--- /dev/null
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.argeo.jcr.fs;
+
+import java.io.ByteArrayOutputStream;
+import java.io.UnsupportedEncodingException;
+import java.security.MessageDigest;
+import java.security.NoSuchAlgorithmException;
+import java.util.ArrayList;
+import java.util.BitSet;
+import java.util.Properties;
+
+/**
+ * <b>Hacked from org.apache.jackrabbit.util.Text in Jackrabbit JCR Commons</b>
+ * This Class provides some text related utilities
+ */
+class Text {
+
+ /**
+ * Hidden constructor.
+ */
+ private Text() {
+ }
+
+ /**
+ * used for the md5
+ */
+ public static final char[] hexTable = "0123456789abcdef".toCharArray();
+
+ /**
+ * Calculate an MD5 hash of the string given.
+ *
+ * @param data
+ * the data to encode
+ * @param enc
+ * the character encoding to use
+ * @return a hex encoded string of the md5 digested input
+ */
+ public static String md5(String data, String enc) throws UnsupportedEncodingException {
+ try {
+ return digest("MD5", data.getBytes(enc));
+ } catch (NoSuchAlgorithmException e) {
+ throw new InternalError("MD5 digest not available???");
+ }
+ }
+
+ /**
+ * Calculate an MD5 hash of the string given using 'utf-8' encoding.
+ *
+ * @param data
+ * the data to encode
+ * @return a hex encoded string of the md5 digested input
+ */
+ public static String md5(String data) {
+ try {
+ return md5(data, "utf-8");
+ } catch (UnsupportedEncodingException e) {
+ throw new InternalError("UTF8 digest not available???");
+ }
+ }
+
+ /**
+ * Digest the plain string using the given algorithm.
+ *
+ * @param algorithm
+ * The alogrithm for the digest. This algorithm must be supported
+ * by the MessageDigest class.
+ * @param data
+ * The plain text String to be digested.
+ * @param enc
+ * The character encoding to use
+ * @return The digested plain text String represented as Hex digits.
+ * @throws java.security.NoSuchAlgorithmException
+ * if the desired algorithm is not supported by the
+ * MessageDigest class.
+ * @throws java.io.UnsupportedEncodingException
+ * if the encoding is not supported
+ */
+ public static String digest(String algorithm, String data, String enc)
+ throws NoSuchAlgorithmException, UnsupportedEncodingException {
+
+ return digest(algorithm, data.getBytes(enc));
+ }
+
+ /**
+ * Digest the plain string using the given algorithm.
+ *
+ * @param algorithm
+ * The algorithm for the digest. This algorithm must be supported
+ * by the MessageDigest class.
+ * @param data
+ * the data to digest with the given algorithm
+ * @return The digested plain text String represented as Hex digits.
+ * @throws java.security.NoSuchAlgorithmException
+ * if the desired algorithm is not supported by the
+ * MessageDigest class.
+ */
+ public static String digest(String algorithm, byte[] data) throws NoSuchAlgorithmException {
+
+ MessageDigest md = MessageDigest.getInstance(algorithm);
+ byte[] digest = md.digest(data);
+ StringBuilder res = new StringBuilder(digest.length * 2);
+ for (byte b : digest) {
+ res.append(hexTable[(b >> 4) & 15]);
+ res.append(hexTable[b & 15]);
+ }
+ return res.toString();
+ }
+
+ /**
+ * returns an array of strings decomposed of the original string, split at
+ * every occurrence of 'ch'. if 2 'ch' follow each other with no
+ * intermediate characters, empty "" entries are avoided.
+ *
+ * @param str
+ * the string to decompose
+ * @param ch
+ * the character to use a split pattern
+ * @return an array of strings
+ */
+ public static String[] explode(String str, int ch) {
+ return explode(str, ch, false);
+ }
+
+ /**
+ * returns an array of strings decomposed of the original string, split at
+ * every occurrence of 'ch'.
