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usr / src / contrib / subversion / subversion / libsvn_subr /

📁 ..
📄 adler32.c(3.16 KB)
📄 atomic.c(7.23 KB)
📄 auth.c(32.4 KB)
📄 auth.h(6.1 KB)
📄 base64.c(19.18 KB)
📄 bit_array.c(6.26 KB)
📄 cache-inprocess.c(21.2 KB)
📄 cache-membuffer.c(116.43 KB)
📄 cache-memcache.c(17.35 KB)
📄 cache-null.c(4.35 KB)
📄 cache.c(10.22 KB)
📄 cache.h(4.03 KB)
📄 cache_config.c(6.01 KB)
📄 checksum.c(24.17 KB)
📄 checksum.h(2.32 KB)
📄 cmdline.c(58.99 KB)
📄 compat.c(5.28 KB)
📄 compress_lz4.c(4.51 KB)
📄 compress_zlib.c(6.85 KB)
📄 config.c(39.66 KB)
📄 config_auth.c(8.65 KB)
📄 config_file.c(70.25 KB)
📄 config_impl.h(6.15 KB)
📄 config_keys.inc(2.65 KB)
📄 config_win.c(9.61 KB)
📄 crypto.c(25.19 KB)
📄 crypto.h(5.43 KB)
📄 ctype.c(13.81 KB)
📄 date.c(12.86 KB)
📄 debug.c(3.77 KB)
📄 deprecated.c(64.3 KB)
📄 dirent_uri.c(80.17 KB)
📄 dirent_uri.h(1.43 KB)
📄 dso.c(3.74 KB)
📄 encode.c(2.69 KB)
📄 eol.c(2.79 KB)
📄 error.c(24.52 KB)
📄 errorcode.inc(4.27 KB)
📄 fnv1a.c(6.92 KB)
📄 fnv1a.h(3.04 KB)
📄 genctype.py(3.84 KB)
📄 gpg_agent.c(22.29 KB)
📄 hash.c(19.59 KB)
📄 internal_statements.h(1.87 KB)
📄 internal_statements.sql(1.58 KB)
📄 io.c(182.6 KB)
📄 iter.c(3.84 KB)
📄 libsvn_subr.pc.in(515 B)
📄 lock.c(1.69 KB)
📄 log.c(14 KB)
📁 lz4
📄 macos_keychain.c(9.7 KB)
📄 magic.c(5.25 KB)
📄 md5.c(1.8 KB)
📄 mergeinfo.c(89.24 KB)
📄 mutex.c(3.06 KB)
📄 nls.c(3.06 KB)
📄 object_pool.c(9.76 KB)
📄 opt.c(39.34 KB)
📄 opt.h(1.89 KB)
📄 packed_data.c(33.43 KB)
📄 path.c(35.99 KB)
📄 pool.c(4.35 KB)
📄 pools.h(1.45 KB)
📄 prefix_string.c(10.65 KB)
📄 prompt.c(28.82 KB)
📄 properties.c(13.59 KB)
📄 quoprint.c(8.96 KB)
📄 root_pools.c(3.15 KB)
📄 simple_providers.c(25.54 KB)
📄 skel.c(23.04 KB)
📄 sorts.c(15.9 KB)
📄 spillbuf.c(19.78 KB)
📄 sqlite.c(49.68 KB)
📄 sqlite3wrapper.c(3.16 KB)
📄 ssl_client_cert_providers.c(6.66 KB)
📄 ssl_client_cert_pw_providers.c(18.93 KB)
📄 ssl_server_trust_providers.c(7.77 KB)
📄 stream.c(65.69 KB)
📄 string.c(40.2 KB)
📄 subst.c(67.57 KB)
📄 sysinfo.c(43.67 KB)
📄 sysinfo.h(2.58 KB)
📄 target.c(11.58 KB)
📄 temp_serializer.c(14.02 KB)
📄 time.c(9.08 KB)
📄 token.c(2.58 KB)
📄 types.c(9.43 KB)
📄 user.c(2.66 KB)
📄 username_providers.c(9.2 KB)
📄 utf.c(40.38 KB)
📁 utf8proc
📄 utf8proc.c(20.71 KB)
📄 utf_validate.c(13.3 KB)
📄 utf_width.c(10.85 KB)
📄 validate.c(3.35 KB)
📄 version.c(9.89 KB)
📄 win32_crashrpt.c(25.06 KB)
📄 win32_crashrpt.h(1.35 KB)
📄 win32_crashrpt_dll.h(4 KB)
📄 win32_crypto.c(18.12 KB)
📄 win32_xlate.c(7.3 KB)
📄 win32_xlate.h(2.11 KB)
📄 x509.h(3.75 KB)
📄 x509info.c(9.53 KB)
📄 x509parse.c(35.77 KB)
📄 xml.c(20.01 KB)

