X-Git-Url: http://source.jalview.org/gitweb/?a=blobdiff_plain;f=src%2Fcom%2Fstevesoft%2Fpat%2FReplacer.java;h=062a548eab323e5a985675f7302edc24cfafc1ae;hb=506d60f0e188723ddc91c26824b41ac7034df3fe;hp=c78a11dd8c1cd40a18abbd019002e53831a1a3e8;hpb=c40cf903f740a72ab63dd1abc10fa33450ce660d;p=jalview.git

diff --git a/src/com/stevesoft/pat/Replacer.java b/src/com/stevesoft/pat/Replacer.java
index c78a11d..062a548 100755
--- a/src/com/stevesoft/pat/Replacer.java
+++ b/src/com/stevesoft/pat/Replacer.java
@@ -1,261 +1,367 @@
-//
-// This software is now distributed according to
-// the Lesser Gnu Public License.  Please see
-// http://www.gnu.org/copyleft/lesser.txt for
-// the details.
-//    -- Happy Computing!
-//
-package com.stevesoft.pat;
-
-import java.util.*;
-import com.stevesoft.pat.wrap.StringWrap;
-
-/** Internally used class. */
-class RegHolder {
-    Regex me = null;
-    RegHolder prev = null;
-}
-
-/** Internally used class.
-  * @see CodeRule
-  */
-class CodeVal {
-    int pos;
-    char code;
-    CodeVal(int p,char c) {
-        pos = p;
-        code = c;
-    }
-    public String toString() {
-        return "("+pos+","+code+")";
-    }
-}
-
-/**
-  To use this class, first use either the getReplacer() method from
-  Transformer or Regex.  You can then use replaceAll, replaceFirst,
-  etc. methods on the Replacer in the same way that you can from
-  either of those two classes.
-  <p>
-  The only potential difference between using the methods of
-  Replacer to do the replacing is that Replacer remembers changes
-  to the replacing object between calls to replaceAll, replaceFirst
-  etc.  For details, see the example file
-  <a href="http://javaregex.com/code/trans3.java.html">trans3.java</a>.
-  @see com.stevesoft.pat.Transformer
-  @see com.stevesoft.pat.Regex
-*/
-public class Replacer {
-    boolean first;
-
-    /** Instantiate a new Replacer. */
-    public Replacer() {}
-
-    public StringLike replaceFirstRegion(String s,Regex r,
-        int start,int end) {
-        return replaceFirstRegion(new StringWrap(s),r,start,end);
-    }
-    /** This method replaces the first occurence of the Regex in the
-        String starting with position pos
-        according to the Replacer rule of this object. */
-    public StringLike replaceFirstRegion(StringLike s,Regex r,
-        int start,int end) {
-        first = true;
-        rh.me = r;
-        rh.prev = null;
-        return dorep(s,start,end);
-    }
-    public StringLike replaceFirst(StringLike s) {
-        return replaceFirstRegion(s,0,s.length());
-    }
-    public StringLike replaceFirstFrom(StringLike s,int start) {
-        return replaceFirstRegion(s,start,s.length());
-    }
-    public StringLike replaceFirstRegion(StringLike s,int start,int end) {
-        first = true;
-        return dorep(s,start,end);
-    }
-
-    RegHolder rh = new RegHolder();
-
-    public StringLike replaceAllRegion(String s,Regex r,
-        int start, int end) {
-        return replaceAllRegion(new StringWrap(s),r,start,end);
-    }
-    /** This method replaces all occurences of the Regex in the
-        String starting with postition pos
-        according to the Replacer rule of this object. */
-    public StringLike replaceAllRegion(StringLike s,Regex r,
-        int start,int end) {
-        first = false;
-        // reset
-        rh.me = r;
-        rh.prev = null;
-        return dorep(s,start,end);
-    }
-    public StringLike replaceAll(StringLike s) {
-        return replaceAllRegion(s,0,s.length());
-    }
-    public StringLike replaceAllFrom(StringLike s,int start) {
-        return replaceAllRegion(s,start,s.length());
-    }
-    public StringLike replaceAllRegion(StringLike s,int start,int end) {