+ *
+ * @param str
+ * the string to decompose
+ * @param ch
+ * the character to use a split pattern
+ * @param respectEmpty
+ * if <code>true</code>, empty elements are generated
+ * @return an array of strings
+ */
+ public static String[] explode(String str, int ch, boolean respectEmpty) {
+ if (str == null || str.length() == 0) {
+ return new String[0];
+ }
+
+ ArrayList<String> strings = new ArrayList<String>();
+ int pos;
+ int lastpos = 0;
+
+ // add snipples
+ while ((pos = str.indexOf(ch, lastpos)) >= 0) {
+ if (pos - lastpos > 0 || respectEmpty) {
+ strings.add(str.substring(lastpos, pos));
+ }
+ lastpos = pos + 1;
+ }
+ // add rest
+ if (lastpos < str.length()) {
+ strings.add(str.substring(lastpos));
+ } else if (respectEmpty && lastpos == str.length()) {
+ strings.add("");
+ }
+
+ // return string array
+ return strings.toArray(new String[strings.size()]);
+ }
+
+ /**
+ * Concatenates all strings in the string array using the specified
+ * delimiter.
+ *
+ * @param arr
+ * @param delim
+ * @return the concatenated string
+ */
+ public static String implode(String[] arr, String delim) {
+ StringBuilder buf = new StringBuilder();
+ for (int i = 0; i < arr.length; i++) {
+ if (i > 0) {
+ buf.append(delim);
+ }
+ buf.append(arr[i]);
+ }
+ return buf.toString();
+ }
+
+ /**
+ * Replaces all occurrences of <code>oldString</code> in <code>text</code>
+ * with <code>newString</code>.
+ *
+ * @param text
+ * @param oldString
+ * old substring to be replaced with <code>newString</code>
+ * @param newString
+ * new substring to replace occurrences of <code>oldString</code>
+ * @return a string
+ */
+ public static String replace(String text, String oldString, String newString) {
+ if (text == null || oldString == null || newString == null) {
+ throw new IllegalArgumentException("null argument");
+ }
+ int pos = text.indexOf(oldString);
+ if (pos == -1) {
+ return text;
+ }
+ int lastPos = 0;
+ StringBuilder sb = new StringBuilder(text.length());
+ while (pos != -1) {
+ sb.append(text.substring(lastPos, pos));
+ sb.append(newString);
+ lastPos = pos + oldString.length();
+ pos = text.indexOf(oldString, lastPos);
+ }
+ if (lastPos < text.length()) {
+ sb.append(text.substring(lastPos));
+ }
+ return sb.toString();
+ }
+
+ /**
+ * Replaces XML characters in the given string that might need escaping as
+ * XML text or attribute
+ *
+ * @param text
+ * text to be escaped
+ * @return a string
+ */
+ public static String encodeIllegalXMLCharacters(String text) {
+ return encodeMarkupCharacters(text, false);
+ }
+
+ /**
+ * Replaces HTML characters in the given string that might need escaping as
+ * HTML text or attribute
+ *
+ * @param text
+ * text to be escaped
+ * @return a string
+ */
+ public static String encodeIllegalHTMLCharacters(String text) {
+ return encodeMarkupCharacters(text, true);
+ }
+
+ private static String encodeMarkupCharacters(String text, boolean isHtml) {
+ if (text == null) {
+ throw new IllegalArgumentException("null argument");
+ }
+ StringBuilder buf = null;
+ int length = text.length();
+ int pos = 0;
+ for (int i = 0; i < length; i++) {
+ int ch = text.charAt(i);
+ switch (ch) {
+ case '<':
+ case '>':
+ case '&':
+ case '"':
+ case '\'':
+ if (buf == null) {
+ buf = new StringBuilder();
+ }
+ if (i > 0) {
+ buf.append(text.substring(pos, i));
+ }
+ pos = i + 1;
+ break;
+ default:
+ continue;
+ }
+ if (ch == '<') {
+ buf.append("<");
+ } else if (ch == '>') {
+ buf.append(">");
+ } else if (ch == '&') {
+ buf.append("&");
+ } else if (ch == '"') {
+ buf.append(""");
+ } else if (ch == '\'') {
+ buf.append(isHtml ? "'" : "'");
+ }
+ }
+ if (buf == null) {
+ return text;
+ } else {
