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이 코드는 디렉토리를 열고 파일 안의 모든 데이터 라인을 반복하고 파싱하여 계산을 수행하고 결과 데이터를 새 파일로 출력합니다 .C : 열려있는 파일이 너무 많습니다.
문제는 최대 약 1021 개의 파일 만 출력 할 수 있다는 것입니다. 모든 데이터를 출력 한 후 fopens을 닫으므로 내가 잘못하고 있는지 확실하지 않습니다.
fclose() 열려있는 파일을 닫지 않아야하나요? 같은
int main(int argc, char *argv[])
{
//sample data values
double lat;
double lon;
double convergence;
double pt_scale;
int zone = 54;
double major_axis = 6378137.0000;
double flattening = (1/298.2572);
double zoneWidth = 6;
double centMeridian = -177;
double falseEast = FALSE_EASTING;
double falseNorth = FALSE_NORTHING;
double scale = SCALE_FACTOR;
int max_size = 128;
int current_size = max_size;
char *pathStr = malloc(max_size);
char *outPathStr = malloc(max_size);
char coData[100]; //max length of line;
long firstTerm, secondTerm; //terms we will split the line into, lat, lon, elevation.
int counter = 0; //pos counter
int d = EOF; //end of file ASCII
char strIn[200];
char* elevation;
char strOut[200];
char dirOut[200]; //sprintf must use a actual defined buffer otherwise there will be a buffer overflow.
char* cchr;
int j;
_setmaxstdio(2048);
printf("Please enter the path of the files: \n");
getUserInput(pathStr, current_size, max_size);
printf("Please enter the output path of the files: \n");
getUserInput(outPathStr, current_size, max_size);
//loop through each file in the directory. Open the file, convert, then close it.
//we will use dirent.h as it is cross platform so we wont have to worry about sharing issues
DIR *dir; //new directory
struct dirent *ent;
dir = opendir(pathStr); //allcate it a path
if(opendir(pathStr) == NULL)
{ printf("Error: %d (%s)\n", errno, strerror(errno));}
int k;
if(dir != NULL)
{
while((ent = readdir(dir)) != NULL) //loop through each file in the directory.
{
//open the file and loop through each line converting it then outputing it into a new file
if((!strcmp(ent->d_name,"..") || !strcmp(ent->d_name,".")) == 1)
{
//dont want these directories
continue;
}
else
{
sprintf(strIn,"%s%s",pathStr,ent->d_name); //get the file n
FILE *fp = fopen(strIn, "r");
if(fopen(strIn, "r") == NULL) //for inputting file
{ printf("Error: %d (%s)\n", errno, strerror(errno));
getchar();
break; }
sprintf(dirOut,"%s%d%s",outPathStr,counter,".geo");
printf("%s \n",dirOut);
FILE *fp2 = fopen(dirOut, "w"); //for outputting file
if(fopen(dirOut, "w") == NULL)
{ printf("Error: %d (%s)\n", errno, strerror(errno));
getchar();
break; }
while(fgets(coData, 100, fp) != NULL)//loop through line by line, allocate into 2 doubles and a string, pass the two coordinates and convert
{
//extract terms from coData
char * pch; //pointer to array pos
char * pend;
pch = strtok(coData," ");
j = 0;
while(j <= 2) //We only want to split the first three parameters.
{
//convert char array to double for co-oridinate conversion
if(j == 0)
{
firstTerm = atof(pch); //latitude;
j++;
continue;
}
if(j == 1)
{
pch = strtok(NULL, " ");
secondTerm = atof(pch); //longitude
j++;
continue;
}
if(j == 2)
{
pch = strtok(NULL," ");
elevation = pch; //elevation doesnt need to be converted because it isnt used in the coordinate conversion.
break;
}
}
grid2spheroid(&lat,&lon,&convergence,&pt_scale,firstTerm,secondTerm,zone,0, major_axis,flattening,zoneWidth,centMeridian,falseEast,falseNorth,scale);
sprintf(strOut,"%f %f %s",lat,lon,elevation);
//printf("%d %d", lat, lon);
fputs(strOut,fp2);
} //end of while
fclose(fp2);
fclose(fp);
counter++;
}
}
closedir(dir);
}
free(pathStr); //finished using the path string so we can finish the
free(outPathStr);
getchar();
return 0;
}
void getUserInput(char *pathStr, int current_size, int max_size)
{
unsigned int i = 0;
if(pathStr != NULL)
{
int c = EOF;
//get the user input and reallocate the memory size if the input it too large.
while((c = getchar()) != '\n' && c != EOF) //WHILE NOT END OF FILE OR NEW LINE (USER PRESSED ENTER)
{
pathStr[i++] = (char)c;
if(i == current_size)
{
current_size = i+max_size;
pathStr = realloc(pathStr, current_size);
}
}
}
}
도움 주셔서 감사합니다. 내 멍청한 실수. 나는 이것에서 확실히 배울 것이다! – Jackter