Add 'neozip/' from commit 'c2712b8a345191f6ed79558c089777df94590087'

git-subtree-dir: neozip
git-subtree-mainline: b1e34e861b5d732afe828d58aad2c638135061fd
git-subtree-split: c2712b8a345191f6ed79558c089777df94590087

1 files changed, 1002 insertions, 0 deletions

diff --git a/neozip/test/example.c b/neozip/test/example.c
new file mode 100644
index 0000000000..fd62bd5d7f
--- /dev/null
+++ b/neozip/test/example.c
@@ -0,0 +1,1002 @@
+/* example.c -- usage example of the zlib compression library
+ * Copyright (C) 1995-2006, 2011, 2016 Jean-loup Gailly
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+
+#include "zbuild.h"
+#ifdef ZLIB_COMPAT
+#  include "zlib.h"
+#else
+#  include "zlib-ng.h"
+#endif
+#include "deflate.h"
+
+#include <stdio.h>
+#include <stdarg.h>
+#include <inttypes.h>
+
+#include "test_shared_ng.h"
+
+#define TESTFILE "foo.gz"
+
+static const char dictionary[] = "hello";
+static unsigned long dictId = 0; /* Adler32 value of the dictionary */
+
+/* Maximum dictionary size, according to inflateGetDictionary() description. */
+#define MAX_DICTIONARY_SIZE 32768
+
+static alloc_func zalloc = NULL;
+static free_func zfree = NULL;
+
+/* ===========================================================================
+ * Display error message and exit
+ */
+void error(const char *format, ...) {
+    va_list va;
+
+    va_start(va, format);
+    vfprintf(stderr, format, va);
+    va_end(va);
+
+    exit(1);
+}
+
+#define CHECK_ERR(err, msg) { \
+    if (err != Z_OK) \
+        error("%s error: %d\n", msg, err); \
+}
+
+/* ===========================================================================
+ * Test compress() and uncompress()
+ */
+static void test_compress(unsigned char *compr, z_uintmax_t comprLen, unsigned char *uncompr, z_uintmax_t uncomprLen) {
+    int err;
+    unsigned int len = (unsigned int)strlen(hello)+1;
+
+    err = PREFIX(compress)(compr, &comprLen, (const unsigned char*)hello, len);
+    CHECK_ERR(err, "compress");
+
+    strcpy((char*)uncompr, "garbage");
+
+    err = PREFIX(uncompress)(uncompr, &uncomprLen, compr, comprLen);
+    CHECK_ERR(err, "uncompress");
+
+    if (strcmp((char*)uncompr, hello))
+        error("bad uncompress\n");
+    else
+        printf("uncompress(): %s\n", (char *)uncompr);
+}
+
+/* ===========================================================================
+ * Test read/write of .gz files
+ */
+static void test_gzio(const char *fname, unsigned char *uncompr, z_size_t uncomprLen) {
+#ifdef NO_GZCOMPRESS
+    fprintf(stderr, "NO_GZCOMPRESS -- gz* functions cannot compress\n");
+#else
+    z_int32_t err;
+    size_t read;
+    size_t len = strlen(hello)+1;
+    gzFile file;
+    z_off64_t pos;
+    z_off64_t comprLen;
+
+    /* Write gz file with test data */
+    file = PREFIX(gzopen)(fname, "wb");
+    if (file == NULL)
+        error("gzopen error\n");
+    /* Write hello, hello! using gzputs and gzprintf */
+    PREFIX(gzputc)(file, 'h');
+    if (PREFIX(gzputs)(file, "ello") != 4)
+        error("gzputs err: %s\n", PREFIX(gzerror)(file, &err));
+    if (PREFIX(gzprintf)(file, ", %s!", "hello") != 8)
+        error("gzprintf err: %s\n", PREFIX(gzerror)(file, &err));
+    /* Write string null-teriminator using gzseek */
+    if (PREFIX(gzseek)(file, 1L, SEEK_CUR) < 0)
+        error("gzseek error, gztell=%ld\n", (long)PREFIX(gztell)(file));
+    /* Write hello, hello! using gzfwrite using best compression level */
+    if (PREFIX(gzsetparams)(file, Z_BEST_COMPRESSION, Z_DEFAULT_STRATEGY) != Z_OK)
+        error("gzsetparams err: %s\n", PREFIX(gzerror)(file, &err));
+    if (PREFIX(gzfwrite)(hello, len, 1, file) == 0)
+        error("gzfwrite err: %s\n", PREFIX(gzerror)(file, &err));
+    /* Flush compressed bytes to file */
+    if (PREFIX(gzflush)(file, Z_SYNC_FLUSH) != Z_OK)
+        error("gzflush err: %s\n", PREFIX(gzerror)(file, &err));
+    comprLen = PREFIX(gzoffset)(file);
+    if (comprLen <= 0)
+        error("gzoffset err: %s\n", PREFIX(gzerror)(file, &err));
+    PREFIX(gzclose)(file);
+
+    /* Open gz file we previously wrote */
+    file = PREFIX(gzopen)(fname, "rb");
+    if (file == NULL)
+        error("gzopen error\n");
+
+    /* Read uncompressed data - hello, hello! string twice */
+    strcpy((char*)uncompr, "garbages");
