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Diffstat (limited to 'src/interfaces/jdbc/org/postgresql/util/PGtokenizer.java')
| -rw-r--r-- | src/interfaces/jdbc/org/postgresql/util/PGtokenizer.java | 214 |
1 files changed, 0 insertions, 214 deletions
diff --git a/src/interfaces/jdbc/org/postgresql/util/PGtokenizer.java b/src/interfaces/jdbc/org/postgresql/util/PGtokenizer.java deleted file mode 100644 index cf33d3d205..0000000000 --- a/src/interfaces/jdbc/org/postgresql/util/PGtokenizer.java +++ /dev/null @@ -1,214 +0,0 @@ -/*------------------------------------------------------------------------- - * - * PGtokenizer.java - * This class is used to tokenize the text output of org.postgres. - * - * Copyright (c) 2003, PostgreSQL Global Development Group - * - * IDENTIFICATION - * $PostgreSQL: pgsql/src/interfaces/jdbc/org/postgresql/util/PGtokenizer.java,v 1.8 2003/11/29 19:52:11 pgsql Exp $ - * - *------------------------------------------------------------------------- - */ -package org.postgresql.util; - -import java.util.Vector; - -/* - * It's mainly used by the geometric classes, but is useful in parsing any - * output from custom data types output from org.postgresql. - * - * @see org.postgresql.geometric.PGbox - * @see org.postgresql.geometric.PGcircle - * @see org.postgresql.geometric.PGlseg - * @see org.postgresql.geometric.PGpath - * @see org.postgresql.geometric.PGpoint - * @see org.postgresql.geometric.PGpolygon - */ -public class PGtokenizer -{ - // Our tokens - protected Vector tokens; - - /* - * Create a tokeniser. - * - * <p>We could have used StringTokenizer to do this, however, we needed to - * handle nesting of '(' ')' '[' ']' '<' and '>' as these are used - * by the geometric data types. - * - * @param string containing tokens - * @param delim single character to split the tokens - */ - public PGtokenizer(String string, char delim) - { - tokenize(string, delim); - } - - /* - * This resets this tokenizer with a new string and/or delimiter. - * - * @param string containing tokens - * @param delim single character to split the tokens - */ - public int tokenize(String string, char delim) - { - tokens = new Vector(); - - // nest holds how many levels we are in the current token. - // if this is > 0 then we don't split a token when delim is matched. - // - // The Geometric datatypes use this, because often a type may have others - // (usualls PGpoint) imbedded within a token. - // - // Peter 1998 Jan 6 - Added < and > to the nesting rules - 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 == '[' || c == '<') - nest++; - - // decrease nesting if a close character is found - if (c == ')' || 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(); - } - - /* - * @return the number of tokens available - */ - public int getSize() - { - return tokens.size(); - } - - /* - * @param n Token number ( 0 ... getSize()-1 ) - * @return The token value - */ - public String getToken(int n) - { - return (String)tokens.elementAt(n); - } - - /* - * This returns a new tokenizer based on one of our tokens. - * - * The geometric datatypes use this to process nested tokens (usually - * PGpoint). - * - * @param n Token number ( 0 ... getSize()-1 ) - * @param delim The delimiter to use - * @return A new instance of PGtokenizer based on the token - */ - public PGtokenizer tokenizeToken(int n, char delim) - { - return new PGtokenizer(getToken(n), delim); - } - - /* - * This removes the lead/trailing strings from a string - * @param s Source string - * @param l Leading string to remove - * @param t Trailing string to remove - * @return String without the lead/trailing strings - */ - 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 - * @param l Leading string to remove - * @param t Trailing string to remove - */ - 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); - } - } - - /* - * Removes ( and ) from the beginning and end of a string - * @param s String to remove from - * @return String without the ( or ) - */ - public static String removePara(String s) - { - return remove(s, "(", ")"); - } - - /* - * Removes ( and ) from the beginning and end of all tokens - * @return String without the ( or ) - */ - public void removePara() - { - remove("(", ")"); - } - - /* - * Removes [ and ] from the beginning and end of a string - * @param s String to remove from - * @return String without the [ or ] - */ - public static String removeBox(String s) - { - return remove(s, "[", "]"); - } - - /* - * Removes [ and ] from the beginning and end of all tokens - * @return String without the [ or ] - */ - public void removeBox() - { - remove("[", "]"); - } - - /* - * Removes < and > from the beginning and end of a string - * @param s String to remove from - * @return String without the < or > - */ - public static String removeAngle(String s) - { - return remove(s, "<", ">"); - } - - /* - * Removes < and > from the beginning and end of all tokens - * @return String without the < or > - */ - public void removeAngle() - { - remove("<", ">"); - } -} |