Copy a byte range from one blob into another at a destination offset.
Declared in <bdlbb_blobutil.h>
static
void
copy(
Blob* dst,
int dstOffset,
Blob const& src,
int srcOffset,
int length);Copy into the specified dst starting at the specified dstOffset the specified length bytes starting at the specified srcOffset in the specified src. The behavior is undefined unless 0 <= dstOffset, 0 <= srcOffset, 0 <= length, dst || 0 == length, !dst || dstOffset <= dst->length() - length, and srcOffset <= src->length() - length. Note that this operation does not require dst to have a blob buffer factory in that it does not create or destroy blobs -- it simply copies data from src into dst, so dst must already have room for length bytes of data added at dstOffset.
| Name | Description |
|---|---|
| dst | destination blob |
| dstOffset | starting byte offset in dst |
| src | source blob |
| srcOffset | starting byte offset in src |
| length | number of bytes to copy |