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#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "files.h"
int nof_digits(int n)
{
int c=0;
do {
c += 1;
n /= 10;
} while(n);
return c;
}
int nof_lines(char* filename) {
int nof_lines = 0;
FILE* f = fopen(filename,"r");
int c = 0;
while(EOF != (c=fgetc(f)))
if(c=='\n') ++nof_lines;
fclose(f);
return nof_lines;
}
char* create_fn(char* dirname, int i, char* ext)
{ char* fn = malloc((strlen(dirname)+1+nof_digits(i)+strlen(ext)+1)
*sizeof(char));
sprintf(fn,"%s/%d%s", dirname,i,ext);
return fn;
}
FILE* open_file(char* dirname, int i, char* ext, char* mode)
{
FILE* f;
char* fn = create_fn(dirname, i, ext);
sprintf(fn,"%s/%d%s", dirname,i,ext);
f = fopen(fn, mode);
free(fn);
return f;
}
FILE** open_files(int nof_vars, char* dirname, char* ext, char* mode)
{
FILE** files = malloc(nof_vars * sizeof(FILE*));
int i;
for(i=0; i<nof_vars; ++i){
files[i] = open_file(dirname, i, ext, mode);
}
return files;
}
void free_files(int nof_vars, FILE** files){
int i;
for(i=0; i<nof_vars; ++i) fclose(files[i]);
free(files);
}
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