source: XmlTools2/trunk/xmlpatch.cpp@ 920

Last change on this file since 920 was 920, checked in by s10k, 11 years ago

more fixes and updated examples
File size: 19.1 KB
Line 
1#include "xmlpatch.h"
2
3XmlPatch::XmlPatch(QString patchFilesWildcard, QString forceTargetFilesWildcard, bool noBackups)
4{
5 this->patchFilesToProcess=UtilXmlTools::getAllPatchFilesByWildcard(patchFilesWildcard);
6 this->forceTargetFilesWildcard=forceTargetFilesWildcard;
7 this->backupsEnabled=!noBackups;
8
9 if(forceTargetFilesWildcard!=""){
10 std::cout << "User forced patch in the target file(s): " << forceTargetFilesWildcard.toLatin1().constData() << std::endl;
11 }
12
13 if(this->patchFilesToProcess.isEmpty()){
14 UtilXmlTools::displayErrorMessage("Loading patch files","No .patch or .oni-patch files were found for the wildcard: "+patchFilesWildcard);
15 }
16
17}
18
19void XmlPatch::readAndProcessPatchFile(){
20
21 // Process all PatchFiles
22 for(int i=0; i<this->patchFilesToProcess.size(); i++){
23
24 QFile inputFile(this->patchFilesToProcess[i]);
25
26 if (inputFile.open(QIODevice::ReadOnly))
27 {
28
29 QTextStream fileStream(&inputFile);
30
31 checkPatchVersion(this->patchFilesToProcess[i], fileStream);
32 checkAndProcessValidCommands(fileStream);
33
34 inputFile.close();
35 }
36 else{
37 UtilXmlTools::displayErrorMessage("Read patch file", "Error opening patch file: '" + this->patchFilesToProcess[i] + "'.\n" + inputFile.errorString());
38 }
39
40 }
41
42 UtilXmlTools::displaySuccessMessage(this->patchFilesToProcess.size(),"Patch File(s)");
43
44}
45
46void XmlPatch::insertNodesOperation(const QString &xmlString, XmlFilter &filters, const QString &xPathExpression, const QString &filesWildcard){
47
48 QStringList filesToProcess;
49 QList<pugi::xml_node> nodesToInsertion;
50 pugi::xml_document newNode;
51 pugi::xml_parse_result result;
52
53 filesToProcess=UtilXmlTools::getAllXmlFilesByWildcard(filesWildcard);
54
55 if(filesToProcess.isEmpty()){
56 UtilXmlTools::displayErrorMessage("@ADD_INSIDE_NODES","No XML files were found for the wildcard: "+filesWildcard);
57 }
58
59 result=newNode.load(xmlString.toLatin1().constData()); // load xml to insert
60
61 if(result.status!=pugi::status_ok){
62 UtilXmlTools::displayErrorMessage("@ADD_INSIDE_NODES", "The xml node to insert is invalid.\n" + Util::toQString(result.description()));
63 }
64
65 // Process all XmlFiles
66 for(int i=0; i<filesToProcess.size(); i++){
67
68 UtilXmlTools::loadXmlFile(filesToProcess[i],this->document,this->rootNode,this->backupsEnabled,"@ADD_INSIDE_NODES");
69
70 // Check how the element will be fetched via element name or xpath expression
71 if(xPathExpression.isEmpty()){
72 UtilXmlTools::getAllNamedElements(this->rootNode,nodesToInsertion,filters);
73 }
74 else{
75 UtilXmlTools::getAllXpathElements(xPathExpression,this->document,nodesToInsertion);
76 }
77
78 if(nodesToInsertion[0].type()==pugi::node_null){
79
80 QString errMessage;
81
82 if(xPathExpression.isEmpty()){
83 errMessage = "It wasn't found any node with a ElementName: '" + filters.getElementName() + "'";
84 if(filters.getParentElementName()!=""){
85 errMessage += " and a ParentElementName: '" + filters.getParentElementName() + "'";
86 }
87 if(filters.getAttributeName()!=""){
88 errMessage += " and an AttributeName: '" + filters.getAttributeName() + "' and an AttributeValue: '" + filters.getAttributeValue() + "'";
89 }
90 }
91 else{
92 errMessage = "It wasn't found any node with a XPathExpression: '" + xPathExpression + "'";
93 }
94
95 UtilXmlTools::displayErrorMessage("@ADD_INSIDE_NODES",errMessage);
