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5ede9c8d2e
Arduino/app/Base.java
David Cuartielles e19bbdd548 changed the version number in the code to 3
2006-01-03 14:33:49 +00:00

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/* -*- mode: jde; c-basic-offset: 2; indent-tabs-mode: nil -*- */
/*
Part of the Arduino project - http://arduino.berlios.de
Based on processing http://www.processing.org
Copyright (c) 2004-05 Ben Fry and Casey Reas
Copyright (c) 2001-04 Massachusetts Institute of Technology
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software Foundation,
Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package processing.app;
import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.lang.reflect.*;
import java.net.*;
import java.util.*;
import java.util.zip.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.text.*;
import javax.swing.undo.*;
import com.apple.mrj.*;
import com.ice.jni.registry.*;
/**
* The base class for the main Arduino application.
* <P>
* Primary role of this class is for platform identification and
* general interaction with the system (launching URLs, loading
* files and images, etc) that comes from that.
*/
public class Base {
static final int VERSION = 3;
static final String VERSION_NAME = "0003 Alpha";
static public int platform;
// platform IDs for platform
static final int WINDOWS = 1;
static final int MACOS9 = 2;
static final int MACOSX = 3;
static final int LINUX = 4;
static final int OTHER = 0;
// moved from PApplet
// in preperation of detaching the IDE from the
// Arduino core classes
/**
* Current platform in use.
* <P>
* Equivalent to System.getProperty("os.name"), just used internally.
*/
static public String platformName = System.getProperty("os.name");
static {
// figure out which operating system
// this has to be first, since editor needs to know
if (platformName.toLowerCase().indexOf("mac") != -1) {
// can only check this property if running on a mac
// on a pc it throws a security exception and kills the applet
// (but on the mac it does just fine)
if (System.getProperty("mrj.version") != null) { // running on a mac
platform = (platformName.equals("Mac OS X")) ?
MACOSX : MACOS9;
}
} else {
String osname = System.getProperty("os.name");
if (osname.indexOf("Windows") != -1) {
platform = WINDOWS;
} else if (osname.equals("Linux")) { // true for the ibm vm
platform = LINUX;
} else {
platform = OTHER;
}
}
}
// used by split, all the standard whitespace chars
// (uncludes unicode nbsp, that little bostage)
static final String WHITESPACE = " \t\n\r\f\u00A0";
/**
* Path of filename opened on the command line,
* or via the MRJ open document handler.
*/
static String openedAtStartup;
Editor editor;
static public void main(String args[]) {
// make sure that this is running on java 1.4
//if (PApplet.javaVersion < 1.4f) {
//System.err.println("no way man");
// Base.showError("Need to install Java 1.4",
// "This version of Arduino requires \n" +
// "Java 1.4 or later to run properly.\n" +
// "Please visit java.com to upgrade.", null);
// }
// grab any opened file from the command line
if (args.length == 1) {
Base.openedAtStartup = args[0];
}
// register a temporary/early version of the mrj open document handler,
// because the event may be lost (sometimes, not always) by the time
// that Editor is properly constructed.
MRJOpenDocumentHandler startupOpen = new MRJOpenDocumentHandler() {
public void handleOpenFile(File file) {
// this will only get set once.. later will be handled
// by the Editor version of this fella
if (Base.openedAtStartup == null) {
//System.out.println("handling outside open file: " + file);
Base.openedAtStartup = file.getAbsolutePath();
}
}
};
MRJApplicationUtils.registerOpenDocumentHandler(startupOpen);
Base app = new Base();
}
public Base() {
// set the look and feel before opening the window
try {
if (Base.isLinux()) {
// linux is by default (motif?) even uglier than metal
// actually, i'm using native menus, so they're ugly and
// motif-looking. ick. need to fix this.
UIManager.setLookAndFeel(UIManager.getCrossPlatformLookAndFeelClassName());
} else {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
}
} catch (Exception e) {
e.printStackTrace();
}
// build the editor object
editor = new Editor();
// get things rawkin
editor.pack();
// has to be here to set window size properly
editor.restorePreferences();
// show the window
editor.show();
// check for updates
if (Preferences.getBoolean("update.check")) {
new UpdateCheck(editor);
}
}
// .................................................................
