+++ /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 / blobdiff