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Commit6f8a16f

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committed
Refactor + Add Logging
1 parent2ee234a commit6f8a16f

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7 files changed

+167
-181
lines changed

7 files changed

+167
-181
lines changed

‎.gitignore‎

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Original file line numberDiff line numberDiff line change
@@ -15,4 +15,6 @@ artifacts/
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# Maven
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log/
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target/
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target/
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examples/

‎README.md‎

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@@ -3,8 +3,19 @@
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* Uses the traditional methodology to generate the xml (without a library), through
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of nodes and tree structure.
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* Can read ANY CSV File
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* Args are: Input file, output file, element node name and optionally, if you add -s program will read the csv
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* Args are:
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-[0] Input file
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-[1] Output file
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-[2] Element node name and optionally,
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-[3] -s parameter, if you add it, program will read the csv
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as semicolon-separated values instead of comma-separated values.
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Example of command to compile and run the program for comma-separated values:
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```
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javac CSV2XML.java
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java CSV2XML inputfilePath outputFilePath element -s
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```
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##Project test
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###CSV Input File
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Original file line numberDiff line numberDiff line change
@@ -1,58 +1,59 @@
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packagecom.codepressed.CSVtoXML;
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3-
importorg.apache.commons.lang3.StringUtils;
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importorg.w3c.dom.Document;
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importjavax.xml.parsers.ParserConfigurationException;
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importjavax.xml.transform.TransformerException;
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importjava.io.IOException;
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importjava.util.ArrayList;
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importjava.util.List;
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importjava.util.logging.Level;
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importjava.util.logging.Logger;
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1014
publicclassMain {
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privatestaticfinalLoggerlogger =Logger.getLogger(Main.class.getName());
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1117
/**
1218
* Executes the CSV to XML conversion
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*
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* @param args Input file,outputfile,elementsnames and csv type.
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* @author Daniel Apesteguia Timoner
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* @param args[0] =Input file,[1] = Outputfile,[2] = Elementsnames, [3] = csv type.
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* @author Daniel Apesteguia Timoner (Codepressed)
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*/
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publicstaticvoidmain(String[]args) {
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1825
//Arg validator
1926
if (args.length ==0) {
20-
System.out.println("You didn't type any args.");
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logger.log(Level.SEVERE,"No args were specified.");
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System.exit(0);
2229
}
23-
//Vars Initialization
24-
StringcsvFile =args[0];
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StringxmlFile =args[1];
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StringelementName;
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StringcsvSplit =",(?=([^\"]*\"[^\"]*\")*[^\"]*$)";
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try {
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elementName =args[2];
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}catch (ArrayIndexOutOfBoundsExceptione) {
32-
System.out.println("You didn't especify any element so we will fix 'element' as parental node.");
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elementName ="element";
34-
}
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//Vars Initialization
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StringcsvFile =args[0];
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StringxmlFile =args[1];
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StringelementName;
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StringcsvSplit =",(?=([^\"]*\"[^\"]*\")*[^\"]*$)";
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36-
try {
37-
if (args[3] =="-s")
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csvSplit =";(?=([^\"]*\"[^\"]*\")*[^\"]*$)";
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}catch (ArrayIndexOutOfBoundsExceptione){
40-
}
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try {
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elementName =args[2];
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}catch (ArrayIndexOutOfBoundsExceptione) {
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logger.log(Level.INFO,"Since you didn't specify a element name, 'element' will be the parental node.");
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elementName ="element";
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}
4142

42-
try {
43-
ArrayList<String[]>elements;
44-
elements =newReader().CSVtoArrayList(csvFile,csvSplit);
45-
DocumentxmlDoc;
46-
xmlDoc =newXMLDoc().docBuilder(elements,elementName);
47-
XMLTransformer.transformDocToFile(xmlDoc,xmlFile);
48-
}catch (IOExceptione) {
49-
e.printStackTrace();
50-
System.out.println("File wasn't found, error: " +e);
51-
}catch (TransformerExceptione) {
52-
System.out.println("Transformer error: " +e);
53-
}catch (ParserConfigurationExceptione) {
54-
System.out.println("Configuration error: " +e);
55-
}
43+
try {
44+
if (args[3] =="-s")
45+
csvSplit =";(?=([^\"]*\"[^\"]*\")*[^\"]*$)";
46+
}catch (ArrayIndexOutOfBoundsExceptione){
47+
}
48+
49+
List<String[]>elements;
50+
elements =XMLutils.readCsvFile(csvFile,csvSplit);
51+
DocumentxmlDoc;
52+
xmlDoc =XMLutils.createXmlDocument(elements,elementName);
53+
XMLutils.writeXmlDocumentToFile(xmlDoc,xmlFile);
54+
}
5655
}
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}
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‎src/main/java/com/codepressed/CSVtoXML/Reader.java‎

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‎src/main/java/com/codepressed/CSVtoXML/XMLDoc.java‎

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‎src/main/java/com/codepressed/CSVtoXML/XMLTransformer.java‎

