199767f8919635c4928607450d9e0abb932109ceToomas Soome

199767f8919635c4928607450d9e0abb932109ceToomas Soome

199767f8919635c4928607450d9e0abb932109ceToomas Soome#include "gzguts.h"

199767f8919635c4928607450d9e0abb932109ceToomas Soome#include "zutil.h"

199767f8919635c4928607450d9e0abb932109ceToomas Soome

199767f8919635c4928607450d9e0abb932109ceToomas Soome#if defined(_WIN32) && !defined(__BORLANDC__)

199767f8919635c4928607450d9e0abb932109ceToomas Soome# define LSEEK _lseeki64

199767f8919635c4928607450d9e0abb932109ceToomas Soome#else

199767f8919635c4928607450d9e0abb932109ceToomas Soome#if defined(_LARGEFILE64_SOURCE) && _LFS64_LARGEFILE-0

199767f8919635c4928607450d9e0abb932109ceToomas Soome# define LSEEK lseek64

199767f8919635c4928607450d9e0abb932109ceToomas Soome#else

199767f8919635c4928607450d9e0abb932109ceToomas Soome# define LSEEK lseek

199767f8919635c4928607450d9e0abb932109ceToomas Soome#endif

199767f8919635c4928607450d9e0abb932109ceToomas Soome#endif

199767f8919635c4928607450d9e0abb932109ceToomas Soome

199767f8919635c4928607450d9e0abb932109ceToomas Soomelocal void gz_reset OF((gz_statep));

199767f8919635c4928607450d9e0abb932109ceToomas Soomelocal gzFile gz_open OF((const void *, int, const char *));

199767f8919635c4928607450d9e0abb932109ceToomas Soome

199767f8919635c4928607450d9e0abb932109ceToomas Soome#if defined UNDER_CE

199767f8919635c4928607450d9e0abb932109ceToomas Soome

199767f8919635c4928607450d9e0abb932109ceToomas Soomechar ZLIB_INTERNAL *gz_strwinerror (error)

199767f8919635c4928607450d9e0abb932109ceToomas Soome DWORD error;

199767f8919635c4928607450d9e0abb932109ceToomas Soome{

199767f8919635c4928607450d9e0abb932109ceToomas Soome static char buf[1024];

199767f8919635c4928607450d9e0abb932109ceToomas Soome

199767f8919635c4928607450d9e0abb932109ceToomas Soome wchar_t *msgbuf;

199767f8919635c4928607450d9e0abb932109ceToomas Soome DWORD lasterr = GetLastError();

199767f8919635c4928607450d9e0abb932109ceToomas Soome DWORD chars = FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM

199767f8919635c4928607450d9e0abb932109ceToomas Soome | FORMAT_MESSAGE_ALLOCATE_BUFFER,

199767f8919635c4928607450d9e0abb932109ceToomas Soome NULL,

199767f8919635c4928607450d9e0abb932109ceToomas Soome error,

199767f8919635c4928607450d9e0abb932109ceToomas Soome 0, /* Default language */

199767f8919635c4928607450d9e0abb932109ceToomas Soome (LPVOID)&msgbuf,

199767f8919635c4928607450d9e0abb932109ceToomas Soome 0,

199767f8919635c4928607450d9e0abb932109ceToomas Soome NULL);

199767f8919635c4928607450d9e0abb932109ceToomas Soome if (chars != 0) {

199767f8919635c4928607450d9e0abb932109ceToomas Soome /* If there is an \r\n appended, zap it. */

199767f8919635c4928607450d9e0abb932109ceToomas Soome if (chars >= 2

199767f8919635c4928607450d9e0abb932109ceToomas Soome && msgbuf[chars - 2] == '\r' && msgbuf[chars - 1] == '\n') {

199767f8919635c4928607450d9e0abb932109ceToomas Soome chars -= 2;

199767f8919635c4928607450d9e0abb932109ceToomas Soome msgbuf[chars] = 0;

199767f8919635c4928607450d9e0abb932109ceToomas Soome }

199767f8919635c4928607450d9e0abb932109ceToomas Soome

199767f8919635c4928607450d9e0abb932109ceToomas Soome if (chars > sizeof (buf) - 1) {

199767f8919635c4928607450d9e0abb932109ceToomas Soome chars = sizeof (buf) - 1;

199767f8919635c4928607450d9e0abb932109ceToomas Soome msgbuf[chars] = 0;

199767f8919635c4928607450d9e0abb932109ceToomas Soome }

199767f8919635c4928607450d9e0abb932109ceToomas Soome

199767f8919635c4928607450d9e0abb932109ceToomas Soome wcstombs(buf, msgbuf, chars + 1);

199767f8919635c4928607450d9e0abb932109ceToomas Soome LocalFree(msgbuf);

199767f8919635c4928607450d9e0abb932109ceToomas Soome }

199767f8919635c4928607450d9e0abb932109ceToomas Soome else {

199767f8919635c4928607450d9e0abb932109ceToomas Soome sprintf(buf, "unknown win32 error (%ld)", error);

199767f8919635c4928607450d9e0abb932109ceToomas Soome }

199767f8919635c4928607450d9e0abb932109ceToomas Soome

199767f8919635c4928607450d9e0abb932109ceToomas Soome SetLastError(lasterr);

199767f8919635c4928607450d9e0abb932109ceToomas Soome return buf;

199767f8919635c4928607450d9e0abb932109ceToomas Soome}

199767f8919635c4928607450d9e0abb932109ceToomas Soome

199767f8919635c4928607450d9e0abb932109ceToomas Soome#endif /* UNDER_CE */

199767f8919635c4928607450d9e0abb932109ceToomas Soome

199767f8919635c4928607450d9e0abb932109ceToomas Soomelocal void gz_reset(state)

199767f8919635c4928607450d9e0abb932109ceToomas Soome gz_statep state;

199767f8919635c4928607450d9e0abb932109ceToomas Soome{

199767f8919635c4928607450d9e0abb932109ceToomas Soome state->x.have = 0; /* no output data available */

199767f8919635c4928607450d9e0abb932109ceToomas Soome if (state->mode == GZ_READ) { /* for reading ... */

199767f8919635c4928607450d9e0abb932109ceToomas Soome state->eof = 0; /* not at end of file */

199767f8919635c4928607450d9e0abb932109ceToomas Soome state->past = 0; /* have not read past end yet */

199767f8919635c4928607450d9e0abb932109ceToomas Soome state->how = LOOK; /* look for gzip header */

199767f8919635c4928607450d9e0abb932109ceToomas Soome }

199767f8919635c4928607450d9e0abb932109ceToomas Soome state->seek = 0; /* no seek request pending */

199767f8919635c4928607450d9e0abb932109ceToomas Soome gz_error(state, Z_OK, NULL); /* clear error */

199767f8919635c4928607450d9e0abb932109ceToomas Soome state->x.pos = 0; /* no uncompressed data yet */