+    if (PREFIX(gzread)(file, uncompr, (unsigned)uncomprLen) != (int)(len + len))
+        error("gzread err: %s\n", PREFIX(gzerror)(file, &err));
+    if (strcmp((char*)uncompr, hello))
+        error("bad gzread: %s\n", (char*)uncompr);
+    else
+        printf("gzread(): %s\n", (char*)uncompr);
+    /* Check position at the end of the gz file */
+    if (PREFIX(gzeof)(file) != 1)
+        error("gzeof err: not reporting end of stream\n");
+
+    /* Seek backwards mid-string and check char reading with gzgetc and gzungetc */
+    pos = PREFIX(gzseek)(file, -22L, SEEK_CUR);
+    if (pos != 6 || PREFIX(gztell)(file) != pos)
+        error("gzseek error, pos=%ld, gztell=%ld\n", (long)pos, (long)PREFIX(gztell)(file));
+    if (PREFIX(gzgetc)(file) != ' ')
+        error("gzgetc error\n");
+    if (PREFIX(gzungetc)(' ', file) != ' ')
+        error("gzungetc error\n");
+    /* Read first hello, hello! string with gzgets */
+    strcpy((char*)uncompr, "garbages");
+    PREFIX(gzgets)(file, (char*)uncompr, (int)uncomprLen);
+    if (strlen((char*)uncompr) != 7) /* " hello!" */
+        error("gzgets err after gzseek: %s\n", PREFIX(gzerror)(file, &err));
+    if (strcmp((char*)uncompr, hello + 6))
+        error("bad gzgets after gzseek\n");
+    else
+        printf("gzgets() after gzseek: %s\n", (char*)uncompr);
+    /* Seek to second hello, hello! string */
+    pos = PREFIX(gzseek)(file, 14L, SEEK_SET);
+    if (pos != 14 || PREFIX(gztell)(file) != pos)
+        error("gzseek error, pos=%ld, gztell=%ld\n", (long)pos, (long)PREFIX(gztell)(file));
+    /* Check position not at end of file */
+    if (PREFIX(gzeof)(file) != 0)
+        error("gzeof err: reporting end of stream\n");
+    /* Read first hello, hello! string with gzfread */
+    strcpy((char*)uncompr, "garbages");
+    read = PREFIX(gzfread)(uncompr, uncomprLen, 1, file);
+    if (strcmp((const char *)uncompr, hello) != 0)
+        error("bad gzgets\n");
+    else
+        printf("gzgets(): %s\n", (char*)uncompr);
+    pos = PREFIX(gzoffset)(file);
+    if (pos < 0 || pos != (comprLen + 10))
+        error("gzoffset err: wrong offset at end\n");
+    /* Trigger an error and clear it with gzclearerr */
+    PREFIX(gzfread)(uncompr, (size_t)-1, (size_t)-1, file);
+    PREFIX(gzerror)(file, &err);
+    if (err == 0)
+        error("gzerror err: no error returned\n");
+    PREFIX(gzclearerr)(file);
+    PREFIX(gzerror)(file, &err);
+    if (err != 0)
+        error("gzclearerr err: not zero %d\n", err);
+
+    PREFIX(gzclose)(file);
+
+    if (PREFIX(gzclose)(NULL) != Z_STREAM_ERROR)
+        error("gzclose unexpected return when handle null\n");
+    Z_UNUSED(read);
+#endif
+}
+
+/* ===========================================================================
+ * Test deflate() with small buffers
+ */
+static void test_deflate(unsigned char *compr, size_t comprLen) {
+    PREFIX3(stream) c_stream; /* compression stream */
+    int err;
+    size_t len = strlen(hello)+1;
+
+    c_stream.zalloc = zalloc;
+    c_stream.zfree = zfree;
+    c_stream.opaque = (void *)0;
+    c_stream.total_in = 0;
+    c_stream.total_out = 0;
+
+    err = PREFIX(deflateInit)(&c_stream, Z_DEFAULT_COMPRESSION);
+    CHECK_ERR(err, "deflateInit");
+
+    c_stream.next_in  = (z_const unsigned char *)hello;
+    c_stream.next_out = compr;
+
+    while (c_stream.total_in != len && c_stream.total_out < comprLen) {
+        c_stream.avail_in = c_stream.avail_out = 1; /* force small buffers */
+        err = PREFIX(deflate)(&c_stream, Z_NO_FLUSH);
+        CHECK_ERR(err, "deflate");
+    }
+    /* Finish the stream, still forcing small buffers: */
+    for (;;) {
+        c_stream.avail_out = 1;
+        err = PREFIX(deflate)(&c_stream, Z_FINISH);
+        if (err == Z_STREAM_END) break;
+        CHECK_ERR(err, "deflate");
+    }
+
+    err = PREFIX(deflateEnd)(&c_stream);
+    CHECK_ERR(err, "deflateEnd");
+}
+
+/* ===========================================================================
+ * Test inflate() with small buffers
+ */
+static void test_inflate(unsigned char *compr, size_t comprLen, unsigned char *uncompr, size_t uncomprLen) {
+    int err;
+    PREFIX3(stream) d_stream; /* decompression stream */
+
+    strcpy((char*)uncompr, "garbage");
+
+    d_stream.zalloc = zalloc;
+    d_stream.zfree = zfree;
