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1
52
53 package freemarker.ext.dom;
54
55
56 import java.io.*;
57 import java.util.*;
58 import freemarker.template.*;
59
60
66
67 public class Transform {
68
69 private File inputFile, ftlFile, outputFile;
70 private String  encoding;
71 private Locale locale;
72 private Configuration cfg;
73
74
77 static public void main(String [] args) {
78 try {
79 Transform proc = transformFromArgs(args);
80 proc.transform();
81 } catch (IllegalArgumentException iae) {
82 System.err.println(iae.getMessage());
83 usage();
84 } catch (Exception e) {
85 e.printStackTrace();
86 }
87 }
88
89
96
97 Transform(File inputFile, File ftlFile, File outputFile, Locale locale, String encoding) throws IOException {
98 if (encoding == null) {
99 encoding = System.getProperty("file.encoding");
100 }
101 if (locale == null) {
102 locale = Locale.getDefault();
103 }
104 this.encoding = encoding;
105 this.locale = locale;
106 this.inputFile = inputFile;
107 this.ftlFile = ftlFile;
108 this.outputFile = outputFile;
109 File ftlDirectory = ftlFile.getAbsoluteFile().getParentFile();
110 cfg = new Configuration();
111 cfg.setDirectoryForTemplateLoading(ftlDirectory);
112 }
113
114
117 void transform() throws Exception {
118 String templateName = ftlFile.getName();
119 Template template = cfg.getTemplate(templateName, locale);
120 NodeModel rootNode = NodeModel.parse(inputFile);
121 OutputStream outputStream = System.out;
122 if (outputFile != null) {
123 outputStream = new FileOutputStream(outputFile);
124 }
125 Writer outputWriter = new OutputStreamWriter(outputStream, encoding);
126 try {
127 template.process(null, outputWriter, null, rootNode);
128 } finally {
129 if (outputFile != null)
130 outputWriter.close();
131 }
132 }
133
134 static Transform transformFromArgs(String [] args) throws IOException {
135 int i=0;
136 String input = null, output=null, ftl = null, loc = null, enc = null;
137 while (i<args.length) {
138 String dashArg = args[i++];
139 if (i>=args.length) {
140 throw new IllegalArgumentException ("");
141 }
142 String arg = args[i++];
143 if (dashArg.equals("-in")) {
144 if (input != null) {
145 throw new IllegalArgumentException ("The input file should only be specified once");
146 }
147 input = arg;
148 } else if (dashArg.equals("-ftl")) {
149 if (ftl != null) {
150 throw new IllegalArgumentException ("The ftl file should only be specified once");
151 }
152 ftl = arg;
153 } else if (dashArg.equals("-out")) {
154 if (output != null) {
155 throw new IllegalArgumentException ("The output file should only be specified once");
156 }
157 output = arg;
158 } else if (dashArg.equals("-locale")) {
159 if (loc != null) {
160 throw new IllegalArgumentException ("The locale should only be specified once");
161 }
162 loc = arg;
163 } else if (dashArg.equals("-encoding")) {
164 if (enc != null) {
165 throw new IllegalArgumentException ("The encoding should only be specified once");
166 }
167 enc = arg;
168 } else {
169 throw new IllegalArgumentException ("Unknown input argument: " + dashArg);
170 }
171 }
172 if (input == null) {
173 throw new IllegalArgumentException ("No input file specified.");
174 }
175 if (ftl == null) {
176 throw new IllegalArgumentException ("No ftl file specified.");
177 }
178 File inputFile = new File(input).getAbsoluteFile();
179 File ftlFile = new File(ftl).getAbsoluteFile();
180 if (!inputFile.exists()) {
181 throw new IllegalArgumentException ("Input file does not exist: " + input);
182 }
183 if (!ftlFile.exists()) {
184 throw new IllegalArgumentException ("FTL file does not exist: " + ftl);
185 }
186 if (!inputFile.isFile() || !inputFile.canRead()) {
187 throw new IllegalArgumentException ("Input file must be a readable file: " + input);
188 }
189 if (!ftlFile.isFile() || !ftlFile.canRead()) {
190 throw new IllegalArgumentException ("FTL file must be a readable file: " + ftl);
191 }
192 File outputFile = null;
193 if (output != null) {
194 outputFile = new File(output).getAbsoluteFile();
195 File outputDirectory = outputFile.getParentFile();
196 if (!outputDirectory.exists() || !outputDirectory.canWrite()) {
197 throw new IllegalArgumentException ("The output directory must exist and be writable: " + outputDirectory);
198 }
199 }
200 Locale locale = Locale.getDefault();
201 if (loc != null) {
202 locale = localeFromString(loc);
203 }
204 return new Transform(inputFile, ftlFile, outputFile, locale, enc);
205 }
206
207 static Locale localeFromString(String ls) {
208 if (ls == null) ls = "";
209 String lang="", country="", variant="";
210 StringTokenizer st = new StringTokenizer(ls, "_-,");
211 if (st.hasMoreTokens()) {
212 lang = st.nextToken();
213 if (st.hasMoreTokens()) {
214 country = st.nextToken();
215 if (st.hasMoreTokens()) {
216 variant = st.nextToken();
217 }
218 }
219 return new Locale(lang, country, variant);
220 } else {
221 return Locale.getDefault();
222 }
223 }
224
225 static void usage() {
226 System.err.println("Usage: java freemarker.ext.dom.Transform -in <xmlfile> -ftl <ftlfile> [-out <outfile>] [-locale <locale>] [-encoding <encoding>]");
227 System.exit(-1);
228 }
229 }
230 |
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