+ if (pos < length) {
+ buf.append(text.substring(pos));
+ }
+ return buf.toString();
+ }
+ }
+
+ /**
+ * The list of characters that are not encoded by the <code>escape()</code>
+ * and <code>unescape()</code> METHODS. They contains the characters as
+ * defined 'unreserved' in section 2.3 of the RFC 2396 'URI generic syntax':
+ * <p>
+ *
+ * <pre>
+ * unreserved = alphanum | mark
+ * mark = "-" | "_" | "." | "!" | "~" | "*" | "'" | "(" | ")"
+ * </pre>
+ */
+ public static BitSet URISave;
+
+ /**
+ * Same as {@link #URISave} but also contains the '/'
+ */
+ public static BitSet URISaveEx;
+
+ static {
+ URISave = new BitSet(256);
+ int i;
+ for (i = 'a'; i <= 'z'; i++) {
+ URISave.set(i);
+ }
+ for (i = 'A'; i <= 'Z'; i++) {
+ URISave.set(i);
+ }
+ for (i = '0'; i <= '9'; i++) {
+ URISave.set(i);
+ }
+ URISave.set('-');
+ URISave.set('_');
+ URISave.set('.');
+ URISave.set('!');
+ URISave.set('~');
+ URISave.set('*');
+ URISave.set('\'');
+ URISave.set('(');
+ URISave.set(')');
+
+ URISaveEx = (BitSet) URISave.clone();
+ URISaveEx.set('/');
+ }
+
+ /**
+ * Does an URL encoding of the <code>string</code> using the
+ * <code>escape</code> character. The characters that don't need encoding
+ * are those defined 'unreserved' in section 2.3 of the 'URI generic syntax'
+ * RFC 2396, but without the escape character.
+ *
+ * @param string
+ * the string to encode.
+ * @param escape
+ * the escape character.
+ * @return the escaped string
+ * @throws NullPointerException
+ * if <code>string</code> is <code>null</code>.
+ */
+ public static String escape(String string, char escape) {
+ return escape(string, escape, false);
+ }
+
+ /**
+ * Does an URL encoding of the <code>string</code> using the
+ * <code>escape</code> character. The characters that don't need encoding
+ * are those defined 'unreserved' in section 2.3 of the 'URI generic syntax'
+ * RFC 2396, but without the escape character. If <code>isPath</code> is
+ * <code>true</code>, additionally the slash '/' is ignored, too.
+ *
+ * @param string
+ * the string to encode.
+ * @param escape
+ * the escape character.
+ * @param isPath
+ * if <code>true</code>, the string is treated as path
+ * @return the escaped string
+ * @throws NullPointerException
+ * if <code>string</code> is <code>null</code>.
+ */
+ public static String escape(String string, char escape, boolean isPath) {
+ try {
+ BitSet validChars = isPath ? URISaveEx : URISave;
+ byte[] bytes = string.getBytes("utf-8");
+ StringBuilder out = new StringBuilder(bytes.length);
+ for (byte aByte : bytes) {
+ int c = aByte & 0xff;
+ if (validChars.get(c) && c != escape) {
+ out.append((char) c);
+ } else {
+ out.append(escape);
+ out.append(hexTable[(c >> 4) & 0x0f]);
+ out.append(hexTable[(c) & 0x0f]);
+ }
+ }
+ return out.toString();
+ } catch (UnsupportedEncodingException e) {
+ throw new InternalError(e.toString());
+ }
+ }
+
+ /**
+ * Does a URL encoding of the <code>string</code>. The characters that don't
+ * need encoding are those defined 'unreserved' in section 2.3 of the 'URI
+ * generic syntax' RFC 2396.
+ *
+ * @param string
+ * the string to encode
+ * @return the escaped string
+ * @throws NullPointerException
+ * if <code>string</code> is <code>null</code>.
+ */
+ public static String escape(String string) {
+ return escape(string, '%');
+ }
+
+ /**
+ * Does a URL encoding of the <code>path</code>. The characters that don't
+ * need encoding are those defined 'unreserved' in section 2.3 of the 'URI
+ * generic syntax' RFC 2396. In contrast to the {@link #escape(String)}
+ * method, not the entire path string is escaped, but every individual part
+ * (i.e. the slashes are not escaped).