199767f8919635c4928607450d9e0abb932109ceToomas Soome state->strm.avail_in = 0; /* no input data yet */

199767f8919635c4928607450d9e0abb932109ceToomas Soome}

199767f8919635c4928607450d9e0abb932109ceToomas Soome

199767f8919635c4928607450d9e0abb932109ceToomas Soomelocal gzFile gz_open(path, fd, mode)

199767f8919635c4928607450d9e0abb932109ceToomas Soome const void *path;

199767f8919635c4928607450d9e0abb932109ceToomas Soome int fd;

199767f8919635c4928607450d9e0abb932109ceToomas Soome const char *mode;

199767f8919635c4928607450d9e0abb932109ceToomas Soome{

199767f8919635c4928607450d9e0abb932109ceToomas Soome gz_statep state;

199767f8919635c4928607450d9e0abb932109ceToomas Soome size_t len;

199767f8919635c4928607450d9e0abb932109ceToomas Soome int oflag;

199767f8919635c4928607450d9e0abb932109ceToomas Soome#ifdef O_CLOEXEC

199767f8919635c4928607450d9e0abb932109ceToomas Soome int cloexec = 0;

199767f8919635c4928607450d9e0abb932109ceToomas Soome#endif

199767f8919635c4928607450d9e0abb932109ceToomas Soome#ifdef O_EXCL

199767f8919635c4928607450d9e0abb932109ceToomas Soome int exclusive = 0;

199767f8919635c4928607450d9e0abb932109ceToomas Soome#endif

199767f8919635c4928607450d9e0abb932109ceToomas Soome

199767f8919635c4928607450d9e0abb932109ceToomas Soome /* check input */

199767f8919635c4928607450d9e0abb932109ceToomas Soome if (path == NULL)

199767f8919635c4928607450d9e0abb932109ceToomas Soome return NULL;

199767f8919635c4928607450d9e0abb932109ceToomas Soome

199767f8919635c4928607450d9e0abb932109ceToomas Soome /* allocate gzFile structure to return */

199767f8919635c4928607450d9e0abb932109ceToomas Soome state = (gz_statep)malloc(sizeof(gz_state));

199767f8919635c4928607450d9e0abb932109ceToomas Soome if (state == NULL)

199767f8919635c4928607450d9e0abb932109ceToomas Soome return NULL;

199767f8919635c4928607450d9e0abb932109ceToomas Soome state->size = 0; /* no buffers allocated yet */

199767f8919635c4928607450d9e0abb932109ceToomas Soome state->want = GZBUFSIZE; /* requested buffer size */

199767f8919635c4928607450d9e0abb932109ceToomas Soome state->msg = NULL; /* no error message yet */

199767f8919635c4928607450d9e0abb932109ceToomas Soome

199767f8919635c4928607450d9e0abb932109ceToomas Soome /* interpret mode */

199767f8919635c4928607450d9e0abb932109ceToomas Soome state->mode = GZ_NONE;

199767f8919635c4928607450d9e0abb932109ceToomas Soome state->level = Z_DEFAULT_COMPRESSION;

199767f8919635c4928607450d9e0abb932109ceToomas Soome state->strategy = Z_DEFAULT_STRATEGY;

199767f8919635c4928607450d9e0abb932109ceToomas Soome state->direct = 0;

199767f8919635c4928607450d9e0abb932109ceToomas Soome while (*mode) {

199767f8919635c4928607450d9e0abb932109ceToomas Soome if (*mode >= '0' && *mode <= '9')

199767f8919635c4928607450d9e0abb932109ceToomas Soome state->level = *mode - '0';

199767f8919635c4928607450d9e0abb932109ceToomas Soome else

199767f8919635c4928607450d9e0abb932109ceToomas Soome switch (*mode) {

199767f8919635c4928607450d9e0abb932109ceToomas Soome case 'r':

199767f8919635c4928607450d9e0abb932109ceToomas Soome state->mode = GZ_READ;

199767f8919635c4928607450d9e0abb932109ceToomas Soome break;

199767f8919635c4928607450d9e0abb932109ceToomas Soome#ifndef NO_GZCOMPRESS

199767f8919635c4928607450d9e0abb932109ceToomas Soome case 'w':

199767f8919635c4928607450d9e0abb932109ceToomas Soome state->mode = GZ_WRITE;

199767f8919635c4928607450d9e0abb932109ceToomas Soome break;

199767f8919635c4928607450d9e0abb932109ceToomas Soome case 'a':

199767f8919635c4928607450d9e0abb932109ceToomas Soome state->mode = GZ_APPEND;

199767f8919635c4928607450d9e0abb932109ceToomas Soome break;

199767f8919635c4928607450d9e0abb932109ceToomas Soome#endif

199767f8919635c4928607450d9e0abb932109ceToomas Soome case '+': /* can't read and write at the same time */

199767f8919635c4928607450d9e0abb932109ceToomas Soome free(state);

199767f8919635c4928607450d9e0abb932109ceToomas Soome return NULL;

199767f8919635c4928607450d9e0abb932109ceToomas Soome case 'b': /* ignore -- will request binary anyway */

199767f8919635c4928607450d9e0abb932109ceToomas Soome break;

199767f8919635c4928607450d9e0abb932109ceToomas Soome#ifdef O_CLOEXEC

199767f8919635c4928607450d9e0abb932109ceToomas Soome case 'e':

199767f8919635c4928607450d9e0abb932109ceToomas Soome cloexec = 1;

199767f8919635c4928607450d9e0abb932109ceToomas Soome break;

199767f8919635c4928607450d9e0abb932109ceToomas Soome#endif

199767f8919635c4928607450d9e0abb932109ceToomas Soome#ifdef O_EXCL

199767f8919635c4928607450d9e0abb932109ceToomas Soome case 'x':

199767f8919635c4928607450d9e0abb932109ceToomas Soome exclusive = 1;

199767f8919635c4928607450d9e0abb932109ceToomas Soome break;

199767f8919635c4928607450d9e0abb932109ceToomas Soome#endif

199767f8919635c4928607450d9e0abb932109ceToomas Soome case 'f':

199767f8919635c4928607450d9e0abb932109ceToomas Soome state->strategy = Z_FILTERED;

199767f8919635c4928607450d9e0abb932109ceToomas Soome break;

199767f8919635c4928607450d9e0abb932109ceToomas Soome case 'h':

199767f8919635c4928607450d9e0abb932109ceToomas Soome state->strategy = Z_HUFFMAN_ONLY;

199767f8919635c4928607450d9e0abb932109ceToomas Soome break;

199767f8919635c4928607450d9e0abb932109ceToomas Soome case 'R':

199767f8919635c4928607450d9e0abb932109ceToomas Soome state->strategy = Z_RLE;

199767f8919635c4928607450d9e0abb932109ceToomas Soome break;

