基于其他JSON数据创建JSON文件树格式

Question

我想在其他JSON的基础上用JSON创建一个文件树格式。其想法是将JSON数据重新组织为树格式。

请注意，文件的名称指示它在树中的位置。

假设我们有第一个JSON:

{
"dir1/file3.xyz":
[
18KB,
"2020-01-01 00:00:00"
],
"dir1/file4.xyz":
[
18KB,
"2020-01-02 00:00:00"
],
"dir1/subdir1/file5.xyz":
[
18KB,
"2020-01-01 00:00:00"
],
"dir1/subdir1/file6.xyz":
[
18KB,
"2020-01-02 00:00:00"
],
"file1.xyz":
[
18KB,
"2020-01-01 00:00:00"
],
"file2.xyz":
[
18KB,
"2020-01-02 00:00:00"
]
}

我想在前面的基础上创建一个JSON，格式如下：

[
directories: [
{
name: 'dir1',
directories: [
{
name: 'subdir1',
directories: [],
files: [
{
name: 'file5.xyz',
size: '19KB',
modified: '2020-01-01 00:00:00'
},
{
name: 'file6.xyz',
size: '20KB',
modified: '2020-01-02 00:00:00'
}
]
}
],
files: [
{
name: 'file3.xyz',
size: '19KB',
modified: '2020-01-01 00:00:00'
},
{
name: 'file4.xyz',
size: '20KB',
modified: '2020-01-02 00:00:00'
}
]
}
],
files: [
{
name: 'file1.xyz',
size: '19KB',
modified: '2020-01-01 00:00:00'
},
{
name: 'file2.xyz',
size: '20KB',
modified: '2020-01-02 00:00:00'
}
]

谢谢你抽出时间。

Answer 1

我们使用以下JavaScript代码逻辑解决了这一挑战：

function fillWithZero(intValue){
return intValue > 9 ? intValue : '0' + intValue;
}
function list_to_tree(list) {
var map = {}, i;
var root = {};
root.text = '/';
root.value = '';
root.disabled = true;
root.children = [];
map['/'] = root;
for (i = 0; i < list.length; i += 1) {
node = list[i];
var current = {};
var d = node.date;
var datestring = fillWithZero(d.getDate()) + "-" + fillWithZero(d.getMonth()+1) + "-" + d.getFullYear() + " " + fillWithZero(d.getHours()) + ":" + fillWithZero(d.getMinutes()) + ":" + fillWithZero(d.getSeconds());
current.text = node.name + ' - Size: ' + parseInt(node.size/1024) + 'KB' + ' Modified: ' + datestring;
current.value = node.name;
var parent = root;
if (node.name.indexOf('/') > 0) {
var paths = node.name.split('/');
for (j = 0; j < paths.length - 1; j += 1) {
var dirId = paths[j];
var dir = map[dirId];
if (dir == null) {
dir = {};
dir.text = dirId;
dir.value = dirId;
if(parent != root){
dir.value = parent.value + '/' + dirId;
}
dir.disabled = true;
dir.children = [];
map[dirId] = dir;                   
parent.children.push(dir);
}
parent = dir;
}
current.text = node.name.substr(node.name.lastIndexOf('/') + 1, node.name.length) + ' - Size: ' + parseInt(node.size/1024) + 'KB' + ' Modified: ' + datestring;
}
parent.children.push(current);
}
return root;
}
var entries = [{
"name": "dir1/file1.xyz",
"size": 4234,
"date": new Date()
}, {
"name": "dir1/file2.xyz",
"size": 4234,
"date": new Date()
}, {
"name": "dir1/subdir1/file3.xyz",
"size": 4234,
"date": new Date()
}, {
"name": "dir1/subdir1/file4.xyz",
"size": 4234,
"date": new Date()
}, {
"name": "file3.xyz",
"size": 4234,
"date": new Date()
}, {
"name": "file4.xyz",
"size": 4234,
"date": new Date()
}
];
console.log(list_to_tree(entries));