- http
- http
- http_unix_daemon.pl
- thread_httpd.pl -- Threaded HTTP server
- http_wrapper.pl -- Server processing of an HTTP request
- http_header.pl -- Handling HTTP headers
- http_stream.pl -- HTTP Streams
- http_exception.pl
- http_path.pl
- http_dispatch.pl -- Dispatch requests in the HTTP server
- http_host.pl
- http_parameters.pl -- Extract parameters (GET and POST) from HTTP requests
- http_client.pl -- HTTP client library
- http_multipart_plugin.pl -- Multipart form-data plugin
- http_hook.pl -- HTTP library hooks
- html_write.pl -- Write HTML text
- html_quasiquotations.pl -- HTML quasi quotations
- mimetype.pl -- Determine mime-type for a file
- html_head.pl -- Automatic inclusion of CSS and scripts links
- http_server_files.pl -- Serve files needed by modules from the server
- term_html.pl -- Represent Prolog terms as HTML
- json.pl -- Reading and writing JSON serialization
- http_open.pl -- HTTP client library
- http_session.pl -- HTTP Session management
- http_openid.pl -- OpenID consumer and server library
- yadis.pl -- Yadis discovery
- ax.pl -- Attribute Exchange library
- http_authenticate.pl -- Authenticate HTTP connections using 401 headers
- http_json.pl -- HTTP JSON Plugin module
- http_dirindex.pl -- HTTP directory listings
- js_write.pl -- Utilities for including JavaScript
- js_grammar.pl -- JavaScript grammar
- http_cors.pl -- Enable CORS: Cross-Origin Resource Sharing
- json_convert.pl -- Convert between JSON terms and Prolog application terms
- http_server.pl -- HTTP server library
- http_dyn_workers.pl -- Dynamically schedule HTTP workers.
- http_server_health.pl -- HTTP Server health statistics
- hub.pl -- Manage a hub for websockets
- websocket.pl -- WebSocket support
- http_log.pl -- HTTP Logging module
- mimepack.pl -- Create a MIME message
- http
- json_write(+Stream, +Term) is det
- json_write(+Stream, +Term, +Options) is det
- Write a JSON term to Stream. The JSON object is of the same format
as produced by json_read/2, though we allow for some more
flexibility with regard to pairs in objects. All of Name=Value,
Name-Value and Name(Value) produce the same output.
Values can be of the form #(Term), which causes Term to be stringified if it is not an atom or string. Stringification is based on term_string/2.
Rational numbers are emitted as floating point numbers. The hook json_write_hook/4 can be used to realize domain specific alternatives.
The version 7 dict type is supported as well. Optionally, if the dict has a tag, a property "type":"tag" can be added to the object. This behaviour can be controlled using the
tag
option (see below). For example:?- json_write(current_output, point{x:1,y:2}). { "x":1, "y":2 }
?- json_write(current_output, point{x:1,y:2}, [tag(type)]). { "type":"point", "x":1, "y":2 }
In addition to the options recognised by json_read/3, we process the following options are recognised:
- width(+Width)
- Width in which we try to format the result. Too long lines switch from horizontal to vertical layout for better readability. If performance is critical and human readability is not an issue use Width = 0, which causes a single-line output.
- step(+Step)
- Indentation increnment for next level. Default is 2.
- tab(+TabDistance)
- Distance between tab-stops. If equal to Step, layout is generated with one tab per level.
- serialize_unknown(+Boolean)
- If
true
(defaultfalse
), serialize unknown terms and print them as a JSON string. The default raises a type error. Note that this option only makes sense if you can guarantee that the passed value is not an otherwise valid Prolog reporesentation of a Prolog term.
If a string is emitted, the sequence
</
is emitted as<\/
. This is valid JSON syntax which ensures that JSON objects can be safely embedded into an HTML<script>
element.