/* zlib.h -- interface of the 'zlib' general purpose compression library
- version 1.1.2, March 19th, 1998
+ version 1.1.3, July 9th, 1998
Copyright (C) 1995-1998 Jean-loup Gailly and Mark Adler
extern "C" {
#endif
-#define ZLIB_VERSION "1.1.2"
+#define ZLIB_VERSION "1.1.3"
/*
The 'zlib' compression library provides in-memory compression and
/* basic functions */
-extern const char * ZEXPORT zlibVersion OF((void));
+ZEXTERN const char * ZEXPORT zlibVersion OF((void));
/* The application can compare zlibVersion and ZLIB_VERSION for consistency.
If the first character differs, the library code actually used is
not compatible with the zlib.h header file used by the application.
*/
/*
-extern int ZEXPORT deflateInit OF((z_streamp strm, int level));
+ZEXTERN int ZEXPORT deflateInit OF((z_streamp strm, int level));
Initializes the internal stream state for compression. The fields
zalloc, zfree and opaque must be initialized before by the caller.
*/
-extern int ZEXPORT deflate OF((z_streamp strm, int flush));
+ZEXTERN int ZEXPORT deflate OF((z_streamp strm, int flush));
/*
deflate compresses as much data as possible, and stops when the input
buffer becomes empty or the output buffer becomes full. It may introduce some
processed or more output produced), Z_STREAM_END if all input has been
consumed and all output has been produced (only when flush is set to
Z_FINISH), Z_STREAM_ERROR if the stream state was inconsistent (for example
- if next_in or next_out was NULL), Z_BUF_ERROR if no progress is possible.
+ if next_in or next_out was NULL), Z_BUF_ERROR if no progress is possible
+ (for example avail_in or avail_out was zero).
*/
-extern int ZEXPORT deflateEnd OF((z_streamp strm));
+ZEXTERN int ZEXPORT deflateEnd OF((z_streamp strm));
/*
All dynamically allocated data structures for this stream are freed.
This function discards any unprocessed input and does not flush any
/*
-extern int ZEXPORT inflateInit OF((z_streamp strm));
+ZEXTERN int ZEXPORT inflateInit OF((z_streamp strm));
Initializes the internal stream state for decompression. The fields
next_in, avail_in, zalloc, zfree and opaque must be initialized before by
*/
-extern int ZEXPORT inflate OF((z_streamp strm, int flush));
+ZEXTERN int ZEXPORT inflate OF((z_streamp strm, int flush));
/*
inflate decompresses as much data as possible, and stops when the input
buffer becomes empty or the output buffer becomes full. It may some
*/
-extern int ZEXPORT inflateEnd OF((z_streamp strm));
+ZEXTERN int ZEXPORT inflateEnd OF((z_streamp strm));
/*
All dynamically allocated data structures for this stream are freed.
This function discards any unprocessed input and does not flush any
*/
/*
-extern int ZEXPORT deflateInit2 OF((z_streamp strm,
- int level,
- int method,
- int windowBits,
- int memLevel,
- int strategy));
+ZEXTERN int ZEXPORT deflateInit2 OF((z_streamp strm,
+ int level,
+ int method,
+ int windowBits,
+ int memLevel,
+ int strategy));
This is another version of deflateInit with more compression options. The
fields next_in, zalloc, zfree and opaque must be initialized before by
not perform any compression: this will be done by deflate().
*/
-extern int ZEXPORT deflateSetDictionary OF((z_streamp strm,
- const Bytef *dictionary,
- uInt dictLength));
+ZEXTERN int ZEXPORT deflateSetDictionary OF((z_streamp strm,
+ const Bytef *dictionary,
+ uInt dictLength));
/*
Initializes the compression dictionary from the given byte sequence
without producing any compressed output. This function must be called
- immediately after deflateInit or deflateInit2, before any call of
- deflate. The compressor and decompressor must use exactly the same
+ immediately after deflateInit, deflateInit2 or deflateReset, before any
+ call of deflate. The compressor and decompressor must use exactly the same
dictionary (see inflateSetDictionary).
The dictionary should consist of strings (byte sequences) that are likely
perform any compression: this will be done by deflate().
