0712118.cpp

this is hupffman code.you can compress file with this application

// 0712118.cpp : Defines the entry point for the console application.
//
#include "stdafx.h"

int main(int argc, char* argv[])
{
	FILE *dest_file;
	fileheader header;/////////////////
	char temp[255],temp2[255];
	char Files[100][255];
	
	if (argc==5)
		//		if(1)
	{
		if(strcmp(argv[1],"-e")==0)
		{
			strcpy(temp,argv[2]);
			FileNameFromPath(temp);
			strcpy(header.file,temp);
			header.N=1;
			
			if(IsFolder(argv[2],Files))
			{
				header.N=IsFolder(argv[2],Files);
				strcpy(temp,argv[2]);
				FileNameFromPath(temp);
				strcat(temp,".huf");
				strcpy(temp2,argv[4]);
				CreateFileDirectory(temp,temp2);
			}
			else
			{
				strcpy(Files[0],argv[2]);
				strcpy(temp,argv[2]);
				FileNameFromPath(temp);
				CreateFileName(temp);
				strcpy(temp2,argv[4]);
				CreateFileDirectory(temp,temp2);
			}
			
			dest_file = fopen(temp2, "wb");
			
			if(!dest_file)
			{
				printf("Loi mo file.");
				getch();
				exit(1);
			}
			Huffman huffman;
			for(int i=0;i<header.N;i++)
			{
				FILE *source_file;
				unsigned char *sour, *dest;
				int usize, csize;
				
				source_file = fopen(Files[i], "rb");
				if(!source_file)
				{
					printf("Loi mo file %s",Files[i]);
					getch();
					continue;
				}
				usize = get_file_size(source_file) ;
				header.UnCompressSize[i]=usize;
				
				sour = new unsigned char[usize];
				dest = new unsigned char[usize];
				usize = (int)fread(sour, 1, usize, source_file);
				
				strcpy(temp,Files[i]);
				FileNameFromPath(temp);
				strcpy(huffman.TenFile,temp);
				huffman.encode(dest, csize, sour, usize);
				
				fwrite(dest,1, csize, dest_file);
				header.CompressSize[i]=csize;
			}
			
			fwrite(&header,1, sizeof(fileheader), dest_file);
			printf("Chuong trinh duoc thuc hien xong.");
		}
		
		if(strcmp(argv[1],"-d")==0)
		{
			FILE *source_file,*dest_file;
			Huffman huffman;
			unsigned char *sour, *dest;
			int usize, csize;
			
			source_file = fopen(argv[2], "rb");
			fseek(source_file,-sizeof(fileheader),SEEK_END);
			fread(&header,sizeof(fileheader),1,source_file);
			
			rewind(source_file);
			if(header.N==1)
			{
				csize = header.CompressSize[0];
				sour = new unsigned char[csize];
				csize = fread(sour,1, csize, source_file);
				dest = new unsigned char[header.UnCompressSize[0]];
				huffman.filesize=header.UnCompressSize[0];
				huffman.decode(dest, usize, sour);
				
				strcpy(temp,huffman.TenFile); 
				strcpy(temp2,argv[4]);
				strcat(temp2,"\\");
				strcat(temp2,temp);
				
				dest_file=fopen(temp2,"wb");	
				fwrite(dest,1,usize, dest_file);
			}
			else
			{
				for(int i=0;i<header.N;i++)
				{
					unsigned char *sour, *dest;
					int usize, csize;
					
					csize = header.CompressSize[i];
					sour = new unsigned char[csize];
					csize = fread(sour,1, csize, source_file);
					dest = new unsigned char[header.UnCompressSize[i]];
					huffman.filesize=header.UnCompressSize[i];
					huffman.decode(dest, usize, sour); 
					
					strcpy(temp2,argv[4]);
					strcpy(temp,argv[4]);
					strcat(temp,"\\");
					strcat(temp,header.file);
					strcat(temp,"\\");
					_mkdir(temp);
					strcat(temp,huffman.TenFile); 
					
					dest_file=fopen(temp,"wb");
					fwrite(dest,1,usize, dest_file);
				}
			}
			printf("Chuong trinh duoc thuc hien xong.");
		}
	}
	else
		if(argc==3 && strcmp(argv[1],"-l")==0)
		{
			unsigned char *sour, *dest;
			int usize, csize;
			Huffman huffman;
			FILE *source_file;
			
			source_file = fopen(argv[2], "rb");
			if(!source_file)
			{
				printf("Khong mo duoc tap tin.");
				getch();
				exit(0);
			}
			
			fseek(source_file,-sizeof(fileheader),SEEK_END);
			fread(&header,sizeof(fileheader),1,source_file);
			rewind(source_file);
			
			if(header.N!=1)
			{
				printf("\n{%s: ",header.file);	
				
				for(int i=0;i<header.N;i++)
				{
					csize = header.CompressSize[i];
					sour = new unsigned char[csize];
					
					csize = fread(sour,1, csize, source_file);
					dest = new unsigned char[header.UnCompressSize[i]];
					huffman.filesize=header.UnCompressSize[i];
					huffman.decode(dest, usize, sour); 
					
					strcpy(temp,huffman.TenFile); 
					printf("%s",temp);
					if(i<(header.N-1))
						printf(", ");
					else
						printf("}");
				}
			}
			else
			{	
				csize = header.CompressSize[0];
				sour = new unsigned char[csize];
				
				csize = fread(sour,1, csize, source_file);
				dest = new unsigned char[header.UnCompressSize[0]];
				huffman.filesize=header.UnCompressSize[0];
				huffman.decode(dest, usize, sour); 
				
				strcpy(temp,huffman.TenFile); 
				printf("{");
				printf("%s",temp);
				printf("}");
			}
		}
		else
			if(argc==7 && strcmp(argv[3],"-f")==0)
			{
				FILE *source_file,*dest_file;
				Huffman huffman;
				unsigned char *sour, *dest;
				int usize, csize;
				int sl_file;
				
				source_file = fopen(argv[2], "rb");
				fseek(source_file,-sizeof(fileheader),SEEK_END);
				fread(&header,sizeof(fileheader),1,source_file);
				if(header.N==4)
					printf("Thanh cong!");
				rewind(source_file);
				
				sl_file=GetFileName(argv[4],Files);
				
				for(int i=0;i<header.N;i++)
				{
					csize = header.CompressSize[i];
					sour = new unsigned char[csize];
					csize = fread(sour,1, csize, source_file);
					dest = new unsigned char[header.UnCompressSize[i]];//huffman.get_uncompressed_size(sour)]; --> 3 la size usize luc encoding//-----
					huffman.filesize=header.UnCompressSize[i];		//--> 3 la size usize luc encoding--------
					huffman.decode(dest, usize, sour); 
					
					strcpy(temp,argv[6]);
					strcat(temp,"\\");
					strcat(temp,header.file);
					strcat(temp,"\\");
					_mkdir(temp);
					strcat(temp,huffman.TenFile);
					
					
					strcpy(temp2,huffman.TenFile);
					
					if(IsFileDecoding(temp2,Files,sl_file))
					{
						dest_file=fopen(temp,"wb");
						fwrite(dest,1,usize, dest_file);
					}
				}
				printf("Chuong trinh duoc thuc hien xong.");
				
			}
			else
			{
				printf("Tham so dong lenh sai");
				printf("\n0712118.exe -e <File_Name> -o <Output_Directory>");
				printf("\n0712118.exe -e <Directory_Name> -o <Output_Directory>");
				printf("\n0712118.exe -l <Compressed_File>");
				printf("\n0712118.exe -d <Compressed_File> -o <Output_Directory>");
				printf("\n0712118.exe -d <Compressed_File> -f file1,file2,...,fileN -o <Output_Directory>");
				getch();
				exit(0);
			}
			
			getch();
			return (0);
}