199767f8919635c4928607450d9e0abb932109ceToomas Soome case 'F':

199767f8919635c4928607450d9e0abb932109ceToomas Soome state->strategy = Z_FIXED;

199767f8919635c4928607450d9e0abb932109ceToomas Soome break;

199767f8919635c4928607450d9e0abb932109ceToomas Soome case 'T':

199767f8919635c4928607450d9e0abb932109ceToomas Soome state->direct = 1;

199767f8919635c4928607450d9e0abb932109ceToomas Soome break;

199767f8919635c4928607450d9e0abb932109ceToomas Soome default: /* could consider as an error, but just ignore */

199767f8919635c4928607450d9e0abb932109ceToomas Soome ;

199767f8919635c4928607450d9e0abb932109ceToomas Soome }

199767f8919635c4928607450d9e0abb932109ceToomas Soome mode++;

199767f8919635c4928607450d9e0abb932109ceToomas Soome }

199767f8919635c4928607450d9e0abb932109ceToomas Soome

199767f8919635c4928607450d9e0abb932109ceToomas Soome /* must provide an "r", "w", or "a" */

199767f8919635c4928607450d9e0abb932109ceToomas Soome if (state->mode == GZ_NONE) {

199767f8919635c4928607450d9e0abb932109ceToomas Soome free(state);

199767f8919635c4928607450d9e0abb932109ceToomas Soome return NULL;

199767f8919635c4928607450d9e0abb932109ceToomas Soome }

199767f8919635c4928607450d9e0abb932109ceToomas Soome

199767f8919635c4928607450d9e0abb932109ceToomas Soome /* can't force transparent read */

199767f8919635c4928607450d9e0abb932109ceToomas Soome if (state->mode == GZ_READ) {

199767f8919635c4928607450d9e0abb932109ceToomas Soome if (state->direct) {

199767f8919635c4928607450d9e0abb932109ceToomas Soome free(state);

199767f8919635c4928607450d9e0abb932109ceToomas Soome return NULL;

199767f8919635c4928607450d9e0abb932109ceToomas Soome }

199767f8919635c4928607450d9e0abb932109ceToomas Soome state->direct = 1; /* for empty file */

199767f8919635c4928607450d9e0abb932109ceToomas Soome }

199767f8919635c4928607450d9e0abb932109ceToomas Soome

199767f8919635c4928607450d9e0abb932109ceToomas Soome /* save the path name for error messages */

199767f8919635c4928607450d9e0abb932109ceToomas Soome#ifdef _WIN32

199767f8919635c4928607450d9e0abb932109ceToomas Soome if (fd == -2) {

199767f8919635c4928607450d9e0abb932109ceToomas Soome len = wcstombs(NULL, path, 0);

199767f8919635c4928607450d9e0abb932109ceToomas Soome if (len == (size_t)-1)

199767f8919635c4928607450d9e0abb932109ceToomas Soome len = 0;

199767f8919635c4928607450d9e0abb932109ceToomas Soome }

199767f8919635c4928607450d9e0abb932109ceToomas Soome else

199767f8919635c4928607450d9e0abb932109ceToomas Soome#endif

199767f8919635c4928607450d9e0abb932109ceToomas Soome len = strlen((const char *)path);

199767f8919635c4928607450d9e0abb932109ceToomas Soome state->path = (char *)malloc(len + 1);

199767f8919635c4928607450d9e0abb932109ceToomas Soome if (state->path == NULL) {

199767f8919635c4928607450d9e0abb932109ceToomas Soome free(state);

199767f8919635c4928607450d9e0abb932109ceToomas Soome return NULL;

199767f8919635c4928607450d9e0abb932109ceToomas Soome }

199767f8919635c4928607450d9e0abb932109ceToomas Soome#ifdef _WIN32

199767f8919635c4928607450d9e0abb932109ceToomas Soome if (fd == -2)

199767f8919635c4928607450d9e0abb932109ceToomas Soome if (len)

199767f8919635c4928607450d9e0abb932109ceToomas Soome wcstombs(state->path, path, len + 1);

199767f8919635c4928607450d9e0abb932109ceToomas Soome else

199767f8919635c4928607450d9e0abb932109ceToomas Soome *(state->path) = 0;

199767f8919635c4928607450d9e0abb932109ceToomas Soome else

199767f8919635c4928607450d9e0abb932109ceToomas Soome#endif

199767f8919635c4928607450d9e0abb932109ceToomas Soome#if !defined(NO_snprintf) && !defined(NO_vsnprintf)

199767f8919635c4928607450d9e0abb932109ceToomas Soome snprintf(state->path, len + 1, "%s", (const char *)path);

199767f8919635c4928607450d9e0abb932109ceToomas Soome#else

199767f8919635c4928607450d9e0abb932109ceToomas Soome strcpy(state->path, path);

199767f8919635c4928607450d9e0abb932109ceToomas Soome#endif

199767f8919635c4928607450d9e0abb932109ceToomas Soome

199767f8919635c4928607450d9e0abb932109ceToomas Soome /* compute the flags for open() */

199767f8919635c4928607450d9e0abb932109ceToomas Soome oflag =

199767f8919635c4928607450d9e0abb932109ceToomas Soome#ifdef O_LARGEFILE

199767f8919635c4928607450d9e0abb932109ceToomas Soome O_LARGEFILE |

199767f8919635c4928607450d9e0abb932109ceToomas Soome#endif

199767f8919635c4928607450d9e0abb932109ceToomas Soome#ifdef O_BINARY

199767f8919635c4928607450d9e0abb932109ceToomas Soome O_BINARY |

199767f8919635c4928607450d9e0abb932109ceToomas Soome#endif

199767f8919635c4928607450d9e0abb932109ceToomas Soome#ifdef O_CLOEXEC

199767f8919635c4928607450d9e0abb932109ceToomas Soome (cloexec ? O_CLOEXEC : 0) |

199767f8919635c4928607450d9e0abb932109ceToomas Soome#endif

199767f8919635c4928607450d9e0abb932109ceToomas Soome (state->mode == GZ_READ ?

199767f8919635c4928607450d9e0abb932109ceToomas Soome O_RDONLY :

199767f8919635c4928607450d9e0abb932109ceToomas Soome (O_WRONLY | O_CREAT |

199767f8919635c4928607450d9e0abb932109ceToomas Soome#ifdef O_EXCL

199767f8919635c4928607450d9e0abb932109ceToomas Soome (exclusive ? O_EXCL : 0) |

199767f8919635c4928607450d9e0abb932109ceToomas Soome#endif

199767f8919635c4928607450d9e0abb932109ceToomas Soome (state->mode == GZ_WRITE ?