/**
* returns true if the Arduino is running on a Mac OS machine,
* specifically a Mac OS X machine because it doesn't un on OS 9 anymore.
*/
static public boolean isMacOS() {
return platform == MACOSX;
}
/**
* returns true if running on windows.
*/
static public boolean isWindows() {
return platform == WINDOWS;
}
/**
* true if running on linux.
*/
static public boolean isLinux() {
return platform == LINUX;
}
// .................................................................
static final int kDocumentsFolderType =
('d' << 24) | ('o' << 16) | ('c' << 8) | 's';
static final int kPreferencesFolderType =
('p' << 24) | ('r' << 16) | ('e' << 8) | 'f';
static final int kDomainLibraryFolderType =
('d' << 24) | ('l' << 16) | ('i' << 8) | 'b';
static final short kUserDomain = -32763;
static public File getSettingsFolder() {
File dataFolder = null;
String pref = Preferences.get("settings.path");
if (pref != null) {
dataFolder = new File(pref);
} else if (Base.isMacOS()) {
// carbon folder constants
// http://developer.apple.com/documentation/Carbon/Reference
// /Folder_Manager/folder_manager_ref/constant_6.html#/
// /apple_ref/doc/uid/TP30000238/C006889
// additional information found int the local file:
// /System/Library/Frameworks/CoreServices.framework
// /Versions/Current/Frameworks/CarbonCore.framework/Headers/
// this is the 1.4 version.. but using 1.3 since i have the stubs
// import com.apple.eio.*
//println(FileManager.findFolder(kUserDomain,
// kDomainLibraryFolderType));
// not clear if i can write to this folder tho..
try {
/*
if (false) {
// this is because the mrjtoolkit stubs don't have the
// thows exception around them
new FileInputStream("ignored");
}
*/
// this method has to be dynamically loaded, because
MRJOSType domainLibrary = new MRJOSType("dlib");
Method findFolderMethod =
MRJFileUtils.class.getMethod("findFolder",
new Class[] { Short.TYPE,
MRJOSType.class });
File libraryFolder = (File)
findFolderMethod.invoke(null, new Object[] { new Short(kUserDomain),
domainLibrary });
dataFolder = new File(libraryFolder, "Arduino");
} catch (Exception e) {
// this could be FileNotFound or NoSuchMethod
//} catch (FileNotFoundException e) {
//e.printStackTrace();
//System.exit(1);
showError("Problem getting data folder",
"Error getting the Arduino data folder.", e);
}
} else if (Base.isWindows()) {
// looking for Documents and Settings/blah/Application Data/Arduino
// this is just based on the other documentation, and eyeballing
// that part of the registry.. not confirmed by any msft/msdn docs.
// HKEY_CURRENT_USER\Software\Microsoft
// \Windows\CurrentVersion\Explorer\Shell Folders
// Value Name: AppData
// Value Type: REG_SZ
// Value Data: path
try {
//RegistryKey topKey = Registry.getTopLevelKey("HKCU");
RegistryKey topKey = Registry.HKEY_CURRENT_USER;
String localKeyPath =
"Software\\Microsoft\\Windows\\CurrentVersion" +
"\\Explorer\\Shell Folders";
RegistryKey localKey = topKey.openSubKey(localKeyPath);
String appDataPath = cleanKey(localKey.getStringValue("AppData"));
//System.out.println("app data path is " + appDataPath);
//System.exit(0);
//topKey.closeKey(); // necessary?
//localKey.closeKey();
dataFolder = new File(appDataPath, "Arduino");
} catch (Exception e) {
showError("Problem getting data folder",
"Error getting the Arduino data folder.", e);
}
//return null;
} else {
// otherwise make a .arduino directory int the user's home dir
File home = new File(System.getProperty("user.home"));
dataFolder = new File(home, ".arduino");
}
// create the folder if it doesn't exist already
boolean result = true;
if (!dataFolder.exists()) {
result = dataFolder.mkdirs();
}
if (!result) {
// try the fallback location
System.out.println("Using fallback path for settings.");
String fallback = Preferences.get("settings.path.fallback");
dataFolder = new File(fallback);
if (!dataFolder.exists()) {
result = dataFolder.mkdirs();
}
}
if (!result) {
showError("Settings issues",
"Arduino cannot run because it could not\n" +
"create a folder to store your settings.", null);
}
return dataFolder;
}
static public File getSettingsFile(String filename) {
return new File(getSettingsFolder(), filename);
}
static public File getBuildFolder() {
String buildPath = Preferences.get("build.path");
if (buildPath != null) return new File(buildPath);
File folder = new File(getTempFolder(), "build");
if (!folder.exists()) folder.mkdirs();
return folder;
}
/**
* Get the path to the platform's temporary folder, by creating
* a temporary temporary file and getting its parent folder.
