#ifndef COSMOPOLITAN_LIBC_ZIPOS_ZIPOS_H_
#define COSMOPOLITAN_LIBC_ZIPOS_ZIPOS_H_
#include "libc/calls/calls.h"
#include "libc/intrin/nopl.h"
#include "libc/nexgen32e/threaded.h"
#if !(__ASSEMBLER__ + __LINKER__ + 0)
COSMOPOLITAN_C_START_

struct stat;
struct iovec;

struct ZiposUri {
  const char *path;
  size_t len;
};

struct ZiposHandle {
  struct ZiposHandle *next;
  size_t size;    /* byte length of `mem` */
  size_t mapsize; /* total size of this struct */
  size_t pos;     /* read/write byte offset state */
  uint32_t cfile; /* central directory entry rva */
  uint8_t *mem;   /* points to inflated data or uncompressed image */
  uint8_t data[]; /* uncompressed file memory */
};

struct Zipos {
  uint8_t *map;
  uint8_t *cdir;
  struct ZiposHandle *freelist;
};

void __zipos_lock(void) hidden;
void __zipos_unlock(void) hidden;
int __zipos_close(int) hidden;
struct Zipos *__zipos_get(void) pureconst hidden;
void __zipos_free(struct Zipos *, struct ZiposHandle *) hidden;
ssize_t __zipos_parseuri(const char *, struct ZiposUri *) hidden;
ssize_t __zipos_find(struct Zipos *, const struct ZiposUri *);
int __zipos_open(const struct ZiposUri *, unsigned, int) hidden;
int __zipos_stat(const struct ZiposUri *, struct stat *) hidden;
int __zipos_fstat(const struct ZiposHandle *, struct stat *) hidden;
int __zipos_stat_impl(struct Zipos *, size_t, struct stat *) hidden;
ssize_t __zipos_read(struct ZiposHandle *, const struct iovec *, size_t,
                     ssize_t) hidden;
ssize_t __zipos_write(struct ZiposHandle *, const struct iovec *, size_t,
                      ssize_t) hidden;
int64_t __zipos_lseek(struct ZiposHandle *, int64_t, unsigned) hidden;
int __zipos_fcntl(int, int, uintptr_t) hidden;
int __zipos_notat(int, const char *) hidden;

#ifdef _NOPL0
#define __zipos_lock()   _NOPL0("__threadcalls", __zipos_lock)
#define __zipos_unlock() _NOPL0("__threadcalls", __zipos_unlock)
#else
#define __zipos_lock()   (__threaded ? __zipos_lock() : 0)
#define __zipos_unlock() (__threaded ? __zipos_unlock() : 0)
#endif

COSMOPOLITAN_C_END_
#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
#endif /* COSMOPOLITAN_LIBC_ZIPOS_ZIPOS_H_ */