Editing: compress_lz4.c

/*
 * compress_lz4.c:  LZ4 data compression routines
 *
 * ====================================================================
 *    Licensed to the Apache Software Foundation (ASF) under one
 *    or more contributor license agreements.  See the NOTICE file
 *    distributed with this work for additional information
 *    regarding copyright ownership.  The ASF licenses this file
 *    to you under the Apache License, Version 2.0 (the
 *    "License"); you may not use this file except in compliance
 *    with the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *    Unless required by applicable law or agreed to in writing,
 *    software distributed under the License is distributed on an
 *    "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 *    KIND, either express or implied.  See the License for the
 *    specific language governing permissions and limitations
 *    under the License.
 * ====================================================================
 */

#include <assert.h>

#include "private/svn_subr_private.h"

#include "svn_private_config.h"

#ifdef SVN_INTERNAL_LZ4
#include "lz4/lz4internal.h"
#else
#include <lz4.h>
#endif

svn_error_t *
svn__compress_lz4(const void *data, apr_size_t len,
                  svn_stringbuf_t *out)
{
  apr_size_t hdrlen;
  unsigned char buf[SVN__MAX_ENCODED_UINT_LEN];
  unsigned char *p;
  int compressed_data_len;
  int max_compressed_data_len;

assert(len <= LZ4_MAX_INPUT_SIZE);

p = svn__encode_uint(buf, (apr_uint64_t)len);
  hdrlen = p - buf;
  max_compressed_data_len = LZ4_compressBound((int)len);
  svn_stringbuf_setempty(out);
  svn_stringbuf_ensure(out, max_compressed_data_len + hdrlen);
  svn_stringbuf_appendbytes(out, (const char *)buf, hdrlen);
  compressed_data_len = LZ4_compress_default(data, out->data + out->len,
                                             (int)len, max_compressed_data_len);
  if (!compressed_data_len)
    return svn_error_create(SVN_ERR_LZ4_COMPRESSION_FAILED, NULL, NULL);

if (compressed_data_len >= (int)len)
    {
      /* Compression didn't help :(, just append the original text */
      svn_stringbuf_appendbytes(out, data, len);
    }
  else
    {
      out->len += compressed_data_len;
      out->data[out->len] = 0;
    }

return SVN_NO_ERROR;
}

svn_error_t *
svn__decompress_lz4(const void *data, apr_size_t len,
                    svn_stringbuf_t *out,
                    apr_size_t limit)
{
  apr_size_t hdrlen;
  int compressed_data_len;
  int decompressed_data_len;
  apr_uint64_t u64;
  const unsigned char *p = data;
  int rv;

assert(len <= INT_MAX);
  assert(limit <= INT_MAX);

/* First thing in the string is the original length.  */
  p = svn__decode_uint(&u64, p, p + len);
  if (p == NULL)
    return svn_error_create(SVN_ERR_SVNDIFF_INVALID_COMPRESSED_DATA, NULL,
                            _("Decompression of compressed data failed: "
                              "no size"));
  if (u64 > limit)
    return svn_error_create(SVN_ERR_SVNDIFF_INVALID_COMPRESSED_DATA, NULL,
                            _("Decompression of compressed data failed: "
                              "size too large"));
  decompressed_data_len = (int)u64;
  hdrlen = p - (const unsigned char *)data;
  compressed_data_len = (int)(len - hdrlen);

svn_stringbuf_setempty(out);
  svn_stringbuf_ensure(out, decompressed_data_len);

if (compressed_data_len == decompressed_data_len)
    {
      /* Data is in the original, uncompressed form. */
      memcpy(out->data, p, decompressed_data_len);
    }
  else
    {
      rv = LZ4_decompress_safe((const char *)p, out->data, compressed_data_len,
                               decompressed_data_len);
      if (rv < 0)
        return svn_error_create(SVN_ERR_LZ4_DECOMPRESSION_FAILED, NULL, NULL);

if (rv != decompressed_data_len)
        return svn_error_create(SVN_ERR_SVNDIFF_INVALID_COMPRESSED_DATA,
                                NULL,
                                _("Size of uncompressed data "
                                  "does not match stored original length"));
    }

out->data[decompressed_data_len] = 0;
  out->len = decompressed_data_len;

return SVN_NO_ERROR;
}

const char *
svn_lz4__compiled_version(void)
{
  static const char lz4_version_str[] = APR_STRINGIFY(LZ4_VERSION_MAJOR) "." \
                                        APR_STRINGIFY(LZ4_VERSION_MINOR) "." \
                                        APR_STRINGIFY(LZ4_VERSION_RELEASE);

return lz4_version_str;
}

int
svn_lz4__runtime_version(void)
{
  return LZ4_versionNumber();
}

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Editing: compress_lz4.c

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