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lab 4,5 #203

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923f5e8
laba 4
MagicGiant Jan 14, 2022
4d5f575
laba 5
MagicGiant Jan 14, 2022
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321 changes: 321 additions & 0 deletions 4.c
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Original file line number Diff line number Diff line change
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#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdbool.h>
#include "notation.h"

FILE* file;
int ID3_size;

char APIC[] = "APIC";
char TXXX[] = "TXXX";

void error(char comment[])
{
printf("%s\n", comment);
printf("--error--\n");
printf("____________________\n");
exit(1);
}

bool is_frame(char* arr)
{
if (strcmp(APIC, arr) == 0 || strcmp(TXXX, arr) == 0)
return 0;
for (int i = 0; i < 3; i++)
if (arr[i] < 'A' || arr[i]>'Z')
return 0;
if ((arr[3] < 'A' || arr[3]>'Z') && (arr[3] < '0' || arr[3]>'9'))
return 0;
return 1;
}
void shift_file(int shift_it, int n)
{
FILE* save = fopen("saving.sus", "w+b");
int size = 0;
fseek(file, shift_it, SEEK_SET);
fseek(save, 0, SEEK_SET);
while (!feof(file))
{
int c = getc(file);
putc(c, save);
size++;
}
fseek(file, shift_it + n, SEEK_SET);
fseek(save, 0, SEEK_SET);
for (int i = 0; i < size; i++)
{
int c = getc(save);
putc(c, file);
}
fclose(save);
remove("saving.sus");
}
int scan_size(int number)
{
char* bits = (char*)malloc(number * 7 + 1);
bits[number * 7] = 0;
for (int i = 0; i < number; i++)
{
int data = 0;
fread(&data, 1, 1, file);
bits = get_10_2(data, 7, i, bits);
}
int data = get_2_10(bits);
free(bits);
return data;
}
void print_size(int data)
{
char* bits = (char*)malloc(33);
bits[32] = 0;
bits = get_10_2(data, 32, 0, bits);
char new_bits[33];
new_bits[32] = 0;
int j = 3;
for (int i = 28; i >= 0; i--)
{
if ((i + 3) % 8 == 0)
{
new_bits[i + j] = '0';
j--;
}
new_bits[i + j] = bits[i + 3];
}
free(bits);
for (int i = 0; i < 4; i++)
{
char arr[9];
arr[8] = 0;
for (int k = i * 8; k < (i + 1) * 8; k++)
arr[k - i * 8] = new_bits[k];
putc(get_2_10(arr), file);
}
}
void read_file(char* your_frame)
{
fseek(file, 10, SEEK_SET);
bool code = 0;
if (strlen(your_frame) == 4)
code = 1;

int it = 0;
while (1)
{
char frame[5];
frame[4] = 0;
fread(frame, 4, 1, file);

if (code == 1)
while (1)
{
if (!is_frame(frame))
{
printf("*WARNING! NOT FOUND THIS FRAME\n");
return;
}
if (strcmp(frame, your_frame) == 0)
break;
else
{
fseek(file, 2 + scan_size(4), SEEK_CUR);
fread(frame, 4, 1, file);
}
}

if (!is_frame(frame))
return;
int frame_size = 0;
frame_size = scan_size(4);

fseek(file, 2, SEEK_CUR);
printf("%s:", frame);
for (int i = 0; i < frame_size; i++)
{
char data = 0;
fread(&data, 1, 1, file);
printf("%c", data);
}
if (code == 1)
{
printf("\n");
return;
}
printf("\n");
}
}
void write_file(char* your_frame, char* data)
{
fseek(file, 6, SEEK_SET);
ID3_size = scan_size(4);
int cursor = 0;
if (strlen(your_frame) != 4)
error("*YOUR FRAME MUST BE HAVE SIZE FOUR");
if (!is_frame(your_frame))
{
printf("*YOUR FRAME MUST BE HAVE ONLY CAPITAL ENGLISH LETTERS,\n");
printf("AND LAST CHAPTER CAN BE NUMBER\n");
error("");
}

fseek(file, 10, SEEK_SET);

char frame[5];
frame[4] = 0;