-        first = false;
-        return dorep(s,start,end);
-    }
-
-    public String replaceAll(String s) {
-        return replaceAllRegion(new StringWrap(s),0,s.length()).toString();
-    }
-    public String replaceAllFrom(String s,int start) {
-        return replaceAllRegion(new StringWrap(s),start,s.length()).toString();
-    }
-    public String replaceAllRegion(String s,int start,int end) {
-        first = false;
-        return dorep(new StringWrap(s),start,end).toString();
-    }
-
-    final public boolean isSpecial(ReplaceRule x) {
-        while(x != null) {
-            if(x instanceof SpecialRule
-                    || (x instanceof RuleHolder && ((RuleHolder)x).held instanceof SpecialRule))
-                return true;
-            x = x.next;
-        }
-        return false;
-    }
-    final public void apply1(RegRes rr) {
-        rr.charsMatched_++;
-        apply(rr,null);
-        rr.charsMatched_--;
-    }
-
-    final StringLike dorep(StringLike s,int start,int end) {
-        StringLike ret = s;
-        want_more_text = false;
-        lastMatchedTo = 0;
-        if(rh.me == null)
-            throw new NullPointerException("Replacer has null Regex pointer");
-        if(rh.me._search(s,start,end)) {
-            int rmn = rh.me.matchedTo();
-            if(rh.me.charsMatched()==0 && !isSpecial(rh.me.getReplaceRule())) {
-                apply1(rh.me);
-                rmn++;
-            }
-            apply(rh.me);
-            if(!first)
-                for(int i=rmn;
-                        !want_more_text && rh.me._search(s,i,end);i=rmn) {
-                    rmn = rh.me.matchedTo();
-                    if(rh.me.charsMatched()==0) {
-                        if(!isSpecial(rh.me.getReplaceRule()))
-                            apply1(rh.me);
-                        rmn++;
-                    }
-                    apply(rh.me);
-                }
-            ret = finish();
-            ret = ret == null ? s : ret;
-        }
-        return ret;
-    }
-
-    StringBufferLike sb = null;
-    StringLike src = null;
-    int pos = 0;
-    /** This method allows you to apply the results of several
-        matches in a sequence to modify a String of text.  Each
-        call in the sequence must operate on the same piece of
-        text and the matchedFrom() of each RegRes given to this
-        method must be greater in value than the preceeding
-        RegRes's matchedTo() value.
-        */
-    public void apply(RegRes r,ReplaceRule rp) {
-        if(rp==null ||(rp.next == null && rp instanceof AmpersandRule))
-            return;
-        if(r.didMatch()) {
-            if(src == null)
-                src = r.getStringLike();
-	    if(sb == null)
-                sb = new StringBufferLike(src.newStringBufferLike());
-            int rmf = r.matchedFrom();
-            for(int ii=pos;ii<rmf;ii++)
-              sb.append(src.charAt(ii));
-
-            Vector v = new Vector();
-            for(ReplaceRule x=rp;x != null;x=x.next) {
-                x.apply(sb,r);
-                if(x instanceof SpecialRule) {
-                    if(x instanceof WantMoreTextReplaceRule
-                            && want_more_text_enable)
-                        want_more_text = true;
-                    else if(x instanceof PushRule) {
-                        RegHolder rh2 = new RegHolder();
-                        rh2.me = ( (PushRule)x ).NewRule;
-                        rh2.prev = rh;
-                        rh = rh2;
-                    } else if(x instanceof PopRule) {
-                        if(rh.prev != null)
-                            rh = rh.prev;
