I'm still working on my project , I added the remain of rooted files for extreme compression to be lossless ..... But files have weird data when are written .......
The Code :
Code: Select all
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdint.h>
#include <gmp.h>
int main(void)
{
FILE * fr, * fw;
char input[201];
char output[201];
unsigned long int size = 0;
unsigned long int rt;
unsigned char ch[5] = {112,111,119,101,114};
unsigned char plus[4]={112,108,117,115};
printf("Enter filename : ");
fgets(input, 200, stdin);
input[strlen (input) - 1] = '\0';
fr = fopen(input, "rb");
if (fr == NULL)
{
fprintf(stderr, "Error during opening of file %s\n", input);
perror("");
return 1;
}
fseek(fr, 0L, SEEK_END);
size = ftell(fr);
fseek(fr, 0L, SEEK_SET);
if (size == -1)
{
fprintf(stderr, "Size doesn't match\n'");
perror("");
return 1;
}
if ( size > SIZE_MAX)
{
fprintf(stderr, "The size of file is greater than acceptable\n");
perror("");
return 1;
}
unsigned char * buf = NULL;
buf = malloc((size_t)size);
if(buf == NULL)
{
fprintf(stderr, "Buffer failure\n");
perror("");
return 1;
}
int r;
r = fread(buf, size, 1, fr);
printf("%d\n", r);
if (ferror(fr))
{
fprintf(stderr, "Error during reading from file %s\n", input);
perror("");
fclose(fr);
return 1;
}
fclose(fr);
fr = NULL;
mpz_t x;
mpz_init(x);
mpz_t y;
mpz_init(y);
mpz_import(x, size, 1, (size_t)1u, 0, 0, buf);
if (size<=15)
rt = 1;
else if((size>15)&&(size<=100))
rt = 9;
else if((size>100)&&(size<=1000))
rt = 99;
else if((size>1000)&&(size<=10000))
rt = 999;
else if((size>10000)&&(size<=100000))
rt = 9999;
else if((size>100000)&&(size<=1000000))
rt = 99999;
else if((size>1000000)&&(size<=10000000))
rt = 999999;
else if((size>10000000)&&(100000000))
rt = 9999999;
else
rt = 99999999;
mpz_root (y, x, rt);
mpz_t root;
mpz_init(root);
mpz_t remain;
mpz_init(remain);
mpz_rootrem (root, remain, y, rt);
int rootnum = 0;
unsigned long int num = rt;
do
{
num = num/10;
++rootnum;
}while(num != 0);
printf("\nEnter compressed filename : ");
fgets(output, 200, stdin);
output[strlen (output) - 1] = '\0';
memset (buf, 0u, size);
mpz_export(buf, NULL, 1, (size_t)1u, 0, 0, y);
fw = fopen(output, "wb");
if (fw == NULL) {
fprintf(stderr, "Error during opening of file %s\n", output);
perror("");
return 1;
}
fwrite(buf, mpz_sizeinbase(y, 10), 1, fw);
if (ferror(fw)) {
fprintf(stderr, "Error during writing to file %s\n", output);
perror("");
fclose(fw);
return 1;
}
fclose(fw);
fw = fopen(output, "ab+");
if(fw == NULL)
printf("File can't be written\n'");
if(ferror(fw))
{
fprintf(stderr, "Error during writing to file %s\n", output);
perror("");
fclose(fw);
return 1;
}
fwrite(ch, 5, 1, fw);
fclose(fw);
fw = fopen(output, "ab");
if(fw == NULL)
printf("File can't be written\n'");
if(ferror(fw))
{
fprintf(stderr, "Error during writing to file %s\n", output);
perror("");
fclose(fw);
return 1;
}
int w;
w = fwrite(&rt, rootnum, 1, fw);
printf("%d\n", w);
fclose(fw);
fw = fopen(output, "ab");
if(fw == NULL)
printf("File can't be written\n'");
if(ferror(fw))
{
fprintf(stderr, "Error during writing to file %s\n", output);
perror("");
fclose(fw);
return 1;
}
fwrite(plus, 4, 1, fw);
fclose(fw);
fw = fopen(output, "ab");
if(fw == NULL)
printf("File can't be written\n'");
if(ferror(fw))
{
fprintf(stderr, "Error during writing to file %s\n", output);
perror("");
fclose(fw);
return 1;
}
fwrite(remain, mpz_sizeinbase(remain, 10), 1, fw);
fclose(fw);
free(buf);
mpz_clear(x);
mpz_clear(y);
return 0;
}Screenshot
This is another file compressed from Mike Oldfield Secrets and Far Above The Clouds from YouTube :
Screenshot
This is worse than the 2 former files , It has two 0E and filename and pluspower in it ! :
Screenshot
These are not acceptable and reasonable ........ Is there any GMP pro to say why these trash data are written on files ?
Thanks