+    d_stream.opaque = (void *)0;
+
+    d_stream.next_in  = compr;
+    d_stream.avail_in = 0;
+    d_stream.next_out = uncompr;
+    d_stream.total_in = 0;
+    d_stream.total_out = 0;
+
+    err = PREFIX(inflateInit)(&d_stream);
+    CHECK_ERR(err, "inflateInit");
+
+    while (d_stream.total_out < uncomprLen && d_stream.total_in < comprLen) {
+        d_stream.avail_in = d_stream.avail_out = 1; /* force small buffers */
+        err = PREFIX(inflate)(&d_stream, Z_NO_FLUSH);
+        if (err == Z_STREAM_END) break;
+        CHECK_ERR(err, "inflate");
+    }
+
+    err = PREFIX(inflateEnd)(&d_stream);
+    CHECK_ERR(err, "inflateEnd");
+
+    if (strcmp((char*)uncompr, hello))
+        error("bad inflate\n");
+    else
+        printf("inflate(): %s\n", (char *)uncompr);
+}
+
+static unsigned int diff;
+
+/* ===========================================================================
+ * Test deflate() with large buffers and dynamic change of compression level
+ */
+static void test_large_deflate(unsigned char *compr, size_t comprLen, unsigned char *uncompr, size_t uncomprLen, int zng_params) {
+    PREFIX3(stream) c_stream; /* compression stream */
+    int err;
+#ifndef ZLIB_COMPAT
+    int level = -1;
+    int strategy = -1;
+    zng_deflate_param_value params[2];
+
+    params[0].param = Z_DEFLATE_LEVEL;
+    params[0].buf = &level;
+    params[0].size = sizeof(level);
+
+    params[1].param = Z_DEFLATE_STRATEGY;
+    params[1].buf = &strategy;
+    params[1].size = sizeof(strategy);
+#endif
+
+    c_stream.zalloc = zalloc;
+    c_stream.zfree = zfree;
+    c_stream.opaque = (void *)0;
+
+    err = PREFIX(deflateInit)(&c_stream, Z_BEST_SPEED);
+    CHECK_ERR(err, "deflateInit");
+
+    c_stream.next_out = compr;
+    c_stream.avail_out = (unsigned int)comprLen;
+
+    /* At this point, uncompr is still mostly zeroes, so it should compress
+     * very well:
+     */
+    c_stream.next_in = uncompr;
+    c_stream.avail_in = (unsigned int)uncomprLen;
+    err = PREFIX(deflate)(&c_stream, Z_NO_FLUSH);
+    CHECK_ERR(err, "deflate");
+    if (c_stream.avail_in != 0)
+        error("deflate not greedy\n");
+
+    /* Feed in already compressed data and switch to no compression: */
+    if (zng_params) {
+#ifndef ZLIB_COMPAT
+        zng_deflateGetParams(&c_stream, params, sizeof(params) / sizeof(params[0]));
+        if (level != Z_BEST_SPEED)
+            error("Expected compression level Z_BEST_SPEED, got %d\n", level);
+        if (strategy != Z_DEFAULT_STRATEGY)
+            error("Expected compression strategy Z_DEFAULT_STRATEGY, got %d\n", strategy);
+        level = Z_NO_COMPRESSION;
+        strategy = Z_DEFAULT_STRATEGY;
+        zng_deflateSetParams(&c_stream, params, sizeof(params) / sizeof(params[0]));
+#else
+        error("test_large_deflate() called with zng_params=1 in compat mode\n");
+#endif
+    } else {
+        PREFIX(deflateParams)(&c_stream, Z_NO_COMPRESSION, Z_DEFAULT_STRATEGY);
+    }
+    c_stream.next_in = compr;
+    diff = (unsigned int)(c_stream.next_out - compr);
+    c_stream.avail_in = diff;
+    err = PREFIX(deflate)(&c_stream, Z_NO_FLUSH);
+    CHECK_ERR(err, "deflate");
+
+    /* Switch back to compressing mode: */
+    if (zng_params) {
+#ifndef ZLIB_COMPAT
+        level = -1;
+        strategy = -1;
+        zng_deflateGetParams(&c_stream, params, sizeof(params) / sizeof(params[0]));
+        if (level != Z_NO_COMPRESSION)
+            error("Expected compression level Z_NO_COMPRESSION, got %d\n", level);
+        if (strategy != Z_DEFAULT_STRATEGY)
+            error("Expected compression strategy Z_DEFAULT_STRATEGY, got %d\n", strategy);
+        level = Z_BEST_COMPRESSION;
+        strategy = Z_FILTERED;
+        zng_deflateSetParams(&c_stream, params, sizeof(params) / sizeof(params[0]));
+#else
+        error("test_large_deflate() called with zng_params=1 in compat mode\n");
+#endif
+    } else {
+        PREFIX(deflateParams)(&c_stream, Z_BEST_COMPRESSION, Z_FILTERED);
+    }
+    c_stream.next_in = uncompr;
+    c_stream.avail_in = (unsigned int)uncomprLen;
+    err = PREFIX(deflate)(&c_stream, Z_NO_FLUSH);
+    CHECK_ERR(err, "deflate");
+
+    err = PREFIX(deflate)(&c_stream, Z_FINISH);
+    if (err != Z_STREAM_END)
+        error("deflate should report Z_STREAM_END\n");