*/
-extern int ZEXPORT deflateCopy OF((z_streamp dest,
- z_streamp source));
+ZEXTERN int ZEXPORT deflateCopy OF((z_streamp dest,
+ z_streamp source));
/*
Sets the destination stream as a complete copy of the source stream.
destination.
*/
-extern int ZEXPORT deflateReset OF((z_streamp strm));
+ZEXTERN int ZEXPORT deflateReset OF((z_streamp strm));
/*
This function is equivalent to deflateEnd followed by deflateInit,
but does not free and reallocate all the internal compression state.
stream state was inconsistent (such as zalloc or state being NULL).
*/
-extern int ZEXPORT deflateParams OF((z_streamp strm, int level, int strategy));
+ZEXTERN int ZEXPORT deflateParams OF((z_streamp strm,
+ int level,
+ int strategy));
/*
Dynamically update the compression level and compression strategy. The
interpretation of level and strategy is as in deflateInit2. This can be
*/
/*
-extern int ZEXPORT inflateInit2 OF((z_streamp strm,
- int windowBits));
+ZEXTERN int ZEXPORT inflateInit2 OF((z_streamp strm,
+ int windowBits));
This is another version of inflateInit with an extra parameter. The
fields next_in, avail_in, zalloc, zfree and opaque must be initialized
modified, but next_out and avail_out are unchanged.)
*/
-extern int ZEXPORT inflateSetDictionary OF((z_streamp strm,
- const Bytef *dictionary,
- uInt dictLength));
+ZEXTERN int ZEXPORT inflateSetDictionary OF((z_streamp strm,
+ const Bytef *dictionary,
+ uInt dictLength));
/*
Initializes the decompression dictionary from the given uncompressed byte
sequence. This function must be called immediately after a call of inflate
inflate().
*/
-extern int ZEXPORT inflateSync OF((z_streamp strm));
+ZEXTERN int ZEXPORT inflateSync OF((z_streamp strm));
/*
Skips invalid compressed data until a full flush point (see above the
description of deflate with Z_FULL_FLUSH) can be found, or until all
until success or end of the input data.
*/
-extern int ZEXPORT inflateReset OF((z_streamp strm));
+ZEXTERN int ZEXPORT inflateReset OF((z_streamp strm));
/*
This function is equivalent to inflateEnd followed by inflateInit,
but does not free and reallocate all the internal decompression state.
utility functions can easily be modified if you need special options.
*/
-extern int ZEXPORT compress OF((Bytef *dest, uLongf *destLen,
- const Bytef *source, uLong sourceLen));
+ZEXTERN int ZEXPORT compress OF((Bytef *dest, uLongf *destLen,
+ const Bytef *source, uLong sourceLen));
/*
Compresses the source buffer into the destination buffer. sourceLen is
the byte length of the source buffer. Upon entry, destLen is the total
buffer.
*/
-extern int ZEXPORT compress2 OF((Bytef *dest, uLongf *destLen,
- const Bytef *source, uLong sourceLen,
- int level));
+ZEXTERN int ZEXPORT compress2 OF((Bytef *dest, uLongf *destLen,
+ const Bytef *source, uLong sourceLen,
+ int level));
/*
Compresses the source buffer into the destination buffer. The level
parameter has the same meaning as in deflateInit. sourceLen is the byte
Z_STREAM_ERROR if the level parameter is invalid.
*/
-extern int ZEXPORT uncompress OF((Bytef *dest, uLongf *destLen,
- const Bytef *source, uLong sourceLen));
+ZEXTERN int ZEXPORT uncompress OF((Bytef *dest, uLongf *destLen,
+ const Bytef *source, uLong sourceLen));
/*
Decompresses the source buffer into the destination buffer. sourceLen is
the byte length of the source buffer. Upon entry, destLen is the total
typedef voidp gzFile;
-extern gzFile ZEXPORT gzopen OF((const char *path, const char *mode));
+ZEXTERN gzFile ZEXPORT gzopen OF((const char *path, const char *mode));
/*
Opens a gzip (.gz) file for reading or writing. The mode parameter
is as in fopen ("rb" or "wb") but can also include a compression level
can be checked to distinguish the two cases (if errno is zero, the
zlib error is Z_MEM_ERROR). */
-extern gzFile ZEXPORT gzdopen OF((int fd, const char *mode));
+ZEXTERN gzFile ZEXPORT gzdopen OF((int fd, const char *mode));
/*
gzdopen() associates a gzFile with the file descriptor fd. File
descriptors are obtained from calls like open, dup, creat, pipe or
the (de)compression state.
