/**
* load Ant properties from the source file or resource
*
* @exception BuildException if something goes wrong with the build
*/
public final void execute() throws BuildException {
// validation
if (src == null) {
throw new BuildException("A source resource is required.");
}
if (!src.isExists()) {
if (src instanceof JavaResource) {
// dreaded backwards compatibility
log("Unable to find resource " + src, Project.MSG_WARN);
return;
}
throw new BuildException("Source resource does not exist: " + src);
}
BufferedInputStream bis = null;
Reader instream = null;
ByteArrayInputStream tis = null;
try {
bis = new BufferedInputStream(src.getInputStream());
if (encoding == null) {
instream = new InputStreamReader(bis);
} else {
instream = new InputStreamReader(bis, encoding);
}
ChainReaderHelper crh = new ChainReaderHelper();
crh.setPrimaryReader(instream);
crh.setFilterChains(filterChains);
crh.setProject(getProject());
instream = crh.getAssembledReader();
String text = crh.readFully(instream);
if (text != null && text.length() != 0) {
if (!text.endsWith("\n")) {
text = text + "\n";
}
tis = new ByteArrayInputStream(text.getBytes("ISO8859_1"));
final Properties props = new Properties();
props.load(tis);
Property propertyTask = new Property();
propertyTask.bindToOwner(this);
propertyTask.addProperties(props);
}
} catch (final IOException ioe) {
throw new BuildException("Unable to load file: " + ioe, ioe, getLocation());
} finally {
FileUtils.close(bis);
FileUtils.close(tis);
}
}
/**
* Return the result of the filters on the sourcefilename.
*
* @param sourceFileName the filename to map
* @return a one-element array of converted filenames, or null if the filterchain returns an empty
* string.
*/
public String[] mapFileName(String sourceFileName) {
try {
Reader stringReader = new StringReader(sourceFileName);
ChainReaderHelper helper = new ChainReaderHelper();
helper.setBufferSize(8192);
helper.setPrimaryReader(stringReader);
helper.setProject(getProject());
Vector filterChains = new Vector();
filterChains.add(this);
helper.setFilterChains(filterChains);
String result = FileUtils.readFully(helper.getAssembledReader());
if (result.length() == 0) {
return null;
} else {
return new String[] {result};
}
} catch (BuildException ex) {
throw ex;
} catch (Exception ex) {
throw new BuildException(ex);
}
}
/**
* Convenience method to copy content from one Resource to another specifying whether token
* filtering must be used, whether filter chains must be used, whether newer destination files may
* be overwritten and whether the last modified time of <code>dest</code> file should be made
* equal to the last modified time of <code>source</code>.
*
* @param source the Resource to copy from. Must not be <code>null</code>.
* @param dest the Resource to copy to. Must not be <code>null</code>.
* @param filters the collection of filters to apply to this copy.
* @param filterChains filterChains to apply during the copy.
* @param overwrite Whether or not the destination Resource should be overwritten if it already
* exists.
* @param preserveLastModified Whether or not the last modified time of the destination Resource
* should be set to that of the source.
* @param inputEncoding the encoding used to read the files.
* @param outputEncoding the encoding used to write the files.
* @param project the project instance.
* @throws IOException if the copying fails.
* @since Ant 1.7
*/
public static void copyResource(
Resource source,
Resource dest,
FilterSetCollection filters,
Vector filterChains,
boolean overwrite,
boolean preserveLastModified,
String inputEncoding,
String outputEncoding,
Project project)
throws IOException {
if (!overwrite) {
long slm = source.getLastModified();
if (dest.isExists() && slm != 0 && dest.getLastModified() > slm) {
return;
}
}
final boolean filterSetsAvailable = (filters != null && filters.hasFilters());
final boolean filterChainsAvailable = (filterChains != null && filterChains.size() > 0);
if (filterSetsAvailable) {
BufferedReader in = null;
BufferedWriter out = null;
try {
InputStreamReader isr = null;
if (inputEncoding == null) {
isr = new InputStreamReader(source.getInputStream());
} else {
isr = new InputStreamReader(source.getInputStream(), inputEncoding);
}
in = new BufferedReader(isr);
OutputStreamWriter osw = null;
if (outputEncoding == null) {
osw = new OutputStreamWriter(dest.getOutputStream());
} else {
osw = new OutputStreamWriter(dest.getOutputStream(), outputEncoding);
}
out = new BufferedWriter(osw);
if (filterChainsAvailable) {
ChainReaderHelper crh = new ChainReaderHelper();
crh.setBufferSize(FileUtils.BUF_SIZE);
crh.setPrimaryReader(in);
crh.setFilterChains(filterChains);
crh.setProject(project);
Reader rdr = crh.getAssembledReader();
in = new BufferedReader(rdr);
}
LineTokenizer lineTokenizer = new LineTokenizer();
lineTokenizer.setIncludeDelims(true);
String newline = null;
String line = lineTokenizer.getToken(in);
while (line != null) {
if (line.length() == 0) {
// this should not happen, because the lines are
// returned with the end of line delimiter
out.newLine();
} else {
newline = filters.replaceTokens(line);
out.write(newline);
}
line = lineTokenizer.getToken(in);
}
} finally {
FileUtils.close(out);
FileUtils.close(in);
}
} else if (filterChainsAvailable
|| (inputEncoding != null && !inputEncoding.equals(outputEncoding))
|| (inputEncoding == null && outputEncoding != null)) {
BufferedReader in = null;
BufferedWriter out = null;
try {
InputStreamReader isr = null;
if (inputEncoding == null) {
isr = new InputStreamReader(source.getInputStream());
} else {
isr = new InputStreamReader(source.getInputStream(), inputEncoding);
}
in = new BufferedReader(isr);
OutputStreamWriter osw = null;
if (outputEncoding == null) {
osw = new OutputStreamWriter(dest.getOutputStream());
} else {
osw = new OutputStreamWriter(dest.getOutputStream(), outputEncoding);
}
out = new BufferedWriter(osw);
if (filterChainsAvailable) {
ChainReaderHelper crh = new ChainReaderHelper();
crh.setBufferSize(FileUtils.BUF_SIZE);
crh.setPrimaryReader(in);
crh.setFilterChains(filterChains);
crh.setProject(project);
Reader rdr = crh.getAssembledReader();
in = new BufferedReader(rdr);
}
char[] buffer = new char[FileUtils.BUF_SIZE];
while (true) {
int nRead = in.read(buffer, 0, buffer.length);
if (nRead == -1) {
break;
}
out.write(buffer, 0, nRead);
}
} finally {
FileUtils.close(out);
FileUtils.close(in);
}
} else {
InputStream in = null;
OutputStream out = null;
try {
in = source.getInputStream();
out = dest.getOutputStream();
byte[] buffer = new byte[FileUtils.BUF_SIZE];
int count = 0;
do {
out.write(buffer, 0, count);
count = in.read(buffer, 0, buffer.length);
} while (count != -1);
} finally {
FileUtils.close(out);
FileUtils.close(in);
}
}
if (preserveLastModified && dest instanceof Touchable) {
setLastModified((Touchable) dest, source.getLastModified());
}
}