*/
static public File getTempFolder() {
try {
File ignored = File.createTempFile("ignored", null);
String tempPath = ignored.getParent();
ignored.delete();
return new File(tempPath);
} catch (Exception e) {
e.printStackTrace();
}
return null; // TODO could we *really* ever reach this?
}
/*
static public void addBuildFolderToClassPath() {
String path = getBuildFolder().getAbsolutePath();
String jcp = System.getProperty("java.class.path");
if (jcp.indexOf(path) == -1) {
System.setProperty("java.class.path", path + File.pathSeparator + jcp);
//return new File(getProcessingDataFolder(), "build");
System.out.println("jcp is now " +
System.getProperty("java.class.path"));
}
}
*/
static public File getDefaultSketchbookFolder() {
File sketchbookFolder = null;
if (Base.isMacOS()) {
// looking for /Users/blah/Documents/Arduino
// carbon folder constants
// http://developer.apple.com/documentation/Carbon/Reference/Folder_Manager/folder_manager_ref/constant_6.html#//apple_ref/doc/uid/TP30000238/C006889
// additional information found int the local file:
// /System/Library/Frameworks/CoreServices.framework/Versions/Current/Frameworks/CarbonCore.framework/Headers/
// this is the 1.4 version.. but using 1.3 since i have the stubs
// import com.apple.eio.*
//println(FileManager.findFolder(kUserDomain,
// kDomainLibraryFolderType));
// not clear if i can write to this folder tho..
try {
MRJOSType domainDocuments = new MRJOSType("docs");
//File libraryFolder = MRJFileUtils.findFolder(domainDocuments);
// for 77, try switching this to the user domain, just to be sure
Method findFolderMethod =
MRJFileUtils.class.getMethod("findFolder",
new Class[] { Short.TYPE,
MRJOSType.class });
File documentsFolder = (File)
findFolderMethod.invoke(null, new Object[] { new Short(kUserDomain),
domainDocuments });
sketchbookFolder = new File(documentsFolder, "Arduino");
} catch (Exception e) {
showError("sketch folder problem",
"Could not locate default sketch folder location.", e);
}
} else if (isWindows()) {
// looking for Documents and Settings/blah/My Documents/Arduino
// (though using a reg key since it's different on other platforms)
// http://support.microsoft.com/?kbid=221837&sd=RMVP
// The path to the My Documents folder is stored in the
// following registry key, where path is the complete path
// to your storage location:
// HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders
// Value Name: Personal
// Value Type: REG_SZ
// Value Data: path
try {
RegistryKey topKey = Registry.HKEY_CURRENT_USER;
String localKeyPath =
"Software\\Microsoft\\Windows\\CurrentVersion" +
"\\Explorer\\Shell Folders";
RegistryKey localKey = topKey.openSubKey(localKeyPath);
String personalPath = cleanKey(localKey.getStringValue("Personal"));
//topKey.closeKey(); // necessary?
