#pragma once
#include <fcntl.h>
#ifndef _POSIX_SOURCE // No posix.
#include <stdio.h>
#endif
#include <stdint.h>

typedef struct Packfile_ {
#ifdef _POSIX_SOURCE
  int fd; // File descriptor.
#else
  FILE* fp;
#endif
  uint32_t pos; // position.
  uint32_t start, end; // file limits.
} Packfile;

// Packfile manipulation. Automatically allocated and freed (with open and close).

// Basic.
int pack_check(const char* filename);
int pack_files(const char* outfile, const char** infiles, const uint32_t nfiles);
int pack_open(Packfile* file, const char* packfile, const char* filename);
ssize_t pack_read(Packfile* file, void* buf, const size_t count);
off_t pack_seek(Packfile* file, off_t offset, int whence);
long pack_tell(Packfile* file);
int pack_close(Packfile* file);

// Fancy stuff.
void* pack_readfile(const char* packfile, const char* filename, uint32_t* filesize);
char** pack_listfiles(const char* packfile, uint32_t* nfiles);