96 }
97
98 for(int j=0; j<nodesToInsertion.size(); j++){
99 nodesToInsertion[j].prepend_copy(newNode.first_child()); // append the new node
100 }
101
102
103 UtilXmlTools::saveXmlFile(filesToProcess[i],this->document, "@ADD_INSIDE_NODES");
104 }
105
106 UtilXmlTools::displaySuccessMessage(filesToProcess.size(),"@ADD_INSIDE_NODES");
107}
108
109void XmlPatch::removeNodesOperation(XmlFilter &filters, const QString &xPathExpression, const QString &filesWildcard){
110
111 QStringList filesToProcess;
112
113 QList<pugi::xml_node> nodesToDeletion;
114
115 filesToProcess=UtilXmlTools::getAllXmlFilesByWildcard(filesWildcard);
116
117 if(filesToProcess.isEmpty()){
118 UtilXmlTools::displayErrorMessage("@REMOVE_NODES","No XML files were found for the wildcard: "+filesWildcard);
119 }
120
121 // Process all XmlFiles
122 for(int i=0; i<filesToProcess.size(); i++){
123
124 UtilXmlTools::loadXmlFile(filesToProcess[i],this->document,this->rootNode,this->backupsEnabled,"@REMOVE_NODES");
125
126 // Check how the element will be fetched via element name or xpath expression
127 if(xPathExpression.isEmpty()){
128 UtilXmlTools::getAllNamedElements(this->rootNode,nodesToDeletion,filters);
129 }
130 else{
131 UtilXmlTools::getAllXpathElements(xPathExpression,this->document,nodesToDeletion);
132 }
133
134 if(nodesToDeletion[0].type()==pugi::node_null){
135
136 QString errMessage;
137
138 if(xPathExpression.isEmpty()){
139 errMessage = "It wasn't found any node with a ElementName: '" + filters.getElementName() + "'";
140 if(filters.getParentElementName()!=""){
141 errMessage += " and a ParentElementName: '" + filters.getParentElementName() + "'";
142 }
143 if(filters.getAttributeName()!=""){
144 errMessage += " and an AttributeName: '" + filters.getAttributeName() + "' and an AttributeValue: '" + filters.getAttributeValue() + "'";
145 }
146 }
147 else{
148 errMessage = "It wasn't found any node with a XPathExpression: '" + xPathExpression + "'";
149 }
150
151 UtilXmlTools::displayErrorMessage("@REMOVE_NODES",errMessage);
152 }
153
154 // Delete all the specified nodes
155 for(int j=0; j<nodesToDeletion.size(); j++){
156 if(!nodesToDeletion[j].parent().remove_child(nodesToDeletion[j])){ // remove the node
157
158 QString errMessage;
159 if(xPathExpression.isEmpty()){
160 errMessage = "Couldn't remove the node with Element '" + filters.getElementName() + "'";
161
162 if(filters.getParentElementName()!=""){
163 errMessage += " and a ParentElement: '" + filters.getParentElementName() + "'";
164 }
165 }
166 else{
167 errMessage = "Couldn't remove the node with the XPathExpression '" + xPathExpression + "'";
168 }
169
170 UtilXmlTools::displayErrorMessage("@REMOVE_NODES",errMessage);
171 }
172 }
173
174 UtilXmlTools::saveXmlFile(filesToProcess[i],this->document, "@REMOVE_NODES");
175 }
176
177 UtilXmlTools::displaySuccessMessage(filesToProcess.size(), "@REMOVE_NODES");
178}
179
180void XmlPatch::executeCommandOperation(const QString &commandString){
181
182 QProcess newXmlToolsInstance;
183 QString resultOutput;
184
185 // Avoid infinite fork loops
186 if(commandString.contains(" -p ") || commandString.contains(" --patch-files ")){
187 UtilXmlTools::displayErrorMessage("@COMMAND","Use of --patch-files option is not allowed inside a patch file");
188 }
189
190 newXmlToolsInstance.start(GlobalVars::AppExecutable + " " + commandString);
191 newXmlToolsInstance.waitForFinished(-1); // wait for new instance to finish
192
193 resultOutput=newXmlToolsInstance.readAll();
194
195 if(newXmlToolsInstance.exitCode()!=0){
