From fa67a247cf66ea86f6fcc773c27cfd4698d2405a Mon Sep 17 00:00:00 2001
From: Marc G. Fournier
Date: Sat, 20 Sep 1997 02:21:25 +0000
Subject: Bring in Peter's changes...finally :(

---
 src/interfaces/jdbc/postgresql/PGtokenizer.java | 100 ++++++++++++++++++++++++
 1 file changed, 100 insertions(+)
 create mode 100644 src/interfaces/jdbc/postgresql/PGtokenizer.java

(limited to 'src/interfaces/jdbc/postgresql/PGtokenizer.java')

diff --git a/src/interfaces/jdbc/postgresql/PGtokenizer.java b/src/interfaces/jdbc/postgresql/PGtokenizer.java
new file mode 100644
index 00000000000..d41bfef5a0c
--- /dev/null
+++ b/src/interfaces/jdbc/postgresql/PGtokenizer.java
@@ -0,0 +1,100 @@
+/**
+ *
+ * This class is used to tokenize the text output of postgres.
+ *
+ */
+
+package postgresql;
+
+import java.sql.*;
+import java.util.*;
+
+public class PGtokenizer
+{
+  protected Vector	tokens;
+  
+  public PGtokenizer(String string,char delim)
+  {
+    tokenize(string,delim);
+  }
+  
+  /**
+   * Tokenizes a new string
+   */
+  public int tokenize(String string,char delim)
+  {
+    tokens = new Vector();
+    
+    int nest=0,p,s;
+    for(p=0,s=0;p<string.length();p++) {
+      char c = string.charAt(p);
+      
+      // increase nesting if an open character is found
+      if(c == '(' || c == '[')
+	nest++;
+      
+      // decrease nesting if a close character is found
+      if(c == ')' || c == ']')
+	nest--;
+      
+      if(nest==0 && c==delim) {
+	tokens.addElement(string.substring(s,p));
+	s=p+1; // +1 to skip the delimiter
+      }
+      
+    }
+    
+    // Don't forget the last token ;-)
+    if(s<string.length())
+      tokens.addElement(string.substring(s));
+    
+    return tokens.size();
+  }
+  
+  public int getSize()
+  {
+    return tokens.size();
+  }
+  
+  public String getToken(int n)
+  {
+    return (String)tokens.elementAt(n);
+  }
+  
+  /**
+   * This returns a new tokenizer based on one of our tokens
+   */
+  public PGtokenizer tokenizeToken(int n,char delim)
+  {
+    return new PGtokenizer(getToken(n),delim);
+  }
+  
+  /**
+   * This removes the lead/trailing strings from a string
+   */
+  public static String remove(String s,String l,String t)
+  {
+    if(s.startsWith(l))	s = s.substring(l.length());
+    if(s.endsWith(t))	s = s.substring(0,s.length()-t.length());
+    return s;
+  }
+  
+  /**
+   * This removes the lead/trailing strings from all tokens
+   */
+  public void remove(String l,String t)
+  {
+    for(int i=0;i<tokens.size();i++) {
+      tokens.setElementAt(remove((String)tokens.elementAt(i),l,t),i);
+    }
+  }
+  
+  public static String removePara(String s)	{return remove(s,"(",")");}
+  public void removePara()			{remove("(",")");}
+  
+  public static String removeBox(String s)	{return remove(s,"[","]");}
+  public void removeBox()			{remove("[","]");}
+  
+  public static String removeAngle(String s)	{return remove(s,"<",">");}
+  public void removeAngle()			{remove("<",">");}
+}
-- 
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