-                    } else if(x instanceof ChangeRule) {
-                        rh.me = ( (ChangeRule) x).NewRule;
-                    }
-                }
-            }
-            if(!want_more_text)
-                pos = r.matchedTo();
-        }
-    }
-    boolean want_more_text = false, want_more_text_enable = false;
-    public boolean WantMoreText() { return want_more_text; }
-    /** Another form of apply, it is the same as
-        apply(r,r.getReplaceRule()). */
-    public void apply(Regex r) { apply(r,r.getReplaceRule()); }
-
-    /** This finishes the replacement, appending the right() part of
-        the last RegRes given to substitute(RegRes).  After this method
-        is called, the Replace object is reset to perform another
-        substitution. If no RegRes objects with a true didMatch are
-        applied, this returns null. */
-    public StringLike finish() {
-        if(src==null)
-            return null;
-        //sb.append(src.substring(pos,src.length()));
-        int s_end = src.length();
-        for(int ii=pos;ii<s_end;ii++)
-          sb.append(src.charAt(ii));
-        src = null;
-        lastMatchedTo = pos;
-        pos = 0;
-        StringLike retstr = sb.toStringLike();
-        sb = null;
-        return retstr;
-    }
-    int lastMatchedTo = 0;
-    public Object clone() {
-        Replacer r = new Replacer();
-        r.first = first;
-        r.src = src;
-        r.sb = sb;
-        r.pos = pos;
-        r.lastMatchedTo = lastMatchedTo;
-        r.want_more_text = want_more_text;
-        r.want_more_text_enable = want_more_text_enable;
-        r.rh.me = rh.me;
-        r.rh.prev = rh.prev;
-        return r;
-    }
-    public int lastMatchedTo() { return lastMatchedTo; }
-    public Regex getRegex() {
-      return rh.me;
-    }
-    public void setSource(StringLike sl) {
-      src = sl;
-    }
-    public void setBuffer(StringBufferLike sbl) {
-      sb = sbl;
-    }
-    public void setPos(int pos) {
-      this.pos = pos;
-    }
-}
+//
+// This software is now distributed according to
+// the Lesser Gnu Public License.  Please see
+// http://www.gnu.org/copyleft/lesser.txt for
+// the details.
+//    -- Happy Computing!
+//
+package com.stevesoft.pat;
+
+import com.stevesoft.pat.wrap.*;
+
+/** Internally used class. */
+class RegHolder
+{
+  Regex me = null;
+
+  RegHolder prev = null;
+}
+
+/**
+ * Internally used class.
+ * 
+ * @see CodeRule
+ */
+class CodeVal
+{
+  int pos;
+
+  char code;
+
+  CodeVal(int p, char c)
+  {
+    pos = p;
+    code = c;
+  }
+
+  public String toString()
+  {
+    return "(" + pos + "," + code + ")";
+  }
+}
+
+/**
+ * To use this class, first use either the getReplacer() method from Transformer
+ * or Regex. You can then use replaceAll, replaceFirst, etc. methods on the
+ * Replacer in the same way that you can from either of those two classes.
+ * <p>
+ * The only potential difference between using the methods of Replacer to do the
+ * replacing is that Replacer remembers changes to the replacing object between
+ * calls to replaceAll, replaceFirst etc. For details, see the example file <a
+ * href="http://javaregex.com/code/trans3.java.html">trans3.java</a>.
+ * 
+ * @see com.stevesoft.pat.Transformer
+ * @see com.stevesoft.pat.Regex
+ */
+public class Replacer
+{
+  boolean first;
+
+  /** Instantiate a new Replacer. */
+  public Replacer()
+  {
+  }
+
+  public StringLike replaceFirstRegion(String s, Regex r, int start, int end)
+  {
+    return replaceFirstRegion(new StringWrap(s), r, start, end);
+  }
+
+  /**
+   * This method replaces the first occurence of the Regex in the String
+   * starting with position pos according to the Replacer rule of this object.
