openvrml::doc2 Class Reference

List of all members.


Detailed Description

A class to contain document references.

doc2 is a hack of doc. When the ANTLR parser was added to OpenVRML, a doc work-alike was needed that would read from a std::istream instead of a C FILE *. doc2's purpose is to fill that need, and to remind us through its ugliness just how badly both it and doc need to be replaced with an I/O solution that doesn't suck.


Public Member Functions

 doc2 (const std::string &url=std::string(), const doc2 *relative=0)
 Constructor.
 ~doc2 ()
 Destructor.
void seturl (const std::string &url, const doc2 *relative=0)
 Set the URL.
const std::string url () const
 Get the URL.
const std::string url_base () const
 Get the portion of the path likely to correspond to a file name without its extension.
const std::string url_ext () const
 Get the portion of the path likely to correspond to a file name extension.
const std::string url_path () const
 Get the URL without the last component of the path.
const std::string url_protocol () const
 Get the URL scheme.
const std::string url_modifier () const
 Get the fragment identifier.
const char * local_name ()
 Get the fully qualified name of a local file that is the downloaded resource at url_.
const char * local_path ()
 Get the path of the local file that is the downloaded resource at url_.
std::istream & input_stream ()
 Get an input stream for the resource.
std::ostream & output_stream ()
 Get an output stream for the resource.

Private Member Functions

bool filename (char *fn, size_t nfn)
 Converts a url into a local filename.

Private Attributes

std::string url_
 The URL.
char * tmpfile_
 Name of the temporary file created for the local copy of the resource.
std::istream * istm_
 A file descriptor for reading the local copy of the resource.
std::ostream * ostm_
 A pointer to a std::ostream used for writing the resource.

Constructor & Destructor Documentation

openvrml::doc2::doc2 ( const std::string &  url = std::string(),
const doc2 relative = 0 
) [explicit]

Constructor.

Parameters:
url an HTTP or file URL.
relative the doc2 that url is relative to, or 0 if url is an absolute URL.

openvrml::doc2::~doc2 (  ) 

Destructor.


Member Function Documentation

void openvrml::doc2::seturl ( const std::string &  url,
const doc2 relative = 0 
)

Set the URL.

Parameters:
url the new URL.
relative the doc2 that url is relative to, or 0 if url is an absolute URL.

const std::string openvrml::doc2::url (  )  const

Get the URL.

Returns:
the URL.

const std::string openvrml::doc2::url_base (  )  const

Get the portion of the path likely to correspond to a file name without its extension.

Returns:
the portion of the last path element preceding the last '.' in the path, or an empty string if the last path element is empty.

const std::string openvrml::doc2::url_ext (  )  const

Get the portion of the path likely to correspond to a file name extension.

Returns:
the portion of the last path element succeeding the last '.' in the path, or an empty string if the last path element includes no '.'.

const std::string openvrml::doc2::url_path (  )  const

Get the URL without the last component of the path.

In spite of its name, this method does not return the URL's path.

Returns:
the portion of the URL including the scheme, the authority, and all but the last component of the path.

const std::string openvrml::doc2::url_protocol (  )  const

Get the URL scheme.

Returns:
the URL scheme.

const std::string openvrml::doc2::url_modifier (  )  const

Get the fragment identifier.

Returns:
the fragment identifier, including the leading '#', or an empty string if there is no fragment identifier.

const char * openvrml::doc2::local_name (  ) 

Get the fully qualified name of a local file that is the downloaded resource at url_.

Returns:
the fully qualified name of a local file that is the downloaded resource at url_.

const char * openvrml::doc2::local_path (  ) 

Get the path of the local file that is the downloaded resource at url_.

Returns:
the path of the local file that is the downloaded resource at url_.

std::istream & openvrml::doc2::input_stream (  ) 

Get an input stream for the resource.

Returns:
an input stream for the resource.

std::ostream & openvrml::doc2::output_stream (  ) 

Get an output stream for the resource.

Returns:
an output stream for the resource.

bool openvrml::doc2::filename ( char *  fn,
size_t  nfn 
) [private]

Converts a url into a local filename.

Return values:
fn a character buffer to hold the local filename.
Parameters:
nfn the number of elements in the buffer fn points to.


Member Data Documentation

char * openvrml::doc2::url_ [private]

The URL.

char * openvrml::doc2::tmpfile_ [private]

Name of the temporary file created for the local copy of the resource.

std::istream * openvrml::doc2::istm_ [private]

A file descriptor for reading the local copy of the resource.

std::ostream * openvrml::doc2::ostm_ [private]

A pointer to a std::ostream used for writing the resource.