+    err = PREFIX(deflateEnd)(&c_stream);
+    CHECK_ERR(err, "deflateEnd");
+}
+
+/* ===========================================================================
+ * Test inflate() with large buffers
+ */
+static void test_large_inflate(unsigned char *compr, size_t comprLen, unsigned char *uncompr, size_t uncomprLen) {
+    int err;
+    PREFIX3(stream) d_stream; /* decompression stream */
+
+    strcpy((char*)uncompr, "garbage");
+
+    d_stream.zalloc = zalloc;
+    d_stream.zfree = zfree;
+    d_stream.opaque = (void *)0;
+
+    d_stream.next_in  = compr;
+    d_stream.avail_in = (unsigned int)comprLen;
+    d_stream.total_in = 0;
+    d_stream.total_out = 0;
+
+    err = PREFIX(inflateInit)(&d_stream);
+    CHECK_ERR(err, "inflateInit");
+
+    for (;;) {
+        d_stream.next_out = uncompr;            /* discard the output */
+        d_stream.avail_out = (unsigned int)uncomprLen;
+        err = PREFIX(inflate)(&d_stream, Z_NO_FLUSH);
+        if (err == Z_STREAM_END) break;
+        CHECK_ERR(err, "large inflate");
+    }
+
+    err = PREFIX(inflateEnd)(&d_stream);
+    CHECK_ERR(err, "inflateEnd");
+
+    if (d_stream.total_out != 2*uncomprLen + diff)
+        error("bad large inflate: %" PRIu64 "\n", (uint64_t)d_stream.total_out);
+    else
+        printf("large_inflate(): OK\n");
+}
+
+/* ===========================================================================
+ * Test deflate() with full flush
+ */
+static void test_flush(unsigned char *compr, z_uintmax_t *comprLen) {
+    PREFIX3(stream) c_stream; /* compression stream */
+    int err;
+    unsigned int len = (unsigned int)strlen(hello)+1;
+
+    c_stream.zalloc = zalloc;
+    c_stream.zfree = zfree;
+    c_stream.opaque = (void *)0;
+
+    err = PREFIX(deflateInit)(&c_stream, Z_DEFAULT_COMPRESSION);
+    CHECK_ERR(err, "deflateInit");
+
+    c_stream.next_in  = (z_const unsigned char *)hello;
+    c_stream.next_out = compr;
+    c_stream.avail_in = 3;
+    c_stream.avail_out = (unsigned int)*comprLen;
+    err = PREFIX(deflate)(&c_stream, Z_FULL_FLUSH);
+    CHECK_ERR(err, "deflate");
+
+    compr[3]++; /* force an error in first compressed block */
+    c_stream.avail_in = len - 3;
+
+    err = PREFIX(deflate)(&c_stream, Z_FINISH);
+    if (err != Z_STREAM_END) {
+        CHECK_ERR(err, "deflate");
+    }
+    err = PREFIX(deflateEnd)(&c_stream);
+    CHECK_ERR(err, "deflateEnd");
+
+    *comprLen = (z_size_t)c_stream.total_out;
+}
+
+#ifndef TEST_STOCK_ZLIB
+/* ===========================================================================
+ * Test inflateSync()
+ * We expect a certain compressed block layout, so skip this with the original zlib.
+ */
+static void test_sync(unsigned char *compr, size_t comprLen, unsigned char *uncompr, size_t uncomprLen) {
+    int err;
+    PREFIX3(stream) d_stream; /* decompression stream */
+
+    strcpy((char*)uncompr, "garbage");
+
+    d_stream.zalloc = zalloc;
+    d_stream.zfree = zfree;
+    d_stream.opaque = (void *)0;
+
+    d_stream.next_in  = compr;
+    d_stream.avail_in = 2; /* just read the zlib header */
+
+    err = PREFIX(inflateInit)(&d_stream);
+    CHECK_ERR(err, "inflateInit");
+
+    d_stream.next_out = uncompr;
+    d_stream.avail_out = (unsigned int)uncomprLen;
+
+    err = PREFIX(inflate)(&d_stream, Z_NO_FLUSH);
+    CHECK_ERR(err, "inflate");
+
+    d_stream.avail_in = (unsigned int)comprLen-2;   /* read all compressed data */
+    err = PREFIX(inflateSync)(&d_stream);           /* but skip the damaged part */
+    CHECK_ERR(err, "inflateSync");
+
+    err = PREFIX(inflate)(&d_stream, Z_FINISH);
+    if (err != Z_STREAM_END)
+        error("inflate should report Z_STREAM_END\n");
+    err = PREFIX(inflateEnd)(&d_stream);
+    CHECK_ERR(err, "inflateEnd");
+
+    printf("after inflateSync(): hel%s\n", (char *)uncompr);
+}
+#endif
+
+/* ===========================================================================
+ * Test deflate() with preset dictionary
+ */
+static void test_dict_deflate(unsigned char *compr, size_t comprLen) {
+    PREFIX3(stream) c_stream; /* compression stream */
+    int err;
+
+    c_stream.zalloc = zalloc;
+    c_stream.zfree = zfree;
+    c_stream.opaque = (void *)0;
+    c_stream.adler = 0;
+
+    err = PREFIX(deflateInit)(&c_stream, Z_BEST_COMPRESSION);
+    CHECK_ERR(err, "deflateInit");
+