+   */
+  public StringLike replaceFirstRegion(StringLike s, Regex r, int start,
+          int end)
+  {
+    first = true;
+    rh.me = r;
+    rh.prev = null;
+    return dorep(s, start, end);
+  }
+
+  public StringLike replaceFirst(StringLike s)
+  {
+    return replaceFirstRegion(s, 0, s.length());
+  }
+
+  public StringLike replaceFirstFrom(StringLike s, int start)
+  {
+    return replaceFirstRegion(s, start, s.length());
+  }
+
+  public StringLike replaceFirstRegion(StringLike s, int start, int end)
+  {
+    first = true;
+    return dorep(s, start, end);
+  }
+
+  RegHolder rh = new RegHolder();
+
+  public StringLike replaceAllRegion(String s, Regex r, int start, int end)
+  {
+    return replaceAllRegion(new StringWrap(s), r, start, end);
+  }
+
+  /**
+   * This method replaces all occurences of the Regex in the String starting
+   * with postition pos according to the Replacer rule of this object.
+   */
+  public StringLike replaceAllRegion(StringLike s, Regex r, int start,
+          int end)
+  {
+    first = false;
+    // reset
+    rh.me = r;
+    rh.prev = null;
+    return dorep(s, start, end);
+  }
+
+  public StringLike replaceAll(StringLike s)
+  {
+    return replaceAllRegion(s, 0, s.length());
+  }
+
+  public StringLike replaceAllFrom(StringLike s, int start)
+  {
+    return replaceAllRegion(s, start, s.length());
+  }
+
+  public StringLike replaceAllRegion(StringLike s, int start, int end)
+  {
+    first = false;
+    return dorep(s, start, end);
+  }
+
+  public String replaceAll(String s)
+  {
+    return replaceAllRegion(new StringWrap(s), 0, s.length()).toString();
+  }
+
+  public String replaceAllFrom(String s, int start)
+  {
+    return replaceAllRegion(new StringWrap(s), start, s.length())
+            .toString();
+  }
+
+  public String replaceAllRegion(String s, int start, int end)
+  {
+    first = false;
+    return dorep(new StringWrap(s), start, end).toString();
+  }
+
+  final public boolean isSpecial(ReplaceRule x)
+  {
+    while (x != null)
+    {
+      if (x instanceof SpecialRule
+              || (x instanceof RuleHolder && ((RuleHolder) x).held instanceof SpecialRule))
+      {
+        return true;
+      }
+      x = x.next;
+    }
+    return false;
+  }
+
+  final public void apply1(RegRes rr)
+  {
+    rr.charsMatched_++;
+    apply(rr, null);
+    rr.charsMatched_--;
+  }
+
+  final StringLike dorep(StringLike s, int start, int end)
+  {
+    StringLike ret = s;
+    want_more_text = false;
+    lastMatchedTo = 0;
+    if (rh.me == null)
+    {
+      throw new NullPointerException("Replacer has null Regex pointer");
+    }
+    if (rh.me._search(s, start, end))
+    {
+      int rmn = rh.me.matchedTo();
+      if (rh.me.charsMatched() == 0 && !isSpecial(rh.me.getReplaceRule()))
+      {
+        apply1(rh.me);
+        rmn++;
+      }
+      apply(rh.me);
+      if (!first)
+      {
+        for (int i = rmn; !want_more_text && rh.me._search(s, i, end); i = rmn)
+        {
+          rmn = rh.me.matchedTo();
+          if (rh.me.charsMatched() == 0)
+          {
+            if (!isSpecial(rh.me.getReplaceRule()))
+            {
+              apply1(rh.me);
+            }
+            rmn++;
+          }
+          apply(rh.me);
+        }
+      }
+      ret = finish();
+      ret = ret == null ? s : ret;
+    }
+    return ret;
+  }
+
+  StringBufferLike sb = null;
+
+  StringLike src = null;
+
+  int pos = 0;
+
+  /**
+   * This method allows you to apply the results of several matches in a
+   * sequence to modify a String of text. Each call in the sequence must operate
+   * on the same piece of text and the matchedFrom() of each RegRes given to
+   * this method must be greater in value than the preceeding RegRes's
+   * matchedTo() value.
