Summary: Methods | [Expand All]
public interface

LineParser

org.apache.http.message.LineParser
Known Indirect Subclasses

Class Overview

Interface for parsing lines in the HEAD section of an HTTP message. There are individual methods for parsing a request line, a status line, or a header line. The lines to parse are passed in memory, the parser does not depend on any specific IO mechanism. Instances of this interface are expected to be stateless and thread-safe.

Summary

Public Methods
abstract boolean hasProtocolVersion(CharArrayBuffer buffer, ParserCursor cursor)
Checks whether there likely is a protocol version in a line.
abstract Header parseHeader(CharArrayBuffer buffer)
Creates a header from a line.
abstract ProtocolVersion parseProtocolVersion(CharArrayBuffer buffer, ParserCursor cursor)
Parses the textual representation of a protocol version.
abstract RequestLine parseRequestLine(CharArrayBuffer buffer, ParserCursor cursor)
Parses a request line.
abstract StatusLine parseStatusLine(CharArrayBuffer buffer, ParserCursor cursor)
Parses a status line.

Public Methods

public abstract boolean hasProtocolVersion (CharArrayBuffer buffer, ParserCursor cursor)

Checks whether there likely is a protocol version in a line. This method implements a heuristic to check for a likely protocol version specification. It does not guarantee that parseProtocolVersion(CharArrayBuffer, ParserCursor) would not detect a parse error. This can be used to detect garbage lines before a request or status line.

Parameters
buffer a buffer holding the line to inspect
cursor the cursor at which to check for a protocol version, or negative for "end of line". Whether the check tolerates whitespace before or after the protocol version is implementation dependent.
Returns
  • true if there is a protocol version at the argument index (possibly ignoring whitespace), false otherwise

public abstract Header parseHeader (CharArrayBuffer buffer)

Creates a header from a line. The full header line is expected here. Header continuation lines must be joined by the caller before invoking this method.

Parameters
buffer a buffer holding the full header line. This buffer MUST NOT be re-used afterwards, since the returned object may reference the contents later.
Returns
  • the header in the argument buffer. The returned object MAY be a wrapper for the argument buffer. The argument buffer MUST NOT be re-used or changed afterwards.
Throws
ParseException in case of a parse error

public abstract ProtocolVersion parseProtocolVersion (CharArrayBuffer buffer, ParserCursor cursor)

Parses the textual representation of a protocol version. This is needed for parsing request lines (last element) as well as status lines (first element).

Parameters
buffer a buffer holding the protocol version to parse
cursor the parser cursor containing the current position and the bounds within the buffer for the parsing operation
Returns
  • the parsed protocol version
Throws
ParseException in case of a parse error

public abstract RequestLine parseRequestLine (CharArrayBuffer buffer, ParserCursor cursor)

Parses a request line.

Parameters
buffer a buffer holding the line to parse
cursor the parser cursor containing the current position and the bounds within the buffer for the parsing operation
Returns
  • the parsed request line
Throws
ParseException in case of a parse error

public abstract StatusLine parseStatusLine (CharArrayBuffer buffer, ParserCursor cursor)

Parses a status line.

Parameters
buffer a buffer holding the line to parse
cursor the parser cursor containing the current position and the bounds within the buffer for the parsing operation
Returns
  • the parsed status line
Throws
ParseException in case of a parse error