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import 'dart:io';
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import 'parse_arguments.dart';
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import 'path_utils.dart';
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String mode;
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List<String> flavors;
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Args args;
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enum STATE {
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none,
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notMatch,
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caching,
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cached,
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replace,
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}
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void main(List<String> arguments) {
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print("Running default pre_script.");
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args = parse(arguments);
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var rootDir = Directory('./');
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rootDir.listSync().forEach(walkPath);
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}
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File file;
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StringBuffer sb = StringBuffer();
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StringBuffer tmp = StringBuffer();
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STATE state = STATE.none;
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RegExp re = RegExp(r'// #\[(debug|release)?(?:\[(.*)\])?\]');
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RegExp pathRe = RegExp(r'\[(debug|release)?(?:\[(.*)\])?\]');
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Match ma;
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void walkPath(FileSystemEntity path) {
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var stat = path.statSync();
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if (stat.type == FileSystemEntityType.directory) {
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Directory(path.path).listSync().forEach(walkPath);
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} else if (stat.type == FileSystemEntityType.file) {
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ma = pathRe.firstMatch(PathUtils.baseName(path));
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if (ma != null) {
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mode = ma.group(1);
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flavors = (ma.group(2) ?? '').split(' ').where((ele) => ele.trim() != '').toList();
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if (checkModeAndFlavors()) {
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var defaultFilePath = path.path.replaceFirst(ma.group(0), '');
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var defaultFile = File(defaultFilePath);
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if (defaultFile.existsSync()) {
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defaultFile.renameSync(defaultFilePath + '.default');
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}
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File(path.path).copySync(defaultFilePath);
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}
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return;
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}
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// 文件名不带规则，逐行读取后进行处理
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file = File(path.path);
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sb.clear();
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try {
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file.readAsLinesSync().forEach((line) {
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ma = re.firstMatch(line);
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if (ma != null) {
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mode = ma.group(1);
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flavors = (ma.group(2) ?? '').split(' ').where((ele) => ele.trim() != '').toList();
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// 默认的代码块
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if (mode == null && flavors.length == 0) {
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// 前一状态为replace，此时应该将缓存内容写入替换区域，并将状态复位为none
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if (state == STATE.replace) {
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sb.write(tmp);
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state = STATE.none;
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}
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// 前一状态为缓存中或缓存结束，此时应该将状态改为替换，用于跳过默认内容
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else if (state == STATE.caching || state == STATE.cached) {
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state = STATE.replace;
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}
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} else {
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// 带有条件的替换代码块
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if (state == STATE.caching) {
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// 此时状态为缓存中，将状态改为已缓存
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state = STATE.cached;
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} else if (state == STATE.none || state == STATE.notMatch) {
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// 此时状态为none或者未匹配，需要进行匹配判断
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if (checkModeAndFlavors()) {
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state = STATE.caching;
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tmp.clear();
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} else {
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state = STATE.notMatch;
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}
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}
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}
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} else {
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// none状态时直接将line写入sb
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if (state == STATE.none)
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sb.writeln(line);
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// 缓存中状态，将用于替换的内容移除注释后写入缓存
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else if (state == STATE.caching) tmp.writeln(line.replaceFirst('// ', ''));
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// 这样就跳过了没有匹配上的替换代码块和默认内容
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}
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});
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file.renameSync(path.path + '.bak');
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File(path.path).writeAsStringSync(sb.toString(), flush: true);
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} catch (e) {
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if (!(e is FileSystemException)) {
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rethrow;
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}
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}
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}
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}
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bool checkModeAndFlavors() {
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if (mode != null && mode != args.mode) {
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return false;
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}
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if (flavors.isEmpty) return true;
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if (flavors[0].startsWith('!')) {
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return !flavors.map((e) => e.replaceFirst('!', '')).toList().contains(args.flavor);
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} else {
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return flavors.contains(args.flavor);
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}
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}
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