199767f8919635c4928607450d9e0abb932109ceToomas Soome O_TRUNC :

199767f8919635c4928607450d9e0abb932109ceToomas Soome O_APPEND)));

199767f8919635c4928607450d9e0abb932109ceToomas Soome

199767f8919635c4928607450d9e0abb932109ceToomas Soome /* open the file with the appropriate flags (or just use fd) */

199767f8919635c4928607450d9e0abb932109ceToomas Soome state->fd = fd > -1 ? fd : (

199767f8919635c4928607450d9e0abb932109ceToomas Soome#ifdef _WIN32

199767f8919635c4928607450d9e0abb932109ceToomas Soome fd == -2 ? _wopen(path, oflag, 0666) :

199767f8919635c4928607450d9e0abb932109ceToomas Soome#endif

199767f8919635c4928607450d9e0abb932109ceToomas Soome open((const char *)path, oflag, 0666));

199767f8919635c4928607450d9e0abb932109ceToomas Soome if (state->fd == -1) {

199767f8919635c4928607450d9e0abb932109ceToomas Soome free(state->path);

199767f8919635c4928607450d9e0abb932109ceToomas Soome free(state);

199767f8919635c4928607450d9e0abb932109ceToomas Soome return NULL;

199767f8919635c4928607450d9e0abb932109ceToomas Soome }

199767f8919635c4928607450d9e0abb932109ceToomas Soome if (state->mode == GZ_APPEND)

199767f8919635c4928607450d9e0abb932109ceToomas Soome state->mode = GZ_WRITE; /* simplify later checks */

199767f8919635c4928607450d9e0abb932109ceToomas Soome

199767f8919635c4928607450d9e0abb932109ceToomas Soome /* save the current position for rewinding (only if reading) */

199767f8919635c4928607450d9e0abb932109ceToomas Soome if (state->mode == GZ_READ) {

199767f8919635c4928607450d9e0abb932109ceToomas Soome state->start = LSEEK(state->fd, 0, SEEK_CUR);

199767f8919635c4928607450d9e0abb932109ceToomas Soome if (state->start == -1) state->start = 0;

199767f8919635c4928607450d9e0abb932109ceToomas Soome }

199767f8919635c4928607450d9e0abb932109ceToomas Soome

199767f8919635c4928607450d9e0abb932109ceToomas Soome /* initialize stream */

199767f8919635c4928607450d9e0abb932109ceToomas Soome gz_reset(state);

199767f8919635c4928607450d9e0abb932109ceToomas Soome

199767f8919635c4928607450d9e0abb932109ceToomas Soome /* return stream */

199767f8919635c4928607450d9e0abb932109ceToomas Soome return (gzFile)state;

199767f8919635c4928607450d9e0abb932109ceToomas Soome}

199767f8919635c4928607450d9e0abb932109ceToomas Soome

199767f8919635c4928607450d9e0abb932109ceToomas SoomegzFile ZEXPORT gzopen(path, mode)

199767f8919635c4928607450d9e0abb932109ceToomas Soome const char *path;

199767f8919635c4928607450d9e0abb932109ceToomas Soome const char *mode;

199767f8919635c4928607450d9e0abb932109ceToomas Soome{

199767f8919635c4928607450d9e0abb932109ceToomas Soome return gz_open(path, -1, mode);

199767f8919635c4928607450d9e0abb932109ceToomas Soome}

199767f8919635c4928607450d9e0abb932109ceToomas Soome

199767f8919635c4928607450d9e0abb932109ceToomas SoomegzFile ZEXPORT gzopen64(path, mode)

199767f8919635c4928607450d9e0abb932109ceToomas Soome const char *path;

199767f8919635c4928607450d9e0abb932109ceToomas Soome const char *mode;

199767f8919635c4928607450d9e0abb932109ceToomas Soome{

199767f8919635c4928607450d9e0abb932109ceToomas Soome return gz_open(path, -1, mode);

199767f8919635c4928607450d9e0abb932109ceToomas Soome}

199767f8919635c4928607450d9e0abb932109ceToomas Soome

199767f8919635c4928607450d9e0abb932109ceToomas SoomegzFile ZEXPORT gzdopen(fd, mode)

199767f8919635c4928607450d9e0abb932109ceToomas Soome int fd;

199767f8919635c4928607450d9e0abb932109ceToomas Soome const char *mode;

199767f8919635c4928607450d9e0abb932109ceToomas Soome{

199767f8919635c4928607450d9e0abb932109ceToomas Soome char *path; /* identifier for error messages */

199767f8919635c4928607450d9e0abb932109ceToomas Soome gzFile gz;

199767f8919635c4928607450d9e0abb932109ceToomas Soome

199767f8919635c4928607450d9e0abb932109ceToomas Soome if (fd == -1 || (path = (char *)malloc(7 + 3 * sizeof(int))) == NULL)

199767f8919635c4928607450d9e0abb932109ceToomas Soome return NULL;

199767f8919635c4928607450d9e0abb932109ceToomas Soome#if !defined(NO_snprintf) && !defined(NO_vsnprintf)

199767f8919635c4928607450d9e0abb932109ceToomas Soome snprintf(path, 7 + 3 * sizeof(int), "<fd:%d>", fd); /* for debugging */

199767f8919635c4928607450d9e0abb932109ceToomas Soome#else

199767f8919635c4928607450d9e0abb932109ceToomas Soome sprintf(path, "<fd:%d>", fd); /* for debugging */

199767f8919635c4928607450d9e0abb932109ceToomas Soome#endif

199767f8919635c4928607450d9e0abb932109ceToomas Soome gz = gz_open(path, fd, mode);

199767f8919635c4928607450d9e0abb932109ceToomas Soome free(path);

199767f8919635c4928607450d9e0abb932109ceToomas Soome return gz;

199767f8919635c4928607450d9e0abb932109ceToomas Soome}

199767f8919635c4928607450d9e0abb932109ceToomas Soome

199767f8919635c4928607450d9e0abb932109ceToomas Soome#ifdef _WIN32

199767f8919635c4928607450d9e0abb932109ceToomas SoomegzFile ZEXPORT gzopen_w(path, mode)

199767f8919635c4928607450d9e0abb932109ceToomas Soome const wchar_t *path;

199767f8919635c4928607450d9e0abb932109ceToomas Soome const char *mode;

199767f8919635c4928607450d9e0abb932109ceToomas Soome{

199767f8919635c4928607450d9e0abb932109ceToomas Soome return gz_open(path, -2, mode);

199767f8919635c4928607450d9e0abb932109ceToomas Soome}

199767f8919635c4928607450d9e0abb932109ceToomas Soome#endif

199767f8919635c4928607450d9e0abb932109ceToomas Soome

199767f8919635c4928607450d9e0abb932109ceToomas Soomeint ZEXPORT gzbuffer(file, size)

199767f8919635c4928607450d9e0abb932109ceToomas Soome gzFile file;

199767f8919635c4928607450d9e0abb932109ceToomas Soome unsigned size;