196 UtilXmlTools::displayErrorMessage("@COMMAND", "An error ocurred:\n" + resultOutput);
197 exit(1);
198 }
199
200 std::cout << "@COMMAND patch operation output:\n"
201 << "########################################################################\n"
202 << resultOutput.toLatin1().constData()
203 << "########################################################################"
204 << std::endl;
205
206 UtilXmlTools::displaySuccessMessage(1,"@COMMAND");
207}
208
209void XmlPatch::executeCustomCommandOperation(const QString &jsString, const QString &filesWildcard){
210
211 QStringList filesToProcess;
212#ifdef _USE_OLD_JS_ENGINE
213 QScriptEngine engine;
214 QScriptValue engineResult; // variable to check for js_errors
215#else
216 QJSEngine engine;
217 QJSValue engineResult; // variable to check for js_errors
218#endif
219
220 QString rexmlString, jsxmlString, currXmlFileString;
221
222
223 QFile rexmlfile(":/resources/libs/rexml.js");
224 QFile jsxmlfile(":/resources/libs/jsxml.js");
225
226 filesToProcess=UtilXmlTools::getAllXmlFilesByWildcard(filesWildcard);
227
228 if(filesToProcess.isEmpty()){
229 UtilXmlTools::displayErrorMessage("@CUSTOM_CODE","No XML files were found for the wildcard: "+filesWildcard);
230 }
231
232 rexmlfile.open(QFile::ReadOnly | QFile::Text);
233 jsxmlfile.open(QFile::ReadOnly | QFile::Text);
234
235 rexmlString=QTextStream(&rexmlfile).readAll();
236 jsxmlString=QTextStream(&jsxmlfile).readAll();
237
238 engine.evaluate(rexmlString); // load js libraries
239 engine.evaluate(jsxmlString);
240
241 // Process all XmlFiles
242 for(int i=0; i<filesToProcess.size(); i++){
243
244 if(this->backupsEnabled){
245 UtilXmlTools::backupFile(filesToProcess[i]);
246 }
247
248 QFile currXmlFile(filesToProcess[i]);
249
250 if(!currXmlFile.open(QFile::ReadOnly | QFile::Text)){
251 UtilXmlTools::displayErrorMessage("@CUSTOM_CODE","Error loading '" + filesToProcess[i] + "' file for read operation.");
252 }
253
254 currXmlFileString=QTextStream(&currXmlFile).readAll();
255
256 currXmlFile.close(); // close reading
257
258 engine.globalObject().setProperty("$xmlData",currXmlFileString);
259
260 engineResult=engine.evaluate(jsString);
261
262#ifdef _USE_OLD_JS_ENGINE
263 if (engine.hasUncaughtException()) {
264 displayJsException(engine,engineResult);
265 }
266#else
267 checkForJsException(engineResult);
268#endif
269
270 if(!currXmlFile.open(QFile::WriteOnly | QFile::Text | QIODevice::Truncate)){
271 UtilXmlTools::displayErrorMessage("@CUSTOM_CODE","Error loading '" + filesToProcess[i] + "' file for @CUSTOM_CODE write operation.");
272 }
273
274 engineResult=engine.globalObject().property("$xmlData");
275
276#ifdef _USE_OLD_JS_ENGINE
277 if (engine.hasUncaughtException()) {
278 displayJsException(engine,engineResult);
279 }
280#else
281 checkForJsException(engineResult);
282#endif
283
284 QTextStream(&currXmlFile) << engineResult.toString(); // retreive the modified xml by javascript and save it to the file
285 }
286
287 UtilXmlTools::displaySuccessMessage(filesToProcess.size(), "@CUSTOM_CODE");
288}
289
290void XmlPatch::checkPatchVersion(const QString &file, QTextStream &fileStream){
291
292 QString line, patchVersion="";
293
294 // First get the patch version and check it validity
295 while ( !fileStream.atEnd() ){
296 line = fileStream.readLine();
297
298 if(line.startsWith('#')){ // Ignore comments
299 continue;
300 }
301 else if(line.startsWith("@XML_TOOLS")){
302
303 patchVersion=getPatchParameterValue(line,"Version");
304
305 if(!patchVersion.startsWith("2.0")){
306 QString errMessage;
307
