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73 lines
2.6 KiB
JavaScript
73 lines
2.6 KiB
JavaScript
onmessage = function (e) {
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var request = e.data;
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var result_files = {};
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result_files.delete_list = [];
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result_files.update_list = [];
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switch (request.command) {
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case 'compare':
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compare_file_info(request.local_file_info, request.remote_file_info, result_files);
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send_command('delete', result_files.delete_list);
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send_command('update', result_files.update_list);
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send_command('finish', []);
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break;
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case 'finish':
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send_command('finish');
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break;
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}
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}
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function compare_file_info(local_file_info, remote_file_info, result_files) {
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if (!remote_file_info) {
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result_files.delete_list = result_files.delete_list.concat(generate_file_list(local_file_info));
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} else if (!local_file_info) {
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result_files.update_list = result_files.update_list.concat(generate_file_list(remote_file_info));
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} else if (local_file_info.is_dir !== remote_file_info.is_dir) {
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result_files.delete_list = result_files.delete_list.concat(generate_file_list(local_file_info));
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result_files.update_list = result_files.update_list.concat(generate_file_list(remote_file_info));
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} else if (local_file_info.sha_512 !== remote_file_info.sha_512) {
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if (local_file_info.is_dir) {
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var visited_children = new Set();
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for (var i in local_file_info.children) {
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compare_file_info(local_file_info.children[i], remote_file_info.children[i], result_files);
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visited_children.add(i);
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}
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for (var i in remote_file_info.children) {
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if (!visited_children.has(i)) {
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result_files.update_list = result_files.update_list.concat(generate_file_list(remote_file_info.children[i]));
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}
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}
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} else {
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result_files.update_list = result_files.update_list.concat(generate_file_list(remote_file_info));
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}
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}
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}
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function generate_file_list(file_info) {
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if (!file_info) { return []; }
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var file_list = [];
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if (file_info.is_dir) {
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for (var i in file_info.children) {
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file_list = file_list.concat(generate_file_list(file_info.children[i]));
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}
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}
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file_list.push({
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"file_name": file_info.file_name,
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"is_dir": file_info.is_dir,
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"is_file": file_info.is_file,
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"sha_512": file_info.sha_512
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});
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return file_list;
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}
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// command: delete, update, finish
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function send_command(command, file_list) {
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var command_data = {
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command: command,
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file_list: file_list
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};
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postMessage(command_data);
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} |