Xml.php
7.9 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
<?php
/**
*返回码定义
*/
/* 扩展内部错误 */
define("INTERNAL_ERR", -1);
/* 当前模式下不允许执行该函数 */
define("WRONG_MODE", 0);
/* 成功 */
define("SUCESS", 1);
/**
* 模式定义
*/
define("READMODE", 0);
define("WRITEMODE", 1);
/**
* @desc LtXml用于解析和生成XML文件
* 使用前调用 init() 方法对类进行初始化
*
* LtXml提供两个公共方法 getArray() 和 getString
*
* getArray() 方法要求传入一个规范的xml字符串,
* 返回一个格式化的数组
*
* getString() 方法要求传入一个格式化的数组,反
* 回一个规范的xml字符串
* 在使用getString() 方法时,传入的格式化数组可
* 通过 createTag() 方法获得。
*
*/
class LtXml {
/**
* 只支持 ISO-8859-1, UTF-8 和 US-ASCII三种编码
*/
private $_supportedEncoding = array("ISO-8859-1", "UTF-8", "US-ASCII");
/**
* XMLParser 操作句柄
*/
private $_handler;
/**
* READMODE 0:读模式,encoding参数不生效,通过输入的string获取version和encoding(getString方法不可用)
* WRITEMODE 1:写模式,按照制定的encoding和array生成string(getArray方法不可用)
*/
public $mode;
/**
* 该 XML 对象的编码,ISO-8859-1, UTF-8(默认) 或 US-ASCII
*/
public $encoding;
/**
* 该 XML 对象的版本,1.0(默认)
*/
public $version;
public function init($mode = 0, $encoding = "UTF-8", $version = "1.0") {
$this->mode = $mode;
$this->encoding = $encoding;
$this->version = $version;
$this->_getParser($encoding);
}
public function getArray($xmlString) {
if (READMODE !== $this->mode) {
trigger_error("LtXml is on WRITEMODE, and cannot convert XML string to array.");
return WRONG_MODE;
}
if (0 === preg_match("/version=[\"|\']([1-9]\d*\.\d*)[\"|\']/", $xmlString, $res)) {
trigger_error("Cannot find the version in this XML document.");
return INTERNAL_ERR;
}
else {
$this->version = $res[1];
}
if (0 === preg_match("/encoding=[\"|\'](.*?)[\"|\']/", $xmlString, $res)) {
$this->encoding = "UTF-8";
}
else {
$this->encoding = strtoupper($res[1]);
}
$_array = $this->_stringToArray($xmlString);
if (NULL === $_array) {
trigger_error("Fail to get the tag template.");
return INTERNAL_ERR;
}
$currentArray = NULL;
$openingTags = array();
$array = $this->_getArrayTemplate();
foreach ($_array as $tag) {
$tag["tag"] = strtolower($tag["tag"]);
if (isset($tag["type"]) && "close" == $tag["type"]
&& isset($tag["tag"]) && ! empty($tag["tag"])) {
if ($openingTags[count($openingTags) - 1]["tag"] == $tag["tag"]) {
unset($openingTags[count($openingTags) - 1]);
}
else {
return -1;
}
}
else if ((isset($tag["type"]) && "complete" == $tag["type"])
|| (isset($tag["type"]) && "open" == $tag["type"])
&& isset($tag["tag"]) && ! empty($tag["tag"])){
$currentArray = $this->_getArrayTemplate();
$currentArray["tag"] = $tag["tag"];
$cdata = $tag["value"];
$cdata = preg_replace("/^\s*/", "", $cdata);
$cdata = preg_replace("/\s*$/", "", $cdata);
$currentArray["cdata"] = $cdata;
if (isset($tag["attributes"]) && is_array($tag["attributes"])) {
foreach($tag["attributes"] as $k => $v) {
$currentArray["attributes"][strtolower($k)] = $v;
}
}
if (0 == count($openingTags)) {
$openingTags[] = &$array;
$openingTags[0] = $currentArray;
}
else {
$subCount = count($openingTags[count($openingTags) - 1]["sub"]);
$openingTags[count($openingTags) - 1]["sub"][$subCount] = $currentArray;
$openingTags[count($openingTags)] = &$openingTags[count($openingTags) - 1]["sub"][$subCount];
}
if ("complete" == $tag["type"]) {
unset($openingTags[count($openingTags) - 1]);
}
}
else if (isset($tag["type"]) && "cdata" == $tag["type"]
&& isset($tag["tag"]) && ! empty($tag["tag"])) {
if ($tag["tag"] == $openingTags[count($openingTags) - 1]["tag"]) {
$cdata = $tag["value"];
$cdata = preg_replace("/^\s*/", "", $cdata);
$cdata = preg_replace("/\s*$/", "", $cdata);
