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package ij.plugin;
import java.awt.*;
import java.awt.image.*;
import java.io.*;
import ij.*;
import ij.io.*;
import ij.process.*;
import ij.util.Tools;
import ij.plugin.frame.Recorder;
/** This plugin opens a tab or comma delimeted text file as an image.
Modified to accept commas as delimiters on 4/22/08 by
Jay Unruh, Stowers Institute for Medical Research. */
public class TextReader implements PlugIn {
int words = 0, chars = 0, lines = 0, width=1;;
String directory, name, path;
boolean hideErrorMessages;
String firstTok;
public void run(String arg) {
if (showDialog()) {
IJ.showStatus("Opening: " + path);
ImageProcessor ip = open(path);
if (ip!=null)
new ImagePlus(name, ip).show();
if (Recorder.record && Recorder.scriptMode())
Recorder.recordCall("imp = IJ.openImage(\""+path+"\");");
}
}
boolean showDialog() {
OpenDialog od = new OpenDialog("Open Text Image...", null);
directory = od.getDirectory();
name = od.getFileName();
if (name!=null)
path = directory + name;
return name!=null;
}
/** Displays a file open dialog and opens the specified text file as a float image. */
public ImageProcessor open() {
if (showDialog())
return open(path);
else
return null;
}
/** Opens the specified text file as a float image. */
public ImageProcessor open(String path) {
ImageProcessor ip = null;
try {
words = chars = lines = 0;
Reader r = new BufferedReader(new FileReader(path));
countLines(r);
r.close();
r = new BufferedReader(new FileReader(path));
//int width = words/lines;
if (width*lines==0)
return null;
float[] pixels = new float[width*lines];
ip = new FloatProcessor(width, lines, pixels, null);
read(r, width*lines, pixels);
r.close();
int firstRowNaNCount = 0;
for (int i=0; i<width; i++) {
if (i<pixels.length && Float.isNaN(pixels[i]))
firstRowNaNCount++;
}
if (firstRowNaNCount==width && !("NaN".equals(firstTok)||"nan".equals(firstTok))) { // assume first row is header
ip.setRoi(0, 1, width, lines-1);
ip = ip.crop();
}
ip.resetMinAndMax();
}
catch (IOException e) {
String msg = e.getMessage();
if (msg==null || msg.equals(""))
msg = ""+e;
IJ.showProgress(1.0);
if (!hideErrorMessages)
IJ.error("Text Reader", msg);
ip = null;
}
return ip;
}
public void hideErrorMessages() {
hideErrorMessages = true;
}
/** Returns the file name. */
public String getName() {
return name;
}
void countLines(Reader r) throws IOException {
StreamTokenizer tok = new StreamTokenizer(r);
int wordsPerLine=0, wordsInPreviousLine=0;
tok.resetSyntax();
tok.wordChars(43, 43);
tok.wordChars(45, 127);
tok.whitespaceChars(0, 42);
tok.whitespaceChars(44, 44);
//tok.wordChars(33, 127);
//tok.whitespaceChars(0, ' ');
tok.whitespaceChars(128, 255);
tok.eolIsSignificant(true);
while (tok.nextToken() != StreamTokenizer.TT_EOF) {
switch (tok.ttype) {
case StreamTokenizer.TT_EOL:
lines++;
if (wordsPerLine==0)
lines--; // ignore empty lines
if (lines==1 && wordsPerLine>0)
width = wordsPerLine;
if (lines>1 && wordsPerLine!=0 && wordsPerLine!=wordsInPreviousLine)
throw new IOException("Line "+lines+ " is not the same length as the first line.");
if (wordsPerLine!=0)
wordsInPreviousLine = wordsPerLine;
wordsPerLine = 0;
if (lines%20==0 && width>1 && lines<=width)
IJ.showProgress(((double)lines/width)/2.0);
break;
case StreamTokenizer.TT_WORD:
words++;
wordsPerLine++;
break;
}
}
if (wordsPerLine==width)
lines++; // last line does not end with EOL
}
void read(Reader r, int size, float[] pixels) throws IOException {
StreamTokenizer tok = new StreamTokenizer(r);
tok.resetSyntax();
tok.wordChars(43, 43);
tok.wordChars(45, 127);
tok.whitespaceChars(0, 42);
tok.whitespaceChars(44, 44);
//tok.wordChars(33, 127);
//tok.whitespaceChars(0, ' ');
tok.whitespaceChars(128, 255);
//tok.parseNumbers();
int i = 0;
int inc = size/20;
if (inc<1)
inc = 1;
while (tok.nextToken() != StreamTokenizer.TT_EOF) {
if (tok.ttype==StreamTokenizer.TT_WORD) {
if (i==0)
firstTok = tok.sval;
pixels[i++] = (float)Tools.parseDouble(tok.sval, Double.NaN);
if (i==size)
break;
if (i%inc==0)
IJ.showProgress(0.5+((double)i/size)/2.0);
}
}
IJ.showProgress(1.0);
}
}
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