*/
-extern int ZEXPORT gzsetparams OF((gzFile file, int level, int strategy));
+ZEXTERN int ZEXPORT gzsetparams OF((gzFile file, int level, int strategy));
/*
Dynamically update the compression level or strategy. See the description
of deflateInit2 for the meaning of these parameters.
opened for writing.
*/
-extern int ZEXPORT gzread OF((gzFile file, voidp buf, unsigned len));
+ZEXTERN int ZEXPORT gzread OF((gzFile file, voidp buf, unsigned len));
/*
Reads the given number of uncompressed bytes from the compressed file.
If the input file was not in gzip format, gzread copies the given number
gzread returns the number of uncompressed bytes actually read (0 for
end of file, -1 for error). */
-extern int ZEXPORT gzwrite OF((gzFile file, const voidp buf, unsigned len));
+ZEXTERN int ZEXPORT gzwrite OF((gzFile file,
+ const voidp buf, unsigned len));
/*
Writes the given number of uncompressed bytes into the compressed file.
gzwrite returns the number of uncompressed bytes actually written
(0 in case of error).
*/
-extern int ZEXPORTVA gzprintf OF((gzFile file, const char *format, ...));
+ZEXTERN int ZEXPORTVA gzprintf OF((gzFile file, const char *format, ...));
/*
Converts, formats, and writes the args to the compressed file under
control of the format string, as in fprintf. gzprintf returns the number of
uncompressed bytes actually written (0 in case of error).
*/
-extern int ZEXPORT gzputs OF((gzFile file, const char *s));
+ZEXTERN int ZEXPORT gzputs OF((gzFile file, const char *s));
/*
Writes the given null-terminated string to the compressed file, excluding
the terminating null character.
gzputs returns the number of characters written, or -1 in case of error.
*/
-extern char * ZEXPORT gzgets OF((gzFile file, char *buf, int len));
+ZEXTERN char * ZEXPORT gzgets OF((gzFile file, char *buf, int len));
/*
Reads bytes from the compressed file until len-1 characters are read, or
a newline character is read and transferred to buf, or an end-of-file
gzgets returns buf, or Z_NULL in case of error.
*/
-extern int ZEXPORT gzputc OF((gzFile file, int c));
+ZEXTERN int ZEXPORT gzputc OF((gzFile file, int c));
/*
Writes c, converted to an unsigned char, into the compressed file.
gzputc returns the value that was written, or -1 in case of error.
*/
-extern int ZEXPORT gzgetc OF((gzFile file));
+ZEXTERN int ZEXPORT gzgetc OF((gzFile file));
/*
Reads one byte from the compressed file. gzgetc returns this byte
or -1 in case of end of file or error.
*/
-extern int ZEXPORT gzflush OF((gzFile file, int flush));
+ZEXTERN int ZEXPORT gzflush OF((gzFile file, int flush));
/*
Flushes all pending output into the compressed file. The parameter
flush is as in the deflate() function. The return value is the zlib
degrade compression.
*/
-extern z_off_t ZEXPORT gzseek OF((gzFile file, z_off_t offset, int whence));
+ZEXTERN z_off_t ZEXPORT gzseek OF((gzFile file,
+ z_off_t offset, int whence));
/*
- Sets the starting position for the next gzread or gzwrite on the given
- compressed file. The offset represents a number of bytes in the
+ Sets the starting position for the next gzread or gzwrite on the
+ given compressed file. The offset represents a number of bytes in the
uncompressed data stream. The whence parameter is defined as in lseek(2);
the value SEEK_END is not supported.
If the file is opened for reading, this function is emulated but can be
would be before the current position.
