath; |
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err = unzOpenCurrentFile(uf); |
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if (err!=UNZ_OK) |
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{ |
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printf("error %d with zipfile in unzOpenCurrentFile\n",err); |
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} |
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if (((*popt_overwrite)==0) && (err==UNZ_OK)) |
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{ |
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char rep; |
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FILE* ftestexist; |
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ftestexist = fopen(write_filename,"rb"); |
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if (ftestexist!=NULL) |
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{ |
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fclose(ftestexist); |
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do |
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{ |
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char answer[128]; |
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printf("The file %s exist. Overwrite ? [y]es, [n]o, [A]ll: ",write_filename); |
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scanf("%1s",answer); |
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rep = answer[0] ; |
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if ((rep>='a') && (rep<='z')) |
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rep -= 0x20; |
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} |
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while ((rep!='Y') && (rep!='N') && (rep!='A')); |
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} |
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if (rep == 'N') |
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skip = 1; |
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if (rep == 'A') |
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*popt_overwrite=1; |
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} |
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if ((skip==0) && (err==UNZ_OK)) |
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{ |
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fout=fopen(write_filename,"wb"); |
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/* some zipfile don't contain directory alone before file */ |
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if ((fout==NULL) && ((*popt_extract_without_path)==0) && |
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(filename_withoutpath!=(char*)filename_inzip)) |
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{ |
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char c=*(filename_withoutpath-1); |
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*(filename_withoutpath-1)='\0'; |
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makedir(write_filename); |
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*(filename_withoutpath-1)=c; |
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fout=fopen(write_filename,"wb"); |
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} |
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if (fout==NULL) |
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{ |
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printf("error opening %s\n",write_filename); |
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} |
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} |
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if (fout!=NULL) |
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{ |
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printf(" extracting: %s\n",write_filename); |
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do |
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{ |
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err = unzReadCurrentFile(uf,buf,size_buf); |
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if (err<0) |
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{ |
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printf("error %d with zipfile in unzReadCurrentFile\n",err); |
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break; |
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} |
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if (err>0) |
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if (fwrite(buf,err,1,fout)!=1) |
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{ |
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printf("error in writing extracted file\n"); |
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err=UNZ_ERRNO; |
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break; |
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} |
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} |
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while (err>0); |
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fclose(fout); |
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if (err==0) |
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change_file_date(write_filename,file_info.dosDate, |
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file_info.tmu_date); |
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} |
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if (err==UNZ_OK) |
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{ |
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err = unzCloseCurrentFile (uf); |
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if (err!=UNZ_OK) |
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{ |
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printf("error %d with zipfile in unzCloseCurrentFile\n",err); |
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} |
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} |
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else |
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unzCloseCurrentFile(uf); /* don't lose the error */ |
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} |
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free(buf); |
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return err; |
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} |
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int do_extract(uf,opt_extract_without_path,opt_overwrite) |
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unzFile uf; |
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int opt_extract_without_path; |
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int opt_overwrite; |
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{ |
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uLong i; |
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unz_global_info gi; |
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int err; |
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FILE* fout=NULL; |
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err = unzGetGlobalInfo (uf,&gi); |
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if (err!=UNZ_OK) |
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printf("error %d with zipfile in unzGetGlobalInfo \n",err); |
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for (i=0;i<gi.number_entry;i++) |
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{ |
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if (do_extract_currentfile(uf,&opt_extract_without_path, |
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&opt_overwrite) != UNZ_OK) |
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break; |
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if ((i+1)<gi.number_entry) |
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{ |
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err = unzGoToNextFile(uf); |
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if (err!=UNZ_OK) |
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{ |
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printf("error %d with zipfile in unzGoToNextFile\n",err); |
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break; |
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} |
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} |
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} |
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return 0; |
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} |
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int do_extract_onefile(uf,filename,opt_extract_without_path,opt_overwrite) |
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unzFile uf; |
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const char* filename; |
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int opt_extract_without_path; |
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int opt_overwrite; |
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{ |
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int err = UNZ_OK; |
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if (unzLocateFile(uf,filename,CASESENSITIVITY)!=UNZ_OK) |
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{ |
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printf("file %s not found in the zipfile\n",filename); |
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return 2; |
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} |
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if (do_extract_currentfile(uf,&opt_extract_without_path, |
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&opt_overwrite) == UNZ_OK) |
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return 0; |
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else |
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return 1; |
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} |
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int main(argc,argv) |
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int argc; |
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char *argv[]; |
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{ |
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const char *zipfilename=NULL; |
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const char *filename_to_extract=NULL; |
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int i; |
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int opt_do_list=0; |
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int opt_do_extract=1; |
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int opt_do_extract_withoutpath=0; |
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int opt_overwrite=0; |
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char filename_try[512]; |
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unzFile uf=NULL; |
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do_banner(); |
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if (argc==1) |
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{ |
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do_help(); |
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exit(0); |
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} |
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else |
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{ |
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for (i=1;i<argc;i++) |
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{ |
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if ((*argv[i])=='-') |
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{ |
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const char *p=argv[i]+1; |
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while ((*p)!='\0') |
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{ |
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char c=*(p++);; |
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if ((c=='l') || (c=='L')) |
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opt_do_list = 1; |
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if ((c=='v') || (c=='V')) |
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opt_do_list = 1; |
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if ((c=='x') || (c=='X')) |
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opt_do_extract = 1; |
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if ((c=='e') || (c=='E')) |
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opt_do_extract = opt_do_extract_withoutpath = 1; |
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if ((c=='o') || (c=='O')) |
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opt_overwrite=1; |
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} |
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} |
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else |
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{ |
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if (zipfilename == NULL) |
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zipfilename = argv[i]; |
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else if (filename_to_extract==NULL) |
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filename_to_extract = argv[i] ; |
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} |
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} |
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} |
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if (zipfilename!=NULL) |
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{ |
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strcpy(filename_try,zipfilename); |
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uf = unzOpen(zipfilename); |
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if (uf==NULL) |
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{ |
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strcat(filename_try,".zip"); |
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uf = unzOpen(filename_try); |
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} |
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} |
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if (uf==NULL) |
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{ |
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printf("Cannot open %s or %s.zip\n",zipfilename,zipfilename); |
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exit (1); |
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} |
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printf("%s opened\n",filename_try); |
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if (opt_do_list==1) |
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return do_list(uf); |
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else if (opt_do_extract==1) |
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{ |
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if (filename_to_extract == NULL) |
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return do_extract(uf,opt_do_extract_withoutpath,opt_overwrite); |
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else |
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return do_extract_onefile(uf,filename_to_extract, |
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opt_do_extract_withoutpath,opt_overwrite); |
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} |
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unzCloseCurrentFile(uf); |
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return 0; /* to avoid warning */ |
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}
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