308 errMessage = "The current patch version is incompatible with this XmlTools version:\n";
309 errMessage += "Patch file name: '" + file + "'\n";
310 errMessage += "XmlTools version: " + GlobalVars::AppVersion + "\n" + "CurrPatch version: " + patchVersion + "";
311 UtilXmlTools::displayErrorMessage("@XML_TOOLS",errMessage);
312 }
313 break; // We have got what we wanted
314 }
315 }
316
317 if(patchVersion==""){
318 UtilXmlTools::displayErrorMessage("@XML_TOOLS","Patch version not found.");
319 }
320
321}
322
323void XmlPatch::checkAndProcessValidCommands(QTextStream &fileStream){
324
325 QString line, filesWildcard;
326 QString xmlToInsert, command, jsCode;
327 QString xPathExpression;
328 XmlFilter filters;
329
330 // Process the rest of the commands in patch file
331 while ( !fileStream.atEnd() ){
332 line = fileStream.readLine();
333
334 if(line.startsWith('#')){ // Ignore comments
335 continue;
336 }
337 else if(line.startsWith("@ADD_INSIDE_NODES")){
338 xPathExpression=getPatchParameterValue(line,"XPathExpression");
339 filters.setElementName(getPatchParameterValue(line,"ElementName"));
340 filters.setParentElementName(getPatchParameterValue(line,"ParentElementName"));
341 filters.setAttributeName(getPatchParameterValue(line,"AttributeName"));
342 filters.setAttributeValue(getPatchParameterValue(line,"AttributeValue"));
343
344 if(this->forceTargetFilesWildcard!=""){
345 filesWildcard=this->forceTargetFilesWildcard;
346 }
347 else{
348 filesWildcard=getPatchParameterValue(line,"Files");
349 }
350
351 // Check options
352 if(xPathExpression.isEmpty() && filters.getElementName().isEmpty()){
353 UtilXmlTools::displayErrorMessage("@ADD_INSIDE_NODES","ElementName option or XPathExpression option is required.");
354 }
355 else if(!xPathExpression.isEmpty() && !filters.getElementName().isEmpty()){
356 UtilXmlTools::displayErrorMessage("@ADD_INSIDE_NODES","ElementName option and XPathExpression options cannot be used simultaneously.");
357 }
358 if(filters.getAttributeName()!="" && filters.getAttributeValue()==""){
359 UtilXmlTools::displayErrorMessage("@ADD_INSIDE_NODES","AttributeValue option is required if using AttributeName option.");
360 }
361
362 if(filters.getAttributeValue()!="" && filters.getAttributeName()==""){
363 UtilXmlTools::displayErrorMessage("@ADD_INSIDE_NODES","AttributeName option is required if using AttributeValue option.");
364 }
365
366 while ( !fileStream.atEnd() && !line.startsWith("</xml>")){
367 line = fileStream.readLine();
368
369 if(!line.startsWith("<xml>") && !line.startsWith("</xml>")){
370 xmlToInsert += line + "\n";
371 }
372 }
373
374 insertNodesOperation(xmlToInsert,filters,xPathExpression,filesWildcard);
375
376 xmlToInsert.clear();
377 filters.clear();
378 xPathExpression.clear();
379 filesWildcard.clear();
380 }
381 else if(line.startsWith("@REMOVE_NODES")){
382
383 xPathExpression=getPatchParameterValue(line,"XPathExpression");
384 filters.setElementName(getPatchParameterValue(line,"ElementName"));
385 filters.setParentElementName(getPatchParameterValue(line,"ParentElementName"));
386 filters.setAttributeName(getPatchParameterValue(line,"AttributeName"));
387 filters.setAttributeValue(getPatchParameterValue(line,"AttributeValue"));
388
389 if(this->forceTargetFilesWildcard!=""){
390 filesWildcard=this->forceTargetFilesWildcard;
391 }
392 else{
393 filesWildcard=getPatchParameterValue(line,"Files");
394 }
395
396 // Check options
397 if(xPathExpression.isEmpty() && filters.getElementName().isEmpty()){
398 UtilXmlTools::displayErrorMessage("@REMOVE_NODES","ElementName option or XPathExpression option is required.");
