[#BloombergLP-bdlbb-BlobUtil]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlbb.adoc[bdlbb]::BlobUtil
:relfileprefix: ../../
:mrdocs:

This `struct` is a namespace for a collection of static methods used for manipulating and accessing `Blob` objects.

== Synopsis

Declared in `<bdlbb_blobutil.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
struct BlobUtil;
----

== Static Member Functions

[cols="1,4"]
|===
| Name| Description
| xref:BloombergLP/bdlbb/BlobUtil/append-09.adoc[`append`] 
| `append` overloads
| xref:BloombergLP/bdlbb/BlobUtil/appendBufferIfValid-07.adoc[`appendBufferIfValid`] 
| `appendBufferIfValid` overloads
| xref:BloombergLP/bdlbb/BlobUtil/appendDataBufferIfValid-0c.adoc[`appendDataBufferIfValid`] 
| `appendDataBufferIfValid` overloads
| xref:BloombergLP/bdlbb/BlobUtil/appendWithCapacityBuffer.adoc[`appendWithCapacityBuffer`] 
| Append bytes to `dest`, preferring existing then spare capacity.
| xref:BloombergLP/bdlbb/BlobUtil/asciiDump-0a.adoc[`asciiDump`] 
| `asciiDump` overloads
| xref:BloombergLP/bdlbb/BlobUtil/compare.adoc[`compare`] 
| Compare the data stored by two blobs lexicographically.
| xref:BloombergLP/bdlbb/BlobUtil/copy-06.adoc[`copy`] 
| `copy` overloads
| xref:BloombergLP/bdlbb/BlobUtil/erase.adoc[`erase`] 
| Erase a byte range from the specified blob.
| xref:BloombergLP/bdlbb/BlobUtil/findBufferIndexAndOffset.adoc[`findBufferIndexAndOffset`] 
| Return the buffer index and in‐buffer offset for a blob position.
| xref:BloombergLP/bdlbb/BlobUtil/getContiguousDataBuffer.adoc[`getContiguousDataBuffer`] 
| Grow a blob and return contiguous storage for the newly added bytes.
| xref:BloombergLP/bdlbb/BlobUtil/getContiguousRangeOrCopy.adoc[`getContiguousRangeOrCopy`] 
| Return a contiguous view of blob data, copying into a buffer if needed.
| xref:BloombergLP/bdlbb/BlobUtil/hexDump-0f.adoc[`hexDump`] 
| `hexDump` overloads
| xref:BloombergLP/bdlbb/BlobUtil/insert-0e.adoc[`insert`] 
| `insert` overloads
| xref:BloombergLP/bdlbb/BlobUtil/insertBufferIfValid-0f.adoc[`insertBufferIfValid`] 
| `insertBufferIfValid` overloads
| xref:BloombergLP/bdlbb/BlobUtil/padToAlignment.adoc[`padToAlignment`] 
| Pad a blob so its length is a multiple of the given alignment.
| xref:BloombergLP/bdlbb/BlobUtil/prependDataBufferIfValid-0b.adoc[`prependDataBufferIfValid`] 
| `prependDataBufferIfValid` overloads
| xref:BloombergLP/bdlbb/BlobUtil/prependWithCapacityBuffer.adoc[`prependWithCapacityBuffer`] 
| Prepend bytes to `dest`, preferring existing then spare capacity.
| xref:BloombergLP/bdlbb/BlobUtil/read.adoc[`read`] 
| Read bytes from a stream into a blob.
| xref:BloombergLP/bdlbb/BlobUtil/write-0cc.adoc[`write`] 
| `write` overloads
|===



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