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@@ -0,0 +1,115 @@
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packagecom.codepressed.CSVtoXML;
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3+
importorg.w3c.dom.Document;
4+
importorg.w3c.dom.Element;
5+
importorg.w3c.dom.Text;
6+
7+
importjavax.xml.parsers.DocumentBuilder;
8+
importjavax.xml.parsers.DocumentBuilderFactory;
9+
importjavax.xml.parsers.ParserConfigurationException;
10+
importjavax.xml.transform.OutputKeys;
11+
importjavax.xml.transform.Transformer;
12+
importjavax.xml.transform.TransformerException;
13+
importjavax.xml.transform.TransformerFactory;
14+
importjavax.xml.transform.dom.DOMSource;
15+
importjavax.xml.transform.stream.StreamResult;
16+
importjava.io.BufferedReader;
17+
importjava.io.File;
18+
importjava.io.FileOutputStream;
19+
importjava.io.IOException;
20+
importjava.nio.file.Files;
21+
importjava.nio.file.Paths;
22+
importjava.util.ArrayList;
23+
importjava.util.List;
24+
importjava.util.logging.Level;
25+
importjava.util.logging.Logger;
26+
27+
publicclassXMLutils {
28+
29+
privatestaticfinalLoggerlogger =Logger.getLogger(XMLutils.class.getName());
30+
31+
publicstaticbooleanwriteXmlDocumentToFile(DocumentxmlDoc,StringxmlFilePath) {
32+
try {
33+
TransformerFactoryxmlTransformerFactory =TransformerFactory.newInstance();
34+
TransformerxmlTransformer =xmlTransformerFactory.newTransformer();
35+
xmlTransformer.setOutputProperty(OutputKeys.INDENT,"yes");
36+
xmlTransformer.setOutputProperty(OutputKeys.METHOD,"xml");
37+
xmlTransformer.setOutputProperty(OutputKeys.ENCODING,"UTF-8");
38+
xmlTransformer.setOutputProperty("{http://xml.apache.org/xslt}indent-amount","4");
39+
40+
try (FileOutputStreamoutputStream =newFileOutputStream(newFile(xmlFilePath))) {
41+
xmlTransformer.transform(newDOMSource(xmlDoc),newStreamResult(outputStream));
42+
}
43+
returntrue;
44+
}catch (TransformerException |IOExceptione) {
45+
logger.log(Level.SEVERE,"Error writing xml document to file",e);
46+
returnfalse;
47+
}
48+
}
49+
50+
publicstaticDocumentcreateXmlDocument(List<String[]>XMLelements,StringelementName) {
51+
if (elementName ==null) {
52+
elementName ="element";
53+
}
54+
55+
try {
56+
DocumentBuilderFactoryxmlFactory =DocumentBuilderFactory.newInstance();
57+
DocumentBuilderxmlBuilder =xmlFactory.newDocumentBuilder();
58+
DocumentxmlDoc =xmlBuilder.newDocument();
59+
60+
ElementrootElement =xmlDoc.createElement("root");
61+
xmlDoc.appendChild(rootElement);
62+
ElementmainElement =xmlDoc.createElement(elementName +"s");
63+
rootElement.appendChild(mainElement);
64+
65+
booleanheaderDefined =false;
66+
String[]header =newString[XMLelements.size()];
67+
68+
for (String[]node :XMLelements) {
69+
if (headerDefined) {
70+
ElementnodesElements =xmlDoc.createElement(elementName);
71+
mainElement.appendChild(nodesElements);
72+
73+
for (intj =0;j <node.length;j++) {
74+
node[j] =node[j].replaceAll("\"","").trim();
75+
ElementnodesValues =xmlDoc.createElement(header[j]);
76+
nodesElements.appendChild(nodesValues);
77+
TextnodeTxt =xmlDoc.createTextNode(node[j]);
78+
nodesValues.appendChild(nodeTxt);
79+
}
80+
}else {
81+
header =node;
82+
for (intj =0;j <node.length;j++) {
83+
header[j] =header[j].replaceAll("[^a-zA-Z0-9]","");
84+
try {
85+
Integer.parseInt(header[j]);
86+
header[j] ="node" +header[j];
87+
}catch (NumberFormatExceptione) {
88+
}
89+
}
90+
headerDefined =true;
91+
}
92+
}
93+
returnxmlDoc;
94+
}catch (ParserConfigurationExceptione) {
95+
logger.log(Level.SEVERE,"Error creating the xml document",e);
96+
returnnull;
97+
}
98+
}
99+
100+
publicstaticList<String[]>readCsvFile(StringcsvFilePath,Stringseparator) {
101+
List<String[]>elements =newArrayList<>();
102+
103+
try (BufferedReaderreader =Files.newBufferedReader(Paths.get(csvFilePath))) {
104+
Stringline;
105+
while ((line =reader.readLine()) !=null) {
106+
String[]nodes =line.split(separator);
107+
elements.add(nodes);
108+
}
109+
}catch(IOExceptione){
110+
logger.log(Level.SEVERE,"Error reading the csv file",e);
111+
}
112+
returnelements;
113+
}
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115+
}

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