*/
-extern int ZEXPORT gzrewind OF((gzFile file));
+ZEXTERN int ZEXPORT gzrewind OF((gzFile file));
/*
Rewinds the given file. This function is supported only for reading.
gzrewind(file) is equivalent to (int)gzseek(file, 0L, SEEK_SET)
*/
-extern z_off_t ZEXPORT gztell OF((gzFile file));
+ZEXTERN z_off_t ZEXPORT gztell OF((gzFile file));
/*
Returns the starting position for the next gzread or gzwrite on the
given compressed file. This position represents a number of bytes in the
gztell(file) is equivalent to gzseek(file, 0L, SEEK_CUR)
*/
-extern int ZEXPORT gzeof OF((gzFile file));
+ZEXTERN int ZEXPORT gzeof OF((gzFile file));
/*
Returns 1 when EOF has previously been detected reading the given
input stream, otherwise zero.
*/
-extern int ZEXPORT gzclose OF((gzFile file));
+ZEXTERN int ZEXPORT gzclose OF((gzFile file));
/*
Flushes all pending output if necessary, closes the compressed file
and deallocates all the (de)compression state. The return value is the zlib
error number (see function gzerror below).
*/
-extern const char * ZEXPORT gzerror OF((gzFile file, int *errnum));
+ZEXTERN const char * ZEXPORT gzerror OF((gzFile file, int *errnum));
/*
Returns the error message for the last error which occurred on the
given compressed file. errnum is set to zlib error number. If an
compression library.
*/
-extern uLong ZEXPORT adler32 OF((uLong adler, const Bytef *buf, uInt len));
+ZEXTERN uLong ZEXPORT adler32 OF((uLong adler, const Bytef *buf, uInt len));
/*
Update a running Adler-32 checksum with the bytes buf[0..len-1] and
if (adler != original_adler) error();
*/
-extern uLong ZEXPORT crc32 OF((uLong crc, const Bytef *buf, uInt len));
+ZEXTERN uLong ZEXPORT crc32 OF((uLong crc, const Bytef *buf, uInt len));
/*
Update a running crc with the bytes buf[0..len-1] and return the updated
crc. If buf is NULL, this function returns the required initial value
/* deflateInit and inflateInit are macros to allow checking the zlib version
* and the compiler's view of z_stream:
*/
-extern int ZEXPORT deflateInit_ OF((z_streamp strm, int level,
- const char *version, int stream_size));
-extern int ZEXPORT inflateInit_ OF((z_streamp strm,
- const char *version, int stream_size));
-extern int ZEXPORT deflateInit2_ OF((z_streamp strm, int level, int method,
- int windowBits, int memLevel,
- int strategy, const char *version,
- int stream_size));
-extern int ZEXPORT inflateInit2_ OF((z_streamp strm, int windowBits,
+ZEXTERN int ZEXPORT deflateInit_ OF((z_streamp strm, int level,
const char *version, int stream_size));
+ZEXTERN int ZEXPORT inflateInit_ OF((z_streamp strm,
+ const char *version, int stream_size));
+ZEXTERN int ZEXPORT deflateInit2_ OF((z_streamp strm, int level, int method,
+ int windowBits, int memLevel,
+ int strategy, const char *version,
+ int stream_size));
+ZEXTERN int ZEXPORT inflateInit2_ OF((z_streamp strm, int windowBits,
+ const char *version, int stream_size));
#define deflateInit(strm, level) \
deflateInit_((strm), (level), ZLIB_VERSION, sizeof(z_stream))
#define inflateInit(strm) \
struct internal_state {int dummy;}; /* hack for buggy compilers */
#endif
-extern const char * ZEXPORT zError OF((int err));
-extern int ZEXPORT inflateSyncPoint OF((z_streamp z));
-extern const uLongf * ZEXPORT get_crc_table OF((void));
+ZEXTERN const char * ZEXPORT zError OF((int err));
+ZEXTERN int ZEXPORT inflateSyncPoint OF((z_streamp z));
+ZEXTERN const uLongf * ZEXPORT get_crc_table OF((void));
#ifdef __cplusplus
}
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