199767f8919635c4928607450d9e0abb932109ceToomas Soome{

199767f8919635c4928607450d9e0abb932109ceToomas Soome gz_statep state;

199767f8919635c4928607450d9e0abb932109ceToomas Soome

199767f8919635c4928607450d9e0abb932109ceToomas Soome /* get internal structure and check integrity */

199767f8919635c4928607450d9e0abb932109ceToomas Soome if (file == NULL)

199767f8919635c4928607450d9e0abb932109ceToomas Soome return -1;

199767f8919635c4928607450d9e0abb932109ceToomas Soome state = (gz_statep)file;

199767f8919635c4928607450d9e0abb932109ceToomas Soome if (state->mode != GZ_READ && state->mode != GZ_WRITE)

199767f8919635c4928607450d9e0abb932109ceToomas Soome return -1;

199767f8919635c4928607450d9e0abb932109ceToomas Soome

199767f8919635c4928607450d9e0abb932109ceToomas Soome /* make sure we haven't already allocated memory */

199767f8919635c4928607450d9e0abb932109ceToomas Soome if (state->size != 0)

199767f8919635c4928607450d9e0abb932109ceToomas Soome return -1;

199767f8919635c4928607450d9e0abb932109ceToomas Soome

199767f8919635c4928607450d9e0abb932109ceToomas Soome /* check and set requested size */

199767f8919635c4928607450d9e0abb932109ceToomas Soome if (size < 2)

199767f8919635c4928607450d9e0abb932109ceToomas Soome size = 2; /* need two bytes to check magic header */

199767f8919635c4928607450d9e0abb932109ceToomas Soome state->want = size;

199767f8919635c4928607450d9e0abb932109ceToomas Soome return 0;

199767f8919635c4928607450d9e0abb932109ceToomas Soome}

199767f8919635c4928607450d9e0abb932109ceToomas Soome

199767f8919635c4928607450d9e0abb932109ceToomas Soomeint ZEXPORT gzrewind(file)

199767f8919635c4928607450d9e0abb932109ceToomas Soome gzFile file;

199767f8919635c4928607450d9e0abb932109ceToomas Soome{

199767f8919635c4928607450d9e0abb932109ceToomas Soome gz_statep state;

199767f8919635c4928607450d9e0abb932109ceToomas Soome

199767f8919635c4928607450d9e0abb932109ceToomas Soome /* get internal structure */

199767f8919635c4928607450d9e0abb932109ceToomas Soome if (file == NULL)

199767f8919635c4928607450d9e0abb932109ceToomas Soome return -1;

199767f8919635c4928607450d9e0abb932109ceToomas Soome state = (gz_statep)file;

199767f8919635c4928607450d9e0abb932109ceToomas Soome

199767f8919635c4928607450d9e0abb932109ceToomas Soome /* check that we're reading and that there's no error */

199767f8919635c4928607450d9e0abb932109ceToomas Soome if (state->mode != GZ_READ ||

199767f8919635c4928607450d9e0abb932109ceToomas Soome (state->err != Z_OK && state->err != Z_BUF_ERROR))

199767f8919635c4928607450d9e0abb932109ceToomas Soome return -1;

199767f8919635c4928607450d9e0abb932109ceToomas Soome

199767f8919635c4928607450d9e0abb932109ceToomas Soome /* back up and start over */

199767f8919635c4928607450d9e0abb932109ceToomas Soome if (LSEEK(state->fd, state->start, SEEK_SET) == -1)

199767f8919635c4928607450d9e0abb932109ceToomas Soome return -1;

199767f8919635c4928607450d9e0abb932109ceToomas Soome gz_reset(state);

199767f8919635c4928607450d9e0abb932109ceToomas Soome return 0;

199767f8919635c4928607450d9e0abb932109ceToomas Soome}

199767f8919635c4928607450d9e0abb932109ceToomas Soome

199767f8919635c4928607450d9e0abb932109ceToomas Soomez_off64_t ZEXPORT gzseek64(file, offset, whence)

199767f8919635c4928607450d9e0abb932109ceToomas Soome gzFile file;

199767f8919635c4928607450d9e0abb932109ceToomas Soome z_off64_t offset;

199767f8919635c4928607450d9e0abb932109ceToomas Soome int whence;

199767f8919635c4928607450d9e0abb932109ceToomas Soome{

199767f8919635c4928607450d9e0abb932109ceToomas Soome unsigned n;

199767f8919635c4928607450d9e0abb932109ceToomas Soome z_off64_t ret;

199767f8919635c4928607450d9e0abb932109ceToomas Soome gz_statep state;

199767f8919635c4928607450d9e0abb932109ceToomas Soome

199767f8919635c4928607450d9e0abb932109ceToomas Soome /* get internal structure and check integrity */

199767f8919635c4928607450d9e0abb932109ceToomas Soome if (file == NULL)

199767f8919635c4928607450d9e0abb932109ceToomas Soome return -1;

199767f8919635c4928607450d9e0abb932109ceToomas Soome state = (gz_statep)file;

199767f8919635c4928607450d9e0abb932109ceToomas Soome if (state->mode != GZ_READ && state->mode != GZ_WRITE)

199767f8919635c4928607450d9e0abb932109ceToomas Soome return -1;

199767f8919635c4928607450d9e0abb932109ceToomas Soome

199767f8919635c4928607450d9e0abb932109ceToomas Soome /* check that there's no error */

199767f8919635c4928607450d9e0abb932109ceToomas Soome if (state->err != Z_OK && state->err != Z_BUF_ERROR)

199767f8919635c4928607450d9e0abb932109ceToomas Soome return -1;

199767f8919635c4928607450d9e0abb932109ceToomas Soome

199767f8919635c4928607450d9e0abb932109ceToomas Soome /* can only seek from start or relative to current position */

199767f8919635c4928607450d9e0abb932109ceToomas Soome if (whence != SEEK_SET && whence != SEEK_CUR)

199767f8919635c4928607450d9e0abb932109ceToomas Soome return -1;

199767f8919635c4928607450d9e0abb932109ceToomas Soome

199767f8919635c4928607450d9e0abb932109ceToomas Soome /* normalize offset to a SEEK_CUR specification */

199767f8919635c4928607450d9e0abb932109ceToomas Soome if (whence == SEEK_SET)

199767f8919635c4928607450d9e0abb932109ceToomas Soome offset -= state->x.pos;

199767f8919635c4928607450d9e0abb932109ceToomas Soome else if (state->seek)

199767f8919635c4928607450d9e0abb932109ceToomas Soome offset += state->skip;

199767f8919635c4928607450d9e0abb932109ceToomas Soome state->seek = 0;

199767f8919635c4928607450d9e0abb932109ceToomas Soome

199767f8919635c4928607450d9e0abb932109ceToomas Soome /* if within raw area while reading, just go there */

199767f8919635c4928607450d9e0abb932109ceToomas Soome if (state->mode == GZ_READ && state->how == COPY &&

