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if(!s。startsWith(packMarker))
Pr。error(〃Can't find 〃 + packMarker
+ 〃 in 〃 + s);
s = s。substring(
packMarker。length())。trim();
dirname = s。substring(0; s。indexOf('#'));
filename = s。substring(s。indexOf('#') + 1);
dirname = dirname。replace(
oldsep。charAt(0); filesep。charAt(0));
filename = filename。replace(
oldsep。charAt(0); filesep。charAt(0));
System。out。println(〃l isting: 〃 + dirname
+ filesep + filename);
while((s = pFile。readLine()) != null) {
// Watch for end of code listing:
if(s。startsWith(endMarker) ||
s。startsWith(endMarker2)) {
contents += s;
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break;
}
contents += s + eol;
}
} catch(IOException e) {
System。err。println(〃Error reading line〃);
}
}
public boolean hasFile() {
return filename != null;
}
public String directory() { return dirname; }
public String filename() { return filename; }
public String contents() { return contents; }
// To write to a packed file:
public void writePacked(DataOutputStream out) {
try {
out。writeBytes(
packMarker + dirname + 〃#〃
+ filename + eol);
out。writeBytes(contents);
} catch(IOException e) {
Pr。error(〃writing 〃 + dirname +
filesep + filename);
}
}
// To generate the actual file:
public void writeFile(String rootpath) {
File path = new File(rootpath; dirname);
path。mkdirs();
PrintWriter p =
IO。psOpen(new File(path; filename));
p。print(contents);
IO。close(p);
}
}
class DirMap {
private Hashtable t = new Hashtable();
private String rootpath;
DirMap() {
rootpath = System。getProperty(〃user。dir〃);
}
DirMap(String alternateDir) {
rootpath = alternateDir;
}
public void add(SourceCodeFile f){
String path = f。directory();
if(!t。containsKey(path))
t。put(path; new Vector());
((Vector)t。get(path))。addElement(f);
}
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public void writePackedFile(String fname) {
DataOutputStream packed = IO。dosOpen(fname);
try {
packed。writeBytes(〃###Old Separator:〃 +
SourceCodeFile。filesep + 〃###n〃);
} catch(IOException e) {
Pr。error(〃Writing separator to 〃 + fname);
}
Enumeration e = t。keys();
while(e。hasMoreElements()) {
String dir = (String)e。nextElement();
System。out。println(
〃Writing directory 〃 + dir);
Vector v = (Vector)t。get(dir);
for(int i = 0; i 《 v。size(); i++) {
SourceCodeFile f =
(SourceCodeFile)v。elementAt(i);
f。writePacked(packed);
}
}
IO。close(packed);
}
// Write all the files in their directories:
public void write() {
Enumeration e = t。keys();
while(e。hasMoreElements()) {
String dir = (String)e。nextElement();
Vector v = (Vector)t。get(dir);
for(int i = 0; i 《 v。size(); i++) {
SourceCodeFile f =
(SourceCodeFile)v。elementAt(i);
f。writeFile(rootpath);
}
// Add file indicating file quantity
// written to this directory as a check:
IO。close(IO。dosOpen(
new File(new File(rootpath; dir);
Integer。toString(v。size())+〃。files〃)));
}
}
}
public class CodePackager {
private static final String usageString =
〃usage: java CodePackager packedFileName〃 +
〃nExtracts source code files from packed n〃 +
〃version of Tjava。doc sources into 〃 +
〃directories off current directory n〃 +
〃java CodePackager packedFileName newDirn〃 +
〃Extracts into directories off newDirn〃 +
〃java CodePackager …p source。txt packedFile〃 +
〃nCreates packed version of source files〃 +
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…………………………………………………………Page 630……………………………………………………………
〃nfrom text version of Tjava。doc〃;
private static void usage() {
System。err。println(usageString);
System。exit(1);
}
public static void main(String'' args) {
if(args。length == 0) usage();
if(args'0'。equals(〃…p〃)) {
if(args。length != 3)
usage();
createPackedFile(args);
}
else {
if(args。length 》 2)
usage();
extractPackedFile(args);
}
}
private static String currentLine;
private static BufferedReader in;
private static DirMap dm;
private static void
createPackedFile(String'' args) {
dm = new DirMap();
in = IO。disOpen(args'1');
try {
while((currentLine = in。readLine())
!= null) {
if(currentLine。startsWith(
SourceCodeFile。startMarker)) {
dm。add(new SourceCodeFile(
currentLine; in));
}
else if(currentLine。startsWith(
SourceCodeFile。endMarker))
Pr。error(〃file has no start marker〃);
// Else ignore the input line
}
} catch(IOException e) {
Pr。error(〃Error reading 〃 + args'1');
}
IO。close(in);
dm。writePackedFile(args'2');
}
private static void
extractPackedFile(