#include <stdio.h>
#include <stdlib.h>
 
 
/*
	Function Name: get_file_content
	Description: fills content of the file to given buffer.
	Parameters: file to be read(in), Mode(in), destination buffer(out)
	Return Type: pointer to content (SUCCESS), otherwise NULL
*/
char* get_file_content (char *file_name, char *file_mode, char *file_content)
{
	FILE *fp;
	long file_size;	
	size_t bytes_read;
 
	//open file
	if (!(fp = fopen (file_name, file_mode))) {
		printf ("*** Unable to open file ***\n");	
		return NULL;
	}
 
	//get file size
	fseek (fp, 0, SEEK_END);
	file_size = ftell (fp);
	rewind (fp);
	printf("*** size = %ld ***\n", file_size);
 
	//check memory
	file_content = (char *) realloc (file_content, sizeof(char) * file_size);
	if (file_content == NULL) {
		printf("*** memory insufficient ***");
		fclose (fp);
		return NULL;
	}
 
	//get content
	bytes_read = fread (file_content, sizeof(char), file_size, fp);
	if (bytes_read != file_size) {
		printf("*** read failed ***");
		fclose (fp);
		return NULL;
	}
 
	//put EOS
	file_content[bytes_read-1] = '\0';	
 
	//clean	
	fclose (fp);
 
	//success
	return file_content;
}
 
 
int main (int argC, char *argV[])
{
	int	status = -1;
	char *file_content = (char *) malloc (2);
	if ((file_content = get_file_content ("metadata.txt", "r", file_content)) == NULL){
		status = 1;	
		goto FREE_BLOCK;
	}
 
	printf("\n#%s#\n", file_content);
 
 
	FREE_BLOCK:
		free (file_content);
 
	return 0;
}