//localKey.closeKey();
sketchbookFolder = new File(personalPath, "Arduino");
} catch (Exception e) {
showError("Problem getting documents folder",
"Error getting the Arduino sketchbook folder.", e);
}
} else {
// on linux (or elsewhere?) prompt the user for the location
JFileChooser fc = new JFileChooser();
fc.setDialogTitle("Select the folder where " +
"Arduino programs should be stored...");
//fc.setSelectedFile(new File(sketchbookLocationField.getText()));
fc.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);
int returned = fc.showOpenDialog(new JDialog());
if (returned == JFileChooser.APPROVE_OPTION) {
//File file = fc.getSelectedFile();
//sketchbookLocationField.setText(file.getAbsolutePath());
sketchbookFolder = fc.getSelectedFile();
} else {
System.exit(0);
}
}
// create the folder if it doesn't exist already
boolean result = true;
if (!sketchbookFolder.exists()) {
result = sketchbookFolder.mkdirs();
}
if (!result) {
// try the fallback location
System.out.println("Using fallback path for sketchbook.");
String fallback = Preferences.get("sketchbook.path.fallback");
sketchbookFolder = new File(fallback);
if (!sketchbookFolder.exists()) {
result = sketchbookFolder.mkdirs();
}
}
if (!result) {
showError("error",
"Arduino cannot run because it could not\n" +
"create a folder to store your sketchbook.", null);
}
return sketchbookFolder;
}
static public String cleanKey(String what) {
// jnireg seems to be reading the chars as bytes
// so maybe be as simple as & 0xff and then running through decoder
char c[] = what.toCharArray();
// if chars are in the tooHigh range, it's prolly because
// a byte from the jni registry was turned into a char
// and there was a sign extension.
// e.g. 0xFC (252, umlaut u) became 0xFFFC (65532).
// but on a japanese system, maybe this is two-byte and ok?
int tooHigh = 65536 - 128;
for (int i = 0; i < c.length; i++) {
if (c[i] >= tooHigh) c[i] &= 0xff;
/*
if ((c[i] >= 32) && (c[i] < 128)) {
System.out.print(c[i]);
} else {
System.out.print("[" + PApplet.hex(c[i]) + "]");
}
*/
}
//System.out.println();
return new String(c);
}
// .................................................................
/**
* Given the reference filename from the keywords list,
* builds a URL and passes it to openURL.
*/
static public void showReference(String referenceFile) {
String currentDir = System.getProperty("user.dir");
openURL(currentDir + File.separator +
"reference" + File.separator +
referenceFile + ".html");
}
/**
* Implements the cross-platform headache of opening URLs
*/
static public void openURL(String url) {
//System.out.println("opening url " + url);
try {
if (Base.isWindows()) {
// this is not guaranteed to work, because who knows if the
// path will always be c:\progra~1 et al. also if the user has
// a different browser set as their default (which would
// include me) it'd be annoying to be dropped into ie.
//Runtime.getRuntime().exec("c:\\progra~1\\intern~1\\iexplore "
// + currentDir
// the following uses a shell execute to launch the .html file
// note that under cygwin, the .html files have to be chmodded +x
// after they're unpacked from the zip file. i don't know why,
// and don't understand what this does in terms of windows
// permissions. without the chmod, the command prompt says
// "Access is denied" in both cygwin and the "dos" prompt.
//Runtime.getRuntime().exec("cmd /c " + currentDir + "\\reference\\" +
// referenceFile + ".html");
if (url.startsWith("http://")) {
// open dos prompt, give it 'start' command, which will
// open the url properly. start by itself won't work since
// it appears to need cmd
Runtime.getRuntime().exec("cmd /c start " + url);
} else {
// just launching the .html file via the shell works
// but make sure to chmod +x the .html files first
// also place quotes around it in case there's a space
// in the user.dir part of the url
Runtime.getRuntime().exec("cmd /c \"" + url + "\"");
}
} else if (Base.isMacOS()) {
//com.apple.eio.FileManager.openURL(url);
if (!url.startsWith("http://")) {
// prepend file:// on this guy since it's a file
url = "file://" + url;
// replace spaces with %20 for the file url
// otherwise the mac doesn't like to open it
// can't just use URLEncoder, since that makes slashes into
// %2F characters, which is no good. some might say "useless"
if (url.indexOf(' ') != -1) {
StringBuffer sb = new StringBuffer();
char c[] = url.toCharArray();
for (int i = 0; i < c.length; i++) {
if (c[i] == ' ') {
sb.append("%20");
} else {
sb.append(c[i]);
}
}
url = sb.toString();
}
}
com.apple.mrj.MRJFileUtils.openURL(url);
} else if (Base.isLinux()) {
// how's mozilla sound to ya, laddie?
