diff options
Diffstat (limited to 'lib/jsoncpp/doc/jsoncpp.dox')
-rw-r--r-- | lib/jsoncpp/doc/jsoncpp.dox | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/lib/jsoncpp/doc/jsoncpp.dox b/lib/jsoncpp/doc/jsoncpp.dox new file mode 100644 index 0000000000..fc7b530eba --- /dev/null +++ b/lib/jsoncpp/doc/jsoncpp.dox @@ -0,0 +1,97 @@ +/** +\mainpage +\section _intro Introduction + +<a HREF="http://www.json.org/">JSON (JavaScript Object Notation)</a> + is a lightweight data-interchange format. +It can represents integer, real number, string, an ordered sequence of value, and +a collection of name/value pairs. + +Here is an example of JSON data: +\verbatim +// Configuration options +{ + // Default encoding for text + "encoding" : "UTF-8", + + // Plug-ins loaded at start-up + "plug-ins" : [ + "python", + "c++", + "ruby" + ], + + // Tab indent size + "indent" : { "length" : 3, "use_space" = true } +} +\endverbatim + +\section _features Features +- read and write JSON document +- rewrite JSON document preserving original comments + +\code +Json::Value root; // will contains the root value after parsing. +Json::Reader reader; +bool parsingSuccessful = reader.parse( config_doc, root ); +if ( !parsingSuccessful ) +{ + // report to the user the failure and their locations in the document. + std::cout << "Failed to parse configuration\n" + << reader.getFormatedErrorMessages(); + return; +} + +// Get the value of the member of root named 'encoding', return 'UTF-8' if there is no +// such member. +std::string encoding = root.get("encoding", "UTF-8" ).asString(); +// Get the value of the member of root named 'encoding', return a 'null' value if +// there is no such member. +const Json::Value plugins = root["plug-ins"]; +for ( int index = 0; index < plugins.size(); ++index ) // Iterates over the sequence elements. + loadPlugIn( plugins[index].asString() ); + +setIndentLength( root["indent"].get("length", 3).asInt() ); +setIndentUseSpace( root["indent"].get("use_space", true).asBool() ); + +// ... +// At application shutdown to make the new configuration document: +// Since Json::Value has implicit constructor for all value types, it is not +// necessary to explicitely construct the Json::Value object: +root["encoding"] = getCurrentEncoding(); +root["indent"]["length"] = getCurrentIndentLength(); +root["indent"]["use_space"] = getCurrentIndentUseSpace(); + +Json::StyledWriter writer; +// Make a new JSON document for the configuration. Preserve original comments. +std::string outputConfig = writer.write( root ); + +// You can also use streams. This will put the contents of any JSON +// stream at a particular sub-value, if you'd like. +std::cin >> root["subtree"]; + +// And you can write to a stream, using the StyledWriter automatically. +std::cout << root; +\endcode + +\section _plinks Build instructions +The build instruction are located in the file +<a HREF="README.txt">README.txt</a> in the top-directory of the project. + +Permanent link to the lastest revision of the file in subversion: +<a HREF="http://svn.sourceforge.net/viewcvs.cgi/jsoncpp/README.txt?view=markup">lastest README.txt</a> + +\section _plinks Project links +- <a HREF="http://jsoncpp.sourceforge.net">json-cpp home</a> +- <a HREF="http://www.sourceforge.net/projects/jsoncpp">json-cpp sourceforge project</a> + +\section _rlinks Related links +- <a HREF="http://www.json.org/">JSON</a> Specification and alternate language implementations. +- <a HREF="http://www.yaml.org/">YAML</a> A data format designed for human readability. +- <a HREF="http://www.cl.cam.ac.uk/~mgk25/unicode.html">UTF-8 and Unicode FAQ</a>. + +\section _license License +The json-cpp library and this documentation are in Public Domain. + +\author Baptiste Lepilleur <blep@users.sourceforge.net> +*/ |