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package xtpipes;
/*
FileInfo.java (2009-01-27-22:19)
*/
import java.io.File;
import java.io.PrintWriter;
public class FileInfo{
static String [] classPaths = null;
static String [] scriptPaths = null;
static java.util.HashMap <String,String> registry =
new java.util.HashMap <String,String>();
static String slash = System.getProperty("file.separator");
static String ii_scriptDir;
static PrintWriter log;
static boolean trace;
public FileInfo(PrintWriter log, String iii_scriptDir, boolean trace){
FileInfo.log = log;
FileInfo.ii_scriptDir = iii_scriptDir;
FileInfo.trace = trace;
classPaths = FileInfo.getPaths( System.getProperty("java.class.path") );
if( iii_scriptDir != null ){
scriptPaths = FileInfo.getPaths( iii_scriptDir );
}
}
public static String searchFile( String file ){
String key = ((ii_scriptDir == null)? "" : ii_scriptDir )
+ "!" + file;
String result = (String) registry.get( key );
if( result == null ){
for(int i=0; i<2; i++){
if( trace ){
log.println( "Searching: " + file );
}
if( (new File(file)).exists() ){
result = ( file.indexOf(slash) == -1 )?
(System.getProperty("user.dir") + slash + file)
:
file;
}
else {
if( ii_scriptDir != null ){
int k = scriptPaths.length;
while( k>0 ){
k--;
if( trace ){
log.println( "Searching: " + file
+ ", recursively in directory: " + scriptPaths[k] );
}
result = searchDirectory( new File(scriptPaths[k]), file);
if( result != null ){ break; }
}
String s = ii_scriptDir + file;
if( (new File( s )).exists() ){ result = s; }
}
if( result == null ){
int k = classPaths.length;
String toFile = "xtpipes" + slash + "lib" + slash + file;
while( k>0 ){
k--;
String s = classPaths[k] + toFile;
if( trace ){ log.println( "Searching: " + s ); }
if( new File(s).exists() ){ result = s; break; }
}
} }
if( result != null ){ break; }
file = new File(file).getName();
}
if( result != null ){
result = FileInfo.cleanPath(result);
registry.put(key, result);
}
}
if( trace ){
if( result == null ){
log.println(
"Directory paths from xtpipes command line option -i: "
+ ii_scriptDir );
} else { log.println( "Found: " + result + "\n" ); }
log.flush();
}
return result;
}
static String [] getPaths( String dirs ){
String [] paths = null;
paths = dirs.split( System.getProperty("path.separator") );
int k = paths.length;
while( k>0 ){
k--;
paths[k] = cleanPath( paths[k] );
int len = paths[k].length();
if( (len>1) && (paths[k].lastIndexOf(slash + ".") == (len-1)) ){
paths[k] = paths[k].substring(0,len-1);
} else if( (len>0) && ((len-1) != paths[k].lastIndexOf( slash )) ){
paths[k] += slash;
} }
return paths;
}
public static String cleanPath( String path ){
String slash = System.getProperty("file.separator");
String userDir = System.getProperty( "user.dir" );
if( (path.length() > 0) && (path.charAt(0) == '~') ){
if( (path.length() == 1) || (path.charAt(1) != '~') ){
path = System.getProperty( "user.home" )
+ path.substring(1);
} }
if( path.startsWith("..") ){
path = userDir.substring(0,
Math.max(0,Math.max(
userDir.lastIndexOf("/")
,
userDir.lastIndexOf("\\")
)))
+ path.substring(2);
}
if( path.startsWith(".") ){
path = userDir + slash + path.substring(1);
}
int i;
while(
((i=path.indexOf("/..")) != -1)
||
((i=path.indexOf("\\..")) != -1)
){
String s = path.substring(0,i);
int j = Math.max(s.lastIndexOf("/"), s.lastIndexOf("\\"));
path = path.substring(0,j) + path.substring(i+3);
}
while(
((i=path.indexOf("/.")) != -1)
||
((i=path.indexOf("\\.")) != -1)
){
String s = path.substring(0,i);
int j = Math.max(s.indexOf("/"), s.indexOf("\\"));
path = path.substring(0,j) + path.substring(i+2);
}
return path;
}
static String searchDirectory(File dir, String file) {
String result = null;
if( dir.isDirectory() ){
String [] children = dir.list();
for (int i=0; i<children.length; i++) {
result = searchDirectory( new File(dir,children[i]), file);
if( result != null ) { break; }
}
} else {
String s = dir.toString();
if( s.equals(file) || s.endsWith(slash + file) ){
result = s;
}
}
return result;
}
}
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