399 }
400 else if(!xPathExpression.isEmpty() && !filters.getElementName().isEmpty()){
401 UtilXmlTools::displayErrorMessage("@REMOVE_NODES","ElementName option and XPathExpression options cannot be used simultaneously.");
402 }
403
404 if(filters.getAttributeName()!="" && filters.getAttributeValue()==""){
405 UtilXmlTools::displayErrorMessage("@REMOVE_NODES","AttributeValue option is required if using AttributeName option.");
406 }
407
408 if(filters.getAttributeValue()!="" && filters.getAttributeName()==""){
409 UtilXmlTools::displayErrorMessage("@REMOVE_NODES","AttributeName option is required if using AttributeValue option.");
410 }
411
412 removeNodesOperation(filters,xPathExpression,filesWildcard);
413
414 filters.clear();
415 xPathExpression.clear();
416 filesWildcard.clear();
417 }
418 else if(line.startsWith("@COMMAND")){
419
420 command=getPatchParameterValue(line,"Arguments");
421
422 command.replace("'","\""); //replace apostrophe by quotes, to avoid problems
423
424 executeCommandOperation(command);
425
426 command.clear();
427 }
428 else if(line.startsWith("@CUSTOM_CODE")){
429
430 if(this->forceTargetFilesWildcard!=""){
431 filesWildcard=this->forceTargetFilesWildcard;
432 }
433 else{
434 filesWildcard=getPatchParameterValue(line,"Files");
435 }
436
437 while ( !fileStream.atEnd() && !line.startsWith("</code>")){
438
439 line = fileStream.readLine();
440
441 if(!line.startsWith("<code>") && !line.startsWith("</code>")){
442 jsCode += line + "\n";
443 }
444 }
445
446 executeCustomCommandOperation(jsCode,filesWildcard);
447
448 jsCode.clear();
449 filesWildcard.clear();
450 }
451 }
452}
453
454QString XmlPatch::getPatchParameterValue(const QString& line, QString parameter){
455
456 int startValueIdx, endValueIdx;
457
458 parameter=" "+parameter+" "; // Parameters include a space before and after it's value.
459
460 if(!line.contains(parameter)){
461 if(parameter==" ParentElementName " || parameter==" AttributeName " || parameter==" AttributeValue "
462 || parameter==" ElementName " || parameter==" XPathExpression "){
463 return ""; // not mandatory
464 }
465 parameter.remove(" "); // just remove the space added so it doesn't look weird when outputted to the user
466
467 UtilXmlTools::displayErrorMessage("Read patch file parameter","Couldn't retreive '" + parameter + "' parameter.");
468 }
469
470 startValueIdx=line.indexOf(parameter); // get the position where parameter is defined
471 endValueIdx=line.indexOf("\"",startValueIdx)+1; // get the position where parameter value begins (+1 to ignore mandotory quote)
472
473 startValueIdx=endValueIdx;
474 endValueIdx=line.indexOf("\"",startValueIdx); // get the last mandatory quote of the value
475
476 return line.mid(startValueIdx,endValueIdx-startValueIdx); // return the value of the parameter (is in the middle of the mandatory quotes)
477}
478
479#ifdef _USE_OLD_JS_ENGINE
480void XmlPatch::displayJsException(QScriptEngine &engine, QScriptValue &engineResult){
481 if (engine.hasUncaughtException()) {
482 UtilXmlTools::displayErrorMessage("@CUSTOM_CODE","Uncaught js exception (user code) at line " +QString::number(engine.uncaughtExceptionLineNumber()) + ":\n" + engineResult.toString());
483 }
484}
485#else
486void XmlPatch::checkForJsException(QJSValue &engineResult){
487 if (engineResult.isError()) {
488 UtilXmlTools::displayErrorMessage("@CUSTOM_CODE","Uncaught js exception (user code):\n" + engineResult.toString());
489 }
490}
491#endif
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