Module: JSONExtractor

Defined in:

lib/json_extractor.rb,
ext/json_extractor/json_extractor.c

Class Method Summary

• .extract_subdocument(str, key) ⇒ Object
• .subdocument(filename, key) ⇒ Object

Class Method Details

.extract_subdocument(str, key) ⇒ Object

# File 'ext/json_extractor/json_extractor.c', line 242

static VALUE rb_extract_subdocument(VALUE self, VALUE str, VALUE key) {
  char *data, *substr;
  VALUE result;

  // No str?
  if(str == Qnil) {
    return Qnil;
  }

  // No key?
  if(key == Qnil) {
    return Qnil;
  }

  // If str points to a file, let's read it and use that. Otherwise...
  if(file_exists(RSTRING_PTR(str))) {
    data = read_all(RSTRING_PTR(str));
    substr = extract_subdocument(data, RSTRING_PTR(key));
    free(data);
  } else {
    substr = extract_subdocument(RSTRING_PTR(str), RSTRING_PTR(key));
  }

  if(substr == NULL) {
    return Qnil;
  }

  result = rb_str_new2(substr);

  // TODO: Figure out if this is right. It behaves properly, so I'm assuming
  // it's OK.
  free(substr);

  return result;
}

.subdocument(filename, key) ⇒ Object

# File 'lib/json_extractor.rb', line 6

def self.subdocument(filename, key)
  JSON.parse(extract_subdocument(filename, key))
end