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[C/C++ 演算法] 實作任裡兩個檔案合併與分開(自己實作檔案簡易打包) #include <iostream> #include <stdio.h> #include <string.h> using namespace std; struct Data { char file1[256]; long file1_size; char file2[256]; long file2_size; char outfile[256]; }; bool MakeCustomCAB(Data *dat) { cout << dat->file1<< endl; cout << dat->file2<< endl; cout << dat->outfile<< endl; //file size FILE *pf1 = fopen(dat->file1,"rb"); if ( NULL == pf1 ) { return false; } fseek(pf1, 0L, SEEK_END); dat->file1_size = ftell(pf1); cout << dat->file1 <<" size="<<dat->file1_size<< endl; fclose(pf1); FILE *pf2 = fopen(dat->file2,"rb"); if ( NULL == pf2 ) { return false; } fseek(pf2, 0L, SEEK_END); dat->file2_size = ftell(pf2); cout << dat->file2 <<" size="<<dat->file2_size<< endl; fclose(pf2); // FILE *pOutFile = fopen(dat->outfile,"wb"); if ( NULL == pOutFile ) { return false; } //¼g¤J¤å¥óÀY fwrite(dat,sizeof(Data),1,pOutFile); FILE *pWorkFile1; for(int i=0;i<2;i++) { if(i==0) pWorkFile1 = fopen(dat->file1,"rb"); else pWorkFile1 = fopen(dat->file2,"rb"); if ( NULL == pWorkFile1 ) { fclose(pWorkFile1); fclose(pOutFile); return false; } unsigned char *pTmpData1 = NULL; pTmpData1 = new unsigned char[dat->file1_size]; fread(pTmpData1,dat->file1_size,1,pWorkFile1); if ( ferror(pWorkFile1) ) { fclose(pWorkFile1); fclose(pOutFile); return false; } fwrite(pTmpData1,dat->file1_size,1,pOutFile); if ( ferror(pOutFile) ) { fclose(pWorkFile1); fclose(pOutFile); return false; } delete [] pTmpData1; pTmpData1=NULL; fclose(pWorkFile1); pWorkFile1=NULL; } fclose(pOutFile); return true; } void DoUnCAB(char *CabFilePathName) { FILE *pCAB = NULL; FILE *pWork = NULL; pCAB = fopen(CabFilePathName,"rb"); //讀文件頭 Data dat; memset(&dat,0x0,sizeof(Data)); fread(&dat,sizeof(Data),1,pCAB); cout << dat.file1<< endl; cout << dat.file2<< endl; cout << dat.outfile<< endl; //printCAB(); //解包的所有檔放到當前目錄下 for ( int i = 0 ; i < 2 ; i++ ) { unsigned char *pTmpData = NULL; if(i==0) { pTmpData = new unsigned char[dat.file1_size]; fread(pTmpData,dat.file1_size,1,pCAB); pWork = fopen(dat.file1,"wb"); fwrite(pTmpData,dat.file1_size,1,pWork); } else { pTmpData = new unsigned char[dat.file2_size]; fread(pTmpData,dat.file2_size,1,pCAB); pWork = fopen(dat.file2,"wb"); fwrite(pTmpData,dat.file2_size,1,pWork); } fclose(pWork); delete [] pTmpData; } fclose(pCAB); } int main() { Data *dat; dat=new Data[1]; cout << "Hello world!" << endl; /*     strcpy(dat->file1,"c:\\b_xml1.xml");     strcpy(dat->file2,"c:\\b_xml2.xml");     strcpy(dat->outfile,"c:\\b_xml.xml");     MakeCustomCAB(dat);     */ DoUnCAB("c:\\b_xml.xml"); return 0; }