+    err = PREFIX(deflateSetDictionary)(&c_stream,
+                (const unsigned char*)dictionary, (int)sizeof(dictionary));
+    CHECK_ERR(err, "deflateSetDictionary");
+
+    dictId = c_stream.adler;
+    c_stream.next_out = compr;
+    c_stream.avail_out = (unsigned int)comprLen;
+
+    c_stream.next_in = (z_const unsigned char *)hello;
+    c_stream.avail_in = (unsigned int)strlen(hello)+1;
+
+    err = PREFIX(deflate)(&c_stream, Z_FINISH);
+    if (err != Z_STREAM_END)
+        error("deflate should report Z_STREAM_END\n");
+    err = PREFIX(deflateEnd)(&c_stream);
+    CHECK_ERR(err, "deflateEnd");
+}
+
+/* ===========================================================================
+ * Test inflate() with a preset dictionary
+ */
+static void test_dict_inflate(unsigned char *compr, size_t comprLen, unsigned char *uncompr, size_t uncomprLen) {
+    int err;
+    uint8_t check_dictionary[MAX_DICTIONARY_SIZE];
+    uint32_t check_dictionary_len = 0;
+    PREFIX3(stream) d_stream; /* decompression stream */
+
+    strcpy((char*)uncompr, "garbage garbage garbage");
+
+    d_stream.zalloc = zalloc;
+    d_stream.zfree = zfree;
+    d_stream.opaque = (void *)0;
+    d_stream.adler = 0;
+    d_stream.next_in  = compr;
+    d_stream.avail_in = (unsigned int)comprLen;
+
+    err = PREFIX(inflateInit)(&d_stream);
+    CHECK_ERR(err, "inflateInit");
+
+    d_stream.next_out = uncompr;
+    d_stream.avail_out = (unsigned int)uncomprLen;
+
+    for (;;) {
+        err = PREFIX(inflate)(&d_stream, Z_NO_FLUSH);
+        if (err == Z_STREAM_END) break;
+        if (err == Z_NEED_DICT) {
+            if (d_stream.adler != dictId)
+                error("unexpected dictionary");
+            err = PREFIX(inflateSetDictionary)(&d_stream, (const unsigned char*)dictionary,
+                                       (int)sizeof(dictionary));
+        }
+        CHECK_ERR(err, "inflate with dict");
+    }
+
+    err = PREFIX(inflateGetDictionary)(&d_stream, NULL, &check_dictionary_len);
+    CHECK_ERR(err, "inflateGetDictionary");
+#ifndef S390_DFLTCC_INFLATE
+    if (check_dictionary_len < sizeof(dictionary))
+        error("bad dictionary length\n");
+#endif
+
+    err = PREFIX(inflateGetDictionary)(&d_stream, check_dictionary, &check_dictionary_len);
+    CHECK_ERR(err, "inflateGetDictionary");
+#ifndef S390_DFLTCC_INFLATE
+    if (memcmp(dictionary, check_dictionary, sizeof(dictionary)) != 0)
+        error("bad dictionary\n");
+#endif
+
+    err = PREFIX(inflateEnd)(&d_stream);
+    CHECK_ERR(err, "inflateEnd");
+
+    if (strncmp((char*)uncompr, hello, sizeof(hello)))
+        error("bad inflate with dict\n");
+    else
+        printf("inflate with dictionary: %s\n", (char *)uncompr);
+}
+
+/* ===========================================================================
+ * Test deflateBound() with small buffers
+ */
+static void test_deflate_bound(void) {
+    PREFIX3(stream) c_stream; /* compression stream */
+    int err;
+    unsigned int len = (unsigned int)strlen(hello)+1;
+    int estimateLen = 0;
+    unsigned char *outBuf = NULL;
+
+    c_stream.zalloc = zalloc;
+    c_stream.zfree = zfree;
+    c_stream.opaque = (voidpf)0;
+    c_stream.avail_in = len;
+    c_stream.next_in = (z_const unsigned char *)hello;
+    c_stream.avail_out = 0;
+    c_stream.next_out = outBuf;
+
+    err = PREFIX(deflateInit)(&c_stream, Z_DEFAULT_COMPRESSION);
+    CHECK_ERR(err, "deflateInit");
+
+    /* calculate actual output length and update structure */
+    estimateLen = PREFIX(deflateBound)(&c_stream, len);
+    outBuf = malloc(estimateLen);
+
+    if (outBuf != NULL) {
+        /* update zlib configuration */
+        c_stream.avail_out = estimateLen;
+        c_stream.next_out = outBuf;
+
+        /* do the compression */
+        err = PREFIX(deflate)(&c_stream, Z_FINISH);
+        if (err == Z_STREAM_END) {
+            printf("deflateBound(): OK\n");
+        } else {
+            CHECK_ERR(err, "deflate");
+        }
+    }
+
+    err = PREFIX(deflateEnd)(&c_stream);
+    CHECK_ERR(err, "deflateEnd");
+
+    free(outBuf);
+}
+
+/* ===========================================================================
+ * Test deflateCopy() with small buffers
+ */
+static void test_deflate_copy(unsigned char *compr, size_t comprLen) {