//Runtime.getRuntime().exec(new String[] { "mozilla", url });
String browser = Preferences.get("browser");
Runtime.getRuntime().exec(new String[] { browser, url });
} else {
System.err.println("unspecified platform");
}
} catch (IOException e) {
Base.showWarning("Could not open URL",
"An error occurred while trying to open\n" + url, e);
}
}
/**
* Implements the other cross-platform headache of opening
* a folder in the machine's native file browser.
*/
static public void openFolder(File file) {
try {
String folder = file.getAbsolutePath();
if (Base.isWindows()) {
// doesn't work
//Runtime.getRuntime().exec("cmd /c \"" + folder + "\"");
// works fine on winxp, prolly win2k as well
Runtime.getRuntime().exec("explorer \"" + folder + "\"");
// not tested
//Runtime.getRuntime().exec("start explorer \"" + folder + "\"");
} else if (Base.isMacOS()) {
openURL(folder); // handles char replacement, etc
}
} catch (IOException e) {
e.printStackTrace();
}
}
/**
* "No cookie for you" type messages. Nothing fatal or all that
* much of a bummer, but something to notify the user about.
*/
static public void showMessage(String title, String message) {
if (title == null) title = "Message";
JOptionPane.showMessageDialog(new Frame(), message, title,
JOptionPane.INFORMATION_MESSAGE);
}
/**
* Non-fatal error message with optional stack trace side dish.
*/
static public void showWarning(String title, String message,
Exception e) {
if (title == null) title = "Warning";
JOptionPane.showMessageDialog(new Frame(), message, title,
JOptionPane.WARNING_MESSAGE);
//System.err.println(e.toString());
if (e != null) e.printStackTrace();
}
/**
* Show an error message that's actually fatal to the program.
* This is an error that can't be recovered. Use showWarning()
* for errors that allow P5 to continue running.
*/
static public void showError(String title, String message,
Exception e) {
if (title == null) title = "Error";
JOptionPane.showMessageDialog(new Frame(), message, title,
JOptionPane.ERROR_MESSAGE);
if (e != null) e.printStackTrace();
System.exit(1);
}
// ...................................................................
static public Image getImage(String name, Component who) {
Image image = null;
Toolkit tk = Toolkit.getDefaultToolkit();
//if ((Base.platform == Base.MACOSX) ||
//(Base.platform == Base.MACOS9)) {
image = tk.getImage("lib/" + name);
//} else {
//image = tk.getImage(who.getClass().getResource(name));
//}
//image = tk.getImage("lib/" + name);
//URL url = PdeApplet.class.getResource(name);
//image = tk.getImage(url);
//}
//MediaTracker tracker = new MediaTracker(applet);
MediaTracker tracker = new MediaTracker(who); //frame);
tracker.addImage(image, 0);
try {
tracker.waitForAll();
} catch (InterruptedException e) { }
return image;
}
static public InputStream getStream(String filename) throws IOException {
//if (Base.platform == Base.MACOSX) {
// macos doesn't seem to think that files in the lib folder
// are part of the resources, unlike windows or linux.
// actually, this is only the case when running as a .app,
// since it works fine from run.sh, but not Arduino.app
return new FileInputStream("lib/" + filename);
//}
// all other, more reasonable operating systems
//return cls.getResource(filename).openStream();
//return Base.class.getResource(filename).openStream();
}
// ...................................................................
static public byte[] grabFile(File file) throws IOException {
int size = (int) file.length();
FileInputStream input = new FileInputStream(file);
byte buffer[] = new byte[size];
int offset = 0;
int bytesRead;
while ((bytesRead = input.read(buffer, offset, size-offset)) != -1) {
offset += bytesRead;
if (bytesRead == 0) break;
}
input.close(); // weren't properly being closed
input = null;
return buffer;
}
static public void copyFile(File afile, File bfile) throws IOException {
InputStream from = new BufferedInputStream(new FileInputStream(afile));
OutputStream to = new BufferedOutputStream(new FileOutputStream(bfile));
byte[] buffer = new byte[16 * 1024];
int bytesRead;
while ((bytesRead = from.read(buffer)) != -1) {
to.write(buffer, 0, bytesRead);
}
to.flush();
from.close(); // ??
from = null;
to.close(); // ??
to = null;
bfile.setLastModified(afile.lastModified()); // jdk13+ required
//} catch (IOException e) {
// e.printStackTrace();
//}
}
/**
* Grab the contents of a file as a string.