+ *
+ * @param path
+ * the path to encode
+ * @return the escaped path
+ * @throws NullPointerException
+ * if <code>path</code> is <code>null</code>.
+ */
+ public static String escapePath(String path) {
+ return escape(path, '%', true);
+ }
+
+ /**
+ * Does a URL decoding of the <code>string</code> using the
+ * <code>escape</code> character. Please note that in opposite to the
+ * {@link java.net.URLDecoder} it does not transform the + into spaces.
+ *
+ * @param string
+ * the string to decode
+ * @param escape
+ * the escape character
+ * @return the decoded string
+ * @throws NullPointerException
+ * if <code>string</code> is <code>null</code>.
+ * @throws IllegalArgumentException
+ * if the 2 characters following the escape character do not
+ * represent a hex-number or if not enough characters follow an
+ * escape character
+ */
+ public static String unescape(String string, char escape) {
+ try {
+ byte[] utf8 = string.getBytes("utf-8");
+
+ // Check whether escape occurs at invalid position
+ if ((utf8.length >= 1 && utf8[utf8.length - 1] == escape)
+ || (utf8.length >= 2 && utf8[utf8.length - 2] == escape)) {
+ throw new IllegalArgumentException("Premature end of escape sequence at end of input");
+ }
+
+ ByteArrayOutputStream out = new ByteArrayOutputStream(utf8.length);
+ for (int k = 0; k < utf8.length; k++) {
+ byte b = utf8[k];
+ if (b == escape) {
+ out.write((decodeDigit(utf8[++k]) << 4) + decodeDigit(utf8[++k]));
+ } else {
+ out.write(b);
+ }
+ }
+
+ return new String(out.toByteArray(), "utf-8");
+ } catch (UnsupportedEncodingException e) {
+ throw new InternalError(e.toString());
+ }
+ }
+
+ /**
+ * Does a URL decoding of the <code>string</code>. Please note that in
+ * opposite to the {@link java.net.URLDecoder} it does not transform the +
+ * into spaces.
+ *
+ * @param string
+ * the string to decode
+ * @return the decoded string
+ * @throws NullPointerException
+ * if <code>string</code> is <code>null</code>.
+ * @throws ArrayIndexOutOfBoundsException
+ * if not enough character follow an escape character
+ * @throws IllegalArgumentException
+ * if the 2 characters following the escape character do not
+ * represent a hex-number.
+ */
+ public static String unescape(String string) {
+ return unescape(string, '%');
+ }
+
+ /**
+ * Escapes all illegal JCR name characters of a string. The encoding is
+ * loosely modeled after URI encoding, but only encodes the characters it
+ * absolutely needs to in order to make the resulting string a valid JCR
+ * name. Use {@link #unescapeIllegalJcrChars(String)} for decoding.
+ * <p>
+ * QName EBNF:<br>
+ * <xmp> simplename ::= onecharsimplename | twocharsimplename |
+ * threeormorecharname onecharsimplename ::= (* Any Unicode character
+ * except: '.', '/', ':', '[', ']', '*', '|' or any whitespace character *)
+ * twocharsimplename ::= '.' onecharsimplename | onecharsimplename '.' |
+ * onecharsimplename onecharsimplename threeormorecharname ::= nonspace
+ * string nonspace string ::= char | string char char ::= nonspace | ' '
+ * nonspace ::= (* Any Unicode character except: '/', ':', '[', ']', '*',
+ * '|' or any whitespace character *) </xmp>
+ *
+ * @param name
+ * the name to escape
+ * @return the escaped name
+ */
+ public static String escapeIllegalJcrChars(String name) {
+ return escapeIllegalChars(name, "%/:[]*|\t\r\n");
+ }
+
+ /**
+ * Escapes all illegal JCR 1.0 name characters of a string. Use
+ * {@link #unescapeIllegalJcrChars(String)} for decoding.
