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const zlib = (func(): string =
let res = staticExec("pkg-config --libs --silence-errors zlib")
if res != "":
return res
)()
when zlib == "":
error("zlib not found")
{.passL: zlib.}
const
Z_NO_FLUSH* = cint(0)
Z_PARTIAL_FLUSH* = cint(1)
Z_SYNC_FLUSH* = cint(2)
Z_FULL_FLUSH* = cint(3)
Z_FINISH* = cint(4)
Z_BLOCK* = cint(5)
Z_TREES* = cint(6)
const
Z_OK* = cint(0)
Z_STREAM_END* = cint(1)
Z_NEED_DICT* = cint(2)
Z_ERRNO* = cint(-1)
Z_STREAM_ERROR* = cint(-2)
Z_DATA_ERROR* = cint(-3)
Z_MEM_ERROR* = cint(-4)
Z_BUF_ERROR* = cint(-5)
Z_VERSION_ERROR* = cint(-6)
const
Z_BINARY* = cint(0)
Z_TEXT* = cint(1)
Z_ASCII* = Z_TEXT
Z_UNKNOWN* = cint(2)
type
alloc_func* {.importc, header: "zlib.h".} = proc (opaque: pointer,
items: cuint, size: cuint): pointer {.cdecl.}
free_func* {.importc, header: "zlib.h".} = proc (opaque: pointer,
address: pointer) {.cdecl.}
internal_state* {.importc, header: "zlib.h".} = object
z_stream* {.importc, header: "zlib.h".} = object
next_in*: ptr uint8 # next input byte
avail_in*: cuint # number of bytes available in next_in
total_in*: culong # total number of input bytes read so far
next_out*: ptr uint8 # next output byte will go here
avail_out*: cuint # remaining free space at next_out
total_out*: culong # total number of bytes output so far
msg*: cstring # last error message, NULL if no error
state*: ptr internal_state # not visible by applications
zalloc*: alloc_func # used to allocate the internal state
zfree*: free_func # used to free the internal state
opaque*: pointer # private data object passed to zalloc and zfree
data_type*: cint # best guess about the data type: binary or text
# for deflate, or the decoding state for inflate
adler*: culong # Adler-32 or CRC-32 value of the uncompressed data
reserved*: culong # reserved for future use
z_streamp* = ptr z_stream
{.push header: "zlib.h", importc, cdecl.}
proc inflateInit*(strm: z_streamp): cint
proc inflate*(strm: z_streamp, flush: cint): cint
proc inflateEnd*(strm: z_streamp): cint
proc compress*(dest: ptr uint8, destLen: ptr culong, source: ptr uint8,
sourceLen: culong): cint
proc compressBound*(sourceLen: culong): culong
proc uncompress*(dest: ptr uint8, destLen: ptr culong, source: ptr uint8,
sourceLen: culong): cint
proc crc32*(crc: culong, buf: ptr uint8, len: cuint): culong
{.pop.}
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