*/
static public String loadFile(File file) throws IOException {
// empty code file.. no worries, might be getting filled up later
if (file.length() == 0) return "";
InputStreamReader isr = new InputStreamReader(new FileInputStream(file));
BufferedReader reader = new BufferedReader(isr);
StringBuffer buffer = new StringBuffer();
String line = null;
while ((line = reader.readLine()) != null) {
buffer.append(line);
buffer.append('\n');
}
reader.close();
return buffer.toString();
}
/**
* Spew the contents of a String object out to a file.
*/
static public void saveFile(String str,
File file) throws IOException {
ByteArrayInputStream bis = new ByteArrayInputStream(str.getBytes());
InputStreamReader isr = new InputStreamReader(bis);
BufferedReader reader = new BufferedReader(isr);
FileWriter fw = new FileWriter(file);
PrintWriter writer = new PrintWriter(new BufferedWriter(fw));
String line = null;
while ((line = reader.readLine()) != null) {
writer.println(line);
}
writer.flush();
writer.close();
}
static public void copyDir(File sourceDir,
File targetDir) throws IOException {
targetDir.mkdirs();
String files[] = sourceDir.list();
for (int i = 0; i < files.length; i++) {
if (files[i].equals(".") || files[i].equals("..")) continue;
File source = new File(sourceDir, files[i]);
File target = new File(targetDir, files[i]);
if (source.isDirectory()) {
//target.mkdirs();
copyDir(source, target);
target.setLastModified(source.lastModified());
} else {
copyFile(source, target);
}
}
}
/**
* Remove all files in a directory and the directory itself.
*/
static public void removeDir(File dir) {
if (dir.exists()) {
removeDescendants(dir);
dir.delete();
}
}
/**
* Recursively remove all files within a directory,
* used with removeDir(), or when the contents of a dir
* should be removed, but not the directory itself.
* (i.e. when cleaning temp files from lib/build)
*/
static public void removeDescendants(File dir) {
if (!dir.exists()) return;
String files[] = dir.list();
for (int i = 0; i < files.length; i++) {
if (files[i].equals(".") || files[i].equals("..")) continue;
File dead = new File(dir, files[i]);
if (!dead.isDirectory()) {
if (!Preferences.getBoolean("compiler.save_build_files")) {
if (!dead.delete()) {
// temporarily disabled
//System.err.println("couldn't delete " + dead);
}
}
} else {
removeDir(dead);
//dead.delete();
}
}
}
/**
* Calculate the size of the contents of a folder.
* Used to determine whether sketches are empty or not.
* Note that the function calls itself recursively.
*/
static public int calcFolderSize(File folder) {
int size = 0;
String files[] = folder.list();
// null if folder doesn't exist, happens when deleting sketch
if (files == null) return -1;
for (int i = 0; i < files.length; i++) {
if (files[i].equals(".") || (files[i].equals("..")) ||
files[i].equals(".DS_Store")) continue;
File fella = new File(folder, files[i]);
if (fella.isDirectory()) {
size += calcFolderSize(fella);
} else {
size += (int) fella.length();
}
}
return size;
}
/**
* Equivalent to the one in PApplet, but static (die() is removed)
*/
static public String[] loadStrings(File file) {
try {
FileInputStream input = new FileInputStream(file);
BufferedReader reader =
new BufferedReader(new InputStreamReader(input));
String lines[] = new String[100];
int lineCount = 0;
String line = null;
while ((line = reader.readLine()) != null) {
if (lineCount == lines.length) {
String temp[] = new String[lineCount << 1];
System.arraycopy(lines, 0, temp, 0, lineCount);
lines = temp;
}
lines[lineCount++] = line;
}
reader.close();
if (lineCount == lines.length) {
return lines;
}
// resize array to appropraite amount for these lines
String output[] = new String[lineCount];
System.arraycopy(lines, 0, output, 0, lineCount);
return output;
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
//////////////////////////////////////////////////////////////
// STRINGS
/**
* Remove whitespace characters from the beginning and ending
* of a String. Works like String.trim() but includes the
* unicode nbsp character as well.
