forked from lxm_flutter/json2dart
138 lines
4.0 KiB
Dart
138 lines
4.0 KiB
Dart
import 'dart:convert';
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import 'package:json2dart_serialization/json_generator.dart';
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import 'package:json2dart_serialization/template.dart';
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class Generator {
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String jsonString;
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String entityName;
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Version version;
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Generator(this.jsonString, [this.entityName, this.version = Version.v0]) {
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this.jsonString = convertJsonString(jsonString);
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}
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List<DefaultTemplate> templateList = [];
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void refreshAllTemplates() {
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var entityName = this.entityName ?? "Entity";
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DefaultTemplate template;
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if (version == Version.v1) {
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template = V1Template(srcJson: jsonString, className: entityName);
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} else {
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template = DefaultTemplate(srcJson: jsonString, className: entityName);
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}
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if (!template.isList) {
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templateList.add(template);
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refreshTemplate(template);
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// return resultSb.toString();
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} else {
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var listTemplate = template.getListTemplate();
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templateList.add(listTemplate);
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refreshTemplate(template);
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}
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}
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String makeDartCode() {
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StringBuffer resultSb = StringBuffer();
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handleInputClassName();
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resultSb.writeln(header);
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templateList.forEach((template) {
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resultSb.writeln(template.toString());
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});
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return resultSb.toString();
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}
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void handleInputClassName() {
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final text = eClassName.value;
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final lines = text.split("\n");
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for (var i = 0; i < templateList.length; i++) {
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final template = templateList[i];
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final line = lines[i].trim();
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final inputKeyValue = line.split(":");
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final inputName = inputKeyValue[1];
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template.className = inputName;
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print("设置 template class name 为 $inputName");
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}
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}
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void refreshTemplate(DefaultTemplate template) {
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var fieldList = template.fieldList;
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fieldList.forEach((filed) {
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if (filed is MapField) {
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DefaultTemplate template = DefaultTemplate(
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srcJson: json.encode(filed.map), className: filed.typeString);
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if (version == Version.v1) {
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template = V1Template(
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srcJson: json.encode(filed.map), className: filed.typeString);
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}
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templateList.add(template);
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refreshTemplate(template);
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} else if (filed is ListField) {
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if (filed.childIsObject) {
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DefaultTemplate template = DefaultTemplate(
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srcJson: json.encode(filed.list[0]), className: filed.typeName);
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if (version == Version.v1) {
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template = V1Template(
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srcJson: json.encode(filed.list[0]), className: filed.typeName);
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}
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templateList.add(template);
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refreshTemplate(template);
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}
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}
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});
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}
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String get fileName => camelCase2UnderScoreCase(entityName);
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static const String importString =
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"import 'package:json_annotation/json_annotation.dart';";
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String get header => """$importString
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part '$fileName.g.dart';
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""";
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String getClassNameText() {
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final sb = StringBuffer();
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for (final template in templateList) {
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String text = "${template.className} : ${template.className}";
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sb.writeln(text);
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}
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return sb.toString();
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}
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}
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String camelCase2UnderScoreCase(String name) {
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return name[0].toLowerCase() +
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name.substring(1).replaceAllMapped(RegExp("[A-Z]"), (match) {
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var str = match.group(0);
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return "_" + str.toLowerCase();
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});
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}
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/// use the string replace's method the resolve the int and double problem.
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String convertJsonString(String jsonString) {
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var numberReg = RegExp(r"[0-9]\.[0-9]+");
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//匹配小数数字正则
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var allMatch = numberReg.allMatches(jsonString).toList();
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for (var i = 0; i < allMatch.length; i++) {
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//是一个小数数字
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var m = allMatch[i];
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var s = m.group(0);
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// 应该是double，但由于js的原因被识别成了整数数，这里对这种数据进行处理，将这里的最后一位从0替换为5，以便于让该被js识别成小数 而非数字
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s = s.replaceRange(s.length - 1, s.length, "5");
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jsonString = jsonString.replaceRange(m.start, m.end, s);
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}
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return jsonString;
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}
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