package saferio
Import Path
internal/saferio (on go.dev)
Dependency Relation
imports 2 packages, and imported by 8 packages
Involved Source Files
Package saferio provides I/O functions that avoid allocating large
amounts of memory unnecessarily. This is intended for packages that
read data from an [io.Reader] where the size is part of the input
data but the input may be corrupt, or may be provided by an
untrustworthy attacker.
Package-Level Functions (total 4)
ReadData reads n bytes from the input stream, but avoids allocating
all n bytes if n is large. This avoids crashing the program by
allocating all n bytes in cases where n is incorrect.
The error is io.EOF only if no bytes were read.
If an io.EOF happens after reading some but not all the bytes,
ReadData returns io.ErrUnexpectedEOF.
ReadDataAt reads n bytes from the input stream at off, but avoids
allocating all n bytes if n is large. This avoids crashing the program
by allocating all n bytes in cases where n is incorrect.
Type Parameters:
E: any
SliceCap is like SliceCapWithSize but using generics.
SliceCapWithSize returns the capacity to use when allocating a slice.
After the slice is allocated with the capacity, it should be
built using append. This will avoid allocating too much memory
if the capacity is large and incorrect.
A negative result means that the value is always too big.
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