+    PREFIX3(stream) c_stream, c_stream_copy; /* compression stream */
+    int err;
+    size_t len = strlen(hello)+1;
+
+    memset(&c_stream, 0, sizeof(c_stream));
+
+    c_stream.zalloc = zalloc;
+    c_stream.zfree = zfree;
+    c_stream.opaque = (voidpf)0;
+
+    err = PREFIX(deflateInit)(&c_stream, Z_DEFAULT_COMPRESSION);
+    CHECK_ERR(err, "deflateInit");
+
+    c_stream.next_in = (z_const unsigned char *)hello;
+    c_stream.next_out = compr;
+
+    while (c_stream.total_in != len && c_stream.total_out < comprLen) {
+        c_stream.avail_in = c_stream.avail_out = 1; /* force small buffers */
+        err = PREFIX(deflate)(&c_stream, Z_NO_FLUSH);
+        CHECK_ERR(err, "deflate");
+    }
+
+    /* Finish the stream, still forcing small buffers: */
+    for (;;) {
+        c_stream.avail_out = 1;
+        err = PREFIX(deflate)(&c_stream, Z_FINISH);
+        if (err == Z_STREAM_END) break;
+        CHECK_ERR(err, "deflate");
+    }
+
+    err = PREFIX(deflateCopy)(&c_stream_copy, &c_stream);
+    CHECK_ERR(err, "deflate_copy");
+
+    if (c_stream.state->status == c_stream_copy.state->status) {
+        printf("deflate_copy(): OK\n");
+    }
+
+    err = PREFIX(deflateEnd)(&c_stream);
+    CHECK_ERR(err, "deflateEnd original");
+
+    err = PREFIX(deflateEnd)(&c_stream_copy);
+    CHECK_ERR(err, "deflateEnd copy");
+}
+
+/* ===========================================================================
+ * Test deflateGetDictionary() with small buffers
+ */
+static void test_deflate_get_dict(unsigned char *compr, size_t comprLen) {
+    PREFIX3(stream) c_stream; /* compression stream */
+    int err;
+    unsigned char *dictNew = NULL;
+    z_uint32_t *dictLen;
+
+    c_stream.zalloc = zalloc;
+    c_stream.zfree = zfree;
+    c_stream.opaque = (voidpf)0;
+
+    err = PREFIX(deflateInit)(&c_stream, Z_BEST_COMPRESSION);
+    CHECK_ERR(err, "deflateInit");
+
+    c_stream.next_out = compr;
+    c_stream.avail_out = (uInt)comprLen;
+
+    c_stream.next_in = (z_const unsigned char *)hello;
+    c_stream.avail_in = (unsigned int)strlen(hello)+1;
+
+    err = PREFIX(deflate)(&c_stream, Z_FINISH);
+
+    if (err != Z_STREAM_END)
+        error("deflate should report Z_STREAM_END\n");
+
+    dictNew = calloc(256, 1);
+    dictLen = (z_uint32_t *)calloc(4, 1);
+    err = PREFIX(deflateGetDictionary)(&c_stream, dictNew, dictLen);
+
+    CHECK_ERR(err, "deflateGetDictionary");
+    if (err == Z_OK) {
+        printf("deflateGetDictionary(): %s\n", dictNew);
+    }
+
+    err = PREFIX(deflateEnd)(&c_stream);
+    CHECK_ERR(err, "deflateEnd");
+
+    free(dictNew);
+    free(dictLen);
+}
+
+/* ===========================================================================
+ * Test deflatePending() with small buffers
+ */
+static void test_deflate_pending(unsigned char *compr, size_t comprLen) {
+    PREFIX3(stream) c_stream; /* compression stream */
+    int err;
+    z_int32_t *bits = calloc(256, 1);
+    z_uint32_t *ped = calloc(256, 1);
+    size_t len = strlen(hello)+1;
+
+
+    c_stream.zalloc = zalloc;
+    c_stream.zfree = zfree;
+    c_stream.opaque = (voidpf)0;
+
+    err = PREFIX(deflateInit)(&c_stream, Z_DEFAULT_COMPRESSION);
+    CHECK_ERR(err, "deflateInit");
+
+    c_stream.next_in = (z_const unsigned char *)hello;
+    c_stream.next_out = compr;
+
+    while (c_stream.total_in != len && c_stream.total_out < comprLen) {
+        c_stream.avail_in = c_stream.avail_out = 1; /* force small buffers */
+        err = PREFIX(deflate)(&c_stream, Z_NO_FLUSH);
+        CHECK_ERR(err, "deflate");
+    }
+
+    err = PREFIX(deflatePending)(&c_stream, ped, bits);
+    CHECK_ERR(err, "deflatePending");
+
+    if (*bits >= 0 && *bits <= 7) {
+        printf("deflatePending(): OK\n");
+    } else {
+        printf("deflatePending(): error\n");
+    }
+
+    /* Finish the stream, still forcing small buffers: */
+    for (;;) {
+        c_stream.avail_out = 1;
+        err = PREFIX(deflate)(&c_stream, Z_FINISH);
+        if (err == Z_STREAM_END) break;
+        CHECK_ERR(err, "deflate");
+    }
+
+    err = PREFIX(deflateEnd)(&c_stream);
+    CHECK_ERR(err, "deflateEnd");
+
+    free(bits);
+    free(ped);
+}
+
+/* ===========================================================================
+ * Test deflatePrime() wrapping gzip around deflate stream
+ */
