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enableYAMLCompatibility and dropNullPlaceholders for StreamWriterBuilder

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This commit is contained in:
Christopher Dunn 2015-02-10 21:15:43 -06:00
parent 07f0e9308d
commit 5a744708fc
2 changed files with 20 additions and 2 deletions
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9
include/json/writer.h
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@ -90,8 +90,15 @@ public:
// without a major version bump.
/** Configuration of this builder.
Available settings (case-sensitive):
- "commentStyle": "None", "Some", or "All"
- "commentStyle": "None" or "All"
- "indentation": "<anything>"
- "enableYAMLCompatibility": False or True
- slightly change the whitespace around colons
- "dropNullPlaceholders": False or True
- Drop the "null" string from the writer's output for nullValues.
Strictly speaking, this is not valid JSON. But when the output is being
fed to a browser's Javascript, it makes for smaller output and the
browser can handle the output just fine.
You can examine 'settings_` yourself
to see the defaults. You can also write and read them just like any

13
src/lib_json/json_writer.cpp
View File

@ -973,6 +973,8 @@ StreamWriter* StreamWriterBuilder::newStreamWriter() const
std::string indentation = settings_["indentation"].asString();
std::string cs_str = settings_["commentStyle"].asString();
bool eyc = settings_["enableYAMLCompatibility"].asBool();
bool dnp = settings_["dropNullPlaceholders"].asBool();
CommentStyle::Enum cs = CommentStyle::All;
if (cs_str == "All") {
cs = CommentStyle::All;
@ -982,10 +984,15 @@ StreamWriter* StreamWriterBuilder::newStreamWriter() const
return NULL;
}
std::string colonSymbol = " : ";
if (indentation.empty()) {
if (eyc) {
colonSymbol = ": ";
} else if (indentation.empty()) {
colonSymbol = ":";
}
std::string nullSymbol = "null";
if (dnp) {
nullSymbol = "";
}
std::string endingLineFeedSymbol = "";
return new BuiltStyledStreamWriter(
indentation, cs,
@ -996,6 +1003,8 @@ static void getValidWriterKeys(std::set<std::string>* valid_keys)
valid_keys->clear();
valid_keys->insert("indentation");
valid_keys->insert("commentStyle");
valid_keys->insert("enableYAMLCompatibility");
valid_keys->insert("dropNullPlaceholders");
}
bool StreamWriterBuilder::validate(Json::Value* invalid) const
{
@ -1021,6 +1030,8 @@ void StreamWriterBuilder::setDefaults(Json::Value* settings)
//! [StreamWriterBuilderDefaults]
(*settings)["commentStyle"] = "All";
(*settings)["indentation"] = "\t";
(*settings)["enableYAMLCompatibility"] = false;
(*settings)["dropNullPlaceholders"] = false;
//! [StreamWriterBuilderDefaults]
}