199767f8919635c4928607450d9e0abb932109ceToomas Soome state->x.pos + offset >= 0) {

199767f8919635c4928607450d9e0abb932109ceToomas Soome ret = LSEEK(state->fd, offset - state->x.have, SEEK_CUR);

199767f8919635c4928607450d9e0abb932109ceToomas Soome if (ret == -1)

199767f8919635c4928607450d9e0abb932109ceToomas Soome return -1;

199767f8919635c4928607450d9e0abb932109ceToomas Soome state->x.have = 0;

199767f8919635c4928607450d9e0abb932109ceToomas Soome state->eof = 0;

199767f8919635c4928607450d9e0abb932109ceToomas Soome state->past = 0;

199767f8919635c4928607450d9e0abb932109ceToomas Soome state->seek = 0;

199767f8919635c4928607450d9e0abb932109ceToomas Soome gz_error(state, Z_OK, NULL);

199767f8919635c4928607450d9e0abb932109ceToomas Soome state->strm.avail_in = 0;

199767f8919635c4928607450d9e0abb932109ceToomas Soome state->x.pos += offset;

199767f8919635c4928607450d9e0abb932109ceToomas Soome return state->x.pos;

199767f8919635c4928607450d9e0abb932109ceToomas Soome }

199767f8919635c4928607450d9e0abb932109ceToomas Soome

199767f8919635c4928607450d9e0abb932109ceToomas Soome /* calculate skip amount, rewinding if needed for back seek when reading */

199767f8919635c4928607450d9e0abb932109ceToomas Soome if (offset < 0) {

199767f8919635c4928607450d9e0abb932109ceToomas Soome if (state->mode != GZ_READ) /* writing -- can't go backwards */

199767f8919635c4928607450d9e0abb932109ceToomas Soome return -1;

199767f8919635c4928607450d9e0abb932109ceToomas Soome offset += state->x.pos;

199767f8919635c4928607450d9e0abb932109ceToomas Soome if (offset < 0) /* before start of file! */

199767f8919635c4928607450d9e0abb932109ceToomas Soome return -1;

199767f8919635c4928607450d9e0abb932109ceToomas Soome if (gzrewind(file) == -1) /* rewind, then skip to offset */

199767f8919635c4928607450d9e0abb932109ceToomas Soome return -1;

199767f8919635c4928607450d9e0abb932109ceToomas Soome }

199767f8919635c4928607450d9e0abb932109ceToomas Soome

199767f8919635c4928607450d9e0abb932109ceToomas Soome /* if reading, skip what's in output buffer (one less gzgetc() check) */

199767f8919635c4928607450d9e0abb932109ceToomas Soome if (state->mode == GZ_READ) {

199767f8919635c4928607450d9e0abb932109ceToomas Soome n = GT_OFF(state->x.have) || (z_off64_t)state->x.have > offset ?

199767f8919635c4928607450d9e0abb932109ceToomas Soome (unsigned)offset : state->x.have;

199767f8919635c4928607450d9e0abb932109ceToomas Soome state->x.have -= n;

199767f8919635c4928607450d9e0abb932109ceToomas Soome state->x.next += n;

199767f8919635c4928607450d9e0abb932109ceToomas Soome state->x.pos += n;

199767f8919635c4928607450d9e0abb932109ceToomas Soome offset -= n;

199767f8919635c4928607450d9e0abb932109ceToomas Soome }

199767f8919635c4928607450d9e0abb932109ceToomas Soome

199767f8919635c4928607450d9e0abb932109ceToomas Soome /* request skip (if not zero) */

199767f8919635c4928607450d9e0abb932109ceToomas Soome if (offset) {

199767f8919635c4928607450d9e0abb932109ceToomas Soome state->seek = 1;

199767f8919635c4928607450d9e0abb932109ceToomas Soome state->skip = offset;

199767f8919635c4928607450d9e0abb932109ceToomas Soome }

199767f8919635c4928607450d9e0abb932109ceToomas Soome return state->x.pos + offset;

199767f8919635c4928607450d9e0abb932109ceToomas Soome}

199767f8919635c4928607450d9e0abb932109ceToomas Soome

199767f8919635c4928607450d9e0abb932109ceToomas Soomez_off_t ZEXPORT gzseek(file, offset, whence)

199767f8919635c4928607450d9e0abb932109ceToomas Soome gzFile file;

199767f8919635c4928607450d9e0abb932109ceToomas Soome z_off_t offset;

199767f8919635c4928607450d9e0abb932109ceToomas Soome int whence;

199767f8919635c4928607450d9e0abb932109ceToomas Soome{

199767f8919635c4928607450d9e0abb932109ceToomas Soome z_off64_t ret;

199767f8919635c4928607450d9e0abb932109ceToomas Soome

199767f8919635c4928607450d9e0abb932109ceToomas Soome ret = gzseek64(file, (z_off64_t)offset, whence);

199767f8919635c4928607450d9e0abb932109ceToomas Soome return ret == (z_off_t)ret ? (z_off_t)ret : -1;

199767f8919635c4928607450d9e0abb932109ceToomas Soome}

199767f8919635c4928607450d9e0abb932109ceToomas Soome

199767f8919635c4928607450d9e0abb932109ceToomas Soomez_off64_t ZEXPORT gztell64(file)

199767f8919635c4928607450d9e0abb932109ceToomas Soome gzFile file;

199767f8919635c4928607450d9e0abb932109ceToomas Soome{

199767f8919635c4928607450d9e0abb932109ceToomas Soome gz_statep state;

199767f8919635c4928607450d9e0abb932109ceToomas Soome

199767f8919635c4928607450d9e0abb932109ceToomas Soome /* get internal structure and check integrity */

199767f8919635c4928607450d9e0abb932109ceToomas Soome if (file == NULL)

199767f8919635c4928607450d9e0abb932109ceToomas Soome return -1;

199767f8919635c4928607450d9e0abb932109ceToomas Soome state = (gz_statep)file;

199767f8919635c4928607450d9e0abb932109ceToomas Soome if (state->mode != GZ_READ && state->mode != GZ_WRITE)

199767f8919635c4928607450d9e0abb932109ceToomas Soome return -1;

199767f8919635c4928607450d9e0abb932109ceToomas Soome

199767f8919635c4928607450d9e0abb932109ceToomas Soome /* return position */

199767f8919635c4928607450d9e0abb932109ceToomas Soome return state->x.pos + (state->seek ? state->skip : 0);

199767f8919635c4928607450d9e0abb932109ceToomas Soome}

199767f8919635c4928607450d9e0abb932109ceToomas Soome

199767f8919635c4928607450d9e0abb932109ceToomas Soomez_off_t ZEXPORT gztell(file)

199767f8919635c4928607450d9e0abb932109ceToomas Soome gzFile file;