+ * <p>
+ * QName EBNF:<br>
+ * <xmp> simplename ::= onecharsimplename | twocharsimplename |
+ * threeormorecharname onecharsimplename ::= (* Any Unicode character
+ * except: '.', '/', ':', '[', ']', '*', ''', '"', '|' or any whitespace
+ * character *) twocharsimplename ::= '.' onecharsimplename |
+ * onecharsimplename '.' | onecharsimplename onecharsimplename
+ * threeormorecharname ::= nonspace string nonspace string ::= char | string
+ * char char ::= nonspace | ' ' nonspace ::= (* Any Unicode character
+ * except: '/', ':', '[', ']', '*', ''', '"', '|' or any whitespace
+ * character *) </xmp>
+ *
+ * @since Apache Jackrabbit 2.3.2 and 2.2.10
+ * @see <a href=
+ * "https://issues.apache.org/jira/browse/JCR-3128">JCR-3128</a>
+ * @param name
+ * the name to escape
+ * @return the escaped name
+ */
+ public static String escapeIllegalJcr10Chars(String name) {
+ return escapeIllegalChars(name, "%/:[]*'\"|\t\r\n");
+ }
+
+ private static String escapeIllegalChars(String name, String illegal) {
+ StringBuilder buffer = new StringBuilder(name.length() * 2);
+ for (int i = 0; i < name.length(); i++) {
+ char ch = name.charAt(i);
+ if (illegal.indexOf(ch) != -1 || (ch == '.' && name.length() < 3)
+ || (ch == ' ' && (i == 0 || i == name.length() - 1))) {
+ buffer.append('%');
+ buffer.append(Character.toUpperCase(Character.forDigit(ch / 16, 16)));
+ buffer.append(Character.toUpperCase(Character.forDigit(ch % 16, 16)));
+ } else {
+ buffer.append(ch);
+ }
+ }
+ return buffer.toString();
+ }
+
+ /**
+ * Escapes illegal XPath search characters at the end of a string.
+ * <p>
+ * Example:<br>
+ * A search string like 'test?' will run into a ParseException documented in
+ * http://issues.apache.org/jira/browse/JCR-1248
+ *
+ * @param s
+ * the string to encode
+ * @return the escaped string
+ */
+ public static String escapeIllegalXpathSearchChars(String s) {
+ StringBuilder sb = new StringBuilder();
+ sb.append(s.substring(0, (s.length() - 1)));
+ char c = s.charAt(s.length() - 1);
+ // NOTE: keep this in sync with _ESCAPED_CHAR below!
+ if (c == '!' || c == '(' || c == ':' || c == '^' || c == '[' || c == ']' || c == '{' || c == '}' || c == '?') {
+ sb.append('\\');
+ }
+ sb.append(c);
+ return sb.toString();
+ }
+
+ /**
+ * Unescapes previously escaped jcr chars.
+ * <p>
+ * Please note, that this does not exactly the same as the url related
+ * {@link #unescape(String)}, since it handles the byte-encoding
+ * differently.
+ *
+ * @param name
+ * the name to unescape
+ * @return the unescaped name
+ */
+ public static String unescapeIllegalJcrChars(String name) {
+ StringBuilder buffer = new StringBuilder(name.length());
+ int i = name.indexOf('%');
+ while (i > -1 && i + 2 < name.length()) {
+ buffer.append(name.toCharArray(), 0, i);
+ int a = Character.digit(name.charAt(i + 1), 16);
+ int b = Character.digit(name.charAt(i + 2), 16);
+ if (a > -1 && b > -1) {
+ buffer.append((char) (a * 16 + b));
+ name = name.substring(i + 3);
+ } else {
+ buffer.append('%');
+ name = name.substring(i + 1);
+ }
+ i = name.indexOf('%');
+ }
+ buffer.append(name);
+ return buffer.toString();
+ }
+
+ /**
+ * Returns the name part of the path. If the given path is already a name
+ * (i.e. contains no slashes) it is returned.
+ *
+ * @param path
+ * the path
+ * @return the name part or <code>null</code> if <code>path</code> is
+ * <code>null</code>.
