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@okyanusoz
Created July 24, 2022 16:29
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C code to print the size of file(s) in a human friendly format
#include <stdio.h>
#include <ftw.h>
#include <sys/stat.h>
#include <sys/dir.h>
#include <dirent.h>
void printbytes(char *filename, long l)
{
printf("%s: ", filename);
if (l < 1000)
{
printf("%ld bytes\n", l);
return;
}
if (l < 1000000)
{
printf("%f KB\n", l / 1000.0);
return;
}
if (l < 1000000000)
{
printf("%f MB\n", l / 1000000.0);
return;
}
if (l < 1000000000000)
{
printf("%f GB", l / 1000000000.0);
return;
}
if (l < 1000000000000000)
{
printf("%f TB", l / 1000000000000.0);
return;
}
printf("%f PB", l / 1000000000000000.0);
printf("\n");
}
long getfilesize(char *path)
{
FILE *fp = fopen(path, "r");
if (!fp)
{
return -1;
}
fseek(fp, 0, SEEK_END);
long s = ftell(fp);
fclose(fp);
return s;
}
int main(int argc, char *argv[])
{
long total = 0;
if (argc == 1)
{
printf("Usage: %s [file1] [file2] [file3] ...\n", argv[0]);
return 1;
}
for (int i = 1; i < argc; i++)
{
char *path = argv[i];
struct stat st;
if (stat(path, &st) != 0)
{
fprintf(stderr, "Could not open %s, skipping...\n", path);
continue;
}
if (S_ISDIR(st.st_mode))
{
fprintf(stderr, "%s is a directory.\nTo get the size of a directory, please use wildcards.\n", path);
continue;
}
long size = getfilesize(path);
if (size == -1)
{
fprintf(stderr, "Could not open %s, skipping...\n", path);
continue;
}
printbytes(path, size);
total += size;
}
if(argc > 2) {
printbytes("\033[0;34mTotal", total);
printf("\033[0m");
}
return 0;
}
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