+   */
+  public void apply(RegRes r, ReplaceRule rp)
+  {
+    if (rp == null || (rp.next == null && rp instanceof AmpersandRule))
+    {
+      return;
+    }
+    if (r.didMatch())
+    {
+      if (src == null)
+      {
+        src = r.getStringLike();
+      }
+      if (sb == null)
+      {
+        sb = new StringBufferLike(src.newStringBufferLike());
+      }
+      int rmf = r.matchedFrom();
+      for (int ii = pos; ii < rmf; ii++)
+      {
+        sb.append(src.charAt(ii));
+      }
+
+      for (ReplaceRule x = rp; x != null; x = x.next)
+      {
+        x.apply(sb, r);
+        if (x instanceof SpecialRule)
+        {
+          if (x instanceof WantMoreTextReplaceRule && want_more_text_enable)
+          {
+            want_more_text = true;
+          }
+          else if (x instanceof PushRule)
+          {
+            RegHolder rh2 = new RegHolder();
+            rh2.me = ((PushRule) x).NewRule;
+            rh2.prev = rh;
+            rh = rh2;
+          }
+          else if (x instanceof PopRule)
+          {
+            if (rh.prev != null)
+            {
+              rh = rh.prev;
+            }
+          }
+          else if (x instanceof ChangeRule)
+          {
+            rh.me = ((ChangeRule) x).NewRule;
+          }
+        }
+      }
+      if (!want_more_text)
+      {
+        pos = r.matchedTo();
+      }
+    }
+  }
+
+  boolean want_more_text = false, want_more_text_enable = false;
+
+  public boolean WantMoreText()
+  {
+    return want_more_text;
+  }
+
+  /**
+   * Another form of apply, it is the same as apply(r,r.getReplaceRule()).
+   */
+  public void apply(Regex r)
+  {
+    apply(r, r.getReplaceRule());
+  }
+
+  /**
+   * This finishes the replacement, appending the right() part of the last
+   * RegRes given to substitute(RegRes). After this method is called, the
+   * Replace object is reset to perform another substitution. If no RegRes
+   * objects with a true didMatch are applied, this returns null.
+   */
+  public StringLike finish()
+  {
+    if (src == null)
+    {
+      return null;
+    }
+    // sb.append(src.substring(pos,src.length()));
+    int s_end = src.length();
+    for (int ii = pos; ii < s_end; ii++)
+    {
+      sb.append(src.charAt(ii));
+    }
+    src = null;
+    lastMatchedTo = pos;
+    pos = 0;
+    StringLike retstr = sb.toStringLike();
+    sb = null;
+    return retstr;
+  }
+
+  int lastMatchedTo = 0;
+
+  public Object clone()
+  {
+    Replacer r = new Replacer();
+    r.first = first;
+    r.src = src;
+    r.sb = sb;
+    r.pos = pos;
+    r.lastMatchedTo = lastMatchedTo;
+    r.want_more_text = want_more_text;
+    r.want_more_text_enable = want_more_text_enable;
+    r.rh.me = rh.me;
+    r.rh.prev = rh.prev;
+    return r;
+  }
+
+  public int lastMatchedTo()
+  {
+    return lastMatchedTo;
+  }
+
+  public Regex getRegex()
+  {
+    return rh.me;
+  }
+
+  public void setSource(StringLike sl)
+  {
+    src = sl;
+  }
+
+  public void setBuffer(StringBufferLike sbl)
+  {
+    sb = sbl;
+  }
+
+  public void setPos(int pos)
+  {
+    this.pos = pos;
+  }
+}