+ */
+ public static String getName(String path) {
+ return getName(path, '/');
+ }
+
+ /**
+ * Returns the name part of the path, delimited by the given
+ * <code>delim</code>. If the given path is already a name (i.e. contains no
+ * <code>delim</code> characters) it is returned.
+ *
+ * @param path
+ * the path
+ * @param delim
+ * the delimiter
+ * @return the name part or <code>null</code> if <code>path</code> is
+ * <code>null</code>.
+ */
+ public static String getName(String path, char delim) {
+ return path == null ? null : path.substring(path.lastIndexOf(delim) + 1);
+ }
+
+ /**
+ * Same as {@link #getName(String)} but adding the possibility to pass paths
+ * that end with a trailing '/'
+ *
+ * @see #getName(String)
+ */
+ public static String getName(String path, boolean ignoreTrailingSlash) {
+ if (ignoreTrailingSlash && path != null && path.endsWith("/") && path.length() > 1) {
+ path = path.substring(0, path.length() - 1);
+ }
+ return getName(path);
+ }
+
+ /**
+ * Returns the namespace prefix of the given <code>qname</code>. If the
+ * prefix is missing, an empty string is returned. Please note, that this
+ * method does not validate the name or prefix.
+ * </p>
+ * the qname has the format: qname := [prefix ':'] local;
+ *
+ * @param qname
+ * a qualified name
+ * @return the prefix of the name or "".
+ *
+ * @see #getLocalName(String)
+ *
+ * @throws NullPointerException
+ * if <code>qname</code> is <code>null</code>
+ */
+ public static String getNamespacePrefix(String qname) {
+ int pos = qname.indexOf(':');
+ return pos >= 0 ? qname.substring(0, pos) : "";
+ }
+
+ /**
+ * Returns the local name of the given <code>qname</code>. Please note, that
+ * this method does not validate the name.
+ * </p>
+ * the qname has the format: qname := [prefix ':'] local;
+ *
+ * @param qname
+ * a qualified name
+ * @return the localname
+ *
+ * @see #getNamespacePrefix(String)
+ *
+ * @throws NullPointerException
+ * if <code>qname</code> is <code>null</code>
+ */
+ public static String getLocalName(String qname) {
+ int pos = qname.indexOf(':');
+ return pos >= 0 ? qname.substring(pos + 1) : qname;
+ }
+
+ /**
+ * Determines, if two paths denote hierarchical siblins.
+ *
+ * @param p1
+ * first path
+ * @param p2
+ * second path
+ * @return true if on same level, false otherwise
+ */
+ public static boolean isSibling(String p1, String p2) {
+ int pos1 = p1.lastIndexOf('/');
+ int pos2 = p2.lastIndexOf('/');
+ return (pos1 == pos2 && pos1 >= 0 && p1.regionMatches(0, p2, 0, pos1));
+ }
+
+ /**
+ * Determines if the <code>descendant</code> path is hierarchical a
+ * descendant of <code>path</code>.
+ *
+ * @param path
+ * the current path
+ * @param descendant
+ * the potential descendant
+ * @return <code>true</code> if the <code>descendant</code> is a descendant;
+ * <code>false</code> otherwise.
+ */
+ public static boolean isDescendant(String path, String descendant) {
+ String pattern = path.endsWith("/") ? path : path + "/";
+ return !pattern.equals(descendant) && descendant.startsWith(pattern);
+ }
+
+ /**
+ * Determines if the <code>descendant</code> path is hierarchical a
+ * descendant of <code>path</code> or equal to it.
+ *
+ * @param path
+ * the path to check
+ * @param descendant
+ * the potential descendant
+ * @return <code>true</code> if the <code>descendant</code> is a descendant
+ * or equal; <code>false</code> otherwise.
+ */
+ public static boolean isDescendantOrEqual(String path, String descendant) {
+ if (path.equals(descendant)) {
+ return true;
+ } else {
+ String pattern = path.endsWith("/") ? path : path + "/";
+ return descendant.startsWith(pattern);
+ }
+ }
+
+ /**
+ * Returns the n<sup>th</sup> relative parent of the path, where n=level.
