diff options
Diffstat (limited to 'RGens/src/main/java')
3 files changed, 117 insertions, 96 deletions
diff --git a/RGens/src/main/java/bjc/RGens/text/markov/StandaloneMarkov.java b/RGens/src/main/java/bjc/RGens/text/markov/StandaloneMarkov.java new file mode 100644 index 0000000..c8670d4 --- /dev/null +++ b/RGens/src/main/java/bjc/RGens/text/markov/StandaloneMarkov.java @@ -0,0 +1,42 @@ +package bjc.RGens.text.markov; + +import java.util.Map; + +public class StandaloneMarkov { + private int k; + + private Map<String, Markov> markovHash; + private String firstSub; + + public StandaloneMarkov(int k, Map<String, Markov> markovHash, + String firstSub) { + this.k = k; + this.markovHash = markovHash; + this.firstSub = firstSub; + } + + public String generateTextFromMarkov(int M) { + StringBuilder text = new StringBuilder(); + for (int i = k; i < M; i++) { + if (i == k) { + text.append(firstSub); + + if (text.length() > k) + i = text.length(); + } + + String sub = text.substring((i - k), (i)); + Markov tmp = markovHash.get(sub); + + if (tmp != null) { + Character nextChar = tmp.random(); + text.append(nextChar); + } else { + i = k - 1; + } + } + + return text.toString(); + } + +} diff --git a/RGens/src/main/java/bjc/RGens/text/markov/StandaloneTextGenerator.java b/RGens/src/main/java/bjc/RGens/text/markov/StandaloneTextGenerator.java new file mode 100644 index 0000000..7e89c27 --- /dev/null +++ b/RGens/src/main/java/bjc/RGens/text/markov/StandaloneTextGenerator.java @@ -0,0 +1,74 @@ +package bjc.RGens.text.markov; + +import java.io.IOException; +import java.io.Reader; +import java.util.HashMap; +import java.util.Map; + +public class StandaloneTextGenerator { + + /** + * Build a markov generator from a provided source + * + * @param k + * @param M + * @param text + * @param reader + * @return The markov generator for the provided text + */ + public static StandaloneMarkov generateMarkovMap(int k, int M, + StringBuilder text, Reader reader) { + Map<String, Markov> hash = new HashMap<>(); + + Character next = null; + + try { + next = (char) reader.read(); + } catch (IOException e1) { + System.out + .println("IOException in stepping through the reader"); + e1.printStackTrace(); + System.exit(1); + } + + StringBuilder origFileBuffer = new StringBuilder(); + + while (next != null && Character.isDefined(next)) { + Character.toString(next); + origFileBuffer.append(next); + + try { + next = (char) reader.read(); + } catch (IOException e) { + System.out.println( + "IOException in stepping through the file"); + e.printStackTrace(); + } + + } + + String origFile = origFileBuffer.toString(); + String firstSub = origFile.substring(0, k); + + for (int i = 0; i < origFile.length() - k; i++) { + String sub = origFile.substring(i, i + k); + Character suffix = origFile.charAt(i + k); + + if (hash.containsKey(sub)) { + Markov marvin = hash.get(sub); + marvin.add(suffix); + hash.put(sub, marvin); + } else { + Markov marvin = new Markov(sub, suffix); + hash.put(sub, marvin); + } + } + + StandaloneMarkov markovGen = new StandaloneMarkov(k, hash, firstSub); + + text.append(markovGen.generateTextFromMarkov(M)); + + return markovGen; + } + +} diff --git a/RGens/src/main/java/bjc/RGens/text/markov/TextGenerator.java b/RGens/src/main/java/bjc/RGens/text/markov/TextGenerator.java index 1a76e86..41a08f0 100755 --- a/RGens/src/main/java/bjc/RGens/text/markov/TextGenerator.java +++ b/RGens/src/main/java/bjc/RGens/text/markov/TextGenerator.java @@ -1,8 +1,6 @@ package bjc.RGens.text.markov; import java.io.*; -import java.util.*; -import java.util.Map.Entry; /** * Generate text from a markov model of an input text @@ -11,7 +9,6 @@ import java.util.Map.Entry; * */ public class TextGenerator { - /** * @param args * when used with three arguments, the first represents the @@ -24,7 +21,6 @@ public class TextGenerator { * the file to be read. The generated text will be the same * number of characters as the original file. */ - @SuppressWarnings("null") public static void main(String[] args) { int k = 0; int M = 0; @@ -52,10 +48,8 @@ public class TextGenerator { System.exit(1); } - Map<String, Markov> hash = null; - try (FileReader reader = new FileReader(file)) { - hash = generateMarkovMap(k, M, text, reader); + StandaloneTextGenerator.generateMarkovMap(k, M, text, reader); } catch (FileNotFoundException e) { System.out.println("File not found."); e.printStackTrace(); @@ -66,96 +60,7 @@ public class TextGenerator { System.exit(1); } - if (hash.size() < 100) { - Iterator<String> keys = hash.keySet().iterator(); - - while (keys.hasNext()) { - String hashKey = keys.next(); - Markov hashValue = hash.get(hashKey); - - System.out.print(hashValue.count() + " " + hashKey + ":"); - - for (Entry<Character, Integer> entry : hashValue.getMap() - .entrySet()) { - char suffix = entry.getKey(); - int frequencyCount = entry.getValue(); - System.out.print(" " + frequencyCount + " " + suffix); - } - - System.out.println(); - } - } - System.out.println( text.toString().substring(0, Math.min(M, text.length()))); } - - private static Map<String, Markov> generateMarkovMap(int k, int M, - StringBuilder text, Reader reader) { - Map<String, Markov> hash = new HashMap<>(); - - Character next = null; - - try { - next = (char) reader.read(); - } catch (IOException e1) { - System.out.println("IOException in stepping through the file"); - e1.printStackTrace(); - System.exit(1); - } - - StringBuilder origFileBuffer = new StringBuilder(); - - while (next != null && Character.isDefined(next)) { - Character.toString(next); - origFileBuffer.append(next); - - try { - next = (char) reader.read(); - } catch (IOException e) { - System.out.println( - "IOException in stepping through the file"); - e.printStackTrace(); - } - - } - - String origFile = origFileBuffer.toString(); - String firstSub = origFile.substring(0, k); - - for (int i = 0; i < origFile.length() - k; i++) { - String sub = origFile.substring(i, i + k); - Character suffix = origFile.charAt(i + k); - - if (hash.containsKey(sub)) { - Markov marvin = hash.get(sub); - marvin.add(suffix); - hash.put(sub, marvin); - } else { - Markov marvin = new Markov(sub, suffix); - hash.put(sub, marvin); - } - } - - for (int i = k; i < M; i++) { - if (i == k) { - text.append(firstSub); - - if (text.length() > k) - i = text.length(); - } - - String sub = text.substring((i - k), (i)); - Markov tmp = hash.get(sub); - - if (tmp != null) { - Character nextChar = tmp.random(); - text.append(nextChar); - } else { - i = k - 1; - } - } - - return hash; - } }
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