199767f8919635c4928607450d9e0abb932109ceToomas Soome{

199767f8919635c4928607450d9e0abb932109ceToomas Soome z_off64_t ret;

199767f8919635c4928607450d9e0abb932109ceToomas Soome

199767f8919635c4928607450d9e0abb932109ceToomas Soome ret = gztell64(file);

199767f8919635c4928607450d9e0abb932109ceToomas Soome return ret == (z_off_t)ret ? (z_off_t)ret : -1;

199767f8919635c4928607450d9e0abb932109ceToomas Soome}

199767f8919635c4928607450d9e0abb932109ceToomas Soome

199767f8919635c4928607450d9e0abb932109ceToomas Soomez_off64_t ZEXPORT gzoffset64(file)

199767f8919635c4928607450d9e0abb932109ceToomas Soome gzFile file;

199767f8919635c4928607450d9e0abb932109ceToomas Soome{

199767f8919635c4928607450d9e0abb932109ceToomas Soome z_off64_t offset;

199767f8919635c4928607450d9e0abb932109ceToomas Soome gz_statep state;

199767f8919635c4928607450d9e0abb932109ceToomas Soome

199767f8919635c4928607450d9e0abb932109ceToomas Soome /* get internal structure and check integrity */

199767f8919635c4928607450d9e0abb932109ceToomas Soome if (file == NULL)

199767f8919635c4928607450d9e0abb932109ceToomas Soome return -1;

199767f8919635c4928607450d9e0abb932109ceToomas Soome state = (gz_statep)file;

199767f8919635c4928607450d9e0abb932109ceToomas Soome if (state->mode != GZ_READ && state->mode != GZ_WRITE)

199767f8919635c4928607450d9e0abb932109ceToomas Soome return -1;

199767f8919635c4928607450d9e0abb932109ceToomas Soome

199767f8919635c4928607450d9e0abb932109ceToomas Soome /* compute and return effective offset in file */

199767f8919635c4928607450d9e0abb932109ceToomas Soome offset = LSEEK(state->fd, 0, SEEK_CUR);

199767f8919635c4928607450d9e0abb932109ceToomas Soome if (offset == -1)

199767f8919635c4928607450d9e0abb932109ceToomas Soome return -1;

199767f8919635c4928607450d9e0abb932109ceToomas Soome if (state->mode == GZ_READ) /* reading */

199767f8919635c4928607450d9e0abb932109ceToomas Soome offset -= state->strm.avail_in; /* don't count buffered input */

199767f8919635c4928607450d9e0abb932109ceToomas Soome return offset;

199767f8919635c4928607450d9e0abb932109ceToomas Soome}

199767f8919635c4928607450d9e0abb932109ceToomas Soome

199767f8919635c4928607450d9e0abb932109ceToomas Soomez_off_t ZEXPORT gzoffset(file)

199767f8919635c4928607450d9e0abb932109ceToomas Soome gzFile file;

199767f8919635c4928607450d9e0abb932109ceToomas Soome{

199767f8919635c4928607450d9e0abb932109ceToomas Soome z_off64_t ret;

199767f8919635c4928607450d9e0abb932109ceToomas Soome

199767f8919635c4928607450d9e0abb932109ceToomas Soome ret = gzoffset64(file);

199767f8919635c4928607450d9e0abb932109ceToomas Soome return ret == (z_off_t)ret ? (z_off_t)ret : -1;

199767f8919635c4928607450d9e0abb932109ceToomas Soome}

199767f8919635c4928607450d9e0abb932109ceToomas Soome

199767f8919635c4928607450d9e0abb932109ceToomas Soomeint ZEXPORT gzeof(file)

199767f8919635c4928607450d9e0abb932109ceToomas Soome gzFile file;

199767f8919635c4928607450d9e0abb932109ceToomas Soome{

199767f8919635c4928607450d9e0abb932109ceToomas Soome gz_statep state;

199767f8919635c4928607450d9e0abb932109ceToomas Soome

199767f8919635c4928607450d9e0abb932109ceToomas Soome /* get internal structure and check integrity */

199767f8919635c4928607450d9e0abb932109ceToomas Soome if (file == NULL)

199767f8919635c4928607450d9e0abb932109ceToomas Soome return 0;

199767f8919635c4928607450d9e0abb932109ceToomas Soome state = (gz_statep)file;

199767f8919635c4928607450d9e0abb932109ceToomas Soome if (state->mode != GZ_READ && state->mode != GZ_WRITE)

199767f8919635c4928607450d9e0abb932109ceToomas Soome return 0;

199767f8919635c4928607450d9e0abb932109ceToomas Soome

199767f8919635c4928607450d9e0abb932109ceToomas Soome /* return end-of-file state */

199767f8919635c4928607450d9e0abb932109ceToomas Soome return state->mode == GZ_READ ? state->past : 0;

199767f8919635c4928607450d9e0abb932109ceToomas Soome}

199767f8919635c4928607450d9e0abb932109ceToomas Soome

199767f8919635c4928607450d9e0abb932109ceToomas Soomeconst char * ZEXPORT gzerror(file, errnum)

199767f8919635c4928607450d9e0abb932109ceToomas Soome gzFile file;

199767f8919635c4928607450d9e0abb932109ceToomas Soome int *errnum;

199767f8919635c4928607450d9e0abb932109ceToomas Soome{

199767f8919635c4928607450d9e0abb932109ceToomas Soome gz_statep state;

199767f8919635c4928607450d9e0abb932109ceToomas Soome

199767f8919635c4928607450d9e0abb932109ceToomas Soome /* get internal structure and check integrity */

199767f8919635c4928607450d9e0abb932109ceToomas Soome if (file == NULL)

199767f8919635c4928607450d9e0abb932109ceToomas Soome return NULL;

199767f8919635c4928607450d9e0abb932109ceToomas Soome state = (gz_statep)file;

199767f8919635c4928607450d9e0abb932109ceToomas Soome if (state->mode != GZ_READ && state->mode != GZ_WRITE)

199767f8919635c4928607450d9e0abb932109ceToomas Soome return NULL;

199767f8919635c4928607450d9e0abb932109ceToomas Soome

199767f8919635c4928607450d9e0abb932109ceToomas Soome /* return error information */

199767f8919635c4928607450d9e0abb932109ceToomas Soome if (errnum != NULL)

199767f8919635c4928607450d9e0abb932109ceToomas Soome *errnum = state->err;

199767f8919635c4928607450d9e0abb932109ceToomas Soome return state->err == Z_MEM_ERROR ? "out of memory" :

199767f8919635c4928607450d9e0abb932109ceToomas Soome (state->msg == NULL ? "" : state->msg);

199767f8919635c4928607450d9e0abb932109ceToomas Soome}

199767f8919635c4928607450d9e0abb932109ceToomas Soome

199767f8919635c4928607450d9e0abb932109ceToomas Soomevoid ZEXPORT gzclearerr(file)