+static void test_deflate_prime(unsigned char *compr, size_t comprLen, unsigned char *uncompr, size_t uncomprLen) {
+    PREFIX3(stream) c_stream; /* compression stream */
+    PREFIX3(stream) d_stream; /* decompression stream */
+    int err;
+    size_t len = strlen(hello)+1;
+    uint32_t crc = 0;
+
+
+    c_stream.zalloc = zalloc;
+    c_stream.zfree = zfree;
+    c_stream.opaque = (voidpf)0;
+
+    /* Raw deflate windowBits is -15 */
+    err = PREFIX(deflateInit2)(&c_stream, Z_DEFAULT_COMPRESSION, Z_DEFLATED, -MAX_WBITS, 8, Z_DEFAULT_STRATEGY);
+    CHECK_ERR(err, "deflateInit2");
+
+    /* Gzip magic number */
+    err = PREFIX(deflatePrime)(&c_stream, 16, 0x8b1f);
+    CHECK_ERR(err, "deflatePrime");
+    /* Gzip compression method (deflate) */
+    err = PREFIX(deflatePrime)(&c_stream, 8, 0x08);
+    CHECK_ERR(err, "deflatePrime");
+    /* Gzip flags (one byte, using two odd bit calls) */
+    err = PREFIX(deflatePrime)(&c_stream, 3, 0x0);
+    CHECK_ERR(err, "deflatePrime");
+    err = PREFIX(deflatePrime)(&c_stream, 5, 0x0);
+    CHECK_ERR(err, "deflatePrime");
+    /* Gzip modified time */
+    err = deflate_prime_32(&c_stream, 0);
+    CHECK_ERR(err, "deflatePrime");
+    /* Gzip extra flags */
+    err = PREFIX(deflatePrime)(&c_stream, 8, 0x0);
+    CHECK_ERR(err, "deflatePrime");
+    /* Gzip operating system */
+    err = PREFIX(deflatePrime)(&c_stream, 8, 255);
+    CHECK_ERR(err, "deflatePrime");
+
+    c_stream.next_in = (z_const unsigned char *)hello;
+    c_stream.avail_in = (uint32_t)len;
+    c_stream.next_out = compr;
+    c_stream.avail_out = (uint32_t)comprLen;
+
+    err = PREFIX(deflate)(&c_stream, Z_FINISH);
+    if (err != Z_STREAM_END)
+        CHECK_ERR(err, "deflate");
+
+    /* Gzip uncompressed data crc32 */
+    crc = PREFIX(crc32)(0, (const uint8_t *)hello, (uint32_t)len);
+    err = deflate_prime_32(&c_stream, crc);
+    CHECK_ERR(err, "deflatePrime");
+    /* Gzip uncompressed data length */
+    err = deflate_prime_32(&c_stream, (uint32_t)len);
+    CHECK_ERR(err, "deflatePrime");
+
+    err = PREFIX(deflateEnd)(&c_stream);
+    CHECK_ERR(err, "deflateEnd");
+
+    d_stream.zalloc = zalloc;
+    d_stream.zfree = zfree;
+    d_stream.opaque = (void *)0;
+
+    d_stream.next_in  = compr;
+    d_stream.avail_in = (uint32_t)c_stream.total_out;
+    d_stream.next_out = uncompr;
+    d_stream.avail_out = (uint32_t)uncomprLen;
+    d_stream.total_in = 0;
+    d_stream.total_out = 0;
+
+    /* Inflate with gzip header */
+    err = PREFIX(inflateInit2)(&d_stream, MAX_WBITS + 32);
+    CHECK_ERR(err, "inflateInit");
+
+    err = PREFIX(inflate)(&d_stream, Z_FINISH);
+    if (err != Z_BUF_ERROR) {
+        CHECK_ERR(err, "inflate");
+    }
+
+    err = PREFIX(inflateEnd)(&d_stream);
+    CHECK_ERR(err, "inflateEnd");
+
+    if (strcmp((const char *)uncompr, hello) != 0)
+        error("bad deflatePrime\n");
+    if (err == Z_OK)
+        printf("deflatePrime(): OK\n");
+}
+
+/* ===========================================================================
+ * Test deflateSetHeader() with small buffers
+ */
+static void test_deflate_set_header(unsigned char *compr, size_t comprLen) {
+    PREFIX(gz_header) *head = calloc(1, sizeof(PREFIX(gz_header)));
+    PREFIX3(stream) c_stream; /* compression stream */
+    int err;
+    size_t len = strlen(hello)+1;
+
+
+    if (head == NULL)
+        error("out of memory\n");
+
+    c_stream.zalloc = zalloc;
+    c_stream.zfree = zfree;
+    c_stream.opaque = (voidpf)0;
+
+    /* gzip */
+    err = PREFIX(deflateInit2)(&c_stream, Z_DEFAULT_COMPRESSION, Z_DEFLATED, MAX_WBITS + 16, 8, Z_DEFAULT_STRATEGY);
+    CHECK_ERR(err, "deflateInit2");
+
+    head->text = 1;
+    head->comment = (uint8_t *)"comment";
+    head->name = (uint8_t *)"name";
+    head->hcrc = 1;
+    head->extra = (uint8_t *)"extra";
+    head->extra_len = (uint32_t)strlen((const char *)head->extra);
+
+    err = PREFIX(deflateSetHeader)(&c_stream, head);
+    CHECK_ERR(err, "deflateSetHeader");
+    if (err == Z_OK) {
+        printf("deflateSetHeader(): OK\n");
+    }
+    PREFIX(deflateBound)(&c_stream, (unsigned long)comprLen);
+
+    c_stream.next_in  = (unsigned char *)hello;
+    c_stream.next_out = compr;
+
+    while (c_stream.total_in != len && c_stream.total_out < comprLen) {
