#include <stdio.h>
#include <string.h>
const int long long;
const int N = 2e5;
void creat_archive(char* name_arc, int count, char* filelochek[]){
    int i;
    FILE* file_arc = fopen(name_arc, "wb");
    FILE* file;
    int name_size[N];
    for (i = 5; i < count; i++){
        file = fopen(filelochek[i], "rb");
        if (file == NULL)
            continue;
        fseek(file, 0, SEEK_END);
        name_size[i - 5] = ftell(file);
        fseek(file, 0, SEEK_SET);
        fclose(file);
    }
    for (i = 0; i < count - 5; i++)
        fprintf(file_arc, "<%s:%llu>", filelochek[i + 5], name_size[i]);
        fprintf(file_arc, "\n");
    for (i = 5; i < count; i++){
        file = fopen(filelochek[i], "rb");
        if (file == NULL){
            printf("file not added");
        } else{
            printf("file added");}
        fclose(file);}
}
void extract_archive(char* name_arc){
     int now_time = 0;
     int first_time = 0;
     int size;
     int file_read;
    FILE* file_arc = fopen(name_arc, "rb");
    FILE* file;
    char name_of_file[N];
    while ((file_read = getc(file_arc)) != EOF) { //пока не пустой
        first_time++;
        if (file_read == '\n'){
            break;}
    }
    fseek(file_arc, 0, SEEK_SET);
    while (fscanf(file_arc, "<%s:%llu>", name_of_file, &size) != 0){
        file = fopen(name_of_file, "wb");
        if (file == NULL)
            break;
        now_time = ftell(file_arc);
        fseek(file_arc, first_time, SEEK_SET);
        first_time += size;\
        while (size-- > 0)
            putc((file_read = getc(file_arc)), file);
        fseek(file_arc, now_time, SEEK_SET);
        fclose(file); }
    printf("unzipping");
}
void list_archive(char* name_arc){
    FILE* file_arc = fopen(name_arc, "rb");
    char name_of_file[N];
    int read = 0;
    int file_read;
    int i;
    printf("File list_archive:\n");
    while ((file_read = getc(file_arc)) != EOF) {
        if (file_read == ':'){
            read = 0;
            printf("\t%s\n", name_of_file);
        }
        if (read){
            name_of_file[i] = file_read;
            i++;
        }
        if (file_read == '<'){
            read = 1;
            i = 0;
        }
    }
    fclose(file_arc); }
int main(int argc, char* argv[]){
    FILE* file_arc;
    char* name_arc;
    for (int i = 0; i < argc; i++){
        if(!strcmp("--file", argv[i])){
            name_arc = argv[i + 1];}
        if(!strcmp("--creat", argv[i])){
            creat_archive(name_arc, argc, argv);}
        if(!strcmp("--extract", argv[i])){
            extract_archive(name_arc);}
        if(!strcmp("--list", argv[i])){
            list_archive(name_arc);
        }
    }
}