199767f8919635c4928607450d9e0abb932109ceToomas Soome gzFile file;

199767f8919635c4928607450d9e0abb932109ceToomas Soome{

199767f8919635c4928607450d9e0abb932109ceToomas Soome gz_statep state;

199767f8919635c4928607450d9e0abb932109ceToomas Soome

199767f8919635c4928607450d9e0abb932109ceToomas Soome /* get internal structure and check integrity */

199767f8919635c4928607450d9e0abb932109ceToomas Soome if (file == NULL)

199767f8919635c4928607450d9e0abb932109ceToomas Soome return;

199767f8919635c4928607450d9e0abb932109ceToomas Soome state = (gz_statep)file;

199767f8919635c4928607450d9e0abb932109ceToomas Soome if (state->mode != GZ_READ && state->mode != GZ_WRITE)

199767f8919635c4928607450d9e0abb932109ceToomas Soome return;

199767f8919635c4928607450d9e0abb932109ceToomas Soome

199767f8919635c4928607450d9e0abb932109ceToomas Soome /* clear error and end-of-file */

199767f8919635c4928607450d9e0abb932109ceToomas Soome if (state->mode == GZ_READ) {

199767f8919635c4928607450d9e0abb932109ceToomas Soome state->eof = 0;

199767f8919635c4928607450d9e0abb932109ceToomas Soome state->past = 0;

199767f8919635c4928607450d9e0abb932109ceToomas Soome }

199767f8919635c4928607450d9e0abb932109ceToomas Soome gz_error(state, Z_OK, NULL);

199767f8919635c4928607450d9e0abb932109ceToomas Soome}

199767f8919635c4928607450d9e0abb932109ceToomas Soome

199767f8919635c4928607450d9e0abb932109ceToomas Soomevoid ZLIB_INTERNAL gz_error(state, err, msg)

199767f8919635c4928607450d9e0abb932109ceToomas Soome gz_statep state;

199767f8919635c4928607450d9e0abb932109ceToomas Soome int err;

199767f8919635c4928607450d9e0abb932109ceToomas Soome const char *msg;

199767f8919635c4928607450d9e0abb932109ceToomas Soome{

199767f8919635c4928607450d9e0abb932109ceToomas Soome /* free previously allocated message and clear */

199767f8919635c4928607450d9e0abb932109ceToomas Soome if (state->msg != NULL) {

199767f8919635c4928607450d9e0abb932109ceToomas Soome if (state->err != Z_MEM_ERROR)

199767f8919635c4928607450d9e0abb932109ceToomas Soome free(state->msg);

199767f8919635c4928607450d9e0abb932109ceToomas Soome state->msg = NULL;

199767f8919635c4928607450d9e0abb932109ceToomas Soome }

199767f8919635c4928607450d9e0abb932109ceToomas Soome

199767f8919635c4928607450d9e0abb932109ceToomas Soome /* if fatal, set state->x.have to 0 so that the gzgetc() macro fails */

199767f8919635c4928607450d9e0abb932109ceToomas Soome if (err != Z_OK && err != Z_BUF_ERROR)

199767f8919635c4928607450d9e0abb932109ceToomas Soome state->x.have = 0;

199767f8919635c4928607450d9e0abb932109ceToomas Soome

199767f8919635c4928607450d9e0abb932109ceToomas Soome /* set error code, and if no message, then done */

199767f8919635c4928607450d9e0abb932109ceToomas Soome state->err = err;

199767f8919635c4928607450d9e0abb932109ceToomas Soome if (msg == NULL)

199767f8919635c4928607450d9e0abb932109ceToomas Soome return;

199767f8919635c4928607450d9e0abb932109ceToomas Soome

199767f8919635c4928607450d9e0abb932109ceToomas Soome /* for an out of memory error, return literal string when requested */

199767f8919635c4928607450d9e0abb932109ceToomas Soome if (err == Z_MEM_ERROR)

199767f8919635c4928607450d9e0abb932109ceToomas Soome return;

199767f8919635c4928607450d9e0abb932109ceToomas Soome

199767f8919635c4928607450d9e0abb932109ceToomas Soome /* construct error message with path */

199767f8919635c4928607450d9e0abb932109ceToomas Soome if ((state->msg = (char *)malloc(strlen(state->path) + strlen(msg) + 3)) ==

199767f8919635c4928607450d9e0abb932109ceToomas Soome NULL) {

199767f8919635c4928607450d9e0abb932109ceToomas Soome state->err = Z_MEM_ERROR;

199767f8919635c4928607450d9e0abb932109ceToomas Soome return;

199767f8919635c4928607450d9e0abb932109ceToomas Soome }

199767f8919635c4928607450d9e0abb932109ceToomas Soome#if !defined(NO_snprintf) && !defined(NO_vsnprintf)

199767f8919635c4928607450d9e0abb932109ceToomas Soome snprintf(state->msg, strlen(state->path) + strlen(msg) + 3,

199767f8919635c4928607450d9e0abb932109ceToomas Soome "%s%s%s", state->path, ": ", msg);

199767f8919635c4928607450d9e0abb932109ceToomas Soome#else

199767f8919635c4928607450d9e0abb932109ceToomas Soome strcpy(state->msg, state->path);

199767f8919635c4928607450d9e0abb932109ceToomas Soome strcat(state->msg, ": ");

199767f8919635c4928607450d9e0abb932109ceToomas Soome strcat(state->msg, msg);

199767f8919635c4928607450d9e0abb932109ceToomas Soome#endif

199767f8919635c4928607450d9e0abb932109ceToomas Soome return;

199767f8919635c4928607450d9e0abb932109ceToomas Soome}

199767f8919635c4928607450d9e0abb932109ceToomas Soome

199767f8919635c4928607450d9e0abb932109ceToomas Soome#ifndef INT_MAX

199767f8919635c4928607450d9e0abb932109ceToomas Soomeunsigned ZLIB_INTERNAL gz_intmax()

199767f8919635c4928607450d9e0abb932109ceToomas Soome{

199767f8919635c4928607450d9e0abb932109ceToomas Soome unsigned p, q;

199767f8919635c4928607450d9e0abb932109ceToomas Soome

199767f8919635c4928607450d9e0abb932109ceToomas Soome p = 1;

199767f8919635c4928607450d9e0abb932109ceToomas Soome do {

199767f8919635c4928607450d9e0abb932109ceToomas Soome q = p;

199767f8919635c4928607450d9e0abb932109ceToomas Soome p <<= 1;

199767f8919635c4928607450d9e0abb932109ceToomas Soome p++;

199767f8919635c4928607450d9e0abb932109ceToomas Soome } while (p > q);

199767f8919635c4928607450d9e0abb932109ceToomas Soome return q >> 1;

199767f8919635c4928607450d9e0abb932109ceToomas Soome}

199767f8919635c4928607450d9e0abb932109ceToomas Soome#endif