window下 对特定文件夹下文件操作

#include "stdafx.h"
#include <direct.h>


#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <io.h>

#define file_dir "E:\\ceshi\\data_test"
#define deal_file_dir "E:\\ceshi\\resuart_file"
#define Frame_header_count 96


//导出帧头  和  数据 可以放在同一个文件里面，也可以放在不同的文件里面
bool transformation_file(FILE * fd, long int datalenth,const char * name)
{
	FILE * fd2;
	char * value_buffer;
	long int resurt = 0;
	char file_path[100] = { 0 };
    value_buffer = (char *)malloc(datalenth);
	if (NULL == value_buffer)
	{
		printf("开辟空间失败");
		goto err_malloc_faile;
	}
	resurt = fseek(fd, datalenth - Frame_header_count, SEEK_SET);
	if (resurt)
	{
		printf("fseek1失败");
		goto err_fseek;
	}
	resurt = fread(value_buffer, 1, Frame_header_count, fd);
	if (resurt != Frame_header_count)
	{
		printf("1读取个数有误");
		goto err_fseek;
	}
	resurt = fseek(fd, 0, SEEK_SET);
	if (resurt)
	{
		printf("fseek2失败");
		goto err_fseek;
	}
	resurt = fread(value_buffer + Frame_header_count, 1, datalenth - Frame_header_count, fd);
	if (resurt != datalenth - Frame_header_count)
	{
		printf("2读取个数有误");
		goto err_fseek;
	}
	//所有的数据都存储在value_buffer里面 
	//建立新的文件 存起来
	strcpy(file_path, deal_file_dir);
	file_path[strlen(file_path)] = '\\';
	strcat(file_path, name);
	fd2 = fopen(file_path, "wb");
	if (fd2 == NULL)
	{
		printf("文件打开失败\n");
		goto err_fseek;
	}
	resurt = fwrite(value_buffer, 1, datalenth, fd2);
	if (resurt != datalenth)
	{
		printf("文件写入失败\n");
		goto err_write;
	}
	free(value_buffer);
	fclose(fd2);
	return true;
err_write:
	fclose(fd2);
err_fseek:
	free(value_buffer);
err_malloc_faile:
	return false;
}


//文件处理 打开原来的文件 找到对应位置

bool deal_file(const char * filepath,const char * name)
{
	long int datalenth;
	FILE * fd ;
	bool result;
	fd = fopen(filepath, "rb");
	if (fd == NULL)
	{
		printf("文件打开失败\n");
		goto file_open_err;		
	}
    fseek(fd,0, SEEK_END);
	datalenth = ftell(fd);	
	result = transformation_file(fd, datalenth, name);
	if (!result)
	{
		printf("transformation_file失败\n");
		goto transformation_file_err;
	}
	printf("文件大小是多少%ld\n", datalenth);
	fclose(fd);
	return true;
transformation_file_err:
	fclose(fd);
file_open_err:
	return false;
}


int main()
{
	char filename[100] = {0};
	long file;
	bool result;
	struct _finddata_t find;
	_chdir(file_dir);
	if ((file = _findfirst("*.*", &find)) == -1L)
	{
		printf("空白!\n");
		exit(0);
	}

	if ((strcmp(find.name, ".") == 0 || strcmp(find.name, "..") == 0))
	{
		
	}
	else
	{
		strcpy(filename, file_dir);
		filename[strlen(filename)] = '\\';
		strcat(filename, find.name);

		printf("%s\n", filename);
		printf("%s\n", find.name);
	}
	
	while (_findnext(file, &find) == 0)
	{
		if ((strcmp(find.name, ".") == 0 ||  strcmp(find.name, "..") == 0))
		{
			continue;
		}
		memset(filename, 0, sizeof(filename));
		strcpy(filename, file_dir);
		filename[strlen(filename) ] = '\\';
		strcat(filename, find.name);
		printf("%s\n", filename);	
		result = deal_file(filename, find.name);
		if (!result)
		{
			printf("deal_file 失败");
		}
	}
	
	_findclose(file);
	return 0;
}