$openingTags[count($openingTags) - 1]["cdata"] .= $cdata;
}
else {
return -2;
}
}
}
if (0 < count($openingTags)) {
return -3;
}
return $array;
}
public function getString($xmlArray) {
if (WRITEMODE !== $this->mode) {
trigger_error("LtXml is on READMODE, and cannot convert array to string.");
return WRONG_MODE;
}
$header = "<?xml version=\"{$this->version}\" encoding=\"{$this->encoding}\"". " ?" . ">\n";
$xmlString = $header;
$processingTags = array($xmlArray);
while (! empty($processingTags)) {
if (! isset($processingTags[count($processingTags) -1]["close"])) {
$tagArray = $processingTags[count($processingTags) - 1];
if (0 === $this->_isTag($tagArray)) {
trigger_error("The array do not match the format.");
return INTERNAL_ERR;
}
$processingTags[count($processingTags) -1]["close"] = "YES";
$tagName = $tagArray["tag"];
$tag = "<{$tagName}";
foreach ($tagArray["attributes"] as $key => $value) {
$tag .= " {$key}=\"{$value}\"";
}
if (! empty($tagArray["sub"]) || ! empty($tagArray["cdata"])) {
$cdata = $this->_convertEntity($tagArray["cdata"]);
$tag .= ">\n{$cdata}\n";
for ($i=count($tagArray["sub"]) - 1; $i>=0; $i--) {
$subArray = $tagArray["sub"][$i];
$processingTags[count($processingTags)] = $subArray;
}
}
else {
$processingTags[count($processingTags) - 1]["complete"] = "YES";
}
}
else {
$tag = (isset($processingTags[count($processingTags) - 1]["complete"]))
? "/>\n"
: "</{$processingTags[count($processingTags) - 1]["tag"]}>\n";
unset($processingTags[count($processingTags) - 1]);
}
$xmlString .= $tag;
}
$xmlString = preg_replace("/\n\s*/", "\n", $xmlString);
return $xmlString;
}
/**
* 生成一个xml节点
* @param string tag 标签名
* @param string cdata 数据
* @param array attr 属性列表
* @param array sub 子标签列表
*/
public function createTag($tag, $cdata = "", $attr = array(), $sub = array()) {
$newTag = $this->_getArrayTemplate();
if (! is_string($tag)) {
trigger_error("Cannot read the tag name.");
return INTERNAL_ERR;
}
$newTag["tag"] = $tag;
$newTag["cdata"] = $cdata;
$newTag["attributes"] = $attr;
$newTag["sub"] = $sub;
return $newTag;
}
/**
* 释放xml_parser
*/
public function free() {
xml_parser_free($this->_handler);
}
private function _getParser($encoding) {
if (in_array($encoding, $this->_supportedEncoding))
$this->_handler = xml_parser_create($encoding);
else
$this->_handler = NULL;
}
private function _stringToArray($xmlString) {
$res = xml_parse_into_struct($this->_handler, $xmlString, $array);
if (1 === $res)
return $array;
else
return NULL;
}
private function _convertEntity($string) {
$patterns = array("/</", "/</", "/&/", "/'/", "/\"/");
$replacement = array("<", ">", "&", "'", """);
return preg_replace($patterns, $replacement, $string);
}
private function _rConvertEntity($string) {
$patterns = array("/</", "/>/", "/&/", "/'/", "/"/");
$replacement = array("<", "<", "&", "'", "\"");
return preg_replace($patterns, $replacement, $string);
}
private function _getArrayTemplate() {
return array("tag" => "", "attributes" => array(), "sub" => array(), "cdata" => "");
}
/**
* 检测传入的参数是否是一个合法的tag数组
* @return 0 非法
* @return 1 合法
*/
private function _isTag($tag) {
if (! is_array($tag)) {
return 0;
}
if (! isset($tag["tag"]) || ! is_string($tag["tag"]) || empty($tag["tag"])) {
return 0;
}
if (! isset($tag["attributes"]) || ! is_array($tag["attributes"])) {
return 0;
}
if (! isset($tag["sub"]) || ! is_array($tag["sub"])) {
return 0;
}
if (! isset($tag["cdata"]) || ! is_string($tag["cdata"])) {
return 0;
}
return 1;
}
}