+        c_stream.avail_in = c_stream.avail_out = 1; /* force small buffers */
+        err = PREFIX(deflate)(&c_stream, Z_NO_FLUSH);
+        CHECK_ERR(err, "deflate");
+    }
+
+    /* Finish the stream, still forcing small buffers: */
+    for (;;) {
+        c_stream.avail_out = 1;
+        err = PREFIX(deflate)(&c_stream, Z_FINISH);
+        if (err == Z_STREAM_END) break;
+        CHECK_ERR(err, "deflate");
+    }
+
+    err = PREFIX(deflateEnd)(&c_stream);
+    CHECK_ERR(err, "deflateEnd");
+
+    free(head);
+}
+
+/* ===========================================================================
+ * Test deflateTune() with small buffers
+ */
+static void test_deflate_tune(unsigned char *compr, size_t comprLen) {
+    PREFIX3(stream) c_stream; /* compression stream */
+    int err;
+    int good_length = 3;
+    int max_lazy = 5;
+    int nice_length = 18;
+    int max_chain = 6;
+    size_t len = strlen(hello)+1;
+
+
+    c_stream.zalloc = zalloc;
+    c_stream.zfree = zfree;
+    c_stream.opaque = (voidpf)0;
+
+    err = PREFIX(deflateInit)(&c_stream, Z_BEST_COMPRESSION);
+    CHECK_ERR(err, "deflateInit");
+
+    err = PREFIX(deflateTune)(&c_stream,(uInt)good_length,(uInt)max_lazy,nice_length,(uInt)max_chain);
+    CHECK_ERR(err, "deflateTune");
+    if (err == Z_OK) {
+        printf("deflateTune(): OK\n");
+    }
+
+    c_stream.next_in = (z_const unsigned char *)hello;
+    c_stream.next_out = compr;
+
+    while (c_stream.total_in != len && c_stream.total_out < comprLen) {
+        c_stream.avail_in = c_stream.avail_out = 1; /* force small buffers */
+        err = PREFIX(deflate)(&c_stream, Z_NO_FLUSH);
+        CHECK_ERR(err, "deflate");
+    }
+
+    /* Finish the stream, still forcing small buffers: */
+    for (;;) {
+        c_stream.avail_out = 1;
+        err = PREFIX(deflate)(&c_stream, Z_FINISH);
+        if (err == Z_STREAM_END) break;
+        CHECK_ERR(err, "deflate");
+    }
+
+    err = PREFIX(deflateEnd)(&c_stream);
+    CHECK_ERR(err, "deflateEnd");
+}
+
+/* ===========================================================================
+ * Usage:  example [output.gz  [input.gz]]
+ */
+int main(int argc, char *argv[]) {
+    unsigned char *compr, *uncompr;
+    z_uintmax_t comprLen = 10000*sizeof(int); /* don't overflow on MSDOS */
+    z_uintmax_t uncomprLen = comprLen;
+    static const char* myVersion = PREFIX2(VERSION);
+
+    if (zVersion()[0] != myVersion[0]) {
+        fprintf(stderr, "incompatible zlib version\n");
+        exit(1);
+
+    } else if (strcmp(zVersion(), PREFIX2(VERSION)) != 0) {
+        fprintf(stderr, "warning: different zlib version linked: %s\n", zVersion());
+    }
+
+    printf("zlib-ng version %s = 0x%08lx, compile flags = 0x%lx\n",
+            ZLIBNG_VERSION, ZLIBNG_VERNUM, PREFIX(zlibCompileFlags)());
+
+    compr    = (unsigned char*)calloc((unsigned int)comprLen, 1);
+    uncompr  = (unsigned char*)calloc((unsigned int)uncomprLen, 1);
+    /* compr and uncompr are cleared to avoid reading uninitialized
+     * data and to ensure that uncompr compresses well.
+     */
+    if (compr == NULL || uncompr == NULL)
+        error("out of memory\n");
+
+    test_compress(compr, comprLen, uncompr, uncomprLen);
+
+    test_gzio((argc > 1 ? argv[1] : TESTFILE),
+              uncompr, uncomprLen);
+
+    test_deflate(compr, comprLen);
+    test_inflate(compr, comprLen, uncompr, uncomprLen);
+
+    test_large_deflate(compr, comprLen, uncompr, uncomprLen, 0);
+    test_large_inflate(compr, comprLen, uncompr, uncomprLen);
+
+#ifndef ZLIB_COMPAT
+    test_large_deflate(compr, comprLen, uncompr, uncomprLen, 1);
+    test_large_inflate(compr, comprLen, uncompr, uncomprLen);
+#endif
+
+    test_flush(compr, &comprLen);
+#ifndef TEST_STOCK_ZLIB
+    test_sync(compr, comprLen, uncompr, uncomprLen);
+#endif
+    comprLen = uncomprLen;
+
+    test_dict_deflate(compr, comprLen);
+    test_dict_inflate(compr, comprLen, uncompr, uncomprLen);
+
+    test_deflate_bound();
+    test_deflate_copy(compr, comprLen);
+    test_deflate_get_dict(compr, comprLen);
+    test_deflate_set_header(compr, comprLen);
+    test_deflate_tune(compr, comprLen);
+    test_deflate_pending(compr, comprLen);
+    test_deflate_prime(compr, comprLen, uncompr, uncomprLen);
+
+    free(compr);
+    free(uncompr);
+
+    return 0;
+}