Jwc

//by pm_kirkham import java.io.*; public final class Jwc {         public static void main(final String[] args) throws Exception {            final long  starttime = System.currentTimeMillis();        for (String arg : args)         worker.processFile(arg);                   final long  stoptime = System.currentTimeMillis();        worker.printResults(args.length > 0);        System.out.println("Time " + (stoptime - starttime) + " ms");  } //end of main   final static Jwc worker = new Jwc ();    int   totalWords = 0;  int   totalLines = 0;  int   totalBytes = 0;  int   dictionaryCount = 0;    // will fail with files with too many distinct words  // just increase the index size in that case  int[] dictionaryData = new int[4096 * 3072];  int   dictionaries = 0;    void processFile (String arg) throws Exception {     File file = new File(arg);       if (!file.isFile())  return;     final int numBytes = (int) file.length();     FileInputStream in = new FileInputStream(arg);     // index of start of current dictionary    int dindex = 0;        // buffered read:    final byte[] buf = new byte[4096];     for (int bytesLeft = numBytes; bytesLeft > 0; bytesLeft-=4096)       dindex = processChunk(buf, in.read(buf, 0, 4096), dindex);         totalBytes += numBytes;  }    void printResults (boolean dump) {    System.out.println("Lines\tWords\tBytes");    System.out.println("---------------------------------------");    System.out.println(totalLines + "\t" + totalWords + "\t" + totalBytes + "\tTotal");    System.out.println("---------------------------------------");      if (dump)       dumpDictionary(0, new char[1024], 0);        System.out.println("dictionaryCount: " + dictionaryCount);  }    int processChunk (byte[] buf, int len, int dindex) {    int numLines = 0;    int numWords = 0;    final int[] dictionaryData = this.dictionaryData;    int dictionaryCount = this.dictionaryCount;        for (int j = 0; j < len; ++j) {       int c = buf[j];       if (c >= 'a' && c <= 'z' || c >= 'A' && c <= 'Z') {                final int index = ((c - 'A')) + dindex;                dindex = dictionaryData[index];                if (dindex == 0)          dindex = dictionaryData[index] = (++dictionaryCount)*58;      } else {        if (c == '\n')          numLines++;                if (dindex != 0) {          numWords++;          dictionaryData[dindex + 26]++;          dindex = 0;        }      }    }          totalLines += numLines;    totalWords += numWords;        this.dictionaryCount = dictionaryCount;    return dindex;  }   void dumpDictionary (int dindex, char[] buf, int buflen) {    if (dictionaryData[dindex + 26] != 0)      System.out.println(dictionaryData[dindex + 26] + "\t" + new String(buf, 0, buflen));        for (int i = 0; i < 64; ++i) {      if ((dictionaryData[dindex + i] != 0) && (i != 26)) {        buf[buflen] = (char)('A' + (i));        dumpDictionary(dictionaryData[dindex + i], buf, buflen + 1);      }    }  }}