www.gusucode.com > VC++ 树节点动态添加插入-源码程序 > VC++ 树节点动态添加插入-源码程序/code/zipfunc/ZipFile.cpp
//Download by http://www.NewXing.com // ZipFile.cpp: implementation of the CZipFile class. // ////////////////////////////////////////////////////////////////////// #include "stdafx.h" #include "ZipFile.h" #ifndef VERSIONMADEBY # define VERSIONMADEBY (0x0) /* platform depedent */ #endif #define FLAG_LOCALHEADER_OFFSET (0x06) #define CRC_LOCALHEADER_OFFSET (0x0e) #define SIZECENTRALHEADER (0x2e) /* 46 */ #ifndef Z_BUFSIZE #define Z_BUFSIZE (16384) #endif #ifndef Z_MAXFILENAMEINZIP #define Z_MAXFILENAMEINZIP (256) #endif #ifndef DEF_MEM_LEVEL #if MAX_MEM_LEVEL >= 8 # define DEF_MEM_LEVEL 8 #else # define DEF_MEM_LEVEL MAX_MEM_LEVEL #endif #endif #define SIZEDATA_INDATABLOCK (4096-(4*4)) #define LOCALHEADERMAGIC (0x04034b50) #define CENTRALHEADERMAGIC (0x02014b50) #define ENDHEADERMAGIC (0x06054b50) #define SIZECENTRALHEADER (0x2e) /* 46 */ // it doesn't compile anyway // const char z_copyright[] = // " unzip & zip 0.15 Copyright 1998 Gilles Vollant & MFC/C++ revision Copyright 2000 Tadeusz Dracz"; #define ZIP_PARAMERROR (-102) zip_fileinfo::zip_fileinfo() { tmz_date = CTime::GetCurrentTime(); dosDate = internal_fa = external_fa = 0; } uLong zip_fileinfo::get_dos_date() { if (dosDate) return dosDate; uLong year = (uLong)tmz_date.GetYear(); if (year>1980) year-=1980; else if (year>80) year-=80; return (uLong) ((tmz_date.GetDay() + 32 * tmz_date.GetMonth() + 512 * year) << 16) | (tmz_date.GetSecond() / 2 + 32 * tmz_date.GetMinute() + 2048 * (uLong)tmz_date.GetHour()); } void curfile_info::alloc_central_header() { ASSERT(!central_header); if (size_centralheader) central_header = new char[size_centralheader]; } void curfile_info::free_central_header() { if (central_header) { delete[] central_header; central_header = NULL; } } curfile_info::curfile_info() { buffered_data = new Byte [Z_BUFSIZE]; central_header = NULL; } curfile_info::~curfile_info() { free_central_header(); delete[] buffered_data; } linkedlist_datablock_internal::linkedlist_datablock_internal() { next_datablock = NULL; avail_in_this_block = SIZEDATA_INDATABLOCK; filled_in_this_block = 0; data = new unsigned char [SIZEDATA_INDATABLOCK]; } linkedlist_datablock_internal::~linkedlist_datablock_internal() { delete[] data; } linkedlist_data::linkedlist_data() { first_block = last_block = NULL; } linkedlist_data::~linkedlist_data() { linkedlist_datablock_internal* b = first_block; while (b) { linkedlist_datablock_internal* a = b->next_datablock; delete b; b = a; } } void linkedlist_data::add_data_in_datablock(char* buf, uLong len) { if (!last_block) first_block = last_block = new linkedlist_datablock_internal; linkedlist_datablock_internal* ldi = last_block; while (len>0) { uInt copy_this; unsigned char* to_copy; if (ldi->avail_in_this_block == 0) { ldi->next_datablock = new linkedlist_datablock_internal; ldi = ldi->next_datablock ; last_block = ldi; } if (ldi->avail_in_this_block < len) copy_this = (uInt)ldi->avail_in_this_block; else copy_this = (uInt)len; to_copy = &(ldi->data[ldi->filled_in_this_block]); memcpy(to_copy, buf, copy_this); ldi->filled_in_this_block += copy_this; ldi->avail_in_this_block -= copy_this; buf += copy_this ; len -= copy_this; } } int linkedlist_data::write_datablock(CFile & f) { linkedlist_datablock_internal* ldi; ldi = first_block; int size = 0; while (ldi) { if (ldi->filled_in_this_block > 0) f.Write(ldi->data, (uInt)ldi->filled_in_this_block); size += ldi->filled_in_this_block; ldi = ldi->next_datablock; } return size; } zip_internal::zip_internal() { in_opened_file_inzip = 0; ci.stream_initialised = 0; number_entry = 0; } zip_internal::~zip_internal() { } ////////////////////////////////////////////////////////////////////// // Construction/Destruction ////////////////////////////////////////////////////////////////////// CZipFile::CZipFile() { m_pFile = &zi.filezip; } CZipFile::CZipFile(LPCTSTR pathname, bool append) { m_pFile = &zi.filezip; Open(pathname, append); } void CZipFile::Open(LPCTSTR pathname, bool append) { if (!IsClosed()) return; CFileException* e = new CFileException; if (!zi.filezip.Open(pathname, (append ? CFile::modeNoTruncate : CFile::modeCreate)|CFile::modeWrite | CFile::shareDenyWrite, e)) throw e; e->Delete(); zi.filezip.SeekToEnd(); zi.begin_pos = zi.filezip.GetPosition(); } CZipFile::~CZipFile() { // Close(); // cannot be here: if an exception is thrown strange things can happen } /* =========================================================================== Outputs a long in LSB order to the given file nbByte == 1, 2 or 4 (byte, short or long) */ void CZipFile::ziplocal_putValue(uLong x, int nbByte) { unsigned char buf[4]; int n; for (n = 0; n < nbByte; n++) { buf[n] = (unsigned char)(x & 0xff); x >>= 8; } zi.filezip.Write(buf, nbByte); } void CZipFile::ziplocal_putValue_inmemory(Byte dest, uLong x, int nbByte) { unsigned char* buf=(unsigned char*)zi.ci.central_header + dest; int n; for (n = 0; n < nbByte; n++) { buf[n] = (unsigned char)(x & 0xff); x >>= 8; } } // void CZipFile::OpenNewFileInZip (CString filename, zip_fileinfo& zipfi, int level, CString comment, const void* extrafield_local, uInt size_extrafield_local, const void* extrafield_global, uInt size_extrafield_global, int method) { if ((method != Z_DEFLATED) || (!level)) ThrowError(ZIP_PARAMERROR); if (zi.in_opened_file_inzip == 1) CloseFileInZip(); if (filename.IsEmpty()) filename = "-"; zi.ci.dosDate = zipfi.get_dos_date(); zi.ci.flag = 0; if ((level == 8) || (level == 9)) zi.ci.flag |= 2; if (level == 2) zi.ci.flag |= 4; if (level == 1) zi.ci.flag |= 6; zi.ci.crc32 = 0; zi.ci.method = method; zi.ci.stream_initialised = 0; zi.ci.pos_in_buffered_data = 0; zi.ci.pos_local_header = zi.filezip.GetPosition(); zi.ci.size_centralheader = SIZECENTRALHEADER + filename.GetLength() + size_extrafield_global + comment.GetLength(); zi.ci.alloc_central_header(); ziplocal_putValue_inmemory(0, (uLong)CENTRALHEADERMAGIC,4); /* version info */ ziplocal_putValue_inmemory(4,(uLong)VERSIONMADEBY,2); ziplocal_putValue_inmemory(6,(uLong)20, 2); ziplocal_putValue_inmemory(8,(uLong)zi.ci.flag,2); ziplocal_putValue_inmemory(10,(uLong)zi.ci.method,2); ziplocal_putValue_inmemory(12,(uLong)zi.ci.dosDate,4); ziplocal_putValue_inmemory(16,(uLong)0, 