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| -rw-r--r-- | common/src/at/gv/egovernment/moa/util/StringUtils.java | 148 |
1 files changed, 148 insertions, 0 deletions
diff --git a/common/src/at/gv/egovernment/moa/util/StringUtils.java b/common/src/at/gv/egovernment/moa/util/StringUtils.java new file mode 100644 index 000000000..0ad5c515c --- /dev/null +++ b/common/src/at/gv/egovernment/moa/util/StringUtils.java @@ -0,0 +1,148 @@ +// Copyright (C) 2002 IAIK +// email: jce-info@iaik.tu-graz.ac.at +// +// All rights reserved. +// +// This source is provided for inspection purposes and recompilation only, +// unless specified differently in a contract with IAIK. This source has to +// be kept in strict confidence and must not be disclosed to any third party +// under any circumstances. Redistribution in source and binary forms, with +// or without modification, are <not> permitted in any case! +// +// THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND +// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +// ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE +// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +// OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +// HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +// OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +// SUCH DAMAGE. +// + +package at.gv.egovernment.moa.util; + +import java.util.StringTokenizer; + +/** + * Utitility functions for string manipulations. + * + * @author Harald Bratko + */ +public class StringUtils { + + /** + * Removes all blanks and tabs from the given string. + * + * @param s The string to remove all blanks and tabs from. + * @return The input string with all blanks and tabs removed from. + */ + public static String removeBlanks(String s) { + StringTokenizer st = new StringTokenizer(s); + StringBuffer sb = new StringBuffer(s.length()); + while (st.hasMoreTokens()) { + sb.append(st.nextToken()); + } + return sb.toString(); + } + + /** + * Removes all occurences of the specified token from the the given string. + * + * @param s The string to remove all occurences of the specified token from. + * @return The input string with all occurences of the specified token removed from. + */ + public static String removeToken(String s, String token) { + StringTokenizer st = new StringTokenizer(s, token); + StringBuffer sb = new StringBuffer(s.length()); + while (st.hasMoreTokens()) { + sb.append(st.nextToken()); + } + return sb.toString(); + } + + /** + * Removes all leading zeros from the input string. + * + * @param s The string remove the leading zeros from. + * @return The input string with the leading zeros removed from. + */ + public static String deleteLeadingZeros(String s) { + StringBuffer sb = new StringBuffer(s); + int l = sb.length(); + int j = 0; + for (int i=0; i<l; i++) { + if (sb.charAt(i) == '0') { + j++; + } else { + break; + } + } + return sb.substring(j, l); + } + + /** + * Replaces each substring of string <code>s</code> that matches the given + * <code>search</code> string by the given <code>replace</code> string. + * + * @param s The string where the replacment should take place. + * @param search The pattern that should be replaced. + * @param replace The string that should replace all each <code>search</code> + * string within <code>s</code>. + * @return A string whrer all occurrence of <code>search</code> are + * replaced with <code>replace</code>. + */ + public static String replaceAll (String s, String search, String replace) + { + StringBuffer sb = new StringBuffer(); + int i = 0, j = 0; + int len = search.length(); + while (j > -1) + { + j = s.indexOf(search, i); + + if (j > -1) + { + sb.append(s.substring(i,j)); + sb.append(replace); + i = j + len; + } + } + + sb.append(s.substring(i, s.length())); + + return sb.toString(); + } + + /** + * Changes the SecurityLayer version in the given string. + * This method usually takes as input an XML structure represented in a string + * format and changes the SecurityLayer namespaces prefixes and URIs from + * one SecurityLayer version to another. + * e.g.: code>sl10</code> to <code>sl</code> and + * <code>http://www.buergerkarte.at/namespaces/securitylayer/20020225#</code> + * to + * <code>http://www.buergerkarte.at/namespaces/securitylayer/1.2#</code> + * + * @param s The string (usally an XML structure) where the + * SecurityLayer version should be changed. + * @param slPrefixOld The SecurityLayer namespace prefix that should be + * replaced by the new one. + * @param slPrefixNew The new SecurityLayer namespace prefix that should + * replace the old one. + * @param slNSUriOld The SecurityLayer namespace URI that should be + * replaced by the new one. + * @param slNSUriNew The new SecurityLayer namespace URI that should + * replace the old one. + * @return A string where the SecurityLayer namespace prefixes + * and URIs are replaced by new ones. + */ + public static String changeSLVersion(String s, String slPrefixOld, String slPrefixNew, String slNSUriOld, String slNSUriNew) { + String retString = replaceAll(s, slPrefixOld, slPrefixNew); + retString = replaceAll(retString, slNSUriOld, slNSUriNew); + return retString ; + } + +} |