fread(frame, 4, 1, file);
cursor += 14;

while (1)
{

if (strcmp(frame, your_frame) == 0)
break;
else
{
if (!is_frame(frame))
{
shift_file(10, 11 + strlen(data));
fseek(file, 10, SEEK_SET);
for (int i = 0; i < 4; i++)
putc(your_frame[i], file);
print_size(strlen(data)+1);
fseek(file, 2, SEEK_CUR);
putc(32, file);
for (int i = 0; i < strlen(data); i++)
putc(data[i], file);
fseek(file, 6, SEEK_SET);
print_size(ID3_size + 11 + strlen(data));
return;
}
int size = scan_size(4);
fseek(file, 2 + size, SEEK_CUR);
fread(frame, 4, 1, file);
cursor += 10 + size;
}
}
int size_data = scan_size(4);
int ur_size_data = strlen(data);
fseek(file, cursor, SEEK_SET);
print_size(ur_size_data+1);
shift_file(cursor + 6 + size_data, ur_size_data-size_data+1);
fseek(file, cursor + 6, SEEK_SET);
putc(32, file);
for (int i = 0; i < ur_size_data; i++)
putc(data[i], file);
fseek(file, 6, SEEK_SET);
print_size(ID3_size-size_data+ur_size_data+1);

}
void del(char your_frame[])
{
fseek(file, 6, SEEK_SET);
ID3_size = scan_size(4);
if (strlen(your_frame) != 4)
error("*YOUR FRAME MUST BE HAVE SIZE FOUR");
char frame[5];
frame[4] = 0;
fread(frame, 4, 1, file);
int cursor = 14;
while (1)
{

if (strcmp(frame, your_frame) == 0)
break;
else
{
if (!is_frame(frame))
{
printf("*WARNING! NOT FOUND THIS FRAME");
return;
}
int size = scan_size(4);
fseek(file, 2 + size, SEEK_CUR);
fread(frame, 4, 1, file);
cursor += 10 + size;
}
}
int frame_size = scan_size(4);
shift_file(cursor + 2 + frame_size, -(frame_size + 10));
printf("FRAME '%s' was DELITE\n", your_frame);
}
int main(int argc, char** argv)
{
bool filepath = false;
bool com = false;
int i = 1;
printf("____________________\n");
while (i < argc)
{
char* command;
command = strtok(argv[i], "=");
if (strcmp(command, "--filepath") == 0)
{
filepath = true;
command = strtok(NULL, "=");
file = fopen(command, "r+b");
if (!file)
error("*NOT FOUND FILE PATH");
}
if (strcmp(command, "--show") == 0)
{
com = true;
char ch[] = "*";
read_file(ch);
}
if (strcmp(command, "--get") == 0)
{
com = true;
command = strtok(NULL, "=");
read_file(command);
}
if (strcmp(command, "--set") == 0)
{

if (filepath == false)
error("* NOT WAS ENTER FILE PATH");
com = true;
command = strtok(NULL, "=");
char* your_frame = command;
i++;
command = strtok(argv[i], "=");
if (strcmp(command, "--value") == 0)
command = strtok(NULL, "=");
else
error("*AFTER '--set' MUST BE '--value'");
if (command == NULL)
error("*PLEASE, DON'T WRITE SPACE TO FIRST CHAPTER");
char* arr = (char*)malloc(strlen(command+1));
arr[strlen(command)] = 0;
arr = command;
i++;
for (int j = i; j < argc; j++)
{
arr = merge(arr, merge(" ", argv[i]));
i++;
}
printf("%s = %s\n", your_frame, arr);
write_file(your_frame, arr);
}
if (strcmp(command, "--delite")==0)
{
com = true;
if (filepath == false)
error("* NOT WAS ENTER FILE PATH");
command=strtok(NULL, "=");
if (command == NULL)
error("* NOT WAS ENTER FRAME FOR DELITE");
del(command);
}
i++;
}
if (filepath == false)
error("* NOT WAS ENTER FILE PATH");
if (com == false)
printf("\n*WARNING! NOT WAS ENTER COMMAND\n");

printf("--nice--\n");
printf("____________________\n");
return 0;
}
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