4); /*crc*/ ziplocal_putValue_inmemory(20,(uLong)0, 4); /*compr size*/ ziplocal_putValue_inmemory(24,(uLong)0, 4); /*uncompr size*/ ziplocal_putValue_inmemory(28,(uLong)filename.GetLength(), 2); ziplocal_putValue_inmemory(30,(uLong)size_extrafield_global,2); ziplocal_putValue_inmemory(32,(uLong)comment.GetLength(), 2); ziplocal_putValue_inmemory(34,(uLong)0, 2); /*disk nm start*/ ziplocal_putValue_inmemory(36,(uLong)zipfi.internal_fa, 2); ziplocal_putValue_inmemory(38,(uLong)zipfi.external_fa, 4); ziplocal_putValue_inmemory(42,(uLong)zi.ci.pos_local_header, 4); char* pDest = zi.ci.central_header + SIZECENTRALHEADER; memcpy(pDest, (LPCTSTR)filename, filename.GetLength()); pDest += filename.GetLength(); memcpy(pDest, extrafield_global, size_extrafield_global); pDest += size_extrafield_global; memcpy(pDest, (LPCTSTR)comment, comment.GetLength()); /* write the local header */ ziplocal_putValue((uLong)LOCALHEADERMAGIC, 4); ziplocal_putValue((uLong)20, 2);/* version needed to extract */ ziplocal_putValue((uLong)zi.ci.flag, 2); ziplocal_putValue((uLong)zi.ci.method, 2); ziplocal_putValue((uLong)zi.ci.dosDate, 4); ziplocal_putValue((uLong)0, 4); /* crc 32, unknown */ ziplocal_putValue((uLong)0, 4); /* compressed size, unknown */ ziplocal_putValue((uLong)0, 4); /* uncompressed size, unknown */ ziplocal_putValue((uLong)filename.GetLength(), 2); ziplocal_putValue((uLong)size_extrafield_local, 2); zi.filezip.Write(filename, filename.GetLength()); if (size_extrafield_local > 0) zi.filezip.Write(extrafield_local, size_extrafield_local); zi.ci.stream.avail_in = (uInt)0; zi.ci.stream.avail_out = (uInt)Z_BUFSIZE; zi.ci.stream.next_out = zi.ci.buffered_data; zi.ci.stream.total_in = 0; zi.ci.stream.total_out = 0; if ((zi.ci.method == Z_DEFLATED)) { zi.ci.stream.zalloc = (alloc_func)myalloc; zi.ci.stream.zfree = (free_func)myfree; zi.ci.stream.opaque = m_bDetectZlibMemoryLeaks ? &m_list : 0; int err = deflateInit2(&zi.ci.stream, level, Z_DEFLATED, -MAX_WBITS, DEF_MEM_LEVEL, Z_DEFAULT_STRATEGY); CheckForError(err); zi.ci.stream_initialised = 1; } zi.in_opened_file_inzip = 1; } void CZipFile::WriteInFileInZip(const void *buf, UINT len) { if (zi.in_opened_file_inzip == 0) ThrowError(ZIP_PARAMERROR); zi.ci.stream.next_in = (unsigned char*)buf; zi.ci.stream.avail_in = len; zi.ci.crc32 = crc32(zi.ci.crc32, (unsigned char*)buf, len); int err = Z_OK; while ((err == Z_OK) && (zi.ci.stream.avail_in > 0)) { if (zi.ci.stream.avail_out == 0) { zi.filezip.Write(zi.ci.buffered_data, zi.ci.pos_in_buffered_data); zi.ci.pos_in_buffered_data = 0; zi.ci.stream.avail_out = (uInt)Z_BUFSIZE; zi.ci.stream.next_out = zi.ci.buffered_data; } if (zi.ci.method == Z_DEFLATED) { uLong uTotalOutBefore = zi.ci.stream.total_out; err = deflate(&zi.ci.stream, Z_NO_FLUSH); zi.ci.pos_in_buffered_data += (uInt)(zi.ci.stream.total_out - uTotalOutBefore) ; } else { uInt copy_this; if (zi.ci.stream.avail_in < zi.ci.stream.avail_out) copy_this = zi.ci.stream.avail_in; else copy_this = zi.ci.stream.avail_out; memcpy(zi.ci.stream.next_out, zi.ci.stream.next_in, copy_this); zi.ci.stream.avail_in -= copy_this; zi.ci.stream.avail_out -= copy_this; zi.ci.stream.next_in += copy_this; zi.ci.stream.next_out += copy_this; zi.ci.stream.total_in += copy_this; zi.ci.stream.total_out += copy_this; zi.ci.pos_in_buffered_data += copy_this; } } CheckForError(err); } void CZipFile::CloseFileInZip() { if (zi.in_opened_file_inzip == 0) return; int err = Z_OK; zi.ci.stream.avail_in = 0; if (zi.ci.method == Z_DEFLATED) while (err == Z_OK) { uLong uTotalOutBefore; if (zi.ci.stream.avail_out == 0) { zi.filezip.Write(zi.ci.buffered_data, zi.ci.pos_in_buffered_data); zi.ci.pos_in_buffered_data = 0; zi.ci.stream.avail_out = (uInt)Z_BUFSIZE; zi.ci.stream.next_out = zi.ci.buffered_data; } uTotalOutBefore = zi.ci.stream.total_out; err = deflate(&zi.ci.stream, Z_FINISH); zi.ci.pos_in_buffered_data += (uInt)(zi.ci.stream.total_out - uTotalOutBefore) ; } if (err == Z_STREAM_END) err = Z_OK; /* this is normal */ CheckForError(err); if (zi.ci.pos_in_buffered_data > 0) zi.filezip.Write(zi.ci.buffered_data, zi.ci.pos_in_buffered_data); if (zi.ci.method == Z_DEFLATED) { err = deflateEnd(&zi.ci.stream); zi.ci.stream_initialised = 0; } CheckForError(err); ziplocal_putValue_inmemory(16, (uLong)zi.ci.crc32, 4); /*crc*/ ziplocal_putValue_inmemory(20, (uLong)zi.ci.stream.total_out, 4); /*compr size*/ ziplocal_putValue_inmemory(24, (uLong)zi.ci.stream.total_in, 4); /*uncompr size*/ zi.central_dir.add_data_in_datablock(zi.ci.central_header, (uLong)zi.ci.size_centralheader); zi.ci.free_central_header(); long cur_pos_inzip = zi.filezip.GetPosition(); zi.filezip.Seek(zi.ci.pos_local_header + 14, CFile::begin); ziplocal_putValue((uLong)zi.ci.crc32, 4); /* crc 32, unknown */ ziplocal_putValue((uLong)zi.ci.stream.total_out, 4);/* compressed size, unknown */ ziplocal_putValue((uLong)zi.ci.stream.total_in, 4); /* uncompressed size, unknown */ zi.filezip.Seek(cur_pos_inzip, CFile::begin); zi.number_entry++; zi.in_opened_file_inzip = 0; } void CZipFile::Close(CString global_comment) { if (IsClosed()) return; if (zi.in_opened_file_inzip == 1) CloseFileInZip (); uLong centraldir_pos_inzip = zi.filezip.GetPosition(); uLong size_centraldir = zi.central_dir.write_datablock(zi.filezip); /* Magic End */ ziplocal_putValue((uLong)ENDHEADERMAGIC, 4); ziplocal_putValue((uLong)0, 2);/* number of this disk */ ziplocal_putValue((uLong)0, 2);/* number of the disk with the start of the central directory */ ziplocal_putValue((uLong)zi.number_entry, 2);/* total number of entries in the central dir on this disk */ ziplocal_putValue((uLong)zi.number_entry,2);/* total number of entries in the central dir */ ziplocal_putValue((uLong)size_centraldir,4);/* size of the central directory */ ziplocal_putValue((uLong)centraldir_pos_inzip ,4);/* offset of start of central directory with respect to the starting disk number */ ziplocal_putValue((uLong)global_comment.GetLength(), 2);/* zipfile comment length */ if (!global_comment.IsEmpty()) zi.filezip.Write(global_comment, global_comment.GetLength()); zi.filezip.Close(); } void CZipFile::UpdateZipInfo(zip_fileinfo &zi, CFile &f) { CFileStatus fs; f.GetStatus(fs); zi.tmz_date = fs.m_mtime; zi.external_fa = ::GetFileAttributes(f.GetFilePath()); // mfc bug: m_attribute is 1-byte }