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constbuf Class Reference

Inherited by databuf.

List of all members.

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Detailed Description

An immutable data buffer.

Equivalent to a pair<const void*, size_t>: this is just a convenient way of passing a reference to an immutable data buffer.

Public Methods
	constbuf ()
	Null constructor.
	constbuf (const void *dat, unsigned int len)
	Constructs a reference to an immutable data buffer.
	constbuf (const string &s)
	Constructs a reference to a string.
const char *	data () const
	Returns a pointer to the beginning of the data buffer.
unsigned int	length () const
	Returns the length of the data buffer.
	operator const void * () const
	Returns a non-null value if the data buffer is non-null.
	operator string () const
	Returns the constbuf as a string (always makes a copy).
string	as_string () const
	Returns a human-readable representation of the data buffer.
Protected Attributes
char *	dat
unsigned int	len

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Constructor & Destructor Documentation

constbuf::constbuf (    )

Null constructor.

constbuf::constbuf (  const void *    dat, unsigned int    len )

Constructs a reference to an immutable data buffer.

constbuf::constbuf (  const string &    s )  [explicit]

Constructs a reference to a string. This constbuf will cease to be valid whenever the value of s.data() changes, i.e., whenever any of s's iterators are invalidated or the string is destructed.

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Member Function Documentation

string constbuf::as_string (    )  const

Returns a human-readable representation of the data buffer.

const char* constbuf::data (    )  const

Returns a pointer to the beginning of the data buffer.

unsigned int constbuf::length (    )  const

Returns the length of the data buffer.

constbuf::operator const void * (    )  const

Returns a non-null value if the data buffer is non-null. Exists to enable the if (buf) { ... } metaphor.

constbuf::operator string (    )  const

Returns the constbuf as a string (always makes a copy).

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Member Data Documentation

char* constbuf::dat [protected]

unsigned int constbuf::len [protected]

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The documentation for this class was generated from the following file:

• io

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