*/
static public String trim(String str) {
return str.replace('\u00A0', ' ').trim();
/*
int left = 0;
int right = str.length() - 1;
while ((left <= right) &&
(WHITESPACE.indexOf(str.charAt(left)) != -1)) left++;
if (left == right) return "";
while (WHITESPACE.indexOf(str.charAt(right)) != -1) --right;
return str.substring(left, right-left+1);
*/
}
/**
* Join an array of Strings together as a single String,
* separated by the whatever's passed in for the separator.
*/
static public String join(String str[], char separator) {
return join(str, String.valueOf(separator));
}
/**
* Join an array of Strings together as a single String,
* separated by the whatever's passed in for the separator.
* <P>
* To use this on numbers, first pass the array to nf() or nfs()
* to get a list of String objects, then use join on that.
* <PRE>
* e.g. String stuff[] = { "apple", "bear", "cat" };
* String list = join(stuff, ", ");
* // list is now "apple, bear, cat"</PRE>
*/
static public String join(String str[], String separator) {
StringBuffer buffer = new StringBuffer();
for (int i = 0; i < str.length; i++) {
if (i != 0) buffer.append(separator);
buffer.append(str[i]);
}
return buffer.toString();
}
/**
* Split the provided String at wherever whitespace occurs.
* Multiple whitespace (extra spaces or tabs or whatever)
* between items will count as a single break.
* <P>
* The whitespace characters are "\t\n\r\f", which are the defaults
* for java.util.StringTokenizer, plus the unicode non-breaking space
* character, which is found commonly on files created by or used
* in conjunction with Mac OS X (character 160, or 0x00A0 in hex).
* <PRE>
* i.e. split("a b") -> { "a", "b" }
* split("a b") -> { "a", "b" }
* split("a\tb") -> { "a", "b" }
* split("a \t b ") -> { "a", "b" }</PRE>
*/
static public String[] split(String what) {
return split(what, WHITESPACE);
}
/**
* Splits a string into pieces, using any of the chars in the
* String 'delim' as separator characters. For instance,
* in addition to white space, you might want to treat commas
* as a separator. The delimeter characters won't appear in
* the returned String array.
* <PRE>
* i.e. split("a, b", " ,") -> { "a", "b" }
* </PRE>
* To include all the whitespace possibilities, use the variable
* WHITESPACE, found in PConstants:
* <PRE>
* i.e. split("a | b", WHITESPACE + "|"); -> { "a", "b" }</PRE>
*/
static public String[] split(String what, String delim) {
StringTokenizer toker = new StringTokenizer(what, delim);
String pieces[] = new String[toker.countTokens()];
int index = 0;
while (toker.hasMoreTokens()) {
pieces[index++] = toker.nextToken();
}
return pieces;
}
/**
* Split a string into pieces along a specific character.
* Most commonly used to break up a String along tab characters.
* <P>
* This operates differently than the others, where the
* single delimeter is the only breaking point, and consecutive
* delimeters will produce an empty string (""). This way,
* one can split on tab characters, but maintain the column
* alignments (of say an excel file) where there are empty columns.
*/
static public String[] split(String what, char delim) {
// do this so that the exception occurs inside the user's
// program, rather than appearing to be a bug inside split()
if (what == null) return null;
//return split(what, String.valueOf(delim)); // huh
char chars[] = what.toCharArray();
int splitCount = 0; //1;
for (int i = 0; i < chars.length; i++) {
if (chars[i] == delim) splitCount++;
}
// make sure that there is something in the input string
//if (chars.length > 0) {
// if the last char is a delimeter, get rid of it..
//if (chars[chars.length-1] == delim) splitCount--;
// on second thought, i don't agree with this, will disable
//}
if (splitCount == 0) {
String splits[] = new String[1];
splits[0] = new String(what);
return splits;
}
//int pieceCount = splitCount + 1;
String splits[] = new String[splitCount + 1];
int splitIndex = 0;
int startIndex = 0;
for (int i = 0; i < chars.length; i++) {
if (chars[i] == delim) {
splits[splitIndex++] =
new String(chars, startIndex, i-startIndex);
startIndex = i + 1;
}
}
//if (startIndex != chars.length) {
splits[splitIndex] =
new String(chars, startIndex, chars.length-startIndex);
//}
return splits;
}
}
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