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my and your, since someone found this confusing

Christopher Dunn 2015-02-22 00:56:23 -06:00
parent 740effe392
commit 0b9eba1d8f
1 changed files with 20 additions and 18 deletions
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Home.md

@ -5,13 +5,13 @@ JSON (JavaScript Object Notation) is a lightweight data-interchange format. It c
Here is an example of JSON data:
```js
{
"encoding" : "UTF-8",
"plug-ins" : [
"my-encoding" : "UTF-8",
"my-plug-ins" : [
"python",
"c++",
"ruby"
],
"indent" : { "length" : 3, "use_space": true }
"my-indent" : { "length": 3, "use_space": true }
}
```
And here it is with ***comments***:
@ -19,17 +19,17 @@ And here it is with ***comments***:
// Configuration options
{
// Default encoding for text
"encoding" : "UTF-8",
"my-encoding" : "UTF-8",
// Plug-ins loaded at start-up
"plug-ins" : [
"my-plug-ins" : [
"python",
"c++",
"ruby"
],
// Tab indent size
"indent" : { "length" : 3, "use_space": true }
"my-indent" : { "length" : 3, "use_space": true }
}
```
Features of *jsoncpp*
@ -46,25 +46,26 @@ Code example
Json::Value root; // starts as "null"; will contain the root value after parsing
std::cin >> root;
// Get the value of the member of root named 'encoding', return 'UTF-8' if there is no
// Get the value of the member of root named 'my-encoding', return 'UTF-32' if there is no
// such member.
std::string encoding = root.get("encoding", "UTF-8" ).asString();
// Get the value of the member of root named 'plug-ins', return a 'null' value if
std::string my_encoding = root.get("my-encoding", "UTF-32" ).asString();
// Get the value of the member of root named 'my-plug-ins'; 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() );
const Json::Value my_plugins = root["my-plug-ins"];
for ( int index = 0; index < my_plugins.size(); ++index ) // Iterates over the sequence elements.
yourib::loadPlugIn( my_plugins[index].asString() );
yourlib::setIndentLength( root["my-indent"].get("length", 3).asInt() );
yourlib::setIndentUseSpace( root["my-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 explicitly construct the Json::Value object:
root["encoding"] = getCurrentEncoding();
root["indent"]["length"] = getCurrentIndentLength();
root["indent"]["use_space"] = getCurrentIndentUseSpace();
root["encoding"] = yourlib::getCurrentEncoding();
root["indent"]["length"] = yourlib::getCurrentIndentLength();
root["indent"]["use_space"] = yourlib::getCurrentIndentUseSpace();
// Make a new JSON document with the new configuration. Preserve original comments.
std::cout << root << "\n";
@ -75,6 +76,7 @@ You can also read from a file, e.g.:
#include <fstream>
std::ifstream config_doc("config_doc.json", std::ifstream::binary);
config_doc >> root;
```
If you need some unusual features, use *Builders*: