platform/common/body_parser/lib/src/map_from_uri.dart

44 lines
1.4 KiB
Dart

import 'get_value.dart';
/// Parses a URI-encoded string into real data! **Wow!**
///
/// Whichever map you provide will be automatically populated from the urlencoded body string you provide.
void buildMapFromUri(Map map, String body) {
var parseArrayRgx = RegExp(r'^(.+)\[\]$');
for (var keyValuePair in body.split('&')) {
if (keyValuePair.contains('=')) {
var equals = keyValuePair.indexOf('=');
var key = Uri.decodeQueryComponent(keyValuePair.substring(0, equals));
var value = Uri.decodeQueryComponent(keyValuePair.substring(equals + 1));
if (parseArrayRgx.hasMatch(key)) {
Match queryMatch = parseArrayRgx.firstMatch(key)!;
key = queryMatch.group(1)!;
if (map[key] is! List) {
map[key] = [];
}
map[key].add(getValue(value));
} else if (key.contains('.')) {
// i.e. map.foo.bar => [map, foo, bar]
var keys = key.split('.');
var targetMap = map[keys[0]] != null ? map[keys[0]] as Map? : {};
map[keys[0]] = targetMap;
for (var i = 1; i < keys.length; i++) {
if (i < keys.length - 1) {
targetMap![keys[i]] = targetMap[keys[i]] ?? {};
targetMap = targetMap[keys[i]] as Map?;
} else {
targetMap![keys[i]] = getValue(value);
}
}
} else {
map[key] = getValue(value);
}
} else {
map[Uri.decodeQueryComponent(keyValuePair)] = true;
}
}
}