C/C++程序设计10：读取某一目录下的所有文件名

需求说明：给定raw影像，为其添加匹配的头文件

#include 
#include 
#include 
#include 
#include 

using namespace std;

void getFileNameFromFolder(string folder, vector& fileNames)
{
	long hFile = 0;
	struct _finddata_t fileInfo;
	folder += "*";//此处的*不能超=少
	hFile = _findfirst(folder.c_str(), &fileInfo);
	string tmp;
	if (hFile != -1)
	{
		do 
		{
			tmp = fileInfo.name;
			if(tmp.length() < 4) continue;;
			if (tmp.substr(tmp.length() - 4, tmp.length()) == ".raw")
			{
				fileNames.push_back(fileInfo.name);
			}			
		} while (_findnext(hFile, &fileInfo) == 0);
	}
	

}
void generateHeader(string fileName)
{
	int width = 6024;
	int height = 8008;
	int nChannels = 1;
	string path_out_hdr;
	int pos=fileName.find(".raw");
	if (pos!=-1)
		path_out_hdr=fileName.replace(fileName.find(".raw"),4,".hdr");
	else
		path_out_hdr=fileName.append(".hdr");
	FILE * fp_hdr=fopen(path_out_hdr.c_str(),"w+t");
	fprintf(fp_hdr,"ENVI\ndescription = {\n  File Imported into ENVI.}\nsamples =  %d\nlines   =  %d\nbands   = %d\nheader offset = 0\nfile type = ENVI Standard\ndata type = 12\ninterleave = bsq\nsensor type = Unknown\nbyte order = 0\nwavelength units = Unknown",width,height,nChannels);
	fclose(fp_hdr);
}


int main()
{
	string pDstImgFileName = "D:data\\";
	vector fileNames;
	getFileNameFromFolder((string)pDstImgFileName, fileNames);
	for (int i = 0; i < fileNames.size(); i++)
	{
		generateHeader(pDstImgFileName + fileNames[i]);
	}
	return 0;
}

注意事项：目录的最后一个字符应为*