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ZSTD_compress_usingDict() when dict gets loaded

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Specify that when `dict == NULL || dictSize < 8` no dictionary
gets loaded.
Also add some periods.
This commit is contained in:
Nick Terrell
2016-11-02 16:47:53 -07:00
parent 0a5a5fb7fd
commit d82efd8a70
4 changed files with 29 additions and 23 deletions
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24
doc/zstd_manual.html
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@ -58,7 +58,7 @@
</b><p> Compresses `src` content as a single zstd compressed frame into already allocated `dst`.
Hint : compression runs faster if `dstCapacity` >= `ZSTD_compressBound(srcSize)`.
@return : compressed size written into `dst` (<= `dstCapacity),
or an error code if it fails (which can be tested using ZSTD_isError())
or an error code if it fails (which can be tested using ZSTD_isError()).
</p></pre><BR>
<pre><b>size_t ZSTD_decompress( void* dst, size_t dstCapacity,
@ -67,7 +67,7 @@
`dstCapacity` is an upper bound of originalSize.
If user cannot imply a maximum upper bound, it's better to use streaming mode to decompress data.
@return : the number of bytes decompressed into `dst` (<= `dstCapacity`),
or an errorCode if it fails (which can be tested using ZSTD_isError())
or an errorCode if it fails (which can be tested using ZSTD_isError()).
</p></pre><BR>
<pre><b>unsigned long long ZSTD_getDecompressedSize(const void* src, size_t srcSize);
@ -96,7 +96,7 @@ const char* ZSTD_getErrorName(size_t code); </b>/*!< provides readable strin
<a name="Chapter4"></a><h2>Explicit memory management</h2><pre></pre>
<pre><b>size_t ZSTD_compressCCtx(ZSTD_CCtx* ctx, void* dst, size_t dstCapacity, const void* src, size_t srcSize, int compressionLevel);
</b><p> Same as ZSTD_compress(), requires an allocated ZSTD_CCtx (see ZSTD_createCCtx())
</b><p> Same as ZSTD_compress(), requires an allocated ZSTD_CCtx (see ZSTD_createCCtx()).
</p></pre><BR>
<h3>Decompression context</h3><pre><b>typedef struct ZSTD_DCtx_s ZSTD_DCtx;
@ -104,7 +104,7 @@ ZSTD_DCtx* ZSTD_createDCtx(void);
size_t ZSTD_freeDCtx(ZSTD_DCtx* dctx);
</b></pre><BR>
<pre><b>size_t ZSTD_decompressDCtx(ZSTD_DCtx* ctx, void* dst, size_t dstCapacity, const void* src, size_t srcSize);
</b><p> Same as ZSTD_decompress(), requires an allocated ZSTD_DCtx (see ZSTD_createDCtx())
</b><p> Same as ZSTD_decompress(), requires an allocated ZSTD_DCtx (see ZSTD_createDCtx()).
</p></pre><BR>
<a name="Chapter5"></a><h2>Simple dictionary API</h2><pre></pre>
@ -115,7 +115,8 @@ size_t ZSTD_freeDCtx(ZSTD_DCtx* dctx);
const void* dict,size_t dictSize,
int compressionLevel);
</b><p> Compression using a predefined Dictionary (see dictBuilder/zdict.h).
Note : This function load the dictionary, resulting in significant startup delay.
Note : This function loads the dictionary, resulting in significant startup delay.
Note : When `dict == NULL || dictSize < 8` no dictionary is used.
</p></pre><BR>
<pre><b>size_t ZSTD_decompress_usingDict(ZSTD_DCtx* dctx,
@ -124,7 +125,8 @@ size_t ZSTD_freeDCtx(ZSTD_DCtx* dctx);
const void* dict,size_t dictSize);
</b><p> Decompression using a predefined Dictionary (see dictBuilder/zdict.h).
Dictionary must be identical to the one used during compression.
Note : This function load the dictionary, resulting in significant startup delay
Note : This function loads the dictionary, resulting in significant startup delay.
Note : When `dict == NULL || dictSize < 8` no dictionary is used.
</p></pre><BR>
<a name="Chapter6"></a><h2>Fast dictionary API</h2><pre></pre>
@ -133,11 +135,11 @@ size_t ZSTD_freeDCtx(ZSTD_DCtx* dctx);
</b><p> When compressing multiple messages / blocks with the same dictionary, it's recommended to load it just once.
ZSTD_createCDict() will create a digested dictionary, ready to start future compression operations without startup delay.
ZSTD_CDict can be created once and used by multiple threads concurrently, as its usage is read-only.
`dict` can be released after ZSTD_CDict creation
`dict` can be released after ZSTD_CDict creation.
</p></pre><BR>
<pre><b>size_t ZSTD_freeCDict(ZSTD_CDict* CDict);
</b><p> Function frees memory allocated by ZSTD_createCDict()
</b><p> Function frees memory allocated by ZSTD_createCDict().
</p></pre><BR>
<pre><b>size_t ZSTD_compress_usingCDict(ZSTD_CCtx* cctx,
@ -146,12 +148,12 @@ size_t ZSTD_freeDCtx(ZSTD_DCtx* dctx);
const ZSTD_CDict* cdict);
</b><p> Compression using a digested Dictionary.
Faster startup than ZSTD_compress_usingDict(), recommended when same dictionary is used multiple times.
Note that compression level is decided during dictionary creation
Note that compression level is decided during dictionary creation.
</p></pre><BR>
<pre><b>ZSTD_DDict* ZSTD_createDDict(const void* dict, size_t dictSize);
</b><p> Create a digested dictionary, ready to start decompression operation without startup delay.
`dict` can be released after creation
`dict` can be released after creation.
</p></pre><BR>
<pre><b>size_t ZSTD_freeDDict(ZSTD_DDict* ddict);
@ -162,7 +164,7 @@ size_t ZSTD_freeDCtx(ZSTD_DCtx* dctx);
void* dst, size_t dstCapacity,
const void* src, size_t srcSize,
const ZSTD_DDict* ddict);
</b><p> Decompression using a digested Dictionary
</b><p> Decompression using a digested Dictionary.
Faster startup than ZSTD_decompress_usingDict(), recommended when same dictionary is used multiple times.
</p></pre><BR>