+ * <p>
+ * Example:<br>
+ * <code>
+ * Text.getRelativeParent("/foo/bar/test", 1) == "/foo/bar"
+ * </code>
+ *
+ * @param path
+ * the path of the page
+ * @param level
+ * the level of the parent
+ */
+ public static String getRelativeParent(String path, int level) {
+ int idx = path.length();
+ while (level > 0) {
+ idx = path.lastIndexOf('/', idx - 1);
+ if (idx < 0) {
+ return "";
+ }
+ level--;
+ }
+ return (idx == 0) ? "/" : path.substring(0, idx);
+ }
+
+ /**
+ * Same as {@link #getRelativeParent(String, int)} but adding the
+ * possibility to pass paths that end with a trailing '/'
+ *
+ * @see #getRelativeParent(String, int)
+ */
+ public static String getRelativeParent(String path, int level, boolean ignoreTrailingSlash) {
+ if (ignoreTrailingSlash && path.endsWith("/") && path.length() > 1) {
+ path = path.substring(0, path.length() - 1);
+ }
+ return getRelativeParent(path, level);
+ }
+
+ /**
+ * Returns the n<sup>th</sup> absolute parent of the path, where n=level.
+ * <p>
+ * Example:<br>
+ * <code>
+ * Text.getAbsoluteParent("/foo/bar/test", 1) == "/foo/bar"
+ * </code>
+ *
+ * @param path
+ * the path of the page
+ * @param level
+ * the level of the parent
+ */
+ public static String getAbsoluteParent(String path, int level) {
+ int idx = 0;
+ int len = path.length();
+ while (level >= 0 && idx < len) {
+ idx = path.indexOf('/', idx + 1);
+ if (idx < 0) {
+ idx = len;
+ }
+ level--;
+ }
+ return level >= 0 ? "" : path.substring(0, idx);
+ }
+
+ /**
+ * Performs variable replacement on the given string value. Each
+ * <code>${...}</code> sequence within the given value is replaced with the
+ * value of the named parser variable. If a variable is not found in the
+ * properties an IllegalArgumentException is thrown unless
+ * <code>ignoreMissing</code> is <code>true</code>. In the later case, the
+ * missing variable is replaced by the empty string.
+ *
+ * @param value
+ * the original value
+ * @param ignoreMissing
+ * if <code>true</code>, missing variables are replaced by the
+ * empty string.
+ * @return value after variable replacements
+ * @throws IllegalArgumentException
+ * if the replacement of a referenced variable is not found
+ */
+ public static String replaceVariables(Properties variables, String value, boolean ignoreMissing)
+ throws IllegalArgumentException {
+ StringBuilder result = new StringBuilder();
+
+ // Value:
+ // +--+-+--------+-+-----------------+
+ // | |p|--> |q|--> |
+ // +--+-+--------+-+-----------------+
+ int p = 0, q = value.indexOf("${"); // Find first ${
+ while (q != -1) {
+ result.append(value.substring(p, q)); // Text before ${
+ p = q;
+ q = value.indexOf("}", q + 2); // Find }
+ if (q != -1) {
+ String variable = value.substring(p + 2, q);
+ String replacement = variables.getProperty(variable);
+ if (replacement == null) {
+ if (ignoreMissing) {
+ replacement = "";
+ } else {
+ throw new IllegalArgumentException("Replacement not found for ${" + variable + "}.");
+ }
+ }
+ result.append(replacement);
+ p = q + 1;
+ q = value.indexOf("${", p); // Find next ${
+ }
+ }
+ result.append(value.substring(p, value.length())); // Trailing text
+
+ return result.toString();
+ }
+
+ private static byte decodeDigit(byte b) {
+ if (b >= 0x30 && b <= 0x39) {
+ return (byte) (b - 0x30);
+ } else if (b >= 0x41 && b <= 0x46) {
+ return (byte) (b - 0x37);
+ } else if (b >= 0x61 && b <= 0x66) {
+ return (byte) (b - 0x57);
+ } else {
+ throw new IllegalArgumentException("Escape sequence is not hexadecimal: " + (char) b);
+ }
+ }
+
+}
projects / lgpl / argeo-commons.git / commitdiff